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// Copyright 2016 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.remote;
import static com.google.common.base.Preconditions.checkNotNull;
import com.google.common.base.Preconditions;
import com.google.common.collect.ImmutableList;
import com.google.devtools.build.lib.actions.ActionContext;
import com.google.devtools.build.lib.actions.ExecutionStrategy;
import com.google.devtools.build.lib.actions.ExecutorInitException;
import com.google.devtools.build.lib.exec.AbstractSpawnStrategy;
import com.google.devtools.build.lib.exec.ActionContextProvider;
import com.google.devtools.build.lib.exec.ExecutionOptions;
import com.google.devtools.build.lib.exec.SpawnRunner;
import com.google.devtools.build.lib.remote.util.DigestUtil;
import com.google.devtools.build.lib.runtime.CommandEnvironment;
import com.google.devtools.build.lib.util.ExitCode;
import com.google.devtools.build.lib.vfs.Path;
import java.util.Arrays;
import java.util.Collections;
import java.util.SortedSet;
import java.util.TreeSet;
import java.util.concurrent.atomic.AtomicReference;
import javax.annotation.Nullable;
/**
* Provide a remote execution context.
*/
final class RemoteActionContextProvider extends ActionContextProvider {
private final CommandEnvironment env;
@Nullable private final AbstractRemoteActionCache cache;
@Nullable private final GrpcRemoteExecutor executor;
private final RemoteRetrier retrier;
private final DigestUtil digestUtil;
private final Path logDir;
private final AtomicReference<SpawnRunner> fallbackRunner = new AtomicReference<>();
RemoteActionContextProvider(
CommandEnvironment env,
@Nullable AbstractRemoteActionCache cache,
@Nullable GrpcRemoteExecutor executor,
RemoteRetrier retrier,
DigestUtil digestUtil,
Path logDir) {
this.env = env;
this.executor = executor;
this.cache = cache;
this.retrier = retrier;
this.digestUtil = digestUtil;
this.logDir = logDir;
}
@Override
public Iterable<? extends ActionContext> getActionContexts() {
ExecutionOptions executionOptions =
checkNotNull(env.getOptions().getOptions(ExecutionOptions.class));
RemoteOptions remoteOptions = checkNotNull(env.getOptions().getOptions(RemoteOptions.class));
String buildRequestId = env.getBuildRequestId();
String commandId = env.getCommandId().toString();
if (executor == null && cache != null) {
RemoteSpawnCache spawnCache =
new RemoteSpawnCache(
env.getExecRoot(),
remoteOptions,
cache,
buildRequestId,
commandId,
env.getReporter(),
digestUtil);
return ImmutableList.of(spawnCache);
} else {
RemoteSpawnRunner spawnRunner =
new RemoteSpawnRunner(
env.getExecRoot(),
remoteOptions,
env.getOptions().getOptions(ExecutionOptions.class),
fallbackRunner,
executionOptions.verboseFailures,
env.getReporter(),
buildRequestId,
commandId,
cache,
executor,
retrier,
digestUtil,
logDir);
return ImmutableList.of(new RemoteSpawnStrategy(env.getExecRoot(), spawnRunner));
}
}
@Override
public void executorCreated(Iterable<ActionContext> usedContexts) throws ExecutorInitException {
SortedSet<String> validStrategies = new TreeSet<>();
fallbackRunner.set(null);
RemoteOptions remoteOptions = env.getOptions().getOptions(RemoteOptions.class);
String strategyName = remoteOptions.remoteLocalFallbackStrategy;
for (ActionContext context : usedContexts) {
if (context instanceof AbstractSpawnStrategy) {
ExecutionStrategy annotation = context.getClass().getAnnotation(ExecutionStrategy.class);
if (annotation != null) {
Collections.addAll(validStrategies, annotation.name());
if (!strategyName.equals("remote")
&& Arrays.asList(annotation.name()).contains(strategyName)) {
AbstractSpawnStrategy spawnStrategy = (AbstractSpawnStrategy) context;
SpawnRunner spawnRunner = Preconditions.checkNotNull(spawnStrategy.getSpawnRunner());
fallbackRunner.set(spawnRunner);
}
}
}
}
if (fallbackRunner.get() == null) {
validStrategies.remove("remote");
throw new ExecutorInitException(
String.format(
"'%s' is an invalid value for --remote_local_fallback_strategy. Valid values are: %s",
strategyName, validStrategies),
ExitCode.COMMAND_LINE_ERROR);
}
}
@Override
public void executionPhaseEnding() {
if (cache != null) {
cache.close();
}
if (executor != null) {
executor.close();
}
}
}
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