mirror of
https://github.com/VictoriaMetrics/VictoriaMetrics.git
synced 2024-12-01 14:47:38 +00:00
93 lines
4.3 KiB
Go
93 lines
4.3 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"
|
|
|
|
"google.golang.org/grpc/connectivity"
|
|
"google.golang.org/grpc/serviceconfig"
|
|
)
|
|
|
|
var (
|
|
// WithHealthCheckFunc is set 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 parses a JSON representation of the service config.
|
|
ParseServiceConfig interface{} // func(string) *serviceconfig.ParseResult
|
|
// EqualServiceConfigForTesting is for testing service config generation and
|
|
// parsing. Both a and b should be returned by ParseServiceConfig.
|
|
// This function compares the config without rawJSON stripped, in case the
|
|
// there's difference in white space.
|
|
EqualServiceConfigForTesting func(a, b serviceconfig.Config) bool
|
|
// GetCertificateProviderBuilder returns the registered builder for the
|
|
// given name. This is set by package certprovider for use from xDS
|
|
// bootstrap code while parsing certificate provider configs in the
|
|
// bootstrap file.
|
|
GetCertificateProviderBuilder interface{} // func(string) certprovider.Builder
|
|
// GetXDSHandshakeInfoForTesting returns a pointer to the xds.HandshakeInfo
|
|
// stored in the passed in attributes. This is set by
|
|
// credentials/xds/xds.go.
|
|
GetXDSHandshakeInfoForTesting interface{} // func (*attributes.Attributes) *xds.HandshakeInfo
|
|
// GetServerCredentials returns the transport credentials configured on a
|
|
// gRPC server. An xDS-enabled server needs to know what type of credentials
|
|
// is configured on the underlying gRPC server. This is set by server.go.
|
|
GetServerCredentials interface{} // func (*grpc.Server) credentials.TransportCredentials
|
|
// DrainServerTransports initiates a graceful close of existing connections
|
|
// on a gRPC server accepted on the provided listener address. An
|
|
// xDS-enabled server invokes this method on a grpc.Server when a particular
|
|
// listener moves to "not-serving" mode.
|
|
DrainServerTransports interface{} // func(*grpc.Server, string)
|
|
)
|
|
|
|
// 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:
|
|
// https://github.com/grpc/grpc/blob/master/doc/health-checking.md
|
|
type HealthChecker func(ctx context.Context, newStream func(string) (interface{}, error), setConnectivityState func(connectivity.State, error), 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"
|
|
)
|
|
|
|
// RLSLoadBalancingPolicyName is the name of the RLS LB policy.
|
|
//
|
|
// It currently has an experimental suffix which would be removed once
|
|
// end-to-end testing of the policy is completed.
|
|
const RLSLoadBalancingPolicyName = "rls_experimental"
|