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// Copyright 2014 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.standalone;
import com.google.common.collect.ImmutableList;
import com.google.devtools.build.lib.actions.Action;
import com.google.devtools.build.lib.actions.ActionContext;
import com.google.devtools.build.lib.actions.ActionExecutionContext;
import com.google.devtools.build.lib.actions.ActionExecutionException;
import com.google.devtools.build.lib.actions.Artifact;
import com.google.devtools.build.lib.actions.ArtifactResolver;
import com.google.devtools.build.lib.actions.ExecException;
import com.google.devtools.build.lib.actions.ExecutionStrategy;
import com.google.devtools.build.lib.actions.ResourceManager;
import com.google.devtools.build.lib.analysis.test.TestActionContext;
import com.google.devtools.build.lib.exec.ActionContextProvider;
import com.google.devtools.build.lib.exec.ExecutionOptions;
import com.google.devtools.build.lib.exec.FileWriteStrategy;
import com.google.devtools.build.lib.exec.SpawnRunner;
import com.google.devtools.build.lib.exec.StandaloneTestStrategy;
import com.google.devtools.build.lib.exec.TestStrategy;
import com.google.devtools.build.lib.exec.apple.XCodeLocalEnvProvider;
import com.google.devtools.build.lib.exec.local.LocalEnvProvider;
import com.google.devtools.build.lib.exec.local.LocalExecutionOptions;
import com.google.devtools.build.lib.exec.local.LocalSpawnRunner;
import com.google.devtools.build.lib.exec.local.PosixLocalEnvProvider;
import com.google.devtools.build.lib.exec.local.WindowsLocalEnvProvider;
import com.google.devtools.build.lib.rules.cpp.CppCompileAction;
import com.google.devtools.build.lib.rules.cpp.CppIncludeExtractionContext;
import com.google.devtools.build.lib.rules.cpp.CppIncludeScanningContext;
import com.google.devtools.build.lib.rules.cpp.IncludeProcessing;
import com.google.devtools.build.lib.rules.cpp.SpawnGccStrategy;
import com.google.devtools.build.lib.rules.test.ExclusiveTestStrategy;
import com.google.devtools.build.lib.runtime.CommandEnvironment;
import com.google.devtools.build.lib.util.OS;
import com.google.devtools.build.lib.vfs.FileSystemUtils;
import com.google.devtools.build.lib.vfs.Path;
import java.io.IOException;
import javax.annotation.Nullable;
/**
* Provide a standalone, local execution context.
*/
public class StandaloneActionContextProvider extends ActionContextProvider {
/**
* An IncludeExtractionContext that does nothing. Since local execution does not need to discover
* inclusion in advance, we do not need include scanning.
*/
@ExecutionStrategy(contextType = CppIncludeExtractionContext.class)
class DummyCppIncludeExtractionContext implements CppIncludeExtractionContext {
@Override
public void extractIncludes(
ActionExecutionContext actionExecutionContext,
Action resourceOwner,
Artifact primaryInput,
Artifact primaryOutput)
throws IOException {
FileSystemUtils.writeContent(primaryOutput.getPath(), new byte[]{});
}
@Override
public ArtifactResolver getArtifactResolver() {
return env.getSkyframeBuildView().getArtifactFactory();
}
}
/**
* An IncludeScanningContext that does nothing. Since local execution does not need to discover
* inclusion in advance, we do not need include scanning.
*/
@ExecutionStrategy(contextType = CppIncludeScanningContext.class)
static class DummyCppIncludeScanningContext implements CppIncludeScanningContext {
@Override
@Nullable
public Iterable<Artifact> findAdditionalInputs(
CppCompileAction action,
ActionExecutionContext actionExecutionContext,
IncludeProcessing includeProcessing)
throws ExecException, InterruptedException, ActionExecutionException {
return null;
}
}
private final CommandEnvironment env;
public StandaloneActionContextProvider(CommandEnvironment env) {
this.env = env;
}
@Override
public Iterable<? extends ActionContext> getActionContexts() {
ExecutionOptions executionOptions = env.getOptions().getOptions(ExecutionOptions.class);
Path testTmpRoot =
TestStrategy.getTmpRoot(env.getWorkspace(), env.getExecRoot(), executionOptions);
TestActionContext testStrategy =
new StandaloneTestStrategy(
executionOptions,
env.getBlazeWorkspace().getBinTools(),
testTmpRoot);
// Order of strategies passed to builder is significant - when there are many strategies that
// could potentially be used and a spawnActionContext doesn't specify which one it wants, the
// last one from strategies list will be used
return ImmutableList.of(
new StandaloneSpawnStrategy(env.getExecRoot(), createLocalRunner(env)),
new DummyCppIncludeExtractionContext(),
new DummyCppIncludeScanningContext(),
new SpawnGccStrategy(),
testStrategy,
new ExclusiveTestStrategy(testStrategy),
new FileWriteStrategy());
}
private static SpawnRunner createLocalRunner(CommandEnvironment env) {
LocalExecutionOptions localExecutionOptions =
env.getOptions().getOptions(LocalExecutionOptions.class);
LocalEnvProvider localEnvProvider =
OS.getCurrent() == OS.DARWIN
? new XCodeLocalEnvProvider(env.getClientEnv())
: (OS.getCurrent() == OS.WINDOWS
? new WindowsLocalEnvProvider(env.getClientEnv())
: new PosixLocalEnvProvider(env.getClientEnv()));
return
new LocalSpawnRunner(
env.getExecRoot(),
localExecutionOptions,
ResourceManager.instance(),
env.getRuntime().getProductName(),
localEnvProvider);
}
}
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