WSo2: Rabbitmq is it possible to requeue from sequence without proxy - wso2

Question

I am working on simple Wso2 RabbitMQ integration. My inbound endpoints consume the message and send it to the sequence. The sequence then stores the message. Another on failure sequence currently logging the error. I am trying to send the message on the queue again from the sequence.
SalesOrderQueueInboundEP
<?xml version="1.0" encoding="UTF-8"?>
<inboundEndpoint name="SalesOrderQueueInboundEP" onError="SalesOrderQueueErrorSeq" protocol="rabbitmq" sequence="SalesOrderQueueProcessSeq" suspend="false" xmlns="http://ws.apache.org/ns/synapse">
<parameters>
<parameter name="sequential">true</parameter>
<parameter name="coordination">true</parameter>
<parameter name="rabbitmq.connection.factory">AMQPConnectionFactory</parameter>
<parameter name="rabbitmq.server.host.name">localhost</parameter>
<parameter name="rabbitmq.server.port">5672</parameter>
<parameter name="rabbitmq.server.user.name">guest</parameter>
<parameter name="rabbitmq.server.password">guest</parameter>
<parameter name="rabbitmq.queue.name">SalesOrderQueue</parameter>
<parameter name="rabbitmq.exchange.name">amq.direct</parameter>
<parameter name="rabbitmq.message.content.type">application/xml</parameter>
</parameters>
</inboundEndpoint>
SalesOrderQueueProcessSeq
<?xml version="1.0" encoding="UTF-8"?>
<sequence name="SalesOrderQueueProcessSeq" trace="disable" xmlns="http://ws.apache.org/ns/synapse">
<log description="Log payload" level="full"/>
<property expression="json-eval($)" name="body_json_property" scope="default" type="STRING"/>
<sequence key="SalesDBSeq"/>
</sequence>
SalesOrderQueueErrorSeq
<?xml version="1.0" encoding="UTF-8"?>
<sequence name="SalesOrderQueueErrorSeq" trace="disable" xmlns="http://ws.apache.org/ns/synapse">
<log description="Log error details in case of failure" level="full">
<property name="MESSAGE" value="An unexpected error occurred."/>
<property expression="$ctx:SYNAPSE_REST_API" name="REST_API"/>
<property expression="$ctx:ERROR_CODE" name="ERROR_CODE"/>
<property expression="$ctx:ERROR_MESSAGE" name="ERROR_MESSAGE"/>
<property expression="$ctx:ERROR_DETAIL" name="ERROR_DETAIL"/>
<property expression="$ctx:ERROR_EXCEPTION" name="ERROR_EXCEPTION"/>
</log>
</sequence>

Answer 1

#NMRhman,
I believe that you need to roll back the transaction if the messages go to the error sequence.
Can you add the following to the inbound sequence?
<parameter name="rabbitmq.queue.auto.ack">false</parameter>
<parameter name="rabbitmq.queue.auto.delete">false</parameter>
Also, add the following property which instructs to rollback the message in the error sequence.
<property name="SET_ROLLBACK_ONLY" value="true" scope="default" type="STRING"/>
Modified sequences as follows.
SalesOrderQueueInboundEP
<?xml version="1.0" encoding="UTF-8"?>
<inboundEndpoint name="SalesOrderQueueInboundEP" onError="SalesOrderQueueErrorSeq" protocol="rabbitmq" sequence="SalesOrderQueueProcessSeq" suspend="false" xmlns="http://ws.apache.org/ns/synapse">
<parameters>
<parameter name="sequential">true</parameter>
<parameter name="coordination">true</parameter>
<parameter name="rabbitmq.connection.factory">AMQPConnectionFactory</parameter>
<parameter name="rabbitmq.server.host.name">localhost</parameter>
<parameter name="rabbitmq.server.port">5672</parameter>
<parameter name="rabbitmq.server.user.name">guest</parameter>
<parameter name="rabbitmq.server.password">guest</parameter>
<parameter name="rabbitmq.queue.name">SalesOrderQueue</parameter>
<parameter name="rabbitmq.queue.auto.ack">false</parameter>
<parameter name="rabbitmq.queue.auto.delete">false</parameter>
<parameter name="rabbitmq.exchange.name">amq.direct</parameter>
<parameter name="rabbitmq.message.content.type">application/xml</parameter>
</parameters>
</inboundEndpoint>
SalesOrderQueueErrorSeq
<?xml version="1.0" encoding="UTF-8"?>
<sequence name="SalesOrderQueueErrorSeq" trace="disable" xmlns="http://ws.apache.org/ns/synapse">
<log description="Log error details in case of failure" level="full">
<property name="MESSAGE" value="An unexpected error occurred."/>
<property expression="$ctx:SYNAPSE_REST_API" name="REST_API"/>
<property expression="$ctx:ERROR_CODE" name="ERROR_CODE"/>
<property expression="$ctx:ERROR_MESSAGE" name="ERROR_MESSAGE"/>
<property expression="$ctx:ERROR_DETAIL" name="ERROR_DETAIL"/>
<property expression="$ctx:ERROR_EXCEPTION" name="ERROR_EXCEPTION"/>
</log>
<property name="SET_ROLLBACK_ONLY" value="true" scope="default" type="STRING"/>
<drop/>
</sequence>
Please try the above and share your feedback.