Examples of com.odiago.flumebase.server.UserSession

com.odiago.flumebase.server.UserSession
State about a user's session, including the callback RPC connection, etc.

  @Override
  public FlowId addFlow(FlowSpecification spec) throws InterruptedException {
    if (null != spec) {
      // Turn the specification into a physical plan and run it.
      FlowId flowId = new FlowId(mNextFlowId++);
      UserSession userSession = getSessionForConf(spec.getConf());
      LocalFlowBuilder flowBuilder = new LocalFlowBuilder(flowId, mRootSymbolTable,
          mFlumeConfig, mMemoryOutputMap, userSession);
      try {
        spec.reverseBfs(flowBuilder);
      } catch (DAGOperatorException doe) {
        // An exception occurred when creating the physical plan.
        // LocalFlowBuilder put a message for the user in here; print it
        // without a stack trace. The flow cannot be executed.
        userSession.sendErr(doe.getMessage());
        return null;
      }
      LocalFlow localFlow = flowBuilder.getLocalFlow();
      localFlow.setQuery(spec.getQuery());
      localFlow.setConf(spec.getConf());

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      if (flowConf.getBoolean(AUTO_WATCH_FLOW_KEY, DEFAULT_AUTO_WATCH_FLOW)) {
        // Subscribe to this flow before running it, so we guarantee the user
        // sees all the results.
        long idNum = flowConf.getLong(SUBMITTER_SESSION_ID_KEY, -1);
        SessionId submitterSessionId = new SessionId(idNum);
        UserSession session = getSession(submitterSessionId);
        if (session != null) {
          activeFlowData.addSession(session);
        } else {
          LOG.warn("Invalid session id number: " + idNum);
        }

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    /**
     * Sign up the specified session to watch a given flow.
     */
    private void watch(WatchRequest watchReq) {
      UserSession userSession = getSession(watchReq.mSessionId);
      if (null == userSession) {
        LOG.warn("Cannot watch flow from user session " + watchReq.mSessionId
            + "; no such session");
        return;
      }

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     * The flowList is provided by a client in another thread; synchronize
     * on it and notify the other thread when the request is complete.
     */
    private void getWatchList(SessionId sessionId, List<FlowId> flowList) {
      synchronized(flowList) {
        UserSession session = getSession(sessionId);
        if (null != session) {
          for (ActiveFlowData activeFlow : mActiveFlows.values()) {
            List<UserSession> subscribers = activeFlow.getSubscribers();
            if (subscribers.contains(session)) {
              flowList.add(activeFlow.getFlowId());

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Related Classes of com.odiago.flumebase.server.UserSession

com.odiago.flumebase.exec.local.LocalEnvironment

com.odiago.flumebase.exec.local.LocalEnvironment$LocalEnvThread

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