-
Notifications
You must be signed in to change notification settings - Fork 525
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
Showing
13 changed files
with
1,212 additions
and
6 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,265 @@ | ||
| // Licensed to Elasticsearch B.V. under one or more contributor | ||
| // license agreements. See the NOTICE file distributed with | ||
| // this work for additional information regarding copyright | ||
| // ownership. Elasticsearch B.V. licenses this file to you under | ||
| // the Apache License, Version 2.0 (the "License"); you may | ||
| // not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, | ||
| // software distributed under the License is distributed on an | ||
| // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | ||
| // KIND, either express or implied. See the License for the | ||
| // specific language governing permissions and limitations | ||
| // under the License. | ||
|
|
||
| package profile | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "io" | ||
| "net/http" | ||
| "strings" | ||
|
|
||
| pprof_profile "github.com/google/pprof/profile" | ||
| "github.com/pkg/errors" | ||
|
|
||
| "github.com/elastic/beats/libbeat/monitoring" | ||
|
|
||
| "github.com/elastic/apm-server/beater/headers" | ||
| "github.com/elastic/apm-server/beater/request" | ||
| "github.com/elastic/apm-server/decoder" | ||
| "github.com/elastic/apm-server/model/metadata" | ||
| "github.com/elastic/apm-server/model/profile" | ||
| "github.com/elastic/apm-server/publish" | ||
| "github.com/elastic/apm-server/transform" | ||
| "github.com/elastic/apm-server/utility" | ||
| "github.com/elastic/apm-server/validation" | ||
| ) | ||
|
|
||
| var ( | ||
| // MonitoringMap holds a mapping for request.IDs to monitoring counters | ||
| MonitoringMap = request.MonitoringMapForRegistry(registry) | ||
| registry = monitoring.Default.NewRegistry("apm-server.profile", monitoring.PublishExpvar) | ||
| ) | ||
|
|
||
| const ( | ||
| // TODO(axw) include messageType in pprofContentType; needs fix in agent | ||
| pprofContentType = "application/x-protobuf" | ||
| metadataContentType = "application/json" | ||
| requestContentType = "multipart/form-data" | ||
| ) | ||
|
|
||
| // Handler returns a request.Handler for managing profile requests. | ||
| func Handler( | ||
| dec decoder.ReqDecoder, | ||
| transformConfig transform.Config, | ||
| report publish.Reporter, | ||
| ) request.Handler { | ||
| handle := func(c *request.Context) (*result, error) { | ||
| if c.Request.Method != http.MethodPost { | ||
| return nil, requestError{ | ||
| id: request.IDResponseErrorsMethodNotAllowed, | ||
| err: errors.New("only POST requests are supported"), | ||
| } | ||
| } | ||
| if err := validateContentType(c.Request.Header, requestContentType); err != nil { | ||
| return nil, requestError{ | ||
| id: request.IDResponseErrorsValidate, | ||
| err: err, | ||
| } | ||
| } | ||
|
|
||
| ok := c.RateLimiter == nil || c.RateLimiter.Allow() | ||
| if !ok { | ||
| return nil, requestError{ | ||
| id: request.IDResponseErrorsRateLimit, | ||
| err: errors.New("rate limit exceeded"), | ||
| } | ||
| } | ||
|
|
||
| // Extract metadata from the request, like user-agent and remote address. | ||
| reqMeta, err := dec(c.Request) | ||
| if err != nil { | ||
| return nil, requestError{ | ||
| id: request.IDResponseErrorsDecode, | ||
| err: errors.Wrap(err, "failed to decode request metadata"), | ||
| } | ||
| } | ||
|
|
||
| tctx := &transform.Context{ | ||
| RequestTime: utility.RequestTime(c.Request.Context()), | ||
| Config: transformConfig, | ||
| } | ||
|
|
||
| var totalLimitRemaining int64 = 10 * 1024 * 1024 // 10 MiB ought to be enough for anybody | ||
| var profiles []*pprof_profile.Profile | ||
| mr, err := c.Request.MultipartReader() | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| for { | ||
| part, err := mr.NextPart() | ||
| if err == io.EOF { | ||
| break | ||
| } else if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| switch part.FormName() { | ||
| case "metadata": | ||
| if err := validateContentType(http.Header(part.Header), metadataContentType); err != nil { | ||
| return nil, requestError{ | ||
| id: request.IDResponseErrorsValidate, | ||
| err: errors.Wrap(err, "invalid metadata"), | ||
| } | ||
| } | ||
| r := &limitedReader{r: part, n: 10 * 1024 /* 10 KiB ought to be enough for anybody */} | ||
| raw, err := decoder.DecodeJSONData(r) | ||
| if err != nil { | ||
| if err, ok := r.err.(requestError); ok { | ||
| return nil, err | ||
| } | ||
| return nil, requestError{ | ||
| id: request.IDResponseErrorsDecode, | ||
| err: errors.Wrap(err, "failed to decode metadata JSON"), | ||
| } | ||
| } | ||
| for k, v := range reqMeta { | ||
| utility.InsertInMap(raw, k, v.(map[string]interface{})) | ||
| } | ||
| if err := validation.Validate(raw, metadata.ModelSchema()); err != nil { | ||
| return nil, requestError{ | ||
| id: request.IDResponseErrorsValidate, | ||
| err: errors.Wrap(err, "invalid metadata"), | ||
| } | ||
| } | ||
| metadata, err := metadata.DecodeMetadata(raw) | ||
| if err != nil { | ||
| return nil, requestError{ | ||
| id: request.IDResponseErrorsDecode, | ||
| err: errors.Wrap(err, "failed to decode metadata"), | ||
| } | ||
| } | ||
| tctx.Metadata = *metadata | ||
|
|
||
| case "profile": | ||
| if err := validateContentType(http.Header(part.Header), pprofContentType); err != nil { | ||
| return nil, requestError{ | ||
| id: request.IDResponseErrorsValidate, | ||
| err: errors.Wrap(err, "invalid profile"), | ||
| } | ||
| } | ||
| r := &limitedReader{r: part, n: totalLimitRemaining} | ||
| profile, err := pprof_profile.Parse(r) | ||
| if err != nil { | ||
| if err, ok := r.err.(requestError); ok { | ||
| return nil, err | ||
| } | ||
| return nil, requestError{ | ||
| id: request.IDResponseErrorsDecode, | ||
| err: errors.Wrap(err, "failed to decode profile"), | ||
| } | ||
| } | ||
| profiles = append(profiles, profile) | ||
| totalLimitRemaining = r.n | ||
| } | ||
| } | ||
|
|
||
| transformables := make([]transform.Transformable, len(profiles)) | ||
| for i, p := range profiles { | ||
| transformables[i] = profile.PprofProfile{Profile: p} | ||
| } | ||
|
|
||
| if err := report(c.Request.Context(), publish.PendingReq{ | ||
| Transformables: transformables, | ||
| Tcontext: tctx, | ||
| }); err != nil { | ||
| switch err { | ||
| case publish.ErrChannelClosed: | ||
| return nil, requestError{ | ||
| id: request.IDResponseErrorsShuttingDown, | ||
| err: errors.New("server is shutting down"), | ||
| } | ||
| case publish.ErrFull: | ||
| return nil, requestError{ | ||
| id: request.IDResponseErrorsFullQueue, | ||
| err: err, | ||
| } | ||
| } | ||
| return nil, err | ||
| } | ||
| return &result{Accepted: len(transformables)}, nil | ||
| } | ||
| return func(c *request.Context) { | ||
| result, err := handle(c) | ||
| if err != nil { | ||
| switch err := err.(type) { | ||
| case requestError: | ||
| c.Result.SetWithError(err.id, err) | ||
| default: | ||
| c.Result.SetWithError(request.IDResponseErrorsInternal, err) | ||
| } | ||
| } else { | ||
| c.Result.SetWithBody(request.IDResponseValidAccepted, result) | ||
| } | ||
| c.Write() | ||
| } | ||
| } | ||
|
|
||
| func validateContentType(header http.Header, contentType string) error { | ||
| got := header.Get(headers.ContentType) | ||
| if !strings.Contains(got, contentType) { | ||
| return fmt.Errorf("invalid content type %q, expected %q", got, contentType) | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| // limitedReader is like io.LimitedReader, but returns a | ||
| // requestError upon detecting a request that is too large. | ||
| // | ||
| // Based on net/http.maxBytesReader. | ||
| type limitedReader struct { | ||
| r io.Reader | ||
| n int64 | ||
| err error | ||
| } | ||
|
|
||
| func (l *limitedReader) Read(p []byte) (n int, err error) { | ||
| if l.err != nil || len(p) == 0 { | ||
| return 0, l.err | ||
| } | ||
| if int64(len(p)) > l.n+1 { | ||
| p = p[:l.n+1] | ||
| } | ||
| n, err = l.r.Read(p) | ||
|
|
||
| if int64(n) <= l.n { | ||
| l.n -= int64(n) | ||
| l.err = err | ||
| return n, err | ||
| } | ||
|
|
||
| n = int(l.n) | ||
| l.n = 0 | ||
| l.err = requestError{ | ||
| id: request.IDResponseErrorsRequestTooLarge, | ||
| err: errors.New("too large"), | ||
| } | ||
| return n, l.err | ||
| } | ||
|
|
||
| type result struct { | ||
| Accepted int `json:"accepted"` | ||
| } | ||
|
|
||
| type requestError struct { | ||
| id request.ResultID | ||
| err error | ||
| } | ||
|
|
||
| func (e requestError) Error() string { | ||
| return e.err.Error() | ||
| } |
Oops, something went wrong.