Example #1
0
  void handleJoinRequest(JoinRequest joinRequest) {
    final long now = Clock.currentTimeMillis();
    String msg =
        "Handling join from "
            + joinRequest.address
            + ", inProgress: "
            + joinInProgress
            + (timeToStartJoin > 0 ? ", timeToStart: " + (timeToStartJoin - now) : "");
    logger.log(Level.FINEST, msg);
    boolean validJoinRequest;
    try {
      validJoinRequest = node.validateJoinRequest(joinRequest);
    } catch (Exception e) {
      validJoinRequest = false;
    }
    final Connection conn = joinRequest.getConnection();
    if (validJoinRequest) {
      final MemberImpl member = getMember(joinRequest.address);
      if (member != null) {
        if (joinRequest.getUuid().equals(member.getUuid())) {
          String message = "Ignoring join request, member already exists.. => " + joinRequest;
          logger.log(Level.FINEST, message);

          // send members update back to node trying to join again...
          final long clusterTime = node.getClusterImpl().getClusterTime();
          sendProcessableTo(new MembersUpdateCall(lsMembers, clusterTime), conn);
          sendProcessableTo(new SyncProcess(), conn);
          return;
        }
        // If this node is master then remove old member and process join request.
        // If requesting address is equal to master node's address, that means master node
        // somehow disconnected and wants to join back.
        // So drop old member and process join request if this node becomes master.
        if (isMaster() || member.getAddress().equals(getMasterAddress())) {
          logger.log(
              Level.WARNING,
              "New join request has been received from an existing endpoint! => "
                  + member
                  + " Removing old member and processing join request...");
          // If existing connection of endpoint is different from current connection
          // destroy it, otherwise keep it.
          //                    final Connection existingConnection =
          // node.connectionManager.getConnection(joinRequest.address);
          //                    final boolean destroyExistingConnection = existingConnection !=
          // conn;
          doRemoveAddress(member.getAddress(), false);
        }
      }
      if (!node.getConfig().getNetworkConfig().getJoin().getMulticastConfig().isEnabled()) {
        if (node.isActive() && node.joined() && node.getMasterAddress() != null && !isMaster()) {
          sendProcessableTo(new Master(node.getMasterAddress()), conn);
        }
      }
      if (isMaster() && node.joined() && node.isActive()) {
        final MemberInfo newMemberInfo =
            new MemberInfo(joinRequest.address, joinRequest.nodeType, joinRequest.getUuid());
        if (node.securityContext != null && !setJoins.contains(newMemberInfo)) {
          final ILogger securityLogger = node.loggingService.getLogger("com.hazelcast.security");
          final Credentials cr = joinRequest.getCredentials();
          if (cr == null) {
            securityLogger.log(
                Level.SEVERE,
                "Expecting security credentials "
                    + "but credentials could not be found in JoinRequest!");
            sendAuthFail(conn);
            return;
          } else {
            try {
              LoginContext lc = node.securityContext.createMemberLoginContext(cr);
              lc.login();
            } catch (LoginException e) {
              securityLogger.log(
                  Level.SEVERE,
                  "Authentication has failed for "
                      + cr.getPrincipal()
                      + '@'
                      + cr.getEndpoint()
                      + " => ("
                      + e.getMessage()
                      + ")");
              securityLogger.log(Level.FINEST, e.getMessage(), e);
              sendAuthFail(conn);
              return;
            }
          }
        }
        if (joinRequest.to != null && !joinRequest.to.equals(thisAddress)) {
          sendProcessableTo(new Master(node.getMasterAddress()), conn);
          return;
        }
        if (!joinInProgress) {
          if (firstJoinRequest != 0
              && now - firstJoinRequest >= MAX_WAIT_SECONDS_BEFORE_JOIN * 1000) {
            startJoin();
          } else {
            if (setJoins.add(newMemberInfo)) {
              sendProcessableTo(new Master(node.getMasterAddress()), conn);
              if (firstJoinRequest == 0) {
                firstJoinRequest = now;
              }
              if (now - firstJoinRequest < MAX_WAIT_SECONDS_BEFORE_JOIN * 1000) {
                timeToStartJoin = now + WAIT_MILLIS_BEFORE_JOIN;
              }
            }
            if (now > timeToStartJoin) {
              startJoin();
            }
          }
        }
      }
    } else {
      conn.close();
    }
  }