blob: eaa54d4fc628a4efe4867ed98542aad7ca323a31 [file] [log] [blame]
/*
* Copyright 2016 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 internal contains gRPC-internal code, to avoid polluting
// the godoc of the top-level grpc package. It must not import any grpc
// symbols to avoid circular dependencies.
package internal
import "context"
var (
// WithContextDialer is exported by dialoptions.go
WithContextDialer interface{} // func(context.Context, string) (net.Conn, error) grpc.DialOption
// WithResolverBuilder is exported by dialoptions.go
WithResolverBuilder interface{} // func (resolver.Builder) grpc.DialOption
// WithHealthCheckFunc is not exported by dialoptions.go
WithHealthCheckFunc interface{} // func (HealthChecker) DialOption
// HealthCheckFunc is used to provide client-side LB channel health checking
HealthCheckFunc HealthChecker
// BalancerUnregister is exported by package balancer to unregister a balancer.
BalancerUnregister func(name string)
)
// HealthChecker defines the signature of the client-side LB channel health checking function.
type HealthChecker func(ctx context.Context, newStream func() (interface{}, error), reportHealth func(bool), serviceName string) error
const (
// CredsBundleModeFallback switches GoogleDefaultCreds to fallback mode.
CredsBundleModeFallback = "fallback"
// CredsBundleModeBalancer switches GoogleDefaultCreds to grpclb balancer
// mode.
CredsBundleModeBalancer = "balancer"
// CredsBundleModeBackendFromBalancer switches GoogleDefaultCreds to mode
// that supports backend returned by grpclb balancer.
CredsBundleModeBackendFromBalancer = "backend-from-balancer"
)