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54 lines
2.1 KiB
Go
54 lines
2.1 KiB
Go
/*
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* Copyright 2016 gRPC authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*/
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// Package internal contains gRPC-internal code, to avoid polluting
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// the godoc of the top-level grpc package. It must not import any grpc
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// symbols to avoid circular dependencies.
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package internal
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import (
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"context"
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"time"
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)
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var (
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// WithResolverBuilder is exported by dialoptions.go
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WithResolverBuilder interface{} // func (resolver.Builder) grpc.DialOption
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// WithHealthCheckFunc is not exported by dialoptions.go
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WithHealthCheckFunc interface{} // func (HealthChecker) DialOption
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// HealthCheckFunc is used to provide client-side LB channel health checking
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HealthCheckFunc HealthChecker
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// BalancerUnregister is exported by package balancer to unregister a balancer.
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BalancerUnregister func(name string)
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// KeepaliveMinPingTime is the minimum ping interval. This must be 10s by
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// default, but tests may wish to set it lower for convenience.
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KeepaliveMinPingTime = 10 * time.Second
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)
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// HealthChecker defines the signature of the client-side LB channel health checking function.
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type HealthChecker func(ctx context.Context, newStream func() (interface{}, error), reportHealth func(bool), serviceName string) error
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const (
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// CredsBundleModeFallback switches GoogleDefaultCreds to fallback mode.
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CredsBundleModeFallback = "fallback"
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// CredsBundleModeBalancer switches GoogleDefaultCreds to grpclb balancer
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// mode.
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CredsBundleModeBalancer = "balancer"
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// CredsBundleModeBackendFromBalancer switches GoogleDefaultCreds to mode
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// that supports backend returned by grpclb balancer.
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CredsBundleModeBackendFromBalancer = "backend-from-balancer"
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)
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