io.fabric8.process.spring.boot.registry

Class ZooKeeperProcessRegistry

java.lang.Object

io.fabric8.process.spring.boot.registry.ZooKeeperProcessRegistry

All Implemented Interfaces:

ProcessRegistry

public class ZooKeeperProcessRegistry
extends Object
implements ProcessRegistry

ProcessRegistry implementation reading properties from the ZooKeeper nodes.

If curator-framework jar is present in the classpath, ZooKeeperProcessRegistry will be created. ZooKeeperProcessRegistry attempts to read properties values from the ZooKeeper server.

In particular ZooKeeper registry will try to connect to the Fabric8 ZooKeeper runtime registry and read properties from it. The default coordinates of Fabric8 runtime registry are localhost:2181 (2181 is the default port used by the Fabric8 to start ZooKeeper on). If you would like to change it, set fabric8.process.registry.zk.hosts system property to the customized list of hosts:

java -Dfabric8.process.registry.zk.hosts=host1:5555,host2:6666 -jar my-service.jar

ZooKeeper registry interprets dots in the properties names as the slashes in ZNode paths. For example foo.bar property will be resolved as the foo/bar ZNode path.

   @Value("${foo.bar}") // try to read foo/bar ZNode from the ZooKeeper
   String bar;
 

Constructor Summary

Constructors

Constructor and Description
ZooKeeperProcessRegistry(String hosts)

Method Summary

Methods

Modifier and Type	Method and Description
static ZooKeeperProcessRegistry	autodetectZooKeeperProcessRegistry()
protected String	convertPropertiesKeyToPath(String key)
String	hosts()
String	readProperty(String key) Reads property from the process registry.

Methods inherited from class java.lang.Object

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

Constructor Detail

ZooKeeperProcessRegistry

public ZooKeeperProcessRegistry(String hosts)

Method Detail

autodetectZooKeeperProcessRegistry

public static ZooKeeperProcessRegistry autodetectZooKeeperProcessRegistry()

hosts

public String hosts()

readProperty

public String readProperty(String key)

Description copied from interface: ProcessRegistry

Reads property from the process registry.

Specified by:

readProperty in interface ProcessRegistry

Parameters:

key - identifies uniquely property to be resolved.

Returns:

value of the property or null if property is not available

convertPropertiesKeyToPath

protected String convertPropertiesKeyToPath(String key)