initial import
Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>
This commit is contained in:
commit
29add63cc6
36
.gitignore
vendored
Normal file
36
.gitignore
vendored
Normal file
@ -0,0 +1,36 @@
|
||||
# Develop tools
|
||||
/.vscode/
|
||||
/.idea/
|
||||
|
||||
# Binaries for programs and plugins
|
||||
*.exe
|
||||
*.exe~
|
||||
*.dll
|
||||
*.so
|
||||
*.dylib
|
||||
|
||||
# Folders
|
||||
_obj
|
||||
_test
|
||||
_build
|
||||
|
||||
# Architecture specific extensions/prefixes
|
||||
*.[568vq]
|
||||
[568vq].out
|
||||
|
||||
*.cgo1.go
|
||||
*.cgo2.c
|
||||
_cgo_defun.c
|
||||
_cgo_gotypes.go
|
||||
_cgo_export.*
|
||||
|
||||
# Test binary, build with `go test -c`
|
||||
*.test
|
||||
|
||||
# Output of the go coverage tool, specifically when used with LiteIDE
|
||||
*.out
|
||||
|
||||
# vim temp files
|
||||
*~
|
||||
*.swp
|
||||
*.swo
|
||||
191
LICENSE
Normal file
191
LICENSE
Normal file
@ -0,0 +1,191 @@
|
||||
|
||||
Apache License
|
||||
Version 2.0, January 2004
|
||||
http://www.apache.org/licenses/
|
||||
|
||||
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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|
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1. Definitions.
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|
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"License" shall mean the terms and conditions for use, reproduction,
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and distribution as defined by Sections 1 through 9 of this document.
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"Licensor" shall mean the copyright owner or entity authorized by
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the copyright owner that is granting the License.
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"Legal Entity" shall mean the union of the acting entity and all
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"You" (or "Your") shall mean an individual or Legal Entity
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"Work" shall mean the work of authorship, whether in Source or
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5. Submission of Contributions. Unless You explicitly state otherwise,
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any Contribution intentionally submitted for inclusion in the Work
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by You to the Licensor shall be under the terms and conditions of
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this License, without any additional terms or conditions.
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Notwithstanding the above, nothing herein shall supersede or modify
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with Licensor regarding such Contributions.
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6. Trademarks. This License does not grant permission to use the trade
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agreed to in writing, Licensor provides the Work (and each
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Contributor provides its Contributions) on an "AS IS" BASIS,
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whether in tort (including negligence), contract, or otherwise,
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unless required by applicable law (such as deliberate and grossly
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liable to You for damages, including any direct, indirect, special,
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9. Accepting Warranty or Additional Liability. While redistributing
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of your accepting any such warranty or additional liability.
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|
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END OF TERMS AND CONDITIONS
|
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|
||||
Copyright 2020 Unistack LLC.
|
||||
|
||||
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
|
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|
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Unless required by applicable law or agreed to in writing, software
|
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distributed under the License is distributed on an "AS IS" BASIS,
|
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
81
flag.go
Normal file
81
flag.go
Normal file
@ -0,0 +1,81 @@
|
||||
package flag
|
||||
|
||||
import (
|
||||
"context"
|
||||
"errors"
|
||||
"flag"
|
||||
"reflect"
|
||||
"strconv"
|
||||
|
||||
"github.com/unistack-org/micro/v3/config"
|
||||
rutil "github.com/unistack-org/micro/v3/util/reflect"
|
||||
)
|
||||
|
||||
var (
|
||||
DefaultStructTag = "flag"
|
||||
ErrInvalidStruct = errors.New("invalid struct specified")
|
||||
)
|
||||
|
||||
type flagConfig struct {
|
||||
opts config.Options
|
||||
}
|
||||
|
||||
func (c *flagConfig) Options() config.Options {
|
||||
return c.opts
|
||||
}
|
||||
|
||||
func (c *flagConfig) Init(opts ...config.Option) error {
|
||||
for _, o := range opts {
|
||||
o(&c.opts)
|
||||
}
|
||||
|
||||
fields, err := rutil.StructFields(c.opts.Struct)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
for _, sf := range fields {
|
||||
tf, ok := sf.Field.Tag.Lookup(c.opts.StructTag)
|
||||
if !ok {
|
||||
continue
|
||||
}
|
||||
fn, fv, fd := getFlagOpts(tf)
|
||||
|
||||
switch sf.Value.Kind() {
|
||||
case reflect.String:
|
||||
v := sf.Value.Addr().Interface().(*string)
|
||||
flag.StringVar(v, fn, fv, fd)
|
||||
case reflect.Bool:
|
||||
v := sf.Value.Addr().Interface().(*bool)
|
||||
i, _ := strconv.ParseBool(fv)
|
||||
flag.BoolVar(v, fn, i, fd)
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (c *flagConfig) Load(ctx context.Context) error {
|
||||
flag.Parse()
|
||||
return nil
|
||||
}
|
||||
|
||||
func (c *flagConfig) Save(ctx context.Context) error {
|
||||
return nil
|
||||
}
|
||||
|
||||
func (c *flagConfig) String() string {
|
||||
return "flag"
|
||||
}
|
||||
|
||||
func (c *flagConfig) Name() string {
|
||||
return c.opts.Name
|
||||
}
|
||||
|
||||
func NewConfig(opts ...config.Option) config.Config {
|
||||
options := config.NewOptions(opts...)
|
||||
if len(options.StructTag) == 0 {
|
||||
options.StructTag = DefaultStructTag
|
||||
}
|
||||
return &flagConfig{opts: options}
|
||||
}
|
||||
49
flag_test.go
Normal file
49
flag_test.go
Normal file
@ -0,0 +1,49 @@
|
||||
package flag
|
||||
|
||||
import (
|
||||
"flag"
|
||||
"os"
|
||||
"reflect"
|
||||
"strconv"
|
||||
"testing"
|
||||
|
||||
rutil "github.com/unistack-org/micro/v3/util/reflect"
|
||||
)
|
||||
|
||||
func TestLoad(t *testing.T) {
|
||||
os.Args = append(os.Args, "-broker", "5566:33")
|
||||
type config struct {
|
||||
Broker string `flag:"name=broker,desc='description with, comma',default='127.0.0.1:9092'"`
|
||||
Verbose bool `flag:"name=verbose,desc='verbose output',default='false value'"`
|
||||
}
|
||||
|
||||
cfg := &config{}
|
||||
|
||||
fields, err := rutil.StructFields(cfg)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
for _, sf := range fields {
|
||||
tf, ok := sf.Field.Tag.Lookup("flag")
|
||||
if !ok {
|
||||
continue
|
||||
}
|
||||
fn, fv, fd := getFlagOpts(tf)
|
||||
|
||||
switch sf.Value.Kind() {
|
||||
case reflect.String:
|
||||
v := sf.Value.Addr().Interface().(*string)
|
||||
flag.StringVar(v, fn, fv, fd)
|
||||
case reflect.Bool:
|
||||
v := sf.Value.Addr().Interface().(*bool)
|
||||
i, _ := strconv.ParseBool(fv)
|
||||
flag.BoolVar(v, fn, i, fd)
|
||||
}
|
||||
}
|
||||
|
||||
flag.Parse()
|
||||
if cfg.Broker != "5566:33" {
|
||||
t.Fatalf("failed to parse flags broker value invalid: %#+v", cfg)
|
||||
}
|
||||
}
|
||||
5
go.mod
Normal file
5
go.mod
Normal file
@ -0,0 +1,5 @@
|
||||
module github.com/unistack-org/micro-config-flag/v3
|
||||
|
||||
go 1.16
|
||||
|
||||
require github.com/unistack-org/micro/v3 v3.3.22
|
||||
18
go.sum
Normal file
18
go.sum
Normal file
@ -0,0 +1,18 @@
|
||||
github.com/dgrijalva/jwt-go v3.2.0+incompatible/go.mod h1:E3ru+11k8xSBh+hMPgOLZmtrrCbhqsmaPHjLKYnJCaQ=
|
||||
github.com/ef-ds/deque v1.0.4/go.mod h1:gXDnTC3yqvBcHbq2lcExjtAcVrOnJCbMcZXmuj8Z4tg=
|
||||
github.com/google/uuid v1.2.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
|
||||
github.com/imdario/mergo v0.3.12 h1:b6R2BslTbIEToALKP7LxUvijTsNI9TAe80pLWN2g/HU=
|
||||
github.com/imdario/mergo v0.3.12/go.mod h1:jmQim1M+e3UYxmgPu/WyfjB3N3VflVyUjjjwH0dnCYA=
|
||||
github.com/patrickmn/go-cache v2.1.0+incompatible/go.mod h1:3Qf8kWWT7OJRJbdiICTKqZju1ZixQ/KpMGzzAfe6+WQ=
|
||||
github.com/silas/dag v0.0.0-20210121180416-41cf55125c34/go.mod h1:7RTUFBdIRC9nZ7/3RyRNH1bdqIShrDejd1YbLwgPS+I=
|
||||
github.com/unistack-org/micro/v3 v3.3.22 h1:4mY+lhqW6N/3A0LSfAnGHE65TakGOrbU144/FQEjZIs=
|
||||
github.com/unistack-org/micro/v3 v3.3.22/go.mod h1:LXmPfbJnJNvL0kQs8HfnkV3Wya2Wb+C7keVq++RCZnk=
|
||||
golang.org/x/net v0.0.0-20210510120150-4163338589ed/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
|
||||
golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
|
||||
golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
|
||||
golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
|
||||
golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
|
||||
golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
|
||||
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
|
||||
gopkg.in/yaml.v2 v2.3.0 h1:clyUAQHOM3G0M3f5vQj7LuJrETvjVot3Z5el9nffUtU=
|
||||
gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
|
||||
35
util.go
Normal file
35
util.go
Normal file
@ -0,0 +1,35 @@
|
||||
package flag
|
||||
|
||||
import (
|
||||
"strings"
|
||||
)
|
||||
|
||||
func getFlagOpts(tf string) (string, string, string) {
|
||||
ret := make([]string, 3)
|
||||
vals := strings.Split(tf, ",")
|
||||
f := 0
|
||||
for _, val := range vals {
|
||||
p := strings.Split(val, "=")
|
||||
switch p[0] {
|
||||
case "name":
|
||||
f = 0
|
||||
case "desc":
|
||||
f = 1
|
||||
case "default":
|
||||
f = 2
|
||||
default:
|
||||
ret[f] += "," + val
|
||||
continue
|
||||
}
|
||||
ret[f] = p[1]
|
||||
}
|
||||
for idx := range ret {
|
||||
if ret[idx][0] == '\'' {
|
||||
ret[idx] = ret[idx][1:]
|
||||
}
|
||||
if ret[idx][len(ret[idx])-1] == '\'' {
|
||||
ret[idx] = ret[idx][:len(ret[idx])-1]
|
||||
}
|
||||
}
|
||||
return ret[0], ret[1], ret[2]
|
||||
}
|
||||
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