/**
* Overridden method for rest json message sending.
*
* @param publisherEvent Published event name
* @throws NotificationManagementException
*/
@Override
public void sendMessage(PublisherEvent publisherEvent) throws NotificationManagementException {
// Publisher event will not be null since it is handled by the mgt component.
// Read the relevant subscription from configurations.
JsonSubscription jsonSubscription = subscriptionMap.get(publisherEvent.getEventName());
// New list for aggregated set of endpoints. ie configured and dynamic
List<JsonEndpointInfo> endpoints;
if (jsonSubscription != null) {
endpoints = jsonSubscription.getEndpointInfoList();
HttpClient client = new DefaultHttpClient();
// Get all configured endpoints for message sending
// Send messages to each endpoint in endpoints list
for (JsonEndpointInfo endpoint : endpoints) {
HttpPost post = new HttpPost(endpoint.getEndpoint());
HttpResponse response = null;
StringEntity entity;
post.setHeader(
JsonModuleConstants.CONTENT_TYPE_LABEL, JsonModuleConstants.CONTENT_TYPE_JSON_LABEL);
// Adding basic authentication header to post. If required information are not found,
// building subscription will fail at the time of configuration building
if (endpoint.isAuthenticationRequired()) {
if (log.isDebugEnabled()) {
log.debug("Setting authentication information on request to " + endpoint.getEndpoint());
}
post.setHeader(
JsonModuleConstants.AUTHORIZATION_HEADER,
getBase64EncodedBasicAuthHeader(
endpoint.getUsername(), String.valueOf(endpoint.getPassword())));
} else {
if (log.isDebugEnabled()) {
log.debug("No authentication required to endpoint " + endpoint.getEndpoint());
}
}
// Read JSON content from endpoint configurations. If not present,
// get content form event configurations.
String jsonContent = endpoint.getJsonConfigString();
if (StringUtils.isEmpty(jsonContent)) {
jsonContent = jsonSubscription.getJsonContent();
}
if (StringUtils.isEmpty(jsonContent)) {
log.error(
"No content template found either for event or endpoint "
+ endpoint.getEndpoint()
+ " on event "
+ publisherEvent.getEventName()
+ ", message sending aborted");
continue;
}
String jsonMessage =
getJSONData(
jsonContent,
jsonSubscription.getSubscriptionProperties(),
endpoint.getEndpointsParams(),
publisherEvent.getEventProperties());
try {
entity = new StringEntity(jsonMessage);
post.setEntity(entity);
response = client.execute(post);
log.info(
"Notification message has been posted to "
+ endpoint.getEndpoint()
+ " on event "
+ publisherEvent.getEventName());
if (log.isDebugEnabled() && response != null) {
log.debug(
"Response of HTTP post is "
+ response.getStatusLine()
+ "on post operation to "
+ "endpoint "
+ endpoint.getEndpoint()
+ " on event "
+ publisherEvent.getEventName());
}
} catch (UnsupportedEncodingException e) {
log.error(
"Error while creating StringEntry from given JSON string on event "
+ publisherEvent.getEventName()
+ "to endpoint "
+ endpoint.getEndpoint()
+ " JSON string : "
+ jsonMessage,
e);
} catch (ClientProtocolException e) {
log.error(
"Error in HTTP protocol, error while executing POST operation to endpoint "
+ endpoint.getEndpoint()
+ "on event "
+ publisherEvent.getEventName(),
e);
} catch (IOException e) {
log.error(
"Error while executing POST operation to endpoint "
+ endpoint.getEndpoint()
+ "on "
+ "event "
+ publisherEvent.getEventName(),
e);
} finally {
// Finally closing connections.
post.abort();
}
}
}
}
/**
* Whether a particular type of event is subscribed by this module or not
*
* @return Whether this module is subscribed or not
*/
@Override
public boolean isSubscribed(PublisherEvent publisherEvent)
throws NotificationManagementException {
return publisherEvent != null && subscriptionMap.containsKey(publisherEvent.getEventName());
}