gistfile1.xml

<flow name="authorize" doc:name="authorize">
    <http:inbound-endpoint exchange-pattern="request-response"
	host="localhost" port="8081" path="authorize" />
		
    <google-spreadsheets:authorize config-ref="google-spreadsheets" state="#[message.inboundProperties['user']]"/>
        
    <scripting:transformer>
        <scripting:script engine="Groovy">
            <scripting:text><![CDATA[
                org.mule.examples.google.sfdc2google.UserIdMapping mapping = new org.mule.examples.google.sfdc2google.UserIdMapping();

                mapping.setUserId(message.getInboundProperty("state"));
                mapping.setGoogleId(message.getInvocationProperty("OAuthAccessTokenId"));

                message.setPayload(mapping);

                return message;]]>
            </scripting:text>
        </scripting:script>
    </scripting:transformer>

    <objectstore:store
                config-ref="ObjectStore"
                key="#[message.inboundProperties['state']]"
                value-ref="#[payload]"
                overwrite="true"/>

	<sfdc:authorize display="PAGE" config-ref="Salesforce" state="#[message.inboundProperties['state']]" />
		
	<objectstore:retrieve config-ref="ObjectStore" key="#[message.inboundProperties['state']]" />
    <scripting:transformer>
        <scripting:script engine="Groovy">
            <scripting:text><![CDATA[
                org.mule.examples.google.sfdc2google.UserIdMapping mapping = message.getPayload();
                mapping.setSfdcId(message.getInvocationProperty("OAuthAccessTokenId"));

                return message;]]>
            </scripting:text>
        </scripting:script>
    </scripting:transformer>
    
    <objectstore:store
                config-ref="ObjectStore"
                key="#[message.inboundProperties['state']]"
                value-ref="#[payload]"
                overwrite="true"/>
</flow>