com.netflix.config.source

Class ZooKeeperConfigurationSource

java.lang.Object

com.netflix.config.source.ZooKeeperConfigurationSource

All Implemented Interfaces:

com.netflix.config.WatchedConfigurationSource, java.io.Closeable, java.lang.AutoCloseable

public class ZooKeeperConfigurationSource
extends java.lang.Object
implements com.netflix.config.WatchedConfigurationSource, java.io.Closeable

Implementation of the dynamic WatchedConfigurationSource for ZooKeeper using Curator. This implementation requires the path to the ZK root parent node that contains the hierarchy of configuration properties. An example is /<my-app>/config Properties are direct ZK child nodes of the root parent ZK node. An example ZK child property node is /<my-app>/config/com.fluxcapacitor.my.property The value is stored in the ZK child property node and can be updated at any time. All servers will receive a ZK Watcher callback and automatically update their value similar to other dynamic configuration sources (ie. DynamoDB, etc.)

Constructor Summary

Constructors

Constructor and Description
ZooKeeperConfigurationSource(org.apache.curator.framework.CuratorFramework client, java.lang.String configRootPath) Creates the pathChildrenCache using the CuratorFramework client and ZK root path node for the config

Method Summary

Modifier and Type	Method and Description
void	addUpdateListener(com.netflix.config.WatchedUpdateListener l)
void	close()
protected void	fireEvent(com.netflix.config.WatchedUpdateResult result)
java.util.Map<java.lang.String,java.lang.Object>	getCurrentData()
void	removeUpdateListener(com.netflix.config.WatchedUpdateListener l)
void	start() Adds a listener to the pathChildrenCache, initializes the cache, then starts the cache-management background thread

Methods inherited from class java.lang.Object

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

Constructor Detail

ZooKeeperConfigurationSource

public ZooKeeperConfigurationSource(org.apache.curator.framework.CuratorFramework client,
                                    java.lang.String configRootPath)

Creates the pathChildrenCache using the CuratorFramework client and ZK root path node for the config

Parameters:

client -

configRootPath - to ZK root parent node for the rest of the configuration properties (ie. /<my-app>/config)

Method Detail

start

public void start()
           throws java.lang.Exception

Adds a listener to the pathChildrenCache, initializes the cache, then starts the cache-management background thread

Throws:

java.lang.Exception

getCurrentData

public java.util.Map<java.lang.String,java.lang.Object> getCurrentData()
                                                                throws java.lang.Exception

Specified by:

getCurrentData in interface com.netflix.config.WatchedConfigurationSource

Throws:

java.lang.Exception

addUpdateListener

public void addUpdateListener(com.netflix.config.WatchedUpdateListener l)

Specified by:

addUpdateListener in interface com.netflix.config.WatchedConfigurationSource

removeUpdateListener

public void removeUpdateListener(com.netflix.config.WatchedUpdateListener l)

Specified by:

removeUpdateListener in interface com.netflix.config.WatchedConfigurationSource

fireEvent

protected void fireEvent(com.netflix.config.WatchedUpdateResult result)

close

public void close()

Specified by:

close in interface java.io.Closeable

Specified by:

close in interface java.lang.AutoCloseable