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

Class FileBasedMessagingService

java.lang.Object

com.sap.cds.services.ServiceDelegator

com.sap.cds.services.messaging.service.AbstractMessagingService

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

All Implemented Interfaces:

MessagingService, Service

public class FileBasedMessagingService
extends AbstractMessagingService

Implementation of the MessagingBrokerConnector for the file based messaging service.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	FILE_KIND

Fields inherited from class com.sap.cds.services.messaging.service.AbstractMessagingService

CONTEXT_PARAMETERS_KEY, forceListening, FORMAT_CLOUDEVENTS, queue, runtime, serviceConfig

Fields inherited from interface com.sap.cds.services.messaging.MessagingService

COMPOSITE_NAME, EVENT_MESSAGING_ERROR

Constructor Summary

Constructors

Constructor	Description
FileBasedMessagingService(CdsProperties.Messaging.MessagingServiceConfig serviceConfig, CdsRuntime runtime)

Method Summary

Modifier and Type	Method	Description
protected void	createQueue(String name, Map<String,Object> properties)
protected void	createQueueSubscription(String queue, String topic)
protected void	emitTopicMessage(String topic, TopicMessageEventContext messageEventContext)
protected void	registerQueueListener(String queue, MessagingBrokerQueueListener listener)
protected void	removeQueue(String name)
void	stop()

Methods inherited from class com.sap.cds.services.messaging.service.AbstractMessagingService

cloudEventsFormatter, createOrUpdateQueuesAndSubscriptions, defaultErrorHandler, emit, emit, emit, getTopicMatcher, init, isCloudEventsFormat, on, sendMessageEvent, toFullyQualifiedQueueName, toFullyQualifiedTopicName, validateEventContext

Methods inherited from class com.sap.cds.services.ServiceDelegator

after, before, emit, getDelegatedService, getName

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.sap.cds.services.Service

after, after, after, after, before, before, before, before, emit, getName, on, on, on

Field Details

FILE_KIND

public static final String FILE_KIND

See Also:

• Constant Field Values

Constructor Details

FileBasedMessagingService

public FileBasedMessagingService(CdsProperties.Messaging.MessagingServiceConfig serviceConfig,
 CdsRuntime runtime)
                          throws IOException

Throws:

IOException

Method Details

removeQueue

protected void removeQueue(String name)

Specified by:

removeQueue in class AbstractMessagingService

createQueue

protected void createQueue(String name,
 Map<String,Object> properties)

Specified by:

createQueue in class AbstractMessagingService

createQueueSubscription

protected void createQueueSubscription(String queue,
 String topic)

Specified by:

createQueueSubscription in class AbstractMessagingService

registerQueueListener

protected void registerQueueListener(String queue,
 MessagingBrokerQueueListener listener)
                              throws IOException

Specified by:

registerQueueListener in class AbstractMessagingService

Throws:

IOException

emitTopicMessage

protected void emitTopicMessage(String topic,
 TopicMessageEventContext messageEventContext)

Specified by:

emitTopicMessage in class AbstractMessagingService

stop

public void stop()

Overrides:

stop in class AbstractMessagingService