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<p class=MsoNormal>Hi,<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>For one of the reuirement we need to keep track of queue
depth and successfully processed messages. The idea is to publish messages and
get a list of successful and failed messages. To simulate the requirement I did
the following<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><b><span
style='mso-list:Ignore'>1)<span style='font:7.0pt "Times New Roman"'>
</span></span></b><![endif]>Publish the messages with Mandatory and Immediate
flag sent <b>channel.basicPublish 'exchange' ,'rKey',true,false,
props,"Hello World".bytes<o:p></o:p></b></p>
<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><b><span
style='mso-list:Ignore'>2)<span style='font:7.0pt "Times New Roman"'>
</span></span></b><![endif]>The consumer consumes even marked ( I have put
numbers from 1..10 as marked value in header of each messages) and does
not ACKS odd numbered messages.<b><o:p></o:p></b></p>
<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><b><span
style='mso-list:Ignore'>3)<span style='font:7.0pt "Times New Roman"'>
</span></span></b><![endif]>I have implemented setReturnListnere in the
publisher to capture undelivered messages.<b><o:p></o:p></b></p>
<p class=MsoListParagraph><o:p> </o:p></p>
<p class=MsoListParagraph>While am able to get the number of unack messages via
Rabbmitmqctl list_queues messages_unacknowledged, somehow my handleBasicReturn
method does not gets called. Am in missing something.<o:p></o:p></p>
<p class=MsoListParagraph><o:p> </o:p></p>
<p class=MsoListParagraph>Code snippets:<o:p></o:p></p>
<p class=MsoListParagraph><o:p> </o:p></p>
<p class=MsoListParagraph>Producer:<o:p></o:p></p>
<p class=MsoListParagraph><b>channel.setReturnListener(new ReturnListener() {<o:p></o:p></b></p>
<p class=MsoListParagraph><b> public
void handleBasicReturn(int replyCode, <o:p></o:p></b></p>
<p class=MsoListParagraph><b> String
replyText, <o:p></o:p></b></p>
<p class=MsoListParagraph><b> String
exchange, <o:p></o:p></b></p>
<p class=MsoListParagraph><b> String
routingKey, <o:p></o:p></b></p>
<p class=MsoListParagraph><b> AMQP.BasicProperties
properties, <o:p></o:p></b></p>
<p class=MsoListParagraph><b> byte[]
body) <o:p></o:p></b></p>
<p class=MsoListParagraph><b>
throws IOException {<o:p></o:p></b></p>
<p class=MsoListParagraph><b> println
"Debugging messages!!!!"<o:p></o:p></b></p>
<p class=MsoListParagraph><b>
println "The details of returned messages are ${replyText} from
${exchange} with routingKey as ${routingKey} with properties"<o:p></o:p></b></p>
<p class=MsoListParagraph><b> }<o:p></o:p></b></p>
<p class=MsoListParagraph><b> });<o:p></o:p></b></p>
<p class=MsoListParagraph><b><o:p> </o:p></b></p>
<p class=MsoListParagraph><b>println " queuename is ${dec.queue} and
consumerCount is ${dec.consumerCount} messageCount is ${dec.messageCount}"<o:p></o:p></b></p>
<p class=MsoListParagraph><b> (1..10).each
{<o:p></o:p></b></p>
<p class=MsoListParagraph><b> println
"Sending file ${i}....."<o:p></o:p></b></p>
<p class=MsoListParagraph><b> def
headers = new HashMap<String,Object>()<o:p></o:p></b></p>
<p class=MsoListParagraph><b> headers.put
"operatiion","scp"<o:p></o:p></b></p>
<p class=MsoListParagraph><b> headers.put
"dest","joker.dk.mach.com"<o:p></o:p></b></p>
<p class=MsoListParagraph><b> headers.put
"id", i<o:p></o:p></b></p>
<p class=MsoListParagraph><b> println
headers<o:p></o:p></b></p>
<p class=MsoListParagraph><b><o:p> </o:p></b></p>
<p class=MsoListParagraph><b> BasicProperties
props = new BasicProperties(null, null, headers, null, null, null, null,
null,null, null, null, null,null, null)<o:p></o:p></b></p>
<p class=MsoListParagraph><b> channel.basicPublish
'exchange' ,'rKey',true,false, props,"Hello Worls".bytes <o:p></o:p></b></p>
<p class=MsoListParagraph><b> i++ <o:p></o:p></b></p>
<p class=MsoListParagraph><b> }<o:p></o:p></b></p>
<p class=MsoListParagraph><b>channel.close()<o:p></o:p></b></p>
<p class=MsoListParagraph><b><o:p> </o:p></b></p>
<p class=MsoListParagraph><b>Consumer:<o:p></o:p></b></p>
<p class=MsoListParagraph><b>while (true) {<o:p></o:p></b></p>
<p class=MsoListParagraph><b> def
delivery = consumer.nextDelivery()<o:p></o:p></b></p>
<p class=MsoListParagraph><b> def
headers = delivery?.properties?.headers<o:p></o:p></b></p>
<p class=MsoListParagraph><b> def
id = headers.get("id")<o:p></o:p></b></p>
<p class=MsoListParagraph><b> println "Received
message:"<o:p></o:p></b></p>
<p class=MsoListParagraph><b> println
" ${id.toString()}"<o:p></o:p></b></p>
<p class=MsoListParagraph><b><o:p> </o:p></b></p>
<p class=MsoListParagraph><b> if(
id % 2 == 0){<o:p></o:p></b></p>
<p class=MsoListParagraph><b> channel.basicAck
delivery.envelope.deliveryTag, false <o:p></o:p></b></p>
<p class=MsoListParagraph><b> }
<o:p></o:p></b></p>
<p class=MsoListParagraph><b>}<o:p></o:p></b></p>
<p class=MsoListParagraph><b><o:p> </o:p></b></p>
<p class=MsoListParagraph>Regds<o:p></o:p></p>
<p class=MsoListParagraph>Pras<o:p></o:p></p>
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