-
Notifications
You must be signed in to change notification settings - Fork 3
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
10 changed files
with
363 additions
and
22 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
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,6 @@ | ||
| package(default_visibility = ["//visibility:public"]) | ||
|
|
||
| alias( | ||
| name = "sdk", | ||
| actual = "@maven//:io_opentelemetry_opentelemetry_sdk", | ||
| ) |
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 +1,6 @@ | ||
| package(default_visibility = ["//visibility:public"]) | ||
|
|
||
| alias( | ||
| name = "testing", | ||
| actual = "@maven//:io_opentelemetry_opentelemetry_sdk_testing", | ||
| ) |
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
118 changes: 118 additions & 0 deletions
118
src/main/kotlin/org/wfanet/measurement/common/Instrumentation.kt
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 +1,118 @@ | ||
| /* | ||
| * Copyright 2024 The Cross-Media Measurement Authors | ||
| * | ||
| * Licensed 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 org.wfanet.measurement.common | ||
|
|
||
| import io.opentelemetry.api.GlobalOpenTelemetry | ||
| import io.opentelemetry.api.OpenTelemetry | ||
| import io.opentelemetry.api.common.AttributeKey | ||
| import io.opentelemetry.api.common.Attributes | ||
| import io.opentelemetry.api.metrics.Meter | ||
| import java.util.concurrent.ConcurrentHashMap | ||
| import java.util.concurrent.ExecutorService | ||
| import java.util.concurrent.ThreadPoolExecutor | ||
|
|
||
| /** Common instrumentation for an application. */ | ||
| object Instrumentation { | ||
| /** Root namespace. */ | ||
| const val ROOT_NAMESPACE = "halo_cmm" | ||
|
|
||
| /** Singleton [OpenTelemetry] instance which may be initialized by the Java agent. */ | ||
| val openTelemetry: OpenTelemetry by lazy { | ||
| // Using lazy delegate to avoid accessing global instance before it's initialized. | ||
| GlobalOpenTelemetry.get() | ||
| } | ||
|
|
||
| /** Common [Meter]. */ | ||
| val meter: Meter by lazy { openTelemetry.getMeter(this::class.java.name) } | ||
|
|
||
| /** Instrumentation for thread pools. */ | ||
| private val threadPools: ThreadPools by lazy { ThreadPools() } | ||
|
|
||
| /** | ||
| * Instruments the specified thread pool. | ||
| * | ||
| * @return the instrumented thread pool executor service | ||
| */ | ||
| fun instrumentThreadPool(poolName: String, threadPool: ThreadPoolExecutor): ExecutorService { | ||
| return threadPools.instrument(poolName, threadPool) | ||
| } | ||
|
|
||
| private class ThreadPools { | ||
| private val threadPoolsByName = ConcurrentHashMap<String, ThreadPoolExecutor>() | ||
|
|
||
| private val sizeCounter = | ||
| meter | ||
| .upDownCounterBuilder("$NAMESPACE.size") | ||
| .setDescription("Current number of threads") | ||
| .buildObserver() | ||
| private val activeCounter = | ||
| meter | ||
| .upDownCounterBuilder("$NAMESPACE.active_count") | ||
| .setDescription("Approximate number of threads that are actively executing tasks") | ||
| .buildObserver() | ||
|
|
||
| init { | ||
| meter.batchCallback(::record, sizeCounter, activeCounter) | ||
| } | ||
|
|
||
| /** Registers the specified thread pool for instrumentation. */ | ||
| fun instrument(poolName: String, threadPool: ThreadPoolExecutor): ExecutorService { | ||
| val previousRegistration = threadPoolsByName.putIfAbsent(poolName, threadPool) | ||
| check(previousRegistration == null) { "Thread pool $poolName already instrumented" } | ||
| return InstrumentedExecutorService(poolName, threadPool) | ||
| } | ||
|
|
||
| private fun record() { | ||
| for ((poolName, threadPool) in threadPoolsByName) { | ||
| val attributes: Attributes = Attributes.of(THREAD_POOL_NAME_ATTRIBUTE_KEY, poolName) | ||
| sizeCounter.record(threadPool.poolSize.toLong(), attributes) | ||
| activeCounter.record(threadPool.activeCount.toLong(), attributes) | ||
| } | ||
| } | ||
|
|
||
| /** Instrumented [ExecutorService] */ | ||
| private inner class InstrumentedExecutorService( | ||
| private val poolName: String, | ||
| private val delegate: ExecutorService, | ||
| ) : ExecutorService by delegate { | ||
| override fun shutdown() { | ||
| threadPoolsByName.remove(poolName) | ||
| delegate.shutdown() | ||
| } | ||
|
|
||
| override fun shutdownNow(): MutableList<Runnable> { | ||
| threadPoolsByName.remove(poolName) | ||
| return delegate.shutdownNow() | ||
| } | ||
| } | ||
|
|
||
| companion object { | ||
| private const val NAMESPACE = "$ROOT_NAMESPACE.thread_pool" | ||
| /** Attribute key for thread pool name. */ | ||
| private val THREAD_POOL_NAME_ATTRIBUTE_KEY: AttributeKey<String> = | ||
| AttributeKey.stringKey("$NAMESPACE.name") | ||
| } | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * Instruments the [ThreadPoolExecutor]. | ||
| * | ||
| * @return the instrumented [ExecutorService] | ||
| */ | ||
| fun ThreadPoolExecutor.instrumented(poolName: String): ExecutorService = | ||
| Instrumentation.instrumentThreadPool(poolName, this) |
Oops, something went wrong.