blob: bc1f99ac80306a0d46031223cfaf809ea0144821 [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
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* 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 (
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
// ParseServiceConfig is a function to parse JSON service configs into
// opaque data structures.
ParseServiceConfig func(sc string) (interface{}, error)
// StatusRawProto is exported by status/status.go. This func returns a
// pointer to the wrapped Status proto for a given status.Status without a
// call to proto.Clone(). The returned Status proto should not be mutated by
// the caller.
StatusRawProto interface{} // func (*status.Status) *spb.Status
// HealthChecker defines the signature of the client-side LB channel health checking function.
// The implementation is expected to create a health checking RPC stream by
// calling newStream(), watch for the health status of serviceName, and report
// it's health back by calling setConnectivityState().
// The health checking protocol is defined at:
type HealthChecker func(ctx context.Context, newStream func(string) (interface{}, error), setConnectivityState func(connectivity.State), 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"