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rsync.js
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rsync.js
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var spawn = require('child_process').spawn;
var exec = require('child_process').exec;
var util = require('util');
var _ = require('lodash');
var util = require('util');
var events = require('events');
var Promise = require('node-promise').Promise;
function escapeSrc(src) {
return '"' + src + '"';
}
function buildargs(options, mandatory) {
options = options || {};
mandatory = mandatory || [];
mandatory.forEach(function(item) {
if (!options[item]) {
throw (new Error('"' + item + '" is missing from options'));
}
});
var args = [];
args.push('--rsh=ssh -i"' + options.keyfile + '" -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no');
args.push('--recursive');
args.push('--timeout=120');
args.push('--copy-links');
if (options.filelist !== true) {
args.push('--partial');
args.push('--progress');
switch (options.compareMode) {
case 'sizeOnly':
args.push('--size-only');
break;
case 'checksum':
args.push('--checksum');
break;
}
}
if (options.args && util.isArray(options.args)) {
args = _.union(args, options.args);
}
args = _.unique(args);
if (options.bwlimit) {
args.push('--bwlimit=' + options.bwlimit);
}
var src = options.username + '@' + options.host + ':' + escapeSrc(options.src);
args.push(src);
if (options.dest) {
args.push(options.dest);
}
console.log(args.join(' '));
return args;
}
var download = module.exports.download = function (options) {
events.EventEmitter.call(this);
var args = buildargs(options, ['username', 'host', 'src', 'dest', 'keyfile']);
var rsync;
try {
rsync = spawn('rsync', args);
var progressregex = /\s*(\d+)\s+(\d+)%\s+(\d*\.*\d+[a-zA-Z]B\/s)\s*(\d+:\d+:\d+)/;
var xferregex = /to-check=(\d+)\/(\d+)\)/;
var self = this;
rsync.stdout.on('data', function (data) {
if (progressregex.test(data)) {
var m = progressregex.exec(data);
self.emit('progress', {
bytes: m[1],
percent: m[2],
rate: m[3],
eta: m[4]
});
}
if (xferregex.test(data)) {
var m = xferregex.exec(data);
self.emit('files', {
left: m[1],
total: m[2]
});
}
});
rsync.stderr.on('data', function (data) {
});
rsync.on('exit', function (code) {
if (code === 0) {
self.emit('finish');
} else {
self.emit('error', code);
}
});
} catch (error) {
this.emit('error', error);
}
this.kill = function() {
if (rsync && rsync.kill) {
console.log('killing rsync');
rsync.kill('SIGINT');
rsync.kill('SIGTERM');
rsync.kill('SIGHUP');
}
};
};
util.inherits(download, events.EventEmitter);
var filelist = module.exports.filelist = function (options) {
events.EventEmitter.call(this);
if (options && options.dest) {
delete options.dest;
}
options.filelist = true;
var args = buildargs(options, ['username', 'host', 'src', 'keyfile']);
var rsync;
try {
rsync = spawn('rsync', args);
var self = this;
var filelistregex = /([d\-])[rwx\-]{9}\s+(\d+)\s+\d{4}\/\d{2}\/\d{2}\s+\d{2}:\d{2}:\d{2}\s(.*)/;
var stdoutdata = '';
rsync.stdout.on('data', function (data) {
stdoutdata += data;
});
rsync.stderr.on('data', function (data) {
data = 'err: ' + data;
});
rsync.on('exit', function (code) {
if (code === 0) {
var filelist = [];
var lines = stdoutdata.split('\n');
lines.forEach(function(line) {
if (filelistregex.test(line)) {
var m = filelistregex.exec(line);
filelist.push({
isDir: m[1] === 'd',
size: m[2],
path: '' + m[3]
});
}
});
self.emit('finish', filelist);
} else {
self.emit('error', code);
}
});
} catch (error) {
this.emit('error', error);
}
this.kill = function() {
console.log('killing rsync');
if (rsync && rsync.kill) {
rsync.kill('SIGINT');
rsync.kill('SIGTERM');
rsync.kill('SIGHUP');
}
};
};
util.inherits(filelist, events.EventEmitter);