| <%@ page language="java" import="java.sql.*"%> | |
| <html> | |
| <head> | |
| <title>Sample Application Database JSP Page</title> | |
| </head> | |
| <body bgcolor=white> | |
| <table border="0"> | |
| <tr> | |
| <td align=center> | |
| <img src="images/bridge-small.png"> | |
| </td> | |
| <td> | |
| <h1>Sample Brooklyn Deployed WebApp (Database JSP)</h1> | |
| This is the output of a JSP page that is part of the Hello, World application, | |
| deployed by brooklyn, to show <b>a hadoop map-reduce task run<b>. | |
| </td> | |
| </tr> | |
| </table> | |
| <% | |
| String hadoop=System.getProperty("brooklyn.example.hadoop.site.xml.url"); | |
| String hadoopJar=System.getProperty("brooklyn.example.hadoop.custom.jar.url"); | |
| if (hadoop==null) { | |
| %> | |
| <p>There is no hadoop included as part of this example. Set brooklyn.example.hadoop.site.xml.url to proceed.</p> | |
| <% } else if (hadoopJar==null) { | |
| %> | |
| <p>brooklyn.example.hadoop.custom.jar.url must be set to point to the Jar.</p> | |
| <%} else { /* begin hadoop-enabled block */ | |
| try { | |
| org.apache.hadoop.conf.Configuration conf = new org.apache.hadoop.conf.Configuration(); | |
| conf.setClassLoader(brooklyn.demo.webapp.hello.HadoopWordCount.class.getClassLoader()); | |
| conf.addResource(new java.net.URL(hadoop)); | |
| org.apache.hadoop.fs.FileSystem fsClient = org.apache.hadoop.fs.FileSystem.get(conf); | |
| if (fsClient==null) throw new NullPointerException("Can't access fsClient at "+hadoop); | |
| org.apache.hadoop.mapreduce.Job job = brooklyn.demo.webapp.hello.HadoopWordCount.makeJob(conf); | |
| ((org.apache.hadoop.mapred.JobConf)job.getConfiguration()).setJar(hadoopJar); | |
| org.apache.hadoop.fs.FileStatus[] files = fsClient.listStatus(new org.apache.hadoop.fs.Path("chats")); | |
| if (files==null) files = new org.apache.hadoop.fs.FileStatus[0]; | |
| for (org.apache.hadoop.fs.FileStatus f: files) { | |
| org.apache.hadoop.mapreduce.lib.input.FileInputFormat.addInputPath(job, f.getPath()); | |
| } | |
| org.apache.hadoop.fs.Path outp = new org.apache.hadoop.fs.Path("out-"+((int)(Math.random()*10000))); | |
| org.apache.hadoop.mapreduce.lib.output.FileOutputFormat.setOutputPath(job, outp); | |
| boolean result = job.waitForCompletion(true); | |
| if (!result) { | |
| %> <p><b></b><i>Map reduce job returned non-zero result code.</i></b></p> <% | |
| } | |
| %> <p>Output from map reduce is as follows:</p> <% | |
| files = fsClient.listStatus(outp); | |
| if (files==null) files = new org.apache.hadoop.fs.FileStatus[0]; | |
| for (org.apache.hadoop.fs.FileStatus f: files) { | |
| try { | |
| if (!f.isDir() && f.getLen()>0) { | |
| %> | |
| <%= f.getPath() %>:<br/> | |
| <pre><%= brooklyn.demo.webapp.hello.DemoUtils.stringFromInputStream(fsClient.open(f.getPath())) %></pre> | |
| <% | |
| } | |
| } catch (Exception e) { | |
| %> Error: <%= e %><% | |
| } | |
| } | |
| if (files.length==0) { | |
| %> | |
| <i>No output.</i> </li> | |
| <% | |
| } | |
| fsClient.delete(outp, true); | |
| } catch (Exception e) { | |
| %> | |
| <b>Error connecting to Hadoop.</b><br/> | |
| ERROR: <%= e %><br/> | |
| <pre> <%= brooklyn.demo.webapp.hello.DemoUtils.getStackTrace(e) %></pre> | |
| <% | |
| } | |
| } | |
| %> | |
| <br/> | |
| <p>Click <a href="hadoop-chat.jsp">here</a> to view the chat room.</p> | |
| <p>Click <a href="index.html">here</a> to go back to the main page.</p> | |
| </body> | |
| </html> |