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1
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var args = require('./args.js'); |
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2
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var log = require('./logger.js').get(); |
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3
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4
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var IP = null; |
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5
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var machine = null; |
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6
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var request = null; |
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7
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8
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var get_protocol = function() { |
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9
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return 'http' + (args.https && 's' || '') + '://'; |
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10
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}; |
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11
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12
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var get_req = function(req, host) { |
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13
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return new Promise(function(resolve) { |
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14
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return request({ |
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15
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method: req.method, |
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16
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url: host + req.originalUrl, |
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17
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headers: { |
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18
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'docker-server': 'force', |
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19
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'content-type': 'application/json', |
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20
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'authorization': req.get('Authorization') |
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21
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}, |
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22
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body: req.method !== 'HEAD' && req.body && JSON.stringify(req.body) || undefined |
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23
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}, function (err, res, body) { |
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24
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log.debug('request:' + host + '::' + err + ' (' + (typeof body) + ') ' + JSON.stringify(body)); |
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25
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if (err) { |
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26
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log.error('err:' + host + '::' + err); |
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27
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return resolve({'body': [err], 'host': host}); |
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28
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} |
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29
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30
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try { |
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31
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return resolve({'body': typeof body === 'string' && JSON.parse(body) || body, 'host': host}); |
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32
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} catch(e) { |
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33
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if (body.startsWith('error')) { |
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34
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body = {'error': body}; |
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35
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} else { |
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36
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log.error('request:' + host + '::' + err + ' (' + (typeof body) + ') ' + JSON.stringify(body)); |
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37
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} |
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38
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39
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return resolve({'body': [body], 'host': host}); |
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40
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} |
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41
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}); |
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42
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}); |
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43
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}; |
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44
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45
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var handle_cluster_request = function(req, res, next) { |
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46
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return function(ip) { |
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47
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if (ip === IP) { |
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48
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next(); |
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49
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} else { |
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50
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get_req(req, ip).then(function(ip_obj) { |
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51
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res.send(ip_obj.body || null); |
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52
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}); |
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53
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} |
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54
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}; |
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55
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}; |
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56
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57
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var handle_cluster = function(req, res, next) { |
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58
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if (req.method === 'PUT') { |
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59
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machine.next(IP).then(handle_cluster_request(req, res, next)); |
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60
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} else if (~['GET', 'DELETE', 'HEAD', 'POST'].indexOf(req.method)) { |
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61
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machine.all(IP).then(function(ips) { |
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62
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var promises = []; |
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63
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for (var i in ips) { |
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64
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if (ips.hasOwnProperty(i)) { |
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65
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promises.push(get_req(req, ips[i].host)); |
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66
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} |
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67
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} |
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68
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69
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return Promise.all(promises).then(function(responses) { |
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70
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var response = []; |
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71
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for (var i = 0; i < responses.length; ++i) { |
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72
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// Add the host to each result for more clearance for the client. |
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73
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if (responses[i].body.length) { |
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74
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for (var j in responses[i].body) { |
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75
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if (responses[i].body.hasOwnProperty(j)) { |
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76
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responses[i].body.host = responses[i].host; |
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77
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} |
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78
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} |
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79
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} else { |
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80
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responses[i].body.host = responses[i].host; |
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81
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} |
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82
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response = response.concat(responses[i].body); |
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83
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} |
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84
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|
85
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res.send(req.method !== 'HEAD' && response || undefined); |
|
86
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}); |
|
87
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}); |
|
88
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} else { |
|
89
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res.sendStatus(400); |
|
90
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} |
|
91
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}; |
|
92
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|
93
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|
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|
|
94
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module.exports = { |
|
95
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'get_protocol': get_protocol, |
|
96
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'check': function(token) { |
|
97
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return function (req, res, next) { |
|
98
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if (req.get('Authorization') === token) { |
|
99
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next(); |
|
100
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} else { |
|
101
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res.sendStatus(401); |
|
102
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} |
|
103
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}; |
|
104
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}, |
|
105
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'protocol': function(app) { |
|
106
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if (args.https) { |
|
107
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const fs = require('fs'); |
|
108
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|
|
109
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if (fs.existsSync('/certs/privkey.pem') && fs.existsSync('/certs/cert.pem')) { |
|
110
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try { |
|
111
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return require('https').createServer({ |
|
112
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key: fs.readFileSync('/certs/privkey.pem', 'utf8'), |
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113
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cert: fs.readFileSync('/certs/cert.pem', 'utf8'), |
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114
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ca: fs.existsSync('/certs/chain.pem') && fs.readFileSync('/certs/chain.pem', 'utf8') || undefined |
|
115
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}, app); |
|
116
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} catch (e) { |
|
117
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log.error('Could not start secure server: ' + e); |
|
118
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return require('http').createServer(app); |
|
119
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} |
|
120
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} |
|
121
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} |
|
122
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|
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|
|
123
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|
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return require('http').createServer(app); |
|
124
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|
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}, |
|
125
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|
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'balance': function(port) { |
|
126
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|
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if (args.cluster) { |
|
127
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|
|
// This runs only once |
|
128
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|
|
IP = get_protocol() + require('ip').address() + ':' + port; |
|
129
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|
|
machine = require('./machine.js'); |
|
130
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|
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request = require('request'); |
|
131
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|
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|
|
132
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|
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machine.cpu(IP); |
|
133
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|
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setInterval(function() { machine.cpu(IP); }, args.refresh_rate); |
|
134
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|
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} |
|
135
|
|
|
|
|
136
|
|
|
return function (req, res, next) { |
|
137
|
|
|
// This runs every request |
|
138
|
|
|
if (args.cluster && req.get('docker-server') !== 'force') { |
|
139
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|
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handle_cluster(req, res, next); |
|
140
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|
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} else { |
|
141
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|
|
next(); |
|
142
|
|
|
} |
|
143
|
|
|
}; |
|
144
|
|
|
} |
|
145
|
|
|
}; |
freaker2k7 /
dockerserver
