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rebase: bump k8s.io/kubernetes from 1.26.2 to 1.27.2

Browse Source 
Bumps [k8s.io/kubernetes](https://github.com/kubernetes/kubernetes) from 1.26.2 to 1.27.2.
- [Release notes](https://github.com/kubernetes/kubernetes/releases)
- [Commits](https://github.com/kubernetes/kubernetes/compare/v1.26.2...v1.27.2)

---
updated-dependencies:
- dependency-name: k8s.io/kubernetes
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
This commit is contained in:
dependabot[bot]
2023-05-29 21:03:29 +00:00
committed by mergify[bot]
parent 0e79135419
commit 07b05616a0
1072 changed files with 208716 additions and 198880 deletions
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202
vendor/go.etcd.io/etcd/client/pkg/v3/LICENSE generated vendored Normal file
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Apache License
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28
vendor/go.etcd.io/etcd/client/pkg/v3/fileutil/dir_unix.go generated vendored Normal file
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// Copyright 2016 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.
//go:build !windows
// +build !windows
package fileutil
import "os"
const (
// PrivateDirMode grants owner to make/remove files inside the directory.
PrivateDirMode = 0700
)
// OpenDir opens a directory for syncing.
func OpenDir(path string) (*os.File, error) { return os.Open(path) }

52
vendor/go.etcd.io/etcd/client/pkg/v3/fileutil/dir_windows.go generated vendored Normal file
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// Copyright 2016 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.
//go:build windows
// +build windows
package fileutil
import (
"os"
"syscall"
)
const (
// PrivateDirMode grants owner to make/remove files inside the directory.
PrivateDirMode = 0777
)
// OpenDir opens a directory in windows with write access for syncing.
func OpenDir(path string) (*os.File, error) {
fd, err := openDir(path)
if err != nil {
return nil, err
}
return os.NewFile(uintptr(fd), path), nil
}
func openDir(path string) (fd syscall.Handle, err error) {
if len(path) == 0 {
return syscall.InvalidHandle, syscall.ERROR_FILE_NOT_FOUND
}
pathp, err := syscall.UTF16PtrFromString(path)
if err != nil {
return syscall.InvalidHandle, err
}
access := uint32(syscall.GENERIC_READ | syscall.GENERIC_WRITE)
sharemode := uint32(syscall.FILE_SHARE_READ | syscall.FILE_SHARE_WRITE)
createmode := uint32(syscall.OPEN_EXISTING)
fl := uint32(syscall.FILE_FLAG_BACKUP_SEMANTICS)
return syscall.CreateFile(pathp, access, sharemode, nil, createmode, fl, 0)
}

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vendor/go.etcd.io/etcd/client/pkg/v3/fileutil/doc.go generated vendored Normal file
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// Copyright 2018 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 fileutil implements utility functions related to files and paths.
package fileutil

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vendor/go.etcd.io/etcd/client/pkg/v3/fileutil/filereader.go generated vendored Normal file
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// Copyright 2022 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 fileutil
import (
"bufio"
"io"
"io/fs"
"os"
)
// FileReader is a wrapper of io.Reader. It also provides file info.
type FileReader interface {
io.Reader
FileInfo() (fs.FileInfo, error)
}
type fileReader struct {
*os.File
}
func NewFileReader(f *os.File) FileReader {
return &fileReader{f}
}
func (fr *fileReader) FileInfo() (fs.FileInfo, error) {
return fr.Stat()
}
// FileBufReader is a wrapper of bufio.Reader. It also provides file info.
type FileBufReader struct {
*bufio.Reader
fi fs.FileInfo
}
func NewFileBufReader(fr FileReader) *FileBufReader {
bufReader := bufio.NewReader(fr)
fi, err := fr.FileInfo()
if err != nil {
// This should never happen.
panic(err)
}
return &FileBufReader{bufReader, fi}
}
func (fbr *FileBufReader) FileInfo() fs.FileInfo {
return fbr.fi
}

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vendor/go.etcd.io/etcd/client/pkg/v3/fileutil/fileutil.go generated vendored Normal file
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// Copyright 2015 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 fileutil
import (
"fmt"
"io"
"io/ioutil"
"os"
"path/filepath"
"go.uber.org/zap"
)
const (
// PrivateFileMode grants owner to read/write a file.
PrivateFileMode = 0600
)
// IsDirWriteable checks if dir is writable by writing and removing a file
// to dir. It returns nil if dir is writable.
func IsDirWriteable(dir string) error {
f, err := filepath.Abs(filepath.Join(dir, ".touch"))
if err != nil {
return err
}
if err := ioutil.WriteFile(f, []byte(""), PrivateFileMode); err != nil {
return err
}
return os.Remove(f)
}
// TouchDirAll is similar to os.MkdirAll. It creates directories with 0700 permission if any directory
// does not exists. TouchDirAll also ensures the given directory is writable.
func TouchDirAll(lg *zap.Logger, dir string) error {
// If path is already a directory, MkdirAll does nothing and returns nil, so,
// first check if dir exist with an expected permission mode.
if Exist(dir) {
err := CheckDirPermission(dir, PrivateDirMode)
if err != nil {
lg.Warn("check file permission", zap.Error(err))
}
} else {
err := os.MkdirAll(dir, PrivateDirMode)
if err != nil {
// if mkdirAll("a/text") and "text" is not
// a directory, this will return syscall.ENOTDIR
return err
}
}
return IsDirWriteable(dir)
}
// CreateDirAll is similar to TouchDirAll but returns error
// if the deepest directory was not empty.
func CreateDirAll(lg *zap.Logger, dir string) error {
err := TouchDirAll(lg, dir)
if err == nil {
var ns []string
ns, err = ReadDir(dir)
if err != nil {
return err
}
if len(ns) != 0 {
err = fmt.Errorf("expected %q to be empty, got %q", dir, ns)
}
}
return err
}
// Exist returns true if a file or directory exists.
func Exist(name string) bool {
_, err := os.Stat(name)
return err == nil
}
// DirEmpty returns true if a directory empty and can access.
func DirEmpty(name string) bool {
ns, err := ReadDir(name)
return len(ns) == 0 && err == nil
}
// ZeroToEnd zeros a file starting from SEEK_CUR to its SEEK_END. May temporarily
// shorten the length of the file.
func ZeroToEnd(f *os.File) error {
// TODO: support FALLOC_FL_ZERO_RANGE
off, err := f.Seek(0, io.SeekCurrent)
if err != nil {
return err
}
lenf, lerr := f.Seek(0, io.SeekEnd)
if lerr != nil {
return lerr
}
if err = f.Truncate(off); err != nil {
return err
}
// make sure blocks remain allocated
if err = Preallocate(f, lenf, true); err != nil {
return err
}
_, err = f.Seek(off, io.SeekStart)
return err
}
// CheckDirPermission checks permission on an existing dir.
// Returns error if dir is empty or exist with a different permission than specified.
func CheckDirPermission(dir string, perm os.FileMode) error {
if !Exist(dir) {
return fmt.Errorf("directory %q empty, cannot check permission", dir)
}
//check the existing permission on the directory
dirInfo, err := os.Stat(dir)
if err != nil {
return err
}
dirMode := dirInfo.Mode().Perm()
if dirMode != perm {
err = fmt.Errorf("directory %q exist, but the permission is %q. The recommended permission is %q to prevent possible unprivileged access to the data", dir, dirInfo.Mode(), os.FileMode(PrivateDirMode))
return err
}
return nil
}
// RemoveMatchFile deletes file if matchFunc is true on an existing dir
// Returns error if the dir does not exist or remove file fail
func RemoveMatchFile(lg *zap.Logger, dir string, matchFunc func(fileName string) bool) error {
if lg == nil {
lg = zap.NewNop()
}
if !Exist(dir) {
return fmt.Errorf("directory %s does not exist", dir)
}
fileNames, err := ReadDir(dir)
if err != nil {
return err
}
var removeFailedFiles []string
for _, fileName := range fileNames {
if matchFunc(fileName) {
file := filepath.Join(dir, fileName)
if err = os.Remove(file); err != nil {
removeFailedFiles = append(removeFailedFiles, fileName)
lg.Error("remove file failed",
zap.String("file", file),
zap.Error(err))
continue
}
}
}
if len(removeFailedFiles) != 0 {
return fmt.Errorf("remove file(s) %v error", removeFailedFiles)
}
return nil
}

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vendor/go.etcd.io/etcd/client/pkg/v3/fileutil/lock.go generated vendored Normal file
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// Copyright 2016 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 fileutil
import (
"errors"
"os"
)
var (
ErrLocked = errors.New("fileutil: file already locked")
)
type LockedFile struct{ *os.File }

50
vendor/go.etcd.io/etcd/client/pkg/v3/fileutil/lock_flock.go generated vendored Normal file
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// Copyright 2016 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.
//go:build !windows && !plan9 && !solaris
// +build !windows,!plan9,!solaris
package fileutil
import (
"os"
"syscall"
)
func flockTryLockFile(path string, flag int, perm os.FileMode) (*LockedFile, error) {
f, err := os.OpenFile(path, flag, perm)
if err != nil {
return nil, err
}
if err = syscall.Flock(int(f.Fd()), syscall.LOCK_EX|syscall.LOCK_NB); err != nil {
f.Close()
if err == syscall.EWOULDBLOCK {
err = ErrLocked
}
return nil, err
}
return &LockedFile{f}, nil
}
func flockLockFile(path string, flag int, perm os.FileMode) (*LockedFile, error) {
f, err := os.OpenFile(path, flag, perm)
if err != nil {
return nil, err
}
if err = syscall.Flock(int(f.Fd()), syscall.LOCK_EX); err != nil {
f.Close()
return nil, err
}
return &LockedFile{f}, err
}

93
vendor/go.etcd.io/etcd/client/pkg/v3/fileutil/lock_linux.go generated vendored Normal file
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// Copyright 2016 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.
//go:build linux
// +build linux
package fileutil
import (
"fmt"
"io"
"os"
"syscall"
"golang.org/x/sys/unix"
)
// This used to call syscall.Flock() but that call fails with EBADF on NFS.
// An alternative is lockf() which works on NFS but that call lets a process lock
// the same file twice. Instead, use Linux's non-standard open file descriptor
// locks which will block if the process already holds the file lock.
var (
wrlck = syscall.Flock_t{
Type: syscall.F_WRLCK,
Whence: int16(io.SeekStart),
Start: 0,
Len: 0,
}
linuxTryLockFile = flockTryLockFile
linuxLockFile = flockLockFile
)
func init() {
// use open file descriptor locks if the system supports it
getlk := syscall.Flock_t{Type: syscall.F_RDLCK}
if err := syscall.FcntlFlock(0, unix.F_OFD_GETLK, &getlk); err == nil {
linuxTryLockFile = ofdTryLockFile
linuxLockFile = ofdLockFile
}
}
func TryLockFile(path string, flag int, perm os.FileMode) (*LockedFile, error) {
return linuxTryLockFile(path, flag, perm)
}
func ofdTryLockFile(path string, flag int, perm os.FileMode) (*LockedFile, error) {
f, err := os.OpenFile(path, flag, perm)
if err != nil {
return nil, fmt.Errorf("ofdTryLockFile failed to open %q (%v)", path, err)
}
flock := wrlck
if err = syscall.FcntlFlock(f.Fd(), unix.F_OFD_SETLK, &flock); err != nil {
f.Close()
if err == syscall.EWOULDBLOCK {
err = ErrLocked
}
return nil, err
}
return &LockedFile{f}, nil
}
func LockFile(path string, flag int, perm os.FileMode) (*LockedFile, error) {
return linuxLockFile(path, flag, perm)
}
func ofdLockFile(path string, flag int, perm os.FileMode) (*LockedFile, error) {
f, err := os.OpenFile(path, flag, perm)
if err != nil {
return nil, fmt.Errorf("ofdLockFile failed to open %q (%v)", path, err)
}
flock := wrlck
err = syscall.FcntlFlock(f.Fd(), unix.F_OFD_SETLKW, &flock)
if err != nil {
f.Close()
return nil, err
}
return &LockedFile{f}, nil
}

45
vendor/go.etcd.io/etcd/client/pkg/v3/fileutil/lock_plan9.go generated vendored Normal file
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// Copyright 2015 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 fileutil
import (
"os"
"syscall"
"time"
)
func TryLockFile(path string, flag int, perm os.FileMode) (*LockedFile, error) {
if err := os.Chmod(path, syscall.DMEXCL|PrivateFileMode); err != nil {
return nil, err
}
f, err := os.Open(path, flag, perm)
if err != nil {
return nil, ErrLocked
}
return &LockedFile{f}, nil
}
func LockFile(path string, flag int, perm os.FileMode) (*LockedFile, error) {
if err := os.Chmod(path, syscall.DMEXCL|PrivateFileMode); err != nil {
return nil, err
}
for {
f, err := os.OpenFile(path, flag, perm)
if err == nil {
return &LockedFile{f}, nil
}
time.Sleep(10 * time.Millisecond)
}
}

63
vendor/go.etcd.io/etcd/client/pkg/v3/fileutil/lock_solaris.go generated vendored Normal file
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// Copyright 2015 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.
//go:build solaris
// +build solaris
package fileutil
import (
"os"
"syscall"
)
func TryLockFile(path string, flag int, perm os.FileMode) (*LockedFile, error) {
var lock syscall.Flock_t
lock.Start = 0
lock.Len = 0
lock.Pid = 0
lock.Type = syscall.F_WRLCK
lock.Whence = 0
lock.Pid = 0
f, err := os.OpenFile(path, flag, perm)
if err != nil {
return nil, err
}
if err := syscall.FcntlFlock(f.Fd(), syscall.F_SETLK, &lock); err != nil {
f.Close()
if err == syscall.EAGAIN {
err = ErrLocked
}
return nil, err
}
return &LockedFile{f}, nil
}
func LockFile(path string, flag int, perm os.FileMode) (*LockedFile, error) {
var lock syscall.Flock_t
lock.Start = 0
lock.Len = 0
lock.Pid = 0
lock.Type = syscall.F_WRLCK
lock.Whence = 0
f, err := os.OpenFile(path, flag, perm)
if err != nil {
return nil, err
}
if err = syscall.FcntlFlock(f.Fd(), syscall.F_SETLKW, &lock); err != nil {
f.Close()
return nil, err
}
return &LockedFile{f}, nil
}

30
vendor/go.etcd.io/etcd/client/pkg/v3/fileutil/lock_unix.go generated vendored Normal file
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// Copyright 2015 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.
//go:build !windows && !plan9 && !solaris && !linux
// +build !windows,!plan9,!solaris,!linux
package fileutil
import (
"os"
)
func TryLockFile(path string, flag int, perm os.FileMode) (*LockedFile, error) {
return flockTryLockFile(path, flag, perm)
}
func LockFile(path string, flag int, perm os.FileMode) (*LockedFile, error) {
return flockLockFile(path, flag, perm)
}

126
vendor/go.etcd.io/etcd/client/pkg/v3/fileutil/lock_windows.go generated vendored Normal file
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// Copyright 2015 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.
//go:build windows
// +build windows
package fileutil
import (
"errors"
"fmt"
"os"
"syscall"
"unsafe"
)
var (
modkernel32 = syscall.NewLazyDLL("kernel32.dll")
procLockFileEx = modkernel32.NewProc("LockFileEx")
errLocked = errors.New("the process cannot access the file because another process has locked a portion of the file")
)
const (
// https://msdn.microsoft.com/en-us/library/windows/desktop/aa365203(v=vs.85).aspx
LOCKFILE_EXCLUSIVE_LOCK = 2
LOCKFILE_FAIL_IMMEDIATELY = 1
// see https://msdn.microsoft.com/en-us/library/windows/desktop/ms681382(v=vs.85).aspx
errLockViolation syscall.Errno = 0x21
)
func TryLockFile(path string, flag int, perm os.FileMode) (*LockedFile, error) {
f, err := open(path, flag, perm)
if err != nil {
return nil, err
}
if err := lockFile(syscall.Handle(f.Fd()), LOCKFILE_FAIL_IMMEDIATELY); err != nil {
f.Close()
return nil, err
}
return &LockedFile{f}, nil
}
func LockFile(path string, flag int, perm os.FileMode) (*LockedFile, error) {
f, err := open(path, flag, perm)
if err != nil {
return nil, err
}
if err := lockFile(syscall.Handle(f.Fd()), 0); err != nil {
f.Close()
return nil, err
}
return &LockedFile{f}, nil
}
func open(path string, flag int, perm os.FileMode) (*os.File, error) {
if path == "" {
return nil, fmt.Errorf("cannot open empty filename")
}
var access uint32
switch flag {
case syscall.O_RDONLY:
access = syscall.GENERIC_READ
case syscall.O_WRONLY:
access = syscall.GENERIC_WRITE
case syscall.O_RDWR:
access = syscall.GENERIC_READ | syscall.GENERIC_WRITE
case syscall.O_WRONLY | syscall.O_CREAT:
access = syscall.GENERIC_ALL
default:
panic(fmt.Errorf("flag %v is not supported", flag))
}
fd, err := syscall.CreateFile(&(syscall.StringToUTF16(path)[0]),
access,
syscall.FILE_SHARE_READ|syscall.FILE_SHARE_WRITE|syscall.FILE_SHARE_DELETE,
nil,
syscall.OPEN_ALWAYS,
syscall.FILE_ATTRIBUTE_NORMAL,
0)
if err != nil {
return nil, err
}
return os.NewFile(uintptr(fd), path), nil
}
func lockFile(fd syscall.Handle, flags uint32) error {
var flag uint32 = LOCKFILE_EXCLUSIVE_LOCK
flag |= flags
if fd == syscall.InvalidHandle {
return nil
}
err := lockFileEx(fd, flag, 1, 0, &syscall.Overlapped{})
if err == nil {
return nil
} else if err.Error() == errLocked.Error() {
return ErrLocked
} else if err != errLockViolation {
return err
}
return nil
}
func lockFileEx(h syscall.Handle, flags, locklow, lockhigh uint32, ol *syscall.Overlapped) (err error) {
var reserved uint32 = 0
r1, _, e1 := syscall.Syscall6(procLockFileEx.Addr(), 6, uintptr(h), uintptr(flags), uintptr(reserved), uintptr(locklow), uintptr(lockhigh), uintptr(unsafe.Pointer(ol)))
if r1 == 0 {
if e1 != 0 {
err = error(e1)
} else {
err = syscall.EINVAL
}
}
return err
}

54
vendor/go.etcd.io/etcd/client/pkg/v3/fileutil/preallocate.go generated vendored Normal file
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// Copyright 2015 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 fileutil
import (
"io"
"os"
)
// Preallocate tries to allocate the space for given
// file. This operation is only supported on linux by a
// few filesystems (btrfs, ext4, etc.).
// If the operation is unsupported, no error will be returned.
// Otherwise, the error encountered will be returned.
func Preallocate(f *os.File, sizeInBytes int64, extendFile bool) error {
if sizeInBytes == 0 {
// fallocate will return EINVAL if length is 0; skip
return nil
}
if extendFile {
return preallocExtend(f, sizeInBytes)
}
return preallocFixed(f, sizeInBytes)
}
func preallocExtendTrunc(f *os.File, sizeInBytes int64) error {
curOff, err := f.Seek(0, io.SeekCurrent)
if err != nil {
return err
}
size, err := f.Seek(sizeInBytes, io.SeekEnd)
if err != nil {
return err
}
if _, err = f.Seek(curOff, io.SeekStart); err != nil {
return err
}
if sizeInBytes > size {
return nil
}
return f.Truncate(sizeInBytes)
}

67
vendor/go.etcd.io/etcd/client/pkg/v3/fileutil/preallocate_darwin.go generated vendored Normal file
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// Copyright 2016 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.
//go:build darwin
// +build darwin
package fileutil
import (
"os"
"syscall"
"golang.org/x/sys/unix"
)
func preallocExtend(f *os.File, sizeInBytes int64) error {
if err := preallocFixed(f, sizeInBytes); err != nil {
return err
}
return preallocExtendTrunc(f, sizeInBytes)
}
func preallocFixed(f *os.File, sizeInBytes int64) error {
// allocate all requested space or no space at all
// TODO: allocate contiguous space on disk with F_ALLOCATECONTIG flag
fstore := &unix.Fstore_t{
Flags: unix.F_ALLOCATEALL,
Posmode: unix.F_PEOFPOSMODE,
Length: sizeInBytes,
}
err := unix.FcntlFstore(f.Fd(), unix.F_PREALLOCATE, fstore)
if err == nil || err == unix.ENOTSUP {
return nil
}
// wrong argument to fallocate syscall
if err == unix.EINVAL {
// filesystem "st_blocks" are allocated in the units of
// "Allocation Block Size" (run "diskutil info /" command)
var stat syscall.Stat_t
syscall.Fstat(int(f.Fd()), &stat)
// syscall.Statfs_t.Bsize is "optimal transfer block size"
// and contains matching 4096 value when latest OS X kernel
// supports 4,096 KB filesystem block size
var statfs syscall.Statfs_t
syscall.Fstatfs(int(f.Fd()), &statfs)
blockSize := int64(statfs.Bsize)
if stat.Blocks*blockSize >= sizeInBytes {
// enough blocks are already allocated
return nil
}
}
return err
}

50
vendor/go.etcd.io/etcd/client/pkg/v3/fileutil/preallocate_unix.go generated vendored Normal file
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// Copyright 2016 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.
//go:build linux
// +build linux
package fileutil
import (
"os"
"syscall"
)
func preallocExtend(f *os.File, sizeInBytes int64) error {
// use mode = 0 to change size
err := syscall.Fallocate(int(f.Fd()), 0, 0, sizeInBytes)
if err != nil {
errno, ok := err.(syscall.Errno)
// not supported; fallback
// fallocate EINTRs frequently in some environments; fallback
if ok && (errno == syscall.ENOTSUP || errno == syscall.EINTR) {
return preallocExtendTrunc(f, sizeInBytes)
}
}
return err
}
func preallocFixed(f *os.File, sizeInBytes int64) error {
// use mode = 1 to keep size; see FALLOC_FL_KEEP_SIZE
err := syscall.Fallocate(int(f.Fd()), 1, 0, sizeInBytes)
if err != nil {
errno, ok := err.(syscall.Errno)
// treat not supported as nil error
if ok && errno == syscall.ENOTSUP {
return nil
}
}
return err
}

26
vendor/go.etcd.io/etcd/client/pkg/v3/fileutil/preallocate_unsupported.go generated vendored Normal file
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// Copyright 2015 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.
//go:build !linux && !darwin
// +build !linux,!darwin
package fileutil
import "os"
func preallocExtend(f *os.File, sizeInBytes int64) error {
return preallocExtendTrunc(f, sizeInBytes)
}
func preallocFixed(f *os.File, sizeInBytes int64) error { return nil }

101
vendor/go.etcd.io/etcd/client/pkg/v3/fileutil/purge.go generated vendored Normal file
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// Copyright 2015 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 fileutil
import (
"os"
"path/filepath"
"sort"
"strings"
"time"
"go.uber.org/zap"
)
func PurgeFile(lg *zap.Logger, dirname string, suffix string, max uint, interval time.Duration, stop <-chan struct{}) <-chan error {
return purgeFile(lg, dirname, suffix, max, interval, stop, nil, nil)
}
func PurgeFileWithDoneNotify(lg *zap.Logger, dirname string, suffix string, max uint, interval time.Duration, stop <-chan struct{}) (<-chan struct{}, <-chan error) {
doneC := make(chan struct{})
errC := purgeFile(lg, dirname, suffix, max, interval, stop, nil, doneC)
return doneC, errC
}
// purgeFile is the internal implementation for PurgeFile which can post purged files to purgec if non-nil.
// if donec is non-nil, the function closes it to notify its exit.
func purgeFile(lg *zap.Logger, dirname string, suffix string, max uint, interval time.Duration, stop <-chan struct{}, purgec chan<- string, donec chan<- struct{}) <-chan error {
if lg == nil {
lg = zap.NewNop()
}
errC := make(chan error, 1)
lg.Info("started to purge file",
zap.String("dir", dirname),
zap.String("suffix", suffix),
zap.Uint("max", max),
zap.Duration("interval", interval))
go func() {
if donec != nil {
defer close(donec)
}
for {
fnames, err := ReadDir(dirname)
if err != nil {
errC <- err
return
}
newfnames := make([]string, 0)
for _, fname := range fnames {
if strings.HasSuffix(fname, suffix) {
newfnames = append(newfnames, fname)
}
}
sort.Strings(newfnames)
fnames = newfnames
for len(newfnames) > int(max) {
f := filepath.Join(dirname, newfnames[0])
l, err := TryLockFile(f, os.O_WRONLY, PrivateFileMode)
if err != nil {
lg.Warn("failed to lock file", zap.String("path", f), zap.Error(err))
break
}
if err = os.Remove(f); err != nil {
lg.Error("failed to remove file", zap.String("path", f), zap.Error(err))
errC <- err
return
}
if err = l.Close(); err != nil {
lg.Error("failed to unlock/close", zap.String("path", l.Name()), zap.Error(err))
errC <- err
return
}
lg.Info("purged", zap.String("path", f))
newfnames = newfnames[1:]
}
if purgec != nil {
for i := 0; i < len(fnames)-len(newfnames); i++ {
purgec <- fnames[i]
}
}
select {
case <-time.After(interval):
case <-stop:
return
}
}
}()
return errC
}

70
vendor/go.etcd.io/etcd/client/pkg/v3/fileutil/read_dir.go generated vendored Normal file
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// Copyright 2018 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 fileutil
import (
"os"
"path/filepath"
"sort"
)
// ReadDirOp represents an read-directory operation.
type ReadDirOp struct {
ext string
}
// ReadDirOption configures archiver operations.
type ReadDirOption func(*ReadDirOp)
// WithExt filters file names by their extensions.
// (e.g. WithExt(".wal") to list only WAL files)
func WithExt(ext string) ReadDirOption {
return func(op *ReadDirOp) { op.ext = ext }
}
func (op *ReadDirOp) applyOpts(opts []ReadDirOption) {
for _, opt := range opts {
opt(op)
}
}
// ReadDir returns the filenames in the given directory in sorted order.
func ReadDir(d string, opts ...ReadDirOption) ([]string, error) {
op := &ReadDirOp{}
op.applyOpts(opts)
dir, err := os.Open(d)
if err != nil {
return nil, err
}
defer dir.Close()
names, err := dir.Readdirnames(-1)
if err != nil {
return nil, err
}
sort.Strings(names)
if op.ext != "" {
tss := make([]string, 0)
for _, v := range names {
if filepath.Ext(v) == op.ext {
tss = append(tss, v)
}
}
names = tss
}
return names, nil
}

30
vendor/go.etcd.io/etcd/client/pkg/v3/fileutil/sync.go generated vendored Normal file
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// Copyright 2016 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.
//go:build !linux && !darwin
// +build !linux,!darwin
package fileutil
import "os"
// Fsync is a wrapper around file.Sync(). Special handling is needed on darwin platform.
func Fsync(f *os.File) error {
return f.Sync()
}
// Fdatasync is a wrapper around file.Sync(). Special handling is needed on linux platform.
func Fdatasync(f *os.File) error {
return f.Sync()
}

39
vendor/go.etcd.io/etcd/client/pkg/v3/fileutil/sync_darwin.go generated vendored Normal file
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@ -0,0 +1,39 @@
// Copyright 2016 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.
//go:build darwin
// +build darwin
package fileutil
import (
"os"
"golang.org/x/sys/unix"
)
// Fsync on HFS/OSX flushes the data on to the physical drive but the drive
// may not write it to the persistent media for quite sometime and it may be
// written in out-of-order sequence. Using F_FULLFSYNC ensures that the
// physical drive's buffer will also get flushed to the media.
func Fsync(f *os.File) error {
_, err := unix.FcntlInt(f.Fd(), unix.F_FULLFSYNC, 0)
return err
}
// Fdatasync on darwin platform invokes fcntl(F_FULLFSYNC) for actual persistence
// on physical drive media.
func Fdatasync(f *os.File) error {
return Fsync(f)
}

35
vendor/go.etcd.io/etcd/client/pkg/v3/fileutil/sync_linux.go generated vendored Normal file
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// Copyright 2016 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.
//go:build linux
// +build linux
package fileutil
import (
"os"
"syscall"
)
// Fsync is a wrapper around file.Sync(). Special handling is needed on darwin platform.
func Fsync(f *os.File) error {
return f.Sync()
}
// Fdatasync is similar to fsync(), but does not flush modified metadata
// unless that metadata is needed in order to allow a subsequent data retrieval
// to be correctly handled.
func Fdatasync(f *os.File) error {
return syscall.Fdatasync(int(f.Fd()))
}

16
vendor/go.etcd.io/etcd/client/pkg/v3/logutil/doc.go generated vendored Normal file
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@ -0,0 +1,16 @@
// Copyright 2018 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 logutil includes utilities to facilitate logging.
package logutil

30
vendor/go.etcd.io/etcd/client/pkg/v3/logutil/log_level.go generated vendored Normal file
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// Copyright 2019 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 logutil
import (
"go.uber.org/zap/zapcore"
)
var DefaultLogLevel = "info"
// ConvertToZapLevel converts log level string to zapcore.Level.
func ConvertToZapLevel(lvl string) zapcore.Level {
var level zapcore.Level
if err := level.Set(lvl); err != nil {
panic(err)
}
return level
}

102
vendor/go.etcd.io/etcd/client/pkg/v3/logutil/zap.go generated vendored Normal file
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// Copyright 2019 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 logutil
import (
"sort"
"go.uber.org/zap"
"go.uber.org/zap/zapcore"
)
// CreateDefaultZapLogger creates a logger with default zap configuration
func CreateDefaultZapLogger(level zapcore.Level) (*zap.Logger, error) {
lcfg := DefaultZapLoggerConfig
lcfg.Level = zap.NewAtomicLevelAt(level)
c, err := lcfg.Build()
if err != nil {
return nil, err
}
return c, nil
}
// DefaultZapLoggerConfig defines default zap logger configuration.
var DefaultZapLoggerConfig = zap.Config{
Level: zap.NewAtomicLevelAt(ConvertToZapLevel(DefaultLogLevel)),
Development: false,
Sampling: &zap.SamplingConfig{
Initial: 100,
Thereafter: 100,
},
Encoding: "json",
// copied from "zap.NewProductionEncoderConfig" with some updates
EncoderConfig: zapcore.EncoderConfig{
TimeKey: "ts",
LevelKey: "level",
NameKey: "logger",
CallerKey: "caller",
MessageKey: "msg",
StacktraceKey: "stacktrace",
LineEnding: zapcore.DefaultLineEnding,
EncodeLevel: zapcore.LowercaseLevelEncoder,
EncodeTime: zapcore.ISO8601TimeEncoder,
EncodeDuration: zapcore.StringDurationEncoder,
EncodeCaller: zapcore.ShortCallerEncoder,
},
// Use "/dev/null" to discard all
OutputPaths: []string{"stderr"},
ErrorOutputPaths: []string{"stderr"},
}
// MergeOutputPaths merges logging output paths, resolving conflicts.
func MergeOutputPaths(cfg zap.Config) zap.Config {
outputs := make(map[string]struct{})
for _, v := range cfg.OutputPaths {
outputs[v] = struct{}{}
}
outputSlice := make([]string, 0)
if _, ok := outputs["/dev/null"]; ok {
// "/dev/null" to discard all
outputSlice = []string{"/dev/null"}
} else {
for k := range outputs {
outputSlice = append(outputSlice, k)
}
}
cfg.OutputPaths = outputSlice
sort.Strings(cfg.OutputPaths)
errOutputs := make(map[string]struct{})
for _, v := range cfg.ErrorOutputPaths {
errOutputs[v] = struct{}{}
}
errOutputSlice := make([]string, 0)
if _, ok := errOutputs["/dev/null"]; ok {
// "/dev/null" to discard all
errOutputSlice = []string{"/dev/null"}
} else {
for k := range errOutputs {
errOutputSlice = append(errOutputSlice, k)
}
}
cfg.ErrorOutputPaths = errOutputSlice
sort.Strings(cfg.ErrorOutputPaths)
return cfg
}

93
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// Copyright 2018 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.
//go:build !windows
// +build !windows
package logutil
import (
"bytes"
"encoding/json"
"fmt"
"io"
"os"
"path/filepath"
"go.etcd.io/etcd/client/pkg/v3/systemd"
"github.com/coreos/go-systemd/v22/journal"
"go.uber.org/zap/zapcore"
)
// NewJournalWriter wraps "io.Writer" to redirect log output
// to the local systemd journal. If journald send fails, it fails
// back to writing to the original writer.
// The decode overhead is only <30µs per write.
// Reference: https://github.com/coreos/pkg/blob/master/capnslog/journald_formatter.go
func NewJournalWriter(wr io.Writer) (io.Writer, error) {
return &journalWriter{Writer: wr}, systemd.DialJournal()
}
type journalWriter struct {
io.Writer
}
// WARN: assume that etcd uses default field names in zap encoder config
// make sure to keep this up-to-date!
type logLine struct {
Level string `json:"level"`
Caller string `json:"caller"`
}
func (w *journalWriter) Write(p []byte) (int, error) {
line := &logLine{}
if err := json.NewDecoder(bytes.NewReader(p)).Decode(line); err != nil {
return 0, err
}
var pri journal.Priority
switch line.Level {
case zapcore.DebugLevel.String():
pri = journal.PriDebug
case zapcore.InfoLevel.String():
pri = journal.PriInfo
case zapcore.WarnLevel.String():
pri = journal.PriWarning
case zapcore.ErrorLevel.String():
pri = journal.PriErr
case zapcore.DPanicLevel.String():
pri = journal.PriCrit
case zapcore.PanicLevel.String():
pri = journal.PriCrit
case zapcore.FatalLevel.String():
pri = journal.PriCrit
default:
panic(fmt.Errorf("unknown log level: %q", line.Level))
}
err := journal.Send(string(p), pri, map[string]string{
"PACKAGE": filepath.Dir(line.Caller),
"SYSLOG_IDENTIFIER": filepath.Base(os.Args[0]),
})
if err != nil {
// "journal" also falls back to stderr
// "fmt.Fprintln(os.Stderr, s)"
return w.Writer.Write(p)
}
return 0, nil
}

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vendor/go.etcd.io/etcd/client/pkg/v3/systemd/doc.go generated vendored Normal file
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// Copyright 2018 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 systemd provides utility functions for systemd.
package systemd

29
vendor/go.etcd.io/etcd/client/pkg/v3/systemd/journal.go generated vendored Normal file
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// Copyright 2018 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 systemd
import "net"
// DialJournal returns no error if the process can dial journal socket.
// Returns an error if dial failed, which indicates journald is not available
// (e.g. run embedded etcd as docker daemon).
// Reference: https://github.com/coreos/go-systemd/blob/master/journal/journal.go.
func DialJournal() error {
conn, err := net.Dial("unixgram", "/run/systemd/journal/socket")
if conn != nil {
defer conn.Close()
}
return err
}

56
vendor/go.etcd.io/etcd/client/pkg/v3/tlsutil/cipher_suites.go generated vendored Normal file
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// Copyright 2018 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 tlsutil
import (
"crypto/tls"
"fmt"
)
// GetCipherSuite returns the corresponding cipher suite,
// and boolean value if it is supported.
func GetCipherSuite(s string) (uint16, bool) {
for _, c := range tls.CipherSuites() {
if s == c.Name {
return c.ID, true
}
}
for _, c := range tls.InsecureCipherSuites() {
if s == c.Name {
return c.ID, true
}
}
switch s {
case "TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305":
return tls.TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256, true
case "TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305":
return tls.TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256, true
}
return 0, false
}
// GetCipherSuites returns list of corresponding cipher suite IDs.
func GetCipherSuites(ss []string) ([]uint16, error) {
cs := make([]uint16, len(ss))
for i, s := range ss {
var ok bool
cs[i], ok = GetCipherSuite(s)
if !ok {
return nil, fmt.Errorf("unexpected TLS cipher suite %q", s)
}
}
return cs, nil
}

16
vendor/go.etcd.io/etcd/client/pkg/v3/tlsutil/doc.go generated vendored Normal file
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// Copyright 2016 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 tlsutil provides utility functions for handling TLS.
package tlsutil

73
vendor/go.etcd.io/etcd/client/pkg/v3/tlsutil/tlsutil.go generated vendored Normal file
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// Copyright 2016 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 tlsutil
import (
"crypto/tls"
"crypto/x509"
"encoding/pem"
"io/ioutil"
)
// NewCertPool creates x509 certPool with provided CA files.
func NewCertPool(CAFiles []string) (*x509.CertPool, error) {
certPool := x509.NewCertPool()
for _, CAFile := range CAFiles {
pemByte, err := ioutil.ReadFile(CAFile)
if err != nil {
return nil, err
}
for {
var block *pem.Block
block, pemByte = pem.Decode(pemByte)
if block == nil {
break
}
cert, err := x509.ParseCertificate(block.Bytes)
if err != nil {
return nil, err
}
certPool.AddCert(cert)
}
}
return certPool, nil
}
// NewCert generates TLS cert by using the given cert,key and parse function.
func NewCert(certfile, keyfile string, parseFunc func([]byte, []byte) (tls.Certificate, error)) (*tls.Certificate, error) {
cert, err := ioutil.ReadFile(certfile)
if err != nil {
return nil, err
}
key, err := ioutil.ReadFile(keyfile)
if err != nil {
return nil, err
}
if parseFunc == nil {
parseFunc = tls.X509KeyPair
}
tlsCert, err := parseFunc(cert, key)
if err != nil {
return nil, err
}
return &tlsCert, nil
}

17
vendor/go.etcd.io/etcd/client/pkg/v3/transport/doc.go generated vendored Normal file
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// Copyright 2015 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 transport implements various HTTP transport utilities based on Go
// net package.
package transport

121
vendor/go.etcd.io/etcd/client/pkg/v3/transport/keepalive_listener.go generated vendored Normal file
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// Copyright 2015 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 transport
import (
"crypto/tls"
"fmt"
"net"
"time"
)
// NewKeepAliveListener returns a listener that listens on the given address.
// Be careful when wrap around KeepAliveListener with another Listener if TLSInfo is not nil.
// Some pkgs (like go/http) might expect Listener to return TLSConn type to start TLS handshake.
// http://tldp.org/HOWTO/TCP-Keepalive-HOWTO/overview.html
//
// Note(ahrtr):
// only `net.TCPConn` supports `SetKeepAlive` and `SetKeepAlivePeriod`
// by default, so if you want to wrap multiple layers of net.Listener,
// the `keepaliveListener` should be the one which is closest to the
// original `net.Listener` implementation, namely `TCPListener`.
func NewKeepAliveListener(l net.Listener, scheme string, tlscfg *tls.Config) (net.Listener, error) {
kal := &keepaliveListener{
Listener: l,
}
if scheme == "https" {
if tlscfg == nil {
return nil, fmt.Errorf("cannot listen on TLS for given listener: KeyFile and CertFile are not presented")
}
return newTLSKeepaliveListener(kal, tlscfg), nil
}
return kal, nil
}
type keepaliveListener struct{ net.Listener }
func (kln *keepaliveListener) Accept() (net.Conn, error) {
c, err := kln.Listener.Accept()
if err != nil {
return nil, err
}
kac, err := createKeepaliveConn(c)
if err != nil {
return nil, fmt.Errorf("create keepalive connection failed, %w", err)
}
// detection time: tcp_keepalive_time + tcp_keepalive_probes + tcp_keepalive_intvl
// default on linux: 30 + 8 * 30
// default on osx: 30 + 8 * 75
if err := kac.SetKeepAlive(true); err != nil {
return nil, fmt.Errorf("SetKeepAlive failed, %w", err)
}
if err := kac.SetKeepAlivePeriod(30 * time.Second); err != nil {
return nil, fmt.Errorf("SetKeepAlivePeriod failed, %w", err)
}
return kac, nil
}
func createKeepaliveConn(c net.Conn) (*keepAliveConn, error) {
tcpc, ok := c.(*net.TCPConn)
if !ok {
return nil, ErrNotTCP
}
return &keepAliveConn{tcpc}, nil
}
type keepAliveConn struct {
*net.TCPConn
}
// SetKeepAlive sets keepalive
func (l *keepAliveConn) SetKeepAlive(doKeepAlive bool) error {
return l.TCPConn.SetKeepAlive(doKeepAlive)
}
// SetKeepAlivePeriod sets keepalive period
func (l *keepAliveConn) SetKeepAlivePeriod(d time.Duration) error {
return l.TCPConn.SetKeepAlivePeriod(d)
}
// A tlsKeepaliveListener implements a network listener (net.Listener) for TLS connections.
type tlsKeepaliveListener struct {
net.Listener
config *tls.Config
}
// Accept waits for and returns the next incoming TLS connection.
// The returned connection c is a *tls.Conn.
func (l *tlsKeepaliveListener) Accept() (c net.Conn, err error) {
c, err = l.Listener.Accept()
if err != nil {
return
}
c = tls.Server(c, l.config)
return c, nil
}
// NewListener creates a Listener which accepts connections from an inner
// Listener and wraps each connection with Server.
// The configuration config must be non-nil and must have
// at least one certificate.
func newTLSKeepaliveListener(inner net.Listener, config *tls.Config) net.Listener {
l := &tlsKeepaliveListener{}
l.Listener = inner
l.config = config
return l
}

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vendor/go.etcd.io/etcd/client/pkg/v3/transport/limit_listen.go generated vendored Normal file
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// Copyright 2013 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 transport provides network utility functions, complementing the more
// common ones in the net package.
package transport
import (
"errors"
"net"
"sync"
"time"
)
var (
ErrNotTCP = errors.New("only tcp connections have keepalive")
)
// LimitListener returns a Listener that accepts at most n simultaneous
// connections from the provided Listener.
func LimitListener(l net.Listener, n int) net.Listener {
return &limitListener{l, make(chan struct{}, n)}
}
type limitListener struct {
net.Listener
sem chan struct{}
}
func (l *limitListener) acquire() { l.sem <- struct{}{} }
func (l *limitListener) release() { <-l.sem }
func (l *limitListener) Accept() (net.Conn, error) {
l.acquire()
c, err := l.Listener.Accept()
if err != nil {
l.release()
return nil, err
}
return &limitListenerConn{Conn: c, release: l.release}, nil
}
type limitListenerConn struct {
net.Conn
releaseOnce sync.Once
release func()
}
func (l *limitListenerConn) Close() error {
err := l.Conn.Close()
l.releaseOnce.Do(l.release)
return err
}
// SetKeepAlive sets keepalive
//
// Deprecated: use (*keepAliveConn) SetKeepAlive instead.
func (l *limitListenerConn) SetKeepAlive(doKeepAlive bool) error {
tcpc, ok := l.Conn.(*net.TCPConn)
if !ok {
return ErrNotTCP
}
return tcpc.SetKeepAlive(doKeepAlive)
}
// SetKeepAlivePeriod sets keepalive period
//
// Deprecated: use (*keepAliveConn) SetKeepAlivePeriod instead.
func (l *limitListenerConn) SetKeepAlivePeriod(d time.Duration) error {
tcpc, ok := l.Conn.(*net.TCPConn)
if !ok {
return ErrNotTCP
}
return tcpc.SetKeepAlivePeriod(d)
}

587
vendor/go.etcd.io/etcd/client/pkg/v3/transport/listener.go generated vendored Normal file
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// Copyright 2015 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 transport
import (
"context"
"crypto/ecdsa"
"crypto/elliptic"
"crypto/rand"
"crypto/tls"
"crypto/x509"
"crypto/x509/pkix"
"encoding/pem"
"errors"
"fmt"
"math/big"
"net"
"os"
"path/filepath"
"strings"
"time"
"go.etcd.io/etcd/client/pkg/v3/fileutil"
"go.etcd.io/etcd/client/pkg/v3/tlsutil"
"go.uber.org/zap"
)
// NewListener creates a new listner.
func NewListener(addr, scheme string, tlsinfo *TLSInfo) (l net.Listener, err error) {
return newListener(addr, scheme, WithTLSInfo(tlsinfo))
}
// NewListenerWithOpts creates a new listener which accpets listener options.
func NewListenerWithOpts(addr, scheme string, opts ...ListenerOption) (net.Listener, error) {
return newListener(addr, scheme, opts...)
}
func newListener(addr, scheme string, opts ...ListenerOption) (net.Listener, error) {
if scheme == "unix" || scheme == "unixs" {
// unix sockets via unix://laddr
return NewUnixListener(addr)
}
lnOpts := newListenOpts(opts...)
switch {
case lnOpts.IsSocketOpts():
// new ListenConfig with socket options.
config, err := newListenConfig(lnOpts.socketOpts)
if err != nil {
return nil, err
}
lnOpts.ListenConfig = config
// check for timeout
fallthrough
case lnOpts.IsTimeout(), lnOpts.IsSocketOpts():
// timeout listener with socket options.
ln, err := newKeepAliveListener(&lnOpts.ListenConfig, addr)
if err != nil {
return nil, err
}
lnOpts.Listener = &rwTimeoutListener{
Listener: ln,
readTimeout: lnOpts.readTimeout,
writeTimeout: lnOpts.writeTimeout,
}
case lnOpts.IsTimeout():
ln, err := newKeepAliveListener(nil, addr)
if err != nil {
return nil, err
}
lnOpts.Listener = &rwTimeoutListener{
Listener: ln,
readTimeout: lnOpts.readTimeout,
writeTimeout: lnOpts.writeTimeout,
}
default:
ln, err := newKeepAliveListener(nil, addr)
if err != nil {
return nil, err
}
lnOpts.Listener = ln
}
// only skip if not passing TLSInfo
if lnOpts.skipTLSInfoCheck && !lnOpts.IsTLS() {
return lnOpts.Listener, nil
}
return wrapTLS(scheme, lnOpts.tlsInfo, lnOpts.Listener)
}
func newKeepAliveListener(cfg *net.ListenConfig, addr string) (ln net.Listener, err error) {
if cfg != nil {
ln, err = cfg.Listen(context.TODO(), "tcp", addr)
} else {
ln, err = net.Listen("tcp", addr)
}
if err != nil {
return
}
return NewKeepAliveListener(ln, "tcp", nil)
}
func wrapTLS(scheme string, tlsinfo *TLSInfo, l net.Listener) (net.Listener, error) {
if scheme != "https" && scheme != "unixs" {
return l, nil
}
if tlsinfo != nil && tlsinfo.SkipClientSANVerify {
return NewTLSListener(l, tlsinfo)
}
return newTLSListener(l, tlsinfo, checkSAN)
}
func newListenConfig(sopts *SocketOpts) (net.ListenConfig, error) {
lc := net.ListenConfig{}
if sopts != nil {
ctls := getControls(sopts)
if len(ctls) > 0 {
lc.Control = ctls.Control
}
}
return lc, nil
}
type TLSInfo struct {
// CertFile is the _server_ cert, it will also be used as a _client_ certificate if ClientCertFile is empty
CertFile string
// KeyFile is the key for the CertFile
KeyFile string
// ClientCertFile is a _client_ cert for initiating connections when ClientCertAuth is defined. If ClientCertAuth
// is true but this value is empty, the CertFile will be used instead.
ClientCertFile string
// ClientKeyFile is the key for the ClientCertFile
ClientKeyFile string
TrustedCAFile string
ClientCertAuth bool
CRLFile string
InsecureSkipVerify bool
SkipClientSANVerify bool
// ServerName ensures the cert matches the given host in case of discovery / virtual hosting
ServerName string
// HandshakeFailure is optionally called when a connection fails to handshake. The
// connection will be closed immediately afterwards.
HandshakeFailure func(*tls.Conn, error)
// CipherSuites is a list of supported cipher suites.
// If empty, Go auto-populates it by default.
// Note that cipher suites are prioritized in the given order.
CipherSuites []uint16
selfCert bool
// parseFunc exists to simplify testing. Typically, parseFunc
// should be left nil. In that case, tls.X509KeyPair will be used.
parseFunc func([]byte, []byte) (tls.Certificate, error)
// AllowedCN is a CN which must be provided by a client.
AllowedCN string
// AllowedHostname is an IP address or hostname that must match the TLS
// certificate provided by a client.
AllowedHostname string
// Logger logs TLS errors.
// If nil, all logs are discarded.
Logger *zap.Logger
// EmptyCN indicates that the cert must have empty CN.
// If true, ClientConfig() will return an error for a cert with non empty CN.
EmptyCN bool
}
func (info TLSInfo) String() string {
return fmt.Sprintf("cert = %s, key = %s, client-cert=%s, client-key=%s, trusted-ca = %s, client-cert-auth = %v, crl-file = %s", info.CertFile, info.KeyFile, info.ClientCertFile, info.ClientKeyFile, info.TrustedCAFile, info.ClientCertAuth, info.CRLFile)
}
func (info TLSInfo) Empty() bool {
return info.CertFile == "" && info.KeyFile == ""
}
func SelfCert(lg *zap.Logger, dirpath string, hosts []string, selfSignedCertValidity uint, additionalUsages ...x509.ExtKeyUsage) (info TLSInfo, err error) {
info.Logger = lg
if selfSignedCertValidity == 0 {
err = fmt.Errorf("selfSignedCertValidity is invalid,it should be greater than 0")
info.Logger.Warn(
"cannot generate cert",
zap.Error(err),
)
return
}
err = fileutil.TouchDirAll(lg, dirpath)
if err != nil {
if info.Logger != nil {
info.Logger.Warn(
"cannot create cert directory",
zap.Error(err),
)
}
return
}
certPath, err := filepath.Abs(filepath.Join(dirpath, "cert.pem"))
if err != nil {
return
}
keyPath, err := filepath.Abs(filepath.Join(dirpath, "key.pem"))
if err != nil {
return
}
_, errcert := os.Stat(certPath)
_, errkey := os.Stat(keyPath)
if errcert == nil && errkey == nil {
info.CertFile = certPath
info.KeyFile = keyPath
info.ClientCertFile = certPath
info.ClientKeyFile = keyPath
info.selfCert = true
return
}
serialNumberLimit := new(big.Int).Lsh(big.NewInt(1), 128)
serialNumber, err := rand.Int(rand.Reader, serialNumberLimit)
if err != nil {
if info.Logger != nil {
info.Logger.Warn(
"cannot generate random number",
zap.Error(err),
)
}
return
}
tmpl := x509.Certificate{
SerialNumber: serialNumber,
Subject: pkix.Name{Organization: []string{"etcd"}},
NotBefore: time.Now(),
NotAfter: time.Now().Add(time.Duration(selfSignedCertValidity) * 365 * (24 * time.Hour)),
KeyUsage: x509.KeyUsageKeyEncipherment | x509.KeyUsageDigitalSignature,
ExtKeyUsage: append([]x509.ExtKeyUsage{x509.ExtKeyUsageServerAuth}, additionalUsages...),
BasicConstraintsValid: true,
}
if info.Logger != nil {
info.Logger.Warn(
"automatically generate certificates",
zap.Time("certificate-validity-bound-not-after", tmpl.NotAfter),
)
}
for _, host := range hosts {
h, _, _ := net.SplitHostPort(host)
if ip := net.ParseIP(h); ip != nil {
tmpl.IPAddresses = append(tmpl.IPAddresses, ip)
} else {
tmpl.DNSNames = append(tmpl.DNSNames, h)
}
}
priv, err := ecdsa.GenerateKey(elliptic.P521(), rand.Reader)
if err != nil {
if info.Logger != nil {
info.Logger.Warn(
"cannot generate ECDSA key",
zap.Error(err),
)
}
return
}
derBytes, err := x509.CreateCertificate(rand.Reader, &tmpl, &tmpl, &priv.PublicKey, priv)
if err != nil {
if info.Logger != nil {
info.Logger.Warn(
"cannot generate x509 certificate",
zap.Error(err),
)
}
return
}
certOut, err := os.Create(certPath)
if err != nil {
info.Logger.Warn(
"cannot cert file",
zap.String("path", certPath),
zap.Error(err),
)
return
}
pem.Encode(certOut, &pem.Block{Type: "CERTIFICATE", Bytes: derBytes})
certOut.Close()
if info.Logger != nil {
info.Logger.Info("created cert file", zap.String("path", certPath))
}
b, err := x509.MarshalECPrivateKey(priv)
if err != nil {
return
}
keyOut, err := os.OpenFile(keyPath, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0600)
if err != nil {
if info.Logger != nil {
info.Logger.Warn(
"cannot key file",
zap.String("path", keyPath),
zap.Error(err),
)
}
return
}
pem.Encode(keyOut, &pem.Block{Type: "EC PRIVATE KEY", Bytes: b})
keyOut.Close()
if info.Logger != nil {
info.Logger.Info("created key file", zap.String("path", keyPath))
}
return SelfCert(lg, dirpath, hosts, selfSignedCertValidity)
}
// baseConfig is called on initial TLS handshake start.
//
// Previously,
// 1. Server has non-empty (*tls.Config).Certificates on client hello
// 2. Server calls (*tls.Config).GetCertificate iff:
// - Server's (*tls.Config).Certificates is not empty, or
// - Client supplies SNI; non-empty (*tls.ClientHelloInfo).ServerName
//
// When (*tls.Config).Certificates is always populated on initial handshake,
// client is expected to provide a valid matching SNI to pass the TLS
// verification, thus trigger server (*tls.Config).GetCertificate to reload
// TLS assets. However, a cert whose SAN field does not include domain names
// but only IP addresses, has empty (*tls.ClientHelloInfo).ServerName, thus
// it was never able to trigger TLS reload on initial handshake; first
// ceritifcate object was being used, never being updated.
//
// Now, (*tls.Config).Certificates is created empty on initial TLS client
// handshake, in order to trigger (*tls.Config).GetCertificate and populate
// rest of the certificates on every new TLS connection, even when client
// SNI is empty (e.g. cert only includes IPs).
func (info TLSInfo) baseConfig() (*tls.Config, error) {
if info.KeyFile == "" || info.CertFile == "" {
return nil, fmt.Errorf("KeyFile and CertFile must both be present[key: %v, cert: %v]", info.KeyFile, info.CertFile)
}
if info.Logger == nil {
info.Logger = zap.NewNop()
}
_, err := tlsutil.NewCert(info.CertFile, info.KeyFile, info.parseFunc)
if err != nil {
return nil, err
}
// Perform prevalidation of client cert and key if either are provided. This makes sure we crash before accepting any connections.
if (info.ClientKeyFile == "") != (info.ClientCertFile == "") {
return nil, fmt.Errorf("ClientKeyFile and ClientCertFile must both be present or both absent: key: %v, cert: %v]", info.ClientKeyFile, info.ClientCertFile)
}
if info.ClientCertFile != "" {
_, err := tlsutil.NewCert(info.ClientCertFile, info.ClientKeyFile, info.parseFunc)
if err != nil {
return nil, err
}
}
cfg := &tls.Config{
MinVersion: tls.VersionTLS12,
ServerName: info.ServerName,
}
if len(info.CipherSuites) > 0 {
cfg.CipherSuites = info.CipherSuites
}
// Client certificates may be verified by either an exact match on the CN,
// or a more general check of the CN and SANs.
var verifyCertificate func(*x509.Certificate) bool
if info.AllowedCN != "" {
if info.AllowedHostname != "" {
return nil, fmt.Errorf("AllowedCN and AllowedHostname are mutually exclusive (cn=%q, hostname=%q)", info.AllowedCN, info.AllowedHostname)
}
verifyCertificate = func(cert *x509.Certificate) bool {
return info.AllowedCN == cert.Subject.CommonName
}
}
if info.AllowedHostname != "" {
verifyCertificate = func(cert *x509.Certificate) bool {
return cert.VerifyHostname(info.AllowedHostname) == nil
}
}
if verifyCertificate != nil {
cfg.VerifyPeerCertificate = func(rawCerts [][]byte, verifiedChains [][]*x509.Certificate) error {
for _, chains := range verifiedChains {
if len(chains) != 0 {
if verifyCertificate(chains[0]) {
return nil
}
}
}
return errors.New("client certificate authentication failed")
}
}
// this only reloads certs when there's a client request
// TODO: support server-side refresh (e.g. inotify, SIGHUP), caching
cfg.GetCertificate = func(clientHello *tls.ClientHelloInfo) (cert *tls.Certificate, err error) {
cert, err = tlsutil.NewCert(info.CertFile, info.KeyFile, info.parseFunc)
if os.IsNotExist(err) {
if info.Logger != nil {
info.Logger.Warn(
"failed to find peer cert files",
zap.String("cert-file", info.CertFile),
zap.String("key-file", info.KeyFile),
zap.Error(err),
)
}
} else if err != nil {
if info.Logger != nil {
info.Logger.Warn(
"failed to create peer certificate",
zap.String("cert-file", info.CertFile),
zap.String("key-file", info.KeyFile),
zap.Error(err),
)
}
}
return cert, err
}
cfg.GetClientCertificate = func(unused *tls.CertificateRequestInfo) (cert *tls.Certificate, err error) {
certfile, keyfile := info.CertFile, info.KeyFile
if info.ClientCertFile != "" {
certfile, keyfile = info.ClientCertFile, info.ClientKeyFile
}
cert, err = tlsutil.NewCert(certfile, keyfile, info.parseFunc)
if os.IsNotExist(err) {
if info.Logger != nil {
info.Logger.Warn(
"failed to find client cert files",
zap.String("cert-file", certfile),
zap.String("key-file", keyfile),
zap.Error(err),
)
}
} else if err != nil {
if info.Logger != nil {
info.Logger.Warn(
"failed to create client certificate",
zap.String("cert-file", certfile),
zap.String("key-file", keyfile),
zap.Error(err),
)
}
}
return cert, err
}
return cfg, nil
}
// cafiles returns a list of CA file paths.
func (info TLSInfo) cafiles() []string {
cs := make([]string, 0)
if info.TrustedCAFile != "" {
cs = append(cs, info.TrustedCAFile)
}
return cs
}
// ServerConfig generates a tls.Config object for use by an HTTP server.
func (info TLSInfo) ServerConfig() (*tls.Config, error) {
cfg, err := info.baseConfig()
if err != nil {
return nil, err
}
if info.Logger == nil {
info.Logger = zap.NewNop()
}
cfg.ClientAuth = tls.NoClientCert
if info.TrustedCAFile != "" || info.ClientCertAuth {
cfg.ClientAuth = tls.RequireAndVerifyClientCert
}
cs := info.cafiles()
if len(cs) > 0 {
info.Logger.Info("Loading cert pool", zap.Strings("cs", cs),
zap.Any("tlsinfo", info))
cp, err := tlsutil.NewCertPool(cs)
if err != nil {
return nil, err
}
cfg.ClientCAs = cp
}
// "h2" NextProtos is necessary for enabling HTTP2 for go's HTTP server
cfg.NextProtos = []string{"h2"}
// go1.13 enables TLS 1.3 by default
// and in TLS 1.3, cipher suites are not configurable
// setting Max TLS version to TLS 1.2 for go 1.13
cfg.MaxVersion = tls.VersionTLS12
return cfg, nil
}
// ClientConfig generates a tls.Config object for use by an HTTP client.
func (info TLSInfo) ClientConfig() (*tls.Config, error) {
var cfg *tls.Config
var err error
if !info.Empty() {
cfg, err = info.baseConfig()
if err != nil {
return nil, err
}
} else {
cfg = &tls.Config{ServerName: info.ServerName}
}
cfg.InsecureSkipVerify = info.InsecureSkipVerify
cs := info.cafiles()
if len(cs) > 0 {
cfg.RootCAs, err = tlsutil.NewCertPool(cs)
if err != nil {
return nil, err
}
}
if info.selfCert {
cfg.InsecureSkipVerify = true
}
if info.EmptyCN {
hasNonEmptyCN := false
cn := ""
_, err := tlsutil.NewCert(info.CertFile, info.KeyFile, func(certPEMBlock []byte, keyPEMBlock []byte) (tls.Certificate, error) {
var block *pem.Block
block, _ = pem.Decode(certPEMBlock)
cert, err := x509.ParseCertificate(block.Bytes)
if err != nil {
return tls.Certificate{}, err
}
if len(cert.Subject.CommonName) != 0 {
hasNonEmptyCN = true
cn = cert.Subject.CommonName
}
return tls.X509KeyPair(certPEMBlock, keyPEMBlock)
})
if err != nil {
return nil, err
}
if hasNonEmptyCN {
return nil, fmt.Errorf("cert has non empty Common Name (%s): %s", cn, info.CertFile)
}
}
// go1.13 enables TLS 1.3 by default
// and in TLS 1.3, cipher suites are not configurable
// setting Max TLS version to TLS 1.2 for go 1.13
cfg.MaxVersion = tls.VersionTLS12
return cfg, nil
}
// IsClosedConnError returns true if the error is from closing listener, cmux.
// copied from golang.org/x/net/http2/http2.go
func IsClosedConnError(err error) bool {
// 'use of closed network connection' (Go <=1.8)
// 'use of closed file or network connection' (Go >1.8, internal/poll.ErrClosing)
// 'mux: listener closed' (cmux.ErrListenerClosed)
return err != nil && strings.Contains(err.Error(), "closed")
}

76
vendor/go.etcd.io/etcd/client/pkg/v3/transport/listener_opts.go generated vendored Normal file
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@ -0,0 +1,76 @@
package transport
import (
"net"
"time"
)
type ListenerOptions struct {
Listener net.Listener
ListenConfig net.ListenConfig
socketOpts *SocketOpts
tlsInfo *TLSInfo
skipTLSInfoCheck bool
writeTimeout time.Duration
readTimeout time.Duration
}
func newListenOpts(opts ...ListenerOption) *ListenerOptions {
lnOpts := &ListenerOptions{}
lnOpts.applyOpts(opts)
return lnOpts
}
func (lo *ListenerOptions) applyOpts(opts []ListenerOption) {
for _, opt := range opts {
opt(lo)
}
}
// IsTimeout returns true if the listener has a read/write timeout defined.
func (lo *ListenerOptions) IsTimeout() bool { return lo.readTimeout != 0 || lo.writeTimeout != 0 }
// IsSocketOpts returns true if the listener options includes socket options.
func (lo *ListenerOptions) IsSocketOpts() bool {
if lo.socketOpts == nil {
return false
}
return lo.socketOpts.ReusePort || lo.socketOpts.ReuseAddress
}
// IsTLS returns true if listner options includes TLSInfo.
func (lo *ListenerOptions) IsTLS() bool {
if lo.tlsInfo == nil {
return false
}
return !lo.tlsInfo.Empty()
}
// ListenerOption are options which can be applied to the listener.
type ListenerOption func(*ListenerOptions)
// WithTimeout allows for a read or write timeout to be applied to the listener.
func WithTimeout(read, write time.Duration) ListenerOption {
return func(lo *ListenerOptions) {
lo.writeTimeout = write
lo.readTimeout = read
}
}
// WithSocketOpts defines socket options that will be applied to the listener.
func WithSocketOpts(s *SocketOpts) ListenerOption {
return func(lo *ListenerOptions) { lo.socketOpts = s }
}
// WithTLSInfo adds TLS credentials to the listener.
func WithTLSInfo(t *TLSInfo) ListenerOption {
return func(lo *ListenerOptions) { lo.tlsInfo = t }
}
// WithSkipTLSInfoCheck when true a transport can be created with an https scheme
// without passing TLSInfo, circumventing not presented error. Skipping this check
// also requires that TLSInfo is not passed.
func WithSkipTLSInfoCheck(skip bool) ListenerOption {
return func(lo *ListenerOptions) { lo.skipTLSInfoCheck = skip }
}

272
vendor/go.etcd.io/etcd/client/pkg/v3/transport/listener_tls.go generated vendored Normal file
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@ -0,0 +1,272 @@
// Copyright 2017 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 transport
import (
"context"
"crypto/tls"
"crypto/x509"
"fmt"
"io/ioutil"
"net"
"strings"
"sync"
)
// tlsListener overrides a TLS listener so it will reject client
// certificates with insufficient SAN credentials or CRL revoked
// certificates.
type tlsListener struct {
net.Listener
connc chan net.Conn
donec chan struct{}
err error
handshakeFailure func(*tls.Conn, error)
check tlsCheckFunc
}
type tlsCheckFunc func(context.Context, *tls.Conn) error
// NewTLSListener handshakes TLS connections and performs optional CRL checking.
func NewTLSListener(l net.Listener, tlsinfo *TLSInfo) (net.Listener, error) {
check := func(context.Context, *tls.Conn) error { return nil }
return newTLSListener(l, tlsinfo, check)
}
func newTLSListener(l net.Listener, tlsinfo *TLSInfo, check tlsCheckFunc) (net.Listener, error) {
if tlsinfo == nil || tlsinfo.Empty() {
l.Close()
return nil, fmt.Errorf("cannot listen on TLS for %s: KeyFile and CertFile are not presented", l.Addr().String())
}
tlscfg, err := tlsinfo.ServerConfig()
if err != nil {
return nil, err
}
hf := tlsinfo.HandshakeFailure
if hf == nil {
hf = func(*tls.Conn, error) {}
}
if len(tlsinfo.CRLFile) > 0 {
prevCheck := check
check = func(ctx context.Context, tlsConn *tls.Conn) error {
if err := prevCheck(ctx, tlsConn); err != nil {
return err
}
st := tlsConn.ConnectionState()
if certs := st.PeerCertificates; len(certs) > 0 {
return checkCRL(tlsinfo.CRLFile, certs)
}
return nil
}
}
tlsl := &tlsListener{
Listener: tls.NewListener(l, tlscfg),
connc: make(chan net.Conn),
donec: make(chan struct{}),
handshakeFailure: hf,
check: check,
}
go tlsl.acceptLoop()
return tlsl, nil
}
func (l *tlsListener) Accept() (net.Conn, error) {
select {
case conn := <-l.connc:
return conn, nil
case <-l.donec:
return nil, l.err
}
}
func checkSAN(ctx context.Context, tlsConn *tls.Conn) error {
st := tlsConn.ConnectionState()
if certs := st.PeerCertificates; len(certs) > 0 {
addr := tlsConn.RemoteAddr().String()
return checkCertSAN(ctx, certs[0], addr)
}
return nil
}
// acceptLoop launches each TLS handshake in a separate goroutine
// to prevent a hanging TLS connection from blocking other connections.
func (l *tlsListener) acceptLoop() {
var wg sync.WaitGroup
var pendingMu sync.Mutex
pending := make(map[net.Conn]struct{})
ctx, cancel := context.WithCancel(context.Background())
defer func() {
cancel()
pendingMu.Lock()
for c := range pending {
c.Close()
}
pendingMu.Unlock()
wg.Wait()
close(l.donec)
}()
for {
conn, err := l.Listener.Accept()
if err != nil {
l.err = err
return
}
pendingMu.Lock()
pending[conn] = struct{}{}
pendingMu.Unlock()
wg.Add(1)
go func() {
defer func() {
if conn != nil {
conn.Close()
}
wg.Done()
}()
tlsConn := conn.(*tls.Conn)
herr := tlsConn.Handshake()
pendingMu.Lock()
delete(pending, conn)
pendingMu.Unlock()
if herr != nil {
l.handshakeFailure(tlsConn, herr)
return
}
if err := l.check(ctx, tlsConn); err != nil {
l.handshakeFailure(tlsConn, err)
return
}
select {
case l.connc <- tlsConn:
conn = nil
case <-ctx.Done():
}
}()
}
}
func checkCRL(crlPath string, cert []*x509.Certificate) error {
// TODO: cache
crlBytes, err := ioutil.ReadFile(crlPath)
if err != nil {
return err
}
certList, err := x509.ParseCRL(crlBytes)
if err != nil {
return err
}
revokedSerials := make(map[string]struct{})
for _, rc := range certList.TBSCertList.RevokedCertificates {
revokedSerials[string(rc.SerialNumber.Bytes())] = struct{}{}
}
for _, c := range cert {
serial := string(c.SerialNumber.Bytes())
if _, ok := revokedSerials[serial]; ok {
return fmt.Errorf("transport: certificate serial %x revoked", serial)
}
}
return nil
}
func checkCertSAN(ctx context.Context, cert *x509.Certificate, remoteAddr string) error {
if len(cert.IPAddresses) == 0 && len(cert.DNSNames) == 0 {
return nil
}
h, _, herr := net.SplitHostPort(remoteAddr)
if herr != nil {
return herr
}
if len(cert.IPAddresses) > 0 {
cerr := cert.VerifyHostname(h)
if cerr == nil {
return nil
}
if len(cert.DNSNames) == 0 {
return cerr
}
}
if len(cert.DNSNames) > 0 {
ok, err := isHostInDNS(ctx, h, cert.DNSNames)
if ok {
return nil
}
errStr := ""
if err != nil {
errStr = " (" + err.Error() + ")"
}
return fmt.Errorf("tls: %q does not match any of DNSNames %q"+errStr, h, cert.DNSNames)
}
return nil
}
func isHostInDNS(ctx context.Context, host string, dnsNames []string) (ok bool, err error) {
// reverse lookup
wildcards, names := []string{}, []string{}
for _, dns := range dnsNames {
if strings.HasPrefix(dns, "*.") {
wildcards = append(wildcards, dns[1:])
} else {
names = append(names, dns)
}
}
lnames, lerr := net.DefaultResolver.LookupAddr(ctx, host)
for _, name := range lnames {
// strip trailing '.' from PTR record
if name[len(name)-1] == '.' {
name = name[:len(name)-1]
}
for _, wc := range wildcards {
if strings.HasSuffix(name, wc) {
return true, nil
}
}
for _, n := range names {
if n == name {
return true, nil
}
}
}
err = lerr
// forward lookup
for _, dns := range names {
addrs, lerr := net.DefaultResolver.LookupHost(ctx, dns)
if lerr != nil {
err = lerr
continue
}
for _, addr := range addrs {
if addr == host {
return true, nil
}
}
}
return false, err
}
func (l *tlsListener) Close() error {
err := l.Listener.Close()
<-l.donec
return err
}

45
vendor/go.etcd.io/etcd/client/pkg/v3/transport/sockopt.go generated vendored Normal file
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@ -0,0 +1,45 @@
package transport
import (
"syscall"
)
type Controls []func(network, addr string, conn syscall.RawConn) error
func (ctls Controls) Control(network, addr string, conn syscall.RawConn) error {
for _, s := range ctls {
if err := s(network, addr, conn); err != nil {
return err
}
}
return nil
}
type SocketOpts struct {
// ReusePort enables socket option SO_REUSEPORT [1] which allows rebind of
// a port already in use. User should keep in mind that flock can fail
// in which case lock on data file could result in unexpected
// condition. User should take caution to protect against lock race.
// [1] https://man7.org/linux/man-pages/man7/socket.7.html
ReusePort bool
// ReuseAddress enables a socket option SO_REUSEADDR which allows
// binding to an address in `TIME_WAIT` state. Useful to improve MTTR
// in cases where etcd slow to restart due to excessive `TIME_WAIT`.
// [1] https://man7.org/linux/man-pages/man7/socket.7.html
ReuseAddress bool
}
func getControls(sopts *SocketOpts) Controls {
ctls := Controls{}
if sopts.ReuseAddress {
ctls = append(ctls, setReuseAddress)
}
if sopts.ReusePort {
ctls = append(ctls, setReusePort)
}
return ctls
}
func (sopts *SocketOpts) Empty() bool {
return !sopts.ReuseAddress && !sopts.ReusePort
}

35
vendor/go.etcd.io/etcd/client/pkg/v3/transport/sockopt_solaris.go generated vendored Normal file
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@ -0,0 +1,35 @@
// 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.
//go:build solaris
// +build solaris
package transport
import (
"fmt"
"syscall"
"golang.org/x/sys/unix"
)
func setReusePort(network, address string, c syscall.RawConn) error {
return fmt.Errorf("port reuse is not supported on Solaris")
}
func setReuseAddress(network, address string, conn syscall.RawConn) error {
return conn.Control(func(fd uintptr) {
syscall.SetsockoptInt(int(fd), syscall.SOL_SOCKET, unix.SO_REUSEADDR, 1)
})
}

36
vendor/go.etcd.io/etcd/client/pkg/v3/transport/sockopt_unix.go generated vendored Normal file
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@ -0,0 +1,36 @@
// 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.
//go:build !windows && !solaris
// +build !windows,!solaris
package transport
import (
"syscall"
"golang.org/x/sys/unix"
)
func setReusePort(network, address string, conn syscall.RawConn) error {
return conn.Control(func(fd uintptr) {
syscall.SetsockoptInt(int(fd), syscall.SOL_SOCKET, unix.SO_REUSEPORT, 1)
})
}
func setReuseAddress(network, address string, conn syscall.RawConn) error {
return conn.Control(func(fd uintptr) {
syscall.SetsockoptInt(int(fd), syscall.SOL_SOCKET, unix.SO_REUSEADDR, 1)
})
}

19
vendor/go.etcd.io/etcd/client/pkg/v3/transport/sockopt_windows.go generated vendored Normal file
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@ -0,0 +1,19 @@
//go:build windows
// +build windows
package transport
import (
"fmt"
"syscall"
)
func setReusePort(network, address string, c syscall.RawConn) error {
return fmt.Errorf("port reuse is not supported on Windows")
}
// Windows supports SO_REUSEADDR, but it may cause undefined behavior, as
// there is no protection against port hijacking.
func setReuseAddress(network, addr string, conn syscall.RawConn) error {
return fmt.Errorf("address reuse is not supported on Windows")
}

44
vendor/go.etcd.io/etcd/client/pkg/v3/transport/timeout_conn.go generated vendored Normal file
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@ -0,0 +1,44 @@
// Copyright 2015 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 transport
import (
"net"
"time"
)
type timeoutConn struct {
net.Conn
writeTimeout time.Duration
readTimeout time.Duration
}
func (c timeoutConn) Write(b []byte) (n int, err error) {
if c.writeTimeout > 0 {
if err := c.SetWriteDeadline(time.Now().Add(c.writeTimeout)); err != nil {
return 0, err
}
}
return c.Conn.Write(b)
}
func (c timeoutConn) Read(b []byte) (n int, err error) {
if c.readTimeout > 0 {
if err := c.SetReadDeadline(time.Now().Add(c.readTimeout)); err != nil {
return 0, err
}
}
return c.Conn.Read(b)
}

36
vendor/go.etcd.io/etcd/client/pkg/v3/transport/timeout_dialer.go generated vendored Normal file
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// Copyright 2015 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 transport
import (
"net"
"time"
)
type rwTimeoutDialer struct {
wtimeoutd time.Duration
rdtimeoutd time.Duration
net.Dialer
}
func (d *rwTimeoutDialer) Dial(network, address string) (net.Conn, error) {
conn, err := d.Dialer.Dial(network, address)
tconn := &timeoutConn{
readTimeout: d.rdtimeoutd,
writeTimeout: d.wtimeoutd,
Conn: conn,
}
return tconn, err
}

45
vendor/go.etcd.io/etcd/client/pkg/v3/transport/timeout_listener.go generated vendored Normal file
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// Copyright 2015 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 transport
import (
"net"
"time"
)
// NewTimeoutListener returns a listener that listens on the given address.
// If read/write on the accepted connection blocks longer than its time limit,
// it will return timeout error.
func NewTimeoutListener(addr string, scheme string, tlsinfo *TLSInfo, readTimeout, writeTimeout time.Duration) (net.Listener, error) {
return newListener(addr, scheme, WithTimeout(readTimeout, writeTimeout), WithTLSInfo(tlsinfo))
}
type rwTimeoutListener struct {
net.Listener
writeTimeout time.Duration
readTimeout time.Duration
}
func (rwln *rwTimeoutListener) Accept() (net.Conn, error) {
c, err := rwln.Listener.Accept()
if err != nil {
return nil, err
}
return timeoutConn{
Conn: c,
writeTimeout: rwln.writeTimeout,
readTimeout: rwln.readTimeout,
}, nil
}

51
vendor/go.etcd.io/etcd/client/pkg/v3/transport/timeout_transport.go generated vendored Normal file
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// Copyright 2015 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 transport
import (
"net"
"net/http"
"time"
)
// NewTimeoutTransport returns a transport created using the given TLS info.
// If read/write on the created connection blocks longer than its time limit,
// it will return timeout error.
// If read/write timeout is set, transport will not be able to reuse connection.
func NewTimeoutTransport(info TLSInfo, dialtimeoutd, rdtimeoutd, wtimeoutd time.Duration) (*http.Transport, error) {
tr, err := NewTransport(info, dialtimeoutd)
if err != nil {
return nil, err
}
if rdtimeoutd != 0 || wtimeoutd != 0 {
// the timed out connection will timeout soon after it is idle.
// it should not be put back to http transport as an idle connection for future usage.
tr.MaxIdleConnsPerHost = -1
} else {
// allow more idle connections between peers to avoid unnecessary port allocation.
tr.MaxIdleConnsPerHost = 1024
}
tr.Dial = (&rwTimeoutDialer{
Dialer: net.Dialer{
Timeout: dialtimeoutd,
KeepAlive: 30 * time.Second,
},
rdtimeoutd: rdtimeoutd,
wtimeoutd: wtimeoutd,
}).Dial
return tr, nil
}

49
vendor/go.etcd.io/etcd/client/pkg/v3/transport/tls.go generated vendored Normal file
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// Copyright 2016 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 transport
import (
"fmt"
"strings"
"time"
)
// ValidateSecureEndpoints scans the given endpoints against tls info, returning only those
// endpoints that could be validated as secure.
func ValidateSecureEndpoints(tlsInfo TLSInfo, eps []string) ([]string, error) {
t, err := NewTransport(tlsInfo, 5*time.Second)
if err != nil {
return nil, err
}
var errs []string
var endpoints []string
for _, ep := range eps {
if !strings.HasPrefix(ep, "https://") {
errs = append(errs, fmt.Sprintf("%q is insecure", ep))
continue
}
conn, cerr := t.Dial("tcp", ep[len("https://"):])
if cerr != nil {
errs = append(errs, fmt.Sprintf("%q failed to dial (%v)", ep, cerr))
continue
}
conn.Close()
endpoints = append(endpoints, ep)
}
if len(errs) != 0 {
err = fmt.Errorf("%s", strings.Join(errs, ","))
}
return endpoints, err
}

77
vendor/go.etcd.io/etcd/client/pkg/v3/transport/transport.go generated vendored Normal file
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// Copyright 2016 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 transport
import (
"context"
"net"
"net/http"
"strings"
"time"
)
type unixTransport struct{ *http.Transport }
func NewTransport(info TLSInfo, dialtimeoutd time.Duration) (*http.Transport, error) {
cfg, err := info.ClientConfig()
if err != nil {
return nil, err
}
t := &http.Transport{
Proxy: http.ProxyFromEnvironment,
DialContext: (&net.Dialer{
Timeout: dialtimeoutd,
// value taken from http.DefaultTransport
KeepAlive: 30 * time.Second,
}).DialContext,
// value taken from http.DefaultTransport
TLSHandshakeTimeout: 10 * time.Second,
TLSClientConfig: cfg,
}
dialer := &net.Dialer{
Timeout: dialtimeoutd,
KeepAlive: 30 * time.Second,
}
dialContext := func(ctx context.Context, net, addr string) (net.Conn, error) {
return dialer.DialContext(ctx, "unix", addr)
}
tu := &http.Transport{
Proxy: http.ProxyFromEnvironment,
DialContext: dialContext,
TLSHandshakeTimeout: 10 * time.Second,
TLSClientConfig: cfg,
// Cost of reopening connection on sockets is low, and they are mostly used in testing.
// Long living unix-transport connections were leading to 'leak' test flakes.
// Alternativly the returned Transport (t) should override CloseIdleConnections to
// forward it to 'tu' as well.
IdleConnTimeout: time.Microsecond,
}
ut := &unixTransport{tu}
t.RegisterProtocol("unix", ut)
t.RegisterProtocol("unixs", ut)
return t, nil
}
func (urt *unixTransport) RoundTrip(req *http.Request) (*http.Response, error) {
url := *req.URL
req.URL = &url
req.URL.Scheme = strings.Replace(req.URL.Scheme, "unix", "http", 1)
return urt.Transport.RoundTrip(req)
}

40
vendor/go.etcd.io/etcd/client/pkg/v3/transport/unix_listener.go generated vendored Normal file
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// Copyright 2016 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 transport
import (
"net"
"os"
)
type unixListener struct{ net.Listener }
func NewUnixListener(addr string) (net.Listener, error) {
if err := os.Remove(addr); err != nil && !os.IsNotExist(err) {
return nil, err
}
l, err := net.Listen("unix", addr)
if err != nil {
return nil, err
}
return &unixListener{l}, nil
}
func (ul *unixListener) Close() error {
if err := os.Remove(ul.Addr().String()); err != nil && !os.IsNotExist(err) {
return err
}
return ul.Listener.Close()
}

17
vendor/go.etcd.io/etcd/client/pkg/v3/types/doc.go generated vendored Normal file
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// Copyright 2015 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 types declares various data types and implements type-checking
// functions.
package types

39
vendor/go.etcd.io/etcd/client/pkg/v3/types/id.go generated vendored Normal file
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// Copyright 2015 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 types
import "strconv"
// ID represents a generic identifier which is canonically
// stored as a uint64 but is typically represented as a
// base-16 string for input/output
type ID uint64
func (i ID) String() string {
return strconv.FormatUint(uint64(i), 16)
}
// IDFromString attempts to create an ID from a base-16 string.
func IDFromString(s string) (ID, error) {
i, err := strconv.ParseUint(s, 16, 64)
return ID(i), err
}
// IDSlice implements the sort interface
type IDSlice []ID
func (p IDSlice) Len() int { return len(p) }
func (p IDSlice) Less(i, j int) bool { return uint64(p[i]) < uint64(p[j]) }
func (p IDSlice) Swap(i, j int) { p[i], p[j] = p[j], p[i] }

195
vendor/go.etcd.io/etcd/client/pkg/v3/types/set.go generated vendored Normal file
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// Copyright 2015 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 types
import (
"reflect"
"sort"
"sync"
)
type Set interface {
Add(string)
Remove(string)
Contains(string) bool
Equals(Set) bool
Length() int
Values() []string
Copy() Set
Sub(Set) Set
}
func NewUnsafeSet(values ...string) *unsafeSet {
set := &unsafeSet{make(map[string]struct{})}
for _, v := range values {
set.Add(v)
}
return set
}
func NewThreadsafeSet(values ...string) *tsafeSet {
us := NewUnsafeSet(values...)
return &tsafeSet{us, sync.RWMutex{}}
}
type unsafeSet struct {
d map[string]struct{}
}
// Add adds a new value to the set (no-op if the value is already present)
func (us *unsafeSet) Add(value string) {
us.d[value] = struct{}{}
}
// Remove removes the given value from the set
func (us *unsafeSet) Remove(value string) {
delete(us.d, value)
}
// Contains returns whether the set contains the given value
func (us *unsafeSet) Contains(value string) (exists bool) {
_, exists = us.d[value]
return exists
}
// ContainsAll returns whether the set contains all given values
func (us *unsafeSet) ContainsAll(values []string) bool {
for _, s := range values {
if !us.Contains(s) {
return false
}
}
return true
}
// Equals returns whether the contents of two sets are identical
func (us *unsafeSet) Equals(other Set) bool {
v1 := sort.StringSlice(us.Values())
v2 := sort.StringSlice(other.Values())
v1.Sort()
v2.Sort()
return reflect.DeepEqual(v1, v2)
}
// Length returns the number of elements in the set
func (us *unsafeSet) Length() int {
return len(us.d)
}
// Values returns the values of the Set in an unspecified order.
func (us *unsafeSet) Values() (values []string) {
values = make([]string, 0)
for val := range us.d {
values = append(values, val)
}
return values
}
// Copy creates a new Set containing the values of the first
func (us *unsafeSet) Copy() Set {
cp := NewUnsafeSet()
for val := range us.d {
cp.Add(val)
}
return cp
}
// Sub removes all elements in other from the set
func (us *unsafeSet) Sub(other Set) Set {
oValues := other.Values()
result := us.Copy().(*unsafeSet)
for _, val := range oValues {
if _, ok := result.d[val]; !ok {
continue
}
delete(result.d, val)
}
return result
}
type tsafeSet struct {
us *unsafeSet
m sync.RWMutex
}
func (ts *tsafeSet) Add(value string) {
ts.m.Lock()
defer ts.m.Unlock()
ts.us.Add(value)
}
func (ts *tsafeSet) Remove(value string) {
ts.m.Lock()
defer ts.m.Unlock()
ts.us.Remove(value)
}
func (ts *tsafeSet) Contains(value string) (exists bool) {
ts.m.RLock()
defer ts.m.RUnlock()
return ts.us.Contains(value)
}
func (ts *tsafeSet) Equals(other Set) bool {
ts.m.RLock()
defer ts.m.RUnlock()
// If ts and other represent the same variable, avoid calling
// ts.us.Equals(other), to avoid double RLock bug
if _other, ok := other.(*tsafeSet); ok {
if _other == ts {
return true
}
}
return ts.us.Equals(other)
}
func (ts *tsafeSet) Length() int {
ts.m.RLock()
defer ts.m.RUnlock()
return ts.us.Length()
}
func (ts *tsafeSet) Values() (values []string) {
ts.m.RLock()
defer ts.m.RUnlock()
return ts.us.Values()
}
func (ts *tsafeSet) Copy() Set {
ts.m.RLock()
defer ts.m.RUnlock()
usResult := ts.us.Copy().(*unsafeSet)
return &tsafeSet{usResult, sync.RWMutex{}}
}
func (ts *tsafeSet) Sub(other Set) Set {
ts.m.RLock()
defer ts.m.RUnlock()
// If ts and other represent the same variable, avoid calling
// ts.us.Sub(other), to avoid double RLock bug
if _other, ok := other.(*tsafeSet); ok {
if _other == ts {
usResult := NewUnsafeSet()
return &tsafeSet{usResult, sync.RWMutex{}}
}
}
usResult := ts.us.Sub(other).(*unsafeSet)
return &tsafeSet{usResult, sync.RWMutex{}}
}

22
vendor/go.etcd.io/etcd/client/pkg/v3/types/slice.go generated vendored Normal file
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// Copyright 2015 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 types
// Uint64Slice implements sort interface
type Uint64Slice []uint64
func (p Uint64Slice) Len() int { return len(p) }
func (p Uint64Slice) Less(i, j int) bool { return p[i] < p[j] }
func (p Uint64Slice) Swap(i, j int) { p[i], p[j] = p[j], p[i] }

82
vendor/go.etcd.io/etcd/client/pkg/v3/types/urls.go generated vendored Normal file
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// Copyright 2015 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 types
import (
"errors"
"fmt"
"net"
"net/url"
"sort"
"strings"
)
type URLs []url.URL
func NewURLs(strs []string) (URLs, error) {
all := make([]url.URL, len(strs))
if len(all) == 0 {
return nil, errors.New("no valid URLs given")
}
for i, in := range strs {
in = strings.TrimSpace(in)
u, err := url.Parse(in)
if err != nil {
return nil, err
}
if u.Scheme != "http" && u.Scheme != "https" && u.Scheme != "unix" && u.Scheme != "unixs" {
return nil, fmt.Errorf("URL scheme must be http, https, unix, or unixs: %s", in)
}
if _, _, err := net.SplitHostPort(u.Host); err != nil {
return nil, fmt.Errorf(`URL address does not have the form "host:port": %s`, in)
}
if u.Path != "" {
return nil, fmt.Errorf("URL must not contain a path: %s", in)
}
all[i] = *u
}
us := URLs(all)
us.Sort()
return us, nil
}
func MustNewURLs(strs []string) URLs {
urls, err := NewURLs(strs)
if err != nil {
panic(err)
}
return urls
}
func (us URLs) String() string {
return strings.Join(us.StringSlice(), ",")
}
func (us *URLs) Sort() {
sort.Sort(us)
}
func (us URLs) Len() int { return len(us) }
func (us URLs) Less(i, j int) bool { return us[i].String() < us[j].String() }
func (us URLs) Swap(i, j int) { us[i], us[j] = us[j], us[i] }
func (us URLs) StringSlice() []string {
out := make([]string, len(us))
for i := range us {
out[i] = us[i].String()
}
return out
}

107
vendor/go.etcd.io/etcd/client/pkg/v3/types/urlsmap.go generated vendored Normal file
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// Copyright 2015 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 types
import (
"fmt"
"sort"
"strings"
)
// URLsMap is a map from a name to its URLs.
type URLsMap map[string]URLs
// NewURLsMap returns a URLsMap instantiated from the given string,
// which consists of discovery-formatted names-to-URLs, like:
// mach0=http://1.1.1.1:2380,mach0=http://2.2.2.2::2380,mach1=http://3.3.3.3:2380,mach2=http://4.4.4.4:2380
func NewURLsMap(s string) (URLsMap, error) {
m := parse(s)
cl := URLsMap{}
for name, urls := range m {
us, err := NewURLs(urls)
if err != nil {
return nil, err
}
cl[name] = us
}
return cl, nil
}
// NewURLsMapFromStringMap takes a map of strings and returns a URLsMap. The
// string values in the map can be multiple values separated by the sep string.
func NewURLsMapFromStringMap(m map[string]string, sep string) (URLsMap, error) {
var err error
um := URLsMap{}
for k, v := range m {
um[k], err = NewURLs(strings.Split(v, sep))
if err != nil {
return nil, err
}
}
return um, nil
}
// String turns URLsMap into discovery-formatted name-to-URLs sorted by name.
func (c URLsMap) String() string {
var pairs []string
for name, urls := range c {
for _, url := range urls {
pairs = append(pairs, fmt.Sprintf("%s=%s", name, url.String()))
}
}
sort.Strings(pairs)
return strings.Join(pairs, ",")
}
// URLs returns a list of all URLs.
// The returned list is sorted in ascending lexicographical order.
func (c URLsMap) URLs() []string {
var urls []string
for _, us := range c {
for _, u := range us {
urls = append(urls, u.String())
}
}
sort.Strings(urls)
return urls
}
// Len returns the size of URLsMap.
func (c URLsMap) Len() int {
return len(c)
}
// parse parses the given string and returns a map listing the values specified for each key.
func parse(s string) map[string][]string {
m := make(map[string][]string)
for s != "" {
key := s
if i := strings.IndexAny(key, ","); i >= 0 {
key, s = key[:i], key[i+1:]
} else {
s = ""
}
if key == "" {
continue
}
value := ""
if i := strings.Index(key, "="); i >= 0 {
key, value = key[:i], key[i+1:]
}
m[key] = append(m[key], value)
}
return m
}