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1
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var ping = require('ping'); |
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2
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var si = require('systeminformation'); |
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3
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4
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var args = require('./args.js'); |
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5
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var log = require('./logger.js').get(); |
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6
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var file = require('./file.js'); |
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7
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8
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var last_read = null; |
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9
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var cached_machines = []; |
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10
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11
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var localize = function(host) { |
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12
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return host.replace(/\d+\.\d+\.\d+\.\d+/, '0.0.0.0'); |
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13
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}; |
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14
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15
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var readfile = function(filename, hostname) { |
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16
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return new Promise(function(resolve) { |
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17
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file.get(args.folder + filename, function(err, data) { |
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18
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log.debug('file:' + args.folder); |
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19
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log.debug('filename:' + filename); |
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20
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21
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var obj = {'filename': filename}; |
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22
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data = JSON.parse(data); |
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23
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obj[data.load] = data; |
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24
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if (obj[data.load].host && obj[data.load].host.startsWith(hostname)) { |
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25
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obj[data.load].host = localize(obj[data.load].host); |
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26
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} |
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27
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resolve(obj); |
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28
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}); |
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29
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}); |
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30
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}; |
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31
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32
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var get_all = function(IP) { |
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33
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return new Promise(function(resolve) { |
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34
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if (last_read && Date.now() < last_read + args.cache_interval) { |
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35
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return resolve(cached_machines); |
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36
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} |
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37
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38
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return file.list(args.folder, function(err, files) { |
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39
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if (err) { |
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40
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log.error(err); |
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41
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return resolve({}); |
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42
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} |
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43
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44
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var promises = []; |
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45
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var hostname = IP.split(':')[0]; |
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46
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for (var i = 0; i < files.length; ++i) { |
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47
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promises.push(readfile(files[i], hostname)); |
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48
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} |
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49
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50
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return Promise.all(promises).then(function(objects) { |
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51
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var ret = {}; |
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52
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for (var i = 0; i < objects.length; ++i) { |
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53
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ret = Object.assign(ret, objects[i]); |
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54
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} |
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55
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56
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last_read = Date.now(); |
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57
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cached_machines = ret; |
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58
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return resolve(ret); |
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59
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}); |
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60
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}); |
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61
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}); |
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62
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}; |
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63
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64
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var get_valid_host = function(ips, IP) { |
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65
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return new Promise(function(resolve) { |
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66
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if (!ips || !ips.length) { |
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67
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return resolve(localize(IP)); |
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68
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} |
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69
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70
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var ip = ips.pop(); |
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71
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72
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return ping.sys.probe(ip.host.replace(/(^https?:\/\/)|(:\d+$)/g, ''), function(is_alive){ |
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73
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if (is_alive) { |
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74
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return resolve(ip.host); |
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75
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} |
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76
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file.del(args.folder + ip.filename, function(err) { |
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77
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if (err) { |
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78
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log.error('Probably someone else just removed it:' + err); |
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79
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} |
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80
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}); |
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81
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82
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return get_valid_host(ips, IP).then(resolve); |
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83
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}); |
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84
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}); |
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85
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}; |
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86
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87
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88
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module.exports = { |
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89
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'all': get_all, |
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90
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'next': function (IP) { |
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91
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return new Promise(function(resolve) { |
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92
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return get_all(IP).then(function(ips) { |
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93
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return get_valid_host(Object.keys(ips).sort().reduce(function(m, k) { |
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94
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m[k] = ips[k]; |
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95
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return m; |
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96
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}, {}), IP).then(resolve); |
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97
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}); |
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98
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}); |
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99
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}, |
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100
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'cpu': function(IP) { |
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101
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return si.mem(function(mem_data) { |
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102
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return si.currentLoad(function(cpu_data) { |
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103
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// (used_cpu / total_cpu) * (used_mem / total_mem) = load |
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104
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var load = cpu_data.currentload / 100 * mem_data.used / mem_data.total; |
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105
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return file.set(args.folder + 'ds-' + IP.replace(/[^0-9]/g, '') + '.json', JSON.stringify({ |
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106
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'host': IP, |
|
107
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'load': load |
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108
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}), log.debug); |
|
109
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}); |
|
110
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}); |
|
111
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} |
|
112
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}; |
freaker2k7 /
dockerserver
