/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.ambari.logfeeder.output;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Map;
import org.apache.ambari.logfeeder.input.InputMarker;
import org.apache.ambari.logfeeder.util.LogFeederUtil;
import org.apache.commons.csv.CSVFormat;
import org.apache.commons.csv.CSVPrinter;
import org.apache.commons.lang3.StringUtils;
import org.apache.log4j.Logger;
public class OutputFile extends Output {
private static final Logger LOG = Logger.getLogger(OutputFile.class);
private PrintWriter outWriter;
private String filePath = null;
private String codec;
@Override
public void init() throws Exception {
super.init();
filePath = getStringValue("path");
if (StringUtils.isEmpty(filePath)) {
LOG.error("Filepath config property <path> is not set in config file.");
return;
}
codec = getStringValue("codec");
if (StringUtils.isBlank(codec)) {
codec = "json";
} else {
if (codec.trim().equalsIgnoreCase("csv")) {
codec = "csv";
} else if (codec.trim().equalsIgnoreCase("json")) {
codec = "csv";
} else {
LOG.error("Unsupported codec type. codec=" + codec + ", will use json");
codec = "json";
}
}
LOG.info("Out filePath=" + filePath + ", codec=" + codec);
File outFile = new File(filePath);
if (outFile.getParentFile() != null) {
File parentDir = outFile.getParentFile();
if (!parentDir.isDirectory()) {
parentDir.mkdirs();
}
}
outWriter = new PrintWriter(new BufferedWriter(new FileWriter(outFile, true)));
LOG.info("init() is successfull. filePath=" + outFile.getAbsolutePath());
}
@Override
public void close() {
LOG.info("Closing file." + getShortDescription());
if (outWriter != null) {
try {
outWriter.close();
} catch (Throwable t) {
// Ignore this exception
}
}
isClosed = true;
}
@Override
public void write(Map<String, Object> jsonObj, InputMarker inputMarker) throws Exception {
String outStr = null;
CSVPrinter csvPrinter = null;
try {
if (codec.equals("csv")) {
csvPrinter = new CSVPrinter(outWriter, CSVFormat.RFC4180);
//TODO:
} else {
outStr = LogFeederUtil.getGson().toJson(jsonObj);
}
if (outWriter != null && outStr != null) {
statMetric.value++;
outWriter.println(outStr);
outWriter.flush();
}
} finally {
if (csvPrinter != null) {
try {
csvPrinter.close();
} catch (IOException e) {
}
}
}
}
@Override
synchronized public void write(String block, InputMarker inputMarker) throws Exception {
if (outWriter != null && block != null) {
statMetric.value++;
outWriter.println(block);
outWriter.flush();
}
}
@Override
public String getShortDescription() {
return "output:destination=file,path=" + filePath;
}
@Override
public void copyFile(File inputFile, InputMarker inputMarker) throws UnsupportedOperationException {
throw new UnsupportedOperationException("copyFile method is not yet supported for output=file");
}
}