pup

Process manager for Deno

Work in progress!

Features

• Keep your processes alive
• Define one or multiple processes in a configuration file pup.json
• Start instantly, or according to a cron-pattern
• Restart according to a cron pattern
• Restart autmatically if a process exits
• Single stdout logging multiple processes

Example

A basic example setup is available in /examples/basic

Running the example

Change working dir to the example directory containg a couple of scripts and pup.json

cd /examples/basic

Start pup

deno run -A ../../pup-cli.ts

test.js will start instantly, and will restart automatically 10 seconds after exiting. test2.js will start every fifth second according to cron pattern */5 * * * * *

Output

PS \pup\examples\basic> deno run -A ../../pup-cli.ts

Creating cron task */5 * * * * *
Starting Kept-alive task subprocess by autostart
Kept alive task - Hello!
Subprocess Kept-alive task exited with code 0
Subprocess Kept-alive task will restart in 10000 ms
Creating Periodic example task subprocess by cron
Cron task - Hello!
Cron task - My working dir is  \pup\examples\basic
Subprocess Periodic example task finished with code 0
Creating Periodic example task subprocess by cron
Cron task - Hello!
Cron task - My working dir is  \pup\examples\basic
Starting Kept-alive task subprocess by autostart
Subprocess Periodic example task finished with code 0
Kept alive task - Hello!
Subprocess Kept-alive task exited with code 0      
Subprocess Kept-alive task will restart in 10000 ms

Example configuration

[
    {
        "name": "Periodic example task",
        "cmd": ["deno","run","--allow-read","./task2.js"],
        "startPattern": "*/5 * * * * *"
    },
    {
        "name": "Kept-alive task",
        "cmd": ["deno","run","--allow-read","./task1.js"],
        "autostart": true,
        "restart": "always",
        "restartDelayMs": 10000
    }
]