f25951decb
Extra specs is an opaque valid JSON that can be set on a pool and which will be passed along to the provider as part of instance bootstrap params. This field is meant to allow operators to send extra configuration values to external or built-in providers. The extra specs is not interpreted or useful in any way to garm itself, but it may be useful to the provider which interacts with the IaaS. The extra specs are not meant to be used for secrets. Adding sensitive information to this field is highly discouraged. This field is meant as a means to add fine tuning knobs to the providers, on a per pool basis. Signed-off-by: Gabriel Adrian Samfira <gsamfira@cloudbasesolutions.com>
55 lines
1.2 KiB
Go
55 lines
1.2 KiB
Go
// Go MySQL Driver - A MySQL-Driver for Go's database/sql package
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//
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// Copyright 2019 The Go-MySQL-Driver Authors. All rights reserved.
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this file,
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// You can obtain one at http://mozilla.org/MPL/2.0/.
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//go:build linux || darwin || dragonfly || freebsd || netbsd || openbsd || solaris || illumos
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// +build linux darwin dragonfly freebsd netbsd openbsd solaris illumos
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package mysql
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import (
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"errors"
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"io"
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"net"
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"syscall"
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)
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var errUnexpectedRead = errors.New("unexpected read from socket")
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func connCheck(conn net.Conn) error {
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var sysErr error
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sysConn, ok := conn.(syscall.Conn)
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if !ok {
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return nil
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}
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rawConn, err := sysConn.SyscallConn()
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if err != nil {
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return err
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}
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err = rawConn.Read(func(fd uintptr) bool {
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var buf [1]byte
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n, err := syscall.Read(int(fd), buf[:])
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switch {
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case n == 0 && err == nil:
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sysErr = io.EOF
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case n > 0:
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sysErr = errUnexpectedRead
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case err == syscall.EAGAIN || err == syscall.EWOULDBLOCK:
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sysErr = nil
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default:
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sysErr = err
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}
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return true
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})
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if err != nil {
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return err
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}
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return sysErr
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}
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