vendor/google.golang.org/grpc/internal/internal.go


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/*
 * 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 clientconn.go
    WithContextDialer interface{} // func(context.Context, string) (net.Conn, error) grpc.DialOption
    // WithResolverBuilder is exported by clientconn.go
    WithResolverBuilder interface{} // func (resolver.Builder) grpc.DialOption
    // HealthCheckFunc is used to provide client-side LB channel health checking
    HealthCheckFunc 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"
)