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[Backport 2.x] [Search Pipelines] Add stats for search pipelines (#8376)
backport commit 46c9a21 to `2.x` branch. * [Search Pipelines] Add stats for search pipelines (#8053) This adds statistics on executions and time spent on search pipeline operations, similar to the stats that are available for ingest pipelines. Signed-off-by: Mingshi Liu <[email protected]> Co-authored-by: Michael Froh <[email protected]>
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68 changes: 68 additions & 0 deletions
68
server/src/main/java/org/opensearch/common/metrics/OperationMetrics.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,68 @@ | ||
| /* | ||
| * SPDX-License-Identifier: Apache-2.0 | ||
| * | ||
| * The OpenSearch Contributors require contributions made to | ||
| * this file be licensed under the Apache-2.0 license or a | ||
| * compatible open source license. | ||
| */ | ||
|
|
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| package org.opensearch.common.metrics; | ||
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| import java.util.concurrent.atomic.AtomicLong; | ||
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| /** | ||
| * Mutable tracker of a repeated operation. | ||
| * | ||
| * @opensearch.internal | ||
| */ | ||
| public class OperationMetrics { | ||
| /** | ||
| * The mean time it takes to complete the measured item. | ||
| */ | ||
| private final MeanMetric time = new MeanMetric(); | ||
| /** | ||
| * The current count of things being measured. | ||
| * Useful when aggregating multiple metrics to see how many things are in flight. | ||
| */ | ||
| private final AtomicLong current = new AtomicLong(); | ||
| /** | ||
| * The non-decreasing count of failures | ||
| */ | ||
| private final CounterMetric failed = new CounterMetric(); | ||
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| /** | ||
| * Invoked before the given operation begins. | ||
| */ | ||
| public void before() { | ||
| current.incrementAndGet(); | ||
| } | ||
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| /** | ||
| * Invoked upon completion (success or failure) of the given operation | ||
| * @param currentTime elapsed time of the operation | ||
| */ | ||
| public void after(long currentTime) { | ||
| current.decrementAndGet(); | ||
| time.inc(currentTime); | ||
| } | ||
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| /** | ||
| * Invoked upon failure of the operation. | ||
| */ | ||
| public void failed() { | ||
| failed.inc(); | ||
| } | ||
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| public void add(OperationMetrics other) { | ||
| // Don't try copying over current, since in-flight requests will be linked to the existing metrics instance. | ||
| failed.inc(other.failed.count()); | ||
| time.add(other.time); | ||
| } | ||
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| /** | ||
| * @return an immutable snapshot of the current metric values. | ||
| */ | ||
| public OperationStats createStats() { | ||
| return new OperationStats(time.count(), time.sum(), current.get(), failed.count()); | ||
| } | ||
| } |
107 changes: 107 additions & 0 deletions
107
server/src/main/java/org/opensearch/common/metrics/OperationStats.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,107 @@ | ||
| /* | ||
| * SPDX-License-Identifier: Apache-2.0 | ||
| * | ||
| * The OpenSearch Contributors require contributions made to | ||
| * this file be licensed under the Apache-2.0 license or a | ||
| * compatible open source license. | ||
| */ | ||
|
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| package org.opensearch.common.metrics; | ||
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| import org.opensearch.common.io.stream.StreamInput; | ||
| import org.opensearch.common.io.stream.StreamOutput; | ||
| import org.opensearch.common.io.stream.Writeable; | ||
| import org.opensearch.common.unit.TimeValue; | ||
| import org.opensearch.core.xcontent.ToXContentFragment; | ||
| import org.opensearch.core.xcontent.XContentBuilder; | ||
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| import java.io.IOException; | ||
| import java.util.Objects; | ||
| import java.util.concurrent.TimeUnit; | ||
|
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| /** | ||
| * An immutable representation of a {@link OperationMetrics} | ||
| */ | ||
| public class OperationStats implements Writeable, ToXContentFragment { | ||
| private final long count; | ||
| private final long totalTimeInMillis; | ||
| private final long current; | ||
| private final long failedCount; | ||
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| public OperationStats(long count, long totalTimeInMillis, long current, long failedCount) { | ||
| this.count = count; | ||
| this.totalTimeInMillis = totalTimeInMillis; | ||
| this.current = current; | ||
| this.failedCount = failedCount; | ||
| } | ||
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| /** | ||
| * Read from a stream. | ||
| */ | ||
| public OperationStats(StreamInput in) throws IOException { | ||
| count = in.readVLong(); | ||
| totalTimeInMillis = in.readVLong(); | ||
| current = in.readVLong(); | ||
| failedCount = in.readVLong(); | ||
| } | ||
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| @Override | ||
| public void writeTo(StreamOutput out) throws IOException { | ||
| out.writeVLong(count); | ||
| out.writeVLong(totalTimeInMillis); | ||
| out.writeVLong(current); | ||
| out.writeVLong(failedCount); | ||
| } | ||
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| /** | ||
| * @return The total number of executed operations. | ||
| */ | ||
| public long getCount() { | ||
| return count; | ||
| } | ||
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| /** | ||
| * @return The total time spent of in millis. | ||
| */ | ||
| public long getTotalTimeInMillis() { | ||
| return totalTimeInMillis; | ||
| } | ||
|
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| /** | ||
| * @return The total number of operations currently executing. | ||
| */ | ||
| public long getCurrent() { | ||
| return current; | ||
| } | ||
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| /** | ||
| * @return The total number of operations that have failed. | ||
| */ | ||
| public long getFailedCount() { | ||
| return failedCount; | ||
| } | ||
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| @Override | ||
| public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException { | ||
| return builder.field("count", count) | ||
| .humanReadableField("time_in_millis", "time", new TimeValue(totalTimeInMillis, TimeUnit.MILLISECONDS)) | ||
| .field("current", current) | ||
| .field("failed", failedCount); | ||
| } | ||
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| @Override | ||
| public boolean equals(Object o) { | ||
| if (this == o) return true; | ||
| if (o == null || getClass() != o.getClass()) return false; | ||
| OperationStats that = (OperationStats) o; | ||
| return Objects.equals(count, that.count) | ||
| && Objects.equals(totalTimeInMillis, that.totalTimeInMillis) | ||
| && Objects.equals(failedCount, that.failedCount) | ||
| && Objects.equals(current, that.current); | ||
| } | ||
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| @Override | ||
| public int hashCode() { | ||
| return Objects.hash(count, totalTimeInMillis, failedCount, current); | ||
| } | ||
| } |
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