Simple daemon that listens for and runs commands

Example commands:

pip uninstall GitPython -y pip install GitPython==0.3.2.RC1

python c:\ie\ark\Install\setup.py -quiet

cp "C:\ie\ark\bin\HardUpdate.lnk" "C:\Users%USERNAME%\Desktop\HardUpdate.lnk"

workstation,ec2 pip uninstall GitPython -y ec2,workstation pip install GitPython==0.3.2.RC1

rendernode,ec2 DONTEXECUTEORERROR

workstation,renderndoe python c:\ie\ark\Install\toolsSetup.py -quiet

workstation cp "C:\ie\daemon\testFile" "C:\Users%USERNAME%\Desktop\HardUpdate.lnk"

Handles command queue for Sheep

Implementation

• problem is backlog of commands when systems become unsync'd
  • only ever maybe 20 commands as they're overwritten (script-enforced unique names)
  • new node comes online, sheep has no script date
  • gets all scripts cuz no script date
  • runs each script
  • only after running all scripts is script date updated
  • if it fails while running a script and crashes out it will start over from the top
    • pretty edgy and not the end of the world, scripts should all run
    • scripts should have a fails number that gets incremented
• want commands that are always run
• want conditionals on commands
  • commands are python scripts, python scripts handle conditionals
• want to be able to run commands in sequence
  • commands have priority, run highest to lowest
• need to be able to run commands on both windows, mac, and linux
  • commands are always python scripts, python handles platform specific execution
• need a way to issue common commands
  • ex: restart sheep, update git
  • just "refresh" existing commands
• want only one restart command or one update command to be active
  • commands should overwrite commands of the same name
  • ex: "restart sheep" clears out other "restart sheep" commands before adding
• want frequent command list
  • commands can be "refreshed"
  • hack: disable / enable them to change updated date
• want command status
  • special field: command status
    • get all sheep
    • get get script date
    • count ones that haven't run yet, display as %
• example add command
  • name: restart sheep
  • command: python code or script ex: shepherd/restartSheep.py paths are relative to tools root
  • enabled
  • priority: order in which commands will be run, highest first