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index.js
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index.js
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var resource = require('resource'),
node = resource.define('node');
node.schema.description = "for managing nodes";
node.persist('memory');
node.property("port", {
"type": "number",
"default": 7777,
"description": "the port of the node"
});
node.property("host", {
"type": "string",
"default": "0.0.0.0",
"description": "the host of the node"
});
node.property("name", {
"type": "string",
"description": "the name of the node"
});
node.property('events', {
"description": "the total amount of events processed by this node",
"type": "number"
});
node.property('username', {
"description": "the username used to log into the node",
"type": "string",
"default": "root",
"required": false
});
node.property('role', {
"description": "the role of the node",
"type": "string",
"enum": ["server", "client"],
"default": "client"
});
node.property('status', {
"description": "the status of the node",
"type": "string",
"enum": ["connected", "disconnected"],
"default": "disconnected"
});
node.property('password', {
"description": "the password used to log into the node",
"type": "string",
"required": false
});
node.property('system', {
"description": "a dump of the node's system information ( from node.process and require('os') module )",
"type": "any"
});
node.property('lastSeen', {
"description": "the last date/time the node was seen",
"type": "string"
});
node.method('sh', sh, {
"description": "execute shell scripts on a node via SSH",
"properties": {
"options": {
"type": "object",
"properties": {
"host": {
"type": "string",
"default": "0.0.0.0"
},
"recipe": {
"description": "name to the shell script to run remotely",
"type": "string",
"default": "ls-test" // TODO: ability to load by name, not just path
}
}
},
"callback": {
"type": "function"
}
}
});
//
// Before any nodes are created...
// If they do not have a name, create a new name based on the host port tuple
//
node.before('create', function(data, next){
if(typeof data.name === 'undefined') {
data.name = data.host + "-" + data.port;
}
next(null, data);
})
var spawn = require('child_process').spawn,
fs = require('fs'),
sys = require('sys');
function sh (options, callback) {
options.username = "root";
//
// Read in shell script recipe file
//
fs.readFile(__dirname + '/recipes/' + options.recipe, function (err, data) {
if (err) {
return callback(err);
}
var loggedIn = false,
lines,
commands = [],
ssh;
//
// Turn recipe commands into new line delimited array
//
lines = data.toString().split('\n');
//
// Remove any line that is empty or starts with a comment
//
lines.forEach(function(line){
if(line.substr(0, 1) !== '#' && line.length > 0) {
commands.push(line);
}
});
//
// Join the commands back into bash commands using && to concat each command
// This creates a long string of bash commands connected by &&,
// which are executed sequentially
//
commands = commands.join(' && ');
resource.logger.warn('attempting outgoing ssh connection to ' + options.host);
//
// TODO: make header and footer proper ascii box ( with correct table chars )
//
console.log('----------------------------------\n');
console.log(' DROPPING INTO SSH\n');
console.log('----------------------------------');
//
// Spawn SSH binary as child process
//
ssh = spawn('ssh', ['-l' + options.username, options.host, commands]);
//
// TODO: make buffering and returning of output optional
//
var output = '';
//
// When the SSH binary exits, execute the callback
//
ssh.on('exit', function (code, signal) {
console.log('----------------------------------\n');
console.log(' EXITING SSH\n');
console.log('----------------------------------');
//
// could also return, stdout: output
//
process.stdin.pause();
callback(null, {
code: code,
signal: signal
});
});
ssh.stderr.on('data', function (err) {
process.stdout.write(err);
output += err.toString();
});
ssh.stdout.on('data', function (out) {
output += out.toString();
process.stdout.write(out);
if (!loggedIn) {
var stdin = process.openStdin();
stdin.on('data', function (chunk) {
ssh.stdin.write(chunk);
});
}
loggedIn = true;
});
});
}
exports.node = node;