怎么开发一款elasticseach的插件

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<dependency>
<groupId>org.elasticsearch</groupId>
<artifactId>elasticsearch</artifactId>
<version>1.2.1</version>
<scope>provided</scope>
</dependency>

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plugin=org.elasticsearch.plugin.zhaoyanblog.myplugin

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package org.elasticsearch.plugin.zhaoyanblog;
import org.elasticsearch.common.collect.ImmutableList;
import org.elasticsearch.common.inject.Module;
import org.elasticsearch.plugins.AbstractPlugin;
import org.elasticsearch.zhaoyanblog.MyModule;
 
public class MyPlugin extend org.elasticsearch.plugins.AbstractPlugin
{
//我们的插件Module
private static final Collection<Class<? extends Module>> modules
= ImmutableList.<Class<? extends Module>> of(MyModule.class);
 
/**
* {@inheritDoc}
*/
public String name()
{
//插件名字
return "my-plugin";
}
 
/**
* {@inheritDoc}
*/
public String description()
{
//插件描述
return "my first plugin";
}
 
@Override
public Collection<Class<? extends Module>> modules()
{
return modules;
}
 
}

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package org.elasticsearch.zhaoyanblog;
import org.elasticsearch.common.inject.AbstractModule;
 
public class MyModule extends AbstractModule
{
 
/**
* {@inheritDoc}
*/
@Override
protected void configure()
{
bind(MyService.class).asEagerSingleton();
}
 
}

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package org.elasticsearch.zhaoyanblog;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.indices.IndicesService;
 
public class MyService
{
@Inject
public MyService(Settings setting, IndicesService indicesService)
{
 
//your code
}
}