| // Copyright 2019 The Bazel Authors. 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. |
| // 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 com.google.devtools.build.lib.worker; |
| |
| import static com.google.common.truth.Truth.assertThat; |
| import static org.junit.Assert.assertThrows; |
| |
| import com.google.common.collect.ImmutableList; |
| import com.google.common.collect.ImmutableMap; |
| import com.google.common.collect.ImmutableSortedMap; |
| import com.google.common.hash.HashCode; |
| import com.google.devtools.build.lib.actions.ExecutionRequirements.WorkerProtocolFormat; |
| import com.google.devtools.build.lib.actions.UserExecException; |
| import com.google.devtools.build.lib.clock.BlazeClock; |
| import com.google.devtools.build.lib.vfs.DigestHashFunction; |
| import com.google.devtools.build.lib.vfs.FileSystem; |
| import com.google.devtools.build.lib.vfs.Path; |
| import com.google.devtools.build.lib.vfs.inmemoryfs.InMemoryFileSystem; |
| import org.junit.After; |
| import org.junit.Before; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| |
| /** Tests for {@link WorkerMultiplexerManager}. */ |
| @RunWith(JUnit4.class) |
| public class WorkerMultiplexerManagerTest { |
| |
| private FileSystem fileSystem; |
| |
| @Before |
| public void setUp() { |
| fileSystem = new InMemoryFileSystem(BlazeClock.instance(), DigestHashFunction.SHA256); |
| WorkerMultiplexerManager.resetForTesting(); |
| } |
| |
| @After |
| public void tearDown() { |
| WorkerMultiplexerManager.resetForTesting(); |
| } |
| |
| @Test |
| public void instanceCreationRemovalTest() throws Exception { |
| Path logFile = fileSystem.getPath("/tmp/logFilePath"); |
| // Create a WorkerProxy hash and request for a WorkerMultiplexer. |
| WorkerKey workerKey1 = |
| new WorkerKey( |
| ImmutableList.of(), |
| ImmutableMap.of(), |
| fileSystem.getPath("/execRoot"), |
| "mnemonic1", |
| HashCode.fromInt(1), |
| ImmutableSortedMap.of(), |
| false, |
| false, |
| /* cancellable= */ false, |
| WorkerProtocolFormat.PROTO); |
| WorkerMultiplexer wm1 = WorkerMultiplexerManager.getInstance(workerKey1, logFile); |
| |
| assertThat(WorkerMultiplexerManager.getMultiplexer(workerKey1)).isEqualTo(wm1); |
| assertThat(WorkerMultiplexerManager.getRefCount(workerKey1)).isEqualTo(1); |
| assertThat(WorkerMultiplexerManager.getInstanceCount()).isEqualTo(1); |
| |
| // Create another WorkerProxy hash and request for a WorkerMultiplexer. |
| WorkerKey workerKey2 = |
| new WorkerKey( |
| ImmutableList.of(), |
| ImmutableMap.of(), |
| fileSystem.getPath("/execRoot"), |
| "mnemonic2", |
| HashCode.fromInt(1), |
| ImmutableSortedMap.of(), |
| false, |
| false, |
| /* cancellable= */ false, |
| WorkerProtocolFormat.PROTO); |
| WorkerMultiplexer wm2 = WorkerMultiplexerManager.getInstance(workerKey2, logFile); |
| |
| assertThat(WorkerMultiplexerManager.getMultiplexer(workerKey2)).isEqualTo(wm2); |
| assertThat(WorkerMultiplexerManager.getRefCount(workerKey2)).isEqualTo(1); |
| assertThat(WorkerMultiplexerManager.getInstanceCount()).isEqualTo(2); |
| |
| // Use the same WorkerProxy hash, it shouldn't instantiate a new WorkerMultiplexer. |
| WorkerMultiplexer wm2Annex = WorkerMultiplexerManager.getInstance(workerKey2, logFile); |
| |
| assertThat(wm2).isEqualTo(wm2Annex); |
| assertThat(WorkerMultiplexerManager.getRefCount(workerKey2)).isEqualTo(2); |
| assertThat(WorkerMultiplexerManager.getInstanceCount()).isEqualTo(2); |
| |
| // Remove an instance. If reference count is larger than 0, instance shouldn't be destroyed. |
| WorkerMultiplexerManager.removeInstance(workerKey2); |
| |
| assertThat(WorkerMultiplexerManager.getRefCount(workerKey2)).isEqualTo(1); |
| assertThat(WorkerMultiplexerManager.getInstanceCount()).isEqualTo(2); |
| |
| // Remove an instance. Reference count is down to 0, instance should be destroyed. |
| WorkerMultiplexerManager.removeInstance(workerKey2); |
| |
| assertThrows( |
| UserExecException.class, () -> WorkerMultiplexerManager.getMultiplexer(workerKey2)); |
| assertThat(WorkerMultiplexerManager.getInstanceCount()).isEqualTo(1); |
| |
| // WorkerProxy hash not found. |
| assertThrows( |
| UserExecException.class, () -> WorkerMultiplexerManager.removeInstance(workerKey2)); |
| |
| // Remove all the instances. |
| WorkerMultiplexerManager.removeInstance(workerKey1); |
| |
| assertThat(WorkerMultiplexerManager.getInstanceCount()).isEqualTo(0); |
| } |
| } |