com.continuent.tungsten.replicator.filter
Class ShardFilter

java.lang.Object
  com.continuent.tungsten.replicator.filter.ShardFilter

All Implemented Interfaces:

Filter, ReplicatorPlugin

public class ShardFilter
extends java.lang.Object
implements Filter

Ignores or replicates a database using rules similar to MySQL ignore-db and

Version:

1.0

Author:

Robert Hodges, Stephane Giron

Constructor Summary

ShardFilter()

Method Summary

void	configure(PluginContext context) Complete plug-in configuration.
ReplDBMSEvent	filter(ReplDBMSEvent event) Filter the event.
void	prepare(PluginContext context) Prepare plug-in for use.
void	release(PluginContext context) Release all resources used by plug-in.
void	setDoShard(java.lang.String doShard) Sets a list of one or more shards to replicate.
void	setIgnoreShard(java.lang.String ignoreShard) Sets a list of one or more databases to replicate.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ShardFilter

public ShardFilter()

Method Detail

setDoShard

public void setDoShard(java.lang.String doShard)

Sets a list of one or more shards to replicate. Shard names are comma-separated.

setIgnoreShard

public void setIgnoreShard(java.lang.String ignoreShard)

Sets a list of one or more databases to replicate. Database names are comma-separated.

filter

public ReplDBMSEvent filter(ReplDBMSEvent event)
                     throws ReplicatorException,
                            java.lang.InterruptedException

Filter the event. Filters may transform the event or return null if the event should be discarded. Filters must be prepared to be interrupted, which mechanism is used to cancel processing.

Specified by:

filter in interface Filter

Parameters:

event - An event to be filtered

Returns:

Filtered ReplDBMSEvent or null

Throws:

ReplicatorException - Thrown if there is a processing error

java.lang.InterruptedException - Must be thrown if the filter is interrupted or the replicator may hang

See Also:

Filter.filter(com.continuent.tungsten.replicator.event.ReplDBMSEvent)

configure

public void configure(PluginContext context)
               throws ReplicatorException,
                      java.lang.InterruptedException

Complete plug-in configuration. This is called after setters are invoked at the time that the replicator goes through configuration.

Specified by:

configure in interface ReplicatorPlugin

Throws:

ReplicatorException - Thrown if configuration is incomplete or fails

java.lang.InterruptedException

See Also:

ReplicatorPlugin.configure(com.continuent.tungsten.replicator.plugin.PluginContext)

prepare

public void prepare(PluginContext context)
             throws ReplicatorException,
                    java.lang.InterruptedException

Prepare plug-in for use. This method is assumed to allocate all required resources. It is called before the plug-in performs any operations.

Specified by:

prepare in interface ReplicatorPlugin

Throws:

ReplicatorException - Thrown if resource allocation fails

java.lang.InterruptedException

See Also:

ReplicatorPlugin.prepare(com.continuent.tungsten.replicator.plugin.PluginContext)

release

public void release(PluginContext context)
             throws ReplicatorException,
                    java.lang.InterruptedException

Release all resources used by plug-in. This is called before the plug-in is deallocated.

Specified by:

release in interface ReplicatorPlugin

Throws:

ReplicatorException - Thrown if resource deallocation fails

java.lang.InterruptedException

See Also:

ReplicatorPlugin.release(com.continuent.tungsten.replicator.plugin.PluginContext)