pman 0.7

(Python) Process Manager

1. Overview

‘pman’ is a process management system that launches and tracks the status of jobs. In the most general sense, jobs are simply applications run on an underlying system shell.

2. Installation

apt install python-zmq python-webob
pip install pman
# optional
pip install httpie

3. Usage

Scripts

# start 'pman', listening on port 5010 of the current host
pman --raw 1 --http  --port 5010 --listeners 12

Modules

# in yourscript.py
import pman

pman.pman(
  debugFile = '/tmp/debug.file'
  )

4. More

pman.py --raw 1 --http  --port 5010 --listeners 12

Now, assuming the IP of the host as below, a job can be submitted to ‘pman’ using a REST type interface

http POST http://10.17.24.163:5010/api/v1/cmd/ \
Content-Type:application/json Accept:application/json \
payload:='
  {
  "exec": {"cmd": "cal 7 1970"},
  "action":"run",
  "meta": {
      "jid": "123-456-1",
      "auid": "rudolphpienaar"
    }
  }'

‘pman’ will then spawn the process and provide information on the status of the job. Note the <tt>payload</tt> JSON dictionary that provides some additional behaviour options (see later).

Jobs launched by ‘pman.py’ can be queried with

http GET http://10.17.24.163:5010/api/v1/_01/endInfo \
  Content-Type:application/json Accept:application/json

for the pid and status of job “1”, for example