0.1.3 • Published 11 years ago
ambassador v0.1.3
Ambassador
Ambassador provides a way to communicate between node.js processes.
Installation
npm install ambassador --save
Usage
First of all, ambassador
is an EventEmitter
.
Example
Process A (pid: 14100)
// Listen to signal 'watch'
require('ambassador').on('watch', function(pid, data){
console.log('Signal "watch" from process[', pid, '] with data', data);
});
// So that process A will hang on.
require('http').createServer(function(){}).listen(9876);
Process B (pid: 14102)
// Send data to process 14100 (A)
require('ambassador').send(14100, 'watch', {
abc: 1
});
Then, process A will print:
Signal "watch" from process[ 14102 ] with data {abc: 1}
Methods
ambassador.send(pid, signal, data);
Send a signal
signal to the process pid
with data data
Returns ambassador
pid Number
The pid of the target process
signal String
Signal name
data mixed
The data to be sent
ambassador.on(signal, callback)
Returns ambassador
signal String
callback function(pid, data)
The callback function
pid Number
The pid number from which process the signal has been sent.
data mixed
The received data
ambassador.kill(pid)
If the target process contains ambassador
, this method will safely kill that process.