[refactor]move monitor to webmagic-extension #98

webmagic-core/src/main/java/us/codecraft/webmagic/Request.java

@@ -111,7 +111,7 @@ public class Request implements Serializable {
     /**
      * The http method of the request. Get for default.
      * @return httpMethod
-     * @see us.codecraft.webmagic.constant.HttpConstant.Method
+     * @see us.codecraft.webmagic.utils.HttpConstant.Method
      * @since 0.5.0
      */
     public String getMethod() {

webmagic-core/src/main/java/us/codecraft/webmagic/Site.java

@@ -50,7 +50,7 @@ public class Site {
     private boolean useGzip = true;
 
     /**
-     * @see us.codecraft.webmagic.constant.HttpConstant.Header
+     * @see us.codecraft.webmagic.utils.HttpConstant.Header
      * @deprecated
      */
     public static interface HeaderConst {

webmagic-core/src/main/java/us/codecraft/webmagic/Spider.java

@@ -8,7 +8,6 @@ import org.slf4j.LoggerFactory;
 
 import us.codecraft.webmagic.downloader.Downloader;
 import us.codecraft.webmagic.downloader.HttpClientDownloader;
-import us.codecraft.webmagic.monitor.SpiderListener;
 import us.codecraft.webmagic.pipeline.CollectorPipeline;
 import us.codecraft.webmagic.pipeline.ConsolePipeline;
 import us.codecraft.webmagic.pipeline.Pipeline;

webmagic-core/src/main/java/us/codecraft/webmagic/SpiderListener.java

@@ -1,8 +1,8 @@
-package us.codecraft.webmagic.monitor;
-
-import us.codecraft.webmagic.Request;
+package us.codecraft.webmagic;
 
 /**
+ * Listener of Spider on page processing. Used for monitor and such on.
+ *
  * @author code4crafer@gmail.com
  * @since 0.5.0
  */

webmagic-core/src/main/java/us/codecraft/webmagic/downloader/HttpClientDownloader.java

@@ -18,7 +18,7 @@ import us.codecraft.webmagic.Page;
 import us.codecraft.webmagic.Request;
 import us.codecraft.webmagic.Site;
 import us.codecraft.webmagic.Task;
-import us.codecraft.webmagic.constant.HttpConstant;
+import us.codecraft.webmagic.utils.HttpConstant;
 import us.codecraft.webmagic.selector.PlainText;
 import us.codecraft.webmagic.utils.UrlUtils;
 

webmagic-core/src/main/java/us/codecraft/webmagic/scheduler/LocalDuplicatedRemovedScheduler.java

@@ -5,7 +5,6 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import us.codecraft.webmagic.Request;
 import us.codecraft.webmagic.Task;
-import us.codecraft.webmagic.monitor.MonitorableScheduler;
 
 import java.util.Set;
 import java.util.concurrent.ConcurrentHashMap;

webmagic-core/src/main/java/us/codecraft/webmagic/scheduler/MonitorableScheduler.java

@@ -1,7 +1,6 @@
-package us.codecraft.webmagic.monitor;
+package us.codecraft.webmagic.scheduler;
 
 import us.codecraft.webmagic.Task;
-import us.codecraft.webmagic.scheduler.Scheduler;
 
 /**
  * The scheduler whose requests can be counted for monitor.

webmagic-core/src/main/java/us/codecraft/webmagic/utils/HttpConstant.java

@@ -1,4 +1,4 @@
-package us.codecraft.webmagic.constant;
+package us.codecraft.webmagic.utils;
 
 /**
  * Some constants of Http protocal.

webmagic-extension/src/main/java/us/codecraft/webmagic/example/MonitorExample.java

@@ -0,0 +1,31 @@
+package us.codecraft.webmagic.example;
+
+import us.codecraft.webmagic.Spider;
+import us.codecraft.webmagic.monitor.SpiderMonitor;
+import us.codecraft.webmagic.processor.example.GithubRepoPageProcessor;
+import us.codecraft.webmagic.processor.example.OschinaBlogPageProcessor;
+
+/**
+ * @author code4crafer@gmail.com
+ */
+public class MonitorExample {
+
+    public static void main(String[] args) throws Exception {
+
+        Spider oschinaSpider = Spider.create(new OschinaBlogPageProcessor())
+                .addUrl("http://my.oschina.net/flashsword/blog").thread(2);
+        Spider githubSpider = Spider.create(new GithubRepoPageProcessor())
+                .addUrl("https://github.com/code4craft");
+
+        SpiderMonitor spiderMonitor = new SpiderMonitor();
+        spiderMonitor.register(oschinaSpider, githubSpider);
+        //If you want to connect it from remote, use spiderMonitor.server().jmxStart();
+        //ONLY ONE server can start for a machine.
+        //Others will be registered
+        spiderMonitor.server().server();
+        spiderMonitor.jmxStart();
+        oschinaSpider.start();
+        githubSpider.start();
+
+    }
+}

webmagic-extension/src/main/java/us/codecraft/webmagic/monitor/SpiderMonitor.java

@@ -1,9 +1,13 @@
 package us.codecraft.webmagic.monitor;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import us.codecraft.webmagic.Request;
 import us.codecraft.webmagic.Spider;
+import us.codecraft.webmagic.SpiderListener;
 import us.codecraft.webmagic.processor.example.GithubRepoPageProcessor;
 import us.codecraft.webmagic.processor.example.OschinaBlogPageProcessor;
+import us.codecraft.webmagic.utils.IPUtils;
 
 import javax.management.JMException;
 import javax.management.MBeanServer;
@@ -15,6 +19,7 @@ import java.io.IOException;
 import java.lang.management.ManagementFactory;
 import java.rmi.registry.LocateRegistry;
 import java.rmi.registry.Registry;
+import java.rmi.server.ExportException;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
@@ -30,6 +35,8 @@ public class SpiderMonitor {
         Server, Client, Local;
     }
 
+    private Logger logger = LoggerFactory.getLogger(getClass());
+
     private static final int DEFAULT_SERVER_PORT = 14721;
 
     private static final String DEFAULT_SERVER_HOST = "localhost";
@@ -52,6 +59,7 @@ public class SpiderMonitor {
 
     /**
      * Register spider for monitor.
+     *
      * @param spiders
      * @return
      */
@@ -113,13 +121,18 @@ public class SpiderMonitor {
 
     /**
      * Start monitor as server mode.
+     *
      * @param port
      * @return
      * @throws IOException
      * @throws JMException
      */
     public SpiderMonitor server(int port) throws IOException, JMException {
+        try {
             Registry registry = LocateRegistry.createRegistry(port);
+        } catch (ExportException e) {
+            logger.warn("Start server fail, maybe the address is in using.", e);
+        }
         serverPort = port;
         serverHost = "localhost";
         type = Type.Server;
@@ -128,6 +141,7 @@ public class SpiderMonitor {
 
     /**
      * Start monitor as server mode.
+     *
      * @return
      * @throws IOException
      * @throws JMException
@@ -139,6 +153,7 @@ public class SpiderMonitor {
 
     /**
      * Start monitor as client mode.
+     *
      * @param serverHost
      * @param serverPort
      * @return
@@ -154,6 +169,7 @@ public class SpiderMonitor {
 
     /**
      * Start monitor as client mode.
+     *
      * @return
      * @throws IOException
      * @throws JMException
@@ -167,7 +183,7 @@ public class SpiderMonitor {
     }
 
     public SpiderMonitor jmxStart(String jndiServer, int rmiPort) throws IOException, JMException {
-        String jmxServerName = "WebMagic";
+        String jmxServerName = "WebMagic-"+ IPUtils.getFirstNoLoopbackIPAddresses();
 
         // start JNDI
         MBeanServer localServer = ManagementFactory.getPlatformMBeanServer();
@@ -199,7 +215,10 @@ public class SpiderMonitor {
 
         SpiderMonitor spiderMonitor = new SpiderMonitor();
         spiderMonitor.register(oschinaSpider, githubSpider);
-        //
+        //If you want to connect it from remote, use spiderMonitor.server().jmxStart();
+        //ONLY ONE server can start for a machine.
+        //Others will be registered
+        spiderMonitor.server().server();
         spiderMonitor.jmxStart();
         oschinaSpider.start();
         githubSpider.start();

webmagic-extension/src/main/java/us/codecraft/webmagic/monitor/SpiderStatus.java

@@ -3,6 +3,7 @@ package us.codecraft.webmagic.monitor;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import us.codecraft.webmagic.Spider;
+import us.codecraft.webmagic.scheduler.MonitorableScheduler;
 
 import java.util.List;
 

webmagic-extension/src/main/java/us/codecraft/webmagic/scheduler/RedisScheduler.java

@@ -7,7 +7,6 @@ import redis.clients.jedis.JedisPool;
 import redis.clients.jedis.JedisPoolConfig;
 import us.codecraft.webmagic.Request;
 import us.codecraft.webmagic.Task;
-import us.codecraft.webmagic.monitor.MonitorableScheduler;
 
 /**
  * Use Redis as url scheduler for distributed crawlers.<br>

webmagic-extension/src/main/java/us/codecraft/webmagic/utils/IPUtils.java

@@ -0,0 +1,36 @@
+package us.codecraft.webmagic.utils;
+
+import java.net.Inet6Address;
+import java.net.InetAddress;
+import java.net.NetworkInterface;
+import java.net.SocketException;
+import java.util.Enumeration;
+
+/**
+ * @author code4crafer@gmail.com
+ * @since 0.5.0
+ */
+public abstract class IPUtils {
+
+    public static String getFirstNoLoopbackIPAddresses() throws SocketException {
+
+        Enumeration<NetworkInterface> networkInterfaces = NetworkInterface.getNetworkInterfaces();
+
+        InetAddress localAddress = null;
+        while (networkInterfaces.hasMoreElements()) {
+            NetworkInterface networkInterface = networkInterfaces.nextElement();
+            Enumeration<InetAddress> inetAddresses = networkInterface.getInetAddresses();
+            while (inetAddresses.hasMoreElements()) {
+                InetAddress address = inetAddresses.nextElement();
+                if (!address.isLoopbackAddress() && !Inet6Address.class.isInstance(address)) {
+                    return address.getHostAddress();
+                } else if (!address.isLoopbackAddress()) {
+                    localAddress = address;
+                }
+            }
+        }
+
+        return localAddress.getHostAddress();
+    }
+
+}

webmagic-extension/src/test/java/us/codecraft/webmagic/utils/IPUtilsTest.java

@@ -0,0 +1,14 @@
+package us.codecraft.webmagic.utils;
+
+import org.junit.Test;
+
+/**
+ * @author code4crafer@gmail.com
+ */
+public class IPUtilsTest {
+
+    @Test
+    public void testGetFirstNoLoopbackIPAddresses() throws Exception {
+        System.out.println(IPUtils.getFirstNoLoopbackIPAddresses());
+    }
+}