Image API Creation

ImageAPI.xml

<?xml version="1.0" encoding="UTF-8"?>
<api context="/image" name="ImageAPI" xmlns="http://ws.apache.org/ns/synapse">
    <resource methods="POST" uri-template="/add">
        <inSequence>
            <log level="full" />
            <!--
                1. Reading the JSON attributes from the request payload;
            -->
            <property expression="json-eval($.fileName)" name="fileName" scope="default" type="STRING"/>
            <property expression="json-eval($.fileContent)" name="fileContent" scope="default" type="STRING"/>
            <!--
                2. Creating the Payload for a binary payload.
            -->
            <payloadFactory media-type="xml">
                <format>
                    <ns:binary xmlns:ns="http://ws.apache.org/commons/ns/payload">$1</ns:binary>
                </format>
                <args>
                    <arg evaluator="xml" expression="$ctx:fileContent"/>
                </args>
            </payloadFactory>
            <!--
                3. Even using a binary payload, the Axis2 frameworks keeps considering the payload as text.
                We use a script mediator to set the fist node as binary;
            -->
            <script language="js"><![CDATA[var binaryNode =       
      mc.getEnvelope().getBody().getFirstElement().getFirstOMChild();  
   binaryNode.setBinary(true);]]></script>
            <log level="full" >
            	<property name="fileName" expression="$ctx:fileName"></property>
            </log>
         <!--
            4. We set the name of the file that will be saved in the disk using a VFS parameter
         -->
         <property name="transport.vfs.ReplyFileName" expression="$ctx:fileName" scope="transport"/>
         <log level="full">
            <property name="fileName" expression="$ctx:fileName"/>
         </log>
         <!--
            5. We need to set the OUT_ONLY property and remove the REST_URL_POSTFIX to make the API to be able to save the file
            and set the expected file name.
         -->
         <property name="OUT_ONLY" value="true"/>
         <property name="REST_URL_POSTFIX" scope="axis2" action="remove"/>
         <!--
            6. We use the call mediator in order to invoke a vfs endpoint with the target directory.
         -->
         <property name="messageType" value="application/octet-stream" scope="axis2"/>
         <call>
            <endpoint>
               <address uri="vfs:file:///E:/test/"/>
            </endpoint>
         </call>
         <!--
            7. We define a success message to be the respose of the REST API request.
         -->
         <payloadFactory media-type="json">
            <format>
                {                
                    "status": "success",                
                    "statusMessage" : "Image Uploaded"               
                }            
             </format>
            <args/>
         </payloadFactory>
         <respond/>
        </inSequence>
        <outSequence/>
        <faultSequence/>
    </resource>
</api>

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