org.apache.dubbo.registry.client

Class FileSystemServiceDiscovery

java.lang.Object

org.apache.dubbo.registry.client.AbstractServiceDiscovery

org.apache.dubbo.registry.client.FileSystemServiceDiscovery

All Implemented Interfaces:

Comparable<Prioritized>, EventListener, Prioritized, ServiceDiscovery

public class FileSystemServiceDiscovery
extends AbstractServiceDiscovery
implements EventListener<ServiceInstancesChangedEvent>

File System ServiceDiscovery implementation

Since:

2.7.5

See Also:

FileSystemDynamicConfiguration

Field Summary

Fields inherited from interface org.apache.dubbo.common.lang.Prioritized

COMPARATOR, MAX_PRIORITY, MIN_PRIORITY, NORMAL_PRIORITY

Constructor Summary

Constructors

Constructor and Description
FileSystemServiceDiscovery()

Method Summary

Modifier and Type	Method and Description
void	destroy() Destroy the ServiceDiscovery
void	doRegister(ServiceInstance serviceInstance) It should be implement in kinds of service discovers.
void	doUpdate(ServiceInstance serviceInstance) It should be implement in kinds of service discovers.
List<ServiceInstance>	getInstances(String serviceName) Gets all service instances by the specified service name.
Set<String>	getServices() Gets all service names
URL	getUrl()
void	initialize(URL registryURL) Initializes the ServiceDiscovery
void	onConfigChanged(ConfigChangedEvent event)
void	onEvent(ServiceInstancesChangedEvent event)
void	unregister(ServiceInstance serviceInstance) Unregisters an instance of ServiceInstance.

Methods inherited from class org.apache.dubbo.registry.client.AbstractServiceDiscovery

getLocalInstance, register, update

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.dubbo.event.EventListener

findEventType, findEventType, findEventType, getPriority

Methods inherited from interface org.apache.dubbo.common.lang.Prioritized

compareTo

Methods inherited from interface org.apache.dubbo.registry.client.ServiceDiscovery

addServiceInstancesChangedListener, dispatchServiceInstancesChangedEvent, dispatchServiceInstancesChangedEvent, dispatchServiceInstancesChangedEvent, dispatchServiceInstancesChangedEvent, getDefaultPageSize, getInstances, getInstances, getInstances, removeServiceInstancesChangedListener, toString

Constructor Detail

FileSystemServiceDiscovery

public FileSystemServiceDiscovery()

Method Detail

onEvent

public void onEvent(ServiceInstancesChangedEvent event)

initialize

public void initialize(URL registryURL)
                throws Exception

Description copied from interface: ServiceDiscovery

Initializes the ServiceDiscovery

Specified by:

initialize in interface ServiceDiscovery

Parameters:

registryURL - the url to connect service registry

Throws:

Exception - If met with error

onConfigChanged

public void onConfigChanged(ConfigChangedEvent event)

destroy

public void destroy()
             throws Exception

Description copied from interface: ServiceDiscovery

Destroy the ServiceDiscovery

Specified by:

destroy in interface ServiceDiscovery

Throws:

Exception - If met with error

getInstances

public List<ServiceInstance> getInstances(String serviceName)

Description copied from interface: ServiceDiscovery

Gets all service instances by the specified service name.

Specified by:

getInstances in interface ServiceDiscovery

Parameters:

serviceName - the service name

Returns:

non-null List

getUrl

public URL getUrl()

Specified by:

getUrl in interface ServiceDiscovery

doRegister

public void doRegister(ServiceInstance serviceInstance)

Description copied from class: AbstractServiceDiscovery

It should be implement in kinds of service discovers.

Specified by:

doRegister in class AbstractServiceDiscovery

doUpdate

public void doUpdate(ServiceInstance serviceInstance)

Description copied from class: AbstractServiceDiscovery

It should be implement in kinds of service discovers.

Specified by:

doUpdate in class AbstractServiceDiscovery

unregister

public void unregister(ServiceInstance serviceInstance)
                throws RuntimeException

Description copied from interface: ServiceDiscovery

Unregisters an instance of ServiceInstance.

Specified by:

unregister in interface ServiceDiscovery

Parameters:

serviceInstance - an instance of ServiceInstance to be unregistered

Throws:

RuntimeException - if failed

getServices

public Set<String> getServices()

Description copied from interface: ServiceDiscovery

Gets all service names

Specified by:

getServices in interface ServiceDiscovery

Returns:

non-null read-only Set