mirror of https://github.com/grpc/grpc-go.git
53 lines
2.1 KiB
Go
53 lines
2.1 KiB
Go
/*
|
|
*
|
|
* Copyright 2019 gRPC authors.
|
|
*
|
|
* 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.
|
|
*
|
|
*/
|
|
|
|
// Package xdsclient implements a full fledged gRPC client for the xDS API used
|
|
// by the xds resolver and balancer implementations.
|
|
package xdsclient
|
|
|
|
import (
|
|
"google.golang.org/grpc/internal/xds/bootstrap"
|
|
"google.golang.org/grpc/xds/internal/xdsclient/load"
|
|
"google.golang.org/grpc/xds/internal/xdsclient/xdsresource"
|
|
)
|
|
|
|
// 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 {
|
|
// WatchResource uses xDS to discover the resource associated with the
|
|
// provided resource name. The resource type implementation determines how
|
|
// xDS responses are are deserialized and validated, as received from the
|
|
// xDS management server. Upon receipt of a response from the management
|
|
// server, an appropriate callback on the watcher is invoked.
|
|
//
|
|
// Most callers will not have a need to use this API directly. They will
|
|
// instead use a resource-type-specific wrapper API provided by the relevant
|
|
// resource type implementation.
|
|
//
|
|
//
|
|
// During a race (e.g. an xDS response is received while the user is calling
|
|
// cancel()), there's a small window where the callback can be called after
|
|
// the watcher is canceled. Callers need to handle this case.
|
|
WatchResource(rType xdsresource.Type, resourceName string, watcher xdsresource.ResourceWatcher) (cancel func())
|
|
|
|
ReportLoad(*bootstrap.ServerConfig) (*load.Store, func())
|
|
|
|
BootstrapConfig() *bootstrap.Config
|
|
}
|