This repository has been archived by the owner on Aug 2, 2022. It is now read-only.
BucketSelector pipeline aggregation extension #374
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
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,255 @@ | ||
| /* | ||
| * Copyright 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved. | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"). | ||
| * You may not use this file except in compliance with the License. | ||
| * A copy of the License is located at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * or in the "license" file accompanying this file. This file 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 com.amazon.opendistroforelasticsearch.alerting.aggregation.bucketselectorext | ||
|
|
||
| import com.amazon.opendistroforelasticsearch.alerting.aggregation.bucketselectorext.BucketSelectorExtFilter.Companion.BUCKET_SELECTOR_COMPOSITE_AGG_FILTER | ||
| import com.amazon.opendistroforelasticsearch.alerting.aggregation.bucketselectorext.BucketSelectorExtFilter.Companion.BUCKET_SELECTOR_FILTER | ||
| import org.elasticsearch.common.ParseField | ||
| import org.elasticsearch.common.ParsingException | ||
| import org.elasticsearch.common.io.stream.StreamInput | ||
| import org.elasticsearch.common.io.stream.StreamOutput | ||
| import org.elasticsearch.common.xcontent.ToXContent.Params | ||
| import org.elasticsearch.common.xcontent.XContentBuilder | ||
| import org.elasticsearch.common.xcontent.XContentParser | ||
| import org.elasticsearch.script.Script | ||
| import org.elasticsearch.search.aggregations.pipeline.AbstractPipelineAggregationBuilder | ||
| import org.elasticsearch.search.aggregations.pipeline.BucketHelpers.GapPolicy | ||
| import org.elasticsearch.search.aggregations.pipeline.PipelineAggregator | ||
| import java.io.IOException | ||
| import java.util.Objects | ||
|
|
||
| class BucketSelectorExtAggregationBuilder : | ||
| AbstractPipelineAggregationBuilder<BucketSelectorExtAggregationBuilder> { | ||
| private val bucketsPathsMap: MutableMap<String, String> | ||
| private val parentBucketPath: String | ||
| val script: Script | ||
| val filter: BucketSelectorExtFilter? | ||
| private var gapPolicy = GapPolicy.SKIP | ||
|
|
||
| constructor( | ||
| name: String?, | ||
| bucketsPathsMap: MutableMap<String, String>, | ||
| script: Script, | ||
| parentBucketPath: String, | ||
| filter: BucketSelectorExtFilter? | ||
| ) : super(name, NAME.preferredName, listOf<String>(parentBucketPath).toTypedArray<String>()) { | ||
| this.bucketsPathsMap = bucketsPathsMap | ||
| this.script = script | ||
| this.parentBucketPath = parentBucketPath | ||
| this.filter = filter | ||
| } | ||
|
|
||
| @Throws(IOException::class) | ||
| @Suppress("UNCHECKED_CAST") | ||
| constructor(sin: StreamInput) : super(sin, NAME.preferredName) { | ||
| bucketsPathsMap = sin.readMap() as MutableMap<String, String> | ||
| script = Script(sin) | ||
| gapPolicy = GapPolicy.readFrom(sin) | ||
| parentBucketPath = sin.readString() | ||
| filter = if (sin.readBoolean()) { | ||
| BucketSelectorExtFilter(sin) | ||
| } else { | ||
| null | ||
| } | ||
| } | ||
|
|
||
| @Throws(IOException::class) | ||
| override fun doWriteTo(out: StreamOutput) { | ||
| out.writeMap(bucketsPathsMap as Map<String, String>) | ||
| script.writeTo(out) | ||
| gapPolicy.writeTo(out) | ||
| out.writeString(parentBucketPath) | ||
| if (filter != null) { | ||
| out.writeBoolean(true) | ||
| filter.writeTo(out) | ||
| } else { | ||
| out.writeBoolean(false) | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * Sets the gap policy to use for this aggregation. | ||
| */ | ||
| fun gapPolicy(gapPolicy: GapPolicy?): BucketSelectorExtAggregationBuilder { | ||
| requireNotNull(gapPolicy) { "[gapPolicy] must not be null: [$name]" } | ||
| this.gapPolicy = gapPolicy | ||
| return this | ||
| } | ||
|
|
||
| override fun createInternal(metaData: Map<String, Any>?): PipelineAggregator { | ||
| return BucketSelectorExtAggregator(name, bucketsPathsMap, parentBucketPath, script, gapPolicy, filter, metaData) | ||
| } | ||
|
|
||
| @Throws(IOException::class) | ||
| public override fun internalXContent(builder: XContentBuilder, params: Params): XContentBuilder { | ||
| builder.field(PipelineAggregator.Parser.BUCKETS_PATH.preferredName, bucketsPathsMap as Map<String, Any>?) | ||
| .field(PARENT_BUCKET_PATH.preferredName, parentBucketPath) | ||
| .field(Script.SCRIPT_PARSE_FIELD.preferredName, script) | ||
| .field(PipelineAggregator.Parser.GAP_POLICY.preferredName, gapPolicy.getName()) | ||
| if (filter != null) { | ||
| if (filter.isCompositeAggregation) { | ||
| builder.startObject(BUCKET_SELECTOR_COMPOSITE_AGG_FILTER.preferredName) | ||
| .value(filter) | ||
| .endObject() | ||
| } else { | ||
| builder.startObject(BUCKET_SELECTOR_FILTER.preferredName) | ||
| .value(filter) | ||
| .endObject() | ||
| } | ||
| } | ||
| return builder | ||
| } | ||
|
|
||
| override fun overrideBucketsPath(): Boolean { | ||
| return true | ||
| } | ||
|
|
||
| override fun validate(context: ValidationContext) { | ||
| // Nothing to check | ||
| } | ||
|
|
||
| override fun hashCode(): Int { | ||
| return Objects.hash(super.hashCode(), bucketsPathsMap, script, gapPolicy) | ||
| } | ||
|
|
||
| override fun equals(other: Any?): Boolean { | ||
| if (this === other) return true | ||
| if (other == null || javaClass != other.javaClass) return false | ||
| if (!super.equals(other)) return false | ||
| val otherCast = other as BucketSelectorExtAggregationBuilder | ||
| return (bucketsPathsMap == otherCast.bucketsPathsMap | ||
| && script == otherCast.script | ||
| && gapPolicy == otherCast.gapPolicy) | ||
| } | ||
|
|
||
| override fun getWriteableName(): String { | ||
| return NAME.preferredName | ||
| } | ||
|
|
||
| companion object { | ||
| val NAME = ParseField("bucket_selector_ext") | ||
| private val PARENT_BUCKET_PATH = ParseField("parent_bucket_path") | ||
|
|
||
| @Throws(IOException::class) | ||
| fun parse(reducerName: String, parser: XContentParser): BucketSelectorExtAggregationBuilder { | ||
|
There was a problem hiding this comment. To clean this up a bit and be more consistent with our other Ex. |
||
| var token: XContentParser.Token | ||
| var script: Script? = null | ||
| var currentFieldName: String? = null | ||
| var bucketsPathsMap: MutableMap<String, String>? = null | ||
| var gapPolicy: GapPolicy? = null | ||
| var parentBucketPath: String? = null | ||
| var filter: BucketSelectorExtFilter? = null | ||
| while (parser.nextToken().also { token = it } !== XContentParser.Token.END_OBJECT) { | ||
| if (token === XContentParser.Token.FIELD_NAME) { | ||
| currentFieldName = parser.currentName() | ||
| } else if (token === XContentParser.Token.VALUE_STRING) { | ||
| when { | ||
| PipelineAggregator.Parser.BUCKETS_PATH.match(currentFieldName, parser.deprecationHandler) -> { | ||
| bucketsPathsMap = HashMap() | ||
| bucketsPathsMap["_value"] = parser.text() | ||
| } | ||
| PipelineAggregator.Parser.GAP_POLICY.match(currentFieldName, parser.deprecationHandler) -> { | ||
| gapPolicy = GapPolicy.parse(parser.text(), parser.tokenLocation) | ||
| } | ||
| Script.SCRIPT_PARSE_FIELD.match(currentFieldName, parser.deprecationHandler) -> { | ||
| script = Script.parse(parser) | ||
| } | ||
| PARENT_BUCKET_PATH.match(currentFieldName, parser.deprecationHandler) -> { | ||
| parentBucketPath = parser.text() | ||
| } | ||
| else -> { | ||
| throw ParsingException( | ||
| parser.tokenLocation, | ||
| "Unknown key for a $token in [$reducerName]: [$currentFieldName]." | ||
| ) | ||
| } | ||
| } | ||
| } else if (token === XContentParser.Token.START_ARRAY) { | ||
| if (PipelineAggregator.Parser.BUCKETS_PATH.match(currentFieldName, parser.deprecationHandler)) { | ||
| val paths: MutableList<String> = ArrayList() | ||
| while (parser.nextToken().also { token = it } !== XContentParser.Token.END_ARRAY) { | ||
| val path = parser.text() | ||
| paths.add(path) | ||
| } | ||
| bucketsPathsMap = HashMap() | ||
| for (i in paths.indices) { | ||
| bucketsPathsMap["_value$i"] = paths[i] | ||
| } | ||
| } else { | ||
| throw ParsingException( | ||
| parser.tokenLocation, | ||
| "Unknown key for a $token in [$reducerName]: [$currentFieldName]." | ||
| ) | ||
| } | ||
| } else if (token === XContentParser.Token.START_OBJECT) { | ||
| when { | ||
| Script.SCRIPT_PARSE_FIELD.match(currentFieldName, parser.deprecationHandler) -> { | ||
| script = Script.parse(parser) | ||
| } | ||
| PipelineAggregator.Parser.BUCKETS_PATH.match(currentFieldName, parser.deprecationHandler) -> { | ||
| val map = parser.map() | ||
| bucketsPathsMap = HashMap() | ||
| for ((key, value) in map) { | ||
| bucketsPathsMap[key] = value.toString() | ||
| } | ||
| } | ||
| BUCKET_SELECTOR_FILTER.match(currentFieldName, parser.deprecationHandler) -> { | ||
| filter = BucketSelectorExtFilter.parse(reducerName, false, parser) | ||
| } | ||
| BUCKET_SELECTOR_COMPOSITE_AGG_FILTER.match( | ||
| currentFieldName, | ||
| parser.deprecationHandler | ||
| ) -> { | ||
| filter = BucketSelectorExtFilter.parse(reducerName, true, parser) | ||
| } | ||
| else -> { | ||
| throw ParsingException( | ||
| parser.tokenLocation, | ||
| "Unknown key for a $token in [$reducerName]: [$currentFieldName]." | ||
| ) | ||
| } | ||
| } | ||
| } else { | ||
| throw ParsingException(parser.tokenLocation, "Unexpected token $token in [$reducerName].") | ||
| } | ||
| } | ||
| if (bucketsPathsMap == null) { | ||
| throw ParsingException( | ||
| parser.tokenLocation, "Missing required field [" + PipelineAggregator.Parser.BUCKETS_PATH.preferredName | ||
| + "] for bucket_selector aggregation [" + reducerName + "]" | ||
| ) | ||
| } | ||
| if (script == null) { | ||
| throw ParsingException( | ||
| parser.tokenLocation, "Missing required field [" + Script.SCRIPT_PARSE_FIELD.preferredName | ||
| + "] for bucket_selector aggregation [" + reducerName + "]" | ||
| ) | ||
| } | ||
|
|
||
| if (parentBucketPath == null) { | ||
| throw ParsingException( | ||
| parser.tokenLocation, "Missing required field [" + PARENT_BUCKET_PATH | ||
| + "] for bucket_selector aggregation [" + reducerName + "]" | ||
| ) | ||
| } | ||
| val factory = BucketSelectorExtAggregationBuilder(reducerName, bucketsPathsMap, script, parentBucketPath, filter) | ||
| if (gapPolicy != null) { | ||
| factory.gapPolicy(gapPolicy) | ||
| } | ||
| return factory | ||
| } | ||
| } | ||
|
|
||
| } | ||
Oops, something went wrong.
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
There was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
NP: Builder calls can be chained to reduce text.
Ex.