Examples of org.apache.catalina.tribes.tipis.ReplicatedMap

Package org.apache.catalina.tribes.tipis

Examples of org.apache.catalina.tribes.tipis.ReplicatedMap

org.apache.catalina.tribes.tipis.ReplicatedMap
All-to-all replication for a hash map implementation. Each node in the cluster will carry an identical copy of the map.

This map implementation doesn't have a background thread running to replicate changes. If you do have changes without invoking put/remove then you need to invoke one of the following methods:
- replicate(Object,boolean) - replicates only the object that belongs to the key
- replicate(boolean) - Scans the entire map for changes and replicates data
the boolean value in the replicate method used to decide whether to only replicate objects that implement the ReplicatedMapEntry interface or to replicate all objects. If an object doesn't implement the ReplicatedMapEntry interface each time the object gets replicated the entire object gets serialized, hence a call to replicate(true) will replicate all objects in this map that are using this node as primary.

REMEMBER TO CALL breakdown() or finalize() when you are done with the map to avoid memory leaks.

TODO implement periodic sync/transfer thread
TODO memberDisappeared, should do nothing except change map membership by default it relocates the primary objects @author Filip Hanik @version 1.0

        super.addLifecycleListener(this);            
        try {
            CatalinaCluster catclust = (CatalinaCluster)this.getCluster();
            if (this.context == null) this.context = new ReplApplContext(this.getBasePath(), this);
            if ( catclust != null ) {
                ReplicatedMap map = new ReplicatedMap(this,catclust.getChannel(),DEFAULT_REPL_TIMEOUT,
                                                      getName(),getClassLoaders());
                map.setChannelSendOptions(mapSendOptions);
                ((ReplApplContext)this.context).setAttributeMap(map);
                if (getAltDDName() != null) context.setAttribute(Globals.ALT_DD_ATTR, getAltDDName());
            }
            super.start();
        }  catch ( Exception x ) {

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        if ( this.started ) return;
        try {
            CatalinaCluster catclust = (CatalinaCluster)this.getCluster();
            if (this.context == null) this.context = new ReplApplContext(this.getBasePath(), this);
            if ( catclust != null ) {
                ReplicatedMap map = new ReplicatedMap(this,catclust.getChannel(),DEFAULT_REPL_TIMEOUT,
                                                      getName(),getClassLoaders());
                map.setChannelSendOptions(mapSendOptions);
                ((ReplApplContext)this.context).setAttributeMap(map);
                if (getAltDDName() != null) context.setAttribute(Globals.ALT_DD_ATTR, getAltDDName());
            }
            super.start();
        }  catch ( Exception x ) {

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        }
    }
    
    public synchronized void stop() throws LifecycleException
    {
        ReplicatedMap map = (ReplicatedMap)((ReplApplContext)this.context).getAttributeMap();
        if ( map!=null ) {
            map.breakdown();
        }
        if ( !this.started ) return;
        try {
        } catch ( Exception x ){
            log.error("Unable to stop ReplicatedContext",x);

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        try {
            CatalinaCluster catclust = (CatalinaCluster)this.getCluster();
            if (this.context == null) this.context = new ReplApplContext(this);
            if ( catclust != null ) {
                ReplicatedMap map = new ReplicatedMap(this,catclust.getChannel(),DEFAULT_REPL_TIMEOUT,
                                                      getName(),getClassLoaders());
                map.setChannelSendOptions(mapSendOptions);
                ((ReplApplContext)this.context).setAttributeMap(map);
                if (getAltDDName() != null) context.setAttribute(Globals.ALT_DD_ATTR, getAltDDName());
            }
            super.startInternal();
        }  catch ( Exception x ) {

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        super.addLifecycleListener(this);            
        try {
            CatalinaCluster catclust = (CatalinaCluster)this.getCluster();
            if (this.context == null) this.context = new ReplApplContext(this.getBasePath(), this);
            if ( catclust != null ) {
                ReplicatedMap map = new ReplicatedMap(this,catclust.getChannel(),DEFAULT_REPL_TIMEOUT,
                                                      getName(),getClassLoaders());
                map.setChannelSendOptions(mapSendOptions);
                ((ReplApplContext)this.context).setAttributeMap(map);
                if (getAltDDName() != null) context.setAttribute(Globals.ALT_DD_ATTR, getAltDDName());
            }
            super.start();
        }  catch ( Exception x ) {

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        }
    }
    
    public synchronized void stop() throws LifecycleException
    {
        ReplicatedMap map = (ReplicatedMap)((ReplApplContext)this.context).getAttributeMap();
        if ( map!=null ) {
            map.breakdown();
        }
        if ( !this.started ) return;
        try {
            super.lifecycle.removeLifecycleListener(this);
        } catch ( Exception x ){

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        super.addLifecycleListener(this);            
        try {
            CatalinaCluster catclust = (CatalinaCluster)this.getCluster();
            if (this.context == null) this.context = new ReplApplContext(this.getBasePath(), this);
            if ( catclust != null ) {
                ReplicatedMap map = new ReplicatedMap(this,catclust.getChannel(),DEFAULT_REPL_TIMEOUT,
                                                      getName(),getClassLoaders());
                map.setChannelSendOptions(mapSendOptions);
                ((ReplApplContext)this.context).setAttributeMap(map);
                if (getAltDDName() != null) context.setAttribute(Globals.ALT_DD_ATTR, getAltDDName());
            }
            super.start();
        }  catch ( Exception x ) {

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        if ( this.started ) return;
        try {
            CatalinaCluster catclust = (CatalinaCluster)this.getCluster();
            if (this.context == null) this.context = new ReplApplContext(this.getBasePath(), this);
            if ( catclust != null ) {
                ReplicatedMap map = new ReplicatedMap(this,catclust.getChannel(),DEFAULT_REPL_TIMEOUT,
                                                      getName(),getClassLoaders());
                map.setChannelSendOptions(mapSendOptions);
                ((ReplApplContext)this.context).setAttributeMap(map);
                if (getAltDDName() != null) context.setAttribute(Globals.ALT_DD_ATTR, getAltDDName());
            }
            super.start();
        }  catch ( Exception x ) {

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        }
    }
    
    public synchronized void stop() throws LifecycleException
    {
        ReplicatedMap map = (ReplicatedMap)((ReplApplContext)this.context).getAttributeMap();
        if ( map!=null ) {
            map.breakdown();
        }
        if ( !this.started ) return;
        try {
        } catch ( Exception x ){
            log.error("Unable to stop ReplicatedContext",x);

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        try {
            CatalinaCluster catclust = (CatalinaCluster)this.getCluster();
            if (this.context == null) this.context = new ReplApplContext(this);
            if ( catclust != null ) {
                ReplicatedMap map = new ReplicatedMap(this,catclust.getChannel(),DEFAULT_REPL_TIMEOUT,
                                                      getName(),getClassLoaders());
                map.setChannelSendOptions(mapSendOptions);
                ((ReplApplContext)this.context).setAttributeMap(map);
                if (getAltDDName() != null) context.setAttribute(Globals.ALT_DD_ATTR, getAltDDName());
            }
            super.startInternal();
        }  catch ( Exception x ) {

View Full Code Here

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