mirror of
https://github.com/etcd-io/etcd.git
synced 2024-09-27 06:25:44 +00:00
60 lines
1.9 KiB
Go
60 lines
1.9 KiB
Go
// Copyright 2021 The etcd Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package transport
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import (
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"syscall"
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)
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type Controls []func(network, addr string, conn syscall.RawConn) error
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func (ctls Controls) Control(network, addr string, conn syscall.RawConn) error {
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for _, s := range ctls {
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if err := s(network, addr, conn); err != nil {
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return err
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}
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}
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return nil
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}
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type SocketOpts struct {
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// ReusePort enables socket option SO_REUSEPORT [1] which allows rebind of
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// a port already in use. User should keep in mind that flock can fail
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// in which case lock on data file could result in unexpected
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// condition. User should take caution to protect against lock race.
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// [1] https://man7.org/linux/man-pages/man7/socket.7.html
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ReusePort bool `json:"reuse-port"`
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// ReuseAddress enables a socket option SO_REUSEADDR which allows
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// binding to an address in `TIME_WAIT` state. Useful to improve MTTR
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// in cases where etcd slow to restart due to excessive `TIME_WAIT`.
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// [1] https://man7.org/linux/man-pages/man7/socket.7.html
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ReuseAddress bool `json:"reuse-address"`
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}
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func getControls(sopts *SocketOpts) Controls {
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ctls := Controls{}
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if sopts.ReuseAddress {
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ctls = append(ctls, setReuseAddress)
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}
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if sopts.ReusePort {
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ctls = append(ctls, setReusePort)
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}
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return ctls
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}
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func (sopts *SocketOpts) Empty() bool {
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return !sopts.ReuseAddress && !sopts.ReusePort
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}
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