github.com/erda-project/erda-infra@v1.0.9/pkg/trace/inject/etcd-clientv3/etcd.go (about)

     1  // Copyright (c) 2021 Terminus, Inc.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package etcdclientv3
    16  
    17  import (
    18  	_ "unsafe" //nolint
    19  
    20  	"github.com/coreos/etcd/clientv3"
    21  	"google.golang.org/grpc"
    22  
    23  	grpccontext "github.com/erda-project/erda-infra/pkg/trace/inject/context/grpc"
    24  	"github.com/erda-project/erda-infra/pkg/trace/inject/hook"
    25  )
    26  
    27  //go:linkname newClient github.com/coreos/etcd/clientv3.newClient
    28  //go:noinline
    29  func newClient(cfg *clientv3.Config) (*clientv3.Client, error)
    30  
    31  //go:noinline
    32  func originalNewClient(cfg *clientv3.Config) (*clientv3.Client, error) {
    33  	return newClient(cfg)
    34  }
    35  
    36  //go:noinline
    37  func wrappedNewClient(cfg *clientv3.Config) (*clientv3.Client, error) {
    38  	cfg.DialOptions = append([]grpc.DialOption{
    39  		grpc.WithUnaryInterceptor(grpccontext.UnaryClientInterceptor()),
    40  		grpc.WithStreamInterceptor(grpccontext.StreamClientInterceptor()),
    41  	}, cfg.DialOptions...)
    42  	return originalNewClient(cfg)
    43  }
    44  
    45  func init() {
    46  	hook.Hook(newClient, wrappedNewClient, originalNewClient)
    47  }