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From "willem jiang (Confluence)" <conflue...@apache.org>
Subject [CONF] Apache Camel > SEDA
Date Fri, 20 Dec 2013 06:36:02 GMT
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                                                            <a href="    https://cwiki.apache.org/confluence/display/~njiang
" style="color:#326ca6;text-decoration:none;; color: #326ca6; text-decoration: none">willem
jiang</a> edited the page:
                                                        </div> </td>
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                                                <tr>
                                                    <td valign="top" style="font-size:
13px"> <h2 id="email-title-heading" style="font-size: 16px; line-height: 20px; min-height:
20px; margin: 0; padding: 0"> <a href="https://cwiki.apache.org/confluence/display/CAMEL/SEDA"
style="color: #326ca6; text-decoration: none"> <img class="icon" src="cid:page-icon"
alt="" style="border: 0; padding: 0 5px 0 0; text-align: left; vertical-align: middle" />
<strong style="font-size:16px;line-height:20px;vertical-align:top;">SEDA</strong>
</a> </h2> </td>
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16px 0">
                                            <div class="email-diff">
                                                <div id="page-diffs" class="wiki-content">
                                                    <p class="diff-context-placeholder"
style="font-size: 13px">...</p>
                                                    <p class="diff-block-context" style="font-size:
13px">You can append query options to the URI in the following format: <code style="font-size:
13px">?option=value&amp;option=value&amp;…</code> </p>
                                                    <h3 id="SEDA-Options" class="diff-block-context">Options</h3>
                                                    <table class="diff-macro diff-block-target"
style="background-color: #f0f0f0;border: 1px solid #dddddd;margin: 10px 1px;padding: 0 2px
2px;width: 100%;">
                                                        <thead>
                                                            <tr>
                                                                <th class="diff-macro-title"
style="background-color: transparent; text-align: left; font-weight: normal;padding: 5px;;
font-size: 13px"><span class="icon macro-placeholder-icon" style="background-color:
;line-height: 20px;"><img src="https://cwiki.apache.org/confluence/s/en_GB-1988229788/4109/76e0dbb30bc8580e459c201f3535d84f9283a9ac.1/_/images/icons/macrobrowser/macro-placeholder-default.png"
style="padding-right: 5px; vertical-align: text-bottom;" /> </span>Wiki Markup</th>
                                                            </tr>
                                                        </thead>
                                                        <tbody>
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                                                                <td class="diff-macro-body"
style="background-color: #fff;border: 1px solid #dddddd;padding: 10px;; font-size: 13px">
<pre style="font-size: 13px">
<span class="diff-html-removed" id="removed-diff-0" style="font-size: 100%; background-color:
#ffe7e7; text-decoration: line-through;">{div:class=confluenceTableSmall}
</span>|| Name || Since || Default || Description ||
| {{size}} | |  | The maximum capacity of the SEDA queue (i.e., the number of messages it
can hold). The default value in Camel 2.2 or older is {{1000}}. From Camel 2.3 onwards, the
size is unbounded by default. *Notice:* Mind if you use this option, then its the first endpoint
being created with the queue name, that determines the size. To make sure all endpoints use
same size, then configure the size option on all of them, or the first endpoint being created.
From *Camel 2.11* onwards, a validation is taken place to ensure if using mixed queue sizes
for the same queue name, Camel would detect this and fail creating the endpoint. |
| {{concurrentConsumers}} | | {{1}} | Number of concurrent threads processing exchanges. |
| {{waitForTaskToComplete}} | | {{IfReplyExpected}} | Option to specify whether the caller
should wait for the async task to complete or not before continuing. The following three options
are supported: {{Always}}, {{Never}} or {{IfReplyExpected}}. The first two values are self-explanatory.
The last value, {{IfReplyExpected}}, will only wait if the message is [Request Reply] based.
The default option is {{IfReplyExpected}}. See more information about [Async] messaging. |
| {{timeout}} | | {{30000}} | Timeout (in milliseconds) before a SEDA producer will stop waiting
for an asynchronous task to complete. See {{waitForTaskToComplete}} and [Async] for more details.
In *Camel 2.2* you can now disable timeout by using 0 or a negative value. |
| {{multipleConsumers}} | *2.2* | {{false}} | Specifies whether multiple consumers are allowed.
If enabled, you can use [SEDA] for [Publish-Subscribe|http://en.wikipedia.org/wiki/Publish%E2%80%93subscribe_pattern]
messaging. That is, you can send a message to the SEDA queue and have each consumer receive
a copy of the message. When enabled, this option should be specified on every consumer endpoint.
|
| {{limitConcurrentConsumers}} | *2.3* | {{true}} | Whether to limit the number of {{concurrentConsumers}}
to the maximum of {{500}}. By default, an exception will be thrown if a SEDA endpoint is configured
with a greater number. You can disable that check by turning this option off. |
| {{blockWhenFull}} | *2.9* | {{false}} | Whether a thread that sends messages to a full SEDA
queue will block until the queue's capacity is no longer exhausted.  By default, an exception
will be thrown stating that the queue is full. By enabling this option, the calling thread
will instead block and wait until the message can be accepted. |
| {{queueSize}} | *2.9* |  | *Component only:* The maximum default size (capacity of the number
of messages it can hold) of the SEDA queue. This option is used if {{size}} is not in use.
|
| {{pollTimeout}} | *2.9.3* | {{1000}} | _Consumer only_ -- The timeout used when polling.
When a timeout occurs, the consumer can check whether it is allowed to continue running. Setting
a lower value allows the consumer to react more quickly upon shutdown. |
| {{purgeWhenStopping}} | *2.11.1* | {{false}} | Whether to purge the task queue when stopping
the consumer/route. This allows to stop faster, as any pending messages on the queue is discarded.
|
| {{queue}} | *2.12.0* | null | Define the queue instance which will be used by seda endpoint
|
| {{queueFactory}} | *2.12.0* | null | Define the QueueFactory which could create the queue
for the seda endpoint |
| {{failIfNoConsumers}} | *2.12.0* | false | Whether the producer should fail by throwing
an exception, when sending to a SEDA queue with no active consumers. |
<span class="diff-html-removed" id="removed-diff-1" style="font-size: 100%; background-color:
#ffe7e7; text-decoration: line-through;">{div}</span>
</pre> </td>
                                                            </tr>
                                                        </tbody>
                                                    </table>
                                                    <h3 id="SEDA-ChoosingBlockingQueueimplementation"
class="diff-block-context">Choosing BlockingQueue implementation</h3>
                                                    <p class="diff-context-placeholder"
style="font-size: 13px">...</p>
                                                    <p class="diff-block-context" style="font-size:
13px">If needed, information such as queue size, etc. can be obtained without using JMX
in this fashion:</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%;">
                                                        <thead>
                                                            <tr>
                                                                <th class="diff-macro-title"
style="background-color: transparent; text-align: left; font-weight: normal;padding: 5px;;
font-size: 13px"><span class="icon macro-placeholder-icon" style="background-color:
;line-height: 20px;"><img src="https://cwiki.apache.org/confluence/s/en_GB-1988229788/4109/76e0dbb30bc8580e459c201f3535d84f9283a9ac.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-properties"
style="background-color: #fafafa; padding: 0 0 0 5px; font-size: 12px; text-align: left;padding:
0; border: 1px solid #dddddd;; font-size: 13px">
                                                                    <table>
                                                                        <tbody>
                                                                            <tr>
                                                                                <td style="background-color:
#fafafa; padding: 0 0 0 5px; font-size: 12px; text-align: left;; font-size: 13px"><span
class="diff-html-added" id="added-diff-0" style="font-size: 100%; background-color: #ddfade;">language</span></td>
                                                                                <td style="background-color:
#fafafa; padding: 0 0 0 5px; font-size: 12px; text-align: left;; font-size: 13px"><span
class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">java</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;; font-size: 13px">
<pre style="font-size: 13px">SedaEndpoint seda = context.getEndpoint(&quot;seda:xxxx&quot;);
int size = seda.getExchanges().size();
</pre> </td>
                                                            </tr>
                                                        </tbody>
                                                    </table>
                                                    <p class="diff-context-placeholder"
style="font-size: 13px">...</p>
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