/
options.go
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/
options.go
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// Copyright 2020 The nfgo Authors. All Rights Reserved.
//
// 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 rpc
import (
"google.golang.org/grpc"
"nfgo.ga/nfgo/nmetrics"
"nfgo.ga/nfgo/rpc/interceptor"
)
type serverOptions struct {
metricsServer nmetrics.Server
unaryServerInterceptors []grpc.UnaryServerInterceptor
streamServerInterceptors []grpc.StreamServerInterceptor
}
func (opts *serverOptions) setInterceptors() {
unaryInterceptors := []grpc.UnaryServerInterceptor{interceptor.RecoverUnaryServerInterceptor}
if opts.metricsServer != nil {
unaryInterceptors = append(unaryInterceptors, opts.metricsServer.GrpcMetricsUnaryServerInterceptor())
}
unaryInterceptors = append(unaryInterceptors,
interceptor.RecoverUnaryServerInterceptor,
interceptor.MDCBindingUnaryServerInterceptor,
interceptor.ValidateUnaryServerInterceptor,
interceptor.LoggingUnaryServerInterceptor,
interceptor.ErrorHandleUnaryServerInterceptor)
if len(opts.unaryServerInterceptors) == 0 {
opts.unaryServerInterceptors = unaryInterceptors
} else {
opts.unaryServerInterceptors = append(unaryInterceptors, opts.unaryServerInterceptors...)
}
streamInterceptors := []grpc.StreamServerInterceptor{interceptor.RecoverStreamServerInterceptor}
if opts.metricsServer != nil {
streamInterceptors = append(streamInterceptors, opts.metricsServer.GrpcMetricsStramServerInterceptor())
}
streamInterceptors = append(streamInterceptors,
interceptor.MDCBindingStreamServerInterceptor,
interceptor.ValidateStreamServerInterceptor,
interceptor.LoggingStreamServerInterceptor,
interceptor.ErrorHandleStreamServerInterceptor)
if len(opts.streamServerInterceptors) == 0 {
opts.streamServerInterceptors = streamInterceptors
} else {
opts.streamServerInterceptors = append(streamInterceptors, opts.streamServerInterceptors...)
}
}
// ServerOption -
type ServerOption func(*serverOptions)
// MetricsServerOption -
func MetricsServerOption(s nmetrics.Server) ServerOption {
return func(opts *serverOptions) {
opts.metricsServer = s
}
}
// UnaryServerInterceptorOption -
func UnaryServerInterceptorOption(interceptors ...grpc.UnaryServerInterceptor) ServerOption {
return func(opts *serverOptions) {
opts.unaryServerInterceptors = interceptors
}
}
// StreamServerInterceptorOption -
func StreamServerInterceptorOption(interceptors ...grpc.StreamServerInterceptor) ServerOption {
return func(opts *serverOptions) {
opts.streamServerInterceptors = interceptors
}
}