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
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
|
// Copyright 2023 Google LLC
//
// 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.
syntax = "proto3";
package google.api;
option go_package = "google.golang.org/genproto/googleapis/api/serviceconfig;serviceconfig";
option java_multiple_files = true;
option java_outer_classname = "BackendProto";
option java_package = "com.google.api";
option objc_class_prefix = "GAPI";
// `Backend` defines the backend configuration for a service.
message Backend {
// A list of API backend rules that apply to individual API methods.
//
// **NOTE:** All service configuration rules follow "last one wins" order.
repeated BackendRule rules = 1;
}
// A backend rule provides configuration for an individual API element.
message BackendRule {
// Path Translation specifies how to combine the backend address with the
// request path in order to produce the appropriate forwarding URL for the
// request.
//
// Path Translation is applicable only to HTTP-based backends. Backends which
// do not accept requests over HTTP/HTTPS should leave `path_translation`
// unspecified.
enum PathTranslation {
PATH_TRANSLATION_UNSPECIFIED = 0;
// Use the backend address as-is, with no modification to the path. If the
// URL pattern contains variables, the variable names and values will be
// appended to the query string. If a query string parameter and a URL
// pattern variable have the same name, this may result in duplicate keys in
// the query string.
//
// # Examples
//
// Given the following operation config:
//
// Method path: /api/company/{cid}/user/{uid}
// Backend address: https://example.cloudfunctions.net/getUser
//
// Requests to the following request paths will call the backend at the
// translated path:
//
// Request path: /api/company/widgetworks/user/johndoe
// Translated:
// https://example.cloudfunctions.net/getUser?cid=widgetworks&uid=johndoe
//
// Request path: /api/company/widgetworks/user/johndoe?timezone=EST
// Translated:
// https://example.cloudfunctions.net/getUser?timezone=EST&cid=widgetworks&uid=johndoe
CONSTANT_ADDRESS = 1;
// The request path will be appended to the backend address.
//
// # Examples
//
// Given the following operation config:
//
// Method path: /api/company/{cid}/user/{uid}
// Backend address: https://example.appspot.com
//
// Requests to the following request paths will call the backend at the
// translated path:
//
// Request path: /api/company/widgetworks/user/johndoe
// Translated:
// https://example.appspot.com/api/company/widgetworks/user/johndoe
//
// Request path: /api/company/widgetworks/user/johndoe?timezone=EST
// Translated:
// https://example.appspot.com/api/company/widgetworks/user/johndoe?timezone=EST
APPEND_PATH_TO_ADDRESS = 2;
}
// Selects the methods to which this rule applies.
//
// Refer to [selector][google.api.DocumentationRule.selector] for syntax
// details.
string selector = 1;
// The address of the API backend.
//
// The scheme is used to determine the backend protocol and security.
// The following schemes are accepted:
//
// SCHEME PROTOCOL SECURITY
// http:// HTTP None
// https:// HTTP TLS
// grpc:// gRPC None
// grpcs:// gRPC TLS
//
// It is recommended to explicitly include a scheme. Leaving out the scheme
// may cause constrasting behaviors across platforms.
//
// If the port is unspecified, the default is:
// - 80 for schemes without TLS
// - 443 for schemes with TLS
//
// For HTTP backends, use [protocol][google.api.BackendRule.protocol]
// to specify the protocol version.
string address = 2;
// The number of seconds to wait for a response from a request. The default
// varies based on the request protocol and deployment environment.
double deadline = 3;
// Deprecated, do not use.
double min_deadline = 4 [deprecated = true];
// The number of seconds to wait for the completion of a long running
// operation. The default is no deadline.
double operation_deadline = 5;
PathTranslation path_translation = 6;
// Authentication settings used by the backend.
//
// These are typically used to provide service management functionality to
// a backend served on a publicly-routable URL. The `authentication`
// details should match the authentication behavior used by the backend.
//
// For example, specifying `jwt_audience` implies that the backend expects
// authentication via a JWT.
//
// When authentication is unspecified, the resulting behavior is the same
// as `disable_auth` set to `true`.
//
// Refer to https://developers.google.com/identity/protocols/OpenIDConnect for
// JWT ID token.
oneof authentication {
// The JWT audience is used when generating a JWT ID token for the backend.
// This ID token will be added in the HTTP "authorization" header, and sent
// to the backend.
string jwt_audience = 7;
// When disable_auth is true, a JWT ID token won't be generated and the
// original "Authorization" HTTP header will be preserved. If the header is
// used to carry the original token and is expected by the backend, this
// field must be set to true to preserve the header.
bool disable_auth = 8;
}
// The protocol used for sending a request to the backend.
// The supported values are "http/1.1" and "h2".
//
// The default value is inferred from the scheme in the
// [address][google.api.BackendRule.address] field:
//
// SCHEME PROTOCOL
// http:// http/1.1
// https:// http/1.1
// grpc:// h2
// grpcs:// h2
//
// For secure HTTP backends (https://) that support HTTP/2, set this field
// to "h2" for improved performance.
//
// Configuring this field to non-default values is only supported for secure
// HTTP backends. This field will be ignored for all other backends.
//
// See
// https://www.iana.org/assignments/tls-extensiontype-values/tls-extensiontype-values.xhtml#alpn-protocol-ids
// for more details on the supported values.
string protocol = 9;
// The map between request protocol and the backend address.
map<string, BackendRule> overrides_by_request_protocol = 10;
}
|
