## Apache Synapse

## Sample 158: Exposing a SOAP service over JSON

<definitions xmlns="http://ws.apache.org/ns/synapse"> <proxy name="JSONProxy" transports="http https"> <target> <endpoint> <address uri="http://localhost:9000/services/SimpleStockQuoteService" format="soap11"/> </endpoint> <inSequence> <log level="full"/> <xslt key="in_transform"/> </inSequence> <outSequence> <log level="full"/> <xslt key="out_transform"/> <send/> </outSequence> </target> </proxy> <localEntry key="in_transform"> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:fn="http://www.w3.org/2005/02/xpath-functions" xmlns:m0="http://services.samples" version="2.0" exclude-result-prefixes="m0 fn"> <xsl:output method="xml" omit-xml-declaration="yes" indent="yes"/> <xsl:template match="*"> <xsl:element name="{local-name()}" namespace="http://services.samples"> <xsl:copy-of select="attribute::*"/> <xsl:apply-templates/> </xsl:element> </xsl:template> </xsl:stylesheet> </localEntry> <localEntry key="out_transform"> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0"> <xsl:output method="xml" version="1.0" encoding="UTF-8"/> <xsl:template match="*"> <xsl:element name="{local-name()}"> <xsl:apply-templates/> </xsl:element> </xsl:template> </xsl:stylesheet> </localEntry> </definitions>

### Objective

Demonstrate the ability to switch between JSON and XML/SOAP content interchange formats

### Pre-requisites

- Deploy the SimpleStockQuoteService in the sample Axis2 server and start Axis2
- Start Synapse using the configuration numbered 158 (repository/conf/sample/synapse_sample_158.xml)
  Unix/Linux: sh synapse.sh -sample 158
  Windows: synapse.bat -sample 158

### Executing the Client

ant jsonclient -Daddurl=http://localhost:9000/services/SimpleStockQuoteService -Dtrpurl=http://localhost:8280/services/JSONProxy

JSON client will send a stockquote request to Synapse using the JSON content interchange format. Synapse will transform it into a SOAP request and forward to the Axis2 server. The SOAP response from the Axis2 server will be converted into a JSON message and sent back to the JSON client.

You may use a tool like TCPMon to monitor the JSON requests sent over the wire. A sample JSON request and response is shown below:

{"getQuote":{"request":{"symbol":"IBM"}}}
{"getQuoteResponse":{"return":{"change":3.853593376681722,"earnings":12.802850763714854,"high":67.92488310190126,"last":66.14619264746406,"lastTradeTimestamp":"Mon Aug 23 16:48:40 IST 2010","low":-66.04000424423522,"marketCap":-9334516.42324327,"name":"IBM Company","open":-64.61950137150009,"peRatio":-19.78600441437058,"percentageChange":5.411779328273005,"prevClose":71.2075112994578,"symbol":"IBM","volume":16842}}}

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