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From "Christopher L. Shannon (Confluence)" <conflue...@apache.org>
Subject [CONF] Apache ActiveMQ > Delay and Schedule Message Delivery
Date Thu, 15 Oct 2015 13:31:11 GMT
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collapse; vertical-align: top; width: 32px; padding-right: 9px"><a href="https://cwiki.apache.org/confluence/display/~cshannon?src=mail&amp;src.mail.timestamp=1444915870785&amp;src.mail.notification=com.atlassian.confluence.plugins.confluence-content-notifications-plugin%3Apage-edited-notification&amp;src.mail.recipient=8aa980874e36a1eb014e36a2a6263ca9"
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vertical-align: middle; font-family: Arial, sans-serif; font-size: 14px; line-height: 20px;
mso-line-height-rule: exactly; mso-text-raise: 1px">Christopher L. Shannon <strong>edited</strong>
a page</td> 
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exactly"><a href="https://cwiki.apache.org/confluence/display/ACTIVEMQ/Delay+and+Schedule+Message+Delivery?src=mail&amp;src.mail.timestamp=1444915870785&amp;src.mail.notification=com.atlassian.confluence.plugins.confluence-content-notifications-plugin%3Apage-edited-notification&amp;src.mail.recipient=8aa980874e36a1eb014e36a2a6263ca9&amp;src.mail.action=view"
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title="Delay and Schedule Message Delivery" style="color: #3b73af; text-decoration: none">Delay
and Schedule Message Delivery</a></span></td> 
</tr> 
</tbody> 
</table> </td> 
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border-left: 1px solid #ccc; border-right: 1px solid #ccc; border-top: 0; border-bottom: 0;
padding: 0 15px 15px 16px; background-color: #fff"> 
<table class="content-excerpt-pattern" cellspacing="0" cellpadding="0" border="0" width="100%"
style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; color: #333;
font-family: Arial, sans-serif; font-size: 14px; line-height: 20px; mso-line-height-rule:
exactly; mso-text-raise: 1px"> 
<tbody> 
<tr> 
<td class="content-excerpt-pattern-container mobile-resize-text " style="padding: 0px;
border-collapse: collapse; padding: 0 0 0 24px"> <p class="diff-block-target diff-block-context"
style="margin: 10px 0 0 0; margin-top: 0">ActiveMQ from version <strong>5.4</strong>
has an optional persistent scheduler built into the ActiveMQ message broker. It is enabled
by setting the broker <strong>schedulerSupport</strong> attribute to true in the
<a href="/confluence/pages/viewpage.action?pageId=35879" style="color: #3b73af; text-decoration:
none"><span class="diff-html-removed" id="removed-diff-0" style="font-size: 100%; background-color:
#ffe7e7; text-decoration: line-through;">xml configuration</span></a><span
class="diff-html-added" style="font-size: 100%; background-color: #ddfade;"> </span><a
href="/confluence/pages/viewpage.action?pageId=35879" style="color: #3b73af; text-decoration:
none"><span class="diff-html-added" id="added-diff-0" style="font-size: 100%; background-color:
#ddfade;">Xml Configuration</span></a>. <br> An ActiveMQ client can take
advantage of a delayed delivery by using the following message properties:</p> 
<table class="diff-macro diff-html-added diff-block-target" style="background-color: #f0f0f0;border:
1px solid #dddddd;margin: 10px 1px;padding: 0 2px 2px;width: 100%;background-color: #ddfade;border-color:
#93c49f;; border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; color:
#333"> 
<thead> 
<tr> 
<th class="diff-macro-title" style="background-color: transparent; text-align: left; font-weight:
normal;padding: 5px;"><span class="diff-html-added" id="added-diff-1" style="font-size:
100%; background-color: #ddfade;"><span class="icon macro-placeholder-icon" style="background-color:
;line-height: 20px;"><img src="https://cwiki.apache.org/confluence/s/en_GB/5982/f2b47fb3d636c8bc9fd0b11c0ec6d0ae18646be7.1/_/images/icons/macrobrowser/dropdown/note.png"
style="padding-right: 5px; vertical-align: text-bottom;"> </span>Note</span></th>

</tr> 
</thead> 
<tbody> 
<tr> 
<td class="diff-macro-properties" style="background-color: #fafafa; padding: 0 0 0 5px;
font-size: 12px; text-align: left;padding: 0; border: 1px solid #dddddd;; padding: 0px; border-collapse:
collapse"> 
<table style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt;
color: #333"> 
<tbody> 
<tr> 
<td style="background-color: #fafafa; padding: 0 0 0 5px; font-size: 12px; text-align:
left;; padding: 0px; border-collapse: collapse"><span class="diff-html-added" style="font-size:
100%; background-color: #ddfade;">title</span></td> 
<td style="background-color: #fafafa; padding: 0 0 0 5px; font-size: 12px; text-align:
left;; padding: 0px; border-collapse: collapse"><span class="diff-html-added" style="font-size:
100%; background-color: #ddfade;">Check your Message Properties</span></td>

</tr> 
</tbody> 
</table> </td> 
</tr> 
</tbody> 
<tbody> 
<tr> 
<td class="diff-macro-body" style="background-color: #fff;border: 1px solid #dddddd;padding:
10px;; padding: 0px; border-collapse: collapse"> <p style="margin: 10px 0 0 0; margin-top:
0"> <span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">The
message property </span><code style="font-family: monospace"><span class="diff-html-added"
style="font-size: 100%; background-color: #ddfade;">scheduledJobId&nbsp;</span></code><span
class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">is reserved
for use by the Job Scheduler. If this property is set before sending, the message will be
sent immediately and not scheduled. Also, </span><span><span class="diff-html-added"
style="font-size: 100%; background-color: #ddfade;">after a scheduled message is received,
the property </span></span><span><code style="font-family: monospace"><span
class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">scheduledJobId</span></code><span
class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">&nbsp;will
be set on the received message so </span></span><span class="diff-html-added"
style="font-size: 100%; background-color: #ddfade;">keep this in mind if using something
like a Camel Route which might automatically copy properties over when re-sending a message.</span>
</p> </td> 
</tr> 
</tbody> 
</table> 
<div class="table-wrap diff-block-context" style="margin: 10px 0 0 0; overflow-x: auto">

<table class="confluenceTable" style="border-collapse: collapse; border: 1px solid #ddd;;
border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; color: #333; border-collapse:
collapse; margin: 10px 0 0 0; overflow-x: auto; margin-top: 0"> 
<tbody> 
<tr> 
<th class="confluenceTh" style="border: 1px solid #DDD; padding: 5px 7px; min-width: 0.6em;
text-align: left; vertical-align: top;background-color: #F0F0F0; font-weight: bold;; border:
1px solid #ddd; padding: 7px 10px; vertical-align: top; text-align: left; background-color:
#f0f0f0; font-weight: bold"> <p style="margin: 10px 0 0 0; margin-top: 0; background-color:
#f0f0f0; font-weight: bold">Property name</p> </th> 
<th class="confluenceTh" style="border: 1px solid #DDD; padding: 5px 7px; min-width: 0.6em;
text-align: left; vertical-align: top;background-color: #F0F0F0; font-weight: bold;; border:
1px solid #ddd; padding: 7px 10px; vertical-align: top; text-align: left; background-color:
#f0f0f0; font-weight: bold"> <p style="margin: 10px 0 0 0; margin-top: 0; background-color:
#f0f0f0; font-weight: bold">type</p> </th> 
<th class="confluenceTh" style="border: 1px solid #DDD; padding: 5px 7px; min-width: 0.6em;
text-align: left; vertical-align: top;background-color: #F0F0F0; font-weight: bold;; border:
1px solid #ddd; padding: 7px 10px; vertical-align: top; text-align: left; background-color:
#f0f0f0; font-weight: bold"> <p style="margin: 10px 0 0 0; margin-top: 0; background-color:
#f0f0f0; font-weight: bold">description</p> </th> 
</tr> 
<tr> 
<td class="confluenceTd" style="border: 1px solid #DDD; padding: 5px 7px; min-width: 0.6em;
text-align: left; vertical-align: top;; padding: 0px; border-collapse: collapse; border: 1px
solid #ddd; padding: 7px 10px; vertical-align: top; text-align: left"> <p style="margin:
10px 0 0 0; margin-top: 0">AMQ_SCHEDULED_DELAY</p> </td> 
<td class="confluenceTd" style="border: 1px solid #DDD; padding: 5px 7px; min-width: 0.6em;
text-align: left; vertical-align: top;; padding: 0px; border-collapse: collapse; border: 1px
solid #ddd; padding: 7px 10px; vertical-align: top; text-align: left"> <p style="margin:
10px 0 0 0; margin-top: 0">long</p> </td> 
<td class="confluenceTd" style="border: 1px solid #DDD; padding: 5px 7px; min-width: 0.6em;
text-align: left; vertical-align: top;; padding: 0px; border-collapse: collapse; border: 1px
solid #ddd; padding: 7px 10px; vertical-align: top; text-align: left"> <p style="margin:
10px 0 0 0; margin-top: 0">The time in milliseconds that a message will wait before being
scheduled to be delivered by the broker</p> </td> 
</tr> 
<tr> 
<td class="confluenceTd" style="border: 1px solid #DDD; padding: 5px 7px; min-width: 0.6em;
text-align: left; vertical-align: top;; padding: 0px; border-collapse: collapse; border: 1px
solid #ddd; padding: 7px 10px; vertical-align: top; text-align: left"> <p style="margin:
10px 0 0 0; margin-top: 0">AMQ_SCHEDULED_PERIOD</p> </td> 
<td class="confluenceTd" style="border: 1px solid #DDD; padding: 5px 7px; min-width: 0.6em;
text-align: left; vertical-align: top;; padding: 0px; border-collapse: collapse; border: 1px
solid #ddd; padding: 7px 10px; vertical-align: top; text-align: left"> <p style="margin:
10px 0 0 0; margin-top: 0">long</p> </td> 
<td class="confluenceTd" style="border: 1px solid #DDD; padding: 5px 7px; min-width: 0.6em;
text-align: left; vertical-align: top;; padding: 0px; border-collapse: collapse; border: 1px
solid #ddd; padding: 7px 10px; vertical-align: top; text-align: left"> <p style="margin:
10px 0 0 0; margin-top: 0">The time in milliseconds to wait after the start time to wait
before scheduling the message again</p> </td> 
</tr> 
<tr> 
<td class="confluenceTd" style="border: 1px solid #DDD; padding: 5px 7px; min-width: 0.6em;
text-align: left; vertical-align: top;; padding: 0px; border-collapse: collapse; border: 1px
solid #ddd; padding: 7px 10px; vertical-align: top; text-align: left"> <p style="margin:
10px 0 0 0; margin-top: 0">AMQ_SCHEDULED_REPEAT</p> </td> 
<td class="confluenceTd" style="border: 1px solid #DDD; padding: 5px 7px; min-width: 0.6em;
text-align: left; vertical-align: top;; padding: 0px; border-collapse: collapse; border: 1px
solid #ddd; padding: 7px 10px; vertical-align: top; text-align: left"> <p style="margin:
10px 0 0 0; margin-top: 0">int</p> </td> 
<td class="confluenceTd" style="border: 1px solid #DDD; padding: 5px 7px; min-width: 0.6em;
text-align: left; vertical-align: top;; padding: 0px; border-collapse: collapse; border: 1px
solid #ddd; padding: 7px 10px; vertical-align: top; text-align: left"> <p style="margin:
10px 0 0 0; margin-top: 0">The number of times to repeat scheduling a message for delivery</p>
</td> 
</tr> 
<tr> 
<td class="confluenceTd" style="border: 1px solid #DDD; padding: 5px 7px; min-width: 0.6em;
text-align: left; vertical-align: top;; padding: 0px; border-collapse: collapse; border: 1px
solid #ddd; padding: 7px 10px; vertical-align: top; text-align: left"> <p style="margin:
10px 0 0 0; margin-top: 0">AMQ_SCHEDULED_CRON</p> </td> 
<td class="confluenceTd" style="border: 1px solid #DDD; padding: 5px 7px; min-width: 0.6em;
text-align: left; vertical-align: top;; padding: 0px; border-collapse: collapse; border: 1px
solid #ddd; padding: 7px 10px; vertical-align: top; text-align: left"> <p style="margin:
10px 0 0 0; margin-top: 0">String</p> </td> 
<td class="confluenceTd" style="border: 1px solid #DDD; padding: 5px 7px; min-width: 0.6em;
text-align: left; vertical-align: top;; padding: 0px; border-collapse: collapse; border: 1px
solid #ddd; padding: 7px 10px; vertical-align: top; text-align: left"> <p style="margin:
10px 0 0 0; margin-top: 0">Use a Cron entry to set the schedule</p> </td> 
</tr> 
</tbody> 
</table> 
</div> <p class="diff-context-placeholder" style="margin: 10px 0 0 0">...</p>
<p class="diff-block-context" style="margin: 10px 0 0 0">For example, to have a message
scheduled for delivery in 60 seconds - you would need to set the <em>AMQ_SCHEDULED_DELAY</em>
property:</p> 
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solid #dddddd;margin: 10px 1px;padding: 0 2px 2px;width: 100%;; border-collapse: collapse;
mso-table-lspace: 0pt; mso-table-rspace: 0pt; color: #333"> 
<thead> 
<tr> 
<th class="diff-macro-title" style="background-color: transparent; text-align: left; font-weight:
normal;padding: 5px;"><span class="icon macro-placeholder-icon" style="background-color:
;line-height: 20px;"><img src="https://cwiki.apache.org/confluence/s/en_GB/5982/f2b47fb3d636c8bc9fd0b11c0ec6d0ae18646be7.1/_/plugins/servlet/confluence/placeholder/macro-icon?name=code"
style="padding-right: 5px; vertical-align: text-bottom;"> </span>Code Block</th>

</tr> 
</thead> 
<tbody> 
<tr> 
<td class="diff-macro-body" style="background-color: #fff;border: 1px solid #dddddd;padding:
10px;; padding: 0px; border-collapse: collapse"> <pre style="margin: 10px 0 0 0; margin-top:
0">        
<span class="diff-html-removed" id="removed-diff-1" style="font-size: 100%; background-color:
#ffe7e7; text-decoration: line-through;"> </span>MessageProducer producer = session.createProducer(destination);
        TextMessage message = session.createTextMessage("test msg");
        long time = 60 * 1000;
        message.setLongProperty(ScheduledMessage.AMQ_SCHEDULED_DELAY, time);
        producer.send(message);
</pre> </td> 
</tr> 
</tbody> 
</table> <p class="diff-block-context" style="margin: 10px 0 0 0">You can set
a message to wait with an initial delay, and the repeat delivery 10 times, waiting 10 seconds
between each re-delivery:</p> 
<table class="diff-macro diff-block-target" style="background-color: #f0f0f0;border: 1px
solid #dddddd;margin: 10px 1px;padding: 0 2px 2px;width: 100%;; border-collapse: collapse;
mso-table-lspace: 0pt; mso-table-rspace: 0pt; color: #333"> 
<thead> 
<tr> 
<th class="diff-macro-title" style="background-color: transparent; text-align: left; font-weight:
normal;padding: 5px;"><span class="icon macro-placeholder-icon" style="background-color:
;line-height: 20px;"><img src="https://cwiki.apache.org/confluence/s/en_GB/5982/f2b47fb3d636c8bc9fd0b11c0ec6d0ae18646be7.1/_/plugins/servlet/confluence/placeholder/macro-icon?name=code"
style="padding-right: 5px; vertical-align: text-bottom;"> </span>Code Block</th>

</tr> 
</thead> 
<tbody> 
<tr> 
<td class="diff-macro-body" style="background-color: #fff;border: 1px solid #dddddd;padding:
10px;; padding: 0px; border-collapse: collapse"> <pre style="margin: 10px 0 0 0; margin-top:
0">        
<span class="diff-html-removed" id="removed-diff-2" style="font-size: 100%; background-color:
#ffe7e7; text-decoration: line-through;"> </span>MessageProducer producer = session.createProducer(destination);
        TextMessage message = session.createTextMessage("test msg");
        long delay = 30 * 1000;
        long period = 10 * 1000;
        int repeat = 9;
        message.setLongProperty(ScheduledMessage.AMQ_SCHEDULED_DELAY, delay);
        message.setLongProperty(ScheduledMessage.AMQ_SCHEDULED_PERIOD, period);
        message.setIntProperty(ScheduledMessage.AMQ_SCHEDULED_REPEAT, repeat);
        producer.send(message);
</pre> </td> 
</tr> 
</tbody> 
</table> <p class="diff-block-context" style="margin: 10px 0 0 0">You can also
use <a href="http://en.wikipedia.org/wiki/Cron" class="external-link" rel="nofollow" style="color:
#3b73af; text-decoration: none">CRON</a> to schedule a message, for example, if you
want a message scheduled to be delivered every hour, you would need to set the CRON entry
to be - <em>0 * * * *</em> - e.g.</p> 
<table class="diff-macro diff-block-target" style="background-color: #f0f0f0;border: 1px
solid #dddddd;margin: 10px 1px;padding: 0 2px 2px;width: 100%;; border-collapse: collapse;
mso-table-lspace: 0pt; mso-table-rspace: 0pt; color: #333"> 
<thead> 
<tr> 
<th class="diff-macro-title" style="background-color: transparent; text-align: left; font-weight:
normal;padding: 5px;"><span class="icon macro-placeholder-icon" style="background-color:
;line-height: 20px;"><img src="https://cwiki.apache.org/confluence/s/en_GB/5982/f2b47fb3d636c8bc9fd0b11c0ec6d0ae18646be7.1/_/plugins/servlet/confluence/placeholder/macro-icon?name=code"
style="padding-right: 5px; vertical-align: text-bottom;"> </span>Code Block</th>

</tr> 
</thead> 
<tbody> 
<tr> 
<td class="diff-macro-body" style="background-color: #fff;border: 1px solid #dddddd;padding:
10px;; padding: 0px; border-collapse: collapse"> <pre style="margin: 10px 0 0 0; margin-top:
0">        
<span class="diff-html-removed" id="removed-diff-3" style="font-size: 100%; background-color:
#ffe7e7; text-decoration: line-through;"> </span>MessageProducer producer = session.createProducer(destination);
        TextMessage message = session.createTextMessage("test msg");
        message.setStringProperty(ScheduledMessage.AMQ_SCHEDULED_CRON, "0 * * * *");
        producer.send(message);
</pre> </td> 
</tr> 
</tbody> 
</table> <p class="diff-block-context" style="margin: 10px 0 0 0">CRON scheduling
takes priority over using message delay - however, if a repeat and period is set with a CRON
entry, the ActiveMQ scheduler will schedule delivery of the message for every time the CRON
entry fires. Easier to explain with an example. Supposing that you want a message to be delivered
10 times, with a one second delay between each message - and you wanted this to happen every
hour - you'd do this:</p> 
<table class="diff-macro diff-block-target" style="background-color: #f0f0f0;border: 1px
solid #dddddd;margin: 10px 1px;padding: 0 2px 2px;width: 100%;; border-collapse: collapse;
mso-table-lspace: 0pt; mso-table-rspace: 0pt; color: #333"> 
<thead> 
<tr> 
<th class="diff-macro-title" style="background-color: transparent; text-align: left; font-weight:
normal;padding: 5px;"><span class="icon macro-placeholder-icon" style="background-color:
;line-height: 20px;"><img src="https://cwiki.apache.org/confluence/s/en_GB/5982/f2b47fb3d636c8bc9fd0b11c0ec6d0ae18646be7.1/_/plugins/servlet/confluence/placeholder/macro-icon?name=code"
style="padding-right: 5px; vertical-align: text-bottom;"> </span>Code Block</th>

</tr> 
</thead> 
<tbody> 
<tr> 
<td class="diff-macro-body" style="background-color: #fff;border: 1px solid #dddddd;padding:
10px;; padding: 0px; border-collapse: collapse"> <pre style="margin: 10px 0 0 0; margin-top:
0">        
<span class="diff-html-removed" id="removed-diff-4" style="font-size: 100%; background-color:
#ffe7e7; text-decoration: line-through;"> </span>MessageProducer producer = session.createProducer(destination);
        TextMessage message = session.createTextMessage("test msg");
        message.setStringProperty(ScheduledMessage.AMQ_SCHEDULED_CRON, "0 * * * *");
        message.setLongProperty(ScheduledMessage.AMQ_SCHEDULED_DELAY, 1000);
        message.setLongProperty(ScheduledMessage.AMQ_SCHEDULED_PERIOD, 1000);
        message.setIntProperty(ScheduledMessage.AMQ_SCHEDULED_REPEAT, 9);
        producer.send(message);

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