Storm topology submitted to the cluster

Question: How will topology be submitted to the cluster after the definition of each component (written **spout.java and **bolt.java) is completed topology?

Reference: http://www.cnblogs.com/fxjwind/archive/2013/06/05/3119056.html

1, the Topology object is created by Topologybuilder.createtopology () after the main method Setspout, Setbolt in **topology.java, and in the * * The main method of topology is submitted by using the following code:

Stormsubmitter.submittopology (Args[0], conf, builder.createtopology ());

2, in the Submittopology method of Stormsubmitter.java, Sir into a Nimbusclient object, and then execute the Submitjar (,,) method to commit

Nimbusclient client = nimbusclient.getconfiguredclient (conf); Submitjar (conf, progresslistener);

3, in the Submitjar method (only two parameters), first obtain the address of the jar file to be committed (represented by a string object), and then call Submitjar (,,,) to commit. Here we first determine whether the topology has been submitted

private static void Submitjar (Map conf, Progresslistener Listener) {
if (submittedjar==null) {
Log.info ("Jar not uploaded to master yet. Submitting jar ... ");
String Localjar = System.getproperty ("Storm.jar");
Submittedjar = Submitjar (conf, Localjar, listener);
} else {
Log.info ("Jar already uploaded to master. Not submitting jar. ");
}
}

4, in Submitjar (,,,), first generate a nimbusclient to obtain the destination address of the commit JAR file. Stormsubmitter is a thrift Client,nimbus is a thrift Server that sends a JAR file via RPC to nimubs through the following three steps

Returns a string submittedjar after execution of the method, marking whether the topology has been committed. This parameter is used as the submittopologywithopts () parameter in the 5th step

String uploadlocation = Client.getclient (). Beginfileupload ();

Client.getclient (). Uploadchunk (Uploadlocation, Bytebuffer.wrap (Tosubmit));

Client.getclient (). Finishfileupload (uploadlocation);

The classes in the Backtype.storm.utils Toolkit are used Bufferfileinputstream.java

5, this returns to the Submittopology method of Stormsubmitter.java, which executes

if (opts!=null) {       

Else {         // This was for backwards compatibility         client.getclient (). Submittopology ( Name, Submittedjar, serconf, topology);

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Take a look at the method called in the 5th step, the public class Nimbusclient extends thriftclient the fact that the submission process is encapsulated by the thrift.

Reference: http://www.cnblogs.com/fxjwind/archive/2013/06/04/3117385.html

 Public void throws alreadyaliveexception, invalidtopologyexception, Org.apache.thrift.TException    {      send_submittopologywithopts (name, Uploadedjarlocation, jsonconf, topology, options);      Recv_submittopologywithopts ();    }

 Public void throws org.apache.thrift.TException    {      new  Submittopologywithopts_args ();      Args.set_name (name);      Args.set_uploadedjarlocation (uploadedjarlocation);      Args.set_jsonconf (jsonconf);      Args.set_topology (topology);      Args.set_options (options);      Sendbase ("submittopologywithopts", args);    }

Storm topology submitted to the cluster