dgate 2.1.0

DGate API Gateway - High-performance API gateway with JavaScript module support
Documentation 
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

"use strict";
module.exports = Method;

// extends ReflectionObject
var ReflectionObject = require("./object");
((Method.prototype = Object.create(ReflectionObject.prototype)).constructor = Method).className = "Method";

var util = require("./util");

/**
 * Constructs a new service method instance.
 * @classdesc Reflected service method.
 * @extends ReflectionObject
 * @constructor
 * @param {string} name Method name
 * @param {string|undefined} type Method type, usually `"rpc"`
 * @param {string} requestType Request message type
 * @param {string} responseType Response message type
 * @param {boolean|Object.<string,*>} [requestStream] Whether the request is streamed
 * @param {boolean|Object.<string,*>} [responseStream] Whether the response is streamed
 * @param {Object.<string,*>} [options] Declared options
 * @param {string} [comment] The comment for this method
 * @param {Object.<string,*>} [parsedOptions] Declared options, properly parsed into an object
 */
function Method(name, type, requestType, responseType, requestStream, responseStream, options, comment, parsedOptions) {

    /* istanbul ignore next */
    if (util.isObject(requestStream)) {
        options = requestStream;
        requestStream = responseStream = undefined;
    } else if (util.isObject(responseStream)) {
        options = responseStream;
        responseStream = undefined;
    }

    /* istanbul ignore if */
    if (!(type === undefined || util.isString(type)))
        throw TypeError("type must be a string");

    /* istanbul ignore if */
    if (!util.isString(requestType))
        throw TypeError("requestType must be a string");

    /* istanbul ignore if */
    if (!util.isString(responseType))
        throw TypeError("responseType must be a string");

    ReflectionObject.call(this, name, options);

    /**
     * Method type.
     * @type {string}
     */
    this.type = type || "rpc"; // toJSON

    /**
     * Request type.
     * @type {string}
     */
    this.requestType = requestType; // toJSON, marker

    /**
     * Whether requests are streamed or not.
     * @type {boolean|undefined}
     */
    this.requestStream = requestStream ? true : undefined; // toJSON

    /**
     * Response type.
     * @type {string}
     */
    this.responseType = responseType; // toJSON

    /**
     * Whether responses are streamed or not.
     * @type {boolean|undefined}
     */
    this.responseStream = responseStream ? true : undefined; // toJSON

    /**
     * Resolved request type.
     * @type {Type|null}
     */
    this.resolvedRequestType = null;

    /**
     * Resolved response type.
     * @type {Type|null}
     */
    this.resolvedResponseType = null;

    /**
     * Comment for this method
     * @type {string|null}
     */
    this.comment = comment;

    /**
     * Options properly parsed into an object
     */
    this.parsedOptions = parsedOptions;
}

/**
 * Method descriptor.
 * @interface IMethod
 * @property {string} [type="rpc"] Method type
 * @property {string} requestType Request type
 * @property {string} responseType Response type
 * @property {boolean} [requestStream=false] Whether requests are streamed
 * @property {boolean} [responseStream=false] Whether responses are streamed
 * @property {Object.<string,*>} [options] Method options
 * @property {string} comment Method comments
 * @property {Object.<string,*>} [parsedOptions] Method options properly parsed into an object
 */

/**
 * Constructs a method from a method descriptor.
 * @param {string} name Method name
 * @param {IMethod} json Method descriptor
 * @returns {Method} Created method
 * @throws {TypeError} If arguments are invalid
 */
Method.fromJSON = function fromJSON(name, json) {
    return new Method(name, json.type, json.requestType, json.responseType, json.requestStream, json.responseStream, json.options, json.comment, json.parsedOptions);
};

/**
 * Converts this method to a method descriptor.
 * @param {IToJSONOptions} [toJSONOptions] JSON conversion options
 * @returns {IMethod} Method descriptor
 */
Method.prototype.toJSON = function toJSON(toJSONOptions) {
    var keepComments = toJSONOptions ? Boolean(toJSONOptions.keepComments) : false;
    return util.toObject([
        "type"           , this.type !== "rpc" && /* istanbul ignore next */ this.type || undefined,
        "requestType"    , this.requestType,
        "requestStream"  , this.requestStream,
        "responseType"   , this.responseType,
        "responseStream" , this.responseStream,
        "options"        , this.options,
        "comment"        , keepComments ? this.comment : undefined,
        "parsedOptions"  , this.parsedOptions,
    ]);
};

/**
 * @override
 */
Method.prototype.resolve = function resolve() {

    /* istanbul ignore if */
    if (this.resolved)
        return this;

    this.resolvedRequestType = this.parent.lookupType(this.requestType);
    this.resolvedResponseType = this.parent.lookupType(this.responseType);

    return ReflectionObject.prototype.resolve.call(this);
};