WSO2 API Multipart Content Type. Attach String or attachments and store to the WSO2 filesystem.

MultipartAPI.xml

<?xml version="1.0" encoding="UTF-8"?>
<api context="/multi" name="MultipartAPI" xmlns="http://ws.apache.org/ns/synapse">
    <resource methods="POST">
        <inSequence>
            <property name="messageType" scope="axis2" type="STRING" value="multipart/form-data" />
            <property name="attachment_base64" expression="//mediate/attachment"></property>
            <property name="attachment_filename" expression="//mediate/attachment/@filename"></property>
            <log level="custom">
                <property name="full_name" expression="//mediate/full_name/text()"></property>
                <property name="attachment_filename" expression="//mediate/attachment/@filename"></property>
                <!--<property name="attachment_base64" expression="//mediate/attachment"></property>-->
            </log>
            <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:attachment_base64" />
                </args>
            </payloadFactory>
            <script language="js">
                <![CDATA[
                    var binaryNode = mc.getEnvelope().getBody().getFirstElement().getFirstOMChild();  
                    binaryNode.setBinary(true);
                ]]>
            </script>
            <property name="transport.vfs.ReplyFileName" expression="$ctx:attachment_filename" scope="transport" />
            <property name="transport.vfs.Streaming" value="true" scope="transport" />
            <property name="OUT_ONLY" value="true" />
            <property name="ClientApiNonBlocking" action="remove" scope="axis2" />
            <property name="messageType" value="application/binary" scope="axis2" />
            <call>
                <endpoint>
                    <address uri="vfs:file:///home/wso2carbon/attachments/"></address>
                </endpoint>
            </call>
            <payloadFactory media-type="xml">
                <format>
                    <Response>
                        <Message>Attachment has been uploaded.</Message>
                    </Response>
                </format>
                <args></args>
            </payloadFactory>
            <respond />
        </inSequence>
        <outSequence>
            <send />
        </outSequence>
        <faultSequence />
    </resource>
</api>