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Merge pull request #24195 from dnephin/service-update-better-args-and-command

Browse source 
Update service `args` with a single flag (shlex)
This commit is contained in:
Tibor Vass 2016-07-13 13:02:19 -07:00 committed by GitHub
commit fd8269b8f6
7 changed files with 699 additions and 14 deletions
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27
api/client/service/update.go
View file

@ -13,6 +13,7 @@ import (
"github.com/docker/engine-api/types"
"github.com/docker/engine-api/types/swarm"
"github.com/docker/go-connections/nat"
shlex "github.com/flynn-archive/go-shlex"
"github.com/spf13/cobra"
"github.com/spf13/pflag"
)
@ -31,7 +32,7 @@ func newUpdateCommand(dockerCli *client.DockerCli) *cobra.Command {
flags := cmd.Flags()
flags.String("image", "", "Service image tag")
flags.StringSlice("arg", []string{}, "Service command args")
flags.String("args", "", "Service command args")
addServiceFlags(cmd, opts)
return cmd
}
@ -91,12 +92,6 @@ func updateService(flags *pflag.FlagSet, spec *swarm.ServiceSpec) error {
}
}
updateSlice := func(flag string, field *[]string) {
if flags.Changed(flag) {
*field, _ = flags.GetStringSlice(flag)
}
}
updateInt64Value := func(flag string, field *int64) {
if flags.Changed(flag) {
*field = flags.Lookup(flag).Value.(int64Value).Value()
@ -140,7 +135,7 @@ func updateService(flags *pflag.FlagSet, spec *swarm.ServiceSpec) error {
updateString(flagName, &spec.Name)
updateLabels(flags, &spec.Labels)
updateString("image", &cspec.Image)
updateSlice("arg", &cspec.Args)
updateStringToSlice(flags, "args", &cspec.Args)
updateListOpts("env", &cspec.Env)
updateString("workdir", &cspec.Dir)
updateString(flagUser, &cspec.User)
@ -174,10 +169,7 @@ func updateService(flags *pflag.FlagSet, spec *swarm.ServiceSpec) error {
updateDurationOpt((flagRestartWindow), task.RestartPolicy.Window)
}
if flags.Changed(flagConstraint) {
task.Placement = &swarm.Placement{}
updateSlice(flagConstraint, &task.Placement.Constraints)
}
// TODO: The constraints field is fixed in #23773
if err := updateReplicas(flags, &spec.Mode); err != nil {
return err
@ -206,6 +198,17 @@ func updateService(flags *pflag.FlagSet, spec *swarm.ServiceSpec) error {
return nil
}
func updateStringToSlice(flags *pflag.FlagSet, flag string, field *[]string) error {
if !flags.Changed(flag) {
return nil
}
value, _ := flags.GetString(flag)
valueSlice, err := shlex.Split(value)
*field = valueSlice
return err
}
func updateLabels(flags *pflag.FlagSet, field *map[string]string) {
if !flags.Changed(flagLabel) {
return

3
api/client/service/update_test.go
View file

@ -9,8 +9,7 @@ import (
func TestUpdateServiceArgs(t *testing.T) {
flags := newUpdateCommand(nil).Flags()
flags.Set("arg", "the")
flags.Set("arg", "new args")
flags.Set("args", "the \"new args\"")
spec := &swarm.ServiceSpec{}
cspec := &spec.TaskTemplate.ContainerSpec

1
hack/vendor.sh
View file

@ -164,5 +164,6 @@ clone git github.com/pkg/errors 01fa4104b9c248c8945d14d9f128454d5b28d595
clone git github.com/spf13/cobra 75205f23b3ea70dc7ae5e900d074e010c23c37e9 https://github.com/dnephin/cobra.git
clone git github.com/spf13/pflag cb88ea77998c3f024757528e3305022ab50b43be
clone git github.com/inconshreveable/mousetrap 76626ae9c91c4f2a10f34cad8ce83ea42c93bb75
clone git github.com/flynn-archive/go-shlex 3f9db97f856818214da2e1057f8ad84803971cff
clean

202
vendor/src/github.com/flynn-archive/go-shlex/COPYING vendored Normal file
View file

@ -0,0 +1,202 @@
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21
vendor/src/github.com/flynn-archive/go-shlex/Makefile vendored Normal file
View file

@ -0,0 +1,21 @@
# Copyright 2011 Google Inc. All Rights Reserved.
#
# 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.
include $(GOROOT)/src/Make.inc
TARG=shlex
GOFILES=\
shlex.go\
include $(GOROOT)/src/Make.pkg

2
vendor/src/github.com/flynn-archive/go-shlex/README.md vendored Normal file
View file

@ -0,0 +1,2 @@
go-shlex is a simple lexer for go that supports shell-style quoting,
commenting, and escaping.

457
vendor/src/github.com/flynn-archive/go-shlex/shlex.go vendored Normal file
View file

@ -0,0 +1,457 @@
/*
Copyright 2012 Google Inc. All Rights Reserved.
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 shlex
/*
Package shlex implements a simple lexer which splits input in to tokens using
shell-style rules for quoting and commenting.
*/
import (
"bufio"
"errors"
"fmt"
"io"
"strings"
)
/*
A TokenType is a top-level token; a word, space, comment, unknown.
*/
type TokenType int
/*
A RuneTokenType is the type of a UTF-8 character; a character, quote, space, escape.
*/
type RuneTokenType int
type lexerState int
type Token struct {
tokenType TokenType
value string
}
/*
Two tokens are equal if both their types and values are equal. A nil token can
never equal another token.
*/
func (a *Token) Equal(b *Token) bool {
if a == nil || b == nil {
return false
}
if a.tokenType != b.tokenType {
return false
}
return a.value == b.value
}
const (
RUNE_CHAR string = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789._-,/@$*()+=><:;&^%~|!?[]{}"
RUNE_SPACE string = " \t\r\n"
RUNE_ESCAPING_QUOTE string = "\""
RUNE_NONESCAPING_QUOTE string = "'"
RUNE_ESCAPE = "\\"
RUNE_COMMENT = "#"
RUNETOKEN_UNKNOWN RuneTokenType = 0
RUNETOKEN_CHAR RuneTokenType = 1
RUNETOKEN_SPACE RuneTokenType = 2
RUNETOKEN_ESCAPING_QUOTE RuneTokenType = 3
RUNETOKEN_NONESCAPING_QUOTE RuneTokenType = 4
RUNETOKEN_ESCAPE RuneTokenType = 5
RUNETOKEN_COMMENT RuneTokenType = 6
RUNETOKEN_EOF RuneTokenType = 7
TOKEN_UNKNOWN TokenType = 0
TOKEN_WORD TokenType = 1
TOKEN_SPACE TokenType = 2
TOKEN_COMMENT TokenType = 3
STATE_START lexerState = 0
STATE_INWORD lexerState = 1
STATE_ESCAPING lexerState = 2
STATE_ESCAPING_QUOTED lexerState = 3
STATE_QUOTED_ESCAPING lexerState = 4
STATE_QUOTED lexerState = 5
STATE_COMMENT lexerState = 6
INITIAL_TOKEN_CAPACITY int = 100
)
/*
A type for classifying characters. This allows for different sorts of
classifiers - those accepting extended non-ascii chars, or strict posix
compatibility, for example.
*/
type TokenClassifier struct {
typeMap map[int32]RuneTokenType
}
func addRuneClass(typeMap *map[int32]RuneTokenType, runes string, tokenType RuneTokenType) {
for _, rune := range runes {
(*typeMap)[int32(rune)] = tokenType
}
}
/*
Create a new classifier for basic ASCII characters.
*/
func NewDefaultClassifier() *TokenClassifier {
typeMap := map[int32]RuneTokenType{}
addRuneClass(&typeMap, RUNE_CHAR, RUNETOKEN_CHAR)
addRuneClass(&typeMap, RUNE_SPACE, RUNETOKEN_SPACE)
addRuneClass(&typeMap, RUNE_ESCAPING_QUOTE, RUNETOKEN_ESCAPING_QUOTE)
addRuneClass(&typeMap, RUNE_NONESCAPING_QUOTE, RUNETOKEN_NONESCAPING_QUOTE)
addRuneClass(&typeMap, RUNE_ESCAPE, RUNETOKEN_ESCAPE)
addRuneClass(&typeMap, RUNE_COMMENT, RUNETOKEN_COMMENT)
return &TokenClassifier{
typeMap: typeMap}
}
func (classifier *TokenClassifier) ClassifyRune(rune int32) RuneTokenType {
return classifier.typeMap[rune]
}
/*
A type for turning an input stream in to a sequence of strings. Whitespace and
comments are skipped.
*/
type Lexer struct {
tokenizer *Tokenizer
}
/*
Create a new lexer.
*/
func NewLexer(r io.Reader) (*Lexer, error) {
tokenizer, err := NewTokenizer(r)
if err != nil {
return nil, err
}
lexer := &Lexer{tokenizer: tokenizer}
return lexer, nil
}
/*
Return the next word, and an error value. If there are no more words, the error
will be io.EOF.
*/
func (l *Lexer) NextWord() (string, error) {
var token *Token
var err error
for {
token, err = l.tokenizer.NextToken()
if err != nil {
return "", err
}
switch token.tokenType {
case TOKEN_WORD:
{
return token.value, nil
}
case TOKEN_COMMENT:
{
// skip comments
}
default:
{
panic(fmt.Sprintf("Unknown token type: %v", token.tokenType))
}
}
}
return "", io.EOF
}
/*
A type for turning an input stream in to a sequence of typed tokens.
*/
type Tokenizer struct {
input *bufio.Reader
classifier *TokenClassifier
}
/*
Create a new tokenizer.
*/
func NewTokenizer(r io.Reader) (*Tokenizer, error) {
input := bufio.NewReader(r)
classifier := NewDefaultClassifier()
tokenizer := &Tokenizer{
input: input,
classifier: classifier}
return tokenizer, nil
}
/*
Scan the stream for the next token.
This uses an internal state machine. It will panic if it encounters a character
which it does not know how to handle.
*/
func (t *Tokenizer) scanStream() (*Token, error) {
state := STATE_START
var tokenType TokenType
value := make([]int32, 0, INITIAL_TOKEN_CAPACITY)
var (
nextRune int32
nextRuneType RuneTokenType
err error
)
SCAN:
for {
nextRune, _, err = t.input.ReadRune()
nextRuneType = t.classifier.ClassifyRune(nextRune)
if err != nil {
if err == io.EOF {
nextRuneType = RUNETOKEN_EOF
err = nil
} else {
return nil, err
}
}
switch state {
case STATE_START: // no runes read yet
{
switch nextRuneType {
case RUNETOKEN_EOF:
{
return nil, io.EOF
}
case RUNETOKEN_CHAR:
{
tokenType = TOKEN_WORD
value = append(value, nextRune)
state = STATE_INWORD
}
case RUNETOKEN_SPACE:
{
}
case RUNETOKEN_ESCAPING_QUOTE:
{
tokenType = TOKEN_WORD
state = STATE_QUOTED_ESCAPING
}
case RUNETOKEN_NONESCAPING_QUOTE:
{
tokenType = TOKEN_WORD
state = STATE_QUOTED
}
case RUNETOKEN_ESCAPE:
{
tokenType = TOKEN_WORD
state = STATE_ESCAPING
}
case RUNETOKEN_COMMENT:
{
tokenType = TOKEN_COMMENT
state = STATE_COMMENT
}
default:
{
return nil, errors.New(fmt.Sprintf("Unknown rune: %v", nextRune))
}
}
}
case STATE_INWORD: // in a regular word
{
switch nextRuneType {
case RUNETOKEN_EOF:
{
break SCAN
}
case RUNETOKEN_CHAR, RUNETOKEN_COMMENT:
{
value = append(value, nextRune)
}
case RUNETOKEN_SPACE:
{
t.input.UnreadRune()
break SCAN
}
case RUNETOKEN_ESCAPING_QUOTE:
{
state = STATE_QUOTED_ESCAPING
}
case RUNETOKEN_NONESCAPING_QUOTE:
{
state = STATE_QUOTED
}
case RUNETOKEN_ESCAPE:
{
state = STATE_ESCAPING
}
default:
{
return nil, errors.New(fmt.Sprintf("Uknown rune: %v", nextRune))
}
}
}
case STATE_ESCAPING: // the next rune after an escape character
{
switch nextRuneType {
case RUNETOKEN_EOF:
{
err = errors.New("EOF found after escape character")
break SCAN
}
case RUNETOKEN_CHAR, RUNETOKEN_SPACE, RUNETOKEN_ESCAPING_QUOTE, RUNETOKEN_NONESCAPING_QUOTE, RUNETOKEN_ESCAPE, RUNETOKEN_COMMENT:
{
state = STATE_INWORD
value = append(value, nextRune)
}
default:
{
return nil, errors.New(fmt.Sprintf("Uknown rune: %v", nextRune))
}
}
}
case STATE_ESCAPING_QUOTED: // the next rune after an escape character, in double quotes
{
switch nextRuneType {
case RUNETOKEN_EOF:
{
err = errors.New("EOF found after escape character")
break SCAN
}
case RUNETOKEN_CHAR, RUNETOKEN_SPACE, RUNETOKEN_ESCAPING_QUOTE, RUNETOKEN_NONESCAPING_QUOTE, RUNETOKEN_ESCAPE, RUNETOKEN_COMMENT:
{
state = STATE_QUOTED_ESCAPING
value = append(value, nextRune)
}
default:
{
return nil, errors.New(fmt.Sprintf("Uknown rune: %v", nextRune))
}
}
}
case STATE_QUOTED_ESCAPING: // in escaping double quotes
{
switch nextRuneType {
case RUNETOKEN_EOF:
{
err = errors.New("EOF found when expecting closing quote.")
break SCAN
}
case RUNETOKEN_CHAR, RUNETOKEN_UNKNOWN, RUNETOKEN_SPACE, RUNETOKEN_NONESCAPING_QUOTE, RUNETOKEN_COMMENT:
{
value = append(value, nextRune)
}
case RUNETOKEN_ESCAPING_QUOTE:
{
state = STATE_INWORD
}
case RUNETOKEN_ESCAPE:
{
state = STATE_ESCAPING_QUOTED
}
default:
{
return nil, errors.New(fmt.Sprintf("Uknown rune: %v", nextRune))
}
}
}
case STATE_QUOTED: // in non-escaping single quotes
{
switch nextRuneType {
case RUNETOKEN_EOF:
{
err = errors.New("EOF found when expecting closing quote.")
break SCAN
}
case RUNETOKEN_CHAR, RUNETOKEN_UNKNOWN, RUNETOKEN_SPACE, RUNETOKEN_ESCAPING_QUOTE, RUNETOKEN_ESCAPE, RUNETOKEN_COMMENT:
{
value = append(value, nextRune)
}
case RUNETOKEN_NONESCAPING_QUOTE:
{
state = STATE_INWORD
}
default:
{
return nil, errors.New(fmt.Sprintf("Uknown rune: %v", nextRune))
}
}
}
case STATE_COMMENT:
{
switch nextRuneType {
case RUNETOKEN_EOF:
{
break SCAN
}
case RUNETOKEN_CHAR, RUNETOKEN_UNKNOWN, RUNETOKEN_ESCAPING_QUOTE, RUNETOKEN_ESCAPE, RUNETOKEN_COMMENT, RUNETOKEN_NONESCAPING_QUOTE:
{
value = append(value, nextRune)
}
case RUNETOKEN_SPACE:
{
if nextRune == '\n' {
state = STATE_START
break SCAN
} else {
value = append(value, nextRune)
}
}
default:
{
return nil, errors.New(fmt.Sprintf("Uknown rune: %v", nextRune))
}
}
}
default:
{
panic(fmt.Sprintf("Unexpected state: %v", state))
}
}
}
token := &Token{
tokenType: tokenType,
value: string(value)}
return token, err
}
/*
Return the next token in the stream, and an error value. If there are no more
tokens available, the error value will be io.EOF.
*/
func (t *Tokenizer) NextToken() (*Token, error) {
return t.scanStream()
}
/*
Split a string in to a slice of strings, based upon shell-style rules for
quoting, escaping, and spaces.
*/
func Split(s string) ([]string, error) {
l, err := NewLexer(strings.NewReader(s))
if err != nil {
return nil, err
}
subStrings := []string{}
for {
word, err := l.NextWord()
if err != nil {
if err == io.EOF {
return subStrings, nil
}
return subStrings, err
}
subStrings = append(subStrings, word)
}
return subStrings, nil
}