Backend Server

A technical walk-through of how the PerformanceGuard backend server works.

Backend Server Telnet Interface

The backend service exposes a Telnet interface. By default the Telnet server runs on port 4005, but the port number may be changed using the telnetPort parameter.
In order to log in to the backend service Telnet interface you need to supply the name and password of the PerformanceGuard administrator. By default this is

• User name: admin
• Password: admin

The following is a snapshot of a Telnet session, with the built-in command overview:

PerformanceGuard Backend Server

login: admin
password: *****

>help

Commands:
  conf                 - Shows server configuration
  exit | quit          - Exits this admin session
  help                 - Shows this message
  history              - Shows history of commands
  jobs [cancel|start]  - Lists/cancels/starts database aggregate jobs
  log [level] [regexp] - Shows server log, where level is INFO,FINE or FINEST
                           (level must be at least what is in logging.properties)
  refresh              - Refreshes configuration/filters
  select ...           - Executes database request
  shutdown             - Shuts down the server
  stat [code]          - Shows server statistics
       recv            - Shows receivers
       alarms          - Shows number of alarms
       sent            - Shows number of sent notifications
       fail            - Shows number of failed notifications
       data secs       - Shows data counters
  test                 - Send test notification e-mail to default receiver
  test name            - Send test notification e-mail to named receiver
  status               - Shows database & time status
  version              - Shows server version
  dump [variable]      - Dump internal data
        cache          - Dump internal cache
        server         - Dump server
        connections    - Dump ConnectionPool and the corresponding thread information
  ![number]            - Re-executes the command 'number'
  ee                   - List the Id and filter running in the eventengine.
        list           - List the running filters in the event engine and their id number.
        list [number]  - Dump the state of a specific filter/container with the 'number'
        count          - list the number of events sendt around in the event engine.
        pool           - list the thread pool data.
        dispatch       - list the event receivers subscribing to event types from the dispatcher.
        tick           - list the number of event send from the TimeTickDispatcher and the latest send time.
        info           - list the event statistic from on the event dispatcher.
        info [num]     - list the count of the different events going through event dispatcher.
        dump [number]  - Dump the state of a specific filter/container with the 'number'
        path [number   - Output the information path to a given event receiver/container with the 'number'
        notify [number]- Triggers a event container to send a event notification.
        conf [number]  - Output the configuration of the elements of the event path.
        test           - List the test available to run on the event engine.
        test [number]  - Run the test.
        clean [number] - Removes the stored data in a filter/container.
        diff timestamp - Calculates difference to currenttime.
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