com.sap.cds.services.impl.messaging.file

Class FileBasedMessagingBroker

java.lang.Object

com.sap.cds.services.impl.messaging.file.FileBasedMessagingBroker

public class FileBasedMessagingBroker
extends Object

Implementation of the internal file based messaging service for local environment tests.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	FileBasedMessagingBroker.QueueListener Helper interface for queue listeners

Method Summary

Modifier and Type	Method and Description
static FileBasedMessagingBroker	connect(String name, File exchangeFile) Installs the file watcher of the specified file.
void	emitMessage(String topic, String message) Emits a new message to the file.
void	listenToQueue(String queue, FileBasedMessagingBroker.QueueListener listener) Registers a listener to the specified queue.
void	subscribeTopic(String queue, String topic) Subscribes a topic to the specified queue.

Methods inherited from class java.lang.Object

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

Method Detail

connect

public static FileBasedMessagingBroker connect(String name,
                                               File exchangeFile)
                                        throws IOException

Installs the file watcher of the specified file.

Parameters:

name - service name

exchangeFile - file to be used for the message exchange

Returns:

the file based broker instance

Throws:

IOException - in case, the service is already connected or the file watching initialization fails

emitMessage

public void emitMessage(String topic,
                        String message)

Emits a new message to the file.

Parameters:

topic - the topic the message should be send to

message - the event message to be sent

listenToQueue

public void listenToQueue(String queue,
                          FileBasedMessagingBroker.QueueListener listener)

Registers a listener to the specified queue.

Parameters:

queue - the queue to listen on

listener - the listener

subscribeTopic

public void subscribeTopic(String queue,
                           String topic)

Subscribes a topic to the specified queue.

Parameters:

queue - the queue to subscribe to the topic

topic - the topic to be subscribed on