modules/documentation/src/site/xdoc/userguide/samples/sample703.xml - synapse - Git at Google

 <?xml version="1.0" encoding="ISO-8859-1" ?>
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 <document>
     <properties>
         <title>Apache Synapse - Sample 703</title>
     </properties>
     <body>
         <section name="Sample 703: Introduction to Message Resequencing Processor">
             <div class="xmlConf"><![CDATA[<definitions xmlns="http://ws.apache.org/ns/synapse">

     <sequence name="next_seq">
       <send>
 		  <endpoint>
 			  <address uri="http://localhost:9000/services/SimpleStockQuoteService">
 				  <suspendOnFailure>
 					  <errorCodes>-1</errorCodes>
 					  <progressionFactor>1.0</progressionFactor>
 				  </suspendOnFailure>
 			  </address>
 		  </endpoint>
       </send>
     </sequence>

 	<sequence name="main">
         <in>
 			<log level="full"/>
 			<property name="FORCE_SC_ACCEPTED" value="true" scope="axis2"/>
 			<property name="OUT_ONLY" value="true"/>
 			<store messageStore="MyStore"/>
         </in>
 		<out>
 		    <send />
 		</out>
         <description>The main sequence for the message mediation</description>
 	</sequence>

     <messageStore name="MyStore"/>

 	<messageProcessor
             class="org.apache.synapse.message.processors.resequence.ResequencingProcessor"
             name="ResequencingProcessor" messageStore="MyStore">

 		<parameter name="interval">10000</parameter>
 		<parameter name="seqNumXpath" xmlns:m0="http://services.samples" expression="substring-after(//m0:placeOrder/m0:order/m0:symbol,'-')"/>
 		<parameter name="nextEsbSequence">next_seq</parameter>

 	</messageProcessor>

 </definitions>]]></div>
             <subsection name="Objective">
                 <p>
                     Introduction to Message Resequencing Processor
                 </p>
             </subsection>
             <subsection name="Pre-requisites">
                 <p>
                     <ul>
                         <li>
                             Deploy the SimpleStockQuoteService in the sample Axis2 server and start Axis2
                         </li>
                         <li>
                             Start Synapse using the configuration numbered 703 (repository/conf/sample/synapse_sample_703.xml)
                             <div class="command">
                                 Unix/Linux: sh synapse.sh -sample 703<br/>
                                 Windows: synapse.bat -sample 703
                             </div>
                         </li>
                     </ul>
                 </p>
             </subsection>
             <subsection name="Executing the Client">
                 <p>
                     Execute the Client with commands :
                 </p>
                 <div class="command">ant stockquote -Dtrpurl=http://localhost:8280/ -Dmode=placeorder -Dsymbol=WSO2-2<br/>
 									ant stockquote -Dtrpurl=http://localhost:8280/ -Dmode=placeorder -Dsymbol=WSO2-3<br/>
 									ant stockquote -Dtrpurl=http://localhost:8280/ -Dmode=placeorder -Dsymbol=WSO2-1
                 </div>
 				<p>
                     You have to use different sequence numbers for WSO2-#. According to configuration
 					sequence number should be seperated with a hyphen mark.
                 </p>
                 <p>
                     When you execute the client the message will be dispatched to the main sequence.
                     In the Main sequence store mediator will store the placeOrder request message in
                     the 'MyStore' message store.
                 </p>
                 <p>
                     Message Processor will consume the messages and forward to the 'next_seq' sequence
                     according to sequence number order.
                 </p>
 				<p>
                     You will see that the Axis2 server has recieved the messages in sequence number order
                 </p>
                 <p>
                     Following logic is used to decide the initial sequence number.
 					<ol>
 						<li>When starting Synapse Resequencing Processor checks the attached message store for any messages.
 						If any messages found, select the minimum sequence number as the initial sequence number. Else continue without selecting initial sequence number.</li>
 						<li>If initial sequence number is selected at the start up, continue sending messages to the given sequence.
 						Otherwise waits for required number of messages to come with in a certain timeout.</li>
 						<li>If the required number of messages are received, select initial sequence number from those and do further resequencing.
 						If required number of messages are not received with in timeout, select the initial sequence number from available messages in the store.</li>
 					</ol>
                 </p>
             </subsection>
         </section>
         <p>
             <a href="../samples.html">Back to Catalog</a>
         </p>
     </body>
 </document>
	<?xml version="1.0" encoding="ISO-8859-1" ?>
	<!--
	~ Licensed to the Apache Software Foundation (ASF) under one
	~ or more contributor license agreements. See the NOTICE file
	~ distributed with this work for additional information
	~ regarding copyright ownership. The ASF licenses this file
	~ to you under the Apache License, Version 2.0 (the
	~ "License"); you may not use this file except in compliance
	~ with the License. You may obtain a copy of the License at
	~
	~ http://www.apache.org/licenses/LICENSE-2.0
	~
	~ Unless required by applicable law or agreed to in writing,
	~ software distributed under the License is distributed on an
	~ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
	~ KIND, either express or implied. See the License for the
	~ specific language governing permissions and limitations
	~ under the License.
	-->

	<document>
	<properties>
	<title>Apache Synapse - Sample 703</title>
	</properties>
	<body>
	<section name="Sample 703: Introduction to Message Resequencing Processor">
	<div class="xmlConf"><![CDATA[<definitions xmlns="http://ws.apache.org/ns/synapse">

	<sequence name="next_seq">
	<send>
	<endpoint>
	<address uri="http://localhost:9000/services/SimpleStockQuoteService">
	<suspendOnFailure>
	<errorCodes>-1</errorCodes>
	<progressionFactor>1.0</progressionFactor>
	</suspendOnFailure>
	</address>
	</endpoint>
	</send>
	</sequence>

	<sequence name="main">
	<in>
	<log level="full"/>
	<property name="FORCE_SC_ACCEPTED" value="true" scope="axis2"/>
	<property name="OUT_ONLY" value="true"/>
	<store messageStore="MyStore"/>
	</in>
	<out>
	<send />
	</out>
	<description>The main sequence for the message mediation</description>
	</sequence>

	<messageStore name="MyStore"/>

	<messageProcessor
	class="org.apache.synapse.message.processors.resequence.ResequencingProcessor"
	name="ResequencingProcessor" messageStore="MyStore">

	<parameter name="interval">10000</parameter>
	<parameter name="seqNumXpath" xmlns:m0="http://services.samples" expression="substring-after(//m0:placeOrder/m0:order/m0:symbol,'-')"/>
	<parameter name="nextEsbSequence">next_seq</parameter>

	</messageProcessor>

	</definitions>]]></div>
	<subsection name="Objective">
	<p>
	Introduction to Message Resequencing Processor
	</p>
	</subsection>
	<subsection name="Pre-requisites">
	<p>
	<ul>
	<li>
	Deploy the SimpleStockQuoteService in the sample Axis2 server and start Axis2
	</li>
	<li>
	Start Synapse using the configuration numbered 703 (repository/conf/sample/synapse_sample_703.xml)
	<div class="command">
	Unix/Linux: sh synapse.sh -sample 703<br/>
	Windows: synapse.bat -sample 703
	</div>
	</li>
	</ul>
	</p>
	</subsection>
	<subsection name="Executing the Client">
	<p>
	Execute the Client with commands :
	</p>
	<div class="command">ant stockquote -Dtrpurl=http://localhost:8280/ -Dmode=placeorder -Dsymbol=WSO2-2<br/>
	ant stockquote -Dtrpurl=http://localhost:8280/ -Dmode=placeorder -Dsymbol=WSO2-3<br/>
	ant stockquote -Dtrpurl=http://localhost:8280/ -Dmode=placeorder -Dsymbol=WSO2-1
	</div>
	<p>
	You have to use different sequence numbers for WSO2-#. According to configuration
	sequence number should be seperated with a hyphen mark.
	</p>
	<p>
	When you execute the client the message will be dispatched to the main sequence.
	In the Main sequence store mediator will store the placeOrder request message in
	the 'MyStore' message store.
	</p>
	<p>
	Message Processor will consume the messages and forward to the 'next_seq' sequence
	according to sequence number order.
	</p>
	<p>
	You will see that the Axis2 server has recieved the messages in sequence number order
	</p>
	<p>
	Following logic is used to decide the initial sequence number.
	<ol>
	<li>When starting Synapse Resequencing Processor checks the attached message store for any messages.
	If any messages found, select the minimum sequence number as the initial sequence number. Else continue without selecting initial sequence number.</li>
	<li>If initial sequence number is selected at the start up, continue sending messages to the given sequence.
	Otherwise waits for required number of messages to come with in a certain timeout.</li>
	<li>If the required number of messages are received, select initial sequence number from those and do further resequencing.
	If required number of messages are not received with in timeout, select the initial sequence number from available messages in the store.</li>
	</ol>
	</p>
	</subsection>
	</section>
	<p>
	<a href="../samples.html">Back to Catalog</a>
	</p>
	</body>
	</document>