No way to catch errors if file do not exists or renamed

[LeoIannacone]

Hi all,

there's no way to catch exception coming from "file not exists" error or "rename" events ?

This test crashes everytime. And I am not able to control exceptions.

var Tail = require('tail').Tail
  , exec = require('child_process').exec

exec('echo hello world 0 >> file.txt')

tail = new Tail('file.txt')

tail.on("line", function(data) {
    console.log(data);
});

setTimeout(function() {
  exec('echo hello world 1 >> file.txt')
}, 1000)

setTimeout(function() {
  exec('mv file.txt old.txt')
}, 1500)

setTimeout(function() {
    echo('echo hello world 2 >> file.txt')
}, 3000)

It looks like problem comes from:

    else if e is 'rename'
      @unwatch()
      setTimeout (=> @watch()), 1000

you may need to check if file exists before call @watch ... if it does not exist, call setTimeout and check again.

[lucagrulla]

Currently the library doesn't handle this scenario. Feel free to send a pull request :-)

On a side note: I guess it's note enough to just setTimeout. There's at least the need of a circuit breaker at some stage that will throw an exception and stop the library otherwise you go in an infinite -and probably not particularly useful- loop.

[lucagrulla]

release V1.0.0 is addressing the problem with an extra optional parameter that will disable the tail -F behaviour.