go.etcd.io/etcd@v3.3.27+incompatible/pkg/transport/unix_listener.go (about)

     1  // Copyright 2016 The etcd Authors
     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 transport
    16  
    17  import (
    18  	"net"
    19  	"os"
    20  )
    21  
    22  type unixListener struct{ net.Listener }
    23  
    24  func NewUnixListener(addr string) (net.Listener, error) {
    25  	if err := os.Remove(addr); err != nil && !os.IsNotExist(err) {
    26  		return nil, err
    27  	}
    28  	l, err := net.Listen("unix", addr)
    29  	if err != nil {
    30  		return nil, err
    31  	}
    32  	return &unixListener{l}, nil
    33  }
    34  
    35  func (ul *unixListener) Close() error {
    36  	if err := os.Remove(ul.Addr().String()); err != nil && !os.IsNotExist(err) {
    37  		return err
    38  	}
    39  	return ul.Listener.Close()
    40  }