| // Copyright 2020 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 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.shell.Subprocess; |
| import com.google.devtools.build.lib.vfs.FileSystem; |
| import com.google.devtools.build.lib.vfs.Path; |
| import java.io.ByteArrayInputStream; |
| import java.io.ByteArrayOutputStream; |
| import java.io.Closeable; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| |
| /** Utilities that come in handy when unit-testing the worker code. */ |
| class TestUtils { |
| |
| private TestUtils() {} |
| |
| static WorkerKey createWorkerKey( |
| FileSystem fileSystem, String mnemonic, boolean proxied, String... args) { |
| return new WorkerKey( |
| /* args= */ ImmutableList.copyOf(args), |
| /* env= */ ImmutableMap.of("env1", "foo", "env2", "bar"), |
| /* execRoot= */ fileSystem.getPath("/fake"), |
| /* mnemonic= */ mnemonic, |
| /* workerFilesCombinedHash= */ HashCode.fromInt(0), |
| /* workerFilesWithHashes= */ ImmutableSortedMap.of(), |
| /* mustBeSandboxed= */ false, |
| /* proxied= */ proxied, |
| /* cancellable= */ false, |
| WorkerProtocolFormat.PROTO); |
| } |
| |
| static WorkerKey createWorkerKey(WorkerProtocolFormat protocolFormat, FileSystem fs) { |
| return new WorkerKey( |
| /* args= */ ImmutableList.of("arg1", "arg2", "arg3"), |
| /* env= */ ImmutableMap.of("env1", "foo", "env2", "bar"), |
| /* execRoot= */ fs.getPath("/outputbase/execroot/workspace"), |
| /* mnemonic= */ "dummy", |
| /* workerFilesCombinedHash= */ HashCode.fromInt(0), |
| /* workerFilesWithHashes= */ ImmutableSortedMap.of(), |
| /* mustBeSandboxed= */ true, |
| /* proxied= */ true, |
| /* cancellable= */ false, |
| protocolFormat); |
| } |
| |
| /** A worker that uses a fake subprocess for I/O. */ |
| static class TestWorker extends SingleplexWorker { |
| private final FakeSubprocess fakeSubprocess; |
| |
| TestWorker( |
| WorkerKey workerKey, |
| int workerId, |
| final Path workDir, |
| Path logFile, |
| FakeSubprocess fakeSubprocess) { |
| super(workerKey, workerId, workDir, logFile); |
| this.fakeSubprocess = fakeSubprocess; |
| } |
| |
| @Override |
| Subprocess createProcess() { |
| return fakeSubprocess; |
| } |
| |
| FakeSubprocess getFakeSubprocess() { |
| return fakeSubprocess; |
| } |
| } |
| |
| /** |
| * The {@link Worker} object uses a {@link Subprocess} to interact with persistent worker |
| * binaries. Since this test is strictly testing {@link Worker} and not any outside persistent |
| * worker binaries, a {@link FakeSubprocess} instance is used to fake the {@link InputStream} and |
| * {@link OutputStream} that normally write and read from a persistent worker. |
| */ |
| static class FakeSubprocess implements Subprocess { |
| private final InputStream inputStream; |
| private final ByteArrayOutputStream outputStream = new ByteArrayOutputStream(); |
| private final ByteArrayInputStream errStream = new ByteArrayInputStream(new byte[0]); |
| private boolean wasDestroyed = false; |
| |
| /** Creates a fake Subprocess that writes {@code bytes} to its "stdout". */ |
| FakeSubprocess(byte[] bytes) throws IOException { |
| inputStream = new ByteArrayInputStream(bytes); |
| } |
| |
| FakeSubprocess(InputStream responseStream) throws IOException { |
| this.inputStream = responseStream; |
| } |
| |
| @Override |
| public InputStream getInputStream() { |
| return inputStream; |
| } |
| |
| @Override |
| public OutputStream getOutputStream() { |
| return outputStream; |
| } |
| |
| @Override |
| public InputStream getErrorStream() { |
| return errStream; |
| } |
| |
| @Override |
| public boolean destroy() { |
| for (Closeable stream : new Closeable[] {inputStream, outputStream, errStream}) { |
| try { |
| stream.close(); |
| } catch (IOException e) { |
| throw new IllegalStateException(e); |
| } |
| } |
| |
| wasDestroyed = true; |
| return true; |
| } |
| |
| @Override |
| public int exitValue() { |
| return 0; |
| } |
| |
| @Override |
| public boolean finished() { |
| return true; |
| } |
| |
| @Override |
| public boolean timedout() { |
| return false; |
| } |
| |
| @Override |
| public void waitFor() throws InterruptedException { |
| // Do nothing. |
| } |
| |
| @Override |
| public void close() { |
| // Do nothing. |
| } |
| |
| @Override |
| public boolean isAlive() { |
| return !wasDestroyed; |
| } |
| } |
| } |