-
Notifications
You must be signed in to change notification settings - Fork 24
/
tradeoff-analytics-config.js
123 lines (108 loc) · 4 KB
/
tradeoff-analytics-config.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
/**
* Copyright 2014 IBM Corp. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
'use strict';
var watson = require('watson-developer-cloud'),
extend = require('util')._extend;
var defaultConnectionDetails = {
url: 'https://gateway.watsonplatform.net/tradeoff-analytics/api',
version: 'v1'
};
module.exports = {
setupToken: function(app,credentials) {
// override defaults
credentials = extend(defaultConnectionDetails, credentials);
//obtain credentials from bluemix environment variable VCAP_SERVICES
credentials = extend(credentials, getServiceCreds('tradeoff_analytics'));
var params = {
url: credentials.url
};
var authorization = watson.authorization(credentials);
app.post('/tradeoff-analytics-token', function(req, res) {
authorization.getToken(params, function (err, token) {
if (!token) {
console.log('error:', err);
res.status(err.code).send(err.error);
} else {
res.send(token);
}
});
});
},
setupProxy: function(app,credentials) {
// override defaults
credentials = extend(defaultConnectionDetails, credentials);
//obtain credentials from bluemix environment variable VCAP_SERVICES
credentials = extend(credentials, getServiceCreds('tradeoff_analytics'));
// Create the service wrapper
var tradeoffAnalytics = watson.tradeoff_analytics(credentials);
// Configure Express for json messages
var bodyParser = require('body-parser');
app.use(bodyParser.json({limit: '50mb'}));
app.use(bodyParser.urlencoded({limit: '50mb', extended: true}));
// set up proxy for dilemmas service
app.post('/tradeoff-analytics-proxy/dilemmas/', function(req, res) {
var params = extend(req.body);
params.metadata_header = getMetadata(req);
tradeoffAnalytics.dilemmas(params, function(err, dilemma) {
if (err)
return res.status(Number(err.code) || 502).send(err.error || err.message || 'Error processing the request');
else
return res.json(dilemma);
});
});
// set up proxy for events service
app.post('/tradeoff-analytics-proxy/events/', function(req, res) {
var params = extend(req.body);
params.metadata_header = getMetadata(req);
tradeoffAnalytics.events(params, function(err) {
if (err)
return res.status(Number(err.code) || 502).send(err.error || err.message || 'Error forwarding events');
else
return res.send();
});
});
function getMetadata(req) {
var metadata = req.header('x-watson-metadata');
if (metadata) {
metadata += "client-ip:" + req.ip;
}
return metadata;
}
}
}
/**
* if VCAP_SERVICES exists then it returns username, password and url
* for the first service that stars with 'name' or {} otherwise
* @param String name, service name
* @return {Object} the service credentials or {} if
* name is not found in VCAP_SERVICES
*/
function getServiceCreds(name) {
if (process.env.VCAP_SERVICES) {
var services = JSON.parse(process.env.VCAP_SERVICES);
for (var service_name in services) {
if (service_name.indexOf(name) === 0) {
var service = services[service_name][0];
return {
url: service.credentials.url,
username: service.credentials.username,
password: service.credentials.password
};
}
}
}
return {};
};