[exo-jcr-commits] exo-jcr SVN: r1829 - jcr/trunk/docs/reference/en/src/main/docbook/modules.
do-not-reply at jboss.org
do-not-reply at jboss.org
Tue Feb 16 08:54:54 EST 2010
Author: sergiykarpenko
Date: 2010-02-16 08:54:54 -0500 (Tue, 16 Feb 2010)
New Revision: 1829
Added:
jcr/trunk/docs/reference/en/src/main/docbook/modules/LockManagerConfig.xml
Log:
EXOJCR-490: LockManagerConfig.xml added
Added: jcr/trunk/docs/reference/en/src/main/docbook/modules/LockManagerConfig.xml
===================================================================
--- jcr/trunk/docs/reference/en/src/main/docbook/modules/LockManagerConfig.xml (rev 0)
+++ jcr/trunk/docs/reference/en/src/main/docbook/modules/LockManagerConfig.xml 2010-02-16 13:54:54 UTC (rev 1829)
@@ -0,0 +1,448 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE article PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN"
+"http://www.oasis-open.org/docbook/xml/4.3b2/docbookx.dtd">
+<article>
+ <articleinfo>
+ <title>LockManager configuration</title>
+ </articleinfo>
+
+ <sect1>
+ <title>LockManager configuration</title>
+
+ <sect2>
+ <title>Introduction</title>
+
+ <para>What LockManager does?</para>
+
+ <para>In common words, LockManager stores lock objects, so it can give
+ Lock object or can release it, etc.</para>
+
+ <para>Also LockManager is responsible for removing Locks that live too
+ long. This parameter may be configured with "time-out" property.</para>
+
+ <para>JCR provide two base implementation of LockManager:</para>
+
+ <itemizedlist>
+ <listitem>
+ <para>org.exoplatform.services.jcr.impl.core.lock.LockManagerImpl;</para>
+ </listitem>
+
+ <listitem>
+ <para>org.exoplatform.services.jcr.impl.core.lock.jbosscache.CacheableLockManagerImpl;</para>
+ </listitem>
+ </itemizedlist>
+
+ <para>In this article we will talk mostly about
+ CacheableLockManagerImpl.</para>
+
+ <para>You can enable LockManager by adding lock-manager-configuration to
+ workspace-configuration.</para>
+
+ <para>For example:</para>
+
+ <programlisting><workspace name="ws">
+ ...
+ <lock-manager class="org.exoplatform.services.jcr.impl.core.lock.jbosscache.CacheableLockManagerImpl">
+ <properties>
+ <property name="time-out" value="15m" />
+ ...
+ </properties>
+ </lock-manager>
+ ...
+</workspace></programlisting>
+ </sect2>
+
+ <sect2>
+ <title>LockManagerImpl</title>
+
+ <para>LockManagerImpl is simple implementation of LockManager, and also
+ faster than CacheableLockManager. It stores Lock objects in HashMap and
+ may also persist Locks if LockPersister is configured. LockManagerImpl
+ do not support replication in any way.</para>
+
+ <para>See <ulink
+ url="http://wiki.exoplatform.com/xwiki/bin/view/JCR/Configuration#HLockManagerconfiguration3A">LockManagerImpl
+ configuration</ulink></para>
+ </sect2>
+
+ <sect2>
+ <title>CacheableLockManagerImpl</title>
+
+ <para>CacheableLockManagerImpl stores Lock object in JBoss-cache, so
+ Locks are replicable and affects on cluster, not only a single node.
+ Also JBoss-cache has JDBCCacheLoader, so locks will be stored to
+ database.</para>
+
+ <para>Both implementation supports Expired Locks removing. There is
+ LockRemover - separate thread, that periodically ask LockManager for
+ Locks that lives to much and must be removed. So, timeout for
+ LockRemover may be set as follows, default value is 30m.</para>
+
+ <programlisting><properties>
+ <property name="time-out" value="10m" />
+ ...
+</properties></programlisting>
+
+ <para>Replication requirements are same as for Cache</para>
+
+ <warning>
+ <para>[TODO add link to replication configuration]</para>
+ </warning>
+
+ <sect3>
+ <title>Configuration</title>
+
+ <para>Replication requirements are same as for Cache</para>
+
+ <para>Common tips:</para>
+
+ <itemizedlist>
+ <listitem>
+ <para>clusterName ("jbosscache-cluster-name") must be
+ unique;</para>
+ </listitem>
+
+ <listitem>
+ <para>cache.jdbc.table.name must be unique per datasource;</para>
+ </listitem>
+
+ <listitem>
+ <para>cache.jdbc.fqn.type must and cache.jdbc.node.type must be
+ configured according to used database;</para>
+ </listitem>
+ </itemizedlist>
+
+ <para>There is few ways how to configure CacheableLockManagerImpl, and
+ all of them configures JBoss-cache and JDBCCacheLoader.</para>
+
+ <para>See <ulink
+ url="http://community.jboss.org/wiki/JBossCacheJDBCCacheLoader">http://community.jboss.org/wiki/JBossCacheJDBCCacheLoader</ulink></para>
+ </sect3>
+
+ <sect3>
+ <title>Simple JbossCache Configuraion</title>
+
+ <para>First one is - put JbossCache configuraion file path to
+ CacheableLockManagerImpl</para>
+
+ <para><note>
+ <para>This configuration is not so good, as you can think. Because
+ repository may contain many workspaces, and each workspace must
+ contain LockManager configuration, and LockManager config may
+ contain JbossCache config file. So total configuration is growing
+ up. But it is usefull if we want a single LockManager with special
+ configuration.</para>
+ </note></para>
+
+ <para>Config is:</para>
+
+ <programlisting><lock-manager class="org.exoplatform.services.jcr.impl.core.lock.jbosscache.CacheableLockManagerImpl">
+ <properties>
+ <property name="time-out" value="15m" />
+ <property name="jbosscache-configuration" value="conf/standalone/cluster/test-jbosscache-lock-config.xml" />
+ </properties>
+</lock-manager></programlisting>
+
+ <para>test-jbosscache-lock-config.xml<programlisting><?xml version="1.0" encoding="UTF-8"?>
+<jbosscache xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="urn:jboss:jbosscache-core:config:3.2">
+
+ <locking useLockStriping="false" concurrencyLevel="50000" lockParentForChildInsertRemove="false" lockAcquisitionTimeout="20000" />
+
+ <clustering mode="replication" clusterName="JBoss-Cache-Lock-Cluster_Name">
+ <stateRetrieval timeout="20000" fetchInMemoryState="false" nonBlocking="true" />
+ <jgroupsConfig>
+
+ <TCP bind_addr="127.0.0.1" start_port="9800" loopback="true" recv_buf_size="20000000" send_buf_size="640000" discard_incompatible_packets="true"
+ max_bundle_size="64000" max_bundle_timeout="30" use_incoming_packet_handler="true" enable_bundling="false" use_send_queues="false" sock_conn_timeout="300"
+ skip_suspected_members="true" use_concurrent_stack="true" thread_pool.enabled="true" thread_pool.min_threads="1" thread_pool.max_threads="25"
+ thread_pool.keep_alive_time="5000" thread_pool.queue_enabled="false" thread_pool.queue_max_size="100" thread_pool.rejection_policy="run"
+ oob_thread_pool.enabled="true" oob_thread_pool.min_threads="1" oob_thread_pool.max_threads="8" oob_thread_pool.keep_alive_time="5000"
+ oob_thread_pool.queue_enabled="false" oob_thread_pool.queue_max_size="100" oob_thread_pool.rejection_policy="run" />
+ <MPING timeout="2000" num_initial_members="2" mcast_port="34540" bind_addr="127.0.0.1" mcast_addr="224.0.0.1" />
+
+
+ <MERGE2 max_interval="30000" min_interval="10000" />
+ <FD_SOCK />
+ <FD max_tries="5" shun="true" timeout="10000" />
+ <VERIFY_SUSPECT timeout="1500" />
+ <pbcast.NAKACK discard_delivered_msgs="true" gc_lag="0" retransmit_timeout="300,600,1200,2400,4800" use_mcast_xmit="false" />
+ <UNICAST timeout="300,600,1200,2400,3600" />
+ <pbcast.STABLE desired_avg_gossip="50000" max_bytes="400000" stability_delay="1000" />
+ <pbcast.GMS join_timeout="5000" print_local_addr="true" shun="false" view_ack_collection_timeout="5000" view_bundling="true" />
+ <FRAG2 frag_size="60000" />
+ <pbcast.STREAMING_STATE_TRANSFER />
+ <pbcast.FLUSH timeout="0" />
+
+ </jgroupsConfig
+
+ <sync />
+ </clustering>
+
+ <loaders passivation="false" shared="true">
+ <preload>
+ <node fqn="/" />
+ </preload>
+ <loader class="org.jboss.cache.loader.JDBCCacheLoader" async="false" fetchPersistentState="false" ignoreModifications="false" purgeOnStartup="false">
+ <properties>
+ cache.jdbc.table.name=jcrlocks_ws
+ cache.jdbc.table.create=true
+ cache.jdbc.table.drop=false
+ cache.jdbc.table.primarykey=jcrlocks_ws_pk
+ cache.jdbc.fqn.column=fqn
+ cache.jdbc.fqn.type=VARCHAR(512)
+ cache.jdbc.node.column=node
+ cache.jdbc.node.type=<BLOB>
+ cache.jdbc.parent.column=parent
+ cache.jdbc.datasource=jdbcjcr
+ </properties>
+ </loader>
+
+ </loaders>
+
+</jbosscache></programlisting></para>
+
+ <para>Configuration requirements:</para>
+
+ <itemizedlist>
+ <listitem>
+ <para><clustering mode="replication"
+ clusterName="JBoss-Cache-Lock-Cluster_Name"> - cluster name
+ must be unique;</para>
+ </listitem>
+
+ <listitem>
+ <para>"cache.jdbc.table.name" must be unique per
+ datasource;</para>
+ </listitem>
+
+ <listitem>
+ <para>"cache.jdbc.node.type" and "cache.jdbc.fqn.type" must be
+ configured according to using database. <ulink
+ url="#datatypes">DataTypes</ulink> or <link
+ linkend="datatypes">enother link to DataTypes</link>.</para>
+ </listitem>
+ </itemizedlist>
+ </sect3>
+
+ <sect3>
+ <title>Template JBossCache Configuration</title>
+
+ <para>Second one is - use template JBoss-cache configuration for all
+ LockManagers</para>
+
+ <para><citetitle>Lock template configuration</citetitle></para>
+
+ <para>test-jbosscache-lock.xml</para>
+
+ <programlisting><?xml version="1.0" encoding="UTF-8"?>
+<jbosscache xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="urn:jboss:jbosscache-core:config:3.1">
+
+ <locking useLockStriping="false" concurrencyLevel="50000" lockParentForChildInsertRemove="false"
+ lockAcquisitionTimeout="20000" />
+
+ <clustering mode="replication" clusterName="${jbosscache-cluster-name}">
+ <stateRetrieval timeout="20000" fetchInMemoryState="false" />
+ <jgroupsConfig multiplexerStack="jcr.stack" />
+ <sync />
+ </clustering>
+
+ <loaders passivation="false" shared="true">
+ <!-- All the data of the JCR locks needs to be loaded at startup -->
+ <preload>
+ <node fqn="/" />
+ </preload>
+ <!--
+ For another cache-loader class you should use another template with
+ cache-loader specific parameters
+ ->
+ <loader class="org.jboss.cache.loader.JDBCCacheLoader" async=q"false" fetchPersistentState="false"
+ ignoreModifications="false" purgeOnStartup="false">
+ <properties>
+ cache.jdbc.table.name=${jbosscache-cl-cache.jdbc.table.name}
+ cache.jdbc.table.create=${jbosscache-cl-cache.jdbc.table.create}
+ cache.jdbc.table.drop=${jbosscache-cl-cache.jdbc.table.drop}
+ cache.jdbc.table.primarykey=${jbosscache-cl-cache.jdbc.table.primarykey}
+ cache.jdbc.fqn.column=${jbosscache-cl-cache.jdbc.fqn.column}
+ cache.jdbc.fqn.type=${jbosscache-cl-cache.jdbc.fqn.type}
+ cache.jdbc.node.column=${jbosscache-cl-cache.jdbc.node.column}
+ cache.jdbc.node.type=${jbosscache-cl-cache.jdbc.node.type}
+ cache.jdbc.parent.column=${jbosscache-cl-cache.jdbc.parent.column}
+ cache.jdbc.datasource=${jbosscache-cl-cache.jdbc.datasource}
+ </properties>
+ </loader>
+ </loaders>
+</jbosscache></programlisting>
+
+ <para>As you see, all configurable paramaters filled by templates and
+ will be replaced by LockManagers conf parameters:</para>
+
+ <programlisting><lock-manager class="org.exoplatform.services.jcr.impl.core.lock.jbosscache.CacheableLockManagerImpl">
+ <properties>
+ <property name="time-out" value="15m" />
+ <property name="jbosscache-configuration" value="test-jbosscache-lock.xml" />
+ <property name="jgroups-configuration" value="udp-mux.xml" />
+ <property name="jgroups-multiplexer-stack" value="true" />
+ <property name="jbosscache-cluster-name" value="JCR-cluster-locks-ws" />
+ <property name="jbosscache-cl-cache.jdbc.table.name" value="jcrlocks_ws" />
+ <property name="jbosscache-cl-cache.jdbc.table.create" value="true" />
+ <property name="jbosscache-cl-cache.jdbc.table.drop" value="false" />
+ <property name="jbosscache-cl-cache.jdbc.table.primarykey" value="jcrlocks_ws_pk" />
+ <property name="jbosscache-cl-cache.jdbc.fqn.column" value="fqn" />
+ <property name="jbosscache-cl-cache.jdbc.fqn.type" value="AUTO"/>
+ <property name="jbosscache-cl-cache.jdbc.node.column" value="node" />
+ <property name="jbosscache-cl-cache.jdbc.node.type" value="AUTO"/>
+ <property name="jbosscache-cl-cache.jdbc.parent.column" value="parent" />
+ <property name="jbosscache-cl-cache.jdbc.datasource" value="jdbcjcr" />
+ </properties>
+</lock-manager></programlisting>
+
+ <para>Configuration requirements:<itemizedlist>
+ <listitem>
+ <para>"jbosscache-cl-cache.jdbc.fqn.column" and
+ "jbosscache-cl-cache.jdbc.node.type" is nothing else as
+ cache.jdbc.fqn.type and cache.jdbc.node.type in JBoss-Cache
+ configuration. You can set those data types according to
+ database type (See [TODO add link to blob types inf diff DB]) or
+ set it as AUTO (or do not set at all) and data type will by
+ detected automaticaly.</para>
+ </listitem>
+
+ <listitem>
+ <para>as you see, jgroups-configuration moved to separate config
+ file - udp-mux.xml; In our case udp-mux.xml is common JGroup
+ config for all components (QueryHandler, cache, LockManager).
+ But we, still, can create own config.</para>
+ </listitem>
+ </itemizedlist></para>
+
+ <para>our-udp-mux.xml<programlisting><protocol_stacks>
+ <stack name="jcr.stack">
+ <config>
+ <UDP mcast_addr="228.10.10.10" mcast_port="45588" tos="8" ucast_recv_buf_size="20000000"
+ ucast_send_buf_size="640000" mcast_recv_buf_size="25000000" mcast_send_buf_size="640000" loopback="false"
+ discard_incompatible_packets="true" max_bundle_size="64000" max_bundle_timeout="30"
+ use_incoming_packet_handler="true" ip_ttl="2" enable_bundling="true" enable_diagnostics="true"
+ thread_naming_pattern="cl" use_concurrent_stack="true" thread_pool.enabled="true" thread_pool.min_threads="2"
+ thread_pool.max_threads="8" thread_pool.keep_alive_time="5000" thread_pool.queue_enabled="true"
+ thread_pool.queue_max_size="1000" thread_pool.rejection_policy="discard" oob_thread_pool.enabled="true"
+ oob_thread_pool.min_threads="1" oob_thread_pool.max_threads="8" oob_thread_pool.keep_alive_time="5000"
+ oob_thread_pool.queue_enabled="false" oob_thread_pool.queue_max_size="100" oob_thread_pool.rejection_policy="Run" />
+
+ <PING timeout="2000" num_initial_members="3" />
+ <MERGE2 max_interval="30000" min_interval="10000" />
+ <FD_SOCK />
+ <FD timeout="10000" max_tries="5" shun="true" />
+ <VERIFY_SUSPECT timeout="1500" />
+ <BARRIER />
+ <pbcast.NAKACK use_stats_for_retransmission="false" exponential_backoff="150" use_mcast_xmit="true"
+ gc_lag="0" retransmit_timeout="50,300,600,1200" discard_delivered_msgs="true" />
+ <UNICAST timeout="300,600,1200" />
+ <pbcast.STABLE stability_delay="1000" desired_avg_gossip="50000" max_bytes="1000000" />
+ <VIEW_SYNC avg_send_interval="60000" />
+ <pbcast.GMS print_local_addr="true" join_timeout="3000" shun="false" view_bundling="true" />
+ <FC max_credits="500000" min_threshold="0.20" />
+ <FRAG2 frag_size="60000" />
+ <!--pbcast.STREAMING_STATE_TRANSFER /-->
+ <pbcast.STATE_TRANSFER />
+ <!-- pbcast.FLUSH /-->
+ </config>
+ </stack>
+</protocol_stacks> </programlisting></para>
+ </sect3>
+
+ <sect3>
+ <title id="datatypes">Data Types in Different Databases</title>
+
+ <table>
+ <title>Fqn type and node type in different databases</title>
+
+ <tgroup cols="3">
+ <thead>
+ <row>
+ <entry>DataBase name</entry>
+
+ <entry>Node data type</entry>
+
+ <entry>FQN data type</entry>
+ </row>
+ </thead>
+
+ <tbody>
+ <row>
+ <entry>default</entry>
+
+ <entry>BLOB</entry>
+
+ <entry>VARCHAR(512)</entry>
+ </row>
+
+ <row>
+ <entry>HSSQL</entry>
+
+ <entry>OBJECT</entry>
+
+ <entry>VARCHAR(512)</entry>
+ </row>
+
+ <row>
+ <entry>MySQL</entry>
+
+ <entry>LONGBLOB</entry>
+
+ <entry>VARCHAR(512)</entry>
+ </row>
+
+ <row>
+ <entry>ORACLE</entry>
+
+ <entry>BLOB</entry>
+
+ <entry>VARCHAR2(512)</entry>
+ </row>
+
+ <row>
+ <entry>PostgreSQL</entry>
+
+ <entry>bytea</entry>
+
+ <entry>VARCHAR(512)</entry>
+ </row>
+
+ <row>
+ <entry>MSSQL</entry>
+
+ <entry>VARBINARY(MAX)</entry>
+
+ <entry>VARCHAR(512)</entry>
+ </row>
+
+ <row>
+ <entry>DB2</entry>
+
+ <entry>BLOB</entry>
+
+ <entry>VARCHAR(512)</entry>
+ </row>
+
+ <row>
+ <entry>Sybase</entry>
+
+ <entry>IMAGE</entry>
+
+ <entry>VARCHAR(512)</entry>
+ </row>
+
+ <row>
+ <entry>Ingres</entry>
+
+ <entry>long byte</entry>
+
+ <entry>VARCHAR(512)</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ </sect3>
+ </sect2>
+ </sect1>
+</article>
More information about the exo-jcr-commits
mailing list