/**
* Send Conference POST request to API endpoint which is used for allocating new conferences in
* reservation system.
*
* @param ownerEmail email of new conference owner
* @param mucRoomName full name of MUC room that is hosting the conference.
* {room_name}@{muc.server.net}
* @return <tt>ApiResult</tt> that contains system response. It will contain <tt>Conference</tt>
* instance filled with data from the reservation system if everything goes OK.
* @throws FaultTolerantRESTRequest.RetryExhaustedException When the number of retries to submit
* the request for the conference data is reached
* @throws UnsupportedEncodingException When the room data have the encoding that does not play
* with UTF8 standard
*/
public ApiResult createNewConference(String ownerEmail, String mucRoomName)
throws FaultTolerantRESTRequest.RetryExhaustedException, UnsupportedEncodingException {
Conference conference = new Conference(mucRoomName, ownerEmail, new Date());
HttpPost post = new HttpPost(baseUrl + "/conference");
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(1);
Map<String, Object> jsonMap = conference.createJSonMap();
for (Map.Entry<String, Object> entry : jsonMap.entrySet()) {
nameValuePairs.add(new BasicNameValuePair(entry.getKey(), String.valueOf(entry.getValue())));
}
post.setEntity(new UrlEncodedFormEntity(nameValuePairs, "UTF8"));
logger.info("Sending post: " + jsonMap);
CreateConferenceResponseParser conferenceResponseParser =
new CreateConferenceResponseParser(conference);
FaultTolerantRESTRequest faultTolerantRESTRequest =
new FaultTolerantRESTRequest(post, conferenceResponseParser, retriesCreate, httpClient);
return faultTolerantRESTRequest.submit();
}
/**
* Finds conference for given ID assigned by the reservation system.
*
* @param id identifier of the conference to find.
* @return <tt>Conference</tt> for given <tt>id</tt> or <tt>null</tt> if not found.
*/
private Conference findConferenceForId(Number id) {
for (Conference conference : conferenceMap.values()) {
if (conference.getId().equals(id)) {
return conference;
}
}
return null;
}
/** {@inheritDoc} */
public synchronized Result createConference(String creator, String mucRoomName) {
Conference conference = conferenceMap.get(mucRoomName);
if (conference == null) {
// Create new conference
try {
ApiResult result = api.createNewConference(creator, mucRoomName);
if (result.getError() == null) {
conference = result.getConference();
conferenceMap.put(mucRoomName, conference);
} else if (result.getStatusCode() == 409 && result.getError().getConflictId() != null) {
Number conflictId = result.getError().getConflictId();
// Conference already exists(check if we have it locally)
conference = findConferenceForId(conflictId);
logger.info("Conference '" + mucRoomName + "' already " + "allocated, id: " + conflictId);
// do GET conflict conference
if (conference == null) {
ApiResult getResult = api.getConference(conflictId);
if (getResult.getConference() != null) {
conference = getResult.getConference();
// Fill full room name as it is not transferred
// over REST API
conference.setMucRoomName(mucRoomName);
conferenceMap.put(mucRoomName, conference);
} else {
logger.error("API error: " + result);
return new Result(RESULT_INTERNAL_ERROR, result.getError().getMessage());
}
}
} else {
// Other error
logger.error("API error: " + result);
return new Result(RESULT_INTERNAL_ERROR, result.getError().getMessage());
}
} catch (FaultTolerantRESTRequest.RetryExhaustedException e) {
logger.error(e, e);
return new Result(RESULT_INTERNAL_ERROR, e.getMessage());
} catch (UnsupportedEncodingException e) {
logger.error(e, e);
return new Result(RESULT_INTERNAL_ERROR, e.getMessage());
}
}
// Verify owner == creator
if (creator.equals(conference.getOwner())) {
return new Result(RESULT_OK);
} else {
logger.error(
"Room " + mucRoomName + ", conflict : " + creator + " != " + conference.getOwner());
return new Result(RESULT_CONFLICT);
}
}
/** Deletes conference for given <tt>mucRoomName</tt> through the API. */
Result deleteConference(String mucRoomName) {
Conference conference = conferenceMap.get(mucRoomName);
if (conference != null) {
// Delete conference
Number id = conference.getId();
int result = deleteConference(id);
if (result == RESULT_OK) {
conferenceMap.remove(mucRoomName);
} else {
// Other error
return new Result(result);
}
}
return new Result(RESULT_OK);
}
@Override
public void run() {
synchronized (RESTReservations.this) {
Iterator<Conference> conferenceIterator = conferenceMap.values().iterator();
while (conferenceIterator.hasNext()) {
Conference conference = conferenceIterator.next();
Date startTimeDate = conference.getStartTime();
if (startTimeDate == null) {
logger.error("No 'start_time' for conference: " + conference.getName());
continue;
}
long startTime = startTimeDate.getTime();
long duration = conference.getDuration();
// Convert duration to millis
duration = duration * 1000L;
long now = System.currentTimeMillis();
if (now - startTime > duration - EXPIRE_INTERVAL) {
// Destroy the conference
String mucRoomName = conference.getMucRoomName();
deleteConference(conference.getId());
conferenceIterator.remove();
focusManager.destroyConference(mucRoomName, "Scheduled conference duration exceeded.");
}
}
}
}
/**
* Parses JSON string returned in HTTP response and converts it to <tt>Conference</tt> instance.
*
* @param conference <tt>Conference</tt> instance that contains the data returned by API endpoint.
* @param response HTTP response returned by the API endpoint.
* @return <tt>Conference</tt> instance that contains the data returned by API endpoint.
* @throws IOException if any IO problems occur.
* @throws ParseException if any problems with JSON parsing occur.
*/
private Conference readConferenceResponse(Conference conference, HttpResponse response)
throws IOException, ParseException {
BufferedReader rd =
new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
if (conference != null) {
conferenceJson.setForUpdate(conference);
}
jsonParser.parse(rd, conferenceJson);
if (conference == null) {
conference = conferenceJson.getResult();
}
logger.info("ID: " + conference.getId());
logger.info("PIN: " + conference.getPin());
logger.info("URL: " + conference.getUrl());
logger.info("SIP ID: " + conference.getSipId());
logger.info("START TIME: " + conference.getStartTime());
logger.info("DURATION: " + conference.getDuration());
return conference;
}
