54 lines
2.1 KiB
Go
54 lines
2.1 KiB
Go
/*
|
|
* 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"
|
|
"time"
|
|
)
|
|
|
|
var (
|
|
// 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)
|
|
// KeepaliveMinPingTime is the minimum ping interval. This must be 10s by
|
|
// default, but tests may wish to set it lower for convenience.
|
|
KeepaliveMinPingTime = 10 * time.Second
|
|
)
|
|
|
|
// 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"
|
|
)
|