| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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. |
| */ |
| |
| /* |
| * |
| * Copyright 2021 gRPC authors. |
| * |
| */ |
| |
| package client |
| |
| import ( |
| _struct "github.com/golang/protobuf/ptypes/struct" |
| |
| "google.golang.org/grpc/resolver" |
| ) |
| |
| import ( |
| "dubbo.apache.org/dubbo-go/v3/xds/client/bootstrap" |
| "dubbo.apache.org/dubbo-go/v3/xds/client/load" |
| "dubbo.apache.org/dubbo-go/v3/xds/client/resource" |
| ) |
| |
| type clientKeyType string |
| |
| const clientKey = clientKeyType("grpc.xds.internal.client.Client") |
| |
| // XDSClient is a full fledged gRPC client which queries a set of discovery APIs |
| // (collectively termed as xDS) on a remote management server, to discover |
| // various dynamic resources. |
| type XDSClient interface { |
| WatchListener(string, func(resource.ListenerUpdate, error)) func() |
| WatchRouteConfig(string, func(resource.RouteConfigUpdate, error)) func() |
| WatchCluster(string, func(resource.ClusterUpdate, error)) func() |
| WatchEndpoints(clusterName string, edsCb func(resource.EndpointsUpdate, error)) (cancel func()) |
| ReportLoad(server string) (*load.Store, func()) |
| |
| DumpLDS() map[string]resource.UpdateWithMD |
| DumpRDS() map[string]resource.UpdateWithMD |
| DumpCDS() map[string]resource.UpdateWithMD |
| DumpEDS() map[string]resource.UpdateWithMD |
| |
| BootstrapConfig() *bootstrap.Config |
| Close() |
| |
| /* |
| SetMetadata would reconnect tcp link with new metadata |
| */ |
| SetMetadata(*_struct.Struct) error |
| } |
| |
| // FromResolverState returns the Client from state, or nil if not present. |
| func FromResolverState(state resolver.State) XDSClient { |
| cs, _ := state.Attributes.Value(clientKey).(XDSClient) |
| return cs |
| } |
| |
| // SetClient sets c in state and returns the new state. |
| func SetClient(state resolver.State, c XDSClient) resolver.State { |
| state.Attributes = state.Attributes.WithValue(clientKey, c) |
| return state |
| } |