Package de.iip_ecosphere.platform.configuration.cfg

Class StatusCache

java.lang.Object

de.iip_ecosphere.platform.configuration.cfg.StatusCache

public class StatusCache
extends Object

Simple pre-processing cache of StatusMessage for UI display.

Author:

Holger Eichelberger, SSE

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	StatusCache.ServiceDeviceState	Denotes the state of a service on a certain device.

Field Summary

Fields

Modifier and Type	Field	Description
private static Map<String,Map<String,String>>	serviceStates
private static de.iip_ecosphere.platform.transport.connectors.ReceptionCallback<de.iip_ecosphere.platform.transport.status.StatusMessage>	statusCallback

Constructor Summary

Constructors

Constructor	Description
StatusCache()

Method Summary

Modifier and Type	Method	Description
private static Map<String,String>	ensureServicePerDevice(de.iip_ecosphere.platform.transport.status.StatusMessage message)	Ensures the existence of a device-state map for the service message message.
static void	getServiceStates(String sId, Consumer<StatusCache.ServiceDeviceState> consumer)	Returns the states of service sId on all known devices.
private static void	handleServiceStateChange(de.iip_ecosphere.platform.transport.status.StatusMessage message)	Handles a service state change.
static void	start()	Starts the status cache.
static void	stop()	Stops the status cache.

Methods inherited from class java.lang.Object

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

Field Details

serviceStates

private static Map<String,Map<String,String>> serviceStates

statusCallback

private static de.iip_ecosphere.platform.transport.connectors.ReceptionCallback<de.iip_ecosphere.platform.transport.status.StatusMessage> statusCallback

Constructor Details

StatusCache

public StatusCache()

Method Details

ensureServicePerDevice

private static Map<String,String> ensureServicePerDevice(de.iip_ecosphere.platform.transport.status.StatusMessage message)

Ensures the existence of a device-state map for the service message message.

Parameters:

message - the message

Returns:

the device-state map

handleServiceStateChange

private static void handleServiceStateChange(de.iip_ecosphere.platform.transport.status.StatusMessage message)

Handles a service state change.

Parameters:

message - the message indicating the service status change

getServiceStates

public static void getServiceStates(String sId,
 Consumer<StatusCache.ServiceDeviceState> consumer)

Returns the states of service sId on all known devices. If a device is not mentioned, the service is not running there.

Parameters:

sId - the service id

consumer - a consumer receiving the data

start

public static void start()

Starts the status cache.

stop

public static void stop()

Stops the status cache.