/**
* Add a stream definition using the Event stream publisher.
*
* @param streamDefinitionBean The stream definition bean class.
*/
public String addStreamDefinition(StreamDefinitionBean streamDefinitionBean)
throws AnalyticsWebServiceException, MalformedStreamDefinitionException {
StreamDefinition streamDefinition = Utils.getStreamDefinition(streamDefinitionBean);
try {
eventStreamService.addEventStreamDefinition(streamDefinition);
return streamDefinition.getStreamId();
} catch (Exception e) {
logger.error(
"Unable to set the stream definition: ["
+ streamDefinition.getName()
+ ":"
+ streamDefinition.getVersion()
+ "]"
+ e.getMessage(),
e);
throw new AnalyticsWebServiceException(
"Unable to set the stream definition: ["
+ streamDefinition.getName()
+ ":"
+ streamDefinition.getVersion()
+ "], "
+ e.getMessage(),
e);
}
}
private StreamDefinition validateAndGetStreamDefinition(String name, String version)
throws AnalyticsWebServiceException {
StreamDefinition streamDefinition;
try {
if (name != null && version != null) {
streamDefinition = eventStreamService.getStreamDefinition(name, version);
} else if (name != null) {
streamDefinition = eventStreamService.getStreamDefinition(name);
} else {
throw new AnalyticsWebServiceException("The stream name is not provided");
}
} catch (Exception e) {
logger.error("Unable to get the stream definition: " + e.getMessage(), e);
throw new AnalyticsWebServiceException(
"Unable to get the stream definition: " + e.getMessage(), e);
}
return streamDefinition;
}
/**
* Publishes events to a given stream represented by stream id.
*
* @param eventBean The event bean representing the event data.
* @throws AnalyticsWebServiceException
*/
public void publishEvent(EventBean eventBean) throws AnalyticsWebServiceException {
try {
StreamDefinition streamDefinition =
validateAndGetStreamDefinition(eventBean.getStreamName(), eventBean.getStreamVersion());
Event event = Utils.getEvent(eventBean, streamDefinition);
eventStreamService.publish(event);
} catch (Exception e) {
logger.error("unable to publish event: " + e.getMessage(), e);
throw new AnalyticsWebServiceException("unable to publish event: " + e.getMessage(), e);
}
}
private static boolean validateSiddhiStreamWithDatabridgeStream(
String streamName,
String streamVersion,
org.wso2.siddhi.query.api.definition.StreamDefinition siddhiStreamDefinition)
throws ExecutionPlanConfigurationException, ExecutionPlanDependencyValidationException {
if (siddhiStreamDefinition == null) {
throw new ExecutionPlanDependencyValidationException(
streamName + EventProcessorConstants.STREAM_SEPARATOR + streamVersion,
"Cannot validate null Siddhi stream for the stream: "
+ streamName
+ EventProcessorConstants.STREAM_SEPARATOR
+ streamVersion
+ " ");
}
EventStreamService eventStreamService = EventProcessorValueHolder.getEventStreamService();
try {
StreamDefinition streamDefinition =
eventStreamService.getStreamDefinition(streamName, streamVersion);
if (streamDefinition != null) {
String siddhiAttributeName;
int attributeCount = 0;
int streamSize =
(streamDefinition.getMetaData() == null ? 0 : streamDefinition.getMetaData().size())
+ (streamDefinition.getCorrelationData() == null
? 0
: streamDefinition.getCorrelationData().size())
+ (streamDefinition.getPayloadData() == null
? 0
: streamDefinition.getPayloadData().size());
if (siddhiStreamDefinition.getAttributeList().size() != streamSize) {
throw new ExecutionPlanDependencyValidationException(
streamName + EventProcessorConstants.STREAM_SEPARATOR + streamVersion,
"No of attributes in stream "
+ streamName
+ EventProcessorConstants.STREAM_SEPARATOR
+ streamVersion
+ " do not match the no of attributes in Siddhi stream");
}
if (streamDefinition.getMetaData() != null) {
for (Attribute attribute : streamDefinition.getMetaData()) {
siddhiAttributeName = EventProcessorConstants.META_PREFIX + attribute.getName();
org.wso2.siddhi.query.api.definition.Attribute.Type type =
siddhiStreamDefinition.getAttributeType(siddhiAttributeName);
// null check for type not required since an exception is thrown by Siddhi
// StreamDefinition.getAttributeType() method for non-existent attributes
if (siddhiStreamDefinition.getAttributePosition(siddhiAttributeName)
!= attributeCount++) {
throw new ExecutionPlanDependencyValidationException(
streamName + EventProcessorConstants.STREAM_SEPARATOR + streamVersion,
"Stream "
+ streamName
+ EventProcessorConstants.STREAM_SEPARATOR
+ streamVersion
+ "; Attribute positions do not match for attribute: "
+ attribute.getName());
}
if (!isMatchingType(type, attribute.getType())) {
throw new ExecutionPlanDependencyValidationException(
streamName + EventProcessorConstants.STREAM_SEPARATOR + streamVersion,
"Stream "
+ streamName
+ EventProcessorConstants.STREAM_SEPARATOR
+ streamVersion
+ "; Type mismatch for attribute: "
+ attribute.getName());
}
}
}
if (streamDefinition.getCorrelationData() != null) {
for (Attribute attribute : streamDefinition.getCorrelationData()) {
siddhiAttributeName = EventProcessorConstants.CORRELATION_PREFIX + attribute.getName();
org.wso2.siddhi.query.api.definition.Attribute.Type type =
siddhiStreamDefinition.getAttributeType(siddhiAttributeName);
// null check for type not required since an exception is thrown by Siddhi
// StreamDefinition.getAttributeType() method for non-existent attributes
if (siddhiStreamDefinition.getAttributePosition(siddhiAttributeName)
!= attributeCount++) {
throw new ExecutionPlanDependencyValidationException(
streamName + EventProcessorConstants.STREAM_SEPARATOR + streamVersion,
"Stream "
+ streamName
+ EventProcessorConstants.STREAM_SEPARATOR
+ streamVersion
+ "; Attribute positions do not match for attribute: "
+ attribute.getName());
}
if (!isMatchingType(type, attribute.getType())) {
throw new ExecutionPlanDependencyValidationException(
streamName + EventProcessorConstants.STREAM_SEPARATOR + streamVersion,
"Stream "
+ streamName
+ EventProcessorConstants.STREAM_SEPARATOR
+ streamVersion
+ "; Type mismatch for attribute: "
+ attribute.getName());
}
}
}
if (streamDefinition.getPayloadData() != null) {
for (Attribute attribute : streamDefinition.getPayloadData()) {
siddhiAttributeName = attribute.getName();
org.wso2.siddhi.query.api.definition.Attribute.Type type =
siddhiStreamDefinition.getAttributeType(siddhiAttributeName);
// null check for type not required since an exception is thrown by Siddhi
// StreamDefinition.getAttributeType() method for non-existent attributes
if (siddhiStreamDefinition.getAttributePosition(siddhiAttributeName)
!= attributeCount++) {
throw new ExecutionPlanDependencyValidationException(
streamName + EventProcessorConstants.STREAM_SEPARATOR + streamVersion,
"Stream "
+ streamName
+ EventProcessorConstants.STREAM_SEPARATOR
+ streamVersion
+ "; Attribute positions do not match for attribute: "
+ attribute.getName());
}
if (!isMatchingType(type, attribute.getType())) {
throw new ExecutionPlanDependencyValidationException(
streamName + EventProcessorConstants.STREAM_SEPARATOR + streamVersion,
"Stream "
+ streamName
+ EventProcessorConstants.STREAM_SEPARATOR
+ streamVersion
+ "; Type mismatch for attribute: "
+ attribute.getName());
}
}
}
return true;
}
} catch (EventStreamConfigurationException e) {
throw new ExecutionPlanConfigurationException(
"Error while validating stream definition with store : " + e.getMessage(), e);
} catch (AttributeNotExistException e) {
throw new ExecutionPlanDependencyValidationException(
streamName + EventProcessorConstants.STREAM_SEPARATOR + streamVersion, e.getMessage());
}
throw new ExecutionPlanDependencyValidationException(
streamName + EventProcessorConstants.STREAM_SEPARATOR + streamVersion,
"Stream "
+ streamName
+ EventProcessorConstants.STREAM_SEPARATOR
+ streamVersion
+ " does not exist");
}