com.adsame.samelogs.SameLogsSink.java Source code

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Here is the source code for com.adsame.samelogs.SameLogsSink.java

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/**
 * Licensed to Cloudera, Inc. under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  Cloudera, Inc. 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 com.adsame.samelogs;

import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.Map;
//import java.util.Iterator;
import java.util.List;
//import java.util.Map;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FSDataOutputStream;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.cloudera.flume.conf.Context;
import com.cloudera.flume.conf.SinkFactory.SinkBuilder;
import com.cloudera.flume.core.Event;
import com.cloudera.flume.core.EventSink;
import com.cloudera.flume.handlers.text.TailSource;
import com.cloudera.util.Pair;
import com.google.common.base.Preconditions;

/**
 * Simple Sink that writes to a "helloworld.txt" file.
 */
public class SameLogsSink extends EventSink.Base {
    static final Logger LOG = LoggerFactory.getLogger(SameLogsSink.class);
    private PrintWriter pw;

    @Override
    public void open() throws IOException {
        // Initialized the sink
        pw = new PrintWriter(new FileWriter("SameLogs.txt"));
    }

    @SuppressWarnings("rawtypes")
    @Override
    public void append(Event e) throws IOException {
        // append the event to the output
        byte[] fn = e.get(TailSource.A_TAILSRCFILE);
        byte[] bd = e.getBody();
        System.out.println("##" + new String(fn) + "##" + new String(bd));

        Map<String, byte[]> maps = e.getAttrs();

        Iterator iter = maps.entrySet().iterator();
        while (iter.hasNext()) {
            Map.Entry entry = (Map.Entry) iter.next();
            String key = (String) entry.getKey();
            System.out.println("key: " + key);
        }

        // here we are assuming the body is a string
        pw.println(new String(e.getBody()));
        pw.flush(); // so we can see it in the file right away

        Configuration configuration = new Configuration();
        FileSystem hdfsFileSystem = FileSystem.get(configuration);
        Path path = new Path("hdfs://nodie-Ubuntu4:9000/user/nodie/input/dfs/hello");
        FSDataOutputStream out;
        System.out.println("exists: " + hdfsFileSystem.exists(path));
        if (hdfsFileSystem.exists(path)) {
            out = hdfsFileSystem.append(path);
        } else {
            out = hdfsFileSystem.create(path);
        }

        out.write(e.getBody());
        out.writeChar('\n');
        out.flush();
        out.close();
    }

    @Override
    public void close() throws IOException {
        // Cleanup
        pw.flush();
        pw.close();
    }

    public static SinkBuilder builder() {
        return new SinkBuilder() {
            // construct a new parameterized sink
            @Override
            public EventSink build(Context context, String... argv) {
                Preconditions.checkArgument(argv.length == 0, "usage: SameLogsSink");

                return new SameLogsSink();
            }
        };
    }

    /**
     * This is a special function used by the SourceFactory to pull in this
     * class as a plugin sink.
     */
    public static List<Pair<String, SinkBuilder>> getSinkBuilders() {
        List<Pair<String, SinkBuilder>> builders = new ArrayList<Pair<String, SinkBuilder>>();
        builders.add(new Pair<String, SinkBuilder>("SameLogsSink", builder()));
        return builders;
    }
}