Commit 393fabab authored by Darren Shepherd's avatar Darren Shepherd Committed by Erik Wilson

Delete additional third_party

parent e7940ec4
package(default_visibility = ["//visibility:public"])
licenses(["notice"])
filegroup(
name = "package-srcs",
srcs = glob(
["**"],
exclude = [
"etcd*/**",
"etcd*.tar.gz",
],
),
visibility = ["//visibility:private"],
)
filegroup(
name = "all-srcs",
srcs = [
":package-srcs",
"//third_party/forked/etcd221/pkg/fileutil:all-srcs",
"//third_party/forked/etcd221/wal:all-srcs",
"//third_party/forked/etcd237/pkg/fileutil:all-srcs",
"//third_party/forked/etcd237/wal:all-srcs",
"//third_party/forked/godep:all-srcs",
"//third_party/forked/golang/expansion:all-srcs",
"//third_party/forked/golang/reflect:all-srcs",
"//third_party/forked/golang/template:all-srcs",
"//third_party/forked/gonum/graph:all-srcs",
"//third_party/go-srcimporter:all-srcs",
],
tags = ["automanaged"],
)
# See the OWNERS docs at https://go.k8s.io/owners
reviewers:
- lavalamp
- smarterclayton
- thockin
approvers:
- lavalamp
- smarterclayton
- thockin
exports_files(["etcd"])
Forked from etcd 2.2 release branch to support migration from 3.0 WAL to 2.2 WAL format
package(default_visibility = ["//visibility:public"])
licenses(["notice"])
load(
"@io_bazel_rules_go//go:def.bzl",
"go_library",
"go_test",
)
go_test(
name = "go_default_test",
srcs = [
"fileutil_test.go",
"lock_test.go",
"preallocate_test.go",
"purge_test.go",
],
embed = [":go_default_library"],
)
go_library(
name = "go_default_library",
srcs = [
"fileutil.go",
"lock_plan9.go",
"lock_solaris.go",
"lock_unix.go",
"lock_windows.go",
"perallocate_unsupported.go",
"preallocate.go",
"purge.go",
],
importpath = "k8s.io/kubernetes/third_party/forked/etcd221/pkg/fileutil",
deps = [
"//vendor/github.com/coreos/pkg/capnslog:go_default_library",
],
)
filegroup(
name = "package-srcs",
srcs = glob(["**"]),
tags = ["automanaged"],
visibility = ["//visibility:private"],
)
filegroup(
name = "all-srcs",
srcs = [":package-srcs"],
tags = ["automanaged"],
)
// Copyright 2015 CoreOS, Inc.
//
// 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/ioutil"
"os"
"path"
"sort"
"github.com/coreos/pkg/capnslog"
)
const (
privateFileMode = 0600
)
var (
plog = capnslog.NewPackageLogger("github.com/coreos/etcd/pkg", "fileutil")
)
// 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 := path.Join(dir, ".touch")
if err := ioutil.WriteFile(f, []byte(""), privateFileMode); err != nil {
return err
}
return os.Remove(f)
}
// ReadDir returns the filenames in the given directory in sorted order.
func ReadDir(dirpath string) ([]string, error) {
dir, err := os.Open(dirpath)
if err != nil {
return nil, err
}
defer dir.Close()
names, err := dir.Readdirnames(-1)
if err != nil {
return nil, err
}
sort.Strings(names)
return names, nil
}
// Copyright 2015 CoreOS, Inc.
//
// 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/ioutil"
"os"
"path/filepath"
"reflect"
"testing"
)
func TestIsDirWriteable(t *testing.T) {
tmpdir, err := ioutil.TempDir("", "")
if err != nil {
t.Fatalf("unexpected ioutil.TempDir error: %v", err)
}
defer os.RemoveAll(tmpdir)
if err := IsDirWriteable(tmpdir); err != nil {
t.Fatalf("unexpected IsDirWriteable error: %v", err)
}
if err := os.Chmod(tmpdir, 0444); err != nil {
t.Fatalf("unexpected os.Chmod error: %v", err)
}
if err := IsDirWriteable(tmpdir); err == nil {
t.Fatalf("expected IsDirWriteable to error")
}
}
func TestReadDir(t *testing.T) {
tmpdir, err := ioutil.TempDir("", "")
defer os.RemoveAll(tmpdir)
if err != nil {
t.Fatalf("unexpected ioutil.TempDir error: %v", err)
}
files := []string{"def", "abc", "xyz", "ghi"}
for _, f := range files {
var fh *os.File
fh, err = os.Create(filepath.Join(tmpdir, f))
if err != nil {
t.Fatalf("error creating file: %v", err)
}
if err := fh.Close(); err != nil {
t.Fatalf("error closing file: %v", err)
}
}
fs, err := ReadDir(tmpdir)
if err != nil {
t.Fatalf("error calling ReadDir: %v", err)
}
wfs := []string{"abc", "def", "ghi", "xyz"}
if !reflect.DeepEqual(fs, wfs) {
t.Fatalf("ReadDir: got %v, want %v", fs, wfs)
}
}
// Copyright 2015 CoreOS, Inc.
//
// 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"
"syscall"
"time"
)
var (
ErrLocked = errors.New("file already locked")
)
type Lock interface {
Name() string
TryLock() error
Lock() error
Unlock() error
Destroy() error
}
type lock struct {
fname string
file *os.File
}
func (l *lock) Name() string {
return l.fname
}
// TryLock acquires exclusivity on the lock without blocking
func (l *lock) TryLock() error {
err := os.Chmod(l.fname, syscall.DMEXCL|0600)
if err != nil {
return err
}
f, err := os.Open(l.fname)
if err != nil {
return ErrLocked
}
l.file = f
return nil
}
// Lock acquires exclusivity on the lock with blocking
func (l *lock) Lock() error {
err := os.Chmod(l.fname, syscall.DMEXCL|0600)
if err != nil {
return err
}
for {
f, err := os.Open(l.fname)
if err == nil {
l.file = f
return nil
}
time.Sleep(10 * time.Millisecond)
}
}
// Unlock unlocks the lock
func (l *lock) Unlock() error {
return l.file.Close()
}
func (l *lock) Destroy() error {
return nil
}
func NewLock(file string) (Lock, error) {
l := &lock{fname: file}
return l, nil
}
// Copyright 2015 CoreOS, Inc.
//
// 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.
// +build solaris
package fileutil
import (
"errors"
"os"
"syscall"
)
var (
ErrLocked = errors.New("file already locked")
)
type Lock interface {
Name() string
TryLock() error
Lock() error
Unlock() error
Destroy() error
}
type lock struct {
fd int
file *os.File
}
func (l *lock) Name() string {
return l.file.Name()
}
// TryLock acquires exclusivity on the lock without blocking
func (l *lock) TryLock() 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
err := syscall.FcntlFlock(uintptr(l.fd), syscall.F_SETLK, &lock)
if err != nil && err == syscall.EAGAIN {
return ErrLocked
}
return err
}
// Lock acquires exclusivity on the lock without blocking
func (l *lock) Lock() error {
var lock syscall.Flock_t
lock.Start = 0
lock.Len = 0
lock.Type = syscall.F_WRLCK
lock.Whence = 0
lock.Pid = 0
return syscall.FcntlFlock(uintptr(l.fd), syscall.F_SETLK, &lock)
}
// Unlock unlocks the lock
func (l *lock) Unlock() error {
var lock syscall.Flock_t
lock.Start = 0
lock.Len = 0
lock.Type = syscall.F_UNLCK
lock.Whence = 0
err := syscall.FcntlFlock(uintptr(l.fd), syscall.F_SETLK, &lock)
if err != nil && err == syscall.EAGAIN {
return ErrLocked
}
return err
}
func (l *lock) Destroy() error {
return l.file.Close()
}
func NewLock(file string) (Lock, error) {
f, err := os.OpenFile(file, os.O_WRONLY, 0600)
if err != nil {
return nil, err
}
l := &lock{int(f.Fd()), f}
return l, nil
}
// Copyright 2015 CoreOS, Inc.
//
// 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/ioutil"
"os"
"testing"
"time"
)
func TestLockAndUnlock(t *testing.T) {
f, err := ioutil.TempFile("", "lock")
if err != nil {
t.Fatal(err)
}
f.Close()
defer func() {
err := os.Remove(f.Name())
if err != nil {
t.Fatal(err)
}
}()
// lock the file
l, err := NewLock(f.Name())
if err != nil {
t.Fatal(err)
}
defer l.Destroy()
err = l.Lock()
if err != nil {
t.Fatal(err)
}
// try lock a locked file
dupl, err := NewLock(f.Name())
if err != nil {
t.Fatal(err)
}
err = dupl.TryLock()
if err != ErrLocked {
t.Errorf("err = %v, want %v", err, ErrLocked)
}
// unlock the file
err = l.Unlock()
if err != nil {
t.Fatal(err)
}
// try lock the unlocked file
err = dupl.TryLock()
if err != nil {
t.Errorf("err = %v, want %v", err, nil)
}
defer dupl.Destroy()
// blocking on locked file
locked := make(chan struct{}, 1)
go func() {
l.Lock()
locked <- struct{}{}
}()
select {
case <-locked:
t.Error("unexpected unblocking")
case <-time.After(10 * time.Millisecond):
}
// unlock
err = dupl.Unlock()
if err != nil {
t.Fatal(err)
}
// the previously blocked routine should be unblocked
select {
case <-locked:
case <-time.After(20 * time.Millisecond):
t.Error("unexpected blocking")
}
}
// Copyright 2015 CoreOS, Inc.
//
// 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.
// +build !windows,!plan9,!solaris
package fileutil
import (
"errors"
"os"
"syscall"
)
var (
ErrLocked = errors.New("file already locked")
)
type Lock interface {
Name() string
TryLock() error
Lock() error
Unlock() error
Destroy() error
}
type lock struct {
fd int
file *os.File
}
func (l *lock) Name() string {
return l.file.Name()
}
// TryLock acquires exclusivity on the lock without blocking
func (l *lock) TryLock() error {
err := syscall.Flock(l.fd, syscall.LOCK_EX|syscall.LOCK_NB)
if err != nil && err == syscall.EWOULDBLOCK {
return ErrLocked
}
return err
}
// Lock acquires exclusivity on the lock without blocking
func (l *lock) Lock() error {
return syscall.Flock(l.fd, syscall.LOCK_EX)
}
// Unlock unlocks the lock
func (l *lock) Unlock() error {
return syscall.Flock(l.fd, syscall.LOCK_UN)
}
func (l *lock) Destroy() error {
return l.file.Close()
}
func NewLock(file string) (Lock, error) {
f, err := os.Open(file)
if err != nil {
return nil, err
}
l := &lock{int(f.Fd()), f}
return l, nil
}
// Copyright 2015 CoreOS, Inc.
//
// 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.
// +build windows
package fileutil
import (
"errors"
"os"
)
var (
ErrLocked = errors.New("file already locked")
)
type Lock interface {
Name() string
TryLock() error
Lock() error
Unlock() error
Destroy() error
}
type lock struct {
fd int
file *os.File
}
func (l *lock) Name() string {
return l.file.Name()
}
// TryLock acquires exclusivity on the lock without blocking
func (l *lock) TryLock() error {
return nil
}
// Lock acquires exclusivity on the lock without blocking
func (l *lock) Lock() error {
return nil
}
// Unlock unlocks the lock
func (l *lock) Unlock() error {
return nil
}
func (l *lock) Destroy() error {
return l.file.Close()
}
func NewLock(file string) (Lock, error) {
f, err := os.Open(file)
if err != nil {
return nil, err
}
l := &lock{int(f.Fd()), f}
return l, nil
}
// Copyright 2015 CoreOS, Inc.
//
// 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.
// +build !linux
package fileutil
import "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 int) error {
return nil
}
// Copyright 2015 CoreOS, Inc.
//
// 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.
// +build linux
package fileutil
import (
"os"
"syscall"
)
// 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 int) error {
// use mode = 1 to keep size
// see FALLOC_FL_KEEP_SIZE
err := syscall.Fallocate(int(f.Fd()), 1, 0, int64(sizeInBytes))
if err != nil {
errno, ok := err.(syscall.Errno)
// treat not support as nil error
if ok && errno == syscall.ENOTSUP {
return nil
}
return err
}
return nil
}
// Copyright 2015 CoreOS, Inc.
//
// 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/ioutil"
"os"
"runtime"
"testing"
)
func TestPreallocate(t *testing.T) {
if runtime.GOOS != "linux" {
t.Skipf("skip testPreallocate, OS = %s", runtime.GOOS)
}
p, err := ioutil.TempDir(os.TempDir(), "preallocateTest")
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(p)
f, err := ioutil.TempFile(p, "")
if err != nil {
t.Fatal(err)
}
size := 64 * 1000
err = Preallocate(f, size)
if err != nil {
t.Fatal(err)
}
stat, err := f.Stat()
if err != nil {
t.Fatal(err)
}
if stat.Size() != 0 {
t.Errorf("size = %d, want %d", stat.Size(), 0)
}
}
// Copyright 2015 CoreOS, Inc.
//
// 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"
"sort"
"strings"
"time"
)
func PurgeFile(dirname string, suffix string, max uint, interval time.Duration, stop <-chan struct{}) <-chan error {
errC := make(chan error, 1)
go func() {
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)
for len(newfnames) > int(max) {
f := path.Join(dirname, newfnames[0])
l, err := NewLock(f)
if err != nil {
errC <- err
return
}
err = l.TryLock()
if err != nil {
break
}
err = os.Remove(f)
if err != nil {
errC <- err
return
}
err = l.Unlock()
if err != nil {
plog.Errorf("error unlocking %s when purging file (%v)", l.Name(), err)
errC <- err
return
}
err = l.Destroy()
if err != nil {
plog.Errorf("error destroying lock %s when purging file (%v)", l.Name(), err)
errC <- err
return
}
plog.Infof("purged file %s successfully", f)
newfnames = newfnames[1:]
}
select {
case <-time.After(interval):
case <-stop:
return
}
}
}()
return errC
}
// Copyright 2015 CoreOS, Inc.
//
// 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/ioutil"
"os"
"path"
"reflect"
"testing"
"time"
)
func TestPurgeFile(t *testing.T) {
dir, err := ioutil.TempDir("", "purgefile")
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(dir)
for i := 0; i < 5; i++ {
_, err = os.Create(path.Join(dir, fmt.Sprintf("%d.test", i)))
if err != nil {
t.Fatal(err)
}
}
stop := make(chan struct{})
errch := PurgeFile(dir, "test", 3, time.Millisecond, stop)
for i := 5; i < 10; i++ {
_, err = os.Create(path.Join(dir, fmt.Sprintf("%d.test", i)))
if err != nil {
t.Fatal(err)
}
time.Sleep(10 * time.Millisecond)
}
fnames, err := ReadDir(dir)
if err != nil {
t.Fatal(err)
}
wnames := []string{"7.test", "8.test", "9.test"}
if !reflect.DeepEqual(fnames, wnames) {
t.Errorf("filenames = %v, want %v", fnames, wnames)
}
select {
case err := <-errch:
t.Errorf("unexpected purge error %v", err)
case <-time.After(time.Millisecond):
}
close(stop)
}
func TestPurgeFileHoldingLock(t *testing.T) {
dir, err := ioutil.TempDir("", "purgefile")
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(dir)
for i := 0; i < 10; i++ {
_, err = os.Create(path.Join(dir, fmt.Sprintf("%d.test", i)))
if err != nil {
t.Fatal(err)
}
}
// create a purge barrier at 5
l, err := NewLock(path.Join(dir, fmt.Sprintf("%d.test", 5)))
err = l.Lock()
if err != nil {
t.Fatal(err)
}
stop := make(chan struct{})
errch := PurgeFile(dir, "test", 3, time.Millisecond, stop)
time.Sleep(20 * time.Millisecond)
fnames, err := ReadDir(dir)
if err != nil {
t.Fatal(err)
}
wnames := []string{"5.test", "6.test", "7.test", "8.test", "9.test"}
if !reflect.DeepEqual(fnames, wnames) {
t.Errorf("filenames = %v, want %v", fnames, wnames)
}
select {
case err := <-errch:
t.Errorf("unexpected purge error %v", err)
case <-time.After(time.Millisecond):
}
// remove the purge barrier
err = l.Unlock()
if err != nil {
t.Fatal(err)
}
err = l.Destroy()
if err != nil {
t.Fatal(err)
}
time.Sleep(20 * time.Millisecond)
fnames, err = ReadDir(dir)
if err != nil {
t.Fatal(err)
}
wnames = []string{"7.test", "8.test", "9.test"}
if !reflect.DeepEqual(fnames, wnames) {
t.Errorf("filenames = %v, want %v", fnames, wnames)
}
select {
case err := <-errch:
t.Errorf("unexpected purge error %v", err)
case <-time.After(time.Millisecond):
}
close(stop)
}
package(default_visibility = ["//visibility:public"])
licenses(["notice"])
load(
"@io_bazel_rules_go//go:def.bzl",
"go_library",
)
go_library(
name = "go_default_library",
srcs = [
"decoder.go",
"doc.go",
"encoder.go",
"metrics.go",
"multi_readcloser.go",
"repair.go",
"util.go",
"wal.go",
],
importpath = "k8s.io/kubernetes/third_party/forked/etcd221/wal",
deps = [
"//third_party/forked/etcd221/pkg/fileutil:go_default_library",
"//vendor/github.com/coreos/etcd/pkg/crc:go_default_library",
"//vendor/github.com/coreos/etcd/pkg/pbutil:go_default_library",
"//vendor/github.com/coreos/etcd/raft:go_default_library",
"//vendor/github.com/coreos/etcd/raft/raftpb:go_default_library",
"//vendor/github.com/coreos/etcd/wal/walpb:go_default_library",
"//vendor/github.com/coreos/pkg/capnslog:go_default_library",
"//vendor/github.com/prometheus/client_golang/prometheus:go_default_library",
],
)
filegroup(
name = "package-srcs",
srcs = glob(["**"]),
tags = ["automanaged"],
visibility = ["//visibility:private"],
)
filegroup(
name = "all-srcs",
srcs = [
":package-srcs",
"//third_party/forked/etcd221/wal/walpb:all-srcs",
],
tags = ["automanaged"],
)
// Copyright 2015 CoreOS, Inc.
//
// 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 wal
import (
"bufio"
"encoding/binary"
"hash"
"io"
"sync"
"github.com/coreos/etcd/pkg/crc"
"github.com/coreos/etcd/pkg/pbutil"
"github.com/coreos/etcd/raft/raftpb"
"github.com/coreos/etcd/wal/walpb"
)
type decoder struct {
mu sync.Mutex
br *bufio.Reader
c io.Closer
crc hash.Hash32
}
func newDecoder(rc io.ReadCloser) *decoder {
return &decoder{
br: bufio.NewReader(rc),
c: rc,
crc: crc.New(0, crcTable),
}
}
func (d *decoder) decode(rec *walpb.Record) error {
d.mu.Lock()
defer d.mu.Unlock()
rec.Reset()
l, err := readInt64(d.br)
if err != nil {
return err
}
data := make([]byte, l)
if _, err = io.ReadFull(d.br, data); err != nil {
// ReadFull returns io.EOF only if no bytes were read
// the decoder should treat this as an ErrUnexpectedEOF instead.
if err == io.EOF {
err = io.ErrUnexpectedEOF
}
return err
}
if err := rec.Unmarshal(data); err != nil {
return err
}
// skip crc checking if the record type is crcType
if rec.Type == crcType {
return nil
}
d.crc.Write(rec.Data)
return rec.Validate(d.crc.Sum32())
}
func (d *decoder) updateCRC(prevCrc uint32) {
d.crc = crc.New(prevCrc, crcTable)
}
func (d *decoder) lastCRC() uint32 {
return d.crc.Sum32()
}
func (d *decoder) close() error {
return d.c.Close()
}
func mustUnmarshalEntry(d []byte) raftpb.Entry {
var e raftpb.Entry
pbutil.MustUnmarshal(&e, d)
return e
}
func mustUnmarshalState(d []byte) raftpb.HardState {
var s raftpb.HardState
pbutil.MustUnmarshal(&s, d)
return s
}
func readInt64(r io.Reader) (int64, error) {
var n int64
err := binary.Read(r, binary.LittleEndian, &n)
return n, err
}
// Copyright 2015 CoreOS, Inc.
//
// 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 wal provides an implementation of a write ahead log that is used by
etcd.
A WAL is created at a particular directory and is made up of a number of
segmented WAL files. Inside of each file the raft state and entries are appended
to it with the Save method:
metadata := []byte{}
w, err := wal.Create("/var/lib/etcd", metadata)
...
err := w.Save(s, ents)
After saving an raft snapshot to disk, SaveSnapshot method should be called to
record it. So WAL can match with the saved snapshot when restarting.
err := w.SaveSnapshot(walpb.Snapshot{Index: 10, Term: 2})
When a user has finished using a WAL it must be closed:
w.Close()
WAL files are placed inside of the directory in the following format:
$seq-$index.wal
The first WAL file to be created will be 0000000000000000-0000000000000000.wal
indicating an initial sequence of 0 and an initial raft index of 0. The first
entry written to WAL MUST have raft index 0.
WAL will cuts its current wal files if its size exceeds 8MB. This will increment an internal
sequence number and cause a new file to be created. If the last raft index saved
was 0x20 and this is the first time cut has been called on this WAL then the sequence will
increment from 0x0 to 0x1. The new file will be: 0000000000000001-0000000000000021.wal.
If a second cut issues 0x10 entries with incremental index later then the file will be called:
0000000000000002-0000000000000031.wal.
At a later time a WAL can be opened at a particular snapshot. If there is no
snapshot, an empty snapshot should be passed in.
w, err := wal.Open("/var/lib/etcd", walpb.Snapshot{Index: 10, Term: 2})
...
The snapshot must have been written to the WAL.
Additional items cannot be Saved to this WAL until all of the items from the given
snapshot to the end of the WAL are read first:
metadata, state, ents, err := w.ReadAll()
This will give you the metadata, the last raft.State and the slice of
raft.Entry items in the log.
*/
package wal
// Copyright 2015 CoreOS, Inc.
//
// 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 wal
import (
"bufio"
"encoding/binary"
"hash"
"io"
"sync"
"github.com/coreos/etcd/pkg/crc"
"github.com/coreos/etcd/wal/walpb"
)
type encoder struct {
mu sync.Mutex
bw *bufio.Writer
crc hash.Hash32
buf []byte
uint64buf []byte
}
func newEncoder(w io.Writer, prevCrc uint32) *encoder {
return &encoder{
bw: bufio.NewWriter(w),
crc: crc.New(prevCrc, crcTable),
// 1MB buffer
buf: make([]byte, 1024*1024),
uint64buf: make([]byte, 8),
}
}
func (e *encoder) encode(rec *walpb.Record) error {
e.mu.Lock()
defer e.mu.Unlock()
e.crc.Write(rec.Data)
rec.Crc = e.crc.Sum32()
var (
data []byte
err error
n int
)
if rec.Size() > len(e.buf) {
data, err = rec.Marshal()
if err != nil {
return err
}
} else {
n, err = rec.MarshalTo(e.buf)
if err != nil {
return err
}
data = e.buf[:n]
}
if err := writeInt64(e.bw, int64(len(data)), e.uint64buf); err != nil {
return err
}
_, err = e.bw.Write(data)
return err
}
func (e *encoder) flush() error {
e.mu.Lock()
defer e.mu.Unlock()
return e.bw.Flush()
}
func writeInt64(w io.Writer, n int64, buf []byte) error {
// http://golang.org/src/encoding/binary/binary.go
binary.LittleEndian.PutUint64(buf, uint64(n))
_, err := w.Write(buf)
return err
}
// Copyright 2015 CoreOS, Inc.
//
// 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 wal
import "github.com/prometheus/client_golang/prometheus"
var (
syncDurations = prometheus.NewSummary(prometheus.SummaryOpts{
Namespace: "etcd",
Subsystem: "wal",
Name: "fsync_durations_microseconds",
Help: "The latency distributions of fsync called by wal.",
})
lastIndexSaved = prometheus.NewGauge(prometheus.GaugeOpts{
Namespace: "etcd",
Subsystem: "wal",
Name: "last_index_saved",
Help: "The index of the last entry saved by wal.",
})
)
func init() {
prometheus.MustRegister(syncDurations)
prometheus.MustRegister(lastIndexSaved)
}
// Copyright 2015 CoreOS, Inc.
//
// 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 wal
import "io"
type multiReadCloser struct {
closers []io.Closer
reader io.Reader
}
func (mc *multiReadCloser) Close() error {
var err error
for i := range mc.closers {
err = mc.closers[i].Close()
}
return err
}
func (mc *multiReadCloser) Read(p []byte) (int, error) {
return mc.reader.Read(p)
}
func MultiReadCloser(readClosers ...io.ReadCloser) io.ReadCloser {
cs := make([]io.Closer, len(readClosers))
rs := make([]io.Reader, len(readClosers))
for i := range readClosers {
cs[i] = readClosers[i]
rs[i] = readClosers[i]
}
r := io.MultiReader(rs...)
return &multiReadCloser{cs, r}
}
// Copyright 2015 CoreOS, Inc.
//
// 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 wal
import (
"io"
"os"
"path"
"k8s.io/kubernetes/third_party/forked/etcd221/pkg/fileutil"
"github.com/coreos/etcd/wal/walpb"
)
// Repair tries to repair the unexpectedEOF error in the
// last wal file by truncating.
func Repair(dirpath string) bool {
f, err := openLast(dirpath)
if err != nil {
return false
}
defer f.Close()
n := 0
rec := &walpb.Record{}
decoder := newDecoder(f)
defer decoder.close()
for {
err := decoder.decode(rec)
switch err {
case nil:
n += 8 + rec.Size()
// update crc of the decoder when necessary
switch rec.Type {
case crcType:
crc := decoder.crc.Sum32()
// current crc of decoder must match the crc of the record.
// do no need to match 0 crc, since the decoder is a new one at this case.
if crc != 0 && rec.Validate(crc) != nil {
return false
}
decoder.updateCRC(rec.Crc)
}
continue
case io.EOF:
return true
case io.ErrUnexpectedEOF:
plog.Noticef("repairing %v", f.Name())
bf, bferr := os.Create(f.Name() + ".broken")
if bferr != nil {
plog.Errorf("could not repair %v, failed to create backup file", f.Name())
return false
}
defer bf.Close()
if _, err = f.Seek(0, os.SEEK_SET); err != nil {
plog.Errorf("could not repair %v, failed to read file", f.Name())
return false
}
if _, err = io.Copy(bf, f); err != nil {
plog.Errorf("could not repair %v, failed to copy file", f.Name())
return false
}
if err = f.Truncate(int64(n)); err != nil {
plog.Errorf("could not repair %v, failed to truncate file", f.Name())
return false
}
if err = f.Sync(); err != nil {
plog.Errorf("could not repair %v, failed to sync file", f.Name())
return false
}
return true
default:
plog.Errorf("could not repair error (%v)", err)
return false
}
}
}
// openLast opens the last wal file for read and write.
func openLast(dirpath string) (*os.File, error) {
names, err := fileutil.ReadDir(dirpath)
if err != nil {
return nil, err
}
names = checkWalNames(names)
if len(names) == 0 {
return nil, ErrFileNotFound
}
last := path.Join(dirpath, names[len(names)-1])
return os.OpenFile(last, os.O_RDWR, 0)
}
// Copyright 2015 CoreOS, Inc.
//
// 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 wal
import (
"errors"
"fmt"
"strings"
"k8s.io/kubernetes/third_party/forked/etcd221/pkg/fileutil"
)
var (
badWalName = errors.New("bad wal name")
)
func Exist(dirpath string) bool {
names, err := fileutil.ReadDir(dirpath)
if err != nil {
return false
}
return len(names) != 0
}
// searchIndex returns the last array index of names whose raft index section is
// equal to or smaller than the given index.
// The given names MUST be sorted.
func searchIndex(names []string, index uint64) (int, bool) {
for i := len(names) - 1; i >= 0; i-- {
name := names[i]
_, curIndex, err := parseWalName(name)
if err != nil {
plog.Panicf("parse correct name should never fail: %v", err)
}
if index >= curIndex {
return i, true
}
}
return -1, false
}
// names should have been sorted based on sequence number.
// isValidSeq checks whether seq increases continuously.
func isValidSeq(names []string) bool {
var lastSeq uint64
for _, name := range names {
curSeq, _, err := parseWalName(name)
if err != nil {
plog.Panicf("parse correct name should never fail: %v", err)
}
if lastSeq != 0 && lastSeq != curSeq-1 {
return false
}
lastSeq = curSeq
}
return true
}
func checkWalNames(names []string) []string {
wnames := make([]string, 0)
for _, name := range names {
if _, _, err := parseWalName(name); err != nil {
plog.Warningf("ignored file %v in wal", name)
continue
}
wnames = append(wnames, name)
}
return wnames
}
func parseWalName(str string) (seq, index uint64, err error) {
if !strings.HasSuffix(str, ".wal") {
return 0, 0, badWalName
}
_, err = fmt.Sscanf(str, "%016x-%016x.wal", &seq, &index)
return seq, index, err
}
func walName(seq, index uint64) string {
return fmt.Sprintf("%016x-%016x.wal", seq, index)
}
package(default_visibility = ["//visibility:public"])
licenses(["notice"])
load(
"@io_bazel_rules_go//go:def.bzl",
"go_library",
)
go_library(
name = "go_default_library",
srcs = [
"record.go",
"record.pb.go",
],
importpath = "k8s.io/kubernetes/third_party/forked/etcd221/wal/walpb",
deps = ["//vendor/github.com/gogo/protobuf/proto:go_default_library"],
)
filegroup(
name = "package-srcs",
srcs = glob(["**"]),
tags = ["automanaged"],
visibility = ["//visibility:private"],
)
filegroup(
name = "all-srcs",
srcs = [":package-srcs"],
tags = ["automanaged"],
)
// Copyright 2015 CoreOS, Inc.
//
// 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 walpb
import "errors"
var (
ErrCRCMismatch = errors.New("walpb: crc mismatch")
)
func (rec *Record) Validate(crc uint32) error {
if rec.Crc == crc {
return nil
}
rec.Reset()
return ErrCRCMismatch
}
// Code generated by protoc-gen-gogo.
// source: record.proto
// DO NOT EDIT!
/*
Package walpb is a generated protocol buffer package.
It is generated from these files:
record.proto
It has these top-level messages:
Record
Snapshot
*/
package walpb
import proto "github.com/gogo/protobuf/proto"
import math "math"
// discarding unused import gogoproto "github.com/coreos/etcd/Godeps/_workspace/src/gogoproto"
import io "io"
import fmt "fmt"
// Reference imports to suppress errors if they are not otherwise used.
var _ = proto.Marshal
var _ = math.Inf
type Record struct {
Type int64 `protobuf:"varint,1,opt,name=type" json:"type"`
Crc uint32 `protobuf:"varint,2,opt,name=crc" json:"crc"`
Data []byte `protobuf:"bytes,3,opt,name=data" json:"data,omitempty"`
XXX_unrecognized []byte `json:"-"`
}
func (m *Record) Reset() { *m = Record{} }
func (m *Record) String() string { return proto.CompactTextString(m) }
func (*Record) ProtoMessage() {}
type Snapshot struct {
Index uint64 `protobuf:"varint,1,opt,name=index" json:"index"`
Term uint64 `protobuf:"varint,2,opt,name=term" json:"term"`
XXX_unrecognized []byte `json:"-"`
}
func (m *Snapshot) Reset() { *m = Snapshot{} }
func (m *Snapshot) String() string { return proto.CompactTextString(m) }
func (*Snapshot) ProtoMessage() {}
func (m *Record) Marshal() (data []byte, err error) {
size := m.Size()
data = make([]byte, size)
n, err := m.MarshalTo(data)
if err != nil {
return nil, err
}
return data[:n], nil
}
func (m *Record) MarshalTo(data []byte) (int, error) {
var i int
_ = i
var l int
_ = l
data[i] = 0x8
i++
i = encodeVarintRecord(data, i, uint64(m.Type))
data[i] = 0x10
i++
i = encodeVarintRecord(data, i, uint64(m.Crc))
if m.Data != nil {
data[i] = 0x1a
i++
i = encodeVarintRecord(data, i, uint64(len(m.Data)))
i += copy(data[i:], m.Data)
}
if m.XXX_unrecognized != nil {
i += copy(data[i:], m.XXX_unrecognized)
}
return i, nil
}
func (m *Snapshot) Marshal() (data []byte, err error) {
size := m.Size()
data = make([]byte, size)
n, err := m.MarshalTo(data)
if err != nil {
return nil, err
}
return data[:n], nil
}
func (m *Snapshot) MarshalTo(data []byte) (int, error) {
var i int
_ = i
var l int
_ = l
data[i] = 0x8
i++
i = encodeVarintRecord(data, i, uint64(m.Index))
data[i] = 0x10
i++
i = encodeVarintRecord(data, i, uint64(m.Term))
if m.XXX_unrecognized != nil {
i += copy(data[i:], m.XXX_unrecognized)
}
return i, nil
}
func encodeFixed64Record(data []byte, offset int, v uint64) int {
data[offset] = uint8(v)
data[offset+1] = uint8(v >> 8)
data[offset+2] = uint8(v >> 16)
data[offset+3] = uint8(v >> 24)
data[offset+4] = uint8(v >> 32)
data[offset+5] = uint8(v >> 40)
data[offset+6] = uint8(v >> 48)
data[offset+7] = uint8(v >> 56)
return offset + 8
}
func encodeFixed32Record(data []byte, offset int, v uint32) int {
data[offset] = uint8(v)
data[offset+1] = uint8(v >> 8)
data[offset+2] = uint8(v >> 16)
data[offset+3] = uint8(v >> 24)
return offset + 4
}
func encodeVarintRecord(data []byte, offset int, v uint64) int {
for v >= 1<<7 {
data[offset] = uint8(v&0x7f | 0x80)
v >>= 7
offset++
}
data[offset] = uint8(v)
return offset + 1
}
func (m *Record) Size() (n int) {
var l int
_ = l
n += 1 + sovRecord(uint64(m.Type))
n += 1 + sovRecord(uint64(m.Crc))
if m.Data != nil {
l = len(m.Data)
n += 1 + l + sovRecord(uint64(l))
}
if m.XXX_unrecognized != nil {
n += len(m.XXX_unrecognized)
}
return n
}
func (m *Snapshot) Size() (n int) {
var l int
_ = l
n += 1 + sovRecord(uint64(m.Index))
n += 1 + sovRecord(uint64(m.Term))
if m.XXX_unrecognized != nil {
n += len(m.XXX_unrecognized)
}
return n
}
func sovRecord(x uint64) (n int) {
for {
n++
x >>= 7
if x == 0 {
break
}
}
return n
}
func sozRecord(x uint64) (n int) {
return sovRecord(uint64((x << 1) ^ uint64((int64(x) >> 63))))
}
func (m *Record) Unmarshal(data []byte) error {
l := len(data)
iNdEx := 0
for iNdEx < l {
var wire uint64
for shift := uint(0); ; shift += 7 {
if iNdEx >= l {
return io.ErrUnexpectedEOF
}
b := data[iNdEx]
iNdEx++
wire |= (uint64(b) & 0x7F) << shift
if b < 0x80 {
break
}
}
fieldNum := int32(wire >> 3)
wireType := int(wire & 0x7)
switch fieldNum {
case 1:
if wireType != 0 {
return fmt.Errorf("proto: wrong wireType = %d for field Type", wireType)
}
m.Type = 0
for shift := uint(0); ; shift += 7 {
if iNdEx >= l {
return io.ErrUnexpectedEOF
}
b := data[iNdEx]
iNdEx++
m.Type |= (int64(b) & 0x7F) << shift
if b < 0x80 {
break
}
}
case 2:
if wireType != 0 {
return fmt.Errorf("proto: wrong wireType = %d for field Crc", wireType)
}
m.Crc = 0
for shift := uint(0); ; shift += 7 {
if iNdEx >= l {
return io.ErrUnexpectedEOF
}
b := data[iNdEx]
iNdEx++
m.Crc |= (uint32(b) & 0x7F) << shift
if b < 0x80 {
break
}
}
case 3:
if wireType != 2 {
return fmt.Errorf("proto: wrong wireType = %d for field Data", wireType)
}
var byteLen int
for shift := uint(0); ; shift += 7 {
if iNdEx >= l {
return io.ErrUnexpectedEOF
}
b := data[iNdEx]
iNdEx++
byteLen |= (int(b) & 0x7F) << shift
if b < 0x80 {
break
}
}
if byteLen < 0 {
return ErrInvalidLengthRecord
}
postIndex := iNdEx + byteLen
if postIndex > l {
return io.ErrUnexpectedEOF
}
m.Data = append([]byte{}, data[iNdEx:postIndex]...)
iNdEx = postIndex
default:
var sizeOfWire int
for {
sizeOfWire++
wire >>= 7
if wire == 0 {
break
}
}
iNdEx -= sizeOfWire
skippy, err := skipRecord(data[iNdEx:])
if err != nil {
return err
}
if skippy < 0 {
return ErrInvalidLengthRecord
}
if (iNdEx + skippy) > l {
return io.ErrUnexpectedEOF
}
m.XXX_unrecognized = append(m.XXX_unrecognized, data[iNdEx:iNdEx+skippy]...)
iNdEx += skippy
}
}
return nil
}
func (m *Snapshot) Unmarshal(data []byte) error {
l := len(data)
iNdEx := 0
for iNdEx < l {
var wire uint64
for shift := uint(0); ; shift += 7 {
if iNdEx >= l {
return io.ErrUnexpectedEOF
}
b := data[iNdEx]
iNdEx++
wire |= (uint64(b) & 0x7F) << shift
if b < 0x80 {
break
}
}
fieldNum := int32(wire >> 3)
wireType := int(wire & 0x7)
switch fieldNum {
case 1:
if wireType != 0 {
return fmt.Errorf("proto: wrong wireType = %d for field Index", wireType)
}
m.Index = 0
for shift := uint(0); ; shift += 7 {
if iNdEx >= l {
return io.ErrUnexpectedEOF
}
b := data[iNdEx]
iNdEx++
m.Index |= (uint64(b) & 0x7F) << shift
if b < 0x80 {
break
}
}
case 2:
if wireType != 0 {
return fmt.Errorf("proto: wrong wireType = %d for field Term", wireType)
}
m.Term = 0
for shift := uint(0); ; shift += 7 {
if iNdEx >= l {
return io.ErrUnexpectedEOF
}
b := data[iNdEx]
iNdEx++
m.Term |= (uint64(b) & 0x7F) << shift
if b < 0x80 {
break
}
}
default:
var sizeOfWire int
for {
sizeOfWire++
wire >>= 7
if wire == 0 {
break
}
}
iNdEx -= sizeOfWire
skippy, err := skipRecord(data[iNdEx:])
if err != nil {
return err
}
if skippy < 0 {
return ErrInvalidLengthRecord
}
if (iNdEx + skippy) > l {
return io.ErrUnexpectedEOF
}
m.XXX_unrecognized = append(m.XXX_unrecognized, data[iNdEx:iNdEx+skippy]...)
iNdEx += skippy
}
}
return nil
}
func skipRecord(data []byte) (n int, err error) {
l := len(data)
iNdEx := 0
for iNdEx < l {
var wire uint64
for shift := uint(0); ; shift += 7 {
if iNdEx >= l {
return 0, io.ErrUnexpectedEOF
}
b := data[iNdEx]
iNdEx++
wire |= (uint64(b) & 0x7F) << shift
if b < 0x80 {
break
}
}
wireType := int(wire & 0x7)
switch wireType {
case 0:
for {
if iNdEx >= l {
return 0, io.ErrUnexpectedEOF
}
iNdEx++
if data[iNdEx-1] < 0x80 {
break
}
}
return iNdEx, nil
case 1:
iNdEx += 8
return iNdEx, nil
case 2:
var length int
for shift := uint(0); ; shift += 7 {
if iNdEx >= l {
return 0, io.ErrUnexpectedEOF
}
b := data[iNdEx]
iNdEx++
length |= (int(b) & 0x7F) << shift
if b < 0x80 {
break
}
}
iNdEx += length
if length < 0 {
return 0, ErrInvalidLengthRecord
}
return iNdEx, nil
case 3:
for {
var innerWire uint64
var start int = iNdEx
for shift := uint(0); ; shift += 7 {
if iNdEx >= l {
return 0, io.ErrUnexpectedEOF
}
b := data[iNdEx]
iNdEx++
innerWire |= (uint64(b) & 0x7F) << shift
if b < 0x80 {
break
}
}
innerWireType := int(innerWire & 0x7)
if innerWireType == 4 {
break
}
next, err := skipRecord(data[start:])
if err != nil {
return 0, err
}
iNdEx = start + next
}
return iNdEx, nil
case 4:
return iNdEx, nil
case 5:
iNdEx += 4
return iNdEx, nil
default:
return 0, fmt.Errorf("proto: illegal wireType %d", wireType)
}
}
panic("unreachable")
}
var (
ErrInvalidLengthRecord = fmt.Errorf("proto: negative length found during unmarshaling")
)
syntax = "proto2";
package walpb;
import "gogoproto/gogo.proto";
option (gogoproto.marshaler_all) = true;
option (gogoproto.sizer_all) = true;
option (gogoproto.unmarshaler_all) = true;
option (gogoproto.goproto_getters_all) = false;
message Record {
optional int64 type = 1 [(gogoproto.nullable) = false];
optional uint32 crc = 2 [(gogoproto.nullable) = false];
optional bytes data = 3;
}
message Snapshot {
optional uint64 index = 1 [(gogoproto.nullable) = false];
optional uint64 term = 2 [(gogoproto.nullable) = false];
}
Forked from etcd 2.3 release branch to support migration from 3.0 WAL to 2.3 WAL format
package(default_visibility = ["//visibility:public"])
licenses(["notice"])
load(
"@io_bazel_rules_go//go:def.bzl",
"go_library",
"go_test",
)
go_test(
name = "go_default_test",
srcs = [
"fileutil_test.go",
"lock_test.go",
"preallocate_test.go",
"purge_test.go",
],
embed = [":go_default_library"],
)
go_library(
name = "go_default_library",
srcs = [
"fileutil.go",
"lock.go",
"lock_plan9.go",
"lock_solaris.go",
"lock_unix.go",
"lock_windows.go",
"perallocate_unsupported.go",
"preallocate.go",
"purge.go",
"sync.go",
"sync_linux.go",
],
importpath = "k8s.io/kubernetes/third_party/forked/etcd237/pkg/fileutil",
deps = [
"//vendor/github.com/coreos/pkg/capnslog:go_default_library",
],
)
filegroup(
name = "package-srcs",
srcs = glob(["**"]),
tags = ["automanaged"],
visibility = ["//visibility:private"],
)
filegroup(
name = "all-srcs",
srcs = [":package-srcs"],
tags = ["automanaged"],
)
// Copyright 2015 CoreOS, Inc.
//
// 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
import (
"io/ioutil"
"os"
"path"
"sort"
"github.com/coreos/pkg/capnslog"
)
const (
privateFileMode = 0600
// owner can make/remove files inside the directory
privateDirMode = 0700
)
var (
plog = capnslog.NewPackageLogger("github.com/coreos/etcd/pkg", "fileutil")
)
// 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 := path.Join(dir, ".touch")
if err := ioutil.WriteFile(f, []byte(""), privateFileMode); err != nil {
return err
}
return os.Remove(f)
}
// ReadDir returns the filenames in the given directory in sorted order.
func ReadDir(dirpath string) ([]string, error) {
dir, err := os.Open(dirpath)
if err != nil {
return nil, err
}
defer dir.Close()
names, err := dir.Readdirnames(-1)
if err != nil {
return nil, err
}
sort.Strings(names)
return names, nil
}
// 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(dir string) error {
err := os.MkdirAll(dir, privateDirMode)
if err != nil && err != os.ErrExist {
return err
}
return IsDirWriteable(dir)
}
func Exist(name string) bool {
_, err := os.Stat(name)
return err == nil
}
// Copyright 2015 CoreOS, Inc.
//
// 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/ioutil"
"os"
"os/user"
"path/filepath"
"reflect"
"testing"
)
func TestIsDirWriteable(t *testing.T) {
tmpdir, err := ioutil.TempDir("", "")
if err != nil {
t.Fatalf("unexpected ioutil.TempDir error: %v", err)
}
defer os.RemoveAll(tmpdir)
if err = IsDirWriteable(tmpdir); err != nil {
t.Fatalf("unexpected IsDirWriteable error: %v", err)
}
if err = os.Chmod(tmpdir, 0444); err != nil {
t.Fatalf("unexpected os.Chmod error: %v", err)
}
me, err := user.Current()
if err != nil {
// err can be non-nil when cross compiled
// http://stackoverflow.com/questions/20609415/cross-compiling-user-current-not-implemented-on-linux-amd64
t.Skipf("failed to get current user: %v", err)
}
if me.Name == "root" || me.Name == "Administrator" {
// ideally we should check CAP_DAC_OVERRIDE.
// but it does not matter for tests.
t.Skipf("running as a superuser")
}
if err := IsDirWriteable(tmpdir); err == nil {
t.Fatalf("expected IsDirWriteable to error")
}
}
func TestReadDir(t *testing.T) {
tmpdir, err := ioutil.TempDir("", "")
defer os.RemoveAll(tmpdir)
if err != nil {
t.Fatalf("unexpected ioutil.TempDir error: %v", err)
}
files := []string{"def", "abc", "xyz", "ghi"}
for _, f := range files {
var fh *os.File
fh, err = os.Create(filepath.Join(tmpdir, f))
if err != nil {
t.Fatalf("error creating file: %v", err)
}
if err = fh.Close(); err != nil {
t.Fatalf("error closing file: %v", err)
}
}
fs, err := ReadDir(tmpdir)
if err != nil {
t.Fatalf("error calling ReadDir: %v", err)
}
wfs := []string{"abc", "def", "ghi", "xyz"}
if !reflect.DeepEqual(fs, wfs) {
t.Fatalf("ReadDir: got %v, want %v", fs, wfs)
}
}
func TestExist(t *testing.T) {
f, err := ioutil.TempFile(os.TempDir(), "fileutil")
if err != nil {
t.Fatal(err)
}
f.Close()
if g := Exist(f.Name()); g != true {
t.Errorf("exist = %v, want true", g)
}
os.Remove(f.Name())
if g := Exist(f.Name()); g != false {
t.Errorf("exist = %v, want false", g)
}
}
// Copyright 2016 CoreOS, Inc.
//
// 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
type Lock interface {
// Name returns the name of the file.
Name() string
// TryLock acquires exclusivity on the lock without blocking.
TryLock() error
// Lock acquires exclusivity on the lock.
Lock() error
// Unlock unlocks the lock.
Unlock() error
// Destroy should be called after Unlock to clean up
// the resources.
Destroy() error
}
// Copyright 2015 CoreOS, Inc.
//
// 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"
"syscall"
"time"
)
var (
ErrLocked = errors.New("file already locked")
)
type lock struct {
fname string
file *os.File
}
func (l *lock) Name() string {
return l.fname
}
func (l *lock) TryLock() error {
err := os.Chmod(l.fname, syscall.DMEXCL|0600)
if err != nil {
return err
}
f, err := os.Open(l.fname)
if err != nil {
return ErrLocked
}
l.file = f
return nil
}
func (l *lock) Lock() error {
err := os.Chmod(l.fname, syscall.DMEXCL|0600)
if err != nil {
return err
}
for {
f, err := os.Open(l.fname)
if err == nil {
l.file = f
return nil
}
time.Sleep(10 * time.Millisecond)
}
}
func (l *lock) Unlock() error {
return l.file.Close()
}
func (l *lock) Destroy() error {
return nil
}
func NewLock(file string) (Lock, error) {
l := &lock{fname: file}
return l, nil
}
// Copyright 2015 CoreOS, Inc.
//
// 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.
// +build solaris
package fileutil
import (
"errors"
"os"
"syscall"
)
var (
ErrLocked = errors.New("file already locked")
)
type lock struct {
fd int
file *os.File
}
func (l *lock) Name() string {
return l.file.Name()
}
func (l *lock) TryLock() 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
err := syscall.FcntlFlock(uintptr(l.fd), syscall.F_SETLK, &lock)
if err != nil && err == syscall.EAGAIN {
return ErrLocked
}
return err
}
func (l *lock) Lock() error {
var lock syscall.Flock_t
lock.Start = 0
lock.Len = 0
lock.Type = syscall.F_WRLCK
lock.Whence = 0
lock.Pid = 0
return syscall.FcntlFlock(uintptr(l.fd), syscall.F_SETLK, &lock)
}
func (l *lock) Unlock() error {
var lock syscall.Flock_t
lock.Start = 0
lock.Len = 0
lock.Type = syscall.F_UNLCK
lock.Whence = 0
err := syscall.FcntlFlock(uintptr(l.fd), syscall.F_SETLK, &lock)
if err != nil && err == syscall.EAGAIN {
return ErrLocked
}
return err
}
func (l *lock) Destroy() error {
return l.file.Close()
}
func NewLock(file string) (Lock, error) {
f, err := os.OpenFile(file, os.O_WRONLY, 0600)
if err != nil {
return nil, err
}
l := &lock{int(f.Fd()), f}
return l, nil
}
// Copyright 2015 CoreOS, Inc.
//
// 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/ioutil"
"os"
"testing"
"time"
)
func TestLockAndUnlock(t *testing.T) {
f, err := ioutil.TempFile("", "lock")
if err != nil {
t.Fatal(err)
}
f.Close()
defer func() {
err = os.Remove(f.Name())
if err != nil {
t.Fatal(err)
}
}()
// lock the file
l, err := NewLock(f.Name())
if err != nil {
t.Fatal(err)
}
defer l.Destroy()
err = l.Lock()
if err != nil {
t.Fatal(err)
}
// try lock a locked file
dupl, err := NewLock(f.Name())
if err != nil {
t.Fatal(err)
}
err = dupl.TryLock()
if err != ErrLocked {
t.Errorf("err = %v, want %v", err, ErrLocked)
}
// unlock the file
err = l.Unlock()
if err != nil {
t.Fatal(err)
}
// try lock the unlocked file
err = dupl.TryLock()
if err != nil {
t.Errorf("err = %v, want %v", err, nil)
}
defer dupl.Destroy()
// blocking on locked file
locked := make(chan struct{}, 1)
go func() {
l.Lock()
locked <- struct{}{}
}()
select {
case <-locked:
t.Error("unexpected unblocking")
case <-time.After(100 * time.Millisecond):
}
// unlock
err = dupl.Unlock()
if err != nil {
t.Fatal(err)
}
// the previously blocked routine should be unblocked
select {
case <-locked:
case <-time.After(1 * time.Second):
t.Error("unexpected blocking")
}
}
// Copyright 2015 CoreOS, Inc.
//
// 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.
// +build !windows,!plan9,!solaris
package fileutil
import (
"errors"
"os"
"syscall"
)
var (
ErrLocked = errors.New("file already locked")
)
type lock struct {
fd int
file *os.File
}
func (l *lock) Name() string {
return l.file.Name()
}
func (l *lock) TryLock() error {
err := syscall.Flock(l.fd, syscall.LOCK_EX|syscall.LOCK_NB)
if err != nil && err == syscall.EWOULDBLOCK {
return ErrLocked
}
return err
}
func (l *lock) Lock() error {
return syscall.Flock(l.fd, syscall.LOCK_EX)
}
func (l *lock) Unlock() error {
return syscall.Flock(l.fd, syscall.LOCK_UN)
}
func (l *lock) Destroy() error {
return l.file.Close()
}
func NewLock(file string) (Lock, error) {
f, err := os.Open(file)
if err != nil {
return nil, err
}
l := &lock{int(f.Fd()), f}
return l, nil
}
// Copyright 2015 CoreOS, Inc.
//
// 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.
// +build windows
package fileutil
import (
"errors"
"os"
)
var (
ErrLocked = errors.New("file already locked")
)
type lock struct {
fd int
file *os.File
}
func (l *lock) Name() string {
return l.file.Name()
}
func (l *lock) TryLock() error {
return nil
}
func (l *lock) Lock() error {
return nil
}
func (l *lock) Unlock() error {
return nil
}
func (l *lock) Destroy() error {
return l.file.Close()
}
func NewLock(file string) (Lock, error) {
f, err := os.Open(file)
if err != nil {
return nil, err
}
l := &lock{int(f.Fd()), f}
return l, nil
}
// Copyright 2015 CoreOS, Inc.
//
// 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.
// +build !linux
package fileutil
import "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 int) error {
return nil
}
// Copyright 2015 CoreOS, Inc.
//
// 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.
// +build linux
package fileutil
import (
"os"
"syscall"
)
// 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 int) error {
// use mode = 1 to keep size
// see FALLOC_FL_KEEP_SIZE
err := syscall.Fallocate(int(f.Fd()), 1, 0, int64(sizeInBytes))
if err != nil {
errno, ok := err.(syscall.Errno)
// treat not support as nil error
if ok && errno == syscall.ENOTSUP {
return nil
}
return err
}
return nil
}
// Copyright 2015 CoreOS, Inc.
//
// 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/ioutil"
"os"
"runtime"
"testing"
)
func TestPreallocate(t *testing.T) {
if runtime.GOOS != "linux" {
t.Skipf("skip testPreallocate, OS = %s", runtime.GOOS)
}
p, err := ioutil.TempDir(os.TempDir(), "preallocateTest")
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(p)
f, err := ioutil.TempFile(p, "")
if err != nil {
t.Fatal(err)
}
size := 64 * 1000
err = Preallocate(f, size)
if err != nil {
t.Fatal(err)
}
stat, err := f.Stat()
if err != nil {
t.Fatal(err)
}
if stat.Size() != 0 {
t.Errorf("size = %d, want %d", stat.Size(), 0)
}
}
// Copyright 2015 CoreOS, Inc.
//
// 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"
"sort"
"strings"
"time"
)
func PurgeFile(dirname string, suffix string, max uint, interval time.Duration, stop <-chan struct{}) <-chan error {
errC := make(chan error, 1)
go func() {
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)
for len(newfnames) > int(max) {
f := path.Join(dirname, newfnames[0])
l, err := NewLock(f)
if err != nil {
errC <- err
return
}
err = l.TryLock()
if err != nil {
break
}
err = os.Remove(f)
if err != nil {
errC <- err
return
}
err = l.Unlock()
if err != nil {
plog.Errorf("error unlocking %s when purging file (%v)", l.Name(), err)
errC <- err
return
}
err = l.Destroy()
if err != nil {
plog.Errorf("error destroying lock %s when purging file (%v)", l.Name(), err)
errC <- err
return
}
plog.Infof("purged file %s successfully", f)
newfnames = newfnames[1:]
}
select {
case <-time.After(interval):
case <-stop:
return
}
}
}()
return errC
}
// Copyright 2015 CoreOS, Inc.
//
// 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/ioutil"
"os"
"path"
"reflect"
"testing"
"time"
)
func TestPurgeFile(t *testing.T) {
dir, err := ioutil.TempDir("", "purgefile")
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(dir)
for i := 0; i < 5; i++ {
_, err = os.Create(path.Join(dir, fmt.Sprintf("%d.test", i)))
if err != nil {
t.Fatal(err)
}
}
stop := make(chan struct{})
// keep at most 3 most recent files
errch := PurgeFile(dir, "test", 3, time.Millisecond, stop)
// create 5 more files
for i := 5; i < 10; i++ {
_, err = os.Create(path.Join(dir, fmt.Sprintf("%d.test", i)))
if err != nil {
t.Fatal(err)
}
time.Sleep(10 * time.Millisecond)
}
// purge routine should purge 7 out of 10 files and only keep the
// 3 most recent ones.
// wait for purging for at most 100ms.
var fnames []string
for i := 0; i < 10; i++ {
fnames, err = ReadDir(dir)
if err != nil {
t.Fatal(err)
}
if len(fnames) <= 3 {
break
}
time.Sleep(10 * time.Millisecond)
}
wnames := []string{"7.test", "8.test", "9.test"}
if !reflect.DeepEqual(fnames, wnames) {
t.Errorf("filenames = %v, want %v", fnames, wnames)
}
// no error should be reported from purge routine
select {
case err := <-errch:
t.Errorf("unexpected purge error %v", err)
case <-time.After(time.Millisecond):
}
close(stop)
}
func TestPurgeFileHoldingLock(t *testing.T) {
dir, err := ioutil.TempDir("", "purgefile")
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(dir)
for i := 0; i < 10; i++ {
_, err = os.Create(path.Join(dir, fmt.Sprintf("%d.test", i)))
if err != nil {
t.Fatal(err)
}
}
// create a purge barrier at 5
l, err := NewLock(path.Join(dir, fmt.Sprintf("%d.test", 5)))
err = l.Lock()
if err != nil {
t.Fatal(err)
}
stop := make(chan struct{})
errch := PurgeFile(dir, "test", 3, time.Millisecond, stop)
var fnames []string
for i := 0; i < 10; i++ {
fnames, err = ReadDir(dir)
if err != nil {
t.Fatal(err)
}
if len(fnames) <= 5 {
break
}
time.Sleep(10 * time.Millisecond)
}
wnames := []string{"5.test", "6.test", "7.test", "8.test", "9.test"}
if !reflect.DeepEqual(fnames, wnames) {
t.Errorf("filenames = %v, want %v", fnames, wnames)
}
select {
case err = <-errch:
t.Errorf("unexpected purge error %v", err)
case <-time.After(time.Millisecond):
}
// remove the purge barrier
err = l.Unlock()
if err != nil {
t.Fatal(err)
}
err = l.Destroy()
if err != nil {
t.Fatal(err)
}
for i := 0; i < 10; i++ {
fnames, err = ReadDir(dir)
if err != nil {
t.Fatal(err)
}
if len(fnames) <= 3 {
break
}
time.Sleep(10 * time.Millisecond)
}
wnames = []string{"7.test", "8.test", "9.test"}
if !reflect.DeepEqual(fnames, wnames) {
t.Errorf("filenames = %v, want %v", fnames, wnames)
}
select {
case err := <-errch:
t.Errorf("unexpected purge error %v", err)
case <-time.After(time.Millisecond):
}
close(stop)
}
// Copyright 2016 CoreOS, Inc.
//
// 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.
// +build !linux
package fileutil
import "os"
// 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 f.Sync()
}
// Copyright 2016 CoreOS, Inc.
//
// 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.
// +build linux
package fileutil
import (
"os"
"syscall"
)
// 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()))
}
package(default_visibility = ["//visibility:public"])
licenses(["notice"])
load(
"@io_bazel_rules_go//go:def.bzl",
"go_library",
)
go_library(
name = "go_default_library",
srcs = [
"decoder.go",
"doc.go",
"encoder.go",
"metrics.go",
"multi_readcloser.go",
"repair.go",
"util.go",
"wal.go",
],
importpath = "k8s.io/kubernetes/third_party/forked/etcd237/wal",
deps = [
"//third_party/forked/etcd237/pkg/fileutil:go_default_library",
"//vendor/github.com/coreos/etcd/pkg/crc:go_default_library",
"//vendor/github.com/coreos/etcd/pkg/pbutil:go_default_library",
"//vendor/github.com/coreos/etcd/raft/raftpb:go_default_library",
"//vendor/github.com/coreos/etcd/wal/walpb:go_default_library",
"//vendor/github.com/coreos/pkg/capnslog:go_default_library",
"//vendor/github.com/prometheus/client_golang/prometheus:go_default_library",
],
)
filegroup(
name = "package-srcs",
srcs = glob(["**"]),
tags = ["automanaged"],
visibility = ["//visibility:private"],
)
filegroup(
name = "all-srcs",
srcs = [
":package-srcs",
"//third_party/forked/etcd237/wal/walpb:all-srcs",
],
tags = ["automanaged"],
)
// Copyright 2015 CoreOS, Inc.
//
// 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 wal
import (
"bufio"
"encoding/binary"
"hash"
"io"
"sync"
"github.com/coreos/etcd/pkg/crc"
"github.com/coreos/etcd/pkg/pbutil"
"github.com/coreos/etcd/raft/raftpb"
"github.com/coreos/etcd/wal/walpb"
)
type decoder struct {
mu sync.Mutex
br *bufio.Reader
c io.Closer
crc hash.Hash32
}
func newDecoder(rc io.ReadCloser) *decoder {
return &decoder{
br: bufio.NewReader(rc),
c: rc,
crc: crc.New(0, crcTable),
}
}
func (d *decoder) decode(rec *walpb.Record) error {
d.mu.Lock()
defer d.mu.Unlock()
rec.Reset()
l, err := readInt64(d.br)
if err != nil {
return err
}
data := make([]byte, l)
if _, err = io.ReadFull(d.br, data); err != nil {
// ReadFull returns io.EOF only if no bytes were read
// the decoder should treat this as an ErrUnexpectedEOF instead.
if err == io.EOF {
err = io.ErrUnexpectedEOF
}
return err
}
if err := rec.Unmarshal(data); err != nil {
return err
}
// skip crc checking if the record type is crcType
if rec.Type == crcType {
return nil
}
d.crc.Write(rec.Data)
return rec.Validate(d.crc.Sum32())
}
func (d *decoder) updateCRC(prevCrc uint32) {
d.crc = crc.New(prevCrc, crcTable)
}
func (d *decoder) lastCRC() uint32 {
return d.crc.Sum32()
}
func (d *decoder) close() error {
return d.c.Close()
}
func mustUnmarshalEntry(d []byte) raftpb.Entry {
var e raftpb.Entry
pbutil.MustUnmarshal(&e, d)
return e
}
func mustUnmarshalState(d []byte) raftpb.HardState {
var s raftpb.HardState
pbutil.MustUnmarshal(&s, d)
return s
}
func readInt64(r io.Reader) (int64, error) {
var n int64
err := binary.Read(r, binary.LittleEndian, &n)
return n, err
}
// Copyright 2015 CoreOS, Inc.
//
// 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 wal provides an implementation of a write ahead log that is used by
etcd.
A WAL is created at a particular directory and is made up of a number of
segmented WAL files. Inside of each file the raft state and entries are appended
to it with the Save method:
metadata := []byte{}
w, err := wal.Create("/var/lib/etcd", metadata)
...
err := w.Save(s, ents)
After saving an raft snapshot to disk, SaveSnapshot method should be called to
record it. So WAL can match with the saved snapshot when restarting.
err := w.SaveSnapshot(walpb.Snapshot{Index: 10, Term: 2})
When a user has finished using a WAL it must be closed:
w.Close()
WAL files are placed inside of the directory in the following format:
$seq-$index.wal
The first WAL file to be created will be 0000000000000000-0000000000000000.wal
indicating an initial sequence of 0 and an initial raft index of 0. The first
entry written to WAL MUST have raft index 0.
WAL will cuts its current wal files if its size exceeds 8MB. This will increment an internal
sequence number and cause a new file to be created. If the last raft index saved
was 0x20 and this is the first time cut has been called on this WAL then the sequence will
increment from 0x0 to 0x1. The new file will be: 0000000000000001-0000000000000021.wal.
If a second cut issues 0x10 entries with incremental index later then the file will be called:
0000000000000002-0000000000000031.wal.
At a later time a WAL can be opened at a particular snapshot. If there is no
snapshot, an empty snapshot should be passed in.
w, err := wal.Open("/var/lib/etcd", walpb.Snapshot{Index: 10, Term: 2})
...
The snapshot must have been written to the WAL.
Additional items cannot be Saved to this WAL until all of the items from the given
snapshot to the end of the WAL are read first:
metadata, state, ents, err := w.ReadAll()
This will give you the metadata, the last raft.State and the slice of
raft.Entry items in the log.
*/
package wal
// Copyright 2015 CoreOS, Inc.
//
// 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 wal
import (
"bufio"
"encoding/binary"
"hash"
"io"
"sync"
"github.com/coreos/etcd/pkg/crc"
"github.com/coreos/etcd/wal/walpb"
)
type encoder struct {
mu sync.Mutex
bw *bufio.Writer
crc hash.Hash32
buf []byte
uint64buf []byte
}
func newEncoder(w io.Writer, prevCrc uint32) *encoder {
return &encoder{
bw: bufio.NewWriter(w),
crc: crc.New(prevCrc, crcTable),
// 1MB buffer
buf: make([]byte, 1024*1024),
uint64buf: make([]byte, 8),
}
}
func (e *encoder) encode(rec *walpb.Record) error {
e.mu.Lock()
defer e.mu.Unlock()
e.crc.Write(rec.Data)
rec.Crc = e.crc.Sum32()
var (
data []byte
err error
n int
)
if rec.Size() > len(e.buf) {
data, err = rec.Marshal()
if err != nil {
return err
}
} else {
n, err = rec.MarshalTo(e.buf)
if err != nil {
return err
}
data = e.buf[:n]
}
if err = writeInt64(e.bw, int64(len(data)), e.uint64buf); err != nil {
return err
}
_, err = e.bw.Write(data)
return err
}
func (e *encoder) flush() error {
e.mu.Lock()
defer e.mu.Unlock()
return e.bw.Flush()
}
func writeInt64(w io.Writer, n int64, buf []byte) error {
// http://golang.org/src/encoding/binary/binary.go
binary.LittleEndian.PutUint64(buf, uint64(n))
_, err := w.Write(buf)
return err
}
// Copyright 2015 CoreOS, Inc.
//
// 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 wal
import "github.com/prometheus/client_golang/prometheus"
var (
syncDurations = prometheus.NewHistogram(prometheus.HistogramOpts{
Namespace: "etcd",
Subsystem: "wal",
Name: "fsync_durations_seconds",
Help: "The latency distributions of fsync called by wal.",
Buckets: prometheus.ExponentialBuckets(0.001, 2, 14),
})
lastIndexSaved = prometheus.NewGauge(prometheus.GaugeOpts{
Namespace: "etcd",
Subsystem: "wal",
Name: "last_index_saved",
Help: "The index of the last entry saved by wal.",
})
)
func init() {
prometheus.MustRegister(syncDurations)
prometheus.MustRegister(lastIndexSaved)
}
// Copyright 2015 CoreOS, Inc.
//
// 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 wal
import "io"
type multiReadCloser struct {
closers []io.Closer
reader io.Reader
}
func (mc *multiReadCloser) Close() error {
var err error
for i := range mc.closers {
err = mc.closers[i].Close()
}
return err
}
func (mc *multiReadCloser) Read(p []byte) (int, error) {
return mc.reader.Read(p)
}
func MultiReadCloser(readClosers ...io.ReadCloser) io.ReadCloser {
cs := make([]io.Closer, len(readClosers))
rs := make([]io.Reader, len(readClosers))
for i := range readClosers {
cs[i] = readClosers[i]
rs[i] = readClosers[i]
}
r := io.MultiReader(rs...)
return &multiReadCloser{cs, r}
}
// Copyright 2015 CoreOS, Inc.
//
// 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 wal
import (
"io"
"os"
"path"
"k8s.io/kubernetes/third_party/forked/etcd237/pkg/fileutil"
"github.com/coreos/etcd/wal/walpb"
)
// Repair tries to repair ErrUnexpectedEOF in the
// last wal file by truncating.
func Repair(dirpath string) bool {
f, err := openLast(dirpath)
if err != nil {
return false
}
defer f.Close()
n := 0
rec := &walpb.Record{}
decoder := newDecoder(f)
defer decoder.close()
for {
err := decoder.decode(rec)
switch err {
case nil:
n += 8 + rec.Size()
// update crc of the decoder when necessary
switch rec.Type {
case crcType:
crc := decoder.crc.Sum32()
// current crc of decoder must match the crc of the record.
// do no need to match 0 crc, since the decoder is a new one at this case.
if crc != 0 && rec.Validate(crc) != nil {
return false
}
decoder.updateCRC(rec.Crc)
}
continue
case io.EOF:
return true
case io.ErrUnexpectedEOF:
plog.Noticef("repairing %v", f.Name())
bf, bferr := os.Create(f.Name() + ".broken")
if bferr != nil {
plog.Errorf("could not repair %v, failed to create backup file", f.Name())
return false
}
defer bf.Close()
if _, err = f.Seek(0, os.SEEK_SET); err != nil {
plog.Errorf("could not repair %v, failed to read file", f.Name())
return false
}
if _, err = io.Copy(bf, f); err != nil {
plog.Errorf("could not repair %v, failed to copy file", f.Name())
return false
}
if err = f.Truncate(int64(n)); err != nil {
plog.Errorf("could not repair %v, failed to truncate file", f.Name())
return false
}
if err = f.Sync(); err != nil {
plog.Errorf("could not repair %v, failed to sync file", f.Name())
return false
}
return true
default:
plog.Errorf("could not repair error (%v)", err)
return false
}
}
}
// openLast opens the last wal file for read and write.
func openLast(dirpath string) (*os.File, error) {
names, err := fileutil.ReadDir(dirpath)
if err != nil {
return nil, err
}
names = checkWalNames(names)
if len(names) == 0 {
return nil, ErrFileNotFound
}
last := path.Join(dirpath, names[len(names)-1])
return os.OpenFile(last, os.O_RDWR, 0)
}
// Copyright 2015 CoreOS, Inc.
//
// 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 wal
import (
"errors"
"fmt"
"strings"
"k8s.io/kubernetes/third_party/forked/etcd237/pkg/fileutil"
)
var (
badWalName = errors.New("bad wal name")
)
func Exist(dirpath string) bool {
names, err := fileutil.ReadDir(dirpath)
if err != nil {
return false
}
return len(names) != 0
}
// searchIndex returns the last array index of names whose raft index section is
// equal to or smaller than the given index.
// The given names MUST be sorted.
func searchIndex(names []string, index uint64) (int, bool) {
for i := len(names) - 1; i >= 0; i-- {
name := names[i]
_, curIndex, err := parseWalName(name)
if err != nil {
plog.Panicf("parse correct name should never fail: %v", err)
}
if index >= curIndex {
return i, true
}
}
return -1, false
}
// names should have been sorted based on sequence number.
// isValidSeq checks whether seq increases continuously.
func isValidSeq(names []string) bool {
var lastSeq uint64
for _, name := range names {
curSeq, _, err := parseWalName(name)
if err != nil {
plog.Panicf("parse correct name should never fail: %v", err)
}
if lastSeq != 0 && lastSeq != curSeq-1 {
return false
}
lastSeq = curSeq
}
return true
}
func checkWalNames(names []string) []string {
wnames := make([]string, 0)
for _, name := range names {
if _, _, err := parseWalName(name); err != nil {
plog.Warningf("ignored file %v in wal", name)
continue
}
wnames = append(wnames, name)
}
return wnames
}
func parseWalName(str string) (seq, index uint64, err error) {
if !strings.HasSuffix(str, ".wal") {
return 0, 0, badWalName
}
_, err = fmt.Sscanf(str, "%016x-%016x.wal", &seq, &index)
return seq, index, err
}
func walName(seq, index uint64) string {
return fmt.Sprintf("%016x-%016x.wal", seq, index)
}
package(default_visibility = ["//visibility:public"])
licenses(["notice"])
load(
"@io_bazel_rules_go//go:def.bzl",
"go_library",
)
go_library(
name = "go_default_library",
srcs = [
"record.go",
"record.pb.go",
],
importpath = "k8s.io/kubernetes/third_party/forked/etcd237/wal/walpb",
deps = ["//vendor/github.com/golang/protobuf/proto:go_default_library"],
)
filegroup(
name = "package-srcs",
srcs = glob(["**"]),
tags = ["automanaged"],
visibility = ["//visibility:private"],
)
filegroup(
name = "all-srcs",
srcs = [":package-srcs"],
tags = ["automanaged"],
)
// Copyright 2015 CoreOS, Inc.
//
// 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 walpb
import "errors"
var (
ErrCRCMismatch = errors.New("walpb: crc mismatch")
)
func (rec *Record) Validate(crc uint32) error {
if rec.Crc == crc {
return nil
}
rec.Reset()
return ErrCRCMismatch
}
syntax = "proto2";
package walpb;
import "gogoproto/gogo.proto";
option (gogoproto.marshaler_all) = true;
option (gogoproto.sizer_all) = true;
option (gogoproto.unmarshaler_all) = true;
option (gogoproto.goproto_getters_all) = false;
message Record {
optional int64 type = 1 [(gogoproto.nullable) = false];
optional uint32 crc = 2 [(gogoproto.nullable) = false];
optional bytes data = 3;
}
message Snapshot {
optional uint64 index = 1 [(gogoproto.nullable) = false];
optional uint64 term = 2 [(gogoproto.nullable) = false];
}
language: go
sudo: false
go: 1.6
script:
# Godep's unit tests run git, and git complains
# if we don't set these config parameters.
# We put dummy values here because they don't matter.
- git config --global user.email "you@example.com"
- git config --global user.name "Your Name"
- test -z "$(go fmt)"
- go vet
- go test -v
- go test -v -race
- test -z "$(goimports -l .)"
before_install:
- go get golang.org/x/tools/cmd/goimports
before_deploy:
- export OS_TARGETS="linux darwin windows"
- export ARCH_TARGETS="386 amd64"
- go get github.com/mitchellh/gox
- gox -os "$OS_TARGETS" -arch="$ARCH_TARGETS"
deploy:
skip_cleanup: true
provider: releases
api_key:
secure: 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
file:
- godep_darwin_amd64
- godep_linux_amd64
- godep_windows_386.exe
- godep_windows_amd64.exe
on:
tags: true
repo: tools/godep
load("@io_bazel_rules_go//go:def.bzl", "go_binary", "go_library")
licenses(["notice"])
go_library(
name = "go_default_library",
srcs = [
"dep.go",
"diff.go",
"doc.go",
"errors.go",
"get.go",
"go.go",
"godepfile.go",
"license.go",
"list.go",
"main.go",
"msg.go",
"path.go",
"pkg.go",
"restore.go",
"rewrite.go",
"save.go",
"update.go",
"util.go",
"vcs.go",
"version.go",
],
importpath = "k8s.io/kubernetes/third_party/forked/godep",
visibility = ["//visibility:private"],
deps = [
"//vendor/github.com/kr/fs:go_default_library",
"//vendor/github.com/kr/pretty:go_default_library",
"//vendor/github.com/pmezard/go-difflib/difflib:go_default_library",
"//vendor/golang.org/x/tools/go/vcs:go_default_library",
],
)
go_binary(
name = "godep",
embed = [":go_default_library"],
visibility = ["//visibility:public"],
)
filegroup(
name = "package-srcs",
srcs = glob(["**"]),
tags = ["automanaged"],
visibility = ["//visibility:private"],
)
filegroup(
name = "all-srcs",
srcs = [":package-srcs"],
tags = ["automanaged"],
visibility = ["//visibility:public"],
)
## Why do I need to check in `vendor/`?
godep's primary concern is to allow you to repeatably build your project. Your
dependencies are part of that project. Without them it won't build. Not
committing `vendor/` adds additional external dependencies that are outside of
your control. In Go, fetching packages is tied to multiple external systems
(DNS, web servers, etc). Over time other developers or code hosting sites may
discontinue service, delete code, force push, or take any number of other
actions that may make a package unreachable. Therefore it's the opinion of the
godep authors that `vendor/` should always be checked in.
## Should I use `godep restore`?
Probably not, unless you **need** to. Situations where you would **need** to are:
1. Using older Godep Workspaces (`Godeps/_workspace`) and not using `godep go
<cmd>`.
1. Resetting the state of $GOPATH to what is in your `Godeps.json` file in order
to cleanly re-vendor everything w/o upgrading/changing any deps. This is
useful when [migrating](https://github.com/tools/godep#migrating-to-vendor)
from workspaces to `vendor` or when a bug is fixed in `godep` that cleans up
a previous vendoring error.
Copyright © 2013 Keith Rarick.
Portions Copyright (c) 2012 The Go Authors. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following disclaimer
in the documentation and/or other materials provided with the
distribution.
* Neither the name of Google Inc. nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
# Godep - Archived
Please use [dep](https://github.com/golang/dep) or another tool instead.
The rest of this readme is preserved for those that may still need its contents.
[![Build Status](https://travis-ci.org/tools/godep.svg)](https://travis-ci.org/tools/godep)
[![GoDoc](https://godoc.org/github.com/tools/godep?status.svg)](https://godoc.org/github.com/tools/godep)
godep helps build packages reproducibly by fixing their dependencies.
This tool assumes you are working in a standard Go workspace, as described [here](http://golang.org/doc/code.html). We
expect godep to build on Go 1.4* or newer, but you can use it on any project that works with Go 1 or newer.
Please check the [FAQ](FAQ.md) if you have a question.
## Golang Dep
The Go community now has the [dep](https://github.com/golang/dep) project to
manage dependencies. Please consider trying to migrate from Godep to dep. If there
is an issue preventing you from migrating please file an issue with dep so the
problem can be corrected. Godep will continue to be supported for some time but
is considered to be in a state of support rather than active feature development.
## Install
```console
go get github.com/tools/godep
```
## How to use godep with a new project
Assuming you've got everything working already, so you can build your project
with `go install` and test it with `go test`, it's one command to start using:
```console
godep save
```
This will save a list of dependencies to the file `Godeps/Godeps.json` and copy
their source code into `vendor/` (or `Godeps/_workspace/` when using older
versions of Go). Godep does **not copy**:
- files from source repositories that are not tracked in version control.
- `*_test.go` files.
- `testdata` directories.
- files outside of the go packages.
Godep does not process the imports of `.go` files with either the `ignore`
or `appengine` build tags.
Test files and testdata directories can be saved by adding `-t`.
Read over the contents of `vendor/` and make sure it looks reasonable. Then
commit the `Godeps/` and `vendor/` directories to version control.
## The deprecated `-r` flag
For older versions of Go, the `-r` flag tells save to automatically rewrite
package import paths. This allows your code to refer directly to the copied
dependencies in `Godeps/_workspace`. So, a package C that depends on package
D will actually import `C/Godeps/_workspace/src/D`. This makes C's repo
self-contained and causes `go get` to build C with the right version of all
dependencies.
If you don't use `-r`, when using older version of Go, then in order to use the
fixed dependencies and get reproducible builds, you must make sure that **every
time** you run a Go-related command, you wrap it in one of these two ways:
- If the command you are running is just `go`, run it as `godep go ...`, e.g.
`godep go install -v ./...`
- When using a different command, set your `$GOPATH` using `godep path` as
described below.
`-r` isn't necessary with go1.6+ and isn't allowed.
## Additional Operations
### Restore
The `godep restore` installs the
package versions specified in `Godeps/Godeps.json` to your `$GOPATH`. This
modifies the state of packages in your `$GOPATH`. NOTE: `godep restore` leaves
git repositories in a detached state. `go1.6`+ no longer checks out the master
branch when doing a `go get`, see [here](https://github.com/golang/go/commit/42206598671a44111c8f726ad33dc7b265bdf669).
> If you run `godep restore` in your main `$GOPATH` `go get -u` will fail on packages that are behind master.
Please see the [FAQ](https://github.com/tools/godep/blob/master/FAQ.md#should-i-use-godep-restore) section about restore.
### Edit-test Cycle
1. Edit code
1. Run `godep go test`
1. (repeat)
### Add a Dependency
To add a new package foo/bar, do this:
1. Run `go get foo/bar`
1. Edit your code to import foo/bar.
1. Run `godep save` (or `godep save ./...`).
### Update a Dependency
To update a package from your `$GOPATH`, do this:
1. Run `go get -u foo/bar`
1. Run `godep update foo/bar`.
You can use the `...` wildcard, for example `godep update foo/...`. Before comitting the change, you'll probably want to
inspect the changes to Godeps, for example with `git diff`, and make sure it looks reasonable.
## Multiple Packages
If your repository has more than one package, you're probably accustomed to
running commands like `go test ./...`, `go install ./...`, and `go fmt ./...`.
Similarly, you should run `godep save ./...` to capture the dependencies of all
packages in your application.
## File Format
Godeps is a json file with the following structure:
```go
type Godeps struct {
ImportPath string
GoVersion string // Abridged output of 'go version'.
GodepVersion string // Abridged output of 'godep version'
Packages []string // Arguments to godep save, if any.
Deps []struct {
ImportPath string
Comment string // Description of commit, if present.
Rev string // VCS-specific commit ID.
}
}
```
Example Godeps:
```json
{
"ImportPath": "github.com/kr/hk",
"GoVersion": "go1.6",
"Deps": [
{
"ImportPath": "code.google.com/p/go-netrc/netrc",
"Rev": "28676070ab99"
},
{
"ImportPath": "github.com/kr/binarydist",
"Rev": "3380ade90f8b0dfa3e363fd7d7e941fa857d0d13"
}
]
}
```
## Migrating to vendor/
Godep supports the Go 1.5+ vendor/
[experiment](https://github.com/golang/go/commit/183cc0cd41f06f83cb7a2490a499e3f9101befff)
utilizing the same environment variable that the go tooling itself supports
(`GO15VENDOREXPERIMENT`).
godep mostly works the same way as the `go` command line tool. If you have go
1.5.X and set `GO15VENDOREXPERIMENT=1` or have go1.6.X (or devel) `vendor/`
is enabled. **Unless** you already have a `Godeps/_workspace`. This is a safety
feature and godep warns you about this.
When `vendor/` is enabled godep will write the vendored code into the top level
`./vendor/` directory. A `./Godeps/Godeps.json` file is created to track
the dependencies and revisions. `vendor/` is not compatible with rewrites.
There is currently no automated migration between the old Godeps workspace and
the vendor directory, but the following steps should work:
```term
# just to be safe
$ unset GO15VENDOREXPERIMENT
# restore currently vendored deps to the $GOPATH
$ godep restore
# The next line is only needed to automatically undo rewritten imports that were
# created with godep save -r.
$ godep save -r=false <pkg spec>
# Remove the old Godeps folder
$ rm -rf Godeps
# If on go1.5.X to enable `vendor/`
$ export GO15VENDOREXPERIMENT=1
# re-analyze deps and save to `vendor/`.
$ godep save <pkg spec>
# Add the changes to your VCS
$ git add -A . ; git commit -am "Godep workspace -> vendor/"
# You should see your Godeps/_workspace/src files "moved" to vendor/.
```
## Releasing
1. Increment the version in `version.go`.
1. Tag the commit with the same version number.
1. Update `Changelog.md`.
package main
import (
"fmt"
"os"
"os/exec"
"sort"
"strings"
)
// A Dependency is a specific revision of a package.
type Dependency struct {
ImportPath string
Comment string `json:",omitempty"` // Description of commit, if present.
Rev string // VCS-specific commit ID.
// used by command save & update
ws string // workspace
root string // import path to repo root
dir string // full path to package
// used by command update
matched bool // selected for update by command line
pkg *Package
missing bool // packages is missing
// used by command go
vcs *VCS
}
func eqDeps(a, b []Dependency) bool {
ok := true
for _, da := range a {
for _, db := range b {
if da.ImportPath == db.ImportPath && da.Rev != db.Rev {
ok = false
}
}
}
return ok
}
// containsPathPrefix returns whether any string in a
// is s or a directory containing s.
// For example, pattern ["a"] matches "a" and "a/b"
// (but not "ab").
func containsPathPrefix(pats []string, s string) bool {
for _, pat := range pats {
if pat == s || strings.HasPrefix(s, pat+"/") {
return true
}
}
return false
}
func uniq(a []string) []string {
var s string
var i int
if !sort.StringsAreSorted(a) {
sort.Strings(a)
}
for _, t := range a {
if t != s {
a[i] = t
i++
s = t
}
}
return a[:i]
}
// trimGoVersion and return the major version
func trimGoVersion(version string) (string, error) {
if version == "devel" {
return "devel", nil
}
if strings.HasPrefix(version, "devel+") || strings.HasPrefix(version, "devel-") {
return strings.Replace(version, "devel+", "devel-", 1), nil
}
p := strings.Split(version, ".")
if len(p) < 2 {
return "", fmt.Errorf("Error determining major go version from: %q", version)
}
var split string
switch {
case strings.Contains(p[1], "beta"):
split = "beta"
case strings.Contains(p[1], "rc"):
split = "rc"
}
if split != "" {
p[1] = strings.Split(p[1], split)[0]
}
return p[0] + "." + p[1], nil
}
var goVersionTestOutput = ""
func getGoVersion() (string, error) {
// For testing purposes only
if goVersionTestOutput != "" {
return goVersionTestOutput, nil
}
// Godep might have been compiled with a different
// version, so we can't just use runtime.Version here.
cmd := exec.Command("go", "version")
cmd.Stderr = os.Stderr
out, err := cmd.Output()
return string(out), err
}
// goVersion returns the major version string of the Go compiler
// currently installed, e.g. "go1.5".
func goVersion() (string, error) {
out, err := getGoVersion()
if err != nil {
return "", err
}
gv := strings.Split(out, " ")
if len(gv) < 4 {
return "", fmt.Errorf("Error splitting output of `go version`: Expected 4 or more elements, but there are < 4: %q", out)
}
if gv[2] == "devel" {
return trimGoVersion(gv[2] + gv[3])
}
return trimGoVersion(gv[2])
}
package main
import (
"bytes"
"fmt"
"log"
"github.com/pmezard/go-difflib/difflib"
)
var cmdDiff = &Command{
Name: "diff",
Short: "shows the diff between current and previously saved set of dependencies",
Long: `
Shows the difference, in a unified diff format, between the
current set of dependencies and those generated on a
previous 'go save' execution.
`,
Run: runDiff,
OnlyInGOPATH: true,
}
func runDiff(cmd *Command, args []string) {
gold, err := loadDefaultGodepsFile()
if err != nil {
log.Fatalln(err)
}
pkgs := []string{"."}
dot, err := LoadPackages(pkgs...)
if err != nil {
log.Fatalln(err)
}
gnew := &Godeps{
ImportPath: dot[0].ImportPath,
GoVersion: gold.GoVersion,
}
err = gnew.fill(dot, dot[0].ImportPath)
if err != nil {
log.Fatalln(err)
}
diff, err := diffStr(&gold, gnew)
if err != nil {
log.Fatalln(err)
}
fmt.Println(diff)
}
// diffStr returns a unified diff string of two Godeps.
func diffStr(a, b *Godeps) (string, error) {
var ab, bb bytes.Buffer
_, err := a.writeTo(&ab)
if err != nil {
log.Fatalln(err)
}
_, err = b.writeTo(&bb)
if err != nil {
log.Fatalln(err)
}
diff := difflib.UnifiedDiff{
A: difflib.SplitLines(ab.String()),
B: difflib.SplitLines(bb.String()),
FromFile: b.file(),
ToFile: "$GOPATH",
Context: 10,
}
return difflib.GetUnifiedDiffString(diff)
}
/*
Command godep helps build packages reproducibly by fixing
their dependencies.
Example Usage
Save currently-used dependencies to file Godeps:
$ godep save
Build project using saved dependencies:
$ godep go install
or
$ GOPATH=`godep path`:$GOPATH
$ go install
*/
package main
package main
import "errors"
var (
errorLoadingDeps = errors.New("error loading dependencies")
errorLoadingPackages = errors.New("error loading packages")
errorCopyingSourceCode = errors.New("error copying source code")
errorNoPackagesUpdatable = errors.New("no packages can be updated")
)
type errPackageNotFound struct {
path string
}
func (e errPackageNotFound) Error() string {
return "Package (" + e.path + ") not found"
}
package main
import (
"log"
"os"
"os/exec"
)
var cmdGet = &Command{
Name: "get",
Args: "[-t] [packages]",
Short: "download and install packages with specified dependencies",
Long: `
Get downloads to GOPATH the packages named by the import paths, and installs
them with the dependencies specified in their Godeps files.
If any of the packages do not have Godeps files, those are installed
as if by go get.
If -t is given, dependencies of test files are also downloaded and installed.
For more about specifying packages, see 'go help packages'.
`,
Run: runGet,
OnlyInGOPATH: true,
}
var getT bool
func init() {
cmdGet.Flag.BoolVar(&getT, "t", false, "get test dependencies")
}
func runGet(cmd *Command, args []string) {
if len(args) == 0 {
args = []string{"."}
}
cmdArgs := []interface{}{"get", "-d"}
if verbose {
cmdArgs = append(cmdArgs, "-v")
}
if getT {
cmdArgs = append(cmdArgs, "-t")
}
err := command("go", append(cmdArgs, args)...).Run()
if err != nil {
log.Fatalln(err)
}
// group import paths by Godeps location
groups := make(map[string][]string)
ps, err := LoadPackages(args...)
if err != nil {
log.Fatalln(err)
}
for _, pkg := range ps {
if pkg.Error.Err != "" {
log.Fatalln(pkg.Error.Err)
}
dir, _ := findInParents(pkg.Dir, "Godeps")
groups[dir] = append(groups[dir], pkg.ImportPath)
}
for dir, packages := range groups {
var c *exec.Cmd
if dir == "" {
c = command("go", "install", packages)
} else {
c = command("godep", "go", "install", packages)
c.Dir = dir
}
if err := c.Run(); err != nil {
log.Fatalln(err)
}
}
}
// command is like exec.Command, but the returned
// Cmd inherits stderr from the current process, and
// elements of args may be either string or []string.
func command(name string, args ...interface{}) *exec.Cmd {
var a []string
for _, arg := range args {
switch v := arg.(type) {
case string:
a = append(a, v)
case []string:
a = append(a, v...)
}
}
c := exec.Command(name, a...)
c.Stderr = os.Stderr
return c
}
package main
import (
"fmt"
"log"
"os"
"os/exec"
"path/filepath"
"strings"
)
var cmdGo = &Command{
Name: "go",
Args: "command [arguments]",
Short: "run the go tool with saved dependencies",
Long: `
Go runs the go tool with a modified GOPATH giving access to
dependencies saved in Godeps.
Any go tool command can run this way, but "godep go get"
is unnecessary and has been disabled. Instead, use
"godep go install".
`,
Run: runGo,
OnlyInGOPATH: true,
}
// Find the godep GOPATH for this file tree and run the go tool.
func runGo(cmd *Command, args []string) {
gopath := prepareGopath()
if s := os.Getenv("GOPATH"); s != "" {
gopath += string(os.PathListSeparator) + os.Getenv("GOPATH")
}
if len(args) > 0 && args[0] == "get" {
log.Printf("invalid subcommand: %q", "go get")
fmt.Fprintln(os.Stderr, "Use 'godep go install' instead.")
fmt.Fprintln(os.Stderr, "Run 'godep help go' for usage.")
os.Exit(2)
}
c := exec.Command("go", args...)
c.Env = append(envNoGopath(), "GOPATH="+gopath)
c.Stdin = os.Stdin
c.Stdout = os.Stdout
c.Stderr = os.Stderr
err := c.Run()
if err != nil {
log.Fatalln("go", err)
}
}
// prepareGopath reads dependency information from the filesystem
// entry name, fetches any necessary code, and returns a gopath
// causing the specified dependencies to be used.
func prepareGopath() (gopath string) {
dir, isDir := findGodeps()
if dir == "" {
log.Fatalln("No Godeps found (or in any parent directory)")
}
if !isDir {
log.Fatalln(strings.TrimSpace(needSource))
}
return filepath.Join(dir, "Godeps", "_workspace")
}
// findGodeps looks for a directory entry "Godeps" in the
// current directory or any parent, and returns the containing
// directory and whether the entry itself is a directory.
// If Godeps can't be found, findGodeps returns "".
// For any other error, it exits the program.
func findGodeps() (dir string, isDir bool) {
wd, err := os.Getwd()
if err != nil {
log.Fatalln(err)
}
return findInParents(wd, "Godeps")
}
// isRoot returns true iff a path is a root.
// On Unix: "/".
// On Windows: "C:\", "D:\", ...
func isRoot(p string) bool {
p = filepath.Clean(p)
volume := filepath.VolumeName(p)
p = strings.TrimPrefix(p, volume)
p = filepath.ToSlash(p)
return p == "/"
}
// findInParents returns the path to the directory containing name
// in dir or any ancestor, and whether name itself is a directory.
// If name cannot be found, findInParents returns the empty string.
func findInParents(dir, name string) (container string, isDir bool) {
for {
fi, err := os.Stat(filepath.Join(dir, name))
if os.IsNotExist(err) && isRoot(dir) {
return "", false
}
if os.IsNotExist(err) {
dir = filepath.Dir(dir)
continue
}
if err != nil {
log.Fatalln(err)
}
return dir, fi.IsDir()
}
}
func envNoGopath() (a []string) {
for _, s := range os.Environ() {
if !strings.HasPrefix(s, "GOPATH=") {
a = append(a, s)
}
}
return a
}
const needSource = `
outdated Godeps missing source code
This dependency list was created with an old version of godep.
To work around this, you have two options:
1. Run 'godep restore', and try again.
2. Ask the maintainer to switch to a newer version of godep,
then try again with the updated package.
`
package main
import (
"encoding/json"
"fmt"
"io"
"log"
"os"
"path/filepath"
)
var (
godepsFile = filepath.Join("Godeps", "Godeps.json")
oldGodepsFile = filepath.Join("Godeps")
)
// Godeps describes what a package needs to be rebuilt reproducibly.
// It's the same information stored in file Godeps.
type Godeps struct {
ImportPath string
GoVersion string
GodepVersion string
Packages []string `json:",omitempty"` // Arguments to save, if any.
Deps []Dependency
isOldFile bool
}
func loadGodepsFile(path string) (Godeps, error) {
var g Godeps
f, err := os.Open(path)
if err != nil {
return g, err
}
defer f.Close()
err = json.NewDecoder(f).Decode(&g)
if err != nil {
err = fmt.Errorf("Unable to parse %s: %s", path, err.Error())
}
return g, err
}
func loadDefaultGodepsFile() (Godeps, error) {
var g Godeps
var err error
g, err = loadGodepsFile(godepsFile)
if err != nil {
if os.IsNotExist(err) {
var err1 error
g, err1 = loadGodepsFile(oldGodepsFile)
if err1 != nil {
if os.IsNotExist(err1) {
return g, err
}
return g, err1
}
g.isOldFile = true
return g, nil
}
}
return g, err
}
// pkgs is the list of packages to read dependencies for
func (g *Godeps) fill(pkgs []*Package, destImportPath string) error {
debugln("fill", destImportPath)
ppln(pkgs)
var err1 error
var path, testImports []string
dipp := []string{destImportPath}
for _, p := range pkgs {
if p.Standard {
log.Println("ignoring stdlib package:", p.ImportPath)
continue
}
if p.Error.Err != "" {
log.Println(p.Error.Err)
err1 = errorLoadingPackages
continue
}
path = append(path, p.ImportPath)
path = append(path, p.Deps...)
testImports = append(testImports, p.TestImports...)
testImports = append(testImports, p.XTestImports...)
}
ps, err := LoadPackages(testImports...)
if err != nil {
return err
}
for _, p := range ps {
if p.Standard {
continue
}
if p.Error.Err != "" {
log.Println(p.Error.Err)
err1 = errorLoadingPackages
continue
}
path = append(path, p.ImportPath)
path = append(path, p.Deps...)
}
debugln("path", path)
for i, p := range path {
path[i] = unqualify(p)
}
path = uniq(path)
debugln("uniq, unqualify'd path", path)
ps, err = LoadPackages(path...)
if err != nil {
return err
}
for _, pkg := range ps {
if pkg.Error.Err != "" {
log.Println(pkg.Error.Err)
err1 = errorLoadingDeps
continue
}
if pkg.Standard || containsPathPrefix(dipp, pkg.ImportPath) {
debugln("standard or dest skipping", pkg.ImportPath)
continue
}
vcs, reporoot, err := VCSFromDir(pkg.Dir, filepath.Join(pkg.Root, "src"))
if err != nil {
log.Println(err)
err1 = errorLoadingDeps
continue
}
id, err := vcs.identify(pkg.Dir)
if err != nil {
log.Println(err)
err1 = errorLoadingDeps
continue
}
if vcs.isDirty(pkg.Dir, id) {
log.Println("dirty working tree (please commit changes):", pkg.Dir)
err1 = errorLoadingDeps
continue
}
comment := vcs.describe(pkg.Dir, id)
g.Deps = append(g.Deps, Dependency{
ImportPath: pkg.ImportPath,
Rev: id,
Comment: comment,
dir: pkg.Dir,
ws: pkg.Root,
root: filepath.ToSlash(reporoot),
vcs: vcs,
})
}
return err1
}
func (g *Godeps) copy() *Godeps {
h := *g
h.Deps = make([]Dependency, len(g.Deps))
copy(h.Deps, g.Deps)
return &h
}
func (g *Godeps) file() string {
if g.isOldFile {
return oldGodepsFile
}
return godepsFile
}
func (g *Godeps) save() (int64, error) {
f, err := os.Create(g.file())
if err != nil {
return 0, err
}
defer f.Close()
return g.writeTo(f)
}
func (g *Godeps) writeTo(w io.Writer) (int64, error) {
g.GodepVersion = fmt.Sprintf("v%s", version) // godep always writes its current version.
b, err := json.MarshalIndent(g, "", "\t")
if err != nil {
return 0, err
}
n, err := w.Write(append(b, '\n'))
return int64(n), err
}
func (g *Godeps) addOrUpdateDeps(deps []Dependency) {
var missing []Dependency
for _, d := range deps {
var found bool
for i := range g.Deps {
if g.Deps[i].ImportPath == d.ImportPath {
g.Deps[i] = d
found = true
break
}
}
if !found {
missing = append(missing, d)
}
}
g.Deps = append(g.Deps, missing...)
}
func (g *Godeps) removeDeps(deps []Dependency) {
var f []Dependency
for i := range g.Deps {
var found bool
for _, d := range deps {
if g.Deps[i].ImportPath == d.ImportPath {
found = true
break
}
}
if !found {
f = append(f, g.Deps[i])
}
}
g.Deps = f
}
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment