node-daemontools
Control daemontools (svc
, svstat
) with Node
Installation
npm install daemontools
Example
var daemontools = require('daemontools');
daemontools.svstat('/service/nginx', function(err, stats) {
if (err)
throw err;
console.dir(stats);
});
daemontools.restart('/service/apache', function(err) {
if (err)
throw err;
});
This example will show the current status of the nginx
daemon, as well as
restart the apache
service.
Usage
daemontools.svstat(file, cb)
A function that mimics svstat(1)
by reading a daemons status
file and extracting meaningful data.
file
- a service filecb
- a function in the form of function(err, stats)
example:
daemontools.svstat('/service/nginx', function(err, stats) {
console.dir(stats);
})
output
{
"name": "nginx",
"path": "/service/nginx",
"pid": 3985,
"up": true,
"paused": false,
"want": "up",
"changed": "2014-07-26T06:09:42.000Z",
"elapsed": 5
}
daemontools.svc(file, data, cb)
mimics svc(1)
by writing to a daemons control
file
file
- a service filedata
- a string to pass to the control
file, like d
for down, u
for up, etc.cb
- a function in the form of function(err)
(passed to fs.appendFile
)
example:
daemontools.svc('/service/nginx', 'dx', function(err) {
})
convenience functions
The following functions have been defined to call daemontools.svc
with predefined
arguments for convenience.
All functions take a file as the first argument and a callback as the second. The names
were modeled after the arguments supported by the svc(1)
program - http://cr.yp.to/daemontools/svc.html.
daemontools.up(file, cb)
daemontools.down(file, cb)
daemontools.once(file, cb)
daemontools.term(file, cb)
daemontools.kill(file, cb)
daemontools.exit(file, cb)
daemontools.pause(file, cb)
daemontools.cont(file, cb)
daemontools.hup(file, cb)
daemontools.int(file, cb)
daemontools.alarm(file, cb)
And the following aliases have been defined
daemontools.start(file, cb)
- same as up
daemontools.stop(file, cb)
- same as down
daemontools.restart(file, cb)
- same as term
License
LICENSE - "MIT License"
Copyright (c) 2013-2014 Voxer LLC. All rights reserved.
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
of the Software, and to permit persons to whom the Software is furnished to do
so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.