com.eurotech.ermes
Class ErmesComponent

java.lang.Object
  com.eurotech.ermes.ErmesComponent

All Implemented Interfaces:

CloudClientListener, ConfigurableComponent, org.osgi.service.event.EventHandler

public class ErmesComponent
extends Object
implements CloudClientListener, org.osgi.service.event.EventHandler, ConfigurableComponent

Constructor Summary

ErmesComponent()

Method Summary

protected void	activate(org.osgi.service.component.ComponentContext componentContext, Map<String,Object> properties)
void	createOutfilesLocation()
protected void	deactivate(org.osgi.service.component.ComponentContext componentContext)
void	doPublish()
void	doPublish(String topic)
void	doWrite()
void	handleEvent(org.osgi.service.event.Event event)
void	onConnectionEstablished() Called when the CloudClient has successfully connected with the broker.
void	onConnectionLost() Called when the client has lost its connection with the broker.
void	onControlMessageArrived(String deviceId, String appTopic, EsfPayload msg, int qos, boolean retain) Called by the CloudClient when it receives a published control message from the broker.
void	onMessageArrived(String deviceId, String appTopic, EsfPayload msg, int qos, boolean retain) Called by the client when it receives a published data message from the broker.
void	onMessageConfirmed(int messageId, String appTopic) Called by the CloudClient when a published message has been fully acknowledged by the broker, as appropriate for the quality of service.
void	onMessagePublished(int messageId, String appTopic) Called by the CloudClient when a message has been transfered from the publishing queue to the underlying DataTransportService for publishing on the wire.
void	setClockService(ClockService clockService)
void	setCloudService(CloudService cloudService)
void	setConfigurationService(ConfigurationService configurationService)
void	setConnectionFactory(org.osgi.service.io.ConnectionFactory connectionFactory)
void	setPositionService(PositionService positionService)
void	setUsbService(UsbService usbService)
void	unsetClockService(ClockService clockService)
void	unsetCloudService(CloudService cloudService)
void	unsetConfigurationService(ConfigurationService configurationService)
void	unsetConnectionFactory(org.osgi.service.io.ConnectionFactory connectionFactory)
void	unsetPositionService(PositionService positionService)
void	unsetUsbService(UsbService usbService)
void	updated(Map<String,Object> properties)

Methods inherited from class java.lang.Object

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

Constructor Detail

ErmesComponent

public ErmesComponent()

Method Detail

setCloudService

public void setCloudService(CloudService cloudService)

unsetCloudService

public void unsetCloudService(CloudService cloudService)

setPositionService

public void setPositionService(PositionService positionService)

unsetPositionService

public void unsetPositionService(PositionService positionService)

setConnectionFactory

public void setConnectionFactory(org.osgi.service.io.ConnectionFactory connectionFactory)

unsetConnectionFactory

public void unsetConnectionFactory(org.osgi.service.io.ConnectionFactory connectionFactory)

setConfigurationService

public void setConfigurationService(ConfigurationService configurationService)

unsetConfigurationService

public void unsetConfigurationService(ConfigurationService configurationService)

setClockService

public void setClockService(ClockService clockService)

unsetClockService

public void unsetClockService(ClockService clockService)

setUsbService

public void setUsbService(UsbService usbService)

unsetUsbService

public void unsetUsbService(UsbService usbService)

activate

protected void activate(org.osgi.service.component.ComponentContext componentContext,
                        Map<String,Object> properties)

deactivate

protected void deactivate(org.osgi.service.component.ComponentContext componentContext)

updated

public void updated(Map<String,Object> properties)

doPublish

public void doPublish()

doPublish

public void doPublish(String topic)

onControlMessageArrived

public void onControlMessageArrived(String deviceId,
                                    String appTopic,
                                    EsfPayload msg,
                                    int qos,
                                    boolean retain)

Description copied from interface: CloudClientListener

Called by the CloudClient when it receives a published control message from the broker. If the message received has a binary payload that it has NOT been encoded using the the EsfPayload class, the received bytes will be set as the body field of a new EsfPaylaod instance which is passed to the callback Listener interface.

Specified by:

onControlMessageArrived in interface CloudClientListener

Parameters:

deviceId - The deviceId this message was addressed to.

appTopic - The appTopic the message arrived on.

msg - The EsfPayload that arrived.

qos - The Quality of Service that the message was received on.

retain - Whether the message was retained by the broker.

onMessageArrived

public void onMessageArrived(String deviceId,
                             String appTopic,
                             EsfPayload msg,
                             int qos,
                             boolean retain)

Description copied from interface: CloudClientListener

Called by the client when it receives a published data message from the broker. If the message received has a binary payload that it has NOT been encoded using the the EsfPayload class, the received bytes will be set as the body field of a new EsfPaylaod instance which is passed to the callback Listener interface.

Specified by:

onMessageArrived in interface CloudClientListener

Parameters:

deviceId - The asset ID of the semanticTopic prefix the message arrived on.

appTopic - The appTopic the message arrived on.

msg - The EsfPayload that arrived.

qos - The Quality of Service that the message was received on.

retain - Whether the message was retained by the broker.

onConnectionLost

public void onConnectionLost()

Description copied from interface: CloudClientListener

Called when the client has lost its connection with the broker. Depending on the DataService configuration, the client will attempt to reconnect and call the CloudClientListener.onConnectionEstablished() method upon a successful reconnect. This is only a notification, the callback handler should not attempt to handle the reconnect.
If the bundle using the client relies on subscriptions beyond the default ones, it is responsibility of the application to implement the CloudClientListener.onConnectionEstablished() callback method to restore the subscriptions it needs after a connection loss.

Specified by:

onConnectionLost in interface CloudClientListener

onConnectionEstablished

public void onConnectionEstablished()

Description copied from interface: CloudClientListener

Called when the CloudClient has successfully connected with the broker.
If the bundle using the client relies on subscriptions beyond the default ones, it is responsibility of the application to implement the CloudClientListener.onConnectionEstablished() callback method to restore the subscriptions it needs after a connection loss.

Specified by:

onConnectionEstablished in interface CloudClientListener

onMessagePublished

public void onMessagePublished(int messageId,
                               String appTopic)

Description copied from interface: CloudClientListener

Called by the CloudClient when a message has been transfered from the publishing queue to the underlying DataTransportService for publishing on the wire.

Specified by:

onMessagePublished in interface CloudClientListener

onMessageConfirmed

public void onMessageConfirmed(int messageId,
                               String appTopic)

Description copied from interface: CloudClientListener

Called by the CloudClient when a published message has been fully acknowledged by the broker, as appropriate for the quality of service. The published method is not called for QoS 0 publications.

Specified by:

onMessageConfirmed in interface CloudClientListener

Parameters:

messageId - The message id of the published message

handleEvent

public void handleEvent(org.osgi.service.event.Event event)

Specified by:

handleEvent in interface org.osgi.service.event.EventHandler

createOutfilesLocation

public void createOutfilesLocation()

doWrite

public void doWrite()
             throws IOException

Throws:

IOException