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Posted to commits@camel.apache.org by bu...@apache.org on 2012/12/14 10:18:17 UTC
svn commit: r842286 - in /websites/production/camel/content:
cache/main.pageCache camel-2110-release.html zookeeper.html
Author: buildbot
Date: Fri Dec 14 09:18:16 2012
New Revision: 842286
Log:
Production update by buildbot for camel
Modified:
websites/production/camel/content/cache/main.pageCache
websites/production/camel/content/camel-2110-release.html
websites/production/camel/content/zookeeper.html
Modified: websites/production/camel/content/cache/main.pageCache
==============================================================================
Binary files - no diff available.
Modified: websites/production/camel/content/camel-2110-release.html
==============================================================================
--- websites/production/camel/content/camel-2110-release.html (original)
+++ websites/production/camel/content/camel-2110-release.html Fri Dec 14 09:18:16 2012
@@ -144,7 +144,7 @@
<h2><a shape="rect" name="Camel2.11.0Release-DependencyUpgrades"></a>Dependency Upgrades</h2>
-<ul><li>Aries Blueprint 0.3 to 1.0.0</li><li>Async Http Client 1.7.5 to 1.7.8</li><li>Avro 1.6.2 to 1.7.2</li><li>AWS 1.3.10 to 1.3.14</li><li>Axiom 1.2.10 to 1.2.12</li><li>BeanIO 2.0.0 to 2.0.2</li><li>Commons Exec 1.0.1 to 1.1</li><li>ConcurrentLinkedHashMap 1.2 to 1.3.1</li><li>Ehcache 2.5.1 to 2.6.0</li><li>Groovy 1.8.6 to 2.0.5</li><li>GSon 2.1 to 2.2.2</li><li>Hazelcast 2.0.2 to 2.4</li><li>HTTP Client 4.1.3 to 4.2.2</li><li>Icu4j 4.0.1 to 4.8.1.1</li><li>Jackson 1.9.7 to 1.9.10</li><li>Jaxen 1.1.3 to 1.1.4</li><li>JClouds 1.4.0 to 1.5.1</li><li>Jettison 1.3.1 to 1.3.2</li><li>Jetty 7.5.4 to 7.6.8</li><li>JRuby 1.6.7 to 1.7.0</li><li>JT400 6.0 to 6.7</li><li>Krati 0.4.5 to 0.4.6</li><li>LevelDBJNI 1.2 to 1.3</li><li>Lucene 3.6.0 to 3.6.1</li><li>Mina 2.0.4 to 2.0.7</li><li>MongoDB Java Driver 2.7.3 to 2.9.1</li><li>MQTTClient 1.2 to 1.4</li><li>Netty 3.5.1 to 3.5.11</li><li>Ognl bundle 3.0.4_1 to 3.0.5_1</li><li>OSGi 4.2.0 to 4.3.0</li><li>Pax Logging 1.5.3 to 1.6.10<
/li><li>QPid 0.16 to 0.18</li><li>Quartz 1.8.5 to 1.8.6</li><li>Restlet 2.0.14 to 2.0.15</li><li>Saxon 9.3.0.11 to 9.4.0.1</li><li>Scala 2.9.1 to 2.9.2</li><li>Shiro 1.2.0 to 1.2.1</li><li>SLF4J 1.6.6 to 1.7.2</li><li>Solr 3.6.0 to 3.6.1</li><li>Spring Batch 2.1.8 to 2.1.9</li><li>Spring Framework 3.1.1 to 3.1.2</li><li>Spring Integration 2.1.2 to 2.1.4</li><li>Spring Security 3.1.0 to 3.1.3</li><li>SSHD 0.6.0 to 0.8.0</li><li>TestNG 6.0.1 to 6.8</li><li>Woodstox 4.1.2 to 4.1.3</li><li>XStream 1.4.2 to 1.4.3</li></ul>
+<ul><li>Aries Blueprint 0.3 to 1.0.0</li><li>Async Http Client 1.7.5 to 1.7.8</li><li>Avro 1.6.2 to 1.7.2</li><li>AWS 1.3.10 to 1.3.14</li><li>Axiom 1.2.10 to 1.2.12</li><li>BeanIO 2.0.0 to 2.0.2</li><li>Commons Exec 1.0.1 to 1.1</li><li>ConcurrentLinkedHashMap 1.2 to 1.3.1</li><li>Ehcache 2.5.1 to 2.6.0</li><li>Groovy 1.8.6 to 2.0.5</li><li>GSon 2.1 to 2.2.2</li><li>Hazelcast 2.0.2 to 2.4</li><li>HTTP Client 4.1.3 to 4.2.2</li><li>Icu4j 4.0.1 to 4.8.1.1</li><li>Jackson 1.9.7 to 1.9.10</li><li>Jaxen 1.1.3 to 1.1.4</li><li>JClouds 1.4.0 to 1.5.1</li><li>Jettison 1.3.1 to 1.3.2</li><li>Jetty 7.5.4 to 7.6.8</li><li>JRuby 1.6.7 to 1.7.1</li><li>JT400 6.0 to 6.7</li><li>Krati 0.4.5 to 0.4.6</li><li>LevelDBJNI 1.2 to 1.3</li><li>Lucene 3.6.0 to 3.6.1</li><li>Mina 2.0.4 to 2.0.7</li><li>MongoDB Java Driver 2.7.3 to 2.9.1</li><li>MQTTClient 1.2 to 1.4</li><li>Netty 3.5.1 to 3.5.11</li><li>Ognl bundle 3.0.4_1 to 3.0.5_1</li><li>OSGi 4.2.0 to 4.3.0</li><li>Pax Logging 1.5.3 to 1.6.10<
/li><li>QPid 0.16 to 0.18</li><li>Quartz 1.8.5 to 1.8.6</li><li>Restlet 2.0.14 to 2.0.15</li><li>Saxon 9.3.0.11 to 9.4.0.1</li><li>Scala 2.9.1 to 2.9.2</li><li>Shiro 1.2.0 to 1.2.1</li><li>SLF4J 1.6.6 to 1.7.2</li><li>Solr 3.6.0 to 3.6.1</li><li>Spring Batch 2.1.8 to 2.1.9</li><li>Spring Framework 3.1.1 to 3.1.2</li><li>Spring Integration 2.1.2 to 2.1.4</li><li>Spring Security 3.1.0 to 3.1.3</li><li>SSHD 0.6.0 to 0.8.0</li><li>TestNG 6.0.1 to 6.8</li><li>Woodstox 4.1.2 to 4.1.3</li><li>XStream 1.4.2 to 1.4.3</li></ul>
<h2><a shape="rect" name="Camel2.11.0Release-Importantchangestoconsiderwhenupgrading"></a>Important changes to consider when upgrading</h2>
Modified: websites/production/camel/content/zookeeper.html
==============================================================================
--- websites/production/camel/content/zookeeper.html (original)
+++ websites/production/camel/content/zookeeper.html Fri Dec 14 09:18:16 2012
@@ -76,6 +76,7 @@
<tr>
<td valign="top" width="100%">
<div class="wiki-content maincontent"><h2><a shape="rect" name="Zookeeper-ZooKeeper"></a>ZooKeeper</h2>
+
<p><b>Available as of Camel 2.9</b></p>
<p>The ZooKeeper component allows interaction with a <a shape="rect" class="external-link" href="http://hadoop.apache.org/zookeeper/">ZooKeeper</a> cluster and exposes the following features to Camel:</p>
@@ -107,7 +108,7 @@ zookeeper:<span class="code-comment">//z
<h3><a shape="rect" name="Zookeeper-Options"></a>Options</h3>
<div class="confluenceTableSmall"><div class="table-wrap">
-<table class="confluenceTable"><tbody><tr><th colspan="1" rowspan="1" class="confluenceTh"> Name </th><th colspan="1" rowspan="1" class="confluenceTh"> Default Value </th><th colspan="1" rowspan="1" class="confluenceTh"> Description </th></tr><tr><td colspan="1" rowspan="1" class="confluenceTd"> <tt>sessionId</tt> </td><td colspan="1" rowspan="1" class="confluenceTd"> <tt>null</tt> </td><td colspan="1" rowspan="1" class="confluenceTd"> The session id used to identify a connection to the cluster </td></tr><tr><td colspan="1" rowspan="1" class="confluenceTd"> <tt>password</tt> </td><td colspan="1" rowspan="1" class="confluenceTd"> <tt>null</tt> </td><td colspan="1" rowspan="1" class="confluenceTd"> The password to use when making a connection </td></tr><tr><td colspan="1" rowspan="1" class="confluenceTd"> <tt>listChildren</tt> </td><td colspan="1" rowspan="1" class="confluenceTd"> <tt>false</tt> </td><td colspan="1" rowspan="1" class="confluenceTd"> whether the children of the
node should be listed</td></tr><tr><td colspan="1" rowspan="1" class="confluenceTd"> <tt>repeat</tt> </td><td colspan="1" rowspan="1" class="confluenceTd"> <tt>false</tt> </td><td colspan="1" rowspan="1" class="confluenceTd"> should changes to the znode be 'watched' and repeatedly processed. </td></tr><tr><td colspan="1" rowspan="1" class="confluenceTd"> <tt>backoff</tt> </td><td colspan="1" rowspan="1" class="confluenceTd"> <tt>5000</tt> </td><td colspan="1" rowspan="1" class="confluenceTd"> the time interval to backoff for after an error before retrying. </td></tr><tr><td colspan="1" rowspan="1" class="confluenceTd"> <tt>timeout</tt> </td><td colspan="1" rowspan="1" class="confluenceTd"> <tt>5000</tt> </td><td colspan="1" rowspan="1" class="confluenceTd"> the time interval to wait on connection before timing out. </td></tr><tr><td colspan="1" rowspan="1" class="confluenceTd"> <tt>create</tt> </td><td colspan="1" rowspan="1" class="confluenceTd"> <tt>false</tt> </td><td c
olspan="1" rowspan="1" class="confluenceTd"> should the endpoint create the node if it does not currently exist. </td></tr><tr><td colspan="1" rowspan="1" class="confluenceTd"> <tt>createMode</tt> </td><td colspan="1" rowspan="1" class="confluenceTd"> <tt>EPHEMERAL</tt> </td><td colspan="1" rowspan="1" class="confluenceTd"> the create mode that should be used for the newly created node (see below). </td></tr><tr><td colspan="1" rowspan="1" class="confluenceTd"> <tt>sendEmptyMessageOnDelete</tt> </td><td colspan="1" rowspan="1" class="confluenceTd"> <tt>true</tt> </td><td colspan="1" rowspan="1" class="confluenceTd"> <b>Camel 2.10:</b> upon the delete of a znode, should an empty message be send to the consumer </td></tr></tbody></table>
+<table class="confluenceTable"><tbody><tr><th colspan="1" rowspan="1" class="confluenceTh"> Name </th><th colspan="1" rowspan="1" class="confluenceTh"> Default Value </th><th colspan="1" rowspan="1" class="confluenceTh"> Description </th></tr><tr><td colspan="1" rowspan="1" class="confluenceTd"> <tt>sessionId</tt> </td><td colspan="1" rowspan="1" class="confluenceTd"> <tt>null</tt> </td><td colspan="1" rowspan="1" class="confluenceTd"> The session id used to identify a connection to the cluster </td></tr><tr><td colspan="1" rowspan="1" class="confluenceTd"> <tt>password</tt> </td><td colspan="1" rowspan="1" class="confluenceTd"> <tt>null</tt> </td><td colspan="1" rowspan="1" class="confluenceTd"> The password to use when making a connection </td></tr><tr><td colspan="1" rowspan="1" class="confluenceTd"> <tt>listChildren</tt> </td><td colspan="1" rowspan="1" class="confluenceTd"> <tt>false</tt> </td><td colspan="1" rowspan="1" class="confluenceTd"> whether the children of the
node should be listed </td></tr><tr><td colspan="1" rowspan="1" class="confluenceTd"> <tt>repeat</tt> </td><td colspan="1" rowspan="1" class="confluenceTd"> <tt>false</tt> </td><td colspan="1" rowspan="1" class="confluenceTd"> should changes to the znode be 'watched' and repeatedly processed. </td></tr><tr><td colspan="1" rowspan="1" class="confluenceTd"> <tt>backoff</tt> </td><td colspan="1" rowspan="1" class="confluenceTd"> <tt>5000</tt> </td><td colspan="1" rowspan="1" class="confluenceTd"> the time interval to backoff for after an error before retrying. </td></tr><tr><td colspan="1" rowspan="1" class="confluenceTd"> <tt>timeout</tt> </td><td colspan="1" rowspan="1" class="confluenceTd"> <tt>5000</tt> </td><td colspan="1" rowspan="1" class="confluenceTd"> the time interval to wait on connection before timing out. </td></tr><tr><td colspan="1" rowspan="1" class="confluenceTd"> <tt>create</tt> </td><td colspan="1" rowspan="1" class="confluenceTd"> <tt>false</tt> </td><td c
olspan="1" rowspan="1" class="confluenceTd"> should the endpoint create the node if it does not currently exist. </td></tr><tr><td colspan="1" rowspan="1" class="confluenceTd"> <tt>createMode</tt> </td><td colspan="1" rowspan="1" class="confluenceTd"> <tt>EPHEMERAL</tt> </td><td colspan="1" rowspan="1" class="confluenceTd"> the create mode that should be used for the newly created node (see below). </td></tr><tr><td colspan="1" rowspan="1" class="confluenceTd"> <tt>sendEmptyMessageOnDelete</tt> </td><td colspan="1" rowspan="1" class="confluenceTd"> <tt>true</tt> </td><td colspan="1" rowspan="1" class="confluenceTd"> <b>Camel 2.10:</b> upon the delete of a znode, should an empty message be send to the consumer </td></tr></tbody></table>
</div>
</div>
@@ -131,12 +132,13 @@ from(<span class="code-quote">"zookeeper
</div></div>
<h4><a shape="rect" name="Zookeeper-Readingfromaznode%28additionalCamel2.10onwards%29"></a>Reading from a znode - (additional Camel 2.10 onwards)</h4>
+
<p>When data is read due to a WatchedEvent received from the ZooKeeper ensemble, the CamelZookeeperEventType header holds ZooKeeper's <a shape="rect" class="external-link" href="http://zookeeper.apache.org/doc/current/api/org/apache/zookeeper/Watcher.Event.EventType.html">EventType</a> value from that WatchedEvent. If the data is read initially (not triggered by a WatchedEvent) the CamelZookeeperEventType header will not be set.</p>
<h4><a shape="rect" name="Zookeeper-Writingtoaznode."></a>Writing to a znode.</h4>
-<p>The following snippet will write the payload of the exchange into the znode at '/somepath/somenode/' provided that it already exists </p>
+<p>The following snippet will write the payload of the exchange into the znode at '/somepath/somenode/' provided that it already exists</p>
<div class="code panel" style="border-width: 1px;"><div class="codeContent panelContent">
<pre class="code-java">
from(<span class="code-quote">"direct:write-to-znode"</span>).to(<span class="code-quote">"zookeeper:<span class="code-comment">//localhost:39913/somepath/somenode"</span>);</span>
@@ -152,13 +154,34 @@ template.sendBodyAndHeader(<span class="
</pre>
</div></div>
-<p>To also create the node if it does not exist the 'create' option should be used. </p>
+<p>To also create the node if it does not exist the 'create' option should be used.</p>
<div class="code panel" style="border-width: 1px;"><div class="codeContent panelContent">
<pre class="code-java">
from(<span class="code-quote">"direct:create-and-write-to-znode"</span>).to(<span class="code-quote">"zookeeper:<span class="code-comment">//localhost:39913/somepath/somenode?create=<span class="code-keyword">true</span>"</span>);</span>
</pre>
</div></div>
+<p>Starting <b>version 2.11</b> it is also possible to <b>delete</b> a node using the header 'CamelZookeeperOperation' by setting it to 'DELETE'.</p>
+<div class="code panel" style="border-width: 1px;"><div class="codeContent panelContent">
+<pre class="code-java">
+from(<span class="code-quote">"direct:delete-znode"</span>).setHeader(ZooKeeperMessage.ZOOKEEPER_OPERATION, constant(<span class="code-quote">"DELETE"</span>)).to(<span class="code-quote">"zookeeper:<span class="code-comment">//localhost:39913/somepath/somenode"</span>);</span>
+</pre>
+</div></div>
+
+<p>or equivalently</p>
+
+<div class="code panel" style="border-width: 1px;"><div class="codeContent panelContent">
+<pre class="code-xml">
+<span class="code-tag"><route></span>
+ <span class="code-tag"><from uri=<span class="code-quote">"direct:delete-znode"</span> /></span>
+ <span class="code-tag"><setHeader headerName=<span class="code-quote">"CamelZookeeperOperation"</span>></span>
+ <span class="code-tag"><constant></span>DELETE<span class="code-tag"></constant></span>
+ <span class="code-tag"></setHeader></span>
+ <span class="code-tag"><to uri=<span class="code-quote">"zookeeper://localhost:39913/somepath/somenode"</span> /></span>
+<span class="code-tag"></route></span>
+</pre>
+</div></div>
+
<p>ZooKeeper nodes can have different types; they can be 'Ephemeral' or 'Persistent' and 'Sequenced' or 'Unsequenced'. For further information of each type you can check <a shape="rect" class="external-link" href="http://zookeeper.apache.org/doc/trunk/zookeeperProgrammers.html#Ephemeral+Nodes">here</a>. By default endpoints will create unsequenced, ephemeral nodes, but the type can be easily manipulated via a uri config parameter or via a special message header. The values expected for the create mode are simply the names from the CreateMode enumeration</p>
<ul class="alternate" type="square"><li>PERSISTENT</li><li>PERSISTENT_SEQUENTIAL</li><li>EPHEMERAL</li><li>EPHEMERAL_SEQUENTIAL</li></ul>
@@ -186,7 +209,7 @@ template.sendBodyAndHeader(<span class="
<p>ZooKeeper allows for very simple and effective leader election out of the box; This component exploits this election capability in a <a shape="rect" href="routepolicy.html" title="RoutePolicy">RoutePolicy</a> to control when and how routes are enabled. This policy would typically be used in fail-over scenarios, to control identical instances of a route across a cluster of Camel based servers. A very common scenario is a simple 'Master-Slave' setup where there are multiple instances of a route distributed across a cluster but only one of them, that of the master, should be running at a time. If the master fails, a new master should be elected from the available slaves and the route in this new master should be started.</p>
-<p>The policy uses a common znode path across all instances of the RoutePolicy that will be involved in the election. Each policy writes its id into this node and zookeeper will order the writes in the order it received them. The policy then reads the listing of the node to see what postion of its id; this postion is used to determine if the route should be started or not. The policy is configured at startup with the number of route instances that should be started across the cluster and if its position in the list is less than this value then its route will be started. For a Master-slave scenario, the route is configured with 1 route instance and only the first entry in the listing will start its route. All policies watch for updates to the listing and if the listing changes they recalculate if their route should be started. For more info on Zookeeper's Leader election capability see <a shape="rect" class="external-link" href="http://zookeeper.apache.org/doc/trunk/recipes.h
tml#sc_leaderElection">this page</a>. </p>
+<p>The policy uses a common znode path across all instances of the RoutePolicy that will be involved in the election. Each policy writes its id into this node and zookeeper will order the writes in the order it received them. The policy then reads the listing of the node to see what postion of its id; this postion is used to determine if the route should be started or not. The policy is configured at startup with the number of route instances that should be started across the cluster and if its position in the list is less than this value then its route will be started. For a Master-slave scenario, the route is configured with 1 route instance and only the first entry in the listing will start its route. All policies watch for updates to the listing and if the listing changes they recalculate if their route should be started. For more info on Zookeeper's Leader election capability see <a shape="rect" class="external-link" href="http://zookeeper.apache.org/doc/trunk/recipes.h
tml#sc_leaderElection">this page</a>.</p>
<p>The following example uses the node '/someapplication/somepolicy' for the election and is set up to start only the top '1' entries in the node listing i.e. elect a master</p>
<div class="code panel" style="border-width: 1px;"><div class="codeContent panelContent">
@@ -194,8 +217,7 @@ template.sendBodyAndHeader(<span class="
ZooKeeperRoutePolicy policy = <span class="code-keyword">new</span> ZooKeeperRoutePolicy(<span class="code-quote">"zookeeper:localhost:39913/someapp/somepolicy"</span>, 1);
from(<span class="code-quote">"direct:policy-controlled"</span>).routePolicy(policy).to(<span class="code-quote">"mock:controlled"</span>);
</pre>
-</div></div>
-
+</div></div>
<h3><a shape="rect" name="Zookeeper-SeeAlso"></a>See Also</h3>
<ul><li><a shape="rect" href="configuring-camel.html" title="Configuring Camel">Configuring Camel</a></li><li><a shape="rect" href="component.html" title="Component">Component</a></li><li><a shape="rect" href="endpoint.html" title="Endpoint">Endpoint</a></li><li><a shape="rect" href="getting-started.html" title="Getting Started">Getting Started</a></li></ul>
</div>