Custom Startup Scheduler

App reads from a json file containing a list of apps. It then schedules the apps for execution.

Example:

A sample startup json may be:

[
  {
    "name": "LS 0",
    "app_name": "/bin/ls",
    "app_args": ["-l"],
    "run_mode": "script",
    "create_log": true,
    "working_dir": "/home/"
  },
  {
    "name": "LS 1",
    "app_name": "/bin/ls",
    "app_args": ["-l"],
    "run_mode": "script",
    "create_log": true,
    "after": [{"module": "LS 0", "state": "exited"}],
    "env": {"PATH": "/home/:/usr/bin/", "NAME": "ONE"},
    "working_dir": "/home/etc",
    "run_as": "username",
    "run_every": "10s",
    "run_on_start": true
  },
  {
    "name": "LS 2",
    "app_name": "/bin/ls",
    "app_args": ["-lh"],
    "run_mode": "script",
    "create_log": true,
    "after": [{"module": "LS 0", "state": "exited"}],
    "working_dir": "/home/etc/Documents",
    "run_on_start": false,
    "run_at": "1,15,30 01:30:00 Monthly"
  }
]

App Arguments:

• --threads | -t : Specify the number of worker threads [Default is 16].
• --log_dir | -ld: The directory to dump log files into. Stdout and Stderr are redirected to a file in this folder with naming convention of MODULE_NAME.log
• --json | -j: Specify the location of the json file containing the list of modules to run.
• --test | -T: Test the json file for errors.

Json Parameters:

Key	Type	Description
name	String	Identification name of the module. Log files will be saved with this name.
app_name	String	Path to executable of the module.
app_args	List[String]	List of arguments to the executable.
run_mode	String	Value should be "script" or "daemon". "script" modules are waited on to finish. "daemon" modules are forked and forgotten.
create_log	Boolean	Boolean to indicate whether to direct output to file specified by log_dir argument.
after	List[DICT{"module": name, "state": STATE}]	List of modules and their states provided for dependancy management.
working_dir	String	Executable working directory.
run_on_start	Boolean	Used with run_at or run_every to toggle starting the executable when the startup App is first launched.
run_at	String	Used to specify time points at which to run the executable.
run_every	String	Used to specify intervals at which to run the executable.
env	DICT{key: value}	Used to specify additional environmental variables to the executable.