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// Copyright 2021 The etcd 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 grpc_testing
import (
"context"
"sync"
"google.golang.org/grpc"
"google.golang.org/grpc/metadata"
)
type GrpcRecorder struct {
mux sync.RWMutex
requests []RequestInfo
}
type RequestInfo struct {
FullMethod string
Authority string
}
func (ri *GrpcRecorder) UnaryInterceptor() grpc.UnaryServerInterceptor {
return func(ctx context.Context, req interface{}, info *grpc.UnaryServerInfo, handler grpc.UnaryHandler) (interface{}, error) {
ri.record(toRequestInfo(ctx, info))
resp, err := handler(ctx, req)
return resp, err
}
}
func (ri *GrpcRecorder) RecordedRequests() []RequestInfo {
ri.mux.RLock()
defer ri.mux.RUnlock()
reqs := make([]RequestInfo, len(ri.requests))
copy(reqs, ri.requests)
return reqs
}
func toRequestInfo(ctx context.Context, info *grpc.UnaryServerInfo) RequestInfo {
req := RequestInfo{
FullMethod: info.FullMethod,
}
md, ok := metadata.FromIncomingContext(ctx)
if ok {
as := md.Get(":authority")
if len(as) != 0 {
req.Authority = as[0]
}
}
return req
}
func (ri *GrpcRecorder) record(r RequestInfo) {
ri.mux.Lock()
defer ri.mux.Unlock()
ri.requests = append(ri.requests, r)
}
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