pingpong

Ping Pong Task Managing

Description

In generally, most of server processes are running forever. But in some use cases, you may want to terminate server process when you don't need. This utilities are separeted pping and ppong. pping order to start process on server, and runs your command with ping to server. If ppong received ping, start server process and watching thems. If ping is not received while few seconds, ppong terminate the process.

Usage

Start ppong

$ cat webcam.json
{
	"name": "ffserver",
	"args": ["-f", "webcam.conf"],
	"timeout": 30
}

$ ppong

Start ffmpeg command with ping

$ pping -n webcam ffmpeg -f vfwcap -r 25 http://127.0.0.1:8081/feed1.ffm

Then ppong start ffserver. While running ffmpeg, pping send pings, If ffmpeg is terminated, pping will exit. After some seconds, ppong stop the ffserver.

Configuration

• name: path to command
• args: arguments for the command
• timeout: specify timeout senconds. if omitted, 60 seconds.

Options

pping

• -n: name of task. ppong read name.json on current director.json` on current directory.
• -p: interval seconds to ping.

ppong

• -i: interval seconds to check process alives.
• -s: server address.
• -t: default timeout value.

Installation

pping on client

go get github.com/mattn/pingpong/pping

ppong on server

go get github.com/mattn/pingpong/ppong

License

MIT

Author

Yasuhiro Matsumoto (a.k.a mattn)