| <div class="docbook"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Appendix G. Queue Declaration Arguments supported by the Broker</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="Java-Broker-Miscellaneous-Installing-External-JDBC-Driver.html">Prev</a> </td><th width="60%" align="center"> </th><td width="20%" align="right"> <a accesskey="n" href="Java-Broker-Appendix-BDB-HA-initial-configuration.html">Next</a></td></tr></table><hr /></div><div class="appendix"><div class="titlepage"><div><div><h1 class="title"><a id="Java-Broker-Appendix-Queue-Declare-Arguments"></a>Appendix G. Queue Declaration Arguments supported by the Broker</h1></div></div></div><p> |
| <span class="emphasis"><em>Qpid Broker-J</em></span> |
| supports a number of custom arguments which can be specified as part of <span class="emphasis"><em>queue.declare</em></span> |
| commands for AMQP 0-x protocols. This section provides an overview of the supported arguments. |
| </p><div class="table"><a id="Java-Broker-Appendix-Supported-Queue-Declare-Arguments"></a><p class="title"><strong>Table G.1. Queue declare arguments</strong></p><div class="table-contents"><table summary="Queue declare arguments" border="1"><colgroup><col class="argname" /><col class="description" /></colgroup><thead><tr><th>Argument Name</th><th>Description</th></tr></thead><tbody><tr><td><a id="Java-Broker-Appendix-Queue-Declare-Arguments-Overflow-Policy"></a> |
| <p>Declaration of overflow policy. |
| See |
| <a class="xref" href="Java-Broker-Concepts-Queues.html#Java-Broker-Concepts-Queue-OverflowPolicy" title="4.7.5. Controlling Queue Size">Section 4.7.5, “Controlling Queue Size”</a> |
| for more details. |
| </p> |
| </td><td class="auto-generated"> </td></tr><tr><td><a id="Java-Broker-Appendix-Queue-Declare-Arguments-Policy-Type"></a> |
| <p>qpid.policy_type</p> |
| </td><td> |
| <p>Defines queue overflow policy.</p> |
| </td></tr><tr><td><a id="Java-Broker-Appendix-Queue-Declare-Arguments-Max-Count"></a> |
| <p>qpid.max_count</p> |
| </td><td> |
| <p>Defines <span class="emphasis"><em>maximum number of messages</em></span>. |
| </p> |
| </td></tr><tr><td><a id="Java-Broker-Appendix-Queue-Declare-Arguments-Max-Size"></a> |
| <p>qpid.max_size</p> |
| </td><td> |
| <p>Defines <span class="emphasis"><em>maximum number of bytes</em></span>. |
| </p> |
| </td></tr><tr><td> |
| <p>The <span class="emphasis"><em>Overflow Policy</em></span> and the limits can be specified using |
| <span class="emphasis"><em>Address</em></span> |
| based syntax as in the example below: |
| </p><pre class="screen"> |
| my-queue; {create: always, node: |
| {x-declare: {arguments: |
| {'qpid.max_count': 10000, |
| 'qpid.max_size': 102400, |
| 'qpid.policy_type: 'ring'}}}} |
| </pre><p> |
| </p> |
| </td><td class="auto-generated"> </td></tr><tr><td><a id="Java-Broker-Appendix-Queue-Declare-Arguments-Overflow-Policy-Producer-Flow-Control"></a> |
| <p>Alternative declaration of <span class="emphasis"><em>Producer Flow Control</em></span> overflow policy. |
| See |
| <a class="xref" href="Java-Broker-Concepts-Queues.html#Java-Broker-Concepts-Queue-OverflowPolicy" title="4.7.5. Controlling Queue Size">Section 4.7.5, “Controlling Queue Size”</a> |
| for more details. |
| </p> |
| </td><td class="auto-generated"> </td></tr><tr><td><a id="Java-Broker-Appendix-Queue-Declare-Arguments-Capacity"></a> |
| <p>x-qpid-capacity</p> |
| </td><td> |
| <p>Defines <span class="emphasis"><em>maximum number of bytes</em></span>. |
| </p> |
| </td></tr><tr><td><a id="Java-Broker-Appendix-Queue-Declare-Arguments-Flow-Resume-Capacity"></a> |
| <p>x-qpid-flow-resume-capacity</p> |
| </td><td> |
| <p>Defines flow resume threshold in bytes</p> |
| </td></tr><tr><td> |
| <p>The <span class="emphasis"><em>Producer Flow Control</em></span> can be specified using |
| <span class="emphasis"><em>Address</em></span> based syntax as in the example below: |
| </p><pre class="screen"> |
| my-queue; {create: always, node: |
| {x-declare: {arguments: |
| {'x-qpid-capacity': 102400, |
| 'x-qpid-flow-resume-capacity': 8192000}}}} |
| </pre><p> |
| </p> |
| </td><td class="auto-generated"> </td></tr><tr><td><a id="Java-Broker-Appendix-Queue-Declare-Arguments-X-Qpid-Priorities"></a> |
| <p>x-qpid-priorities</p> |
| </td><td> |
| <p>Specifies a priority queue with given number priorities</p> |
| </td></tr><tr><td><a id="Java-Broker-Appendix-Queue-Declare-Arguments-Qpid-Sort-Key"></a> |
| <p>qpid.queue_sort_key</p> |
| </td><td> |
| <p>Specifies sorted queue with given message property used to sort the entries</p> |
| </td></tr><tr><td><a id="Java-Broker-Appendix-Queue-Declare-Arguments-Qpid-Last-Value-Key"></a> |
| <p>qpid.last_value_queue_key</p> |
| </td><td> |
| <p>Specifies lvq queue with given message property used to conflate the entries</p> |
| </td></tr><tr><td><a id="Java-Broker-Appendix-Queue-Declare-Arguments-Qpid-Ensure-Nondestructive-Consumers"></a> |
| <p>qpid.ensure_nondestructive_consumers</p> |
| </td><td> |
| <p>Set to true if the queue should make all consumers attached to it behave |
| non-destructively. (Default is false).</p> |
| </td></tr><tr><td><a id="Java-Broker-Appendix-Queue-Declare-Arguments-X-Qpid-Maximum-Delivery-Count"></a> |
| <p>x-qpid-maximum-delivery-count</p> |
| </td><td> |
| <p>Specifies this queue's maximum delivery count.</p> |
| </td></tr><tr><td><a id="Java-Broker-Appendix-Queue-Declare-Arguments-X-Single-Active-Consumer"></a> |
| <p>x-single-active-consumer</p> |
| </td><td> |
| <p>If set <code class="literal">true</code>, then of all consumers attached to a queue, only one will |
| be designated as <span class="emphasis"><em>active</em></span>, and eligible to receive messages. If the active |
| consumer is detached, and other consumers are attached, one of these other consumers is selected |
| to become the single active consumer.</p> |
| </td></tr></tbody></table></div></div><br class="table-break" /></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="Java-Broker-Miscellaneous-Installing-External-JDBC-Driver.html">Prev</a> </td><td width="20%" align="center"> </td><td width="40%" align="right"> <a accesskey="n" href="Java-Broker-Appendix-BDB-HA-initial-configuration.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">F.2. Installing External JDBC Driver </td><td width="20%" align="center"><a accesskey="h" href="Apache-Qpid-Broker-J-Book.html">Home</a></td><td width="40%" align="right" valign="top"> Appendix H. BDB HA initial configuration</td></tr></table></div></div> |