org.sonar.server.ws.CacheWriter Maven / Gradle / Ivy
/*
* SonarQube
* Copyright (C) 2009-2018 SonarSource SA
* mailto:info AT sonarsource DOT com
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package org.sonar.server.ws;
import java.io.IOException;
import java.io.StringWriter;
import java.io.Writer;
import org.apache.commons.io.IOUtils;
/**
* Writer that writes only when closing the resource
*/
class CacheWriter extends Writer {
private final StringWriter bufferWriter;
private final Writer outputWriter;
private boolean isClosed;
CacheWriter(Writer outputWriter) {
this.bufferWriter = new StringWriter();
this.outputWriter = outputWriter;
this.isClosed = false;
}
@Override
public void write(char[] cbuf, int off, int len) {
bufferWriter.write(cbuf, off, len);
}
@Override
public void flush() {
bufferWriter.flush();
}
@Override
public void close() throws IOException {
if (isClosed) {
return;
}
IOUtils.write(bufferWriter.toString(), outputWriter);
outputWriter.close();
this.isClosed = true;
}
}