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svn commit: r1008195 [29/46] - in /websites/production/activemq/content/artemis/docs/1.5.4: ./ diagrams/ gitbook/ gitbook/fonts/ gitbook/fonts/fontawesome/ gitbook/gitbook-plugin-fontsettings/ gitbook/gitbook-plugin-highlight/ gitbook/gitbook-plugin-lu...

John D. Ament-2
Added: websites/production/activemq/content/artemis/docs/1.5.4/management.html
==============================================================================
--- websites/production/activemq/content/artemis/docs/1.5.4/management.html (added)
+++ websites/production/activemq/content/artemis/docs/1.5.4/management.html Sun Mar 12 16:08:18 2017
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+
+<!DOCTYPE HTML>
+<html lang="" >
+    <head>
+        <title>Management · ActiveMQ Artemis Documentation</title>
+        <meta charset="UTF-8">
+        <meta http-equiv="X-UA-Compatible" content="IE=edge" />
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+    <link rel="prev" href="pre-acknowledge.html" />
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+    </head>
+    <body>
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+<div class="book">
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+<div id="book-search-input" role="search">
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+</div>
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+<ul class="summary">
+    
+    
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+        
+    
+        <li class="chapter " data-level="1.1" data-path="./">
+            
+                <a href="./">
+            
+                    
+                    Introduction
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.2" data-path="notice.html">
+            
+                <a href="notice.html">
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+                    
+                    Legal Notice
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+        <li class="chapter " data-level="1.3" data-path="preface.html">
+            
+                <a href="preface.html">
+            
+                    
+                    Preface
+            
+                </a>
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+        </li>
+    
+        <li class="chapter " data-level="1.4" data-path="project-info.html">
+            
+                <a href="project-info.html">
+            
+                    
+                    Project Info
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+    
+        <li class="chapter " data-level="1.5" data-path="messaging-concepts.html">
+            
+                <a href="messaging-concepts.html">
+            
+                    
+                    Messaging Concepts
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.6" data-path="architecture.html">
+            
+                <a href="architecture.html">
+            
+                    
+                    Architecture
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.7" data-path="using-server.html">
+            
+                <a href="using-server.html">
+            
+                    
+                    Using the Server
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.8" data-path="using-jms.html">
+            
+                <a href="using-jms.html">
+            
+                    
+                    Using JMS
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.9" data-path="using-core.html">
+            
+                <a href="using-core.html">
+            
+                    
+                    Using Core
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.10" data-path="jms-core-mapping.html">
+            
+                <a href="jms-core-mapping.html">
+            
+                    
+                    Mapping JMS Concepts to the Core API
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.11" data-path="client-classpath.html">
+            
+                <a href="client-classpath.html">
+            
+                    
+                    The Client Classpath
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.12" data-path="examples.html">
+            
+                <a href="examples.html">
+            
+                    
+                    Examples
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.13" data-path="wildcard-routing.html">
+            
+                <a href="wildcard-routing.html">
+            
+                    
+                    Routing Messages With Wild Cards
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.14" data-path="wildcard-syntax.html">
+            
+                <a href="wildcard-syntax.html">
+            
+                    
+                    Understanding the Apache ActiveMQ Artemis Wildcard Syntax
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.15" data-path="filter-expressions.html">
+            
+                <a href="filter-expressions.html">
+            
+                    
+                    Filter Expressions
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.16" data-path="persistence.html">
+            
+                <a href="persistence.html">
+            
+                    
+                    Persistence
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.17" data-path="configuring-transports.html">
+            
+                <a href="configuring-transports.html">
+            
+                    
+                    Configuring Transports
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.18" data-path="config-reload.html">
+            
+                <a href="config-reload.html">
+            
+                    
+                    Configuration Reload
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.19" data-path="connection-ttl.html">
+            
+                <a href="connection-ttl.html">
+            
+                    
+                    Detecting Dead Connections
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.20" data-path="slow-consumers.html">
+            
+                <a href="slow-consumers.html">
+            
+                    
+                    Detecting Slow Consumers
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.21" data-path="transaction-config.html">
+            
+                <a href="transaction-config.html">
+            
+                    
+                    Resource Manager Configuration
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.22" data-path="flow-control.html">
+            
+                <a href="flow-control.html">
+            
+                    
+                    Flow Control
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.23" data-path="send-guarantees.html">
+            
+                <a href="send-guarantees.html">
+            
+                    
+                    Guarantees of sends and commits
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.24" data-path="undelivered-messages.html">
+            
+                <a href="undelivered-messages.html">
+            
+                    
+                    Message Redelivery and Undelivered Messages
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.25" data-path="message-expiry.html">
+            
+                <a href="message-expiry.html">
+            
+                    
+                    Message Expiry
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.26" data-path="large-messages.html">
+            
+                <a href="large-messages.html">
+            
+                    
+                    Large Messages
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.27" data-path="paging.html">
+            
+                <a href="paging.html">
+            
+                    
+                    Paging
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.28" data-path="queue-attributes.html">
+            
+                <a href="queue-attributes.html">
+            
+                    
+                    Queue Attributes
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.29" data-path="scheduled-messages.html">
+            
+                <a href="scheduled-messages.html">
+            
+                    
+                    Scheduled Messages
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.30" data-path="last-value-queues.html">
+            
+                <a href="last-value-queues.html">
+            
+                    
+                    Last-Value Queues
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.31" data-path="message-grouping.html">
+            
+                <a href="message-grouping.html">
+            
+                    
+                    Message Grouping
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.32" data-path="pre-acknowledge.html">
+            
+                <a href="pre-acknowledge.html">
+            
+                    
+                    Extra Acknowledge Modes
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter active" data-level="1.33" data-path="management.html">
+            
+                <a href="management.html">
+            
+                    
+                    Management
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.34" data-path="security.html">
+            
+                <a href="security.html">
+            
+                    
+                    Security
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.35" data-path="resource-limits.html">
+            
+                <a href="resource-limits.html">
+            
+                    
+                    Resource Limits
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.36" data-path="jms-bridge.html">
+            
+                <a href="jms-bridge.html">
+            
+                    
+                    The JMS Bridge
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.37" data-path="client-reconnection.html">
+            
+                <a href="client-reconnection.html">
+            
+                    
+                    Client Reconnection and Session Reattachment
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.38" data-path="diverts.html">
+            
+                <a href="diverts.html">
+            
+                    
+                    Diverting and Splitting Message Flows
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.39" data-path="core-bridges.html">
+            
+                <a href="core-bridges.html">
+            
+                    
+                    Core Bridges
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.40" data-path="duplicate-detection.html">
+            
+                <a href="duplicate-detection.html">
+            
+                    
+                    Duplicate Message Detection
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.41" data-path="clusters.html">
+            
+                <a href="clusters.html">
+            
+                    
+                    Clusters
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.42" data-path="ha.html">
+            
+                <a href="ha.html">
+            
+                    
+                    High Availability and Failover
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.43" data-path="graceful-shutdown.html">
+            
+                <a href="graceful-shutdown.html">
+            
+                    
+                    Graceful Server Shutdown
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.44" data-path="libaio.html">
+            
+                <a href="libaio.html">
+            
+                    
+                    Libaio Native Libraries
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.45" data-path="thread-pooling.html">
+            
+                <a href="thread-pooling.html">
+            
+                    
+                    Thread management
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.46" data-path="logging.html">
+            
+                <a href="logging.html">
+            
+                    
+                    Logging
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.47" data-path="rest.html">
+            
+                <a href="rest.html">
+            
+                    
+                    REST Interface
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.48" data-path="embedding-activemq.html">
+            
+                <a href="embedding-activemq.html">
+            
+                    
+                    Embedding Apache ActiveMQ Artemis
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.49" data-path="karaf.html">
+            
+                <a href="karaf.html">
+            
+                    
+                    Apache Karaf
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.50" data-path="spring-integration.html">
+            
+                <a href="spring-integration.html">
+            
+                    
+                    Spring Integration
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.51" data-path="aerogear-integration.html">
+            
+                <a href="aerogear-integration.html">
+            
+                    
+                    AeroGear Integration
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.52" data-path="vertx-integration.html">
+            
+                <a href="vertx-integration.html">
+            
+                    
+                    VertX Integration
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.53" data-path="cdi-integration.html">
+            
+                <a href="cdi-integration.html">
+            
+                    
+                    CDI Integration
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.54" data-path="intercepting-operations.html">
+            
+                <a href="intercepting-operations.html">
+            
+                    
+                    Intercepting Operations
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.55" data-path="protocols-interoperability.html">
+            
+                <a href="protocols-interoperability.html">
+            
+                    
+                    Protocols and Interoperability
+            
+                </a>
+            
+
+            
+        </li>
+    
+        <li class="chapter " data-level="1.56" data-path="tools.html">
+            
+                <a href="tools.html">
+            
+                    
+                    Tools
+            
+                </a>
+            
+
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+    
+        <li class="chapter " data-level="1.57" data-path="maven-plugin.html">
+            
+                <a href="maven-plugin.html">
+            
+                    
+                    Maven Plugin
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+            
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+            
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+            
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+                    Unit Testing
+            
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+            
+                    
+                    Troubleshooting and Performance Tuning
+            
+                </a>
+            
+
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+            
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+                    Configuration Reference
+            
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+    <!-- Title -->
+    <h1>
+        <i class="fa fa-circle-o-notch fa-spin"></i>
+        <a href="." >Management</a>
+    </h1>
+</div>
+
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+                                
+                                <h1 id="management">Management</h1>
+<p>Apache ActiveMQ Artemis has an extensive management API that allows a user to modify a
+server configuration, create new resources (e.g. JMS queues and topics),
+inspect these resources (e.g. how many messages are currently held in a
+queue) and interact with it (e.g. to remove messages from a queue). All
+the operations allows a client to <em>manage</em> Apache ActiveMQ Artemis. It also allows
+clients to subscribe to management notifications.</p>
+<p>There are 3 ways to manage Apache ActiveMQ Artemis:</p>
+<ul>
+<li><p>Using JMX -- JMX is the standard way to manage Java applications</p>
+</li>
+<li><p>Using the core API -- management operations are sent to Apache ActiveMQ Artemis
+server using <em>core messages</em></p>
+</li>
+<li><p>Using the JMS API -- management operations are sent to Apache ActiveMQ Artemis
+server using <em>JMS messages</em></p>
+</li>
+</ul>
+<p>Although there are 3 different ways to manage Apache ActiveMQ Artemis each API supports
+the same functionality. If it is possible to manage a resource using JMX
+it is also possible to achieve the same result using Core messages or
+JMS messages.</p>
+<p>This choice depends on your requirements, your application settings and
+your environment to decide which way suits you best.</p>
+<h2 id="object-name-changes-between-versions-11-and-2">Object name changes between versions 1.1 and 2</h2>
+<p>In version 1.2 of Artemis new properties were added to distinguish object names when multiple brokers were deploiyed in
+the same JVM and to be more like ActiveMQ 5. so for the server the name changed from <code>org.apache.activemq.artemis:module=Core,type=Server</code>
+to <code>org.apache.activemq.artemis:type=Broker,brokerName=&lt;broker name&gt;,module=Core,ServerType=Server</code>. you can configure
+the old style by setting <code>&lt;jmx-use-broker-name&gt;false&lt;/jmx-use-broker-name&gt;</code>. Note that if you do not set a broker name
+then this will default to localhost.</p>
+<h2 id="the-management-api">The Management API</h2>
+<p>Regardless of the way you <em>invoke</em> management operations, the management
+API is the same.</p>
+<p>For each <em>managed resource</em>, there exists a Java interface describing
+what can be invoked for this type of resource.</p>
+<p>Apache ActiveMQ Artemis exposes its managed resources in 2 packages:</p>
+<ul>
+<li><p><em>Core</em> resources are located in the
+<code>org.apache.activemq.artemis.api.core.management</code> package</p>
+</li>
+<li><p><em>JMS</em> resources are located in the
+<code>org.apache.activemq.artemis.api.jms.management</code> package</p>
+</li>
+</ul>
+<p>The way to invoke a <em>management operations</em> depends whether JMX, core
+messages, or JMS messages are used.</p>
+<blockquote>
+<p><strong>Note</strong></p>
+<p>A few management operations requires a <code>filter</code> parameter to chose
+which messages are involved by the operation. Passing <code>null</code> or an
+empty string means that the management operation will be performed on
+<em>all messages</em>.</p>
+</blockquote>
+<h3 id="core-management-api">Core Management API</h3>
+<p>Apache ActiveMQ Artemis defines a core management API to manage core resources. For
+full details of the API please consult the javadoc. In summary:</p>
+<h4 id="core-server-management">Core Server Management</h4>
+<ul>
+<li><p>Listing, creating, deploying and destroying queues</p>
+<p>A list of deployed core queues can be retrieved using the
+<code>getQueueNames()</code> method.</p>
+<p>Core queues can be created or destroyed using the management
+operations <code>createQueue()</code> or <code>deployQueue()</code> or <code>destroyQueue()</code>)on
+the <code>ActiveMQServerControl</code> (with the ObjectName
+<code>org.apache.activemq.artemis:type=Broker,brokerName=&lt;broker name&gt;,module=Core,serviceType=Server</code> or the resource name
+<code>core.server</code>)</p>
+<p><code>createQueue</code> will fail if the queue already exists while
+<code>deployQueue</code> will do nothing.</p>
+</li>
+<li><p>Pausing and resuming Queues</p>
+<p>The <code>QueueControl</code> can pause and resume the underlying queue. When a
+queue is paused, it will receive messages but will not deliver them.
+When it&apos;s resumed, it&apos;ll begin delivering the queued messages, if
+any.</p>
+</li>
+<li><p>Listing and closing remote connections</p>
+<p>Client&apos;s remote addresses can be retrieved using
+<code>listRemoteAddresses()</code>. It is also possible to close the
+connections associated with a remote address using the
+<code>closeConnectionsForAddress()</code> method.</p>
+<p>Alternatively, connection IDs can be listed using
+<code>listConnectionIDs()</code> and all the sessions for a given connection ID
+can be listed using <code>listSessions()</code>.</p>
+</li>
+<li><p>Transaction heuristic operations</p>
+<p>In case of a server crash, when the server restarts, it it possible
+that some transaction requires manual intervention. The
+<code>listPreparedTransactions()</code> method lists the transactions which are
+in the prepared states (the transactions are represented as opaque
+Base64 Strings.) To commit or rollback a given prepared transaction,
+the <code>commitPreparedTransaction()</code> or <code>rollbackPreparedTransaction()</code>
+method can be used to resolve heuristic transactions. Heuristically
+completed transactions can be listed using the
+<code>listHeuristicCommittedTransactions()</code> and
+<code>listHeuristicRolledBackTransactions</code> methods.</p>
+</li>
+<li><p>Enabling and resetting Message counters</p>
+<p>Message counters can be enabled or disabled using the
+<code>enableMessageCounters()</code> or <code>disableMessageCounters()</code> method. To
+reset message counters, it is possible to invoke
+<code>resetAllMessageCounters()</code> and <code>resetAllMessageCounterHistories()</code>
+methods.</p>
+</li>
+<li><p>Retrieving the server configuration and attributes</p>
+<p>The <code>ActiveMQServerControl</code> exposes Apache ActiveMQ Artemis server configuration
+through all its attributes (e.g. <code>getVersion()</code> method to retrieve
+the server&apos;s version, etc.)</p>
+</li>
+<li><p>Listing, creating and destroying Core bridges and diverts</p>
+<p>A list of deployed core bridges (resp. diverts) can be retrieved
+using the <code>getBridgeNames()</code> (resp. <code>getDivertNames()</code>) method.</p>
+<p>Core bridges (resp. diverts) can be created or destroyed using the
+management operations <code>createBridge()</code> and <code>destroyBridge()</code> (resp.
+<code>createDivert()</code> and <code>destroyDivert()</code>) on the
+<code>ActiveMQServerControl</code> (with the ObjectName
+<code>org.apache.activemq.artemis:module=Core,type=Server</code> or the resource name
+<code>core.server</code>).</p>
+</li>
+<li><p>It is possible to stop the server and force failover to occur with
+any currently attached clients.</p>
+<p>to do this use the <code>forceFailover()</code> on the <code>ActiveMQServerControl</code>
+(with the ObjectName <code>org.apache.activemq.artemis:type=Broker,brokerName=&lt;broker name&gt;,module=Core,serviceType=Server</code>
+or the resource name <code>core.server</code>)</p>
+<blockquote>
+<p><strong>Note</strong></p>
+<p>Since this method actually stops the server you will probably
+receive some sort of error depending on which management service
+you use to call it.</p>
+</blockquote>
+</li>
+</ul>
+<h4 id="core-address-management">Core Address Management</h4>
+<p>Core addresses can be managed using the <code>AddressControl</code> class (with the
+ObjectName <code>org.apache.activemq.artemis:type=Broker,brokerName=&lt;broker name&gt;,module=Core,serviceType=Address,name=&quot;&lt;the
+                  address name&gt;&quot;</code> or the resource name
+<code>core.address.&lt;the
+                  address name&gt;</code>).</p>
+<ul>
+<li><p>Modifying roles and permissions for an address</p>
+<p>You can add or remove roles associated to a queue using the
+<code>addRole()</code> or <code>removeRole()</code> methods. You can list all the roles
+associated to the queue with the <code>getRoles()</code> method</p>
+</li>
+</ul>
+<h4 id="core-queue-management">Core Queue Management</h4>
+<p>The bulk of the core management API deals with core queues. The
+<code>QueueControl</code> class defines the Core queue management operations (with
+the ObjectName
+<code>org.apache.activemq.artemis:type=Broker,brokerName=&lt;broker name&gt;,module=Core,serviceType=Queue,address=&quot;&lt;the bound
+                  address&gt;&quot;,name=&quot;&lt;the queue name&gt;&quot;</code> or the resource
+name <code>core.queue.&lt;the queue name&gt;</code>).</p>
+<p>Most of the management operations on queues take either a single message
+ID (e.g. to remove a single message) or a filter (e.g. to expire all
+messages with a given property.)</p>
+<ul>
+<li><p>Expiring, sending to a dead letter address and moving messages</p>
+<p>Messages can be expired from a queue by using the <code>expireMessages()</code>
+method. If an expiry address is defined, messages will be sent to
+it, otherwise they are discarded. The queue&apos;s expiry address can be
+set with the <code>setExpiryAddress()</code> method.</p>
+<p>Messages can also be sent to a dead letter address with the
+<code>sendMessagesToDeadLetterAddress()</code> method. It returns the number of
+messages which are sent to the dead letter address. If a dead letter
+address is not defined, message are removed from the queue and
+discarded. The queue&apos;s dead letter address can be set with the
+<code>setDeadLetterAddress()</code> method.</p>
+<p>Messages can also be moved from a queue to another queue by using
+the <code>moveMessages()</code> method.</p>
+</li>
+<li><p>Listing and removing messages</p>
+<p>Messages can be listed from a queue by using the <code>listMessages()</code>
+method which returns an array of <code>Map</code>, one <code>Map</code> for each message.</p>
+<p>Messages can also be removed from the queue by using the
+<code>removeMessages()</code> method which returns a <code>boolean</code> for the single
+message ID variant or the number of removed messages for the filter
+variant. The <code>removeMessages()</code> method takes a <code>filter</code> argument to
+remove only filtered messages. Setting the filter to an empty string
+will in effect remove all messages.</p>
+</li>
+<li><p>Counting messages</p>
+<p>The number of messages in a queue is returned by the
+<code>getMessageCount()</code> method. Alternatively, the <code>countMessages()</code>
+will return the number of messages in the queue which <em>match a given
+filter</em></p>
+</li>
+<li><p>Changing message priority</p>
+<p>The message priority can be changed by using the
+<code>changeMessagesPriority()</code> method which returns a <code>boolean</code> for the
+single message ID variant or the number of updated messages for the
+filter variant.</p>
+</li>
+<li><p>Message counters</p>
+<p>Message counters can be listed for a queue with the
+<code>listMessageCounter()</code> and <code>listMessageCounterHistory()</code> methods
+(see Message Counters section). The message counters can also be
+reset for a single queue using the <code>resetMessageCounter()</code> method.</p>
+</li>
+<li><p>Retrieving the queue attributes</p>
+<p>The <code>QueueControl</code> exposes Core queue settings through its
+attributes (e.g. <code>getFilter()</code> to retrieve the queue&apos;s filter if it
+was created with one, <code>isDurable()</code> to know whether the queue is
+durable or not, etc.)</p>
+</li>
+<li><p>Pausing and resuming Queues</p>
+<p>The <code>QueueControl</code> can pause and resume the underlying queue. When a
+queue is paused, it will receive messages but will not deliver them.
+When it&apos;s resume, it&apos;ll begin delivering the queued messages, if
+any.</p>
+</li>
+</ul>
+<h4 id="other-core-resources-management">Other Core Resources Management</h4>
+<p>Apache ActiveMQ Artemis allows to start and stop its remote resources (acceptors,
+diverts, bridges, etc.) so that a server can be taken off line for a
+given period of time without stopping it completely (e.g. if other
+management operations must be performed such as resolving heuristic
+transactions). These resources are:</p>
+<ul>
+<li><p>Acceptors</p>
+<p>They can be started or stopped using the <code>start()</code> or. <code>stop()</code>
+method on the <code>AcceptorControl</code> class (with the ObjectName
+<code>org.apache.activemq.artemis:type=Broker,brokerName=&lt;broker name&gt;,module=Core,serviceType=Acceptor,name=&quot;&lt;the acceptor name&gt;&quot;</code>
+or the resource name
+<code>core.acceptor.&lt;the address name&gt;</code>). The acceptors parameters
+can be retrieved using the <code>AcceptorControl</code> attributes (see <a href="configuring-transports.html">Understanding Acceptors</a>)</p>
+</li>
+<li><p>Diverts</p>
+<p>They can be started or stopped using the <code>start()</code> or <code>stop()</code>
+method on the <code>DivertControl</code> class (with the ObjectName
+<code>org.apache.activemq.artemis:type=Broker,brokerName=&lt;broker name&gt;,module=Core,serviceType=Divert,name=&lt;the divert name&gt;</code>
+or the resource name <code>core.divert.&lt;the divert name&gt;</code>). Diverts
+parameters can be retrieved using the <code>DivertControl</code> attributes
+(see <a href="diverts.html">Diverting and Splitting Message Flows)</a>)</p>
+</li>
+<li><p>Bridges</p>
+<p>They can be started or stopped using the <code>start()</code> (resp. <code>stop()</code>)
+method on the <code>BridgeControl</code> class (with the ObjectName
+<code>org.apache.activemq.artemis:type=Broker,brokerName=&lt;broker name&gt;,module=Core,serviceType=Bridge,name=&quot;&lt;the bridge name&gt;&quot;</code>
+or the resource name
+<code>core.bridge.&lt;the bridge name&gt;</code>). Bridges parameters can be retrieved
+using the <code>BridgeControl</code> attributes (see <a href="core-bridges.html">Core bridges</a>)</p>
+</li>
+<li><p>Broadcast groups</p>
+<p>They can be started or stopped using the <code>start()</code> or <code>stop()</code>
+method on the <code>BroadcastGroupControl</code> class (with the ObjectName
+<code>org.apache.activemq.artemis:type=Broker,brokerName=&lt;broker name&gt;,module=Core,serviceType=BroadcastGroup,name=&quot;&lt;the broadcast group name&gt;&quot;</code> or the resource name
+<code>core.broadcastgroup.&lt;the broadcast group name&gt;</code>). Broadcast groups
+parameters can be retrieved using the <code>BroadcastGroupControl</code>
+attributes (see <a href="clusters.html">Clusters</a>)</p>
+</li>
+<li><p>Discovery groups</p>
+<p>They can be started or stopped using the <code>start()</code> or <code>stop()</code>
+method on the <code>DiscoveryGroupControl</code> class (with the ObjectName
+<code>org.apache.activemq.artemis:type=Broker,brokerName=&lt;broker name&gt;,module=Core,serviceType=DiscoveryGroup,name=&quot;&lt;the discovery group name&gt;&quot;</code> or the resource name
+<code>core.discovery.&lt;the discovery group name&gt;</code>). Discovery groups
+parameters can be retrieved using the <code>DiscoveryGroupControl</code>
+attributes (see <a href="clusters.html">Clusters</a>)</p>
+</li>
+<li><p>Cluster connections</p>
+<p>They can be started or stopped using the <code>start()</code> or <code>stop()</code>
+method on the <code>ClusterConnectionControl</code> class (with the ObjectName
+<code>org.apache.activemq.artemis:type=Broker,brokerName=&lt;broker name&gt;,module=Core,serviceType=ClusterConnection,name=&quot;&lt;the cluster connection name&gt;&quot;</code> or the resource name
+<code>core.clusterconnection.&lt;the cluster connection name&gt;</code>). Cluster
+connections parameters can be retrieved using the
+<code>ClusterConnectionControl</code> attributes (see <a href="clusters.html">Clusters</a>)</p>
+</li>
+</ul>
+<h3 id="jms-management-api">JMS Management API</h3>
+<p>Apache ActiveMQ Artemis defines a JMS Management API to manage JMS <em>administrated
+objects</em> (i.e. JMS queues, topics and connection factories).</p>
+<h4 id="jms-server-management">JMS Server Management</h4>
+<p>JMS Resources (connection factories and destinations) can be created
+using the <code>JMSServerControl</code> class (with the ObjectName
+<code>org.apache.activemq.artemis:type=Broker,brokerName=&lt;broker name&gt;,module=JMS,serviceType=Server</code> or the resource name
+<code>jms.server</code>).</p>
+<ul>
+<li><p>Listing, creating, destroying connection factories</p>
+<p>Names of the deployed connection factories can be retrieved by the
+<code>getConnectionFactoryNames()</code> method.</p>
+<p>JMS connection factories can be created or destroyed using the
+<code>createConnectionFactory()</code> methods or <code>destroyConnectionFactory()</code>
+methods. These connection factories are bound to JNDI so that JMS
+clients can look them up. If a graphical console is used to create
+the connection factories, the transport parameters are specified in
+the text field input as a comma-separated list of key=value (e.g.
+<code>key1=10, key2=&quot;value&quot;, key3=false</code>). If there are multiple
+transports defined, you need to enclose the key/value pairs between
+curly braces. For example <code>{key=10}, {key=20}</code>. In that case, the
+first <code>key</code> will be associated to the first transport configuration
+and the second <code>key</code> will be associated to the second transport
+configuration (see <a href="configuring-transports.html">Configuring Transports</a>
+for a list of the transport parameters)</p>
+</li>
+<li><p>Listing, creating, destroying queues</p>
+<p>Names of the deployed JMS queues can be retrieved by the
+<code>getQueueNames()</code> method.</p>
+<p>JMS queues can be created or destroyed using the <code>createQueue()</code>
+methods or <code>destroyQueue()</code> methods. These queues are bound to JNDI
+so that JMS clients can look them up</p>
+</li>
+<li><p>Listing, creating/destroying topics</p>
+<p>Names of the deployed topics can be retrieved by the
+<code>getTopicNames()</code> method.</p>
+<p>JMS topics can be created or destroyed using the <code>createTopic()</code> or
+<code>destroyTopic()</code> methods. These topics are bound to JNDI so that JMS
+clients can look them up</p>
+</li>
+<li><p>Listing and closing remote connections</p>
+<p>JMS Clients remote addresses can be retrieved using
+<code>listRemoteAddresses()</code>. It is also possible to close the
+connections associated with a remote address using the
+<code>closeConnectionsForAddress()</code> method.</p>
+<p>Alternatively, connection IDs can be listed using
+<code>listConnectionIDs()</code> and all the sessions for a given connection ID
+can be listed using <code>listSessions()</code>.</p>
+</li>
+</ul>
+<h4 id="jms-connectionfactory-management">JMS ConnectionFactory Management</h4>
+<p>JMS Connection Factories can be managed using the
+<code>ConnectionFactoryControl</code> class (with the ObjectName
+<code>org.apache.activemq.artemis:type=Broker,brokerName=&lt;broker name&gt;,module=JMS,serviceType=ConnectionFactory,name=&quot;&lt;the connection factory
+                  name&gt;&quot;</code> or the resource name
+<code>jms.connectionfactory.&lt;the
+                  connection factory name&gt;</code>).</p>
+<ul>
+<li><p>Retrieving connection factory attributes</p>
+<p>The <code>ConnectionFactoryControl</code> exposes JMS ConnectionFactory
+configuration through its attributes (e.g. <code>getConsumerWindowSize()</code>
+to retrieve the consumer window size for flow control,
+<code>isBlockOnNonDurableSend()</code> to know whether the producers created
+from the connection factory will block or not when sending
+non-durable messages, etc.)</p>
+</li>
+</ul>
+<h4 id="jms-queue-management">JMS Queue Management</h4>
+<p>JMS queues can be managed using the <code>JMSQueueControl</code> class (with the
+ObjectName <code>org.apache.activemq.artemis:type=Broker,brokerName=&lt;broker name&gt;,module=JMS,serviceType=Queue,name=&quot;&lt;the queue
+                  name&gt;&quot;</code> or the resource name <code>jms.queue.&lt;the queue
+                  name&gt;</code>).</p>
+<p><em>The management operations on a JMS queue are very similar to the
+operations on a core queue.</em></p>
+<ul>
+<li><p>Expiring, sending to a dead letter address and moving messages</p>
+<p>Messages can be expired from a queue by using the <code>expireMessages()</code>
+method. If an expiry address is defined, messages will be sent to
+it, otherwise they are discarded. The queue&apos;s expiry address can be
+set with the <code>setExpiryAddress()</code> method.</p>
+<p>Messages can also be sent to a dead letter address with the
+<code>sendMessagesToDeadLetterAddress()</code> method. It returns the number of
+messages which are sent to the dead letter address. If a dead letter
+address is not defined, message are removed from the queue and
+discarded. The queue&apos;s dead letter address can be set with the
+<code>setDeadLetterAddress()</code> method.</p>
+<p>Messages can also be moved from a queue to another queue by using
+the <code>moveMessages()</code> method.</p>
+</li>
+<li><p>Listing and removing messages</p>
+<p>Messages can be listed from a queue by using the <code>listMessages()</code>
+method which returns an array of <code>Map</code>, one <code>Map</code> for each message.</p>
+<p>Messages can also be removed from the queue by using the
+<code>removeMessages()</code> method which returns a <code>boolean</code> for the single
+message ID variant or the number of removed messages for the filter
+variant. The <code>removeMessages()</code> method takes a <code>filter</code> argument to
+remove only filtered messages. Setting the filter to an empty string
+will in effect remove all messages.</p>
+</li>
+<li><p>Counting messages</p>
+<p>The number of messages in a queue is returned by the
+<code>getMessageCount()</code> method. Alternatively, the <code>countMessages()</code>
+will return the number of messages in the queue which <em>match a given
+filter</em></p>
+</li>
+<li><p>Changing message priority</p>
+<p>The message priority can be changed by using the
+<code>changeMessagesPriority()</code> method which returns a <code>boolean</code> for the
+single message ID variant or the number of updated messages for the
+filter variant.</p>
+</li>
+<li><p>Message counters</p>
+<p>Message counters can be listed for a queue with the
+<code>listMessageCounter()</code> and <code>listMessageCounterHistory()</code> methods
+(see Message Counters section)</p>
+</li>
+<li><p>Retrieving the queue attributes</p>
+<p>The <code>JMSQueueControl</code> exposes JMS queue settings through its
+attributes (e.g. <code>isTemporary()</code> to know whether the queue is
+temporary or not, <code>isDurable()</code> to know whether the queue is durable
+or not, etc.)</p>
+</li>
+<li><p>Pausing and resuming queues</p>
+<p>The <code>JMSQueueControl</code> can pause and resume the underlying queue.
+When the queue is paused it will continue to receive messages but
+will not deliver them. When resumed again it will deliver the
+enqueued messages, if any.</p>
+</li>
+</ul>
+<h4 id="jms-topic-management">JMS Topic Management</h4>
+<p>JMS Topics can be managed using the <code>TopicControl</code> class (with the
+ObjectName <code>org.apache.activemq.artemis:type=Broker,brokerName=&lt;broker name&gt;,module=JMS,serviceType=Topic,name=&quot;&lt;the topic
+                  name&gt;&quot;</code> or the resource name <code>jms.topic.&lt;the topic
+                  name&gt;</code>).</p>
+<ul>
+<li><p>Listing subscriptions and messages</p>
+<p>JMS topics subscriptions can be listed using the
+<code>listAllSubscriptions()</code>, <code>listDurableSubscriptions()</code>,
+<code>listNonDurableSubscriptions()</code> methods. These methods return arrays
+of <code>Object</code> representing the subscriptions information (subscription
+name, client ID, durability, message count, etc.). It is also
+possible to list the JMS messages for a given subscription with the
+<code>listMessagesForSubscription()</code> method.</p>
+</li>
+<li><p>Dropping subscriptions</p>
+<p>Durable subscriptions can be dropped from the topic using the
+<code>dropDurableSubscription()</code> method.</p>
+</li>
+<li><p>Counting subscriptions messages</p>
+<p>The <code>countMessagesForSubscription()</code> method can be used to know the
+number of messages held for a given subscription (with an optional
+message selector to know the number of messages matching the
+selector)</p>
+</li>
+</ul>
+<h2 id="using-management-via-jmx">Using Management Via JMX</h2>
+<p>Apache ActiveMQ Artemis can be managed using
+<a href="http://www.oracle.com/technetwork/java/javase/tech/javamanagement-140525.html" target="_blank">JMX</a>.</p>
+<p>The management API is exposed by Apache ActiveMQ Artemis using MBeans interfaces.
+Apache ActiveMQ Artemis registers its resources with the domain <code>org.apache.activemq</code>.</p>
+<p>For example, the <code>ObjectName</code> to manage a JMS Queue <code>exampleQueue</code> is:</p>
+<pre><code>org.apache.activemq.artemis:type=Broker,brokerName=&lt;broker name&gt;,module=JMS,serviceType=Queue,name=&quot;exampleQueue&quot;
+</code></pre><p>and the MBean is:</p>
+<pre><code>org.apache.activemq.artemis.api.jms.management.JMSQueueControl
+</code></pre><p>The MBean&apos;s <code>ObjectName</code> are built using the helper class
+<code>org.apache.activemq.artemis.api.core.management.ObjectNameBuilder</code>. You can
+also use <code>jconsole</code> to find the <code>ObjectName</code> of the MBeans you want to
+manage.</p>
+<p>Managing Apache ActiveMQ Artemis using JMX is identical to management of any Java
+Applications using JMX. It can be done by reflection or by creating
+proxies of the MBeans.</p>
+<h3 id="configuring-jmx">Configuring JMX</h3>
+<p>By default, JMX is enabled to manage Apache ActiveMQ Artemis. It can be disabled by
+setting <code>jmx-management-enabled</code> to <code>false</code> in
+<code>broker.xml</code>:</p>
+<pre><code>&lt;!-- false to disable JMX management for Apache ActiveMQ Artemis --&gt;
+&lt;jmx-management-enabled&gt;false&lt;/jmx-management-enabled&gt;
+</code></pre><p>If JMX is enabled, Apache ActiveMQ Artemis can be managed locally using <code>jconsole</code>.</p>
+<blockquote>
+<p><strong>Note</strong></p>
+<p>Remote connections to JMX are not enabled by default for security
+reasons. Please refer to <a href="http://docs.oracle.com/javase/6/docs/technotes/guides/management/agent.html" target="_blank">Java Management
+guide</a>
+to configure the server for remote management (system properties must
+be set in <code>run.sh</code> or <code>run.bat</code> scripts).</p>
+</blockquote>
+<p>By default, Apache ActiveMQ Artemis server uses the JMX domain &quot;org.apache.activemq.artemis&quot;.
+To manage several Apache ActiveMQ Artemis servers from the <em>same</em> MBeanServer, the JMX
+domain can be configured for each individual Apache ActiveMQ Artemis server by setting
+<code>jmx-domain</code> in <code>broker.xml</code>:</p>
+<pre><code>&lt;!-- use a specific JMX domain for ActiveMQ Artemis MBeans --&gt;
+&lt;jmx-domain&gt;my.org.apache.activemq&lt;/jmx-domain&gt;
+</code></pre><h4 id="mbeanserver-configuration">MBeanServer configuration</h4>
+<p>When Apache ActiveMQ Artemis is run in standalone, it uses the Java Virtual Machine&apos;s
+<code>Platform MBeanServer</code> to register its MBeans. By default <a href="http://www.jolokia.org/" target="_blank">Jolokia</a>
+is also deployed to allow access to the mbean server via rest.</p>
+<h3 id="example">Example</h3>
+<p>See the <a href="examples.html">chapters</a> chapter for an example which shows how to use a remote connection to JMX
+and MBean proxies to manage Apache ActiveMQ Artemis.</p>
+<h3 id="exposing-jmx-using-jolokia">Exposing JMX using Jolokia</h3>
+<p>The default Broker configuration ships with the <a href="http://www.jolokia.org" target="_blank">Jolokia</a>
+http agent deployed as a Web Application. Jolokia is a remote
+JMX over HTTP bridge that exposed mBeans, for a full guids as
+to how to use refer to <a href="http://www.jolokia.org/documentation.html" target="_blank">Jolokia Documentation</a>,
+however a simple example to query thebrokers version would
+be to use a brower and go to the URL <a href="http://localhost:8161/jolokia/read/org.apache.activemq.artemis:module=Core,type=Server/Version" target="_blank">http://localhost:8161/jolokia/read/org.apache.activemq.artemis:module=Core,type=Server/Version</a>.</p>
+<p>This would give you back something like the following:</p>
+<pre><code>{&quot;timestamp&quot;:1422019706,&quot;status&quot;:200,&quot;request&quot;:{&quot;mbean&quot;:&quot;org.apache.activemq.artemis:type=Broker,brokerName=&lt;broker name&gt;,module=Core,serviceType=Server&quot;,&quot;attribute&quot;:&quot;Version&quot;,&quot;type&quot;:&quot;read&quot;},&quot;value&quot;:&quot;1.0.0.SNAPSHOT (Active Hornet, 126)&quot;}
+</code></pre><h2 id="using-management-via-core-api">Using Management Via Core API</h2>
+<p>The core management API in ActiveMQ Artemis is called by sending Core messages
+to a special address, the <em>management address</em>.</p>
+<p><em>Management messages</em> are regular Core messages with well-known
+properties that the server needs to understand to interact with the
+management API:</p>
+<ul>
+<li><p>The name of the managed resource</p>
+</li>
+<li><p>The name of the management operation</p>
+</li>
+<li><p>The parameters of the management operation</p>
+</li>
+</ul>
+<p>When such a management message is sent to the management address,
+Apache ActiveMQ Artemis server will handle it, extract the information, invoke the
+operation on the managed resources and send a <em>management reply</em> to the
+management message&apos;s reply-to address (specified by
+<code>ClientMessageImpl.REPLYTO_HEADER_NAME</code>).</p>
+<p>A <code>ClientConsumer</code> can be used to consume the management reply and
+retrieve the result of the operation (if any) stored in the reply&apos;s
+body. For portability, results are returned as a <a href="http://json.org" target="_blank">JSON</a>
+String rather than Java Serialization (the
+<code>org.apache.activemq.artemis.api.core.management.ManagementHelper</code> can be used
+to convert the JSON string to Java objects).</p>
+<p>These steps can be simplified to make it easier to invoke management
+operations using Core messages:</p>
+<ol>
+<li><p>Create a <code>ClientRequestor</code> to send messages to the management
+address and receive replies</p>
+</li>
+<li><p>Create a <code>ClientMessage</code></p>
+</li>
+<li><p>Use the helper class
+<code>org.apache.activemq.artemis.api.core.management.ManagementHelper</code> to fill
+the message with the management properties</p>
+</li>
+<li><p>Send the message using the <code>ClientRequestor</code></p>
+</li>
+<li><p>Use the helper class
+<code>org.apache.activemq.artemis.api.core.management.ManagementHelper</code> to
+retrieve the operation result from the management reply</p>
+</li>
+</ol>
+<p>For example, to find out the number of messages in the core queue
+<code>exampleQueue</code>:</p>
+<pre><code class="lang-java">ClientSession session = ...
+ClientRequestor requestor = <span class="hljs-keyword">new</span> ClientRequestor(session, <span class="hljs-string">&quot;jms.queue.activemq.management&quot;</span>);
+ClientMessage message = session.createMessage(<span class="hljs-keyword">false</span>);
+ManagementHelper.putAttribute(message, <span class="hljs-string">&quot;core.queue.exampleQueue&quot;</span>, <span class="hljs-string">&quot;messageCount&quot;</span>);
+session.start();
+ClientMessage reply = requestor.request(m);
+<span class="hljs-keyword">int</span> count = (Integer) ManagementHelper.getResult(reply);
+System.out.println(<span class="hljs-string">&quot;There are &quot;</span> + count + <span class="hljs-string">&quot; messages in exampleQueue&quot;</span>);
+</code></pre>
+<p>Management operation name and parameters must conform to the Java
+interfaces defined in the <code>management</code> packages.</p>
+<p>Names of the resources are built using the helper class
+<code>org.apache.activemq.artemis.api.core.management.ResourceNames</code> and are
+straightforward (<code>core.queue.exampleQueue</code> for the Core Queue
+<code>exampleQueue</code>, <code>jms.topic.exampleTopic</code> for the JMS Topic
+<code>exampleTopic</code>, etc.).</p>
+<h3 id="configuring-core-management">Configuring Core Management</h3>
+<p>The management address to send management messages is configured in
+<code>broker.xml</code>:</p>
+<pre><code>&lt;management-address&gt;jms.queue.activemq.management&lt;/management-address&gt;
+</code></pre><p>By default, the address is <code>jms.queue.activemq.management</code> (it is
+prepended by &quot;jms.queue&quot; so that JMS clients can also send management
+messages).</p>
+<p>The management address requires a <em>special</em> user permission <code>manage</code> to
+be able to receive and handle management messages. This is also
+configured in broker.xml:</p>
+<pre><code>&lt;!-- users with the admin role will be allowed to manage --&gt;
+&lt;!-- Apache ActiveMQ Artemis using management messages        --&gt;
+&lt;security-setting match=&quot;jms.queue.activemq.management&quot;&gt;
+   &lt;permission type=&quot;manage&quot; roles=&quot;admin&quot; /&gt;
+&lt;/security-setting&gt;
+</code></pre><h2 id="using-management-via-jms">Using Management Via JMS</h2>
+<p>Using JMS messages to manage ActiveMQ Artemis is very similar to using core API.</p>
+<p>An important difference is that JMS requires a JMS queue to send the
+messages to (instead of an address for the core API).</p>
+<p>The <em>management queue</em> is a special queue and needs to be instantiated
+directly by the client:</p>
+<pre><code>Queue managementQueue = ActiveMQJMSClient.createQueue(&quot;activemq.management&quot;);
+</code></pre><p>All the other steps are the same than for the Core API but they use JMS
+API instead:</p>
+<ol>
+<li><p>create a <code>QueueRequestor</code> to send messages to the management address
+and receive replies</p>
+</li>
+<li><p>create a <code>Message</code></p>
+</li>
+<li><p>use the helper class
+<code>org.apache.activemq.artemis.api.jms.management.JMSManagementHelper</code> to fill
+the message with the management properties</p>
+</li>
+<li><p>send the message using the <code>QueueRequestor</code></p>
+</li>
+<li><p>use the helper class
+<code>org.apache.activemq.artemis.api.jms.management.JMSManagementHelper</code> to
+retrieve the operation result from the management reply</p>
+</li>
+</ol>
+<p>For example, to know the number of messages in the JMS queue
+<code>exampleQueue</code>:</p>
+<pre><code class="lang-java">Queue managementQueue = ActiveMQJMSClient.createQueue(<span class="hljs-string">&quot;activemq.management&quot;</span>);
+
+QueueSession session = ...
+QueueRequestor requestor = <span class="hljs-keyword">new</span> QueueRequestor(session, managementQueue);
+connection.start();
+Message message = session.createMessage();
+JMSManagementHelper.putAttribute(message, <span class="hljs-string">&quot;jms.queue.exampleQueue&quot;</span>, <span class="hljs-string">&quot;messageCount&quot;</span>);
+Message reply = requestor.request(message);
+<span class="hljs-keyword">int</span> count = (Integer)JMSManagementHelper.getResult(reply);
+System.out.println(<span class="hljs-string">&quot;There are &quot;</span> + count + <span class="hljs-string">&quot; messages in exampleQueue&quot;</span>);
+</code></pre>
+<h3 id="configuring-jms-management">Configuring JMS Management</h3>
+<p>Whether JMS or the core API is used for management, the configuration
+steps are the same (see Configuring Core Management section).</p>
+<h3 id="example">Example</h3>
+<p>See the <a href="examples.html">examples</a> chapter for an example which shows
+how to use JMS messages to manage the Apache ActiveMQ Artemis server.</p>
+<h2 id="management-notifications">Management Notifications</h2>
+<p>Apache ActiveMQ Artemis emits <em>notifications</em> to inform listeners of potentially
+interesting events (creation of new resources, security violation,
+etc.).</p>
+<p>These notifications can be received by 3 different ways:</p>
+<ul>
+<li><p>JMX notifications</p>
+</li>
+<li><p>Core messages</p>
+</li>
+<li><p>JMS messages</p>
+</li>
+</ul>
+<h3 id="jmx-notifications">JMX Notifications</h3>
+<p>If JMX is enabled (see Configuring JMX section), JMX notifications can be received by
+subscribing to 2 MBeans:</p>
+<ul>
+<li><p><code>org.apache.activemq.artemis:type=Broker,brokerName=&lt;broker name&gt;,module=Core,serviceType=Server</code> for notifications on
+<em>Core</em> resources</p>
+</li>
+<li><p><code>org.apache.activemq.artemis:type=Broker,brokerName=&lt;broker name&gt;,module=JMS,serviceType=Server</code> for notifications on
+<em>JMS</em> resources</p>
+</li>
+</ul>
+<h3 id="core-messages-notifications">Core Messages Notifications</h3>
+<p>Apache ActiveMQ Artemis defines a special <em>management notification address</em>. Core
+queues can be bound to this address so that clients will receive
+management notifications as Core messages</p>
+<p>A Core client which wants to receive management notifications must
+create a core queue bound to the management notification address. It can
+then receive the notifications from its queue.</p>
+<p>Notifications messages are regular core messages with additional
+properties corresponding to the notification (its type, when it
+occurred, the resources which were concerned, etc.).</p>
+<p>Since notifications are regular core messages, it is possible to use
+message selectors to filter out notifications and receives only a subset
+of all the notifications emitted by the server.</p>
+<h4 id="configuring-the-core-management-notification-address">Configuring The Core Management Notification Address</h4>
+<p>The management notification address to receive management notifications
+is configured in <code>broker.xml</code>:</p>
+<pre><code>&lt;management-notification-address&gt;activemq.notifications&lt;/management-notification-address&gt;
+</code></pre><p>By default, the address is <code>activemq.notifications</code>.</p>
+<h3 id="jms-messages-notifications">JMS Messages Notifications</h3>
+<p>Apache ActiveMQ Artemis&apos;s notifications can also be received using JMS messages.</p>
+<p>It is similar to receiving notifications using Core API but an important
+difference is that JMS requires a JMS Destination to receive the
+messages (preferably a Topic).</p>
+<p>To use a JMS Destination to receive management notifications, you must
+change the server&apos;s management notification address to start with
+<code>jms.queue</code> if it is a JMS Queue or <code>jms.topic</code> if it is a JMS Topic:</p>
+<pre><code>&lt;!-- notifications will be consumed from &quot;notificationsTopic&quot; JMS Topic --&gt;
+&lt;management-notification-address&gt;jms.topic.notificationsTopic&lt;/management-notification-address&gt;
+</code></pre><p>Once the notification topic is created, you can receive messages from it
+or set a <code>MessageListener</code>:</p>
+<pre><code class="lang-java">Topic notificationsTopic = ActiveMQJMSClient.createTopic(<span class="hljs-string">&quot;notificationsTopic&quot;</span>);
+
+Session session = ...
+MessageConsumer notificationConsumer = session.createConsumer(notificationsTopic);
+notificationConsumer.setMessageListener(<span class="hljs-keyword">new</span> MessageListener()
+{
+   <span class="hljs-function"><span class="hljs-keyword">public</span> <span class="hljs-keyword">void</span> <span class="hljs-title">onMessage</span><span class="hljs-params">(Message notif)</span>
+   </span>{
+      System.out.println(<span class="hljs-string">&quot;------------------------&quot;</span>);
+      System.out.println(<span class="hljs-string">&quot;Received notification:&quot;</span>);
+      <span class="hljs-keyword">try</span>
+      {
+         Enumeration propertyNames = notif.getPropertyNames();
+         <span class="hljs-keyword">while</span> (propertyNames.hasMoreElements())
+         {
+            String propertyName = (String)propertyNames.nextElement();
+            System.out.format(<span class="hljs-string">&quot;  %s: %s\n&quot;</span>, propertyName, notif.getObjectProperty(propertyName));
+         }
+      }
+      <span class="hljs-keyword">catch</span> (JMSException e)
+      {
+      }
+      System.out.println(<span class="hljs-string">&quot;------------------------&quot;</span>);
+   }
+});
+</code></pre>
+<h3 id="example">Example</h3>
+<p>See the <a href="examples.html">examples</a> chapter for an example which shows how to use a JMS <code>MessageListener</code> to receive management notifications from ActiveMQ Artemis server.</p>
+<h3 id="notification-types-and-headers">Notification Types and Headers</h3>
+<p>Below is a list of all the different kinds of notifications as well as
+which headers are on the messages. Every notification has a
+<code>_AMQ_NotifType</code> (value noted in parentheses) and <code>_AMQ_NotifTimestamp</code>
+header. The timestamp is the un-formatted result of a call to
+<code>java.lang.System.currentTimeMillis()</code>.</p>
+<ul>
+<li><p><code>BINDING_ADDED</code> (0)</p>
+<p><code>_AMQ_Binding_Type</code>, <code>_AMQ_Address</code>, <code>_AMQ_ClusterName</code>,
+<code>_AMQ_RoutingName</code>, <code>_AMQ_Binding_ID</code>, <code>_AMQ_Distance</code>,
+<code>_AMQ_FilterString</code></p>
+</li>
+<li><p><code>BINDING_REMOVED</code> (1)</p>
+<p><code>_AMQ_Address</code>, <code>_AMQ_ClusterName</code>, <code>_AMQ_RoutingName</code>,
+<code>_AMQ_Binding_ID</code>, <code>_AMQ_Distance</code>, <code>_AMQ_FilterString</code></p>
+</li>
+<li><p><code>CONSUMER_CREATED</code> (2)</p>
+<p><code>_AMQ_Address</code>, <code>_AMQ_ClusterName</code>, <code>_AMQ_RoutingName</code>, <code>_AMQ_Distance</code>,
+<code>_AMQ_ConsumerCount</code>, <code>_AMQ_User</code>, <code>_AMQ_RemoteAddress</code>,
+<code>_AMQ_SessionName</code>, <code>_AMQ_FilterString</code></p>
+</li>
+<li><p><code>CONSUMER_CLOSED</code> (3)</p>
+<p><code>_AMQ_Address</code>, <code>_AMQ_ClusterName</code>, <code>_AMQ_RoutingName</code>, <code>_AMQ_Distance</code>,
+<code>_AMQ_ConsumerCount</code>, <code>_AMQ_User</code>, <code>_AMQ_RemoteAddress</code>,
+<code>_AMQ_SessionName</code>, <code>_AMQ_FilterString</code></p>
+</li>
+<li><p><code>SECURITY_AUTHENTICATION_VIOLATION</code> (6)</p>
+<p><code>_AMQ_User</code></p>
+</li>
+<li><p><code>SECURITY_PERMISSION_VIOLATION</code> (7)</p>
+<p><code>_AMQ_Address</code>, <code>_AMQ_CheckType</code>, <code>_AMQ_User</code></p>
+</li>
+<li><p><code>DISCOVERY_GROUP_STARTED</code> (8)</p>
+<p><code>name</code></p>
+</li>
+<li><p><code>DISCOVERY_GROUP_STOPPED</code> (9)</p>
+<p><code>name</code></p>
+</li>
+<li><p><code>BROADCAST_GROUP_STARTED</code> (10)</p>
+<p><code>name</code></p>
+</li>
+<li><p><code>BROADCAST_GROUP_STOPPED</code> (11)</p>
+<p><code>name</code></p>
+</li>
+<li><p><code>BRIDGE_STARTED</code> (12)</p>
+<p><code>name</code></p>
+</li>
+<li><p><code>BRIDGE_STOPPED</code> (13)</p>
+<p><code>name</code></p>
+</li>
+<li><p><code>CLUSTER_CONNECTION_STARTED</code> (14)</p>
+<p><code>name</code></p>
+</li>
+<li><p><code>CLUSTER_CONNECTION_STOPPED</code> (15)</p>
+<p><code>name</code></p>
+</li>
+<li><p><code>ACCEPTOR_STARTED</code> (16)</p>
+<p><code>factory</code>, <code>id</code></p>
+</li>
+<li><p><code>ACCEPTOR_STOPPED</code> (17)</p>
+<p><code>factory</code>, <code>id</code></p>
+</li>
+<li><p><code>PROPOSAL</code> (18)</p>
+<p><code>_JBM_ProposalGroupId</code>, <code>_JBM_ProposalValue</code>, <code>_AMQ_Binding_Type</code>,
+<code>_AMQ_Address</code>, <code>_AMQ_Distance</code></p>
+</li>
+<li><p><code>PROPOSAL_RESPONSE</code> (19)</p>
+<p><code>_JBM_ProposalGroupId</code>, <code>_JBM_ProposalValue</code>,
+<code>_JBM_ProposalAltValue</code>, <code>_AMQ_Binding_Type</code>, <code>_AMQ_Address</code>,
+<code>_AMQ_Distance</code></p>
+</li>
+<li><p><code>CONSUMER_SLOW</code> (21)</p>
+<p><code>_AMQ_Address</code>, <code>_AMQ_ConsumerCount</code>, <code>_AMQ_RemoteAddress</code>,
+<code>_AMQ_ConnectionName</code>, <code>_AMQ_ConsumerName</code>, <code>_AMQ_SessionName</code></p>
+</li>
+</ul>
+<h2 id="message-counters">Message Counters</h2>
+<p>Message counters can be used to obtain information on queues <em>over time</em>
+as Apache ActiveMQ Artemis keeps a history on queue metrics.</p>
+<p>They can be used to show <em>trends</em> on queues. For example, using the
+management API, it would be possible to query the number of messages in
+a queue at regular interval. However, this would not be enough to know
+if the queue is used: the number of messages can remain constant because
+nobody is sending or receiving messages from the queue or because there
+are as many messages sent to the queue than messages consumed from it.
+The number of messages in the queue remains the same in both cases but
+its use is widely different.</p>
+<p>Message counters gives additional information about the queues:</p>
+<ul>
+<li><p><code>count</code></p>
+<p>The <em>total</em> number of messages added to the queue since the server
+was started</p>
+</li>
+<li><p><code>countDelta</code></p>
+<p>the number of messages added to the queue <em>since the last message
+counter update</em></p>
+</li>
+<li><p><code>messageCount</code></p>
+<p>The <em>current</em> number of messages in the queue</p>
+</li>
+<li><p><code>messageCountDelta</code></p>
+<p>The <em>overall</em> number of messages added/removed from the queue <em>since
+the last message counter update</em>. For example, if
+<code>messageCountDelta</code> is equal to <code>-10</code> this means that overall 10
+messages have been removed from the queue (e.g. 2 messages were
+added and 12 were removed)</p>
+</li>
+<li><p><code>lastAddTimestamp</code></p>
+<p>The timestamp of the last time a message was added to the queue</p>
+</li>
+<li><p><code>udpateTimestamp</code></p>
+<p>The timestamp of the last message counter update</p>
+</li>
+</ul>
+<p>These attributes can be used to determine other meaningful data as well.
+For example, to know specifically how many messages were <em>consumed</em> from
+the queue since the last update simply subtract the <code>messageCountDelta</code>
+from <code>countDelta</code>.</p>
+<h3 id="configuring-message-counters">Configuring Message Counters</h3>
+<p>By default, message counters are disabled as it might have a small
+negative effect on memory.</p>
+<p>To enable message counters, you can set it to <code>true</code> in
+<code>broker.xml</code>:</p>
+<pre><code>&lt;message-counter-enabled&gt;true&lt;/message-counter-enabled&gt;
+</code></pre><p>Message counters keeps a history of the queue metrics (10 days by
+default) and samples all the queues at regular interval (10 seconds by
+default). If message counters are enabled, these values should be
+configured to suit your messaging use case in
+<code>broker.xml</code>:</p>
+<pre><code>&lt;!-- keep history for a week --&gt;
+&lt;message-counter-max-day-history&gt;7&lt;/message-counter-max-day-history&gt;
+&lt;!-- sample the queues every minute (60000ms) --&gt;
+&lt;message-counter-sample-period&gt;60000&lt;/message-counter-sample-period&gt;
+</code></pre><p>Message counters can be retrieved using the Management API. For example,
+to retrieve message counters on a JMS Queue using JMX:</p>
+<pre><code class="lang-java"><span class="hljs-comment">// retrieve a connection to Apache ActiveMQ Artemis&apos;s MBeanServer</span>
+MBeanServerConnection mbsc = ...
+JMSQueueControlMBean queueControl = (JMSQueueControl)MBeanServerInvocationHandler.newProxyInstance(mbsc,
+   on,
+   JMSQueueControl.class,
+   <span class="hljs-keyword">false</span>);
+<span class="hljs-comment">// message counters are retrieved as a JSON String</span>
+String counters = queueControl.listMessageCounter();
+<span class="hljs-comment">// use the MessageCounterInfo helper class to manipulate message counters more easily</span>
+MessageCounterInfo messageCounter = MessageCounterInfo.fromJSON(counters);
+System.out.format(<span class="hljs-string">&quot;%s message(s) in the queue (since last sample: %s)\n&quot;</span>,
+messageCounter.getMessageCount(),
+messageCounter.getMessageCountDelta());
+</code></pre>
+<h3 id="example">Example</h3>
+<p>See the <a href="examples.html">examples</a> chapter for an example which shows how to use message counters to retrieve information on a JMS <code>Queue</code>.</p>
+
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