public DeferredResult newDeferredResult(final Long userId) {
final DeferredResult<Object> deferredResult = new DeferredResult<Object>();
deferredResult.onCompletion(
new Runnable() {
@Override
public void run() {
Queue<DeferredResult<Object>> queue = userIdToDeferredResultMap.get(userId);
if (queue != null) {
queue.remove(deferredResult);
deferredResult.setResult("");
}
}
});
deferredResult.onTimeout(
new Runnable() {
@Override
public void run() {
deferredResult.setErrorResult("");
}
});
Queue<DeferredResult<Object>> queue = userIdToDeferredResultMap.get(userId);
if (queue == null) {
queue = new LinkedBlockingDeque<DeferredResult<Object>>();
userIdToDeferredResultMap.put(userId, queue);
}
queue.add(deferredResult);
return deferredResult;
}
public void offline(final Long userId) {
Queue<DeferredResult<Object>> queue = userIdToDeferredResultMap.remove(userId);
if (queue != null) {
for (DeferredResult<Object> result : queue) {
try {
result.setResult("");
} catch (Exception e) {
// ignore
}
}
}
}
@RequestMapping(Routes.USER_AUTH)
public DeferredResult<GitkitUser> authenticateGitkitToken(@RequestBody final String token) {
DeferredResult<GitkitUser> dr = new DeferredResult<>();
GitkitClientService gcs = new GitkitClientService();
try {
GitkitUser gu = gcs.getClient().validateToken(token);
dr.setResult(gu);
} catch (GitkitClientException gkce) {
dr.setErrorResult("No good.");
}
return dr;
}
public void push(final Long userId, final Object data) {
Queue<DeferredResult<Object>> queue = userIdToDeferredResultMap.get(userId);
if (queue == null) {
return;
}
for (DeferredResult<Object> deferredResult : queue) {
if (!deferredResult.isSetOrExpired()) {
try {
deferredResult.setResult(data);
} catch (Exception e) {
queue.remove(deferredResult);
}
}
}
}
private void commandPong(DeferredResult<Result> defResult, String usernameFromToken) {
UsersService usersServ = context.getBean(UsersService.class);
usersServ.updateCallsForUser(usernameFromToken);
Users user = usersServ.getUserByName(usernameFromToken).get(0);
defResult.setResult(new Result("pong", user.getNumberOfCalls()));
}
/** 定期清空队列 防止中间推送消息时中断造成消息丢失 */
@Scheduled(fixedRate = 5L * 60 * 1000)
public void sync() {
Map<Long, Queue<DeferredResult<Object>>> oldMap = userIdToDeferredResultMap;
userIdToDeferredResultMap = new ConcurrentHashMap<Long, Queue<DeferredResult<Object>>>();
for (Queue<DeferredResult<Object>> queue : oldMap.values()) {
if (queue == null) {
continue;
}
for (DeferredResult<Object> deferredResult : queue) {
try {
deferredResult.setResult("");
} catch (Exception e) {
queue.remove(deferredResult);
}
}
}
}
@Override
public void run() {
long requests = concurrentRequests.getAndDecrement();
if (deferredResult.isSetOrExpired()) {
logger.warn(
"{}: Processing of non-blocking request #{} already expired", requests, requestId);
} else {
logger.info("Retrieving result");
NetworkServiceInstantiateReply reply = ServiceSelectionMsgTable.getInstance().get(requestId);
if (reply != null) {
logger.info("Retrieving reply from orchestrator with ns id {}", requestId);
}
boolean deferredStatus = deferredResult.setResult(reply);
logger.debug(
"{}: Processing of non-blocking request #{} done, deferredStatus = {}",
requests,
requestId,
deferredStatus);
}
}
