1/*
2 *
3 * Copyright 2020 gRPC authors.
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 *     http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 *
17 */
18
19// Package version defines constants to distinguish between supported xDS API
20// versions.
21package version
22
23// TransportAPI refers to the API version for xDS transport protocol. This
24// describes the xDS gRPC endpoint and version of DiscoveryRequest/Response used
25// on the wire.
26type TransportAPI int
27
28const (
29	// TransportV2 refers to the v2 xDS transport protocol.
30	TransportV2 TransportAPI = iota
31	// TransportV3 refers to the v3 xDS transport protocol.
32	TransportV3
33)
34
35// Resource URLs. We need to be able to accept either version of the resource
36// regardless of the version of the transport protocol in use.
37const (
38	V2ListenerURL        = "type.googleapis.com/envoy.api.v2.Listener"
39	V2RouteConfigURL     = "type.googleapis.com/envoy.api.v2.RouteConfiguration"
40	V2ClusterURL         = "type.googleapis.com/envoy.api.v2.Cluster"
41	V2EndpointsURL       = "type.googleapis.com/envoy.api.v2.ClusterLoadAssignment"
42	V2HTTPConnManagerURL = "type.googleapis.com/envoy.config.filter.network.http_connection_manager.v2.HttpConnectionManager"
43
44	V3ListenerURL             = "type.googleapis.com/envoy.config.listener.v3.Listener"
45	V3RouteConfigURL          = "type.googleapis.com/envoy.config.route.v3.RouteConfiguration"
46	V3ClusterURL              = "type.googleapis.com/envoy.config.cluster.v3.Cluster"
47	V3EndpointsURL            = "type.googleapis.com/envoy.config.endpoint.v3.ClusterLoadAssignment"
48	V3HTTPConnManagerURL      = "type.googleapis.com/envoy.extensions.filters.network.http_connection_manager.v3.HttpConnectionManager"
49	V3UpstreamTLSContextURL   = "type.googleapis.com/envoy.extensions.transport_sockets.tls.v3.UpstreamTlsContext"
50	V3DownstreamTLSContextURL = "type.googleapis.com/envoy.extensions.transport_sockets.tls.v3.DownstreamTlsContext"
51)
52