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/*******************************************************************************
* Copyright (c) 2009, 2021 Mountainminds GmbH & Co. KG and Contributors
* This program and the accompanying materials are made available under
* the terms of the Eclipse Public License 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Brock Janiczak - initial API and implementation
*
*******************************************************************************/
package org.jacoco.agent.rt.internal.output;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import org.jacoco.core.data.ExecutionDataWriter;
import org.jacoco.core.runtime.AgentOptions;
import org.jacoco.core.runtime.RuntimeData;
/**
* Local only agent output that will write coverage data to the filesystem. This
* controller uses the following agent options:
* <ul>
* <li>destfile</li>
* <li>append</li>
* </ul>
*/
public class FileOutput implements IAgentOutput {
private RuntimeData data;
private File destFile;
private boolean append;
public final void startup(final AgentOptions options,
final RuntimeData data) throws IOException {
this.data = data;
this.destFile = new File(options.getDestfile()).getAbsoluteFile();
this.append = options.getAppend();
final File folder = destFile.getParentFile();
if (folder != null) {
folder.mkdirs();
}
// Make sure we can write to the file:
openFile().close();
}
public void writeExecutionData(final boolean reset) throws IOException {
final OutputStream output = openFile();
try {
final ExecutionDataWriter writer = new ExecutionDataWriter(output);
data.collect(writer, writer, reset);
} finally {
output.close();
}
}
public void shutdown() throws IOException {
// Nothing to do
}
private OutputStream openFile() throws IOException {
final FileOutputStream file = new FileOutputStream(destFile, append);
// Avoid concurrent writes from different agents running in parallel:
file.getChannel().lock();
return file;
}
}
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