Package org.serviceconnector.cmd

Examples of org.serviceconnector.cmd.SCMPCommandException

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      break;
    }

    FileService fileService = this.validateFileService(message.getServiceName());
    if (fileService.isEnabled() == false) {
      SCMPCommandException scmpCommandException = new SCMPCommandException(SCMPError.SERVICE_DISABLED, "service="
          + fileService.getName() + " is disabled");
      scmpCommandException.setMessageType(getKey());
      throw scmpCommandException;
    }
    SCMPMessage reply = null;
    try {
      FileServer fileServer = fileService.getServer();
      reply = fileServer.serverGetFileList(fileService.getPath(), fileService.getGetFileListScriptName(),
          message, oti);
    } catch (Exception e) {
      SCMPCommandException scmpCommandException = new SCMPCommandException(SCMPError.GET_FILE_LIST_FAILED,
          "Error occured in get file list on SC.");
      scmpCommandException.setMessageType(getKey());
      throw scmpCommandException;
    }
    reply.setIsReply(true);
    reply.setMessageType(getKey());
    response.setSCMP(reply);
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    SCMPMessage reqMessage = request.getMessage();
    String serviceName = reqMessage.getServiceName();
    // check service is present and enabled
    Service abstractService = this.getService(serviceName);
    if (abstractService.isEnabled() == false) {
      SCMPCommandException scmpCommandException = new SCMPCommandException(SCMPError.SERVICE_DISABLED, "service="
          + abstractService.getName() + " is disabled");
      scmpCommandException.setMessageType(getKey());
      throw scmpCommandException;
    }
    // enhance ipAddressList
    String ipAddressList = reqMessage.getHeader(SCMPHeaderAttributeKey.IP_ADDRESS_LIST);
    ipAddressList = ipAddressList + Constants.SLASH + request.getRemoteSocketAddress().getAddress().getHostAddress();
    reqMessage.setHeader(SCMPHeaderAttributeKey.IP_ADDRESS_LIST, ipAddressList);
    String sessionInfo = reqMessage.getHeader(SCMPHeaderAttributeKey.SESSION_INFO);
    int eciInSeconds = reqMessage.getHeaderInt(SCMPHeaderAttributeKey.ECHO_INTERVAL);
    int eciInMillis = eciInSeconds * Constants.SEC_TO_MILLISEC_FACTOR;
    int oti = reqMessage.getHeaderInt(SCMPHeaderAttributeKey.OPERATION_TIMEOUT);

    switch (abstractService.getType()) {
    case CASCADED_SESSION_SERVICE:
      CascadedSC cascadedSC = ((CascadedSessionService) abstractService).getCascadedSC();
      CommandCascCallback callback = new CommandCascCallback(request, response, responderCallback);
      cascadedSC.createSession(reqMessage, callback, oti);
      return;
    case CASCADED_FILE_SERVICE:
      cascadedSC = ((CascadedFileService) abstractService).getCascadedSC();
      callback = new CommandCascCallback(request, response, responderCallback);
      cascadedSC.createSession(reqMessage, callback, oti);
      return;
    case SESSION_SERVICE:
      // code for type session service is below switch statement
      break;
    case FILE_SERVICE:
      FileService fileService = (FileService) abstractService;
      // create file session
      FileSession fileSession = new FileSession(sessionInfo, ipAddressList, fileService.getPath(),
          fileService.getUploadFileScriptName(), fileService.getGetFileListScriptName());
      fileSession.setService(fileService);
      FileServer fileServer = fileService.allocateFileServerAndCreateSession(fileSession);
      // add server to session
      fileSession.setServer(fileServer);
      fileSession.setSessionTimeoutMillis(eciInMillis * basicConf.getEchoIntervalMultiplier());
      // finally add file session to the registry
      this.sessionRegistry.addSession(fileSession.getId(), fileSession);
      // reply to client - SCMP Version request
      SCMPMessage reply = new SCMPMessage(reqMessage.getSCMPVersion());
      reply.setIsReply(true);
      reply.setMessageType(getKey());
      reply.setSessionId(fileSession.getId());
      response.setSCMP(reply);
      responderCallback.responseCallback(request, response);
      return;
    default:
      // code for other types of services is below
      break;
    }

    // create session
    Session session = new Session(sessionInfo, ipAddressList);
    session.setService(abstractService);
    session.setSessionTimeoutMillis(eciInMillis * basicConf.getEchoIntervalMultiplier());
    reqMessage.setSessionId(session.getId());
    // no need to forward echo attributes
    reqMessage.removeHeader(SCMPHeaderAttributeKey.ECHO_INTERVAL);

    // tries allocating a server for this session
    CreateSessionCommandCallback callback = null;

    int otiOnSCMillis = (int) (oti * basicConf.getOperationTimeoutMultiplier());
    int tries = (otiOnSCMillis / Constants.WAIT_FOR_FREE_CONNECTION_INTERVAL_MILLIS);
    // Following loop implements the wait mechanism in case of a busy connection pool
    int i = 0;
    do {
      // reset ipList&msgType, might have been modified in below create session try
      reqMessage.setHeader(SCMPHeaderAttributeKey.IP_ADDRESS_LIST, ipAddressList);
      reqMessage.setMessageType(this.getKey());
      callback = new CreateSessionCommandCallback(request, response, responderCallback, session);
      try {
        ((SessionService) abstractService).allocateServerAndCreateSession(reqMessage, callback, session, otiOnSCMillis
            - (i * Constants.WAIT_FOR_FREE_CONNECTION_INTERVAL_MILLIS));
        // no exception has been thrown - get out of wait loop
        break;
      } catch (NoFreeServerException ex) {
        LOGGER.debug("NoFreeServerException caught in wait mec of csc create session, tries left=" + tries);
        if (i >= (tries - 1)) {
          // only one loop outstanding - don't continue throw current exception
          throw ex;
        }
      } catch (ConnectionPoolBusyException ex) {
        LOGGER.debug("ConnectionPoolBusyException caught in wait mec of csc create session, tries left=" + tries);
        if (i >= (tries - 1)) {
          // only one loop outstanding - don't continue throw current exception
          LOGGER.warn(SCMPError.NO_FREE_CONNECTION.getErrorText("service=" + reqMessage.getServiceName()));
          SCMPCommandException scmpCommandException = new SCMPCommandException(SCMPError.NO_FREE_CONNECTION, "service="
              + reqMessage.getServiceName());
          scmpCommandException.setMessageType(this.getKey());
          throw scmpCommandException;
        }
      }
      // sleep for a while and then try again
      Thread.sleep(Constants.WAIT_FOR_FREE_CONNECTION_INTERVAL_MILLIS);
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   */
  private Server getServerByKeyAndValidateNotRegistered(String key) throws SCMPCommandException {
    Server server = this.serverRegistry.getServer(key);
    if (server != null) {
      // server registered two times for this service
      SCMPCommandException cmdExc = new SCMPCommandException(SCMPError.SERVER_ALREADY_REGISTERED, "server=" + key);
      cmdExc.setMessageType(getKey());
      throw cmdExc;
    }
    return server;
  }
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    try {
      String remoteFileName = message.getHeader(SCMPHeaderAttributeKey.REMOTE_FILE_NAME);
      FileServer fileServer = session.getFileServer();
      reply = fileServer.serverUploadFile(session, message, remoteFileName, oti);
    } catch (Exception e) {
      SCMPCommandException scmpCommandException = new SCMPCommandException(SCMPError.FILE_UPLOAD_FAILED,
          "Error occured in file server on SC.");
      scmpCommandException.setMessageType(getKey());
      throw scmpCommandException;
    }
    reply.setIsReply(true);
    reply.setMessageType(getKey());
    response.setSCMP(reply);
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      responderCallback.responseCallback(request, response);
      return;
    case CASCADED_SC:
    case UNDEFINED:
    default:
      throw new SCMPCommandException(SCMPError.SC_ERROR, "delete session not allowed for service "
          + abstractService.getName());
    }
    StatefulServer statefulServer = (StatefulServer) abstractServer;
    DeleteSessionCommandCallback callback;
    // free server from session
    statefulServer.removeSession(session);

    int otiOnSCMillis = (int) (oti * basicConf.getOperationTimeoutMultiplier());
    int tries = (otiOnSCMillis / Constants.WAIT_FOR_FREE_CONNECTION_INTERVAL_MILLIS);
    // Following loop implements the wait mechanism in case of a busy connection pool
    int i = 0;
    do {
      // reset msgType, might have been modified in below delete session try
      reqMessage.setMessageType(this.getKey());
      callback = new DeleteSessionCommandCallback(request, response, responderCallback, session, statefulServer);
      try {
        statefulServer.deleteSession(reqMessage, callback, otiOnSCMillis
            - (i * Constants.WAIT_FOR_FREE_CONNECTION_INTERVAL_MILLIS));
        // no exception has been thrown - get out of wait loop
        break;
      } catch (ConnectionPoolBusyException ex) {
        LOGGER.debug("ConnectionPoolBusyException caught in wait mec of csc delete session, tries left=" + tries);
        if (i >= (tries - 1)) {
          // only one loop outstanding - don't continue throw current exception
          statefulServer.abortSession(session, "deleting session failed, connection pool to server busy");
          LOGGER.debug(SCMPError.NO_FREE_CONNECTION.getErrorText("service=" + reqMessage.getServiceName()));
          SCMPCommandException scmpCommandException = new SCMPCommandException(SCMPError.NO_FREE_CONNECTION, "service="
              + reqMessage.getServiceName());
          scmpCommandException.setMessageType(this.getKey());
          throw scmpCommandException;
        }
      }
      // sleep for a while and then try again
      Thread.sleep(Constants.WAIT_FOR_FREE_CONNECTION_INTERVAL_MILLIS);
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      } catch (ConnectionPoolBusyException ex) {
        LOGGER.debug("ConnectionPoolBusyException caught in wait mec of change subscription, tries left=" + tries);
        if (i >= (tries - 1)) {
          // only one loop outstanding - don't continue throw current exception
          LOGGER.debug(SCMPError.NO_FREE_CONNECTION.getErrorText("service=" + reqMessage.getServiceName()));
          SCMPCommandException scmpCommandException = new SCMPCommandException(SCMPError.NO_FREE_CONNECTION, "service="
              + reqMessage.getServiceName());
          scmpCommandException.setMessageType(this.getKey());
          throw scmpCommandException;
        }
      } // sleep for a while and then try again
      Thread.sleep(Constants.WAIT_FOR_FREE_CONNECTION_INTERVAL_MILLIS);
    } while (++i < tries);
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        LOGGER.debug("ConnectionPoolBusyException caught in wait mec of unsubscribe, tries left=" + tries);
        if (i >= (tries - 1)) {
          // only one loop outstanding - don't continue throw current exception
          server.abortSession(subscription, "unsubscribe subscription failed, connection pool to server busy");
          LOGGER.debug(SCMPError.NO_FREE_CONNECTION.getErrorText("service=" + reqMessage.getServiceName()));
          SCMPCommandException scmpCommandException = new SCMPCommandException(SCMPError.NO_FREE_CONNECTION, "service="
              + reqMessage.getServiceName());
          scmpCommandException.setMessageType(this.getKey());
          throw scmpCommandException;
        }
      }
      // sleep for a while and then try again
      Thread.sleep(Constants.WAIT_FOR_FREE_CONNECTION_INTERVAL_MILLIS);
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  protected Session getSessionById(String sessionId) throws SCMPCommandException {
    Session session = sessionRegistry.getSession(sessionId);
    if (session == null) {
      // session not found in registry
      LOGGER.info("session not found sid=" + sessionId);
      SCMPCommandException scmpCommandException = new SCMPCommandException(SCMPError.SESSION_NOT_FOUND, sessionId);
      scmpCommandException.setMessageType(getKey());
      throw scmpCommandException;
    }
    return session;
  }
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    Subscription subscription = this.subscriptionRegistry.getSubscription(subscriptionId);

    if (subscription == null) {
      // subscription not found in registry
      LOGGER.info("subscription not found sid=" + subscriptionId);
      SCMPCommandException scmpCommandException = new SCMPCommandException(SCMPError.SUBSCRIPTION_NOT_FOUND, subscriptionId);
      scmpCommandException.setMessageType(getKey());
      throw scmpCommandException;
    }
    return subscription;
  }
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   */
  protected Service getService(String serviceName) throws SCMPCommandException {
    Service service = this.serviceRegistry.getService(serviceName);
    if (service == null) {
      // service not found in registry
      SCMPCommandException scmpCommandException = new SCMPCommandException(SCMPError.SERVICE_NOT_FOUND, serviceName);
      scmpCommandException.setMessageType(getKey());
      throw scmpCommandException;
    }
    return service;
  }
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Related Classes of org.serviceconnector.cmd.SCMPCommandException

  • org.serviceconnector.cache.SCCache
  • org.serviceconnector.cache.SCCacheManager
  • org.serviceconnector.cmd.sc.CheckRegistrationCommand
  • org.serviceconnector.cmd.sc.ClnChangeSubscriptionCommand
  • org.serviceconnector.cmd.sc.ClnCreateSessionCommand
  • org.serviceconnector.cmd.sc.ClnDeleteSessionCommand
  • org.serviceconnector.cmd.sc.ClnExecuteCommand
  • org.serviceconnector.cmd.sc.ClnSubscribeCommand
  • org.serviceconnector.cmd.sc.ClnUnsubscribeCommand
  • org.serviceconnector.cmd.sc.CommandAdapter
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