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// Copyright 2015 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.base.Preconditions;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import com.google.common.hash.HashCode;
import com.google.devtools.build.lib.actions.Spawns;
import com.google.devtools.build.lib.vfs.Path;
import com.google.devtools.build.lib.vfs.PathFragment;
import java.util.List;
import java.util.Map;
import java.util.SortedMap;
/**
* Data container that uniquely identifies a kind of worker process and is used as the key for the
* {@link WorkerPool}.
*/
final class WorkerKey {
private final ImmutableList<String> args;
private final ImmutableMap<String, String> env;
private final Path execRoot;
private final String mnemonic;
/**
* These are used during validation whether a worker is still usable. They are not used to
* uniquely identify a kind of worker, thus it is not to be used by the .equals() / .hashCode()
* methods.
*/
private final HashCode workerFilesCombinedHash;
private final SortedMap<PathFragment, HashCode> workerFilesWithHashes;
private final boolean mustBeSandboxed;
WorkerKey(
List<String> args,
Map<String, String> env,
Path execRoot,
String mnemonic,
HashCode workerFilesCombinedHash,
SortedMap<PathFragment, HashCode> workerFilesWithHashes,
boolean mustBeSandboxed) {
this.args = ImmutableList.copyOf(Preconditions.checkNotNull(args));
this.env = ImmutableMap.copyOf(Preconditions.checkNotNull(env));
this.execRoot = Preconditions.checkNotNull(execRoot);
this.mnemonic = Preconditions.checkNotNull(mnemonic);
this.workerFilesCombinedHash = Preconditions.checkNotNull(workerFilesCombinedHash);
this.workerFilesWithHashes = Preconditions.checkNotNull(workerFilesWithHashes);
this.mustBeSandboxed = mustBeSandboxed;
}
public ImmutableList<String> getArgs() {
return args;
}
public ImmutableMap<String, String> getEnv() {
return env;
}
public Path getExecRoot() {
return execRoot;
}
public String getMnemonic() {
return mnemonic;
}
public HashCode getWorkerFilesCombinedHash() {
return workerFilesCombinedHash;
}
public SortedMap<PathFragment, HashCode> getWorkerFilesWithHashes() {
return workerFilesWithHashes;
}
public boolean mustBeSandboxed() {
return mustBeSandboxed;
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
WorkerKey workerKey = (WorkerKey) o;
if (!args.equals(workerKey.args)) {
return false;
}
if (!env.equals(workerKey.env)) {
return false;
}
if (!execRoot.equals(workerKey.execRoot)) {
return false;
}
return mnemonic.equals(workerKey.mnemonic);
}
@Override
public int hashCode() {
int result = args.hashCode();
result = 31 * result + env.hashCode();
result = 31 * result + execRoot.hashCode();
result = 31 * result + mnemonic.hashCode();
return result;
}
@Override
public String toString() {
return Spawns.asShellCommand(args, execRoot, env, /* prettyPrintArgs= */ false);
}
}
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