Hello,
I have a multibus scenario (POC) to learn about a number of features
related to using camel.
In the current scenario I like a consumer to upload a file (over http) to my
first bus (my local camel instance), this bus proxies the request to a
second bus (my global routing bus). This second (global routing) bus knows
where the provider is located and sends it to the local bus of the provider
where the provider receives it. All this seems to work fine, see my config
snapshots below:
My problem:
Currently when my provider is not running, the consumer request won't stay
queued. I guess because of [route 3] will keep reading the jms queue and
keeps bridging the messages to the provider which isn't there.
I Guess it should only read from jms on request, but I don't know how to
read jms on http request.
When I remove [route 3] from my global bus the request seems to stay queued.
And when I add [route 3] to my provider, all seems to work ok. But, I don't
want my provider to connect directly to the jms queue of the global routing
bus, all traffic should be routed through the local bus.
Question:
How can I rewrite [route 3], [route 4] and [route 5] so:
- when I start my provider, it will ask it's local bus for requests [route
5];
- the local bus will (on request) ask the global bus for requests [route 4];
- the global bus will read the jms queue when the request from local bus is
received [route 3];
Of course any other hints / solutions are appreciated !
## camel context 1 - local bus of consumer ##
<!-- [route 1] local bus of the consumer, this will proxy http request to
second (global) bus -->
<route>
<from
uri="jetty:http://0.0.0.0:8101/clipboard?matchOnUriPrefix=true"; />
<to
uri="http://0.0.0.0:8201?throwExceptionOnFailure=false&bridgeEndpoint=true";
/>
</route>
## camel context 2 - global routing bus##
<!-- [route 2] remote (global) bus config snapshot, this will publish the
http request to a jms queue -->
<route>
<from uri="jetty:http://0.0.0.0:8201/clipboard/upload"/>
<to uri="jms:queue:uploads?disableReplyTo=true" async="true"/>
</route>
<!-- [route 3] remote (global) bus config snapshot, this will read the jms
queue and bridge it to the local bus of the provider -->
<route>
<from uri="jms:queue:uploads?transacted=true"/>
<to
uri="http://0.0.0.0:8102?throwExceptionOnFailure=false&bridgeEndpoint=true"/>
</route>
## camel context 4 - local bus of provider ##
<!-- [route 4] local bus of the provider, forwared the request to the
provider -->
<route>
<from
uri="jetty:http://0.0.0.0:8102/clipboard?matchOnUriPrefix=true"; />
<to
uri="http://0.0.0.0:9101?throwExceptionOnFailure=false&bridgeEndpoint=true";
/>
</route>
## camel context 5 - provider ##
<!-- [route 5] my provider -->
<route>
<from uri="jetty:http://0.0.0.0:9101/clipboard/upload"/>
<to uri="bean:clipboardBean?method=upload" />
</route>
Best regards,
Raymond Domingo
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