[jboss-user] [JBossCache] - Re: Can TcpDelegatingCacheLoader only delegate remove node?

Rikr2 do-not-reply at jboss.com
Mon Aug 13 11:01:19 EDT 2007


Hey Manik I subclass TcpDelegatingCacheLoader in this way:



package org.jboss.cache.loader.tcp;
  | 
  | import java.util.Iterator;
  | import java.util.List;
  | import java.util.Map;
  | import java.util.Set;
  | 
  | import org.jboss.cache.Fqn;
  | import org.jboss.cache.Modification;
  | import org.jboss.cache.loader.DelegatingCacheLoader;
  | 
  | public class MyTcpDelegatingCacheLoader extends TcpDelegatingCacheLoader {
  | 
  | 	@Override
  | 	protected void delegatePut(Fqn name, Map attributes) throws Exception {
  | 		//nothing to do
  | 	}
  | 
  | 	@Override
  | 	protected Object delegatePut(Fqn name, Object key, Object value) throws Exception {
  | 		//nothing to do
  | 		return null;
  | 	}
  | 
  | 	
  | 	@Override
  | 	protected Map delegateGet(Fqn arg0) throws Exception {
  | 		return null;
  | 	}
  | 
  | 	@Override
  | 	protected Set delegateGetChildrenNames(Fqn arg0) throws Exception {
  | 		return null;
  | 	}
  | 
  | 	@Override
  | 	protected void delegatePut(List modifications) throws Exception {
  | 		synchronized (out)
  | 	      {
  | 
  | 	         out.reset();
  | 	         out.writeInt(DelegatingCacheLoader.putList);
  | 	         int length = modifications != null ? modifications.size() : 0;
  | 	         out.writeInt(length);
  | 	         if (length > 0)
  | 	         {
  | 	            for (Iterator it = modifications.iterator(); it.hasNext();)
  | 	            {
  | 	               Modification m = (Modification) it.next();
  |                        
  | 	               if  (m.getType() == Modification.REMOVE_NODE) { //added by me
  | 	            	   m.writeExternal(out);
  | 	               }	               
  | 	            }
  | 	         }
  | 	         out.flush();
  | 	         Object retval = in.readObject();
  | 	         if (retval instanceof Exception)
  | 	            throw(Exception) retval;
  | 	      }
  | 		
  | 	}
  | 
  | 	
  | }

and I configure my Caches in this manner:
TcpCacheServer


  | <?xml version="1.0" encoding="UTF-8"?>
  | 
  | <!-- ===================================================================== -->
  | <!--                                                                       -->
  | <!--  Sample PojoCache Service Configuration                               -->
  | <!--                                                                       -->
  | <!-- ===================================================================== -->
  | 
  | <server>
  | 
  |    <!-- Used inside JBoss AS -->
  |    <classpath codebase="./lib" archives="jboss-cache-jdk50.jar, jgroups.jar"/>
  | 
  |    <!-- ==================================================================== -->
  |    <!-- Defines configuration                                                -->
  |    <!-- ==================================================================== -->
  | 
  |    <mbean code="org.jboss.cache.aop.PojoCache"
  |           name="jboss.cache:service=BackEndCache">
  | 
  |       <!-- Used inside JBoss AS -->
  |       <depends>jboss:service=Naming</depends>
  |       <depends>jboss:service=TransactionManager</depends>
  | 
  |     <!--
  |           Configure the TransactionManager
  |       
  |       <attribute name="TransactionManagerLookupClass">org.jboss.cache.DummyTransactionManagerLookup</attribute>
  |       -->
  |       <attribute name="TransactionManagerLookupClass">org.jboss.cache.JBossTransactionManagerLookup</attribute>
  |       <!--
  |           Node locking scheme:
  |               OPTIMISTIC
  |               PESSIMISTIC (default)
  |       -->
  |       <attribute name="NodeLockingScheme">OPTIMISTIC</attribute>
  | 
  |       <!--
  |           Note that this attribute is IGNORED if your NodeLockingScheme above is OPTIMISTIC.
  | 
  |           Isolation level : SERIALIZABLE
  |                             REPEATABLE_READ (default)
  |                             READ_COMMITTED
  |                             READ_UNCOMMITTED
  |                             NONE
  |       -->
  |       <attribute name="IsolationLevel">REPEATABLE_READ</attribute>
  | 
  |       <!--
  |            Valid modes are LOCAL
  |                            REPL_ASYNC
  |                            REPL_SYNC
  |                            INVALIDATION_ASYNC
  |                            INVALIDATION_SYNC
  |       -->
  |       <attribute name="CacheMode">LOCAL</attribute>
  |       <!--
  |       <attribute name="UseInterceptorMbeans">true</attribute>	
  | 	-->
  |       <!-- Name of cluster. Needs to be the same for all clusters, in order
  |            to find each other
  |       -->
  |       <attribute name="ClusterName">BackEndCache-Cluster</attribute>
  | 
  |       <!-- JGroups protocol stack properties. Can also be a URL,
  |            e.g. file:/home/bela/default.xml
  |          <attribute name="ClusterProperties"></attribute>
  |       -->
  |       <!-- This ORIGINAL CONFIF OF JGROUPS --> 
  |       <attribute name="ClusterConfig">
  |          <config>
  |             <!-- UDP: if you have a multihomed machine,
  |   set the bind_addr attribute to the appropriate NIC IP address -->
  |             <!-- UDP: On Windows machines, because of the media sense feature
  |       being broken with multicast (even after disabling media sense)
  |       set the loopback attribute to true -->
  |             <UDP mcast_addr="228.1.2.5" mcast_port="45577"
  |                  ip_ttl="64" ip_mcast="true"
  |                  mcast_send_buf_size="150000" mcast_recv_buf_size="80000"
  |                  ucast_send_buf_size="150000" ucast_recv_buf_size="80000"
  |                  loopback="false"/>
  |             <PING timeout="2000" num_initial_members="3"
  |                   up_thread="false" down_thread="false"/>
  |             <MERGE2 min_interval="10000" max_interval="20000"/>
  |             <!-- <FD shun="true" up_thread="true" down_thread="true"/> -->
  | 
  |               <FD_SOCK/>
  |             <VERIFY_SUSPECT timeout="1500"
  |                             up_thread="false" down_thread="false"/>
  |             <pbcast.NAKACK gc_lag="50" retransmit_timeout="600,1200,2400,4800"
  |                            up_thread="false" down_thread="false"/>
  |             <pbcast.STABLE desired_avg_gossip="20000"
  |                            up_thread="false" down_thread="false"/>
  |             <UNICAST timeout="600,1200,2400" window_size="100" min_threshold="10"
  |                      down_thread="false"/>
  |             <FRAG frag_size="8192"
  |                   down_thread="false" up_thread="false"/>
  |             <pbcast.GMS join_timeout="5000" join_retry_timeout="2000"
  |                         shun="true" print_local_addr="true"/>
  |             <pbcast.STATE_TRANSFER up_thread="false" down_thread="false"/>
  |          </config>
  |       </attribute>
  |  
  | 
  |       <!--
  |           The max amount of time (in milliseconds) we wait until the
  |           initial state (ie. the contents of the cache) are retrieved from
  |           existing members in a clustered environment
  |       -->
  |       <attribute name="InitialStateRetrievalTimeout">20000</attribute>
  | 
  |       <!--
  |           Number of milliseconds to wait until all responses for a
  |           synchronous call have been received.
  |       -->
  |       <attribute name="SyncReplTimeout">15000</attribute>
  | 
  |       <!-- Max number of milliseconds to wait for a lock acquisition -->
  |       <attribute name="LockAcquisitionTimeout">10000</attribute>
  | 
  |       <!--
  |       <attribute name="EvictionPolicyClass"></attribute>
  |       -->
  | 
  |       <!-- Name of the eviction policy class. We have commented it off to disable eviction.
  |       -->
  |       <attribute name="EvictionPolicyClass">org.jboss.cache.aop.eviction.AopLRUPolicy</attribute>
  | 
  |       <!-- Specific eviction policy configurations. This is LRU -->
  |       <attribute name="EvictionPolicyConfig">
  |          <config>
  |             <attribute name="wakeUpIntervalSeconds">5</attribute>
  |             <!-- Cache wide default -->
  |             <region name="/_default_">
  |                <attribute name="maxNodes">1000</attribute>
  |                <attribute name="timeToLiveSeconds">600</attribute>
  |                <attribute name="maxAgeSeconds">1200</attribute>>
  |             </region>
  |             <!-- 
  | 
  |             <region name="/aop">
  |                 <attribute name="maxNodes">5</attribute>
  |                 <attribute name="timeToLiveSeconds">4</attribute>
  |             </region>
  |             <region name="/pojo">
  |                 <attribute name="maxNodes">100</attribute>
  |                 <attribute name="timeToLiveSeconds">4</attribute>
  |             </region>
  |             <region name="/testMaxNode">
  |                 <attribute name="maxNodes">4</attribute>
  |                 <attribute name="timeToLiveSeconds">100</attribute>
  |             </region>  -->
  |          </config>
  |       </attribute>
  |    </mbean>
  | 
  |    <mbean code="org.jboss.cache.loader.tcp.TcpCacheServer" name="jboss.cache:service=TcpCacheServer">
  |   	 <depends optional-attribute-name="Cache"
  |                proxy-type="attribute">jboss.cache:service=BackEndCache</depends>
  |       <attribute name="BindAddress">${jboss.bind.address:localhost}</attribute>
  |       <attribute name="Port">7500</attribute>
  |       <attribute name="MBeanServerName"></attribute>
  |       <!--<attribute name="CacheName">jboss.cache:service=TreeCache</attribute>-->
  |    </mbean>
  | </server>



TcpDelegatingCacheLoader


<?xml version="1.0" encoding="UTF-8"?>
  | 
  | <!-- ===================================================================== -->
  | <!--                                                                       -->
  | <!--  Sample PojoCache Service Configuration                               -->
  | <!--                                                                       -->
  | <!-- ===================================================================== -->
  | 
  | <server>
  | 
  |    <!-- Used inside JBoss AS -->
  |    <classpath codebase="./lib" archives="jboss-cache-jdk50.jar, jgroups.jar"/>
  | 
  |    <!-- ==================================================================== -->
  |    <!-- Defines configuration                                                -->
  |    <!-- ==================================================================== -->
  | 
  |    <mbean code="org.jboss.cache.aop.PojoCache"
  |           name="jboss.cache:service=DelegatingCacheLoader">
  | 
  |       <!-- Used inside JBoss AS -->
  |       <depends>jboss:service=Naming</depends>
  |       <depends>jboss:service=TransactionManager</depends>
  | 
  |       <!--
  |           Configure the TransactionManager
  |       
  |       <attribute name="TransactionManagerLookupClass">org.jboss.cache.DummyTransactionManagerLookup</attribute>
  |       -->
  |       <attribute name="TransactionManagerLookupClass">org.jboss.cache.JBossTransactionManagerLookup</attribute>
  | 	
  |       <!--
  |           Node locking scheme:
  |               OPTIMISTIC
  |               PESSIMISTIC (default)
  |       -->
  |       <attribute name="NodeLockingScheme">OPTIMISTIC</attribute>
  | 
  |       <!--
  |           Note that this attribute is IGNORED if your NodeLockingScheme above is OPTIMISTIC.
  | 
  |           Isolation level : SERIALIZABLE
  |                             REPEATABLE_READ (default)
  |                             READ_COMMITTED
  |                             READ_UNCOMMITTED
  |                             NONE
  |       -->
  |       <attribute name="IsolationLevel">REPEATABLE_READ</attribute>
  | 
  |       <!--
  |            Valid modes are LOCAL
  |                            REPL_ASYNC
  |                            REPL_SYNC
  |                            INVALIDATION_ASYNC
  |                            INVALIDATION_SYNC
  |       -->
  |       <attribute name="CacheMode">LOCAL</attribute>
  | 
  |       <!-- Name of cluster. Needs to be the same for all clusters, in order
  |            to find each other
  |       -->
  |       <attribute name="ClusterName">DelegatingCacheLoader-Cluster</attribute>
  | 
  |       <!-- JGroups protocol stack properties. Can also be a URL,
  |            e.g. file:/home/bela/default.xml
  |          <attribute name="ClusterProperties"></attribute>
  |       -->
  |       <!-- This ORIGINAL CONFIF OF JGROUPS --> 
  |       <attribute name="ClusterConfig">
  |          <config>
  |             <!-- UDP: if you have a multihomed machine,
  |   set the bind_addr attribute to the appropriate NIC IP address -->
  |             <!-- UDP: On Windows machines, because of the media sense feature
  |       being broken with multicast (even after disabling media sense)
  |       set the loopback attribute to true -->
  |             <UDP mcast_addr="228.1.2.3" mcast_port="48866"
  |                  ip_ttl="64" ip_mcast="true"
  |                  mcast_send_buf_size="150000" mcast_recv_buf_size="80000"
  |                  ucast_send_buf_size="150000" ucast_recv_buf_size="80000"
  |                  loopback="false"/>
  |             <PING timeout="2000" num_initial_members="3"
  |                   up_thread="false" down_thread="false"/>
  |             <MERGE2 min_interval="10000" max_interval="20000"/>
  |             <!-- <FD shun="true" up_thread="true" down_thread="true"/> -->
  | 
  |               <FD_SOCK/>
  |             <VERIFY_SUSPECT timeout="1500"
  |                             up_thread="false" down_thread="false"/>
  |             <pbcast.NAKACK gc_lag="50" retransmit_timeout="600,1200,2400,4800"
  |                            up_thread="false" down_thread="false"/>
  |             <pbcast.STABLE desired_avg_gossip="20000"
  |                            up_thread="false" down_thread="false"/>
  |             <UNICAST timeout="600,1200,2400" window_size="100" min_threshold="10"
  |                      down_thread="false"/>
  |             <FRAG frag_size="8192"
  |                   down_thread="false" up_thread="false"/>
  |             <pbcast.GMS join_timeout="5000" join_retry_timeout="2000"
  |                         shun="true" print_local_addr="true"/>
  |             <pbcast.STATE_TRANSFER up_thread="false" down_thread="false"/>
  |          </config>
  |       </attribute>
  |  
  |       <!--
  |           The max amount of time (in milliseconds) we wait until the
  |           initial state (ie. the contents of the cache) are retrieved from
  |           existing members in a clustered environment
  |       -->
  |       <attribute name="InitialStateRetrievalTimeout">20000</attribute>
  | 
  |       <!--
  |           Number of milliseconds to wait until all responses for a
  |           synchronous call have been received.
  |       -->
  |       <attribute name="SyncReplTimeout">15000</attribute>
  | 
  |       <!-- Max number of milliseconds to wait for a lock acquisition -->
  |       <attribute name="LockAcquisitionTimeout">10000</attribute>
  | 
  |       <!--
  |       <attribute name="EvictionPolicyClass"></attribute>
  |       -->
  | 
  |       <!-- Name of the eviction policy class. We have commented it off to disable eviction.
  |       -->
  |       <attribute name="EvictionPolicyClass">org.jboss.cache.aop.eviction.AopLRUPolicy</attribute>
  | 
  |       <!-- Specific eviction policy configurations. This is LRU -->
  |       <attribute name="EvictionPolicyConfig">
  |          <config>
  |             <attribute name="wakeUpIntervalSeconds">5</attribute>
  |             <!-- Cache wide default -->
  |             <region name="/_default_">
  |                <attribute name="maxNodes">1000</attribute>
  |                <attribute name="timeToLiveSeconds">600</attribute>
  |                <attribute name="maxAgeSeconds">1200</attribute>>
  |             </region>
  |             <!-- 
  |             <region name="/aop">
  |                 <attribute name="maxNodes">5</attribute>
  |                 <attribute name="timeToLiveSeconds">4</attribute>
  |             </region>
  |             <region name="/pojo">
  |                 <attribute name="maxNodes">100</attribute>
  |                 <attribute name="timeToLiveSeconds">4</attribute>
  |             </region>
  |             <region name="/testMaxNode">
  |                 <attribute name="maxNodes">4</attribute>
  |                 <attribute name="timeToLiveSeconds">100</attribute>
  |             </region>  -->
  |          </config>
  |       </attribute>
  |      <attribute name="CacheLoaderConfiguration">
  |      <config>
  |         <cacheloader>
  |           <class>org.jboss.cache.loader.tcp.MyTcpDelegatingCacheLoader</class>
  |           <!--<class>com.procyonsoluciones.mobistore.core.commom.cache.TcpDelegatingCache</class>    -->
  | 		<properties>
  |                    host=localhost
  |                    port=7500
  |                </properties>
  | 	       <ignoreModifications>true</ignoreModifications>
  |        </cacheloader>
  |    </config>
  |  </attribute>
  |    </mbean>
  | 
  | </server>


Later I try to store an object in my DelegatingCacheLoader through JMX Console  (key= name, value = myname)  and when i  invoke the put Operation in DelegatingCacheLoader service this never end, it seems to be waiting for something. No error message is thrown. did I some wrong or i need to configure something else?

Thanks in advance 

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