com.intuit.karate.shell.FileLogAppender Maven / Gradle / Ivy
/*
* The MIT License
*
* Copyright 2018 Intuit Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package com.intuit.karate.shell;
import com.intuit.karate.FileUtils;
import com.intuit.karate.LogAppender;
import java.io.File;
import java.io.RandomAccessFile;
import java.nio.Buffer;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
*
* @author pthomas3
*/
public class FileLogAppender implements LogAppender {
private static final Logger LOGGER = LoggerFactory.getLogger(FileLogAppender.class);
private final RandomAccessFile file;
private final FileChannel channel;
private int prevPos;
private boolean closed;
public FileLogAppender(File in) {
try {
if (in == null) {
in = File.createTempFile("karate", "tmp");
} else {
if (!in.getParentFile().exists()) {
in.getParentFile().mkdirs();
}
}
file = new RandomAccessFile(in, "rw");
channel = file.getChannel();
prevPos = (int) channel.position();
} catch (Exception e) {
throw new RuntimeException(e);
}
}
private String getBuffer(boolean resetAndClear) {
try {
int pos = (int) channel.position();
ByteBuffer buf = ByteBuffer.allocate(pos - prevPos);
channel.read(buf, prevPos);
if (resetAndClear) {
prevPos = pos;
}
((Buffer) buf).flip(); // java 8 to 9 fix
return FileUtils.toString(buf.array());
} catch (Exception e) {
throw new RuntimeException(e);
}
}
@Override
public String getBuffer() {
return getBuffer(false);
}
@Override
public String collect() {
return getBuffer(true);
}
@Override
public void append(String text) {
if (closed) {
return;
}
try {
channel.write(ByteBuffer.wrap(FileUtils.toBytes(text)));
} catch (Exception e) {
throw new RuntimeException(e);
}
}
@Override
public void close() {
try {
file.close();
closed = true;
} catch (Exception e) {
LOGGER.warn("log appender close failed: {}", e.getMessage());
}
}
}