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// Copyright 2018 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.query2;
import static java.util.stream.Collectors.joining;
import com.google.common.annotations.VisibleForTesting;
import com.google.common.collect.Streams;
import com.google.devtools.build.lib.analysis.ConfiguredTarget;
import com.google.devtools.build.lib.events.Reporter;
import com.google.devtools.build.lib.query2.engine.ThreadSafeOutputFormatterCallback;
import com.google.devtools.build.lib.query2.output.CqueryOptions;
import com.google.devtools.build.lib.skyframe.SkyframeExecutor;
import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintStream;
import java.util.ArrayList;
import java.util.List;
/**
* Parents class for cquery output callbacks. Handles names and outputting contents of result list
* that is populated by child classes.
*/
public abstract class CqueryThreadsafeCallback
extends ThreadSafeOutputFormatterCallback<ConfiguredTarget> {
protected final Reporter reporter;
protected final CqueryOptions options;
protected PrintStream printStream = null;
protected final SkyframeExecutor skyframeExecutor;
private final List<String> result = new ArrayList<>();
CqueryThreadsafeCallback(
Reporter reporter,
CqueryOptions options,
OutputStream out,
SkyframeExecutor skyframeExecutor) {
this.reporter = reporter;
this.options = options;
if (out != null) {
this.printStream = new PrintStream(out);
}
this.skyframeExecutor = skyframeExecutor;
}
public abstract String getName();
public static String callbackNames(Iterable<CqueryThreadsafeCallback> callbacks) {
return Streams.stream(callbacks).map(CqueryThreadsafeCallback::getName).collect(joining(", "));
}
public static CqueryThreadsafeCallback getCallback(
String type, Iterable<CqueryThreadsafeCallback> callbacks) {
for (CqueryThreadsafeCallback callback : callbacks) {
if (callback.getName().equals(type)) {
return callback;
}
}
return null;
}
public void addResult(String string) {
result.add(string);
}
@VisibleForTesting
public List<String> getResult() {
return result;
}
@Override
public void close(boolean failFast) throws InterruptedException, IOException {
if (!failFast && printStream != null) {
result.forEach(printStream::println);
}
}
}
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