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
|
/*
*
* 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.
*
*/
/**
* This module contains functions that are common to client and server
* code. None of them should be used directly by gRPC users.
* @module
*/
'use strict';
var _ = require('lodash');
/**
* Get a function that deserializes a specific type of protobuf.
* @param {function()} cls The constructor of the message type to deserialize
* @param {bool=} binaryAsBase64 Deserialize bytes fields as base64 strings
* instead of Buffers. Defaults to false
* @param {bool=} longsAsStrings Deserialize long values as strings instead of
* objects. Defaults to true
* @return {function(Buffer):cls} The deserialization function
*/
exports.deserializeCls = function deserializeCls(cls, binaryAsBase64,
longsAsStrings) {
if (binaryAsBase64 === undefined || binaryAsBase64 === null) {
binaryAsBase64 = false;
}
if (longsAsStrings === undefined || longsAsStrings === null) {
longsAsStrings = true;
}
/**
* Deserialize a buffer to a message object
* @param {Buffer} arg_buf The buffer to deserialize
* @return {cls} The resulting object
*/
return function deserialize(arg_buf) {
// Convert to a native object with binary fields as Buffers (first argument)
// and longs as strings (second argument)
return cls.decode(arg_buf).toRaw(binaryAsBase64, longsAsStrings);
};
};
var deserializeCls = exports.deserializeCls;
/**
* Get a function that serializes objects to a buffer by protobuf class.
* @param {function()} Cls The constructor of the message type to serialize
* @return {function(Cls):Buffer} The serialization function
*/
exports.serializeCls = function serializeCls(Cls) {
/**
* Serialize an object to a Buffer
* @param {Object} arg The object to serialize
* @return {Buffer} The serialized object
*/
return function serialize(arg) {
return new Buffer(new Cls(arg).encode().toBuffer());
};
};
var serializeCls = exports.serializeCls;
/**
* Get the fully qualified (dotted) name of a ProtoBuf.Reflect value.
* @param {ProtoBuf.Reflect.Namespace} value The value to get the name of
* @return {string} The fully qualified name of the value
*/
exports.fullyQualifiedName = function fullyQualifiedName(value) {
if (value === null || value === undefined) {
return '';
}
var name = value.name;
var parent_name = fullyQualifiedName(value.parent);
if (parent_name !== '') {
name = parent_name + '.' + name;
}
return name;
};
var fullyQualifiedName = exports.fullyQualifiedName;
/**
* Wrap a function to pass null-like values through without calling it. If no
* function is given, just uses the identity;
* @param {?function} func The function to wrap
* @return {function} The wrapped function
*/
exports.wrapIgnoreNull = function wrapIgnoreNull(func) {
if (!func) {
return _.identity;
}
return function(arg) {
if (arg === null || arg === undefined) {
return null;
}
return func(arg);
};
};
/**
* Return a map from method names to method attributes for the service.
* @param {ProtoBuf.Reflect.Service} service The service to get attributes for
* @param {Object=} options Options to apply to these attributes
* @return {Object} The attributes map
*/
exports.getProtobufServiceAttrs = function getProtobufServiceAttrs(service,
options) {
var prefix = '/' + fullyQualifiedName(service) + '/';
var binaryAsBase64, longsAsStrings;
if (options) {
binaryAsBase64 = options.binaryAsBase64;
longsAsStrings = options.longsAsStrings;
}
return _.object(_.map(service.children, function(method) {
return [_.camelCase(method.name), {
path: prefix + method.name,
requestStream: method.requestStream,
responseStream: method.responseStream,
requestType: method.resolvedRequestType,
responseType: method.resolvedResponseType,
requestSerialize: serializeCls(method.resolvedRequestType.build()),
requestDeserialize: deserializeCls(method.resolvedRequestType.build(),
binaryAsBase64, longsAsStrings),
responseSerialize: serializeCls(method.resolvedResponseType.build()),
responseDeserialize: deserializeCls(method.resolvedResponseType.build(),
binaryAsBase64, longsAsStrings)
}];
}));
};
|
