/*
* Copyright 2017 the original author or authors.
*
* 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 org.gradle.internal.operations.trace;
import groovy.json.JsonOutput;
import org.gradle.internal.UncheckedException;
import org.gradle.internal.progress.BuildOperationDescriptor;
import org.gradle.internal.progress.BuildOperationListener;
import org.gradle.internal.progress.OperationFinishEvent;
import org.gradle.internal.progress.OperationStartEvent;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Map;
/**
* Note: this is relying on Gradle's listener infrastructure serializing dispatch
* and prevent concurrent invocations of started/finished.
*/
class SerializingBuildOperationListener implements BuildOperationListener {
private static final byte[] NEWLINE = "\n".getBytes();
private static final byte[] INDENT = " ".getBytes();
private OutputStream out;
SerializingBuildOperationListener(OutputStream out) {
this.out = out;
}
@Override
public void started(BuildOperationDescriptor buildOperation, OperationStartEvent startEvent) {
write(new SerializedOperationStart(buildOperation, startEvent).toMap(), false);
}
@Override
public void finished(BuildOperationDescriptor buildOperation, OperationFinishEvent finishEvent) {
write(new SerializedOperationFinish(buildOperation, finishEvent).toMap(), true);
}
private void write(Map<String, ?> entry, boolean indent) {
String json = JsonOutput.toJson(entry);
try {
if (indent) {
out.write(INDENT);
}
out.write(json.getBytes("UTF-8"));
out.write(NEWLINE);
} catch (IOException e) {
throw UncheckedException.throwAsUncheckedException(e);
}
}
}