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
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
|
/*
*
* Copyright 2015, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
'use strict';
var _ = require('lodash');
var ProtoBuf = require('protobufjs');
var client = require('./src/client.js');
var server = require('./src/server.js');
var grpc = require('bindings')('grpc');
/**
* Load a gRPC object from an existing ProtoBuf.Reflect object.
* @param {ProtoBuf.Reflect.Namespace} value The ProtoBuf object to load.
* @return {Object<string, *>} The resulting gRPC object
*/
function loadObject(value) {
var result = {};
if (value.className === 'Namespace') {
_.each(value.children, function(child) {
result[child.name] = loadObject(child);
});
return result;
} else if (value.className === 'Service') {
return client.makeProtobufClientConstructor(value);
} else if (value.className === 'Message' || value.className === 'Enum') {
return value.build();
} else {
return value;
}
}
/**
* Load a gRPC object from a .proto file.
* @param {string} filename The file to load
* @param {string=} format The file format to expect. Must be either 'proto' or
* 'json'. Defaults to 'proto'
* @return {Object<string, *>} The resulting gRPC object
*/
function load(filename, format) {
if (!format) {
format = 'proto';
}
var builder;
switch(format) {
case 'proto':
builder = ProtoBuf.loadProtoFile(filename);
break;
case 'json':
builder = ProtoBuf.loadJsonFile(filename);
break;
default:
throw new Error('Unrecognized format "' + format + '"');
}
return loadObject(builder.ns);
}
/**
* Get a function that a client can use to update metadata with authentication
* information from a Google Auth credential object, which comes from the
* google-auth-library.
* @param {Object} credential The credential object to use
* @return {function(Object, callback)} Metadata updater function
*/
function getGoogleAuthDelegate(credential) {
/**
* Update a metadata object with authentication information.
* @param {string} authURI The uri to authenticate to
* @param {Object} metadata Metadata object
* @param {function(Error, Object)} callback
*/
return function updateMetadata(authURI, metadata, callback) {
metadata = _.clone(metadata);
if (metadata.Authorization) {
metadata.Authorization = _.clone(metadata.Authorization);
} else {
metadata.Authorization = [];
}
credential.getRequestMetadata(authURI, function(err, header) {
if (err) {
callback(err);
return;
}
metadata.Authorization.push(header.Authorization);
callback(null, metadata);
});
};
}
/**
* See docs for loadObject
*/
exports.loadObject = loadObject;
/**
* See docs for load
*/
exports.load = load;
/**
* See docs for Server
*/
exports.Server = server.Server;
/**
* Status name to code number mapping
*/
exports.status = grpc.status;
/**
* Call error name to code number mapping
*/
exports.callError = grpc.callError;
/**
* Credentials factories
*/
exports.Credentials = grpc.Credentials;
/**
* ServerCredentials factories
*/
exports.ServerCredentials = grpc.ServerCredentials;
exports.getGoogleAuthDelegate = getGoogleAuthDelegate;
exports.makeGenericClientConstructor = client.makeClientConstructor;
|
