云计算实战 （海量日志管理）hadoop + scribe -- log4j 客户端写入scribe

dengwen3

上一篇文章已经安装完scribe，下面我们用java端，通过log4j 把日志写入scribe 日志系统。
 
 
一、生成scribe客户端

• 生成 java客户端api
  

   A. 修改配置文件scribe.thrift
      cd /usr/local/scribeInstall/scribe/if
      vi scribe.thrift
      修改scribe.thrift文件: 把 include "fb303/if/fb303.thrift" 改成
      include "[thrift解压路径]/thrift-0.5.0/contrib/fb303/if/fb303.thrift"
   B. 生成 java客户端api     
      运行命令 thrift --gen java scribe.thrift
      运行后会生成一个‘gen-java’的文件夹.里面会有3个java类，封装了所有java客户端发送log所需要的api。
 
 

• 生成客户端代码所需要的jar包
  

   A. 如果之前没设置ANT_HOME 和 PATH 请先设置这两个环境变量
      export ANT_HOME=/usr/local/apache-ant-1.8.0
      export PATH=$PATH:$ANT_HOME/bin
   B. 生成libthrift.jar
      cd /usr/local/scribeInstall/thrift-0.2.0/lib/java
      ant 
      (如果没有错误在本文夹夹下会生成libthrift.jar)
   C. 生成libfb303.jar
 
 cd /usr/local/scribeInstall/thrift-0.2.0/contrib/fb303/java
ant
ant 执行成功后 libfb303.jar 会出现在/usr/local/scribeInstall/contrib/fb303/java/build/lib下
 
 
二、创建项目，运行测试 

• 创建项目
  

     A.在eclipse 创建普通java项目

     B.在项目中导入以下jar

     


    C.在项目中添加gen-java 文件夹里的三个java类。

•    编写项目
  

    编写log4j 的scribe appender 




    AsyncScribeAppender.java:

    
package com.logtest;
import org.apache.log4j.AsyncAppender;
/**
* log4j 的scribe appender
* 用ScribeAppender 类连接scribe服务器，并把日志写如scribe
* @author ninja
*/
public class AsyncScribeAppender extends AsyncAppender {
private String hostname;
private String scribeHost;
private int scribePort;
private String scribeCategory;
private String encoading;
public String getHostname() {
return hostname;
}
public void setHostname(String hostname) {
this.hostname = hostname;
}
public String getScribeHost() {
return scribeHost;
}
public void setScribeHost(String scribeHost) {
this.scribeHost = scribeHost;
}
public int getScribePort() {
return scribePort;
}
public void setScribePort(int scribePort) {
this.scribePort = scribePort;
}
public String getScribeCategory() {
return scribeCategory;
}
public void setScribeCategory(String scribeCategory) {
this.scribeCategory = scribeCategory;
}
public String getEncoading() {
return encoading;
}
public void setEncoading(String encoading) {
this.encoading = encoading;
}
@Override
public void activateOptions() {
super.activateOptions();
synchronized (this) {
ScribeAppender scribeAppender = new ScribeAppender();
scribeAppender.setLayout(getLayout());
scribeAppender.setHostname(getHostname());
scribeAppender.setScribeHost(getScribeHost());
scribeAppender.setScribePort(getScribePort());
scribeAppender.setScribeCategory(getScribeCategory());
scribeAppender.setEncoding(getEncoading());
scribeAppender.activateOptions();
addAppender(scribeAppender);
}
}
@Override
public boolean requiresLayout() {
return true;
}
}
 



 ScribeAppender .java




 

package com.logtest;
import net.scribe.LogEntry;
import net.scribe.scribe;
import org.apache.log4j.WriterAppender;
import org.apache.log4j.spi.LoggingEvent;
import org.apache.thrift.protocol.TBinaryProtocol;
import org.apache.thrift.transport.TFramedTransport;
import org.apache.thrift.transport.TSocket;
import org.apache.thrift.transport.TTransportException;
import java.util.List;
import java.util.ArrayList;
import java.net.Socket;
import java.net.UnknownHostException;
import java.net.InetAddress;
import java.io.IOException;
/**
* 继承WriterAppender
* 实现了scribe 服务器的链接和日志的发送。
* @author ninja
*/
public class ScribeAppender extends WriterAppender {
private String hostname;
private String scribeHost;
private int scribePort;
private String scribeCategory;
private String encoding;
private List<LogEntry> logEntries;
private scribe.Client client;
private TFramedTransport transport;
public String getHostname() {
return hostname;
}
public void setHostname(String hostname) {
this.hostname = hostname;
}
public String getScribeHost() {
return scribeHost;
}
public void setScribeHost(String scribeHost) {
this.scribeHost = scribeHost;
}
public int getScribePort() {
return scribePort;
}
public void setScribePort(int scribePort) {
this.scribePort = scribePort;
}
public String getScribeCategory() {
return scribeCategory;
}
public void setScribeCategory(String scribeCategory) {
this.scribeCategory = scribeCategory;
}

public String getEncoding() {
return encoding;
}
public void setEncoding(String encoding) {
this.encoding = encoding;
}
/*
* Activates this Appender by opening a transport to the Scribe server.
*/
@Override
public void activateOptions() {
try {
synchronized (this) {
if (hostname == null) {
try {
hostname = InetAddress.getLocalHost()
.getCanonicalHostName();
} catch (UnknownHostException e) {
// can't get hostname
}
}
System.out.println(scribeHost + scribePort + scribeCategory + encoding);
// Thrift boilerplate code
logEntries = new ArrayList<LogEntry>(1);
TSocket sock = new TSocket(new Socket(scribeHost, scribePort));
transport = new TFramedTransport(sock);
TBinaryProtocol protocol = new TBinaryProtocol(transport,
false, false);
client = new scribe.Client(protocol, protocol);
// This is commented out because it was throwing Exceptions for
// no good reason.
// transport.open();
}
} catch (TTransportException e) {
e.printStackTrace();
} catch (UnknownHostException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
}
/*
* Appends a log message to Scribe
*/
@Override
public void append(LoggingEvent event) {
synchronized (this) {
try {
String message = String.format("%s %s", hostname, layout
.format(event));
LogEntry entry = new LogEntry(scribeCategory, message);
logEntries.add(entry);
client.Log(logEntries);
} catch (Exception e) {
e.printStackTrace();
} finally {
logEntries.clear();
}
}
}
@Override
public void close() {
if (transport != null) {
transport.close();
}
}
@Override
public boolean requiresLayout() {
return true;
}
}
 
 
   log4j.properties
 

#1 \u5b9a\u4e49\u4e86\u4e24\u4e2a\u8f93\u51fa\u7aef
log4j.rootLogger = DEBUG,CONSOLE,scribe
log4j.addivity.org.apache=true
log4j.appender.CONSOLE = org.apache.log4j.ConsoleAppender
log4j.appender.CONSOLE.layout = org.apache.log4j.PatternLayout
log4j.appender.CONSOLE.layout.ConversionPattern = %-4r [%t] %-5p %c - %m%n
log4j.logger.com.vmars= DEBUG, scribe
log4j.appender.scribe= com.logtest.AsyncScribeAppender
log4j.appender.scribe.encoading=utf-8
log4j.appender.scribe.hostname=scribe
log4j.appender.scribe.scribeHost=192.168.2.221
log4j.appender.scribe.scribePort=1463
log4j.appender.scribe.hostname=ninja
log4j.appender.scribe.scribeCategory=scribe
log4j.appender.scribe.layout=org.apache.log4j.PatternLayout
log4j.appender.scribe.layout.ConversionPattern=%d{yy/MM/dd HH:mm:ss} %p %c{2}: %m%n

 
 
   测试客户端：
 

package com.logtest;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

public class LogTest {
private static Log log = LogFactory.getLog(LogTest.class);
public static void main(String[] args) {
log.error("this is a charactor test ");
log.debug("这是中文测试");
log.fatal("fatal error 致命错误！！");
}
}

 



 
所有资源均在resources.rar 中。