Introduce VersionVector #1047
Introduce VersionVector #1047
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Co-authored-by: Youngteac Hong <[email protected]>
Unify VersionVectors in ChangePack across three scenarios: 1. Pushing pack to server: represents document's current version vector 2. Pulling pack: represents minSyncedVersionVector for GC 3. Pulling pack(snapshot): represents snapshot's version vector at creation This commit simplifies the codebase and ensures consistent version vector handling throughout the document synchronization process.
* Update garbage collection design document * Fix typo * Update version vector design document * Add contents to garbage collection design document * Updated explanation based on review feedback * Updated explanation based on review feedback
This commit establishes a framework for handling database migrations between
versions, with a specific implementation for version vector updates. The
migration process follows these steps:
1. Creates version-specific directories in migrations/
2. Implements migration script files for data transformation
3. Updates migrationMap in /cmd/migration.go to register new versions
Migration can be executed using the CLI command:
$ yorkie migration --from v0.5.1 --to v0.6.0 \
--mongo-connection-uri mongodb://localhost:27017 \
--batch-size 10000 \
--database-name yorkie-meta
---------
Co-authored-by: Youngteac Hong <[email protected]>
WalkthroughThe pull request introduces significant changes to the Yorkie codebase, primarily focused on integrating version vectors into various components. Key modifications include updates to the handling of change IDs, document snapshots, and garbage collection processes, shifting from a Lamport clock-based system to a version vector-based approach. New methods and fields related to version vectors are added across multiple files, enhancing the ability to track changes and manage document states in a distributed environment. This refactoring aims to improve the accuracy of garbage collection and document synchronization. Changes
Assessment against linked issues
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Actionable comments posted: 44
🧹 Outside diff range and nitpick comments (62)
server/backend/database/version_vector.go (1)
24-31: LGTM:VersionVectorInfostruct is well-defined.The
VersionVectorInfostruct is correctly implemented with appropriate fields and BSON tags. It aligns well with the PR objectives of introducing version vector support.Consider enhancing the struct comment to provide more context:
// VersionVectorInfo represents the version vector information for a specific document and client // within a project. It is used to track the state of changes across distributed systems.migrations/v0.5.3/main.go (1)
27-40: LGTM: Well-structured migration function with appropriate error handling.The
RunMigrationfunction is well-implemented, with proper error handling and a clear structure. It correctly orchestrates the two migration steps and provides feedback on completion.Consider adding more detailed error logging before returning errors. This could help with debugging in case of migration failures. For example:
if err := AddVersionVector(ctx, db, databaseName, batchSize); err != nil { + fmt.Printf("Error in AddVersionVector: %v\n", err) return err } if err := DropSnapshots(ctx, db, databaseName); err != nil { + fmt.Printf("Error in DropSnapshots: %v\n", err) return err }server/backend/database/snapshot_info.go (2)
20-23: LGTM! Consider adding a comment for clarity.The addition of the
gotimealias and the import of the custom time package are appropriate for introducing the VersionVector.Consider adding a brief comment explaining the reason for using two time packages:
// Standard time package gotime "time" // Custom time package for Yorkie-specific time operations "github.com/yorkie-team/yorkie/pkg/document/time"
43-45: LGTM! Consider adding a comment for the VersionVector field.The addition of the VersionVector field aligns with the PR objectives and improves the snapshot tracking capabilities.
Consider adding a brief comment explaining the purpose of the VersionVector field:
// VersionVector represents the version state of the snapshot across all clients. VersionVector time.VersionVector `bson:"version_vector"`pkg/document/change/change.go (1)
116-119: LGTM with minor suggestions.The
AfterOrEqualmethod is well-implemented and aligns with the PR objectives by supporting the new versioning system. It correctly delegates the comparison to theIDtype'sAfterOrEqualmethod, maintaining consistency in the ordering logic.Consider the following minor improvements:
- Add a brief comment explaining the method's purpose and any potential edge cases.
- Consider adding error handling for a nil
otherparameter, if not already handled at a higher level.Here's a suggested implementation with comments:
// AfterOrEqual returns whether this change is after or equal to the given change. // It compares the changes based on their IDs, which incorporate version vectors. func (c *Change) AfterOrEqual(other *Change) bool { if other == nil { return true // or handle this case as appropriate for your use case } return c.id.AfterOrEqual(other.id) }server/backend/database/change_info.go (1)
97-97: LGTM: Incorporation of VersionVector in change ID generationThe update to the
change.NewIDcall to includei.VersionVectoris a crucial change that integrates the new versioning system into the change ID generation process. This modification aligns well with the PR objective of adopting vector clocks for improved concurrency management.For improved code clarity, consider adding a brief comment explaining the significance of including the
VersionVectorin the change ID generation:// Generate a new change ID incorporating the VersionVector for improved concurrency tracking changeID := change.NewID(i.ClientSeq, i.ServerSeq, i.Lamport, actorID, i.VersionVector)This comment would help future developers understand the importance of this change in the context of the new versioning system.
pkg/document/time/actor_id.go (1)
67-67: LGTM! Consistent use of the new actorID type.The change to use the new
actorIDtype for thebytesfield in theActorIDstruct is consistent and improves type safety. This modification supports the PR objectives by refining the ActorID representation, which is crucial for the version vector implementation.Consider updating the struct documentation to reflect the use of the new
actorIDtype:// ActorID represents the unique ID of the client. It is composed of 12 bytes. // It caches the string representation of ActorID to reduce the number of calls // to hex.EncodeToString. This causes a multi-routine problem, so it is // recommended to use it in a single routine or to use it after locking. type ActorID struct { - bytes [actorIDSize]byte + bytes actorID cachedString string }api/yorkie/v1/admin.proto (1)
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1-190: Summary: VersionVector successfully integrated into AdminService APIThe addition of the VersionVector field to the GetSnapshotMetaResponse message is the only change in this file, and it successfully introduces the concept of vector clocks to the Yorkie admin API. This change aligns well with the PR objectives and maintains backward compatibility.
Next steps to consider:
- Ensure that all client code and internal services are updated to handle the new VersionVector field.
- Update documentation to reflect the new field and its purpose in the API.
- Consider adding tests that specifically verify the correct handling and transmission of VersionVector data.
- Plan for a potential future removal of the Lamport clock field once the transition to vector clocks is complete.
server/backend/database/mongo/indexes.go (1)
165-175: LGTM: New entry for ColVersionVectors. Consider adding a comment.The addition of the
ColVersionVectorsentry with a unique index onproject_id,doc_id, andclient_idis well-structured and aligns with the VersionVector feature implementation.Consider adding a brief comment above the index definition to explain its purpose, similar to other entries in this file. For example:
// Ensure unique version vectors per project, document, and clientpkg/document/gc_test.go (3)
134-134: LGTM: Updated garbage collection call to use MaxVersionVector.This change aligns with the PR objectives of replacing Lamport clocks with vector clocks for garbage collection. It should improve accuracy in concurrent scenarios by considering the maximum version across all actors.
Consider renaming
docto a more descriptive name liketestDocto improve readability in test cases.
209-209: LGTM: Updated garbage collection calls in TestTextGC to use MaxVersionVector.These changes consistently apply the new vector clock approach to garbage collection in text-based operations, aligning with the PR objectives and the changes made in TestTreeGC.
For consistency, consider extracting
helper.MaxVersionVector(doc.ActorID())into a helper function within the test file, as it's used multiple times. This would improve maintainability and reduce duplication.Also applies to: 218-218
Incomplete Removal of
time.MaxTicketin Test FilesThe verification revealed that some test files still use
time.MaxTicket, indicating that not all relevant tests have been updated to usehelper.MaxVersionVector. Please update the following files to replacetime.MaxTicketwithhelper.MaxVersionVector:
pkg/document/crdt/tree_test.goapi/converter/converter_test.go🔗 Analysis chain
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1-221: Summary: Successful update of garbage collection tests to use version vectors.The changes in this file consistently update the garbage collection mechanism in tests to use version vectors instead of Lamport clocks. This aligns well with the PR objectives and should help validate the correctness of the new implementation. The tests now cover both tree and text operations, ensuring comprehensive coverage of the new garbage collection logic.
To ensure that all relevant test files have been updated, please run the following script:
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Verify that all test files related to garbage collection have been updated to use MaxVersionVector. # Test: Search for any remaining instances of time.MaxTicket in test files # Expect: No results, indicating all relevant files have been updated rg -g '*_test.go' 'time\.MaxTicket' # Test: Confirm that helper.MaxVersionVector is now used in relevant test files # Expect: Results showing the usage of MaxVersionVector in garbage collection tests rg -g '*_test.go' 'helper\.MaxVersionVector'Length of output: 3450
design/version-vector.md (5)
1-20: LGTM! Consider adding a comma for clarity.The metadata and introduction provide a clear context for the document, effectively explaining the importance of logical clocks in CRDT systems. The goals and non-goals are well-defined, setting the scope appropriately.
Consider adding a comma after "Version Vector" in line 11 for improved readability:
-Yorkie provides a special type of Version Vector called Lamport Synced Version Vector which consists of Lamport and version vector. +Yorkie provides a special type of Version Vector called Lamport Synced Version Vector, which consists of Lamport and version vector.🧰 Tools
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[uncategorized] ~11-~11: Possible missing comma found.
Context: ...on Vector called Lamport Synced Version Vector which consists of Lamport and version v...(AI_HYDRA_LEO_MISSING_COMMA)
23-36: LGTM! Consider minor improvements for clarity and formatting.The explanation of Lamport Timestamps is clear, accurate, and well-illustrated with an example.
- Consider adding a colon after "Lamport Timestamp" in the heading for consistency:
-### What is Lamport Timestamp +### What is Lamport Timestamp:
- Specify a language for the code block to enable syntax highlighting:
-``` +```text Here's a simplified example of Lamport Timestamps in a distributed system with three processes (P1, P2, P3): 1. P1 performs an event: P1's clock becomes 1. ...🧰 Tools
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[uncategorized] ~23-~23: Possible missing comma found.
Context: ...ructure. ## Proposal Details ### What is Lamport TimestampLamport Timestamps...(AI_HYDRA_LEO_MISSING_COMMA)
[uncategorized] ~24-~24: The verb “are” doesn’t seem to fit in this context, “is” is probably more formally correct.
Context: ... Lamport TimestampLamport Timestampsare a logical clock mechanism used in distr...(AI_HYDRA_LEO_CPT_ARE_IS)
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41-43: LGTM! Consider adding a brief explanation of the causality issue.This section effectively introduces the motivation for using Version Vectors and provides a helpful reference to the garbage collection design document.
Consider adding a brief explanation of the causality issue mentioned in line 42. This would provide readers with a clearer understanding of the problem without necessarily having to refer to the garbage collection document immediately.
51-57: LGTM! Consider clarifying the transition to the hybrid approach.This section effectively explains the inconsistencies between Lamport Timestamps and Version Vectors, and the challenges of applying pure Version Vectors in Yorkie's context. The introduction of the hybrid approach (Lamport Synced Version Vector) is a good solution to the outlined problems.
Consider adding a brief sentence at the end of this section to explicitly state that the Lamport Synced Version Vector will be explained in detail in the next section. This would improve the flow of the document and set clear expectations for the reader.
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Context: ...ements received, without creating a new max by adding to the maximum found during t...(AI_HYDRA_LEO_MISSING_COMMA)
59-66: LGTM! Consider adding a conclusion or summary.This section provides a clear and comprehensive explanation of the Lamport Synced Version Vector, effectively illustrating its differences from traditional Version Vectors. The diagram (lamport-synced-version-vector-and-version-vector.jpg) is particularly helpful in visualizing the concept. The explanation of the merge process clearly demonstrates how causality is maintained while using the existing TimeTicket system.
Consider adding a brief conclusion or summary at the end of the document. This could recap the key points, emphasize the benefits of the Lamport Synced Version Vector approach, and possibly mention any next steps or implications for Yorkie's implementation.
design/garbage-collection.md (6)
3-11: Approved: Version update and new prerequisite section.The target version update and the new "Before watch this document" section are valuable additions. They provide context and set expectations for readers.
Consider changing "Before watch this document" to "Before reading this document" for better grammatical accuracy.
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Context: ....3 --- # Garbage Collection ## Before watch this document In this document, the te...(AI_EN_LECTOR_REPLACEMENT_VERB_FORM)
30-35: Approved: Clear explanation of the transition to version vectors.The new subsection effectively explains the limitations of Lamport timestamps and the need for version vectors. The included image helps visualize the issue, addressing the objectives outlined in issue #723.
Consider rephrasing the sentence on line 31 for clarity:
"Previously, we used Lamport timestamps (min_synced_seq) to handle Garbage Collection. While simple and lightweight to use, this approach has a crucial weakness: Lamport timestamps don't guarantee causality."🧰 Tools
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Context: ...mple and lightweight to use, but it has crucial weakness that Lamport doesn't guarantee...(AI_HYDRA_LEO_MISSING_THE)
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Context: ... lightweight to use, but it has crucial weakness that Lamport doesn't guarantee causalit...(AI_HYDRA_LEO_MISSING_COMMA)
[style] ~34-~34: This phrasing can be wordy, so consider using a more descriptive and concise alternative.
Context: ...-gc-issue](media/prev-gc-issue.jpg) As you can see from the image above,min_synced_seqdoesn...(AS_YOU_CAN_SEE)
37-67: Approved: Clear explanation of version vector usage andminVersionVector.The updated "How It Works" section and the new "What is
minVersionVector" subsection provide a comprehensive explanation of the new garbage collection approach using version vectors. This aligns well with the PR objectives.Consider adding a brief explanation of what "actor" represents in the GC algorithm on line 51. This would help readers unfamiliar with the term in this context.
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[uncategorized] ~39-~39: Possible missing article found.
Context: ...d remotely and purges them completely. Server records the version vector of the last ...(AI_HYDRA_LEO_MISSING_THE)
[uncategorized] ~40-~40: You might be missing the article “the” here.
Context: ...never the client requests PushPull. And Server returns the min version vector, `minVer...(AI_EN_LECTOR_MISSING_DETERMINER_THE)
[uncategorized] ~40-~40: Possible missing preposition found.
Context: ...rsionVectorof all clients in response PushPull to the client.minVersionVector` is us...(AI_EN_LECTOR_MISSING_PREPOSITION)
[uncategorized] ~43-~43: You might be missing the article “the” here.
Context: ... vector is the vector which consists of minimum value of every version vector stored in...(AI_EN_LECTOR_MISSING_DETERMINER_THE)
[uncategorized] ~43-~43: You might be missing the article “a” here.
Context: ...ector stored in version vector table in database. Conceptually, min version vector is v...(AI_EN_LECTOR_MISSING_DETERMINER_A)
[uncategorized] ~45-~45: You might be missing the article “a” here.
Context: ...e. Conceptually, min version vector is version vector that is uniformly applied to all...(AI_EN_LECTOR_MISSING_DETERMINER_A)
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69-107: Approved: Comprehensive example of garbage collection process.The expanded example with 6 states provides an excellent, detailed illustration of the garbage collection process using version vectors. This step-by-step explanation greatly enhances understanding of the new approach.
For consistency, consider adding a brief explanation for State 6, similar to the explanations provided for the other states.
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[uncategorized] ~80-~80: You might be missing the article “the” here.
Context: ...And theClient asends change3ato server through PushPull API and receives as a ...(AI_EN_LECTOR_MISSING_DETERMINER_THE)
[uncategorized] ~82-~82: You might be missing the article “the” here.
Context: ... and it has not been sent (pushpull) to server yet. #### State 3 ![garbage-collectio...(AI_EN_LECTOR_MISSING_DETERMINER_THE)
[uncategorized] ~88-~88: You might be missing the article “the” here.
Context: ....png)Client bpushes change3bto server and receives as a response that `minVer...(AI_EN_LECTOR_MISSING_DETERMINER_THE)
[uncategorized] ~88-~88: You might be missing the article “the” here.
Context: ...ent applies change4, the contents of document are changed toac. This time, all cli...(AI_EN_LECTOR_MISSING_DETERMINER_THE)
[grammar] ~88-~88: The noun should probably be in the singular form.
Context: ...t's still marked as tombstone for every clients, becauseminVersionVector[a] = 1 < 3...(EVERY_EACH_SINGULAR)
[formatting] ~88-~88: If the ‘because’ clause is essential to the meaning, do not use a comma before the clause.
Context: ...ll marked as tombstone for every clients, becauseminVersionVector[a] = 1 < 3#### St...(COMMA_BEFORE_BECAUSE)
[uncategorized] ~100-~100: Possible missing comma found.
Context: ...e-collection-5.png)Client bpushpull but nothing to push or pull. `minVersionVec...(AI_HYDRA_LEO_MISSING_COMMA)
[uncategorized] ~106-~106: Possible missing comma found.
Context: ...e-collection-6.png)Client apushpull but nothing to push or pull. `minVersionVec...(AI_HYDRA_LEO_MISSING_COMMA)
[uncategorized] ~143-~143: Possible missing preposition found.
Context: ...ort from db.versionVector. So we choose remove only client's version vector from table...(AI_HYDRA_LEO_MISSING_TO)
[uncategorized] ~143-~143: You might be missing the article “the” here.
Context: ...emove only client's version vector from table, and filter minVersionVector by active ...(AI_EN_LECTOR_MISSING_DETERMINER_THE)
[uncategorized] ~158-~158: You might be missing the article “the” here.
Context: ....Filter([c3]) = {c1:3, c2:3} ``` After client receive this minVersionVector, it will ...(AI_EN_LECTOR_MISSING_DETERMINER_THE)
[uncategorized] ~158-~158: This verb does not appear to agree with the subject. Consider using a different form.
Context: ...([c3]) = {c1:3, c2:3} ``` After client receive this minVersionVector, it will filter i...(AI_EN_LECTOR_REPLACEMENT_VERB_AGREEMENT)
[uncategorized] ~159-~159: This verb does not appear to agree with the subject. Consider using a different form.
Context: ...lamport. The next pushpull request will contains filtered version vector so that eventua...(AI_EN_LECTOR_REPLACEMENT_VERB_AGREEMENT)
[uncategorized] ~159-~159: You might be missing the article “a” here.
Context: ...The next pushpull request will contains filtered version vector so that eventually db.ve...(AI_EN_LECTOR_MISSING_DETERMINER_A)
[uncategorized] ~159-~159: You might be missing the article “the” here.
Context: ...eventually db.version vector will store attached client's version vector only. ![filter-...(AI_EN_LECTOR_MISSING_DETERMINER_THE)
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108-161: Approved: Comprehensive explanation of handling detached clients.The new section on handling detached clients is a valuable addition. It addresses an important edge case in the garbage collection process and provides clear examples of how to maintain consistency when clients detach.
Consider adding a brief explanation of what "detached client" means in this context, perhaps at the beginning of this section. This would help readers who might be unfamiliar with the term.
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[uncategorized] ~143-~143: Possible missing preposition found.
Context: ...ort from db.versionVector. So we choose remove only client's version vector from table...(AI_HYDRA_LEO_MISSING_TO)
[uncategorized] ~143-~143: You might be missing the article “the” here.
Context: ...emove only client's version vector from table, and filter minVersionVector by active ...(AI_EN_LECTOR_MISSING_DETERMINER_THE)
[uncategorized] ~158-~158: You might be missing the article “the” here.
Context: ....Filter([c3]) = {c1:3, c2:3} ``` After client receive this minVersionVector, it will ...(AI_EN_LECTOR_MISSING_DETERMINER_THE)
[uncategorized] ~158-~158: This verb does not appear to agree with the subject. Consider using a different form.
Context: ...([c3]) = {c1:3, c2:3} ``` After client receive this minVersionVector, it will filter i...(AI_EN_LECTOR_REPLACEMENT_VERB_AGREEMENT)
[uncategorized] ~159-~159: This verb does not appear to agree with the subject. Consider using a different form.
Context: ...lamport. The next pushpull request will contains filtered version vector so that eventua...(AI_EN_LECTOR_REPLACEMENT_VERB_AGREEMENT)
[uncategorized] ~159-~159: You might be missing the article “a” here.
Context: ...The next pushpull request will contains filtered version vector so that eventually db.ve...(AI_EN_LECTOR_MISSING_DETERMINER_A)
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Context: ...eventually db.version vector will store attached client's version vector only. ![filter-...(AI_EN_LECTOR_MISSING_DETERMINER_THE)
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1-161: Approved: Comprehensive update of garbage collection design document.This document has been significantly improved to explain the new version vector-based garbage collection approach. The changes effectively address the objectives outlined in the PR and the issues raised in #723. Key improvements include:
- Clear explanation of the transition from Lamport timestamps to version vectors.
- Detailed description of the
minVersionVectorconcept and its role in garbage collection.- Expanded step-by-step example illustrating the garbage collection process.
- New section on handling detached clients, addressing an important edge case.
These updates provide a thorough and clear explanation of the new garbage collection mechanism, which should significantly improve the accuracy of garbage collection in concurrent scenarios.
Consider adding a brief section on the performance implications of this new approach, particularly in large-scale distributed systems. This could help readers understand any trade-offs involved in adopting this new mechanism.
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[uncategorized] ~80-~80: You might be missing the article “the” here.
Context: ...And theClient asends change3ato server through PushPull API and receives as a ...(AI_EN_LECTOR_MISSING_DETERMINER_THE)
[uncategorized] ~82-~82: You might be missing the article “the” here.
Context: ... and it has not been sent (pushpull) to server yet. #### State 3 ![garbage-collectio...(AI_EN_LECTOR_MISSING_DETERMINER_THE)
[uncategorized] ~88-~88: You might be missing the article “the” here.
Context: ....png)Client bpushes change3bto server and receives as a response that `minVer...(AI_EN_LECTOR_MISSING_DETERMINER_THE)
[uncategorized] ~88-~88: You might be missing the article “the” here.
Context: ...ent applies change4, the contents of document are changed toac. This time, all cli...(AI_EN_LECTOR_MISSING_DETERMINER_THE)
[grammar] ~88-~88: The noun should probably be in the singular form.
Context: ...t's still marked as tombstone for every clients, becauseminVersionVector[a] = 1 < 3...(EVERY_EACH_SINGULAR)
[formatting] ~88-~88: If the ‘because’ clause is essential to the meaning, do not use a comma before the clause.
Context: ...ll marked as tombstone for every clients, becauseminVersionVector[a] = 1 < 3#### St...(COMMA_BEFORE_BECAUSE)
[uncategorized] ~100-~100: Possible missing comma found.
Context: ...e-collection-5.png)Client bpushpull but nothing to push or pull. `minVersionVec...(AI_HYDRA_LEO_MISSING_COMMA)
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Context: ...e-collection-6.png)Client apushpull but nothing to push or pull. `minVersionVec...(AI_HYDRA_LEO_MISSING_COMMA)
[uncategorized] ~143-~143: Possible missing preposition found.
Context: ...ort from db.versionVector. So we choose remove only client's version vector from table...(AI_HYDRA_LEO_MISSING_TO)
[uncategorized] ~143-~143: You might be missing the article “the” here.
Context: ...emove only client's version vector from table, and filter minVersionVector by active ...(AI_EN_LECTOR_MISSING_DETERMINER_THE)
[uncategorized] ~158-~158: You might be missing the article “the” here.
Context: ....Filter([c3]) = {c1:3, c2:3} ``` After client receive this minVersionVector, it will ...(AI_EN_LECTOR_MISSING_DETERMINER_THE)
[uncategorized] ~158-~158: This verb does not appear to agree with the subject. Consider using a different form.
Context: ...([c3]) = {c1:3, c2:3} ``` After client receive this minVersionVector, it will filter i...(AI_EN_LECTOR_REPLACEMENT_VERB_AGREEMENT)
[uncategorized] ~159-~159: This verb does not appear to agree with the subject. Consider using a different form.
Context: ...lamport. The next pushpull request will contains filtered version vector so that eventua...(AI_EN_LECTOR_REPLACEMENT_VERB_AGREEMENT)
[uncategorized] ~159-~159: You might be missing the article “a” here.
Context: ...The next pushpull request will contains filtered version vector so that eventually db.ve...(AI_EN_LECTOR_MISSING_DETERMINER_A)
[uncategorized] ~159-~159: You might be missing the article “the” here.
Context: ...eventually db.version vector will store attached client's version vector only. ![filter-...(AI_EN_LECTOR_MISSING_DETERMINER_THE)
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server/backend/database/memory/indexes.go (2)
232-260: LGTM: New tblVersionVectors table schema added.The new table schema for
tblVersionVectorsis well-structured and aligns with the PR objectives. The indexes are appropriately defined to support efficient querying and data integrity.Consider optimizing the "doc_id" index:
"doc_id": { Name: "doc_id", Unique: false, - Indexer: &memdb.CompoundIndex{ - Indexes: []memdb.Indexer{ - &memdb.StringFieldIndex{Field: "DocID"}, - }, - }, + Indexer: &memdb.StringFieldIndex{Field: "DocID"}, },This simplification maintains the same functionality while reducing unnecessary complexity.
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1-260: Overall assessment: Solid improvements to the database schema.The changes in this file effectively introduce the necessary structures for managing version vectors. The new
tblVersionVectorstable and the additional index intblSyncedSeqsalign well with the PR objectives of improving synchronization and garbage collection processes.These modifications should enhance the system's ability to track changes across distributed environments more accurately, addressing the issues outlined in the linked problem (#723) regarding incorrect garbage collection due to Lamport clock limitations.
As the system evolves with these new structures:
- Monitor query performance, especially for operations involving
tblVersionVectorsandtblSyncedSeqs, to ensure optimal indexing.- Consider implementing a migration plan for existing data to populate the new
tblVersionVectorstable if necessary.- Update relevant documentation to reflect these schema changes and their impact on data management processes.
pkg/document/crdt/root_test.go (4)
63-106: LGTM: Comprehensive text editing and garbage collection testThe expanded test case provides excellent coverage of various text editing scenarios and garbage collection. The use of
helper.MaxVersionVector()is consistent with the PR objectives.Consider adding a brief comment before each edit operation to explain the purpose of that specific edit. This would enhance the readability and maintainability of the test case. For example:
// Delete "World" and insert "Yorkie" fromPos, toPos, _ = text.CreateRange(5, 10) _, _, pairs, err = text.Edit(fromPos, toPos, nil, "Yorkie", nil, ctx.IssueTimeTicket())
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108-171: LGTM: Well-structured table-driven test for text fragment garbage collectionThe refactoring to a table-driven test approach significantly improves the readability and maintainability of this test case. The use of
helper.MaxVersionVector()is consistent with the PR objectives.For consistency with Go's naming conventions, consider renaming the
tcvariable tott(for "test table") ortest. This is a common convention in Go table-driven tests. For example:for _, tt := range steps { fromPos, toPos, _ := text.CreateRange(tt.from, tt.to) // ... rest of the loop body }
242-245: LGTM: Consistent use of MaxVersionVector in container garbage collection testThe changes from
time.MaxTickettohelper.MaxVersionVector()are consistent with the previous modifications and align with the PR objectives.For consistency, consider using the same variable name for the garbage collection result in both calls. Currently, you use
nin the first call andgarbageLenin the second. Choosing one name (preferablynfor brevity) would improve consistency:n, err := root.GarbageCollect(helper.MaxVersionVector()) assert.NoError(t, err) assert.Equal(t, 4, n) // ... later in the test n, err = root.GarbageCollect(helper.MaxVersionVector()) assert.NoError(t, err) assert.Equal(t, 1, n)Also applies to: 252-255
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1-257: Overall assessment: Excellent improvements to garbage collection testsThe changes in this file consistently replace
time.MaxTicketwithhelper.MaxVersionVector(), aligning well with the PR objectives of adopting vector clocks for improved garbage collection accuracy. The modifications maintain consistency across all test cases, and the expanded test cases provide more comprehensive coverage of various scenarios.These changes significantly enhance the testing of the garbage collection functionality, particularly in complex scenarios involving concurrent edits, which directly addresses the issues outlined in the linked issue #723.
As the project moves forward with this vector clock implementation, consider the following:
- Ensure that the
MaxVersionVector()helper function is well-documented, explaining its purpose and how it differs from the previousMaxTicketapproach.- Update any relevant documentation or comments in the main codebase to reflect this change in garbage collection logic.
- Consider adding more edge case tests that specifically target scenarios where Lamport clocks were insufficient, to validate the improvements brought by vector clocks.
server/backend/database/database.go (1)
274-281: LGTM: New method for updating and finding min synced version vector.The addition of
UpdateAndFindMinSyncedVersionVectorAfterPushPullis well-aligned with the PR objectives of introducing VersionVector to address garbage collection issues. The method signature is consistent with other interface methods.Consider adding a brief comment explaining the purpose of the
versionVectorparameter and how it differs from the returnedVersionVector.server/rpc/admin_server.go (1)
319-327: LGTM! Consider enhancing error handling.The addition of the
VersionVectorto the response aligns well with the PR objectives to improve concurrency management. The error handling for the conversion is a good practice.Consider wrapping the error returned from
converter.ToVersionVectorwith additional context:pbVersionVector, err := converter.ToVersionVector(doc.VersionVector()) if err != nil { - return nil, err + return nil, fmt.Errorf("failed to convert version vector: %w", err) }This will provide more context if an error occurs during the conversion process.
test/helper/helper.go (1)
144-156: LGTM! Consider adding a brief comment explaining the function's purpose.The
MaxVersionVectorfunction is well-implemented and aligns with the PR objectives of introducing version vector functionality. It correctly handles edge cases and efficiently sets the maximum Lamport timestamp for each actor.Consider adding a brief comment above the function to explain its purpose and usage in the context of testing. This would enhance the code's readability and maintainability.
+// MaxVersionVector creates a version vector with maximum Lamport timestamps for the given actors. +// If no actors are provided, it uses the initial actor ID. This function is useful for testing +// scenarios that require a fully updated version vector. func MaxVersionVector(actors ...*time.ActorID) time.VersionVector { // ... (existing implementation) }api/docs/yorkie/v1/yorkie.openapi.yaml (4)
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470-484: LGTM: VersionVector added and minSyncedTicket deprecated.The changes to the
ChangePackschema are appropriate:
- The addition of the
versionVectorfield aligns with the PR objectives.- The deprecation of
minSyncedTicketcorrectly indicates the shift to the new vector clock system.Consider updating the documentation to:
- Explain the transition from
minSyncedTickettoversionVector.- Guide developers on how to update their code to use the new
versionVectorfield.
1563-1573: LGTM: VersionVector schema introduced.The new
VersionVectorschema is well-structured and aligns with the PR objectives. The use of an object type for thevectorproperty allows for flexible representation of version vectors.Consider adding a brief description to the
VersionVectorschema to explain its purpose and structure. For example:description: "Represents a version vector for tracking the state of distributed replicas."
1574-1591: LGTM: VersionVector.VectorEntry schema is well-defined.The
VersionVector.VectorEntryschema is correctly structured to represent key-value pairs in the version vector. The use ofoneOffor thevalueproperty provides appropriate flexibility.Consider adding a brief description to the
VersionVector.VectorEntryschema to clarify its role. For example:description: "Represents a single entry in the version vector, mapping a replica identifier to its logical clock value."
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1-1591: Summary: VersionVector successfully integrated into the API specification.The changes in this file successfully introduce the VersionVector concept into the Yorkie API specification. Key points:
- VersionVector has been added to critical schemas like ChangeID and ChangePack.
- The minSyncedTicket field has been deprecated in favor of VersionVector.
- New schemas for VersionVector and VersionVector.VectorEntry have been properly defined.
These changes align well with the PR objectives of adopting vector clocks for better concurrency management. However, it's important to note that this represents a significant change in the API.
Consider the following to ensure a smooth transition:
- Update client libraries to handle both the new VersionVector and the deprecated minSyncedTicket for backward compatibility.
- Provide migration guides for users to update their implementations to use VersionVector.
- Plan for a deprecation timeline for the minSyncedTicket field.
api/docs/yorkie/v1/resources.openapi.yaml (4)
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262-276: LGTM: ChangePack schema updated to use VersionVectorThe changes to the
yorkie.v1.ChangePackschema, including the deprecation ofminSyncedTicketand the addition ofversionVector, align perfectly with the PR objectives. This shift from Lamport clocks to vector clocks addresses the issues mentioned in the linked issue #723.Consider expanding the deprecation comment for
minSyncedTicketto provide more context. For example:minSyncedTicket: $ref: '#/components/schemas/yorkie.v1.TimeTicket' additionalProperties: false description: "Deprecated: This field is being replaced by versionVector for improved accuracy in distributed environments." title: min_synced_ticket type: object
1766-1776: LGTM: New VersionVector schema addedThe addition of the
yorkie.v1.VersionVectorschema is a crucial component for implementing vector clocks, which aligns with the PR objectives.Consider adding descriptive comments to improve the schema's clarity:
yorkie.v1.VersionVector: additionalProperties: false description: "Represents a version vector for tracking changes in a distributed environment." properties: vector: additionalProperties: false description: "A map of actor IDs to their corresponding logical clocks." title: vector type: object title: VersionVector type: object
1777-1794: LGTM: VectorEntry schema added for VersionVectorThe addition of the
yorkie.v1.VersionVector.VectorEntryschema provides a flexible structure for representing entries in the version vector, which is essential for the vector clock implementation.Consider adding descriptive comments to improve the schema's clarity:
yorkie.v1.VersionVector.VectorEntry: additionalProperties: false description: "Represents an entry in the version vector, mapping an actor to its logical clock." properties: key: additionalProperties: false description: "The identifier of the actor (e.g., client ID or node ID)." title: key type: string value: additionalProperties: false description: "The logical clock value for the actor, which can be represented as either a string or a number." oneOf: - type: string - type: number title: value title: VectorEntry type: object
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221-1794: Summary: Successful introduction of VersionVector to the API specificationThe changes made to this OpenAPI specification file successfully introduce the necessary structures for implementing vector clocks in the Yorkie API. These modifications, including the addition of
VersionVectorandVectorEntryschemas, and updates toChangeIDandChangePackschemas, directly address the objectives outlined in the PR and the linked issue #723.These changes will significantly improve the system's ability to manage concurrency and track changes accurately in a distributed environment, resolving the issues related to garbage collection that were present with the previous Lamport clock implementation.
As you proceed with implementing these changes in the codebase, ensure that:
- All references to the deprecated
minSyncedTicketare updated to use the newversionVector.- The garbage collection logic is revised to utilize the
VersionVectorfor determining when all peers have acknowledged a deletion operation.- Comprehensive tests are added to validate the correct functioning of the new vector clock implementation, especially in scenarios involving concurrent edits and deletions.
server/backend/database/testcases/testcases.go (1)
552-552: LGTM! Consider minor refactoring for consistency.The addition of
doc.VersionVector()to thechange.NewPackcalls is a good implementation of the version vector concept, aligning well with the PR objectives for improved concurrency management.For consistency and to reduce code duplication, consider extracting the common
change.NewPackcall into a helper function. This could look like:func createChangePack(doc *document.Document, serverSeq int64) *change.Pack { return change.NewPack(doc.Key(), doc.Checkpoint().NextServerSeq(serverSeq), nil, doc.VersionVector(), nil) }Then use it in the test:
pack := createChangePack(doc, 1) // ... and later ... pack = createChangePack(doc, 2)This would make the test more maintainable and less prone to inconsistencies if the
change.NewPacksignature changes in the future.Also applies to: 559-559
api/docs/yorkie/v1/admin.openapi.yaml (2)
2240-2250: LGTM: Introduction of VersionVector schemaThe introduction of the
yorkie.v1.VersionVectorschema is a crucial addition that enables the implementation of vector clocks, addressing the core objective of this PR. The structure, with a singlevectorproperty of type object, is appropriate for representing version vectors.Consider adding a brief description to the
VersionVectorschema to explain its purpose and structure. For example:description: "Represents a version vector used for tracking the state of distributed replicas in the system."
2251-2268: LGTM: Well-structured VectorEntry schemaThe
yorkie.v1.VersionVector.VectorEntryschema is well-defined and appropriately represents the key-value structure for version vector entries. The use ofoneOffor thevalueproperty provides flexibility in representing version numbers.Consider specifying the exact types expected for the
valueproperty instead of usingoneOf. If both string and number are valid types, you could use:value: type: [string, number] description: "The version number for the given key."This makes the expected types more explicit and easier to understand for API consumers.
migrations/v0.5.3/drop-snapshots.go (2)
61-61: Remove unnecessaryfmt.Printlnstatement.Using
fmt.Printlnin library code is not recommended as it can clutter the standard output. Consider removing it or using a logger if necessary.Apply this diff to remove the print statement:
- fmt.Println("drop snapshots completed")
28-48: Ensure consistent function naming.The function is named
validateDropSnapshot, but it checks for the "snapshots" collection. Consider renaming it tovalidateDropSnapshotsfor consistency.Apply this diff to rename the function:
-func validateDropSnapshot(ctx context.Context, db *mongo.Client, databaseName string) error { +func validateDropSnapshots(ctx context.Context, db *mongo.Client, databaseName string) error {pkg/document/change/pack.go (2)
38-41: Clarify the comments for theVersionVectorfieldThe current comments might be confusing. Consider rephrasing them for better clarity and to accurately reflect the purpose of the
VersionVectorfield.Suggested change:
- // VersionVector represents two vectors of the document. - // 1. In request, it is the version vector of the document on the client. - // 2. In response(Snapshot), it is the version vector of the snapshot of the document. + // VersionVector holds the version information of the document. + // - In requests, it represents the client's version vector of the document. + // - In responses (with Snapshot), it represents the server's version vector of the document snapshot. VersionVector time.VersionVector
69-69: Improve the grammar of theHasChangesmethod commentThe current comment can be made clearer and grammatically correct.
Suggested change:
-// HasChanges returns whether pack has changes or not. +// HasChanges returns true if the pack contains changes. func (p *Pack) HasChanges() bool { return len(p.Changes) > 0 }server/packs/snapshots.go (1)
99-106: Update step numbering and comments for clarityThe steps in the comments have been renumbered due to changes in the code flow, specifically with the garbage collection logic. Please ensure that the step numbers and descriptions accurately reflect the updated sequence of operations for better readability and maintainability.
migrations/v0.5.3/add-version-vector.go (2)
53-56: Wrap errors with context for better debuggingWhen returning errors, wrapping them with additional context can aid in debugging. For example, if
versionVector.Keys()returns an error, wrapping it provides more insight into where and why the error occurred.Apply this diff:
if err != nil { - return err + return fmt.Errorf("failed to get version vector keys: %w", err) }
167-167: Use structured logging instead offmt.PrintlnFor consistency and better log management, consider using a structured logger instead of
fmt.Println. This aligns with best practices for logging in Go applications.Apply this diff:
- fmt.Println("add version vector completed") + log.Printf("%s: add version vector completed\n", databaseName)cmd/yorkie/migration.go (2)
166-166: Correct typo in error message: 'then' should be 'than'There's a typo in the error message where "then" should be "than".
Apply the following correction:
if result == 1 { - return fmt.Errorf("to version must be larger then from version: %s %s", from, to) + return fmt.Errorf("to version must be larger than from version: %s %s", from, to) }
52-52: Use a consistent logging mechanism instead offmt.PrintfUsing
fmt.Printffor logging is not recommended for production code. It's better to use a logging library to manage log levels and output destinations consistently.Replace
fmt.Printfwith a logger:At line 52:
if !exists { - fmt.Printf("migration not found for version: %s\n", version) + logger.Infof("Migration not found for version: %s", version) return nil }At line 146:
for _, version := range versions { - fmt.Printf("Running migration for version: %s\n", version) + logger.Infof("Running migration for version: %s", version) if err := runMigration(ctx, db, version, dbName, batchSize); err != nil {Ensure that a logger is properly initialized and configured in your application.
Also applies to: 146-146
server/packs/packs.go (2)
148-151: Address the TODO comment regarding deprecated code.The TODO indicates that this code supports older SDKs that do not use the version vector. Consider creating a plan to remove this code after all SDKs are updated to prevent technical debt.
Would you like me to open a GitHub issue to track the removal of this deprecated code?
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273-278: Handle potential nilVersionVectorin snapshot information.When creating a new internal document from a snapshot, ensure that
snapshotInfo.VersionVectoris not nil to prevent potential runtime panics. If it can be nil, consider adding a check or a default value.pkg/document/internal_document.go (2)
235-235: Address the TODO: Update the root object as wellThere's a TODO comment indicating the need to update the root object when setting the actor. Would you like assistance in implementing this update, or should we create a GitHub issue to track this task?
273-283: ModifyapplySnapshotto includeVersionVectorand address TODOThe
applySnapshotmethod now accepts avector time.VersionVector, which is consistent with the overall changes. However, there's a TODO comment questioning the use ofserverSeqas a Lamport timestamp.Would you like assistance in verifying whether
serverSeqcan be appropriately used as the Lamport timestamp here, or should we open a GitHub issue to ensure this is addressed?pkg/document/document.go (3)
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187-199: Simplify theApplyChangePacklogic by removing thehasSnapshotvariable.You can improve readability by directly using the condition
len(pack.Snapshot) > 0instead of introducing thehasSnapshotvariable.Apply this diff to simplify the code:
-if hasSnapshot { +if len(pack.Snapshot) > 0 { d.cloneRoot = nil d.clonePresences = nil - if err := d.doc.applySnapshot(pack.Snapshot, pack.Checkpoint.ServerSeq, pack.VersionVector); err != nil { + if err := d.doc.applySnapshot(pack.Snapshot, pack.Checkpoint.ServerSeq, pack.VersionVector); err != nil { return err } } else { if err := d.applyChanges(pack.Changes); err != nil { return err } }
310-313: Add documentation for theVersionVectormethod.The new method
VersionVector()lacks a comment explaining its purpose. According to Go conventions, exported functions should have comments.Consider adding a comment like:
+// VersionVector returns the current version vector of the document. func (d *Document) VersionVector() time.VersionVector { return d.doc.VersionVector() }
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341-353: Handle errors instead of panicking inGarbageCollect.Similar to earlier, avoid using
panicin theGarbageCollectmethod. Return the error to the caller to handle appropriately.This will be resolved by the changes suggested in the previous comment regarding error handling in
GarbageCollect.api/converter/from_pb.go (1)
173-191: Implement FromVersionVector to handle VersionVector deserializationThe new
FromVersionVectorfunction correctly converts the ProtobufVersionVectorto the model format, including handling cases wherepbVersionVectorisniland properly converting actor IDs.I noticed the TODO comment regarding old clients not sending
VersionVector. Once support for old clients is deprecated, would you like assistance in refactoring this function to remove the compatibility code?server/backend/database/memory/database.go (2)
1212-1212: Update function documentation forUpdateAndFindMinSyncedTicketThe function now includes additional steps for updating the synced sequence. Update the documentation comments to reflect the current behavior accurately.
Consider modifying the comment to:
-// UpdateAndFindMinSyncedTicket updates the given serverSeq of the given client -// and returns the min synced ticket. +// UpdateAndFindMinSyncedTicket updates the synced sequence for the client +// and returns the minimum synced ticket for the document.
1217-1217: Remove redundant comment blockThe comment starting with
// 01. update synced seq of the given client and document.is repeated in the function. Ensure comments are concise and avoid duplication.Consider removing or consolidating the comment.
📜 Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
⛔ Files ignored due to path filters (13)
api/yorkie/v1/admin.pb.gois excluded by!**/*.pb.goapi/yorkie/v1/resources.pb.gois excluded by!**/*.pb.godesign/media/detached-user-version-vector.jpgis excluded by!**/*.jpgdesign/media/filter-version-vector.jpgis excluded by!**/*.jpgdesign/media/garbage-collection-1.pngis excluded by!**/*.pngdesign/media/garbage-collection-2.pngis excluded by!**/*.pngdesign/media/garbage-collection-3.pngis excluded by!**/*.pngdesign/media/garbage-collection-4.pngis excluded by!**/*.pngdesign/media/garbage-collection-5.pngis excluded by!**/*.pngdesign/media/garbage-collection-6.pngis excluded by!**/*.pngdesign/media/lamport-synced-version-vector-and-version-vector.jpgis excluded by!**/*.jpgdesign/media/prev-gc-issue.jpgis excluded by!**/*.jpgdesign/media/version-vector-example.jpgis excluded by!**/*.jpg
📒 Files selected for processing (49)
- admin/client.go (1 hunks)
- api/converter/from_pb.go (2 hunks)
- api/converter/to_pb.go (3 hunks)
- api/docs/yorkie/v1/admin.openapi.yaml (3 hunks)
- api/docs/yorkie/v1/resources.openapi.yaml (4 hunks)
- api/docs/yorkie/v1/yorkie.openapi.yaml (4 hunks)
- api/yorkie/v1/admin.proto (1 hunks)
- api/yorkie/v1/resources.proto (2 hunks)
- cmd/yorkie/migration.go (1 hunks)
- design/garbage-collection.md (3 hunks)
- design/version-vector.md (1 hunks)
- migrations/v0.5.3/add-version-vector.go (1 hunks)
- migrations/v0.5.3/drop-snapshots.go (1 hunks)
- migrations/v0.5.3/main.go (1 hunks)
- pkg/document/change/change.go (1 hunks)
- pkg/document/change/id.go (5 hunks)
- pkg/document/change/pack.go (1 hunks)
- pkg/document/crdt/root.go (2 hunks)
- pkg/document/crdt/root_test.go (5 hunks)
- pkg/document/document.go (5 hunks)
- pkg/document/document_test.go (2 hunks)
- pkg/document/gc_test.go (5 hunks)
- pkg/document/internal_document.go (11 hunks)
- pkg/document/time/actor_id.go (1 hunks)
- pkg/document/time/ticket.go (1 hunks)
- pkg/document/time/version_vector.go (1 hunks)
- server/backend/database/change_info.go (2 hunks)
- server/backend/database/database.go (3 hunks)
- server/backend/database/memory/database.go (7 hunks)
- server/backend/database/memory/indexes.go (3 hunks)
- server/backend/database/mongo/client.go (13 hunks)
- server/backend/database/mongo/indexes.go (3 hunks)
- server/backend/database/mongo/registry.go (3 hunks)
- server/backend/database/mongo/registry_test.go (1 hunks)
- server/backend/database/snapshot_info.go (3 hunks)
- server/backend/database/testcases/testcases.go (2 hunks)
- server/backend/database/version_vector.go (1 hunks)
- server/clients/clients.go (1 hunks)
- server/packs/packs.go (5 hunks)
- server/packs/pushpull.go (2 hunks)
- server/packs/serverpacks.go (3 hunks)
- server/packs/snapshots.go (4 hunks)
- server/rpc/admin_server.go (1 hunks)
- server/rpc/testcases/testcases.go (4 hunks)
- test/bench/document_bench_test.go (6 hunks)
- test/helper/helper.go (1 hunks)
- test/integration/array_test.go (2 hunks)
- test/integration/gc_test.go (14 hunks)
- test/integration/object_test.go (3 hunks)
🧰 Additional context used
🪛 LanguageTool
design/garbage-collection.md
[uncategorized] ~8-~8: This verb may not be in the correct form. Consider using a different form for this context.
Context: ....3 --- # Garbage Collection ## Before watch this document In this document, the te...(AI_EN_LECTOR_REPLACEMENT_VERB_FORM)
[uncategorized] ~31-~31: Possible missing article found.
Context: ...mple and lightweight to use, but it has crucial weakness that Lamport doesn't guarantee...(AI_HYDRA_LEO_MISSING_THE)
[uncategorized] ~31-~31: Possible missing comma found.
Context: ... lightweight to use, but it has crucial weakness that Lamport doesn't guarantee causalit...(AI_HYDRA_LEO_MISSING_COMMA)
[style] ~34-~34: This phrasing can be wordy, so consider using a more descriptive and concise alternative.
Context: ...-gc-issue](media/prev-gc-issue.jpg) As you can see from the image above,min_synced_seqdoesn...(AS_YOU_CAN_SEE)
[uncategorized] ~39-~39: Possible missing article found.
Context: ...d remotely and purges them completely. Server records the version vector of the last ...(AI_HYDRA_LEO_MISSING_THE)
[uncategorized] ~40-~40: You might be missing the article “the” here.
Context: ...never the client requests PushPull. And Server returns the min version vector, `minVer...(AI_EN_LECTOR_MISSING_DETERMINER_THE)
[uncategorized] ~40-~40: Possible missing preposition found.
Context: ...rsionVectorof all clients in response PushPull to the client.minVersionVector` is us...(AI_EN_LECTOR_MISSING_PREPOSITION)
[uncategorized] ~43-~43: You might be missing the article “the” here.
Context: ... vector is the vector which consists of minimum value of every version vector stored in...(AI_EN_LECTOR_MISSING_DETERMINER_THE)
[uncategorized] ~43-~43: You might be missing the article “a” here.
Context: ...ector stored in version vector table in database. Conceptually, min version vector is v...(AI_EN_LECTOR_MISSING_DETERMINER_A)
[uncategorized] ~45-~45: You might be missing the article “a” here.
Context: ...e. Conceptually, min version vector is version vector that is uniformly applied to all...(AI_EN_LECTOR_MISSING_DETERMINER_A)
[uncategorized] ~80-~80: You might be missing the article “the” here.
Context: ...And theClient asends change3ato server through PushPull API and receives as a ...(AI_EN_LECTOR_MISSING_DETERMINER_THE)
[uncategorized] ~82-~82: You might be missing the article “the” here.
Context: ... and it has not been sent (pushpull) to server yet. #### State 3 ![garbage-collectio...(AI_EN_LECTOR_MISSING_DETERMINER_THE)
[uncategorized] ~88-~88: You might be missing the article “the” here.
Context: ....png)Client bpushes change3bto server and receives as a response that `minVer...(AI_EN_LECTOR_MISSING_DETERMINER_THE)
[uncategorized] ~88-~88: You might be missing the article “the” here.
Context: ...ent applies change4, the contents of document are changed toac. This time, all cli...(AI_EN_LECTOR_MISSING_DETERMINER_THE)
[grammar] ~88-~88: The noun should probably be in the singular form.
Context: ...t's still marked as tombstone for every clients, becauseminVersionVector[a] = 1 < 3...(EVERY_EACH_SINGULAR)
[formatting] ~88-~88: If the ‘because’ clause is essential to the meaning, do not use a comma before the clause.
Context: ...ll marked as tombstone for every clients, becauseminVersionVector[a] = 1 < 3#### St...(COMMA_BEFORE_BECAUSE)
[uncategorized] ~100-~100: Possible missing comma found.
Context: ...e-collection-5.png)Client bpushpull but nothing to push or pull. `minVersionVec...(AI_HYDRA_LEO_MISSING_COMMA)
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Context: ...e-collection-6.png)Client apushpull but nothing to push or pull. `minVersionVec...(AI_HYDRA_LEO_MISSING_COMMA)
[uncategorized] ~143-~143: Possible missing preposition found.
Context: ...ort from db.versionVector. So we choose remove only client's version vector from table...(AI_HYDRA_LEO_MISSING_TO)
[uncategorized] ~143-~143: You might be missing the article “the” here.
Context: ...emove only client's version vector from table, and filter minVersionVector by active ...(AI_EN_LECTOR_MISSING_DETERMINER_THE)
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Context: ....Filter([c3]) = {c1:3, c2:3} ``` After client receive this minVersionVector, it will ...(AI_EN_LECTOR_MISSING_DETERMINER_THE)
[uncategorized] ~158-~158: This verb does not appear to agree with the subject. Consider using a different form.
Context: ...([c3]) = {c1:3, c2:3} ``` After client receive this minVersionVector, it will filter i...(AI_EN_LECTOR_REPLACEMENT_VERB_AGREEMENT)
[uncategorized] ~159-~159: This verb does not appear to agree with the subject. Consider using a different form.
Context: ...lamport. The next pushpull request will contains filtered version vector so that eventua...(AI_EN_LECTOR_REPLACEMENT_VERB_AGREEMENT)
[uncategorized] ~159-~159: You might be missing the article “a” here.
Context: ...The next pushpull request will contains filtered version vector so that eventually db.ve...(AI_EN_LECTOR_MISSING_DETERMINER_A)
[uncategorized] ~159-~159: You might be missing the article “the” here.
Context: ...eventually db.version vector will store attached client's version vector only. ![filter-...(AI_EN_LECTOR_MISSING_DETERMINER_THE)
design/version-vector.md
[uncategorized] ~11-~11: Possible missing comma found.
Context: ...on Vector called Lamport Synced Version Vector which consists of Lamport and version v...(AI_HYDRA_LEO_MISSING_COMMA)
[uncategorized] ~23-~23: Possible missing comma found.
Context: ...ructure. ## Proposal Details ### What is Lamport TimestampLamport Timestamps...(AI_HYDRA_LEO_MISSING_COMMA)
[uncategorized] ~24-~24: The verb “are” doesn’t seem to fit in this context, “is” is probably more formally correct.
Context: ... Lamport TimestampLamport Timestampsare a logical clock mechanism used in distr...(AI_HYDRA_LEO_CPT_ARE_IS)
[uncategorized] ~53-~53: Possible missing comma found.
Context: ...ements received, without creating a new max by adding to the maximum found during t...(AI_HYDRA_LEO_MISSING_COMMA)
🪛 Markdownlint
design/garbage-collection.md
69-69: Punctuation: ':'
Trailing punctuation in heading(MD026, no-trailing-punctuation)
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design/version-vector.md
25-25: null
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🔇 Additional comments (114)
server/backend/database/version_vector.go (2)
1-22: LGTM: File structure and imports are well-organized.The file includes the appropriate license header, correct package declaration, and relevant imports from the Yorkie project.
1-31: Overall assessment: Well-implementedVersionVectorInfostruct.This new file successfully introduces the
VersionVectorInfostruct, which is a key component in implementing the version vector feature. The struct definition is clear, properly tagged for BSON serialization, and includes all necessary fields to represent version vector information for documents and clients.The implementation aligns well with the PR objectives of improving garbage collection and change tracking in the Yorkie system. It provides a solid foundation for integrating version vectors into the existing architecture.
migrations/v0.5.3/main.go (3)
1-18: LGTM: Appropriate license header and package declaration.The file includes the correct Apache 2.0 license header and an appropriate package declaration for a v0.5.3 migration package.
20-25: LGTM: Appropriate and well-organized imports.The import statements are correctly organized and include all necessary packages for the migration functionality.
1-40: Implementation aligns well with PR objectives.The
RunMigrationfunction effectively orchestrates the migration process for version 0.5.3, addressing the issues mentioned in #723. It introduces the version vector concept and manages the removal of snapshots, which aligns with the objectives of improving garbage collection and document synchronization.The implementation is clean, well-structured, and doesn't introduce user-facing changes, as specified in the PR summary. Good job on maintaining code quality while introducing this significant change!
server/backend/database/snapshot_info.go (3)
50-50: LGTM! The CreatedAt field type change is consistent.The update of the CreatedAt field type to
gotime.Timeis consistent with the import changes and ensures the use of the standard time package for the creation timestamp.
60-67: LGTM! The DeepCopy method has been correctly updated.The DeepCopy method has been properly updated to include the new VersionVector field and reflect the change in the CreatedAt field type. This ensures that deep copies of SnapshotInfo will correctly replicate all fields.
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1-82: Overall, the changes in this file are well-implemented and align with the PR objectives.The introduction of VersionVector and the related changes improve the snapshot tracking capabilities of the system. The modifications are consistent throughout the file and maintain good coding practices. The suggested minor improvements for additional comments will further enhance the code's readability and maintainability.
server/clients/clients.go (1)
90-101: LGTM: Version vector update aligns with PR objectives.The addition of the version vector update after document detachment aligns well with the PR objectives of adopting vector clocks and improving garbage collection logic. This change should help in accurately tracking the state of documents across the system.
Clarify the purpose of the
nilparameter.Could you please explain the purpose of passing
nilas the last parameter tobe.DB.UpdateVersionVector? This might be important for other developers maintaining the code in the future.Consider adding a comment explaining the version vector update.
To improve code readability and maintainability, consider adding a comment explaining the purpose of updating the version vector after document detachment. This will help other developers understand the importance of this operation in the context of the system's overall functionality.
Potential performance optimization: Consider batch updates.
The current implementation updates the version vector for each document individually within the loop. For clients with many attached documents, this could potentially impact performance. Consider exploring the possibility of batch updates to the version vector if the underlying database supports it.
server/backend/database/mongo/registry_test.go (3)
38-47: LGTM: Effective test for types.ID marshaling and unmarshalingThis new sub-test effectively verifies the correct handling of
types.IDin the BSON marshaling and unmarshaling process. It aligns well with the PR objectives by ensuring that the new system correctly manages IDs, which is crucial for maintaining data integrity in the distributed environment.
50-66: LGTM: Crucial test for VersionVector implementationThis new sub-test is a key addition that directly addresses the PR objectives. It effectively validates the correct marshaling and unmarshaling of
time.VersionVector, which is central to the new approach for managing concurrency and causality of changes. This test ensures that VersionVectors can be accurately serialized and deserialized, which is critical for their use in improving garbage collection accuracy and overall system reliability.
38-66: Summary: Effective test coverage for new VersionVector implementationThe additions to
TestRegistryprovide robust coverage for the newtypes.IDandtime.VersionVectorimplementations. These tests are crucial for ensuring the reliability of the new version vector-based system, directly supporting the PR's objectives of improving garbage collection accuracy and enhancing concurrency management. The clear structure and comprehensive assertions in these tests will help maintain system integrity as further changes are made.pkg/document/time/ticket.go (2)
50-53: Excellent clarification of the Ticket struct's purpose and limitations.The updated comment provides a clear and concise explanation of the
Ticketstruct's role in the system. This change is particularly valuable in the context of the PR objectives, as it:
- Aligns with the shift towards using version vectors for better concurrency management.
- Clearly defines the purpose of
Ticketin determining the order of changes and identifying elements/nodes.- Explicitly states the limitation that
Ticketcannot detect causal relationships or concurrency between changes.This clarification is crucial for developers working with the system, as it helps prevent misuse of the
Ticketstruct for detecting change relationships, which is now handled by the newly introducedVersionVector.
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1-185: Verify the continued relevance of Ticket methods in the new architecture.While the updated comment for the
Ticketstruct provides excellent clarification, it's important to ensure that all methods of theTicketstruct remain relevant and correctly integrated with the newly introducedVersionVectorsystem.Consider reviewing the usage of
Ticketmethods throughout the codebase to verify that they align with the new concurrency management approach. This may include:
- Checking if any methods need to be updated or deprecated.
- Ensuring that the interaction between
TicketandVersionVectoris clearly defined and implemented.- Verifying that the
CompareandAftermethods still provide the correct behavior in the context of the new system architecture.To assist with this verification, you can run the following script to identify all usages of
Ticketmethods in the codebase:This will help ensure that the
Ticketstruct and its methods are being used appropriately in conjunction with the newVersionVectorsystem.✅ Verification successful
Ticket Methods Integration with VersionVector Verified
The
Ticketmethods are appropriately integrated with the newVersionVectorsystem. Only theEqualToOrAftermethod inversion_vector.gointeracts withTicket, ensuring controlled and correct integration.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Find all usages of Ticket methods in the codebase # Search for method calls on Ticket objects echo "Usages of Ticket methods:" rg '\b(t|ticket)\.(NewTicket|ToTestString|Key|Lamport|Delimiter|ActorID|ActorIDHex|ActorIDBytes|After|Compare|SetActorID)\b' --type go # Search for Ticket struct instantiations echo -e "\nTicket struct instantiations:" rg 'Ticket\{' --type goLength of output: 1686
Script:
#!/bin/bash # Description: Find interactions between Ticket and VersionVector in the codebase # Search for files where both Ticket and VersionVector are used rg 'Ticket' --type go | grep -F 'VersionVector' # Alternatively, search for lines where Ticket and VersionVector are mentioned together rg 'Ticket.*VersionVector|VersionVector.*Ticket' --type goLength of output: 298
server/backend/database/change_info.go (2)
43-53: LGTM: Addition of VersionVector field aligns with PR objectivesThe addition of the
VersionVectorfield to theChangeInfostruct is a positive change that directly addresses the PR objective of adopting vector clocks for better concurrency management. This modification will enable more accurate tracking of changes across distributed peers.The use of the
bson:"version_vector"tag ensures proper serialization when storing in MongoDB, maintaining consistency with the existing fields.
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1-134: Summary: Successful integration of VersionVector in ChangeInfoThe changes made to
server/backend/database/change_info.gosuccessfully integrate the newVersionVectorconcept into theChangeInfostruct and its related functionality. These modifications are crucial for implementing the vector clock approach outlined in the PR objectives.Key improvements:
- Addition of
VersionVectorfield toChangeInfostruct.- Integration of
VersionVectorin change ID generation within theToChangemethod.These changes lay a solid foundation for improved concurrency management and more accurate garbage collection in the Yorkie system. The implementation is clean and consistent with the existing codebase structure.
pkg/document/time/actor_id.go (2)
59-60: LGTM! Improved type safety for ActorID.The introduction of the
actorIDtype as a fixed-size byte array enhances type safety and clarity. This change aligns well with the PR objectives by supporting the shift towards a version vector-based approach while maintaining compatibility with the existing 12-byte size.
59-67: Summary: Solid groundwork for version vector implementation.The introduction of the
actorIDtype and its integration into theActorIDstruct lay a strong foundation for the version vector implementation. These changes improve type safety and clarity without breaking existing functionality, aligning well with the PR objectives.To ensure these changes don't introduce any regressions, please run the following verification script:
This script will help identify any potential issues with the ActorID implementation or its usage across the codebase.
✅ Verification successful
Verification Successful: ActorID changes do not introduce regressions.
The executed scripts confirm that the
ActorIDmethods are correctly implemented and consistently used across the codebase. No regressions or issues were found related to the changes.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Verify that the ActorID functionality remains intact after the changes. # Test: Check if ActorID methods still work as expected rg -A 10 'func \(id \*ActorID\)' pkg/document/time/actor_id.go # Test: Verify usage of ActorID across the codebase rg -A 5 'ActorID' # Test: Check for any potential issues with byte array handling rg -A 5 '\[actorIDSize\]byte'Length of output: 139123
api/yorkie/v1/admin.proto (1)
165-165: LGTM! Addition of VersionVector aligns with PR objectives.The inclusion of
VersionVector version_vector = 3;in theGetSnapshotMetaResponsemessage is a positive step towards implementing vector clocks for improved concurrency management. This change maintains backward compatibility while introducing the new versioning mechanism.To ensure consistency across the codebase, please run the following script to verify related updates:
This script will help identify areas that might need additional updates to fully support the new VersionVector field.
✅ Verification successful
Verified! VersionVector integration is consistent across the codebase.
The addition of
version_vectorin theGetSnapshotMetaResponsemessage is properly reflected in the client and snapshot processing code. Additionally, no unresolved issues were found that affect the current implementation.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Verify updates related to VersionVector in GetSnapshotMetaResponse # Test 1: Check for updates in client code echo "Checking for client code updates:" rg -p "GetSnapshotMetaResponse" --type go # Test 2: Check for updates in snapshot processing code echo "Checking for snapshot processing code updates:" rg -p "GetSnapshotMetaResponse.*version_vector" --type go # Test 3: Check for any TODOs related to VersionVector echo "Checking for related TODOs:" rg -p "TODO.*VersionVector" --type goLength of output: 2692
server/backend/database/mongo/indexes.go (3)
43-44: LGTM: New constant for VersionVectors collection.The addition of
ColVersionVectorsconstant is consistent with the PR objectives and follows the existing naming conventions.
150-155: LGTM: New index added to ColSyncedSeqs. Please clarify its purpose.The new index on
doc_id,project_id, andserver_seqfor thesyncedseqscollection looks good. It aligns with the existing index structure and could potentially improve query performance.Could you please provide some context on why this index was added? It doesn't seem directly related to the VersionVector implementation.
Line range hint
1-175: Summary of changes in indexes.goThe changes in this file lay the groundwork for the VersionVector feature in the database layer:
- Added
ColVersionVectorsconstant- Updated
Collectionsslice (not visible in the provided code)- Added a new index to
ColSyncedSeqs- Introduced a new entry for
ColVersionVectorsincollectionInfosThese changes align well with the PR objectives to improve garbage collection accuracy. The structure and naming conventions are consistent with the existing codebase. A few minor suggestions have been made to enhance clarity and documentation.
Overall, the modifications to this file provide a solid foundation for the VersionVector feature implementation.
pkg/document/gc_test.go (2)
28-28: LGTM: Import statement added for helper package.The addition of the helper package import is consistent with the changes in the file and aligns with the PR objectives of adopting vector clocks for improved garbage collection.
143-143: LGTM: Updated final garbage collection call to use MaxVersionVector.This change is consistent with the previous modification and ensures that the final garbage collection after all test steps uses the new vector clock approach, aligning with the PR objectives.
design/version-vector.md (3)
38-40: LGTM! Clear explanation of Yorkie's Logical Clock System.This section provides a concise and effective overview of how Yorkie implements its logical clock system using TimeTickets. It successfully links the concept of Lamport Timestamps to Yorkie's practical implementation.
45-49: LGTM! Excellent explanation of Version Vectors.This section provides a comprehensive and accurate explanation of Version Vectors and their role in distributed systems. The inclusion of an image (version-vector-example.jpg) is particularly helpful in visualizing the concept.
1-66: Excellent design document with clear explanations and helpful visuals.This design document provides a comprehensive and well-structured explanation of Version Vectors and Yorkie's Lamport Synced Version Vector approach. The content is clear, accurate, and enhanced by helpful examples and diagrams. The document effectively introduces the concepts, explains the rationale behind the design decisions, and illustrates the implementation details.
While some minor improvements in formatting and clarity have been suggested, these do not detract from the overall high quality of the document. This design doc serves as an excellent reference for understanding Yorkie's logical clock system and the motivations behind its implementation choices.
🧰 Tools
🪛 LanguageTool
[uncategorized] ~11-~11: Possible missing comma found.
Context: ...on Vector called Lamport Synced Version Vector which consists of Lamport and version v...(AI_HYDRA_LEO_MISSING_COMMA)
[uncategorized] ~23-~23: Possible missing comma found.
Context: ...ructure. ## Proposal Details ### What is Lamport TimestampLamport Timestamps...(AI_HYDRA_LEO_MISSING_COMMA)
[uncategorized] ~24-~24: The verb “are” doesn’t seem to fit in this context, “is” is probably more formally correct.
Context: ... Lamport TimestampLamport Timestampsare a logical clock mechanism used in distr...(AI_HYDRA_LEO_CPT_ARE_IS)
[uncategorized] ~53-~53: Possible missing comma found.
Context: ...ements received, without creating a new max by adding to the maximum found during t...(AI_HYDRA_LEO_MISSING_COMMA)
🪛 Markdownlint
25-25: null
Fenced code blocks should have a language specified(MD040, fenced-code-language)
server/packs/pushpull.go (2)
175-177: LGTM: Addition of VersionVector to ServerPack.The addition of
VersionVectortoServerPackaligns with the PR objectives of introducing version vectors. This change enhances theServerPackwith version information from the document, which is crucial for improving garbage collection accuracy.To ensure this change is properly integrated, please run the following script to check how
VersionVectoris used inServerPackacross the codebase:#!/bin/bash # Description: Verify the usage of VersionVector in ServerPack # Test 1: Check ServerPack struct definition echo "ServerPack struct definition:" ast-grep --pattern $'type ServerPack struct { $$$ VersionVector $$$ $$$ }' # Test 2: Check usage of VersionVector in ServerPack echo "\nUsage of VersionVector in ServerPack:" rg 'ServerPack.*VersionVector'
154-154: Verify the impact of the newnilparameter inNewPack.A new
nilparameter has been added to theNewPackfunction call. This change suggests that theNewPackfunction signature has been modified in another file.Please run the following script to check the
NewPackfunction definition and its usage across the codebase:design/garbage-collection.md (1)
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13-24: Approved: Enhanced Summary section.The expanded summary provides a clearer explanation of tombstones and their role in CRDT systems. This addition helps readers understand the motivation behind garbage collection.
🧰 Tools
🪛 LanguageTool
[uncategorized] ~31-~31: Possible missing article found.
Context: ...mple and lightweight to use, but it has crucial weakness that Lamport doesn't guarantee...(AI_HYDRA_LEO_MISSING_THE)
[uncategorized] ~31-~31: Possible missing comma found.
Context: ... lightweight to use, but it has crucial weakness that Lamport doesn't guarantee causalit...(AI_HYDRA_LEO_MISSING_COMMA)
[style] ~34-~34: This phrasing can be wordy, so consider using a more descriptive and concise alternative.
Context: ...-gc-issue](media/prev-gc-issue.jpg) As you can see from the image above,min_synced_seqdoesn...(AS_YOU_CAN_SEE)
[uncategorized] ~39-~39: Possible missing article found.
Context: ...d remotely and purges them completely. Server records the version vector of the last ...(AI_HYDRA_LEO_MISSING_THE)
[uncategorized] ~40-~40: You might be missing the article “the” here.
Context: ...never the client requests PushPull. And Server returns the min version vector, `minVer...(AI_EN_LECTOR_MISSING_DETERMINER_THE)
[uncategorized] ~40-~40: Possible missing preposition found.
Context: ...rsionVectorof all clients in response PushPull to the client.minVersionVector` is us...(AI_EN_LECTOR_MISSING_PREPOSITION)
[uncategorized] ~43-~43: You might be missing the article “the” here.
Context: ... vector is the vector which consists of minimum value of every version vector stored in...(AI_EN_LECTOR_MISSING_DETERMINER_THE)
[uncategorized] ~43-~43: You might be missing the article “a” here.
Context: ...ector stored in version vector table in database. Conceptually, min version vector is v...(AI_EN_LECTOR_MISSING_DETERMINER_A)
[uncategorized] ~45-~45: You might be missing the article “a” here.
Context: ...e. Conceptually, min version vector is version vector that is uniformly applied to all...(AI_EN_LECTOR_MISSING_DETERMINER_A)
🪛 Markdownlint
69-69: Punctuation: ':'
Trailing punctuation in heading(MD026, no-trailing-punctuation)
48-48: null
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56-56: null
Fenced code blocks should have a language specified(MD040, fenced-code-language)
server/backend/database/memory/indexes.go (2)
29-29: LGTM: New constant for VersionVectors table.The addition of
tblVersionVectorsconstant is consistent with the PR objectives and follows the existing naming convention.
210-219: LGTM: New unique index added to tblSyncedSeqs.The addition of the
doc_id_server_seqindex enhances query performance for document synchronization operations. The uniqueness constraint ensures data integrity by preventing duplicate entries for a document's server sequence.To ensure this change doesn't negatively impact existing queries, please run the following verification:
This script will help identify any existing queries that might need optimization or adjustment due to the new index.
✅ Verification successful
Verified: New unique index
doc_id_server_seqdoes not impact existing queries.No existing queries are affected by the addition of the
doc_id_server_seqindex intblSyncedSeqs. The unique constraint ensures data integrity without disrupting current operations.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Check for existing queries that might be affected by the new index # Search for queries using tblSyncedSeqs rg -i 'tblSyncedSeqs.*Where|tblSyncedSeqs.*Find' --type go # Search for any manual index hints or force index usage rg -i 'UseIndex.*tblSyncedSeqs|ForceIndex.*tblSyncedSeqs' --type goLength of output: 130
pkg/document/crdt/root_test.go (1)
204-207: LGTM: Consistent use of MaxVersionVector in rich text garbage collection testThe change from
time.MaxTickettohelper.MaxVersionVector()is consistent with the previous modifications and aligns with the PR objectives.server/backend/database/database.go (3)
50-51: LGTM: New error constant for change not found scenario.The addition of
ErrChangeNotFoundis appropriate and consistent with other error constants in the file. It will improve error handling when a change cannot be found.
291-297: LGTM: New method for updating version vector.The addition of
UpdateVersionVectoris consistent with the introduction of VersionVector in the system. The method signature follows the interface's conventions.Could you please clarify the specific use case for this method and how it differs from
UpdateAndFindMinSyncedVersionVectorAfterPushPull? This will help ensure that both methods are used appropriately in the implementation.
Line range hint
1-298: Summary: Successful introduction of VersionVector concepts.The changes to this file effectively introduce VersionVector concepts into the
Databaseinterface. This aligns well with the PR objectives of addressing garbage collection issues by moving away from Lamport clocks. The new error constant and methods provide a foundation for more accurate tracking of changes across distributed systems.To further improve the implementation:
- Consider adding more detailed documentation for the new methods, explaining their specific use cases and how they interact with each other.
- Ensure that the implementation of these methods in the concrete database classes (e.g., MongoDB, in-memory) correctly handles the version vector logic.
- Update existing tests or add new ones to cover these new methods and ensure they behave as expected in various scenarios.
test/integration/array_test.go (1)
469-469: Consistent application of version vector in garbage collection.This change mirrors the previous modification, ensuring consistent use of version vectors for garbage collection throughout the test suite. It demonstrates a thorough approach to updating the codebase for the new garbage collection mechanism.
Let's verify the implementation and usage of
MaxVersionVector:#!/bin/bash # Description: Analyze the implementation and usage of MaxVersionVector # Test 1: Check the implementation of MaxVersionVector ast-grep --pattern $'func MaxVersionVector($_) $_' # Test 2: Verify consistent usage across test files rg "MaxVersionVector\(" --type go --glob "test/**/*_test.go"test/bench/document_bench_test.go (4)
33-33: LGTM! Import change reflects updated dependencies.The addition of the
helperpackage import and removal of thetimepackage import align with the changes in garbage collection assertions. This change suggests a shift in how time-related operations are handled, possibly through utility functions in thehelperpackage.
585-585: Improved garbage collection with version vectors.The change from
time.MaxTickettohelper.MaxVersionVector(doc.ActorID())represents a significant improvement in the garbage collection mechanism. This approach is more suitable for distributed systems as it considers the maximum version across all actors, potentially leading to more accurate and efficient garbage collection.
620-620: Consistent application of version vector-based GC.The change to
helper.MaxVersionVector(doc.ActorID())is consistently applied here, maintaining a uniform approach to garbage collection across different tree operations. This consistency is crucial for reliable benchmarking and reflects a systematic improvement in the GC mechanism.
689-689: Comprehensive update to version vector-based GC across all benchmarks.The consistent application of
helper.MaxVersionVector(doc.ActorID())across all benchmark functions represents a thorough and systematic improvement in the garbage collection mechanism. This uniformity ensures that all benchmarks are now using the same version vector-based approach, which is more suitable for distributed systems. The comprehensive nature of this change suggests a significant enhancement in the accuracy and efficiency of garbage collection throughout the Yorkie system.Also applies to: 721-721, 759-759
test/integration/object_test.go (4)
227-227: LGTM! Consistent application of version vector-based GC.This change correctly applies the same version vector-based garbage collection logic to the second document instance (d2). This consistency ensures that both documents are using the improved garbage collection mechanism.
287-287: LGTM! Consider verifying GC behavior across scenarios.This change correctly applies the version vector-based garbage collection to another test case. The consistency in applying this change across different scenarios is commendable.
To ensure the garbage collection logic works correctly across various scenarios, let's verify the implementation:
#!/bin/bash # Search for the GarbageCollect method implementation rg -n "func.*GarbageCollect" pkg/document
669-669: LGTM! Verify comprehensive test coverage.This change consistently applies the version vector-based garbage collection across multiple test cases. The use of
tt.tombstonesfor expected values demonstrates good test design.To ensure comprehensive test coverage, let's verify the range of test cases:
#!/bin/bash # Search for the test cases in the TestObjectSet function rg -n "setTests :=" test/integration/object_test.go
225-225: LGTM! Verify the helper function implementation.The change from using
time.MaxTickettohelper.MaxVersionVector(d1.ActorID())aligns with the PR objective of implementing version vectors for more accurate garbage collection. This should improve the system's ability to determine when all peers have acknowledged a deletion operation.To ensure the correctness of this change, let's verify the implementation of the
helper.MaxVersionVectorfunction:✅ Verification successful
Verified! The
helper.MaxVersionVectorfunction is correctly implemented intest/helper/helper.go, ensuring the garbage collection assertion change aligns with the PR objectives.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Search for the MaxVersionVector function definition rg -n "func MaxVersionVector" test/helperLength of output: 460
Script:
#!/bin/bash # Search for the MaxVersionVector function definition across the entire repository using ast-grep ast-grep --pattern $'func MaxVersionVector($_) $_' .Length of output: 640
api/docs/yorkie/v1/yorkie.openapi.yaml (1)
429-434: LGTM: VersionVector integration aligns with PR objectives.The addition of the
versionVectorfield to theChangeIDschema is a positive change. It supports the adoption of vector clocks as outlined in the PR objectives, which will lead to better management of concurrency and causality of changes in the system.api/docs/yorkie/v1/resources.openapi.yaml (1)
221-226: LGTM: Addition of versionVector to ChangeID schemaThe addition of the
versionVectorproperty to theyorkie.v1.ChangeIDschema aligns well with the PR objectives. This change supports the adoption of vector clocks, which will improve the system's ability to track changes accurately in a distributed environment.server/backend/database/testcases/testcases.go (1)
435-435: Overall, the changes effectively implement version vectors in test cases.The modifications to the
RunFindClosestSnapshotInfoTestfunction successfully integrate version vectors into the test cases. This aligns well with the PR objectives of adopting vector clocks for improved concurrency management and garbage collection accuracy. The changes are consistent and focused, providing a good foundation for testing the new functionality.Also applies to: 552-552, 559-559
api/docs/yorkie/v1/admin.openapi.yaml (3)
702-707: LGTM: Addition of versionVector to ChangeID schemaThe introduction of the
versionVectorproperty to theyorkie.v1.ChangeIDschema aligns well with the PR objectives of implementing version vectors for improved concurrency management. This change is consistent with updates observed in other files and contributes to the overall goal of enhancing the system's ability to handle concurrent edits accurately.
973-978: LGTM: Inclusion of versionVector in GetSnapshotMetaResponseThe addition of the
versionVectorproperty to theyorkie.v1.GetSnapshotMetaResponseschema is a positive change. This modification allows for the inclusion of version information in snapshot metadata responses, which is crucial for maintaining consistency in a distributed system. This change aligns well with the PR objectives of improving the accuracy of garbage collection and document synchronization by providing more detailed versioning information.
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702-2268: Summary: Comprehensive integration of VersionVectorThe changes in this file comprehensively integrate the new
VersionVectorconcept into the Yorkie API specification. The modifications consistently add version vector support to relevant schemas such asChangeIDandGetSnapshotMetaResponse, while also introducing well-structuredVersionVectorandVectorEntryschemas.These changes align perfectly with the PR objectives of improving concurrency management and enhancing the accuracy of garbage collection. The consistent integration of version vectors across different parts of the API will contribute significantly to better handling of concurrent edits and more precise tracking of document states in a distributed environment.
server/packs/snapshots.go (3)
80-80: ConfirmVersionVectoris correctly initialized and utilizedThe
VersionVectoris now being passed todocument.NewInternalDocumentFromSnapshot. Verify thatsnapshotInfo.VersionVectoris properly initialized and thatNewInternalDocumentFromSnapshothandles it correctly to reconstruct the document state.Run the following script to locate where
VersionVectoris initialized and used:#!/bin/bash # Description: Search for initialization and usage of `VersionVector` in `SnapshotInfo` and `NewInternalDocumentFromSnapshot`. # Expected: `VersionVector` should be properly set and utilized in the document reconstruction process. rg 'VersionVector' -g '*.go' -A 5
92-92:⚠️ Potential issueCheck the updated parameters in
change.NewPackAn additional
nilparameter has been added to the call tochange.NewPack, indicating a change in its function signature. Ensure that this aligns with the updated definition ofNewPackand that all other calls to this function are updated accordingly.Run the following script to check the definition and usage of
change.NewPack:#!/bin/bash # Description: Verify the function signature of `change.NewPack` and ensure all calls match the new signature. # Expected: The function `NewPack` should accept the new parameters, and all usages should be updated. rg 'func NewPack' -A 5
99-106: Verify garbage collection logic withminSyncedVersionVectorThe garbage collection process now uses
minSyncedVersionVectorinstead ofminSyncedTicket. Ensure thatdoc.GarbageCollect(minSyncedVersionVector)correctly implements the version vector logic to safely remove tombstones based on clients' version vectors.Run the following script to inspect the implementation of
GarbageCollect:✅ Verification successful
Garbage collection logic correctly utilizes
minSyncedVersionVector.All
GarbageCollectmethod implementations appropriately use the provided version vector to safely remove tombstones based on clients' version vectors.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Retrieve the `GarbageCollect` method to check the usage of `minSyncedVersionVector`. # Expected: `GarbageCollect` should utilize `minSyncedVersionVector` appropriately for garbage collection. rg 'func (d \*Document) GarbageCollect' -A 20Length of output: 47
Script:
#!/bin/bash # Description: Search for all implementations of the `GarbageCollect` method across the codebase. rg 'func .*GarbageCollect' -A 20Length of output: 5018
Script:
#!/bin/bash # Description: Inspect the usage of `vector` within all `GarbageCollect` method implementations to verify correct version vector logic. rg 'func .*GarbageCollect' -A 50 | rg 'vector'Length of output: 833
server/backend/database/mongo/registry.go (4)
37-37: Definition oftVersionVectoris appropriateThe declaration of
tVersionVectorusingreflect.TypeOf(time.VersionVector{})is correct and consistent with the existing type definitions.
52-52: Decoder registration forVersionVectoris correctly implementedRegistering
versionVectorDecoderfortVersionVectorensures thatVersionVectorinstances are properly decoded from BSON. This aligns with the decoder registrations for other types.
57-57: Encoder registration forVersionVectoris correctly implementedRegistering
versionVectorEncoderfortVersionVectorallowsVersionVectorinstances to be properly encoded to BSON. This is consistent with the encoder registrations for other types.
87-107: Implementation ofversionVectorEncoderis soundThe
versionVectorEncoderfunction correctly:
- Validates the input value.
- Converts the
VersionVectorto its Protobuf equivalent.- Marshals the Protobuf message into binary format.
- Writes the binary data using the
ValueWriter.server/packs/serverpacks.go (3)
46-49: Addition ofVersionVectorfield looks goodThe addition of the
VersionVectorfield to theServerPackstruct is appropriate. The comments effectively explain its dual role in requests and responses.
141-147: Assignment ofVersionVectortopbPacklooks goodThe conversion and assignment of
VersionVectortopbPack.VersionVectoris correctly implemented.
102-103: Ensurechange.NewIDacceptsVersionVectorparameterThe
VersionVectoris being passed tochange.NewID. Please verify thatchange.NewIDhas been updated to accept this additional parameter and that all usages ofchange.NewIDthroughout the codebase have been updated accordingly.Run the following script to check the
change.NewIDfunction definition:✅ Verification successful
Verified:
change.NewIDcorrectly accepts theVersionVectorparameter and all usages have been updated accordingly.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Verify that change.NewID accepts VersionVector. # Test: Search for the function definition of change.NewID expecting it has five parameters. ast-grep --pattern $'func NewID($_, $_, $_, $_, $_) $_' pkg/document/change/change_id.goLength of output: 169
Script:
#!/bin/bash # Description: Locate the definition of the change.NewID function across the codebase. # Search for the function definition of NewID with five parameters using ast-grep. ast-grep --pattern $'func NewID($_, $_, $_, $_, $_) $_' .Length of output: 781
Script:
#!/bin/bash # Description: Verify that all usages of change.NewID have been updated to include VersionVector. # Search for all calls to change.NewID and list the number of arguments passed. # Using ast-grep to match function calls with exactly five arguments. ast-grep --pattern $'change.NewID($_, $_, $_, $_, $_)' .Length of output: 1014
pkg/document/crdt/root.go (3)
150-150:⚠️ Potential issueConfirm the correctness of the version vector comparison logic
The use of
vector.EqualToOrAfter(pair.elem.RemovedAt())determines whether an element should be purged based on its removal timestamp relative to the version vector. Ensure that theEqualToOrAftermethod accurately reflects the intended garbage collection semantics, preventing premature or delayed purging of elements.If necessary, consider adding unit tests to validate the comparison logic with various version vector scenarios.
160-160:⚠️ Potential issueValidate version vector comparison for garbage collecting node pairs
In the condition
vector.EqualToOrAfter(pair.Child.RemovedAt()), ensure that the logic correctly decides when to purge child nodes based on their removal timestamps. This is crucial for maintaining the integrity of the CRDT structure during garbage collection.Again, unit tests covering different version vector states can help confirm the correctness of this logic.
146-146: Ensure all invocations ofGarbageCollectuse the updated signatureThe
GarbageCollectmethod now accepts atime.VersionVectorinstead of a*time.Ticket. Please verify that all callers of this method have been updated to use the new signature to prevent any potential compilation or runtime errors.Run the following script to identify any outdated calls to
GarbageCollect:✅ Verification successful
All
GarbageCollectinvocations are using the updated signature.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Find all calls to GarbageCollect that still use the old signature. # Search for invocations of GarbageCollect with a parameter of type *time.Ticket. rg 'GarbageCollect\s*\(\s*&?time\.Ticket' -t goLength of output: 49
pkg/document/time/version_vector.go (1)
199-203: Consistent error handling inKeysmethodIn the
Keysmethod, errors fromActorIDFromBytesare returned to the caller, which is good. Ensure that any function that can produce an error handles it consistently.cmd/yorkie/migration.go (1)
36-41:⚠️ Potential issueDeclare the
mongoConnectionURIvariableThe variable
mongoConnectionURIis used but not declared in this file, which will lead to a compilation error.Add
mongoConnectionURIto the variable declarations:var ( from string to string databaseName string batchSize int + mongoConnectionURI string )Likely invalid or redundant comment.
api/yorkie/v1/resources.proto (3)
48-49: Confirm the addition ofversion_vectormaintains backward compatibilityThe new field
VersionVector version_vector = 7;is added to theChangePackmessage. Ensure that field number7is not previously used or reserved to prevent any conflicts. Adding new fields with unique tag numbers typically maintains backward compatibility in Protobuf, but it's good to double-check.
65-66: Ensure field number uniqueness inChangeIDThe addition of
VersionVector version_vector = 5;to theChangeIDmessage uses field number5. Verify that this field number hasn't been used before inChangeID. Reusing field numbers can lead to backward compatibility issues with existing clients.
68-69: Validate the newVersionVectormessage definitionThe
VersionVectormessage is defined with a map field:map<string, int64> vector = 1;This appears appropriate for representing version vectors. Ensure that all targeted languages and platforms properly support Protobuf's
maptype, as some language implementations may have limitations or specific considerations when handling maps.server/packs/packs.go (3)
144-146: Verify the condition for setting the response version vector.Currently,
respPack.VersionVectoris set only whenrespPack.SnapshotLen() == 0. Ensure that this condition aligns with the intended logic. If a snapshot exists, is it acceptable not to include theVersionVectorin the response?
220-222: Ensure thread safety when accessingminSyncedVersionVectorin the goroutine.Since
storeSnapshotis called asynchronously, verify that usingminSyncedVersionVectorinside the goroutine is safe and does not lead to data races.
298-299:⚠️ Potential issueConsider passing the
VersionVectortoApplyChangePack.
ApplyChangePackis currently called withnilfor the version vector. If the version vector is necessary for correctly applying changes, consider providing it to ensure consistency.admin/client.go (2)
332-336: Integration of VersionVector is correctly implementedThe inclusion of
VersionVectorenhances the accuracy of document versioning. Error handling is appropriately managed.
341-341: Ensure compatibility of 'VersionVector' in document creationConfirm that
document.NewInternalDocumentFromSnapshotcorrectly handles thevectorparameter and that this change is backward compatible with previous implementations.Run the following script to verify the function signature:
pkg/document/internal_document.go (9)
Line range hint
111-126: Addition ofVersionVectorparameter is consistent and correctThe introduction of the
vector time.VersionVectorparameter inNewInternalDocumentFromSnapshotand its usage in initializingchangeIDwithSetClocks(lamport, vector)align with the shift towards using version vectors for better concurrency control.
148-148: UpdatechangeIDinSyncCheckpointto includeVersionVectorIncluding
d.VersionVector()when creating a newchangeIDensures that the version vector is properly synchronized during checkpoint updates.
160-164: Proper handling of snapshots inApplyChangePackThe introduction of the
hasSnapshotvariable and the conditional application of the snapshot usingd.applySnapshot(pack.Snapshot, pack.Checkpoint.ServerSeq, pack.VersionVector)correctly manage the application of snapshots with the new version vector.
185-189: Ensure garbage collection correctly utilizesVersionVectorThe updated garbage collection logic checks for
pack.VersionVectorand callsd.GarbageCollect(pack.VersionVector)when appropriate, aligning with the new approach of using version vectors for garbage collection.
192-198: UpdatechangeIDto reflect active actors inVersionVectorFiltering the
changeID's version vector to include only the actors present inpack.VersionVectorensures that detached clients' lamport clocks are removed, which is important for accurate version tracking.
205-206: UpdateGarbageCollectmethod to useVersionVectorChanging the
GarbageCollectmethod to accept atime.VersionVectorparameter aligns with the updated garbage collection mechanism based on version vectors.
224-224: IncludeVersionVectorinCreateChangePackIncluding the document's
VersionVector()when creating a new change pack ensures that the version vector is propagated correctly, aiding in synchronization.
248-252: Addition ofVersionVector()method is appropriateThe new
VersionVector()method correctly exposes the document's version vector, allowing other components to access it as needed.
333-333: SynchronizechangeIDcorrectly inApplyChangesUsing
d.changeID = d.changeID.SyncClocks(c.ID())ensures that the document'schangeIDis updated to reflect the applied changes' version vectors.api/converter/to_pb.go (5)
139-143: Good addition of error handling inToChangePack.Including error handling for
ToVersionVector(pack.VersionVector)ensures that any issues during the conversion are properly propagated, enhancing the robustness of theToChangePackfunction.
150-150: IncludeVersionVectorinChangePack.Adding the
VersionVectorto the returnedChangePackensures that versioning information is accurately conveyed, which is crucial for synchronization and garbage collection processes.
164-176: UpdateToChangeIDto handleVersionVectorand errors.Modifying
ToChangeIDto convert theVersionVectorand handle any potential errors improves error propagation and includes essential versioning data in theapi.ChangeIDstructure.
178-192: ImplementToVersionVectorwith proper error handling.The new
ToVersionVectorfunction correctly converts aVersionVectorinto its Protobuf representation, handling potential errors during actor ID conversion. This addition supports enhanced version tracking and synchronization.
274-278: Add error handling forToChangeIDinToChanges.By handling errors returned from
ToChangeID, you ensure that any issues during the conversion of change IDs are properly managed, enhancing the robustness of theToChangesfunction.api/converter/from_pb.go (4)
100-104: Code change correctly incorporates VersionVector into FromChangePackThe added code properly handles the conversion of
pbPack.VersionVectorand includes appropriate error handling.
110-119: Ensure proper inclusion of VersionVector and MinSyncedTicket in change.PackThe fields
VersionVectorandMinSyncedTicketare appropriately added to thechange.Packstruct initialization, ensuring all necessary data is included.
158-163: Correctly parse VersionVector in fromChangeIDThe addition of parsing
id.VersionVectorwith proper error handling ensures that thechange.IDincludes the version vector information.
169-169: Include VersionVector when creating new change IDPassing
vectortochange.NewIDensures that the version vector is incorporated into the change ID construction.server/backend/database/memory/database.go (5)
1167-1169: InitializeVersionVectorproperly when no snapshot is foundWhen no snapshot is found, the returned
SnapshotInfoshould have an initializedVersionVectorto preventnilpointer dereferences.
1256-1314: ImplementUpdateVersionVectormethodThe new method
UpdateVersionVectorupdates the version vector for a client-document pair. Ensure that detached clients' version vectors are correctly removed and that the method handles attachment states properly.
1315-1387: ReviewUpdateAndFindMinSyncedVersionVectorAfterPushPullfor correctnessThis method computes the minimum version vector after a push-pull operation. Verify that:
- Attached actor IDs are correctly collected.
- The minimum version vector is properly calculated using attached clients.
- Detached clients' version vectors are excluded.
Consider adding unit tests to cover scenarios with multiple clients attaching and detaching to ensure the method behaves as expected.
Would you like assistance in creating these unit tests?
916-917: EnsureLamportandActorIDare added toChangeInfostructThe fields
LamportandActorIDare assigned inChangeInfo, but it's essential to confirm that these fields exist in theChangeInfostruct definition.Run the following script to verify the
ChangeInfostruct includesLamportandActorIDfields:#!/bin/bash # Description: Check that 'ChangeInfo' struct includes 'Lamport' and 'ActorID'. # Expected: 'ChangeInfo' struct contains 'Lamport int64' and 'ActorID types.ID' fields. # Search for 'ChangeInfo' struct definition. rg -A 15 'type ChangeInfo struct \{' --type go
1090-1097: Ensure consistency inSnapshotInfostruct fieldsNew fields
LamportandVersionVectorare added when creating aSnapshotInfo. Verify that theSnapshotInfostruct includes these fields and that they are correctly handled elsewhere in the codebase.Run the following script to confirm the
SnapshotInfostruct definition includesLamportandVersionVector:#!/bin/bash # Description: Check that 'SnapshotInfo' struct includes 'Lamport' and 'VersionVector'. # Expected: 'SnapshotInfo' struct contains 'Lamport int64' and 'VersionVector time.VersionVector' fields. # Search for 'SnapshotInfo' struct definition. rg -A 10 'type SnapshotInfo struct \{' --type goserver/backend/database/mongo/client.go (8)
520-520: Good practice: Use of constants for field namesReplacing hardcoded strings with the
StatusKeyconstant improves maintainability and reduces the risk of typos.
611-612: Improved maintainability withclientDocInfoKeyusageUsing
clientDocInfoKeyto generate field keys enhances readability and ensures consistent key formatting throughout the code.Also applies to: 615-616, 628-631
882-882: EnsureVersionVectorserialization is handled correctlyPlease verify that
cn.ID().VersionVector()returns data in a format compatible with BSON serialization and that any necessary encoding is handled properly.
1050-1050: Verify serialization ofdoc.VersionVector()Ensure that
doc.VersionVector()produces a value that can be correctly serialized into BSON for storage in the snapshot.
1111-1111: InitializeVersionVectorwhen no snapshot is foundSetting
snapshotInfo.VersionVectortotime.NewVersionVector()ensures proper initialization when no existing snapshot is available.
1173-1173: Use oferrors.Isfor robust error comparisonGood use of
errors.Isfor comparing errors, which handles wrapped errors correctly and enhances error handling reliability.
1449-1450: Consistent use ofclientDocInfoKeyin queriesUsing
clientDocInfoKeyin the query enhances consistency and reduces the chance of errors due to typos in field names.
1535-1537: Addition ofclientDocInfoKeyutility functionThe new function
clientDocInfoKeycentralizes the construction of client document info keys, improving code maintainability and readability.test/integration/gc_test.go (1)
867-868: Check for Unhandled Errors When Attaching DocumentsOn lines 867-868, when attaching
d2toc2, ensure that any errors returned by theAttachmethod are properly handled. Althoughassert.NoErroris used, it's important to verify that the document is correctly attached and ready for subsequent operations.Run the following script to confirm that
d2is properly attached and has a valid version vector:✅ Verification successful
Attachment Error Handling Verified Successfully.
TheAttachmethod correctly handles errors usingassert.NoError, ensuring proper error management and document attachment.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Verify that d2 is attached and has a valid version vector. # Search for Attach calls and ensure errors are checked. rg 'assert.NoError\(t, c2.Attach\(ctx, d2\)\)' test/integration/gc_test.go # Verify that d2's VersionVector is not nil. rg -A 2 'assert.Equal\(t, checkVV\(d2.VersionVector()' test/integration/gc_test.goLength of output: 10349
pkg/document/change/id.go (8)
31-31: Initialization ofInitialIDwithversionVectoris appropriateThe
InitialIDnow includes theversionVector, ensuring that the initial state is correctly initialized with an empty version vector. This is essential for accurately tracking causal relationships from the starting point.
54-58: Addition ofversionVectorfield toIDstruct is well-documentedThe inclusion of the
versionVectorfield in theIDstruct enhances the ability to detect causal relationships between changes. The accompanying comments clearly explain its purpose and how it integrates with the existing Lamport timestamps.
67-74:NewIDfunction updated to includeversionVectorparameterThe
NewIDfunction now accepts aversionVectorparameter, and it initializes theIDstruct accordingly. This change aligns with the addition of theversionVectorfield and ensures consistency throughout the ID initialization process.
80-87:Nextmethod correctly updatesversionVectorIn the
Nextmethod, theversionVectoris deep-copied and updated to reflect the incremented Lamport timestamp for the current actor. This approach maintains the integrity of the version vector and ensures accurate tracking of causal histories.
100-111: Verify the merging logic ofversionVectorinSyncClocksmethodThe
SyncClocksmethod synchronizes both the Lamport timestamp and theversionVectorwith anotherID. It usesid.versionVector.Max(other.versionVector)to merge the version vectors. Ensure that this merging correctly reflects the combined causal histories.Would you like assistance in verifying the correctness of the
versionVectormerging logic inSyncClocks?
112-125: Ensure accurate synchronization inSetClocksmethodThe
SetClocksmethod updates the Lamport timestamp and merges theversionVectorwith the provided vector. Verify that the Lamport timestamp increments correctly and that the mergedversionVectoraccurately represents the combined state.Would you like help in creating tests or scripts to confirm the synchronization logic in
SetClocks?
162-165: Implementation ofVersionVectoraccessor is appropriateThe
VersionVectormethod provides access to theversionVectorfield, adhering to best practices for struct encapsulation and offering external components a way to retrieve version vector information.
167-170:AfterOrEqualmethod correctly determines causal relationshipsThe
AfterOrEqualmethod utilizesversionVector.AfterOrEqualto assess whether the currentIDis causally after or equal to anotherID. This implementation is crucial for accurately maintaining the order of changes.
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Go Benchmark
| Benchmark suite | Current: 475276e | Previous: 5c98c41 | Ratio |
|---|---|---|---|
BenchmarkDocument/constructor_test |
1487 ns/op 1337 B/op 24 allocs/op |
1478 ns/op 1337 B/op 24 allocs/op |
1.01 |
BenchmarkDocument/constructor_test - ns/op |
1487 ns/op |
1478 ns/op |
1.01 |
BenchmarkDocument/constructor_test - B/op |
1337 B/op |
1337 B/op |
1 |
BenchmarkDocument/constructor_test - allocs/op |
24 allocs/op |
24 allocs/op |
1 |
BenchmarkDocument/status_test |
957.1 ns/op 1305 B/op 22 allocs/op |
954.4 ns/op 1305 B/op 22 allocs/op |
1.00 |
BenchmarkDocument/status_test - ns/op |
957.1 ns/op |
954.4 ns/op |
1.00 |
BenchmarkDocument/status_test - B/op |
1305 B/op |
1305 B/op |
1 |
BenchmarkDocument/status_test - allocs/op |
22 allocs/op |
22 allocs/op |
1 |
BenchmarkDocument/equals_test |
7781 ns/op 7529 B/op 134 allocs/op |
8290 ns/op 7529 B/op 134 allocs/op |
0.94 |
BenchmarkDocument/equals_test - ns/op |
7781 ns/op |
8290 ns/op |
0.94 |
BenchmarkDocument/equals_test - B/op |
7529 B/op |
7529 B/op |
1 |
BenchmarkDocument/equals_test - allocs/op |
134 allocs/op |
134 allocs/op |
1 |
BenchmarkDocument/nested_update_test |
19436 ns/op 12395 B/op 264 allocs/op |
17888 ns/op 12395 B/op 264 allocs/op |
1.09 |
BenchmarkDocument/nested_update_test - ns/op |
19436 ns/op |
17888 ns/op |
1.09 |
BenchmarkDocument/nested_update_test - B/op |
12395 B/op |
12395 B/op |
1 |
BenchmarkDocument/nested_update_test - allocs/op |
264 allocs/op |
264 allocs/op |
1 |
BenchmarkDocument/delete_test |
23668 ns/op 15923 B/op 347 allocs/op |
23819 ns/op 15924 B/op 347 allocs/op |
0.99 |
BenchmarkDocument/delete_test - ns/op |
23668 ns/op |
23819 ns/op |
0.99 |
BenchmarkDocument/delete_test - B/op |
15923 B/op |
15924 B/op |
1.00 |
BenchmarkDocument/delete_test - allocs/op |
347 allocs/op |
347 allocs/op |
1 |
BenchmarkDocument/object_test |
8858 ns/op 7073 B/op 122 allocs/op |
8715 ns/op 7073 B/op 122 allocs/op |
1.02 |
BenchmarkDocument/object_test - ns/op |
8858 ns/op |
8715 ns/op |
1.02 |
BenchmarkDocument/object_test - B/op |
7073 B/op |
7073 B/op |
1 |
BenchmarkDocument/object_test - allocs/op |
122 allocs/op |
122 allocs/op |
1 |
BenchmarkDocument/array_test |
29908 ns/op 12203 B/op 278 allocs/op |
30003 ns/op 12203 B/op 278 allocs/op |
1.00 |
BenchmarkDocument/array_test - ns/op |
29908 ns/op |
30003 ns/op |
1.00 |
BenchmarkDocument/array_test - B/op |
12203 B/op |
12203 B/op |
1 |
BenchmarkDocument/array_test - allocs/op |
278 allocs/op |
278 allocs/op |
1 |
BenchmarkDocument/text_test |
32031 ns/op 15324 B/op 492 allocs/op |
32582 ns/op 15323 B/op 492 allocs/op |
0.98 |
BenchmarkDocument/text_test - ns/op |
32031 ns/op |
32582 ns/op |
0.98 |
BenchmarkDocument/text_test - B/op |
15324 B/op |
15323 B/op |
1.00 |
BenchmarkDocument/text_test - allocs/op |
492 allocs/op |
492 allocs/op |
1 |
BenchmarkDocument/text_composition_test |
30499 ns/op 18718 B/op 504 allocs/op |
30465 ns/op 18718 B/op 504 allocs/op |
1.00 |
BenchmarkDocument/text_composition_test - ns/op |
30499 ns/op |
30465 ns/op |
1.00 |
BenchmarkDocument/text_composition_test - B/op |
18718 B/op |
18718 B/op |
1 |
BenchmarkDocument/text_composition_test - allocs/op |
504 allocs/op |
504 allocs/op |
1 |
BenchmarkDocument/rich_text_test |
85143 ns/op 40181 B/op 1183 allocs/op |
83989 ns/op 40180 B/op 1183 allocs/op |
1.01 |
BenchmarkDocument/rich_text_test - ns/op |
85143 ns/op |
83989 ns/op |
1.01 |
BenchmarkDocument/rich_text_test - B/op |
40181 B/op |
40180 B/op |
1.00 |
BenchmarkDocument/rich_text_test - allocs/op |
1183 allocs/op |
1183 allocs/op |
1 |
BenchmarkDocument/counter_test |
18638 ns/op 11874 B/op 258 allocs/op |
18715 ns/op 11874 B/op 258 allocs/op |
1.00 |
BenchmarkDocument/counter_test - ns/op |
18638 ns/op |
18715 ns/op |
1.00 |
BenchmarkDocument/counter_test - B/op |
11874 B/op |
11874 B/op |
1 |
BenchmarkDocument/counter_test - allocs/op |
258 allocs/op |
258 allocs/op |
1 |
BenchmarkDocument/text_edit_gc_100 |
1318211 ns/op 872605 B/op 17282 allocs/op |
1318398 ns/op 872588 B/op 17282 allocs/op |
1.00 |
BenchmarkDocument/text_edit_gc_100 - ns/op |
1318211 ns/op |
1318398 ns/op |
1.00 |
BenchmarkDocument/text_edit_gc_100 - B/op |
872605 B/op |
872588 B/op |
1.00 |
BenchmarkDocument/text_edit_gc_100 - allocs/op |
17282 allocs/op |
17282 allocs/op |
1 |
BenchmarkDocument/text_edit_gc_1000 |
51489621 ns/op 50546796 B/op 186750 allocs/op |
49229668 ns/op 50546116 B/op 186745 allocs/op |
1.05 |
BenchmarkDocument/text_edit_gc_1000 - ns/op |
51489621 ns/op |
49229668 ns/op |
1.05 |
BenchmarkDocument/text_edit_gc_1000 - B/op |
50546796 B/op |
50546116 B/op |
1.00 |
BenchmarkDocument/text_edit_gc_1000 - allocs/op |
186750 allocs/op |
186745 allocs/op |
1.00 |
BenchmarkDocument/text_split_gc_100 |
1945312 ns/op 1589098 B/op 15950 allocs/op |
1976121 ns/op 1589021 B/op 15950 allocs/op |
0.98 |
BenchmarkDocument/text_split_gc_100 - ns/op |
1945312 ns/op |
1976121 ns/op |
0.98 |
BenchmarkDocument/text_split_gc_100 - B/op |
1589098 B/op |
1589021 B/op |
1.00 |
BenchmarkDocument/text_split_gc_100 - allocs/op |
15950 allocs/op |
15950 allocs/op |
1 |
BenchmarkDocument/text_split_gc_1000 |
116153365 ns/op 141483341 B/op 186147 allocs/op |
115654019 ns/op 141482536 B/op 186140 allocs/op |
1.00 |
BenchmarkDocument/text_split_gc_1000 - ns/op |
116153365 ns/op |
115654019 ns/op |
1.00 |
BenchmarkDocument/text_split_gc_1000 - B/op |
141483341 B/op |
141482536 B/op |
1.00 |
BenchmarkDocument/text_split_gc_1000 - allocs/op |
186147 allocs/op |
186140 allocs/op |
1.00 |
BenchmarkDocument/text_delete_all_10000 |
17035997 ns/op 10213994 B/op 55687 allocs/op |
16850572 ns/op 10216722 B/op 55688 allocs/op |
1.01 |
BenchmarkDocument/text_delete_all_10000 - ns/op |
17035997 ns/op |
16850572 ns/op |
1.01 |
BenchmarkDocument/text_delete_all_10000 - B/op |
10213994 B/op |
10216722 B/op |
1.00 |
BenchmarkDocument/text_delete_all_10000 - allocs/op |
55687 allocs/op |
55688 allocs/op |
1.00 |
BenchmarkDocument/text_delete_all_100000 |
299760542 ns/op 142992592 B/op 561725 allocs/op |
279576043 ns/op 142991632 B/op 561751 allocs/op |
1.07 |
BenchmarkDocument/text_delete_all_100000 - ns/op |
299760542 ns/op |
279576043 ns/op |
1.07 |
BenchmarkDocument/text_delete_all_100000 - B/op |
142992592 B/op |
142991632 B/op |
1.00 |
BenchmarkDocument/text_delete_all_100000 - allocs/op |
561725 allocs/op |
561751 allocs/op |
1.00 |
BenchmarkDocument/text_100 |
229875 ns/op 120491 B/op 5182 allocs/op |
223543 ns/op 120491 B/op 5182 allocs/op |
1.03 |
BenchmarkDocument/text_100 - ns/op |
229875 ns/op |
223543 ns/op |
1.03 |
BenchmarkDocument/text_100 - B/op |
120491 B/op |
120491 B/op |
1 |
BenchmarkDocument/text_100 - allocs/op |
5182 allocs/op |
5182 allocs/op |
1 |
BenchmarkDocument/text_1000 |
2474116 ns/op 1171281 B/op 51086 allocs/op |
2368121 ns/op 1171278 B/op 51086 allocs/op |
1.04 |
BenchmarkDocument/text_1000 - ns/op |
2474116 ns/op |
2368121 ns/op |
1.04 |
BenchmarkDocument/text_1000 - B/op |
1171281 B/op |
1171278 B/op |
1.00 |
BenchmarkDocument/text_1000 - allocs/op |
51086 allocs/op |
51086 allocs/op |
1 |
BenchmarkDocument/array_1000 |
1287989 ns/op 1091721 B/op 11834 allocs/op |
1210241 ns/op 1091654 B/op 11833 allocs/op |
1.06 |
BenchmarkDocument/array_1000 - ns/op |
1287989 ns/op |
1210241 ns/op |
1.06 |
BenchmarkDocument/array_1000 - B/op |
1091721 B/op |
1091654 B/op |
1.00 |
BenchmarkDocument/array_1000 - allocs/op |
11834 allocs/op |
11833 allocs/op |
1.00 |
BenchmarkDocument/array_10000 |
13426174 ns/op 9799879 B/op 120297 allocs/op |
13272470 ns/op 9800774 B/op 120300 allocs/op |
1.01 |
BenchmarkDocument/array_10000 - ns/op |
13426174 ns/op |
13272470 ns/op |
1.01 |
BenchmarkDocument/array_10000 - B/op |
9799879 B/op |
9800774 B/op |
1.00 |
BenchmarkDocument/array_10000 - allocs/op |
120297 allocs/op |
120300 allocs/op |
1.00 |
BenchmarkDocument/array_gc_100 |
157229 ns/op 133280 B/op 1266 allocs/op |
146959 ns/op 133267 B/op 1266 allocs/op |
1.07 |
BenchmarkDocument/array_gc_100 - ns/op |
157229 ns/op |
146959 ns/op |
1.07 |
BenchmarkDocument/array_gc_100 - B/op |
133280 B/op |
133267 B/op |
1.00 |
BenchmarkDocument/array_gc_100 - allocs/op |
1266 allocs/op |
1266 allocs/op |
1 |
BenchmarkDocument/array_gc_1000 |
1463877 ns/op 1159774 B/op 12883 allocs/op |
1389662 ns/op 1159727 B/op 12883 allocs/op |
1.05 |
BenchmarkDocument/array_gc_1000 - ns/op |
1463877 ns/op |
1389662 ns/op |
1.05 |
BenchmarkDocument/array_gc_1000 - B/op |
1159774 B/op |
1159727 B/op |
1.00 |
BenchmarkDocument/array_gc_1000 - allocs/op |
12883 allocs/op |
12883 allocs/op |
1 |
BenchmarkDocument/counter_1000 |
214755 ns/op 193337 B/op 5773 allocs/op |
200229 ns/op 193335 B/op 5773 allocs/op |
1.07 |
BenchmarkDocument/counter_1000 - ns/op |
214755 ns/op |
200229 ns/op |
1.07 |
BenchmarkDocument/counter_1000 - B/op |
193337 B/op |
193335 B/op |
1.00 |
BenchmarkDocument/counter_1000 - allocs/op |
5773 allocs/op |
5773 allocs/op |
1 |
BenchmarkDocument/counter_10000 |
2256262 ns/op 2088268 B/op 59780 allocs/op |
2156871 ns/op 2088252 B/op 59780 allocs/op |
1.05 |
BenchmarkDocument/counter_10000 - ns/op |
2256262 ns/op |
2156871 ns/op |
1.05 |
BenchmarkDocument/counter_10000 - B/op |
2088268 B/op |
2088252 B/op |
1.00 |
BenchmarkDocument/counter_10000 - allocs/op |
59780 allocs/op |
59780 allocs/op |
1 |
BenchmarkDocument/object_1000 |
1474387 ns/op 1428544 B/op 9851 allocs/op |
1372086 ns/op 1428335 B/op 9850 allocs/op |
1.07 |
BenchmarkDocument/object_1000 - ns/op |
1474387 ns/op |
1372086 ns/op |
1.07 |
BenchmarkDocument/object_1000 - B/op |
1428544 B/op |
1428335 B/op |
1.00 |
BenchmarkDocument/object_1000 - allocs/op |
9851 allocs/op |
9850 allocs/op |
1.00 |
BenchmarkDocument/object_10000 |
15324418 ns/op 12167565 B/op 100568 allocs/op |
15245075 ns/op 12166590 B/op 100565 allocs/op |
1.01 |
BenchmarkDocument/object_10000 - ns/op |
15324418 ns/op |
15245075 ns/op |
1.01 |
BenchmarkDocument/object_10000 - B/op |
12167565 B/op |
12166590 B/op |
1.00 |
BenchmarkDocument/object_10000 - allocs/op |
100568 allocs/op |
100565 allocs/op |
1.00 |
BenchmarkDocument/tree_100 |
1071315 ns/op 943958 B/op 6103 allocs/op |
1016229 ns/op 943956 B/op 6103 allocs/op |
1.05 |
BenchmarkDocument/tree_100 - ns/op |
1071315 ns/op |
1016229 ns/op |
1.05 |
BenchmarkDocument/tree_100 - B/op |
943958 B/op |
943956 B/op |
1.00 |
BenchmarkDocument/tree_100 - allocs/op |
6103 allocs/op |
6103 allocs/op |
1 |
BenchmarkDocument/tree_1000 |
79423995 ns/op 86460726 B/op 60117 allocs/op |
71493794 ns/op 86460554 B/op 60117 allocs/op |
1.11 |
BenchmarkDocument/tree_1000 - ns/op |
79423995 ns/op |
71493794 ns/op |
1.11 |
BenchmarkDocument/tree_1000 - B/op |
86460726 B/op |
86460554 B/op |
1.00 |
BenchmarkDocument/tree_1000 - allocs/op |
60117 allocs/op |
60117 allocs/op |
1 |
BenchmarkDocument/tree_10000 |
9774674127 ns/op 8580671808 B/op 600245 allocs/op |
9044201689 ns/op 8580662352 B/op 600228 allocs/op |
1.08 |
BenchmarkDocument/tree_10000 - ns/op |
9774674127 ns/op |
9044201689 ns/op |
1.08 |
BenchmarkDocument/tree_10000 - B/op |
8580671808 B/op |
8580662352 B/op |
1.00 |
BenchmarkDocument/tree_10000 - allocs/op |
600245 allocs/op |
600228 allocs/op |
1.00 |
BenchmarkDocument/tree_delete_all_1000 |
81534530 ns/op 87510060 B/op 75270 allocs/op |
73114902 ns/op 87511067 B/op 75273 allocs/op |
1.12 |
BenchmarkDocument/tree_delete_all_1000 - ns/op |
81534530 ns/op |
73114902 ns/op |
1.12 |
BenchmarkDocument/tree_delete_all_1000 - B/op |
87510060 B/op |
87511067 B/op |
1.00 |
BenchmarkDocument/tree_delete_all_1000 - allocs/op |
75270 allocs/op |
75273 allocs/op |
1.00 |
BenchmarkDocument/tree_edit_gc_100 |
4038038 ns/op 4148372 B/op 15147 allocs/op |
3753290 ns/op 4148284 B/op 15147 allocs/op |
1.08 |
BenchmarkDocument/tree_edit_gc_100 - ns/op |
4038038 ns/op |
3753290 ns/op |
1.08 |
BenchmarkDocument/tree_edit_gc_100 - B/op |
4148372 B/op |
4148284 B/op |
1.00 |
BenchmarkDocument/tree_edit_gc_100 - allocs/op |
15147 allocs/op |
15147 allocs/op |
1 |
BenchmarkDocument/tree_edit_gc_1000 |
328567650 ns/op 383746278 B/op 154864 allocs/op |
290429422 ns/op 383746270 B/op 154854 allocs/op |
1.13 |
BenchmarkDocument/tree_edit_gc_1000 - ns/op |
328567650 ns/op |
290429422 ns/op |
1.13 |
BenchmarkDocument/tree_edit_gc_1000 - B/op |
383746278 B/op |
383746270 B/op |
1.00 |
BenchmarkDocument/tree_edit_gc_1000 - allocs/op |
154864 allocs/op |
154854 allocs/op |
1.00 |
BenchmarkDocument/tree_split_gc_100 |
2684789 ns/op 2413163 B/op 11131 allocs/op |
2473951 ns/op 2413014 B/op 11131 allocs/op |
1.09 |
BenchmarkDocument/tree_split_gc_100 - ns/op |
2684789 ns/op |
2473951 ns/op |
1.09 |
BenchmarkDocument/tree_split_gc_100 - B/op |
2413163 B/op |
2413014 B/op |
1.00 |
BenchmarkDocument/tree_split_gc_100 - allocs/op |
11131 allocs/op |
11131 allocs/op |
1 |
BenchmarkDocument/tree_split_gc_1000 |
199607912 ns/op 222252136 B/op 122007 allocs/op |
176464495 ns/op 222253598 B/op 121997 allocs/op |
1.13 |
BenchmarkDocument/tree_split_gc_1000 - ns/op |
199607912 ns/op |
176464495 ns/op |
1.13 |
BenchmarkDocument/tree_split_gc_1000 - B/op |
222252136 B/op |
222253598 B/op |
1.00 |
BenchmarkDocument/tree_split_gc_1000 - allocs/op |
122007 allocs/op |
121997 allocs/op |
1.00 |
BenchmarkRPC/client_to_server |
420071752 ns/op 23106216 B/op 230459 allocs/op |
415265976 ns/op 20242922 B/op 229592 allocs/op |
1.01 |
BenchmarkRPC/client_to_server - ns/op |
420071752 ns/op |
415265976 ns/op |
1.01 |
BenchmarkRPC/client_to_server - B/op |
23106216 B/op |
20242922 B/op |
1.14 |
BenchmarkRPC/client_to_server - allocs/op |
230459 allocs/op |
229592 allocs/op |
1.00 |
BenchmarkRPC/client_to_client_via_server |
785680772 ns/op 41542380 B/op 484251 allocs/op |
776282514 ns/op 42340176 B/op 484270 allocs/op |
1.01 |
BenchmarkRPC/client_to_client_via_server - ns/op |
785680772 ns/op |
776282514 ns/op |
1.01 |
BenchmarkRPC/client_to_client_via_server - B/op |
41542380 B/op |
42340176 B/op |
0.98 |
BenchmarkRPC/client_to_client_via_server - allocs/op |
484251 allocs/op |
484270 allocs/op |
1.00 |
BenchmarkRPC/attach_large_document |
1827577919 ns/op 3045947200 B/op 14908 allocs/op |
2017564573 ns/op 3010232456 B/op 14962 allocs/op |
0.91 |
BenchmarkRPC/attach_large_document - ns/op |
1827577919 ns/op |
2017564573 ns/op |
0.91 |
BenchmarkRPC/attach_large_document - B/op |
3045947200 B/op |
3010232456 B/op |
1.01 |
BenchmarkRPC/attach_large_document - allocs/op |
14908 allocs/op |
14962 allocs/op |
1.00 |
BenchmarkRPC/adminCli_to_server |
524518304 ns/op 35953800 B/op 289532 allocs/op |
515687286 ns/op 36362352 B/op 289572 allocs/op |
1.02 |
BenchmarkRPC/adminCli_to_server - ns/op |
524518304 ns/op |
515687286 ns/op |
1.02 |
BenchmarkRPC/adminCli_to_server - B/op |
35953800 B/op |
36362352 B/op |
0.99 |
BenchmarkRPC/adminCli_to_server - allocs/op |
289532 allocs/op |
289572 allocs/op |
1.00 |
BenchmarkLocker |
66.38 ns/op 16 B/op 1 allocs/op |
65.83 ns/op 16 B/op 1 allocs/op |
1.01 |
BenchmarkLocker - ns/op |
66.38 ns/op |
65.83 ns/op |
1.01 |
BenchmarkLocker - B/op |
16 B/op |
16 B/op |
1 |
BenchmarkLocker - allocs/op |
1 allocs/op |
1 allocs/op |
1 |
BenchmarkLockerParallel |
39.73 ns/op 0 B/op 0 allocs/op |
39.04 ns/op 0 B/op 0 allocs/op |
1.02 |
BenchmarkLockerParallel - ns/op |
39.73 ns/op |
39.04 ns/op |
1.02 |
BenchmarkLockerParallel - B/op |
0 B/op |
0 B/op |
1 |
BenchmarkLockerParallel - allocs/op |
0 allocs/op |
0 allocs/op |
1 |
BenchmarkLockerMoreKeys |
152.1 ns/op 15 B/op 0 allocs/op |
152.9 ns/op 15 B/op 0 allocs/op |
0.99 |
BenchmarkLockerMoreKeys - ns/op |
152.1 ns/op |
152.9 ns/op |
0.99 |
BenchmarkLockerMoreKeys - B/op |
15 B/op |
15 B/op |
1 |
BenchmarkLockerMoreKeys - allocs/op |
0 allocs/op |
0 allocs/op |
1 |
BenchmarkChange/Push_10_Changes |
4332435 ns/op 143643 B/op 1572 allocs/op |
4377034 ns/op 143594 B/op 1572 allocs/op |
0.99 |
BenchmarkChange/Push_10_Changes - ns/op |
4332435 ns/op |
4377034 ns/op |
0.99 |
BenchmarkChange/Push_10_Changes - B/op |
143643 B/op |
143594 B/op |
1.00 |
BenchmarkChange/Push_10_Changes - allocs/op |
1572 allocs/op |
1572 allocs/op |
1 |
BenchmarkChange/Push_100_Changes |
15944477 ns/op 699742 B/op 8188 allocs/op |
15913663 ns/op 702478 B/op 8190 allocs/op |
1.00 |
BenchmarkChange/Push_100_Changes - ns/op |
15944477 ns/op |
15913663 ns/op |
1.00 |
BenchmarkChange/Push_100_Changes - B/op |
699742 B/op |
702478 B/op |
1.00 |
BenchmarkChange/Push_100_Changes - allocs/op |
8188 allocs/op |
8190 allocs/op |
1.00 |
BenchmarkChange/Push_1000_Changes |
125446052 ns/op 6709936 B/op 77159 allocs/op |
128384270 ns/op 6764970 B/op 77158 allocs/op |
0.98 |
BenchmarkChange/Push_1000_Changes - ns/op |
125446052 ns/op |
128384270 ns/op |
0.98 |
BenchmarkChange/Push_1000_Changes - B/op |
6709936 B/op |
6764970 B/op |
0.99 |
BenchmarkChange/Push_1000_Changes - allocs/op |
77159 allocs/op |
77158 allocs/op |
1.00 |
BenchmarkChange/Pull_10_Changes |
3595553 ns/op 123954 B/op 1405 allocs/op |
3576690 ns/op 123594 B/op 1405 allocs/op |
1.01 |
BenchmarkChange/Pull_10_Changes - ns/op |
3595553 ns/op |
3576690 ns/op |
1.01 |
BenchmarkChange/Pull_10_Changes - B/op |
123954 B/op |
123594 B/op |
1.00 |
BenchmarkChange/Pull_10_Changes - allocs/op |
1405 allocs/op |
1405 allocs/op |
1 |
BenchmarkChange/Pull_100_Changes |
5101405 ns/op 351408 B/op 4949 allocs/op |
5056277 ns/op 350952 B/op 4949 allocs/op |
1.01 |
BenchmarkChange/Pull_100_Changes - ns/op |
5101405 ns/op |
5056277 ns/op |
1.01 |
BenchmarkChange/Pull_100_Changes - B/op |
351408 B/op |
350952 B/op |
1.00 |
BenchmarkChange/Pull_100_Changes - allocs/op |
4949 allocs/op |
4949 allocs/op |
1 |
BenchmarkChange/Pull_1000_Changes |
10230576 ns/op 2221061 B/op 42668 allocs/op |
10155736 ns/op 2217438 B/op 42668 allocs/op |
1.01 |
BenchmarkChange/Pull_1000_Changes - ns/op |
10230576 ns/op |
10155736 ns/op |
1.01 |
BenchmarkChange/Pull_1000_Changes - B/op |
2221061 B/op |
2217438 B/op |
1.00 |
BenchmarkChange/Pull_1000_Changes - allocs/op |
42668 allocs/op |
42668 allocs/op |
1 |
BenchmarkSnapshot/Push_3KB_snapshot |
17926044 ns/op 811409 B/op 8189 allocs/op |
18063527 ns/op 813824 B/op 8189 allocs/op |
0.99 |
BenchmarkSnapshot/Push_3KB_snapshot - ns/op |
17926044 ns/op |
18063527 ns/op |
0.99 |
BenchmarkSnapshot/Push_3KB_snapshot - B/op |
811409 B/op |
813824 B/op |
1.00 |
BenchmarkSnapshot/Push_3KB_snapshot - allocs/op |
8189 allocs/op |
8189 allocs/op |
1 |
BenchmarkSnapshot/Push_30KB_snapshot |
127409311 ns/op 7236298 B/op 78155 allocs/op |
128291310 ns/op 7129310 B/op 77784 allocs/op |
0.99 |
BenchmarkSnapshot/Push_30KB_snapshot - ns/op |
127409311 ns/op |
128291310 ns/op |
0.99 |
BenchmarkSnapshot/Push_30KB_snapshot - B/op |
7236298 B/op |
7129310 B/op |
1.02 |
BenchmarkSnapshot/Push_30KB_snapshot - allocs/op |
78155 allocs/op |
77784 allocs/op |
1.00 |
BenchmarkSnapshot/Pull_3KB_snapshot |
7119158 ns/op 1138641 B/op 19419 allocs/op |
6982290 ns/op 1137525 B/op 19411 allocs/op |
1.02 |
BenchmarkSnapshot/Pull_3KB_snapshot - ns/op |
7119158 ns/op |
6982290 ns/op |
1.02 |
BenchmarkSnapshot/Pull_3KB_snapshot - B/op |
1138641 B/op |
1137525 B/op |
1.00 |
BenchmarkSnapshot/Pull_3KB_snapshot - allocs/op |
19419 allocs/op |
19411 allocs/op |
1.00 |
BenchmarkSnapshot/Pull_30KB_snapshot |
17409721 ns/op 9297522 B/op 187560 allocs/op |
17419267 ns/op 9288756 B/op 187557 allocs/op |
1.00 |
BenchmarkSnapshot/Pull_30KB_snapshot - ns/op |
17409721 ns/op |
17419267 ns/op |
1.00 |
BenchmarkSnapshot/Pull_30KB_snapshot - B/op |
9297522 B/op |
9288756 B/op |
1.00 |
BenchmarkSnapshot/Pull_30KB_snapshot - allocs/op |
187560 allocs/op |
187557 allocs/op |
1.00 |
BenchmarkSplayTree/stress_test_100000 |
0.1939 ns/op 0 B/op 0 allocs/op |
0.1905 ns/op 0 B/op 0 allocs/op |
1.02 |
BenchmarkSplayTree/stress_test_100000 - ns/op |
0.1939 ns/op |
0.1905 ns/op |
1.02 |
BenchmarkSplayTree/stress_test_100000 - B/op |
0 B/op |
0 B/op |
1 |
BenchmarkSplayTree/stress_test_100000 - allocs/op |
0 allocs/op |
0 allocs/op |
1 |
BenchmarkSplayTree/stress_test_200000 |
0.3856 ns/op 0 B/op 0 allocs/op |
0.3899 ns/op 0 B/op 0 allocs/op |
0.99 |
BenchmarkSplayTree/stress_test_200000 - ns/op |
0.3856 ns/op |
0.3899 ns/op |
0.99 |
BenchmarkSplayTree/stress_test_200000 - B/op |
0 B/op |
0 B/op |
1 |
BenchmarkSplayTree/stress_test_200000 - allocs/op |
0 allocs/op |
0 allocs/op |
1 |
BenchmarkSplayTree/stress_test_300000 |
0.5937 ns/op 0 B/op 0 allocs/op |
0.5971 ns/op 0 B/op 0 allocs/op |
0.99 |
BenchmarkSplayTree/stress_test_300000 - ns/op |
0.5937 ns/op |
0.5971 ns/op |
0.99 |
BenchmarkSplayTree/stress_test_300000 - B/op |
0 B/op |
0 B/op |
1 |
BenchmarkSplayTree/stress_test_300000 - allocs/op |
0 allocs/op |
0 allocs/op |
1 |
BenchmarkSplayTree/random_access_100000 |
0.01296 ns/op 0 B/op 0 allocs/op |
0.01268 ns/op 0 B/op 0 allocs/op |
1.02 |
BenchmarkSplayTree/random_access_100000 - ns/op |
0.01296 ns/op |
0.01268 ns/op |
1.02 |
BenchmarkSplayTree/random_access_100000 - B/op |
0 B/op |
0 B/op |
1 |
BenchmarkSplayTree/random_access_100000 - allocs/op |
0 allocs/op |
0 allocs/op |
1 |
BenchmarkSplayTree/random_access_200000 |
0.02411 ns/op 0 B/op 0 allocs/op |
0.03186 ns/op 0 B/op 0 allocs/op |
0.76 |
BenchmarkSplayTree/random_access_200000 - ns/op |
0.02411 ns/op |
0.03186 ns/op |
0.76 |
BenchmarkSplayTree/random_access_200000 - B/op |
0 B/op |
0 B/op |
1 |
BenchmarkSplayTree/random_access_200000 - allocs/op |
0 allocs/op |
0 allocs/op |
1 |
BenchmarkSplayTree/random_access_300000 |
0.03747 ns/op 0 B/op 0 allocs/op |
0.03566 ns/op 0 B/op 0 allocs/op |
1.05 |
BenchmarkSplayTree/random_access_300000 - ns/op |
0.03747 ns/op |
0.03566 ns/op |
1.05 |
BenchmarkSplayTree/random_access_300000 - B/op |
0 B/op |
0 B/op |
1 |
BenchmarkSplayTree/random_access_300000 - allocs/op |
0 allocs/op |
0 allocs/op |
1 |
BenchmarkSplayTree/editing_trace_bench |
0.002271 ns/op 0 B/op 0 allocs/op |
0.001765 ns/op 0 B/op 0 allocs/op |
1.29 |
BenchmarkSplayTree/editing_trace_bench - ns/op |
0.002271 ns/op |
0.001765 ns/op |
1.29 |
BenchmarkSplayTree/editing_trace_bench - B/op |
0 B/op |
0 B/op |
1 |
BenchmarkSplayTree/editing_trace_bench - allocs/op |
0 allocs/op |
0 allocs/op |
1 |
BenchmarkSync/memory_sync_10_test |
6787 ns/op 1286 B/op 38 allocs/op |
6753 ns/op 1286 B/op 38 allocs/op |
1.01 |
BenchmarkSync/memory_sync_10_test - ns/op |
6787 ns/op |
6753 ns/op |
1.01 |
BenchmarkSync/memory_sync_10_test - B/op |
1286 B/op |
1286 B/op |
1 |
BenchmarkSync/memory_sync_10_test - allocs/op |
38 allocs/op |
38 allocs/op |
1 |
BenchmarkSync/memory_sync_100_test |
52857 ns/op 8694 B/op 276 allocs/op |
51116 ns/op 8644 B/op 273 allocs/op |
1.03 |
BenchmarkSync/memory_sync_100_test - ns/op |
52857 ns/op |
51116 ns/op |
1.03 |
BenchmarkSync/memory_sync_100_test - B/op |
8694 B/op |
8644 B/op |
1.01 |
BenchmarkSync/memory_sync_100_test - allocs/op |
276 allocs/op |
273 allocs/op |
1.01 |
BenchmarkSync/memory_sync_1000_test |
581785 ns/op 74354 B/op 2120 allocs/op |
577990 ns/op 74316 B/op 2116 allocs/op |
1.01 |
BenchmarkSync/memory_sync_1000_test - ns/op |
581785 ns/op |
577990 ns/op |
1.01 |
BenchmarkSync/memory_sync_1000_test - B/op |
74354 B/op |
74316 B/op |
1.00 |
BenchmarkSync/memory_sync_1000_test - allocs/op |
2120 allocs/op |
2116 allocs/op |
1.00 |
BenchmarkSync/memory_sync_10000_test |
7164450 ns/op 746689 B/op 20445 allocs/op |
6917177 ns/op 736410 B/op 20300 allocs/op |
1.04 |
BenchmarkSync/memory_sync_10000_test - ns/op |
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This comment was automatically generated by workflow using github-action-benchmark.
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Actionable comments posted: 8
🧹 Outside diff range and nitpick comments (8)
pkg/document/time/version_vector.go (4)
17-24: Consider renaming the package to avoid confusion with the standard libraryThe package name "time" might be confusing as it's the same as Go's standard library "time" package. Consider renaming it to something more specific to your domain, such as "versionvector" or "yorkie_time".
115-118: Update the comment for the EqualToOrAfter methodThe current comment for the
EqualToOrAftermethod is not accurate. It suggests that the method checks every field, but it only compares the version for a specific actor.Consider updating the comment to:
// EqualToOrAfter checks if this VersionVector's version for the given actor is equal to or after the given ticket's Lamport timestamp.This more accurately describes the method's behavior.
170-181: Minor optimization for MaxLamport methodThe
MaxLamportmethod is correct, but a small optimization can be made.Consider this slight modification:
func (v VersionVector) MaxLamport() int64 { if len(v) == 0 { return 0 // or return an error if an empty vector is invalid } var maxLamport int64 first := true for _, value := range v { if first || value > maxLamport { maxLamport = value first = false } } return maxLamport }This approach avoids initializing
maxLamportto an arbitrary negative value and handles the case of an empty vector explicitly.
1-208: Overall assessment of VersionVector implementationThe VersionVector implementation is generally well-structured and functional. Key points from the review:
- Consider renaming the package to avoid confusion with the standard library's "time" package.
- Minor improvements can be made to error handling, particularly in the
Marshalmethod.- Some methods (e.g.,
Min,Max,AfterOrEqual) can be simplified for better readability and efficiency.- A few comments need updating to accurately reflect the methods' behavior.
- Consider minor optimizations in methods like
MaxLamport.These changes will enhance the code's robustness, readability, and maintainability. Great job on the overall implementation!
cmd/yorkie/migration.go (4)
71-71: Enhance error message with detailed parsing errorAt line 71, when parsing a version fails, the error message only specifies the version string. Including the original parsing error provides more context for troubleshooting.
Apply this diff to include the parsing error:
- return nil, fmt.Errorf("invalid version format: %s", version) + return nil, fmt.Errorf("invalid version format '%s': %v", version, err)
44-46: Consider automating migration registrationCurrently, the
migrationMapat lines 44-46 contains only one migration. As the number of migrations grows, manually updating this map might become error-prone.Consider implementing a mechanism to automatically register migrations, such as:
- Using an initialization function in each migration package that registers itself.
- Scanning a directory for migration files and registering them dynamically.
This will reduce manual overhead and prevent missed migrations.
33-34: Remove unused import"github.com/yorkie-team/yorkie/cmd/yorkie/config"The import at line 31 is not used in the file. Unused imports can clutter the code and should be removed.
Apply this diff to remove the unused import:
import ( "context" "fmt" "sort" "strconv" "strings" "github.com/spf13/cobra" "go.mongodb.org/mongo-driver/bson" "go.mongodb.org/mongo-driver/mongo" "go.mongodb.org/mongo-driver/mongo/options" - "github.com/yorkie-team/yorkie/cmd/yorkie/config" v053 "github.com/yorkie-team/yorkie/migrations/v0.5.3" yorkiemongo "github.com/yorkie-team/yorkie/server/backend/database/mongo" )
226-230: UseuintforbatchSizesince it cannot be negativeThe
batchSizeat line 226 is declared as anint, but it represents a size that cannot be negative.Change the type of
batchSizetouint:-var batchSize int +var batchSize uint cmd.Flags().IntVar( &batchSize, "batch-size", 1000, "batch size of migration", )Also, update the
IntVarmethod toUintVar:-cmd.Flags().IntVar( +cmd.Flags().UintVar(
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Review profile: CHILL
📒 Files selected for processing (3)
- cmd/yorkie/migration.go (1 hunks)
- migrations/v0.5.3/drop-snapshots.go (1 hunks)
- pkg/document/time/version_vector.go (1 hunks)
🚧 Files skipped from review as they are similar to previous changes (1)
- migrations/v0.5.3/drop-snapshots.go
🧰 Additional context used
🔇 Additional comments (8)
pkg/document/time/version_vector.go (7)
26-27: LGTM: InitialVersionVector declarationThe declaration and initialization of InitialVersionVector are correct and well-commented.
29-31: LGTM: VersionVector type declarationThe VersionVector type is well-defined and adequately commented.
33-36: LGTM: NewVersionVector functionThe NewVersionVector function is correctly implemented and well-commented.
38-41: LGTM: Set methodThe Set method is correctly implemented and well-commented.
43-46: LGTM: Unset methodThe Unset method is correctly implemented and well-commented.
48-51: LGTM: VersionOf methodThe VersionOf method is correctly implemented and well-commented.
53-60:⚠️ Potential issueAvoid variable shadowing in the DeepCopy method
In the
DeepCopymethod, the loop variablevshadows the receiverv. This can lead to confusion and potential bugs.Apply this diff to rename the loop variable:
func (v VersionVector) DeepCopy() VersionVector { copied := NewVersionVector() - for k, v := range v { - copied[k] = v + for k, val := range v { + copied[k] = val } return copied }Likely invalid or redundant comment.
cmd/yorkie/migration.go (1)
163-170: Confirm handling of equal 'from' and 'to' versionsIn the
RunEfunction at lines 163-170, whenfromandtoversions are equal,compareVersionsreturns0. Currently, the code does not allow running migrations when versions are equal.Ensure that it's acceptable to run migrations when the versions are the same or adjust the logic if necessary.
If you need assistance modifying the logic to allow migrations when versions are equal, let me know.
cmd/yorkie/migration.go
Outdated
| sort.Slice(versions, func(i, j int) bool { | ||
| compare, err := compareVersions(versions[i], versions[j]) | ||
| if err != nil { | ||
| fmt.Printf("Error comparing versions: %v\n", err) | ||
| return false | ||
| } | ||
| return compare == -1 | ||
| }) |
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🛠️ Refactor suggestion
Handle errors properly during version sorting in getMigrationVersionsInRange
In the sorting function at lines 128-135, if an error occurs in compareVersions, it is printed, and false is returned. This could result in incorrect sorting and silent failures.
Consider validating versions before sorting to avoid errors during the sort, or modify the sorting function to handle errors appropriately.
Option 1: Validate versions before sorting
Validate all versions prior to sorting:
// Before sorting, validate all versions
for _, version := range versions {
_, err := parseVersion(version)
if err != nil {
return nil, fmt.Errorf("invalid version format: %s", version)
}
}Option 2: Modify the sorting function to handle errors
Refactor the sorting logic to handle errors explicitly:
sort.Slice(versions, func(i, j int) bool {
compare, err := compareVersions(versions[i], versions[j])
if err != nil {
- fmt.Printf("Error comparing versions: %v\n", err)
+ // Handle the error, possibly by returning from the function
+ panic(fmt.Sprintf("Error comparing versions: %v", err))
}
return compare == -1
})Alternatively, you could accumulate errors and return them after sorting.
cmd/yorkie/migration.go
Outdated
| } | ||
|
|
||
| if result == 1 { | ||
| return fmt.Errorf("to version must be larger then from version: %s %s", from, to) |
There was a problem hiding this comment.
Typo in error message: 'then' should be 'than'
At line 169, there's a typo in the error message. The word "then" should be "than" to correct the grammar.
Apply this diff to fix the typo:
- return fmt.Errorf("to version must be larger then from version: %s %s", from, to)
+ return fmt.Errorf("to version must be larger than from version: %s %s", from, to)📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| return fmt.Errorf("to version must be larger then from version: %s %s", from, to) | |
| return fmt.Errorf("to version must be larger than from version: %s %s", from, to) |
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Actionable comments posted: 3
🧹 Outside diff range and nitpick comments (7)
cmd/yorkie/migration.go (3)
62-78: Add input validation for version numbersThe version parsing could be more robust by validating that:
- Version numbers are non-negative
- Version string has a reasonable maximum length
- Number of version parts doesn't exceed a reasonable limit
Example validation:
func parseVersion(version string) ([]int, error) { + if len(version) > 50 { // reasonable max length + return nil, fmt.Errorf("version string too long: %s", version) + } version = strings.TrimPrefix(version, "v") parts := strings.Split(version, ".") + if len(parts) > 5 { // reasonable max parts + return nil, fmt.Errorf("too many version parts: %s", version) + } result := make([]int, len(parts)) for i, part := range parts { num, err := strconv.Atoi(part) if err != nil { return nil, fmt.Errorf("invalid version format: %s", version) } + if num < 0 { + return nil, fmt.Errorf("negative version numbers not allowed: %s", version) + } result[i] = num }
139-154: Add progress tracking for long-running migrationsFor better observability during long-running migrations, consider adding progress tracking.
func runMigrationsInRange(ctx context.Context, db *mongo.Client, from, to, dbName string, batchSize int) error { versions, err := getMigrationVersionsInRange(from, to) if err != nil { return err } + total := len(versions) + fmt.Printf("Found %d migrations to run\n", total) for _, version := range versions { - fmt.Printf("Running migration for version: %s\n", version) + fmt.Printf("[%d/%d] Running migration for version: %s\n", i+1, total, version) if err := runMigration(ctx, db, version, dbName, batchSize); err != nil { return fmt.Errorf("run migration for version %s: %w", version, err) } + fmt.Printf("[%d/%d] Completed migration for version: %s\n", i+1, total, version) }
210-245: Add validation for batch size flagConsider adding validation to ensure the batch size is within reasonable limits.
cmd.Flags().IntVar( &batchSize, "batch-size", 1000, "batch size of migration", ) + cmd.PreRunE = func(cmd *cobra.Command, args []string) error { + if err := config.Preload(); err != nil { + return err + } + if batchSize < 1 || batchSize > 10000 { + return fmt.Errorf("batch-size must be between 1 and 10000") + } + return nil + }api/docs/yorkie/v1/yorkie.openapi.yaml (2)
1563-1573: Add description for the VersionVector schema.The schema structure is correct, but it would benefit from a clear description explaining its purpose and usage in the versioning system.
Add a description like:
yorkie.v1.VersionVector: additionalProperties: false - description: "" + description: "VersionVector represents a vector clock used for tracking causality of changes across distributed peers. It maintains a mapping of actor IDs to their local logical clocks." properties: vector:
1574-1591: Add description for the VectorEntry schema.The schema structure is correct, but it would benefit from a clear description explaining the entry format.
Add a description like:
yorkie.v1.VersionVector.VectorEntry: additionalProperties: false - description: "" + description: "VectorEntry represents a single entry in the version vector, mapping an actor ID (key) to its logical clock value (value)." properties:api/docs/yorkie/v1/resources.openapi.yaml (2)
271-276: LGTM! Consider enhancing documentation.The addition of
versionVectorto replaceminSyncedTicketaligns with the PR objectives of improving garbage collection accuracy.Consider adding a description field to explain:
- The purpose of versionVector in ChangePack
- The relationship with the deprecated minSyncedTicket
- The impact on garbage collection
1766-1794: Add descriptions to the VersionVector schemas.The schema structure is well-designed, but lacks descriptive documentation. Consider adding descriptions to explain:
- The purpose and behavior of VersionVector
- The format and meaning of vector entries
- The significance of key-value pairs in VectorEntry
Example improvements:
yorkie.v1.VersionVector: additionalProperties: false - description: "" + description: "A vector clock implementation that tracks versions across distributed peers, used for causality tracking and garbage collection." properties: vector: additionalProperties: false - description: "" + description: "A map of peer identifiers to their respective version numbers." title: vector type: objectyorkie.v1.VersionVector.VectorEntry: additionalProperties: false - description: "" + description: "A single entry in the version vector, representing a peer's version." properties: key: additionalProperties: false - description: "" + description: "The unique identifier of the peer." title: key type: string value: additionalProperties: false - description: "" + description: "The version number for the peer, supporting both string and numeric representations."
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⛔ Files ignored due to path filters (2)
api/yorkie/v1/admin.pb.gois excluded by!**/*.pb.goapi/yorkie/v1/resources.pb.gois excluded by!**/*.pb.go
📒 Files selected for processing (6)
- api/docs/yorkie/v1/resources.openapi.yaml (3 hunks)
- api/docs/yorkie/v1/yorkie.openapi.yaml (3 hunks)
- api/yorkie/v1/admin.proto (2 hunks)
- api/yorkie/v1/resources.proto (2 hunks)
- cmd/yorkie/migration.go (1 hunks)
- pkg/document/time/version_vector.go (1 hunks)
🚧 Files skipped from review as they are similar to previous changes (3)
- api/yorkie/v1/admin.proto
- api/yorkie/v1/resources.proto
- pkg/document/time/version_vector.go
🧰 Additional context used
🔇 Additional comments (3)
cmd/yorkie/migration.go (1)
48-60: LGTM! Well-structured migration execution function.The function has proper error handling and follows the single responsibility principle.
api/docs/yorkie/v1/yorkie.openapi.yaml (1)
429-434: LGTM! Version Vector integration is well-structured.The integration of VersionVector into ChangeID and ChangePack schemas is implemented correctly:
- Proper schema references are used
- Maintains consistency with existing fields
- Aligns with the PR objective to replace Lamport clocks with vector clocks
Also applies to: 479-484
api/docs/yorkie/v1/resources.openapi.yaml (1)
221-226: Verify the coexistence of lamport and versionVector properties.The schema includes both
lamportandversionVectorproperties. While this might be intentional for backward compatibility during the transition from Lamport clocks to version vectors (as per PR objectives), we should ensure this is the intended design.Consider documenting the deprecation timeline for the
lamportproperty if it will be removed in the future.
| // getMigrationVersionsInRange retrieves the versions between 'from' and 'to' from the migrationMap. | ||
| func getMigrationVersionsInRange(from, to string) ([]string, error) { | ||
| var versions []string | ||
| for version := range migrationMap { | ||
| isAfterFrom, err := compareVersions(version, from) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| isBeforeTo, err := compareVersions(version, to) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| if isAfterFrom >= 0 && isBeforeTo <= 0 { | ||
| versions = append(versions, version) | ||
| } | ||
| } | ||
|
|
||
| sort.Slice(versions, func(i, j int) bool { | ||
| compare, err := compareVersions(versions[i], versions[j]) | ||
| if err != nil { | ||
| panic(fmt.Errorf("error comparing versions: %w", err)) | ||
| } | ||
| return compare == -1 | ||
| }) | ||
|
|
||
| return versions, nil | ||
| } |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Optimize version range checking logic
The current implementation performs redundant version parsing and comparison. Consider validating versions once at the beginning and caching the results.
func getMigrationVersionsInRange(from, to string) ([]string, error) {
+ // Parse range versions once
+ parsedFrom, err := parseVersion(from)
+ if err != nil {
+ return nil, fmt.Errorf("invalid from version: %w", err)
+ }
+ parsedTo, err := parseVersion(to)
+ if err != nil {
+ return nil, fmt.Errorf("invalid to version: %w", err)
+ }
+
+ // Create version cache
+ type versionInfo struct {
+ original string
+ parsed []int
+ }
+ versionCache := make(map[string][]int)
+
var versions []string
for version := range migrationMap {
- isAfterFrom, err := compareVersions(version, from)
+ parsed, err := parseVersion(version)
if err != nil {
- return nil, err
+ return nil, fmt.Errorf("invalid migration version %s: %w", version, err)
}
+ versionCache[version] = parsed
- isBeforeTo, err := compareVersions(version, to)
- if err != nil {
- return nil, err
- }
+ isAfterFrom := compareVersionArrays(parsed, parsedFrom) >= 0
+ isBeforeTo := compareVersionArrays(parsed, parsedTo) <= 0
- if isAfterFrom >= 0 && isBeforeTo <= 0 {
+ if isAfterFrom && isBeforeTo {
versions = append(versions, version)
}
}
sort.Slice(versions, func(i, j int) bool {
- compare, err := compareVersions(versions[i], versions[j])
- if err != nil {
- panic(fmt.Errorf("error comparing versions: %w", err))
- }
- return compare == -1
+ return compareVersionArrays(versionCache[versions[i]], versionCache[versions[j]]) == -1
})
return versions, nil
}
+
+// compareVersionArrays compares two parsed version arrays
+func compareVersionArrays(v1, v2 []int) int {
+ for i := 0; i < len(v1) && i < len(v2); i++ {
+ if v1[i] < v2[i] {
+ return -1
+ } else if v1[i] > v2[i] {
+ return 1
+ }
+ }
+ if len(v1) < len(v2) {
+ return -1
+ } else if len(v1) > len(v2) {
+ return 1
+ }
+ return 0
}Committable suggestion was skipped due to low confidence.
| ctx := context.Background() | ||
| client, err := mongo.Connect( | ||
| ctx, | ||
| options.Client(). | ||
| ApplyURI(mongoConnectionURI). | ||
| SetRegistry(yorkiemongo.NewRegistryBuilder().Build()), | ||
| ) | ||
| if err != nil { | ||
| return fmt.Errorf("connect to mongo: %w", err) | ||
| } |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Enhance MongoDB client configuration
Consider adding timeout and retry options for better reliability.
client, err := mongo.Connect(
ctx,
options.Client().
ApplyURI(mongoConnectionURI).
+ SetConnectTimeout(10 * time.Second).
+ SetServerSelectionTimeout(5 * time.Second).
+ SetRetryWrites(true).
+ SetRetryReads(true).
SetRegistry(yorkiemongo.NewRegistryBuilder().Build()),
)📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| ctx := context.Background() | |
| client, err := mongo.Connect( | |
| ctx, | |
| options.Client(). | |
| ApplyURI(mongoConnectionURI). | |
| SetRegistry(yorkiemongo.NewRegistryBuilder().Build()), | |
| ) | |
| if err != nil { | |
| return fmt.Errorf("connect to mongo: %w", err) | |
| } | |
| ctx := context.Background() | |
| client, err := mongo.Connect( | |
| ctx, | |
| options.Client(). | |
| ApplyURI(mongoConnectionURI). | |
| SetConnectTimeout(10 * time.Second). | |
| SetServerSelectionTimeout(5 * time.Second). | |
| SetRetryWrites(true). | |
| SetRetryReads(true). | |
| SetRegistry(yorkiemongo.NewRegistryBuilder().Build()), | |
| ) | |
| if err != nil { | |
| return fmt.Errorf("connect to mongo: %w", err) | |
| } |
| versionVector: | ||
| $ref: '#/components/schemas/yorkie.v1.VersionVector' | ||
| additionalProperties: false | ||
| description: "" | ||
| title: version_vector | ||
| type: object |
There was a problem hiding this comment.
💡 Codebase verification
🛠️ Refactor suggestion
Based on the search results, I can now generate the final response since we have enough information about both Lamport clock and version vector usage in the API specs.
Both Lamport clock and version vector fields are present without deprecation notices
The search results show that both lamport and versionVector fields are currently present in the API specs without any deprecation notices. Since both fields exist simultaneously:
- The
lamportfield appears in multiple API spec files without any deprecation notice - The
versionVectorfield is also present, suggesting a transition period - Neither field has proper documentation in their description fields
To maintain API clarity during this transition:
- Add deprecation notice to the
lamportfield - Add proper description for the
versionVectorfield explaining its role as the replacement - Consider documenting the migration timeline in the API specs
🔗 Analysis chain
Verify deprecation of Lamport clock fields.
Since the PR aims to replace Lamport clocks with version vectors, consider marking the lamport field in the ChangeID schema as deprecated.
Add deprecation notice:
lamport:
additionalProperties: false
- description: ""
+ description: "Deprecated: This field is being replaced by versionVector for improved distributed causality tracking."
oneOf:
- type: string
- type: number
title: lamportLet me try a different search strategy to verify the Lamport clock usage and deprecation status.
Let's also check for version vector related changes to understand the transition:
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Check if Lamport clock is still being used in the codebase
echo "Searching for Lamport clock usage..."
rg -l "lamport" --type proto
Length of output: 141
Script:
#!/bin/bash
# Search for Lamport clock usage in yaml files and any other relevant files
echo "Searching for Lamport clock usage in API specs..."
rg -l "lamport" --type yaml
# Also check the actual field definition
echo -e "\nChecking the ChangeID schema definition..."
rg "lamport:" -A 5 api/docs/yorkie/v1/yorkie.openapi.yaml
Length of output: 713
Script:
#!/bin/bash
# Search for version vector related definitions
echo "Searching for version vector related definitions..."
rg "versionVector" -A 5 api/docs/yorkie/v1/yorkie.openapi.yaml
Length of output: 588
This commit adds the missing MongoDB sharding configuration for versionvectors collection introduced in PR #1047, as well as updates the related documentation to reflect these changes.
What this PR does / why we need it:
The purpose of this PR is to address a defect found in the existing GC that used syncedSeq, by introducing VersionVector to resolve the issue.
The diagram of the structure can be found at this link.
Here are the four key points to focus on:
1. What is Lamport Synced Version Vector
Definition of Version Vector
Since we're using lamport timestamp to handle CRDT, we implement Lamport Synced Version Vector which is quite different from original Version Vector.
Lamport Synced Version Vector allows us to continue using the existing method that relied on Lamport.
It is key:value map consist of actorID and lamport.
As you can see from the image above, which is typical version vector example, client's value(lamport in our case) is not the largest at every moment.
For convenience, I will refer to Lamport Synced Version Vector as the version vector from now on.
When creating a new change, we increment both the lamport and the lamport in the version vector to use as the ID. Thus, we don't need to use version vector as ID, but use as a part of ID. You can see how it is used in the modified code (see changeID parts).
When receiving a new change, compute max version vector by using version vector from change and document's version vector.
2. How to store version vector into database and update it when receives change
updateVersionVector,updateAndFindMinSyncedVersionVectorAfterPushPull)3. What is min version vector and how to solve GC problem
Min version vector is the vector which consists of minimum value of every version vector stored in version vector table in database.
Conceptually, min version vector is version vector that is uniformly applied to all users. It ensures that all users have at least this version applied. Which means that it is safe to perform GC.
You can see detailed logic from
UpdateAndFindMinVersionVectorAfterPushPullin modified codes.Suppose clientA is performing pushpull
GC algorithm
If node.removedAt.lamport is smaller or equal to every value in min version vector, then run GC.
It's okay to run GC when its equal, because the meaning of min version vector is that every client's version vector is at least larger then min version vector.
4. How to handle detached client's version vector
If detached client's version vector remains in database and local document, its memory wasting and also GC will not performed.
So it's necessary to remove detached client's version vector and its lamport from other's version vector.
By the way, the code is a bit messy, so any reviews are always welcome. If you have any ideas for improvements, feel free to share them.
Which issue(s) this PR fixes:
Address #723
Special notes for your reviewer:
Does this PR introduce a user-facing change?:
Additional documentation:
Checklist:
Summary by CodeRabbit
New Features
VersionVectorfield to multiple response schemas and structures, includingGetSnapshotMetaResponseandServerPack.Bug Fixes
Documentation
Tests
Chores