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Posted to commits@karaf.apache.org by jb...@apache.org on 2018/02/07 06:25:00 UTC
svn commit: r1823428 [4/8] - in
/karaf/site/production/manual/decanter/latest-2: ./ dev-guide/ user-guide/
Added: karaf/site/production/manual/decanter/latest-2/collectors.html
URL: http://svn.apache.org/viewvc/karaf/site/production/manual/decanter/latest-2/collectors.html?rev=1823428&view=auto
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--- karaf/site/production/manual/decanter/latest-2/collectors.html (added)
+++ karaf/site/production/manual/decanter/latest-2/collectors.html Wed Feb 7 06:25:00 2018
@@ -0,0 +1,1387 @@
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+<body class="article">
+<div id="header">
+<div id="toc" class="toc">
+<div id="toctitle">Table of Contents</div>
+<ul class="sectlevel2">
+<li><a href="#_collectors">Collectors</a></li>
+</ul>
+</div>
+</div>
+<div id="content">
+<div class="sect2">
+<h3 id="_collectors">Collectors</h3>
+<div class="paragraph">
+<p>Decanter collectors harvest the monitoring data, and send this data to the Decanter appenders.</p>
+</div>
+<div class="paragraph">
+<p>Two kinds of collector are available:</p>
+</div>
+<div class="ulist">
+<ul>
+<li>
+<p>Event Driven Collectors react to events and "broadcast" the data to the appenders.</p>
+</li>
+<li>
+<p>Polled Collectors are periodically executed by the Decanter Scheduler. When executed, the collectors harvest the
+data and send to the appenders.</p>
+</li>
+</ul>
+</div>
+<div class="sect3">
+<h4 id="_log">Log</h4>
+<div class="paragraph">
+<p>The Decanter Log Collector is an event driven collector. It automatically reacts when a log occurs, and
+send the log details (level, logger name, message, etc) to the appenders.</p>
+</div>
+<div class="paragraph">
+<p>The <code>decanter-collector-log</code> feature installs the log collector:</p>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre>karaf@root()> feature:install decanter-collector-log</pre>
+</div>
+</div>
+<div class="paragraph">
+<p>The log collector doesn’t need any configuration, the installation of the decanter-collector-log feature is enough.</p>
+</div>
+<div class="admonitionblock note">
+<table>
+<tr>
+<td class="icon">
+<div class="title">Note</div>
+</td>
+<td class="content">
+<div class="paragraph">
+<p>The Decanter log collector is using <code>osgi:DecanterLogCollectorAppender</code> appender.
+In order to work, your Apache Karaf Pax Logging configuration should contain this appender.</p>
+</div>
+<div class="paragraph">
+<p>The default Apache Karaf <code>etc/org.ops4j.pax.logging.cfg</code> configuration file is already fine:</p>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre>log4j.rootLogger = DEBUG, out, osgi:*</pre>
+</div>
+</div>
+<div class="paragraph">
+<p>If you want, you can explicitly specify the <code>DecanterLogCollectorAppender</code> appender:</p>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre>log4j.rootLogger = DEBUG, out, osgi:DecanterLogCollectorAppender, osgi:VmLogAppender</pre>
+</div>
+</div>
+</td>
+</tr>
+</table>
+</div>
+</div>
+<div class="sect3">
+<h4 id="_cxf_logging_feature_integration">CXF Logging feature integration</h4>
+<div class="paragraph">
+<p>The <a href="http://cxf.apache.org/docs/message-logging.html">CXF message logging</a> nicely integrates with Decanter. Simply add the <a href="https://github.com/apache/cxf/blob/master/rt/features/logging/src/main/java/org/apache/cxf/ext/logging/LoggingFeature.java">org.apache.cxf.ext.logging.LoggingFeature</a> to your service.</p>
+</div>
+<div class="paragraph">
+<p>This will automatically log the messages from all clients and endpoints to slf4j. All meta data can be found in the MDC attributes. The message logging can be switched on/off per service using the org.ops4j.pax.logging.cfg.</p>
+</div>
+<div class="paragraph">
+<p>When using with Decanter make sure you enable the log collector to actually process the message logs.</p>
+</div>
+</div>
+<div class="sect3">
+<h4 id="_log_socket">Log Socket</h4>
+<div class="paragraph">
+<p>The Decanter Log Socket Collector is an event driven collector. It creates a socket, waiting for incoming event. The expected
+events are log4j LoggingEvent. The log4j LoggingEvent is transformed as a Map containing the log details (level, logger name, message, …​).
+This Map is sent to the appenders.</p>
+</div>
+<div class="paragraph">
+<p>The collector allows you to remotely use Decanter. For instance, you can have an application running on a different platform (spring-boot,
+application servers, …​). This application can use a log4j socket appender that send the logging events to the Decanter
+log socket collector.</p>
+</div>
+<div class="paragraph">
+<p>The <code>decanter-collector-log-socket</code> feature install the log socket collector:</p>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre>karaf@root()> feature:install decanter-collector-log-socket</pre>
+</div>
+</div>
+<div class="paragraph">
+<p>This feature installs the collector and a default <code>etc/org.apache.karaf.decanter.collector.log.socket.cfg</code> configuration file
+containing:</p>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre>#
+# Decanter Log/Log4j Socket collector configuration
+#
+
+#port=4560
+#workers=10</pre>
+</div>
+</div>
+<div class="ulist">
+<ul>
+<li>
+<p>the <code>port</code>Â property defines the port number where the collector is bound and listen for incoming logging event. Default is 4560.</p>
+</li>
+<li>
+<p>the <code>workers</code> properties defines the number of threads (workers) which can deal with multiple clients in the same time.</p>
+</li>
+</ul>
+</div>
+</div>
+<div class="sect3">
+<h4 id="_file">File</h4>
+<div class="paragraph">
+<p>The Decanter File Collector is an event driven collector. It automatically reacts when new lines are appended into
+a file (especially a log file). It acts like the tail Unix command. Basically, it’s an alternative to the log collector.
+The log collector reacts for local Karaf log messages, whereas the file collector can react to any files, included log
+file from other system than Karaf. It means that you can monitor and send collected data for any system (even not Java
+base, or whatever).</p>
+</div>
+<div class="paragraph">
+<p>The file collector deals with file rotation, file not found.</p>
+</div>
+<div class="paragraph">
+<p>The <code>decanter-collector-file</code> feature installs the file collector:</p>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre>karaf@root()> feature:install decanter-collector-file</pre>
+</div>
+</div>
+<div class="paragraph">
+<p>Now, you have to create a configuration file for each file that you want to monitor. In the etc folder, you have to
+create a file with the following format name <code>etc/org.apache.karaf.decanter.collector.file-ID.cfg</code> where ID is an ID
+of your choice.</p>
+</div>
+<div class="paragraph">
+<p>This file contains:</p>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre>type=my
+path=/path/to/file
+any=value</pre>
+</div>
+</div>
+<div class="ulist">
+<ul>
+<li>
+<p><code>type</code> is an ID (mandatory) that allows you to easily identify the monitored file</p>
+</li>
+<li>
+<p><code>path</code> is the location of the file that you want to monitore</p>
+</li>
+<li>
+<p>all other values (like <code>any</code>) will be part of the collected data. It means that you can add your own custom data, and
+easily create queries bases on this data.</p>
+</li>
+</ul>
+</div>
+<div class="paragraph">
+<p>For instance, instead of the log collector, you can create the following <code>etc/org.apache.karaf.decanter.collector.file-karaf.cfg</code>
+file collector configuration file:</p>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre>type=karaf-log-file
+path=/path/to/karaf/data/log/karaf.log
+my=stuff</pre>
+</div>
+</div>
+<div class="paragraph">
+<p>The file collector will tail on karaf.log file, and send any new line in this log file as collected data.</p>
+</div>
+</div>
+<div class="sect3">
+<h4 id="_eventadmin">EventAdmin</h4>
+<div class="paragraph">
+<p>The Decanter EventAdmin Collector is an event-driven collector, listening for all internal events happening in
+the Apache Karaf Container.</p>
+</div>
+<div class="admonitionblock note">
+<table>
+<tr>
+<td class="icon">
+<div class="title">Note</div>
+</td>
+<td class="content">
+<div class="paragraph">
+<p>It’s the perfect way to audit all actions performed on resources (features, bundles, configurations, …​) by users
+(via local shell console, SSH, or JMX).</p>
+</div>
+<div class="paragraph">
+<p>We recommend to use this collector to implement users and actions auditing.</p>
+</div>
+</td>
+</tr>
+</table>
+</div>
+<div class="paragraph">
+<p>The <code>decanter-collector-eventadmin</code> feature installs the eventadmin collector:</p>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre>karaf@root()> feature:install decanter-collector-eventadmin</pre>
+</div>
+</div>
+<div class="paragraph">
+<p>By default, the eventadmin collector is listening for all OSGi framework and Karaf internal events.</p>
+</div>
+<div class="paragraph">
+<p>You can specify additional events to trap by providing a `etc/org.apache.karaf.decanter.collector.eventadmin-my.cfg' configuration
+file, containing the EventAdmin topics you want to listen:</p>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre>event.topics=my/*</pre>
+</div>
+</div>
+<div class="admonitionblock note">
+<table>
+<tr>
+<td class="icon">
+<div class="title">Note</div>
+</td>
+<td class="content">
+<div class="paragraph">
+<p>By default, the events contain timestamp and subject.
+You can disable this by modifying <code>etc/org.apache.felix.eventadmin.impl.EventAdmin</code> configuration file:</p>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre>org.apache.felix.eventadmin.AddTimestamp=true
+org.apache.felix.eventadmin.AddSubject=true</pre>
+</div>
+</div>
+</td>
+</tr>
+</table>
+</div>
+</div>
+<div class="sect3">
+<h4 id="_jmx">JMX</h4>
+<div class="paragraph">
+<p>The Decanter JMX Collector is a polled collector, executed periodically by the Decanter Scheduler.</p>
+</div>
+<div class="paragraph">
+<p>The JMX collector connects to a JMX MBeanServer (local or remote), and retrieves all attributes of each available MBeans.
+The JMX metrics (attribute values) are send to the appenders.</p>
+</div>
+<div class="paragraph">
+<p>The <code>decanter-collector-jmx</code> feature installs the JMX collector, and a default configuration file:</p>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre>karaf@root()> feature:install decanter-collector-jmx</pre>
+</div>
+</div>
+<div class="paragraph">
+<p>This feature brings a <code>etc/org.apache.karaf.decanter.collector.jmx-local.cfg</code> configuration file containing:</p>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre>#
+# Decanter Local JMX collector configuration
+#
+
+# Name/type of the JMX collection
+type=jmx-local
+
+# URL of the JMX MBeanServer.
+# local keyword means the local platform MBeanServer or you can specify to full JMX URL
+# like service:jmx:rmi:///jndi/rmi://hostname:port/karaf-instance
+url=local
+
+# Username to connect to the JMX MBeanServer
+#username=karaf
+
+# Password to connect to the JMX MBeanServer
+#password=karaf
+
+# Object name filter to use. Instead of harvesting all MBeans, you can select only
+# some MBeans matching the object name filter
+#object.name=org.apache.camel:context=*,type=routes,name=*
+
+# Several object names can also be specified.
+# What matters is that the property names begin with "object.name".
+#object.name.system=java.lang:*
+#object.name.karaf=org.apache.karaf:type=http,name=*
+#object.name.3=org.apache.activemq:*</pre>
+</div>
+</div>
+<div class="paragraph">
+<p>This file harvests the data of the local MBeanServer:</p>
+</div>
+<div class="ulist">
+<ul>
+<li>
+<p>the <code>type</code> property is a name (of your choice) allowing you to easily identify the harvested data</p>
+</li>
+<li>
+<p>the <code>url</code> property is the MBeanServer to connect. "local" is reserved keyword to specify the local MBeanServer.
+Instead of "local", you can use the JMX service URL. For instance, for Karaf version 3.0.0, 3.0.1, 3.0.2, and 3.0.3,
+as the local MBeanServer is secured, you can specify <code>service:jmx:rmi:///jndi/rmi://localhost:1099/karaf-root</code>. You
+can also polled any remote MBean server (Karaf based or not) providing the service URL.</p>
+</li>
+<li>
+<p>the <code>username</code> property contains the username to connect to the MBean server. It’s only required if the MBean server
+is secured.</p>
+</li>
+<li>
+<p>the <code>password</code> property contains the password to connect to the MBean server. It’s only required if the MBean server
+is secured.</p>
+</li>
+<li>
+<p>the <code>object.name</code> property is optional. If this property is not specified, the collector will retrieve the attributes
+of all MBeans. You can filter to consider only some MBeans. This property contains the ObjectName filter to retrieve
+the attributes only to some MBeans. Several object names can be listed, provided the property prefix is <code>object.name.</code>.</p>
+</li>
+<li>
+<p>any other values will be part of the collected data. It means that you can add your own property if you want to add
+additional data, and create queries based on this data.</p>
+</li>
+</ul>
+</div>
+<div class="paragraph">
+<p>You can retrieve multiple MBean servers. For that, you just create a new configuration file using the file name format
+<code>etc/org.apache.karaf.decanter.collector.jmx-[ANYNAME].cfg</code>.</p>
+</div>
+</div>
+<div class="sect3">
+<h4 id="_activemq_jmx">ActiveMQ (JMX)</h4>
+<div class="paragraph">
+<p>The ActiveMQ JMX collector is just a special configuration of the JMX collector.</p>
+</div>
+<div class="paragraph">
+<p>The <code>decanter-collector-activemq</code> feature installs the default JMX collector, with the specific ActiveMQ JMX configuration:</p>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre>karaf@root()> feature:install decanter-collector-jmx-activemq</pre>
+</div>
+</div>
+<div class="paragraph">
+<p>This feature installs the same collector as the <code>decanter-collector-jmx</code>, but also add the
+<code>etc/org.apache.karaf.decanter.collector.jmx-activemq.cfg</code> configuration file.</p>
+</div>
+<div class="paragraph">
+<p>This file contains:</p>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre>#
+# Decanter Local ActiveMQ JMX collector configuration
+#
+
+# Name/type of the JMX collection
+type=jmx-activemq
+
+# URL of the JMX MBeanServer.
+# local keyword means the local platform MBeanServer or you can specify to full JMX URL
+# like service:jmx:rmi:///jndi/rmi://hostname:port/karaf-instance
+url=local
+
+# Username to connect to the JMX MBeanServer
+#username=karaf
+
+# Password to connect to the JMX MBeanServer
+#password=karaf
+
+# Object name filter to use. Instead of harvesting all MBeans, you can select only
+# some MBeans matching the object name filter
+object.name=org.apache.activemq:*</pre>
+</div>
+</div>
+<div class="paragraph">
+<p>This configuration actually contains a filter to retrieve only the ActiveMQ JMX MBeans.</p>
+</div>
+</div>
+<div class="sect3">
+<h4 id="_camel_jmx">Camel (JMX)</h4>
+<div class="paragraph">
+<p>The Camel JMX collector is just a special configuration of the JMX collector.</p>
+</div>
+<div class="paragraph">
+<p>The <code>decanter-collector-jmx-camel</code> feature installs the default JMX collector, with the specific Camel JMX configuration:</p>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre>karaf@root()> feature:install decanter-collector-jmx-camel</pre>
+</div>
+</div>
+<div class="paragraph">
+<p>This feature installs the same collector as the <code>decanter-collector-jmx</code>, but also add the
+<code>etc/org.apache.karaf.decanter.collector.jmx-camel.cfg</code> configuration file.</p>
+</div>
+<div class="paragraph">
+<p>This file contains:</p>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre>#
+# Decanter Local Camel JMX collector configuration
+#
+
+# Name/type of the JMX collection
+type=jmx-camel
+
+# URL of the JMX MBeanServer.
+# local keyword means the local platform MBeanServer or you can specify to full JMX URL
+# like service:jmx:rmi:///jndi/rmi://hostname:port/karaf-instance
+url=local
+
+# Username to connect to the JMX MBeanServer
+#username=karaf
+
+# Password to connect to the JMX MBeanServer
+#password=karaf
+
+# Object name filter to use. Instead of harvesting all MBeans, you can select only
+# some MBeans matching the object name filter
+object.name=org.apache.camel:context=*,type=routes,name=*</pre>
+</div>
+</div>
+<div class="paragraph">
+<p>This configuration actually contains a filter to retrieve only the Camel Routes JMX MBeans.</p>
+</div>
+</div>
+<div class="sect3">
+<h4 id="_camel_tracer_notifier">Camel Tracer & Notifier</h4>
+<div class="paragraph">
+<p>Decanter provides a Camel Tracer Handler that you can set on a Camel Tracer. It also provides a Camel Event Notifier.</p>
+</div>
+<div class="sect4">
+<h5 id="_camel_tracer">Camel Tracer</h5>
+<div class="paragraph">
+<p>If you enable the tracer on a Camel route, all tracer events (exchanges on each step of the route) are send to the
+appenders.</p>
+</div>
+<div class="paragraph">
+<p>The <code>decanter-collector-camel</code> feature provides the Camel Tracer Handler:</p>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre>karaf@root()> feature:install decanter-collector-camel</pre>
+</div>
+</div>
+<div class="paragraph">
+<p>Now, you can use the Decanter Camel Tracer Handler in a tracer that you can use in routes.</p>
+</div>
+<div class="paragraph">
+<p>For instance, the following route definition shows how to enable tracer on a route, and use the Decanter Tracer Handler
+in the Camel Tracer:</p>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre><?xml version="1.0" encoding="UTF-8"?>
+<blueprint xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0">
+
+ <reference id="dispatcher" interface="org.osgi.service.event.EventAdmin"/>
+
+ <bean id="traceHandler" class="org.apache.karaf.decanter.collector.camel.DecanterTraceEventHandler">
+ <property name="dispatcher" ref="dispatcher"/>
+ </bean>
+
+ <bean id="tracer" class="org.apache.camel.processor.interceptor.Tracer">
+ <property name="traceHandler" ref="traceHandler"/>
+ <property name="enabled" value="true"/>
+ <property name="traceOutExchanges" value="true"/>
+ <property name="logLevel" value="OFF"/>
+ </bean>
+
+ <camelContext trace="true" xmlns="http://camel.apache.org/schema/blueprint">
+ <route id="test">
+ <from uri="timer:fire?period=10000"/>
+ <setBody><constant>Hello World</constant></setBody>
+ <to uri="log:test"/>
+ </route>
+ </camelContext>
+
+</blueprint></pre>
+</div>
+</div>
+<div class="paragraph">
+<p>You can extend the Decanter event with any property using a custom <code>DecanterCamelEventExtender</code>:</p>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre>public interface DecanterCamelEventExtender {
+
+ void extend(Map<String, Object> decanterData, Exchange camelExchange);
+
+}</pre>
+</div>
+</div>
+<div class="paragraph">
+<p>You can inject your extender using <code>setExtender(myExtender)</code> on the <code>DecanterTraceEventHandler</code>. Decanter will automatically
+call your extender to populate extra properties.</p>
+</div>
+</div>
+<div class="sect4">
+<h5 id="_camel_event_notifier">Camel Event Notifier</h5>
+<div class="paragraph">
+<p>Decanter also provides <code>DecanterEventNotifier</code> implementing a Camel event notifier: <a href="http://camel.apache.org/eventnotifier-to-log-details-about-all-sent-exchanges.html" class="bare">http://camel.apache.org/eventnotifier-to-log-details-about-all-sent-exchanges.html</a></p>
+</div>
+<div class="paragraph">
+<p>It’s very similar to the Decanter Camel Tracer. You can control the camel contexts and routes to which you want to trap event.</p>
+</div>
+</div>
+</div>
+<div class="sect3">
+<h4 id="_system">System</h4>
+<div class="paragraph">
+<p>The system collector is a polled collector (periodically executed by the Decanter Scheduler).</p>
+</div>
+<div class="paragraph">
+<p>This collector executes operating system commands (or scripts) and send the execution output to the appenders.</p>
+</div>
+<div class="paragraph">
+<p>The <code>decanter-collector-system</code> feature installs the system collector:</p>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre>karaf@root()> feature:install decanter-collector-system</pre>
+</div>
+</div>
+<div class="paragraph">
+<p>This feature installs a default <code>etc/org.apache.karaf.decanter.collector.system.cfg</code> configuration file containing:</p>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre>#
+# Decanter OperationSystem Collector configuration
+#
+
+# This collector executes system commands, retrieve the exec output/err
+#Â sent to the appenders
+#
+# The format is command.key=command_to_execute
+# where command is a reserved keyword used to identify a command property
+# for instance:
+#
+# command.df=df -h
+# command.free=free
+#
+# You can also create a script containing command like:
+#
+# df -k / | awk -F " |%" '/dev/{print $8}'
+#
+# This script will get the available space on the / filesystem for instance.
+# and call the script:
+#
+# command.df=/bin/script
+#
+# Another example of script to get the temperature:
+#
+# sensors|grep temp1|awk '{print $2}'|cut -b2,3,4,5
+#</pre>
+</div>
+</div>
+<div class="paragraph">
+<p>You can add the commands that you want to execute using the format:</p>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre>command.name=system_command</pre>
+</div>
+</div>
+<div class="paragraph">
+<p>The collector will execute each command described in this file, and send the execution output to the appenders.</p>
+</div>
+<div class="paragraph">
+<p>For instance, if you want to periodically send the free space available on the / filesystem, you can add:</p>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre>command.df=df -k / | awk -F " |%" '/dev/{print $8}'</pre>
+</div>
+</div>
+</div>
+<div class="sect3">
+<h4 id="_network_socket">Network socket</h4>
+<div class="paragraph">
+<p>The Decanter network socket collector listens for incoming messages coming from a remote network socket collector.</p>
+</div>
+<div class="paragraph">
+<p>The <code>decanter-collector-socket</code> feature installs the network socket collector:</p>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre>karaf@root()> feature:install decanter-collector-socket</pre>
+</div>
+</div>
+<div class="paragraph">
+<p>This feature installs a default <code>etc/org.apache.karaf.decanter.collector.socket.cfg</code> configuration file containing:</p>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre># Decanter Socket Collector
+
+# Port number on which to listen
+#port=34343
+
+# Number of worker threads to deal with
+#workers=10
+
+# Protocol tcp(default) or udp
+#protocol=tcp
+
+# Unmarshaller to use
+# Unmarshaller is identified by data format. The default is json, but you can use another unmarshaller
+unmarshaller.target=(dataFormat=json)</pre>
+</div>
+</div>
+<div class="ulist">
+<ul>
+<li>
+<p>the <code>port</code> property contains the port number where the network socket collector is listening</p>
+</li>
+<li>
+<p>the <code>workers</code> property contains the number of worker thread the socket collector is using for connection</p>
+</li>
+<li>
+<p>the <code>protocol</code> property contains the protocol used by the collector for transferring data with the client</p>
+</li>
+<li>
+<p>the <code>unmarshaller.target</code> property contains the unmarshaller used by the collector to transform the data
+sended by the client.</p>
+</li>
+</ul>
+</div>
+</div>
+<div class="sect3">
+<h4 id="_jms">JMS</h4>
+<div class="paragraph">
+<p>The Decanter JMS collector consumes the data from a JMS queue or topic. It’s a way to aggregate collected data coming
+from remote and several machines.</p>
+</div>
+<div class="paragraph">
+<p>The <code>decanter-collector-jms</code> feature installs the JMS collector:</p>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre>karaf@root()> feature:install decanter-collector-jms</pre>
+</div>
+</div>
+<div class="paragraph">
+<p>This feature also installs a default <code>etc/org.apache.karaf.decanter.collector.jms.cfg</code> configuration file containing:</p>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre>######################################
+# Decanter JMS Collector Configuration
+######################################
+
+# Name of the JMS connection factory
+connection.factory.name=jms/decanter
+
+# Name of the destination
+destination.name=decanter
+
+# Type of the destination (queue or topic)
+destination.type=queue
+
+# Connection username
+# username=
+
+# Connection password
+# password=</pre>
+</div>
+</div>
+<div class="ulist">
+<ul>
+<li>
+<p>the <code>connection.factory.name</code> is the name of the ConnectionFactory OSGi service to use</p>
+</li>
+<li>
+<p>the <code>destination.name</code> is the name of the queue or topic where to consume messages from the JMS broker</p>
+</li>
+<li>
+<p>the <code>destination.type</code> is the type of the destination (queue or topic)</p>
+</li>
+<li>
+<p>the <code>username</code> and <code>password</code> properties are the credentials to use with a secured connection factory</p>
+</li>
+</ul>
+</div>
+</div>
+<div class="sect3">
+<h4 id="_mqtt">MQTT</h4>
+<div class="paragraph">
+<p>The Decanter MQTT collector receives collected messages from a MQTT broker. It’s a way to aggregate collected data coming
+from remote and several machines.</p>
+</div>
+<div class="paragraph">
+<p>The <code>decanter-collector-mqtt</code> feature installs the MQTT collector:</p>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre>karaf@root()> feature:install decanter-collector-mqtt</pre>
+</div>
+</div>
+<div class="paragraph">
+<p>This feature also installs a default <code>etc/org.apache.karaf.decanter.collector.mqtt.cfg</code> configuration file containing:</p>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre>#######################################
+# Decanter MQTT Collector Configuration
+#######################################
+
+# URI of the MQTT broker
+server.uri=tcp://localhost:61616
+
+# MQTT Client ID
+client.id=decanter
+
+# MQTT topic name
+topic=decanter</pre>
+</div>
+</div>
+<div class="ulist">
+<ul>
+<li>
+<p>the <code>server.uri</code> is the location of the MQTT broker</p>
+</li>
+<li>
+<p>the <code>client.id</code> is the Decanter MQTT client ID</p>
+</li>
+<li>
+<p>the <code>topic</code> is the MQTT topic pattern where to receive the messages</p>
+</li>
+</ul>
+</div>
+</div>
+<div class="sect3">
+<h4 id="_kafka">Kafka</h4>
+<div class="paragraph">
+<p>The Decanter Kafka collector receives collected messages from a Kafka broker. It’s a way to aggregate collected data coming
+from remote and several machines.</p>
+</div>
+<div class="paragraph">
+<p>The <code>decanter-collector-kafka</code> feature installs the Kafka collector:</p>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre>karaf@root()> feature:install decanter-collector-kafka</pre>
+</div>
+</div>
+<div class="paragraph">
+<p>This feature also installs a default <code>etc/org.apache.karaf.decanter.collector.kafka.cfg</code> configuration file containing:</p>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre>###############################
+# Decanter Kafka Configuration
+###############################
+
+# A list of host/port pairs to use for establishing the initial connection to the Kafka cluster
+#bootstrap.servers=localhost:9092
+
+# An id string to identify the group where the consumer belongs to
+#group.id=decanter
+
+# Enable auto commit of consumed messages
+#enable.auto.commit=true
+
+# Auto commit interval (in ms) triggering the commit
+#auto.commit.interval.ms=1000
+
+# Timeout on the consumer session
+#session.timeout.ms=30000
+
+#Â Serializer class for key that implements the Serializer interface
+#key.serializer=org.apache.kafka.common.serialization.StringSerializer
+
+#Â Serializer class for value that implements the Serializer interface.
+#value.serializer=org.apache.kafka.common.serialization.StringSerializer
+
+# Name of the topic
+#topic=decanter
+
+# Security (SSL)
+#security.protocol=SSL
+
+# SSL truststore location (Kafka broker) and password
+#ssl.truststore.location=${karaf.etc}/keystores/keystore.jks
+#ssl.truststore.password=karaf
+
+# SSL keystore (if client authentication is required)
+#ssl.keystore.location=${karaf.etc}/keystores/clientstore.jks
+#ssl.keystore.password=karaf
+#ssl.key.password=karaf
+
+# (Optional) SSL provider (default uses the JVM one)
+#ssl.provider=
+
+# (Optional) SSL Cipher suites
+#ssl.cipher.suites=
+
+#Â (Optional) SSL Protocols enabled (default is TLSv1.2,TLSv1.1,TLSv1)
+#ssl.enabled.protocols=TLSv1.2,TLSv1.1,TLSv1
+
+# (Optional) SSL Truststore type (default is JKS)
+#ssl.truststore.type=JKS
+
+# (Optional) SSL Keystore type (default is JKS)
+#ssl.keystore.type=JKS
+
+# Security (SASL)
+#Â For SASL, you have to configure Java System property as explained in http://kafka.apache.org/documentation.html#security_ssl</pre>
+</div>
+</div>
+<div class="paragraph">
+<p>The configuration is similar to the Decanter Kafka appender. Please, see Kafka collector for details.</p>
+</div>
+</div>
+<div class="sect3">
+<h4 id="_rest_servlet">Rest Servlet</h4>
+<div class="paragraph">
+<p>The Decanter Rest Servlet collector registers a servlet on the OSGi HTTP service (by default on <code>/decanter/collect</code>).</p>
+</div>
+<div class="paragraph">
+<p>It listens for incoming collected messages on this servlet.</p>
+</div>
+<div class="paragraph">
+<p>The <code>decanter-collector-rest-servlet</code> feature installs the collector:</p>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre>karaf@root()> feature:install decanter-collector-rest-servlet</pre>
+</div>
+</div>
+</div>
+<div class="sect3">
+<h4 id="_dropwizard_metrics">Dropwizard Metrics</h4>
+<div class="paragraph">
+<p>The Decanter Dropwizard Metrics collector get a <code>MetricSet</code> OSGi service and periodically get the metrics in the set.</p>
+</div>
+<div class="paragraph">
+<p>The <code>decanter-collector-dropwizard</code> feature installs the collector:</p>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre>karaf@root()> feature:install decanter-collector-dropwizard</pre>
+</div>
+</div>
+<div class="paragraph">
+<p>As soon as a <code>MetricSet</code> (like <code>MetricRegistry</code>) service will be available, the collector will get the metrics and
+send to the Decanter dispatcher.</p>
+</div>
+</div>
+</div>
+</div>
+<div id="footer">
+<div id="footer-text">
+Last updated 2018-01-28 16:28:45 +01:00
+</div>
+</div>
+</body>
+</html>
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