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// Copyright 2014 Google Inc. 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.common.collect.ImmutableList.Builder;
import com.google.devtools.build.lib.actions.ActionContextProvider;
import com.google.devtools.build.lib.actions.ActionExecutionContext;
import com.google.devtools.build.lib.actions.ActionMetadata;
import com.google.devtools.build.lib.actions.Artifact;
import com.google.devtools.build.lib.actions.ArtifactResolver;
import com.google.devtools.build.lib.actions.ExecutionStrategy;
import com.google.devtools.build.lib.actions.Executor.ActionContext;
import com.google.devtools.build.lib.buildtool.BuildRequest;
import com.google.devtools.build.lib.exec.ExecutionOptions;
import com.google.devtools.build.lib.exec.FileWriteStrategy;
import com.google.devtools.build.lib.rules.cpp.IncludeScanningContext;
import com.google.devtools.build.lib.rules.cpp.LocalGccStrategy;
import com.google.devtools.build.lib.rules.cpp.LocalLinkStrategy;
import com.google.devtools.build.lib.rules.test.ExclusiveTestStrategy;
import com.google.devtools.build.lib.rules.test.StandaloneTestStrategy;
import com.google.devtools.build.lib.rules.test.TestActionContext;
import com.google.devtools.build.lib.runtime.BlazeRuntime;
import com.google.devtools.build.lib.runtime.CommandEnvironment;
import com.google.devtools.build.lib.vfs.FileSystemUtils;
import java.io.IOException;
/**
* Provide a standalone, local execution context.
*/
public class StandaloneActionContextProvider extends ActionContextProvider {
/**
* a IncludeScanningContext that does nothing. Since local execution does not need to
* discover inclusion in advance, we do not need include scanning.
*/
@ExecutionStrategy(contextType = IncludeScanningContext.class)
class DummyIncludeScanningContext implements IncludeScanningContext {
@Override
public void extractIncludes(ActionExecutionContext actionExecutionContext,
ActionMetadata resourceOwner, Artifact primaryInput, Artifact primaryOutput)
throws IOException, InterruptedException {
FileSystemUtils.writeContent(primaryOutput.getPath(), new byte[]{});
}
@Override
public ArtifactResolver getArtifactResolver() {
return env.getView().getArtifactFactory();
}
}
private final CommandEnvironment env;
private final ImmutableList<ActionContext> strategies;
public StandaloneActionContextProvider(CommandEnvironment env, BuildRequest buildRequest) {
this.env = env;
BlazeRuntime runtime = env.getRuntime();
boolean verboseFailures = buildRequest.getOptions(ExecutionOptions.class).verboseFailures;
TestActionContext testStrategy = new StandaloneTestStrategy(buildRequest,
runtime.getStartupOptionsProvider(), runtime.getBinTools(), env.getClientEnv(),
runtime.getWorkspace());
Builder<ActionContext> strategiesBuilder = ImmutableList.builder();
// 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
strategiesBuilder.add(
new StandaloneSpawnStrategy(runtime.getExecRoot(), verboseFailures),
new DummyIncludeScanningContext(),
new LocalLinkStrategy(),
testStrategy,
new ExclusiveTestStrategy(testStrategy),
new LocalGccStrategy(),
new FileWriteStrategy());
this.strategies = strategiesBuilder.build();
}
@Override
public Iterable<ActionContext> getActionContexts() {
return strategies;
}
}
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