介绍

实现了一个简单的从实时日志文件监听，写入socket服务器，再接入Storm计算的一个流程。

源码

日志监听实时写入socket服务器

[java] view plain copy

1. package socket;
2. import java.io.BufferedReader;
3. import java.io.File;
4. import java.io.IOException;
5. import java.io.InputStreamReader;
6. import java.io.PrintWriter;
7. import java.io.RandomAccessFile;
8. import java.net.Socket;
9. import java.util.concurrent.Executors;
10. import java.util.concurrent.ScheduledExecutorService;
11. import java.util.concurrent.TimeUnit;
12. /*
13. * 监测数据，通过socket远程发送到另外服务器 ，见MyServerMulti
14. * ClientRead再通过服务器从socket里读
15. *
16. */
17. public class LogViewToSocket {
18. private long lastTimeFileSize = 0;  //上次文件大小
19. /**
20. * 实时输出日志信息
21. * @param logFile 日志文件
22. * @throws IOException
23. */
24. public String getNewFile(File file)
25. {
26. File[] fs=file.listFiles();
27. long maxtime=0;
28. String newfilename="";
29. for (int i=0;i<fs.length;i++)
30. {
31. if (fs[i].lastModified()>maxtime)
32. {
33. maxtime=fs[i].lastModified();
34. newfilename=fs[i].getAbsolutePath();
35. }
36. }
37. return newfilename;
38. }
39. RandomAccessFile randomFile=null;
40. String newfile=null;
41. String thisfile=null;
42. public void realtimeShowLog(final File logFile,final PrintWriter out) throws IOException{
43. newfile=getNewFile(logFile);
44. //指定文件可读可写
45. randomFile = new RandomAccessFile(new File(newfile),"r");
46. //启动一个线程每1秒钟读取新增的日志信息
47. ScheduledExecutorService exec =
48. Executors.newScheduledThreadPool(1);
49. exec.scheduleWithFixedDelay(new Runnable(){
50. public void run() {
51. try {
52. //获得变化部分的
53. randomFile.seek(lastTimeFileSize);
54. String tmp = "";
55. while( (tmp = randomFile.readLine())!= null) {
56. System.out.println(new String(tmp.getBytes("ISO8859-1")));
57. out.println(new String(tmp.getBytes("ISO8859-1")));
58. out.flush();
59. }
60. thisfile=getNewFile(logFile);
61. if(!thisfile.equals(newfile))
62. {
63. randomFile = new RandomAccessFile(new File(newfile),"r");
64. lastTimeFileSize=0;
65. }
66. else
67. lastTimeFileSize = randomFile.length();
68. } catch (IOException e) {
69. throw new RuntimeException(e);
70. }
71. }
72. }, 0, 1, TimeUnit.SECONDS);
73. }
74. public static void main(String[] args) throws Exception {
75. LogViewToSocket view = new LogViewToSocket();
76. Socket socket=new Socket("192.168.27.100",5678);
77. PrintWriter out=new PrintWriter(socket.getOutputStream());
78. final File tmpLogFile = new File("/home/hadoop/test");
79. view.realtimeShowLog(tmpLogFile,out);
80. // socket.close();
81. }
82. }

socket服务器处理

[java] view plain copy

1. import java.io.BufferedReader;
2. import java.io.IOException;
3. import java.io.InputStreamReader;
4. import java.io.PrintWriter;
5. import java.net.ServerSocket;
6. import java.net.Socket;
7. import java.net.SocketAddress;
8. import java.util.*;
9. public class MyServerMulti {
10. private static Socket socket1;
11. public static void main(String[] args) throws IOException {
12. ServerSocket server = new ServerSocket(5678);
13. int i=0;
14. ArrayList<PrintWriter> outs=new ArrayList<PrintWriter>();
15. /*
16. * 一个client socket发送数据过来， server端再发到其他client socket端
17. *
18. */
19. Socket socket1=null;
20. while (true) {
21. Socket socket = server.accept();
22. i++;
23. System.out.println(i);
24. System.out.println(socket.getInetAddress());
25. PrintWriter out= new PrintWriter(socket.getOutputStream());
26. outs.add(out);
27. if(i==1)
28. socket1=socket;
29. if(i==2)
30. invoke(socket1,outs);
31. }
32. }
33. private static void invoke(final Socket client, final ArrayList<PrintWriter> outs) throws IOException {
34. new Thread(new Runnable() {
35. public void run() {
36. BufferedReader in = null;
37. PrintWriter out = null;
38. PrintWriter out1 = null;
39. try {
40. in = new BufferedReader(new InputStreamReader(client.getInputStream()));
41. out = new PrintWriter(client.getOutputStream());
42. while (true) {
43. String msg = in.readLine();
44. System.out.println(msg);
45. out.println("Server received " + msg);
46. out.flush();
47. /*数据转发送到多个client*/
48. for(int i=0;i<outs.size();i++)
49. {
50. out1=outs.get(i);
51. System.out.println(i);
52. System.out.println("send msg:"+msg);
53. out1.println(msg);
54. out1.flush();
55. }
56. System.out.println(client.getInetAddress());
57. if (msg.equals("bye")) {
58. break;
59. }
60. }
61. } catch(IOException ex) {
62. ex.printStackTrace();
63. } finally {
64. try {
65. in.close();
66. } catch (Exception e) {}
67. try {
68. out.close();
69. } catch (Exception e) {}
70. try {
71. client.close();
72. } catch (Exception e) {}
73. }
74. }
75. }).start();
76. }
77. }

storm topology

[java] view plain copy

1. import java.io.BufferedReader;
2. import java.io.BufferedWriter;
3. import java.io.File;
4. import java.io.FileNotFoundException;
5. import java.io.FileOutputStream;
6. import java.io.FileReader;
7. import java.io.FileWriter;
8. import java.io.IOException;
9. import java.io.InputStreamReader;
10. import java.io.OutputStreamWriter;
11. import java.io.PrintWriter;
12. import java.io.RandomAccessFile;
13. import java.net.Socket;
14. import java.net.UnknownHostException;
15. import java.util.Map;
16. //import mytest.ThroughputTest.GenSpout;
17. import backtype.storm.Config;
18. import backtype.storm.LocalCluster;
19. import backtype.storm.StormSubmitter;
20. import backtype.storm.generated.AlreadyAliveException;
21. import backtype.storm.generated.InvalidTopologyException;
22. import backtype.storm.spout.SpoutOutputCollector;
23. import backtype.storm.task.OutputCollector;
24. import backtype.storm.task.TopologyContext;
25. import backtype.storm.topology.BasicOutputCollector;
26. import backtype.storm.topology.OutputFieldsDeclarer;
27. import backtype.storm.topology.TopologyBuilder;
28. import backtype.storm.topology.base.BaseBasicBolt;
29. import backtype.storm.topology.base.BaseRichBolt;
30. import backtype.storm.topology.base.BaseRichSpout;
31. import backtype.storm.tuple.Fields;
32. import backtype.storm.tuple.Tuple;
33. import backtype.storm.tuple.Values;
34. import backtype.storm.utils.Utils;
35. /*
36. *
37. *
38. *  storm jar stormtest.jar socket.SocketProcess /home/hadoop/out_socket.txt true
39. *
40. */
41. public class SocketProcess {
42. public static class  SocketSpout extends BaseRichSpout {
43. /**
44. */
45. static Socket sock=null;
46. static BufferedReader in=null;
47. String str=null;
48. private static final long serialVersionUID = 1L;
49. private SpoutOutputCollector _collector;
50. private BufferedReader br;
51. private String dataFile;
52. private BufferedWriter bw2;
53. RandomAccessFile randomFile;
54. private long lastTimeFileSize = 0;
55. int cnt=0;
56. //定义spout文件
57. SocketSpout(){
58. }
59. //定义如何读取spout文件
60. @Override
61. public void open(Map conf, TopologyContext context,
62. SpoutOutputCollector collector) {
63. // TODO Auto-generated method stub
64. _collector = collector;
65. try {
66. sock=new Socket("192.168.27.100",5678);
67. in=
68. new BufferedReader(new InputStreamReader(sock.getInputStream()));
69. } catch (UnknownHostException e) {
70. // TODO Auto-generated catch block
71. e.printStackTrace();
72. } catch (IOException e) {
73. // TODO Auto-generated catch block
74. e.printStackTrace();
75. }
76. }
77. //获取下一个tuple的方法
78. @Override
79. public void nextTuple() {
80. // TODO Auto-generated method stub
81. if(sock==null){
82. try {
83. sock=new Socket("192.168.27.100",5678);
84. in=
85. new BufferedReader(new InputStreamReader(sock.getInputStream()));
86. } catch (UnknownHostException e) {
87. // TODO Auto-generated catch block
88. e.printStackTrace();
89. } catch (IOException e) {
90. // TODO Auto-generated catch block
91. e.printStackTrace();
92. }
93. }
94. while(true){
95. try {
96. str = in.readLine();
97. } catch (IOException e) {
98. // TODO Auto-generated catch block
99. e.printStackTrace();
100. }
101. System.out.println(str);
102. _collector.emit(new Values(str));
103. if(str.equals("end")){
104. break;
105. }
106. }
107. }
108. @Override
109. public void declareOutputFields(OutputFieldsDeclarer declarer) {
110. // TODO Auto-generated method stub
111. declarer.declare(new Fields("line"));
112. }
113. }
114. public static class Process extends BaseRichBolt{
115. private String _seperator;
116. private String _outFile;
117. PrintWriter pw;
118. private OutputCollector _collector;
119. private BufferedWriter bw;
120. public Process(String outFile) {
121. this._outFile   = outFile;
122. }
123. //把输出结果保存到外部文件里面。
124. @Override
125. public void prepare(Map stormConf, TopologyContext context,
126. OutputCollector collector) {
127. // TODO Auto-generated method stub
128. this._collector = collector;
129. File out = new File(_outFile);
130. try {
131. //                                  br = new BufferedWriter(new FileWriter(out));
132. bw = new BufferedWriter(new OutputStreamWriter(
133. new FileOutputStream(out, true)));
134. } catch (IOException e1) {
135. // TODO Auto-generated catch block
136. e1.printStackTrace();
137. }
138. }
139. //blot计算单元，把tuple中的数据添加一个bkeep和回车。然后保存到outfile指定的文件中。
140. @Override
141. public void execute(Tuple input) {
142. // TODO Auto-generated method stub
143. String line = input.getString(0);
144. //                         System.out.println(line);
145. //     String[] str = line.split(_seperator);
146. //   System.out.println(str[2]);
147. try {
148. bw.write(line+",bkeep"+"\n");
149. bw.flush();
150. } catch (IOException e) {
151. // TODO Auto-generated catch block
152. e.printStackTrace();
153. }
154. _collector.emit(new Values(line));
155. }
156. @Override
157. public void declareOutputFields(OutputFieldsDeclarer declarer) {
158. // TODO Auto-generated method stub
159. declarer.declare(new Fields("line"));
160. }
161. }
162. public static void main(String[] argv) throws AlreadyAliveException, InvalidTopologyException{
163. String outFile   = argv[0]; //输出文件
164. boolean distribute = Boolean.valueOf(argv[1]);       //本地模式还是集群模式
165. TopologyBuilder builder = new TopologyBuilder();  //build一个topology
166. builder.setSpout("spout", new  SocketSpout(), 1);   //指定spout
167. builder.setBolt("bolt", new Process(outFile),1).shuffleGrouping("spout");  //指定bolt，包括bolt、process和grouping
168. Config conf = new Config();
169. if(distribute){
170. StormSubmitter.submitTopology("SocketProcess", conf, builder.createTopology());
171. }else{
172. LocalCluster cluster = new LocalCluster();
173. cluster.submitTopology("SocketProcess", conf, builder.createTopology());
174. }
175. }
176. }

最后执行

[java] view plain copy

1. storm jar stormtest.jar socket.SocketProcess /home/hadoop/out_socket.txt true

spout接受从socket服务器实时发送过来的数据，经过topology处理，最终将数据写入out_socket.txt文件

转：http://blog.csdn.net/u011750989/article/details/18547015