natshook

Subscribe for NATS server and run scripts whenever the specific subject is triggered.

Usage

Usage:
  natshook [OPTIONS]

Application Options:
  -a, --addr=      Address to listen on (default: :4222)
  -f, --file=      Path to the toml file containing hooks definition
      --pid=       Create PID file at the given path
      --creds=     User Credentials File
      --nkey=      NKey Seed File
      --tlscert=   TLS client certificate file
      --tlskey=    Private key file for client certificate
      --tlscacert= CA certificate to verify peer against

Help Options:
  -h, --help       Show this help message

Define some hooks you want to serve in hooks.toml.

[[hooks]]
subject = 'sample'
command = '/path/to/script.sh'

Run natshook as below:

$ natshook --file hooks.toml
2022/08/01 21:00:00 Subscribe subject 'sample'

Then you can execute the script by publish a message to NATS server:

$ cat input.json | nats request sample

Requested payload will be passed to the script as stdin. The output result will be displayed.