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17 changed files with 210 additions and 526 deletions

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@ -1,29 +0,0 @@
name: lint
on:
pull_request:
types: [opened, reopened, synchronize]
branches:
- master
- v3
- v4
jobs:
lint:
runs-on: ubuntu-latest
steps:
- name: checkout code
uses: actions/checkout@v4
with:
filter: 'blob:none'
- name: setup go
uses: actions/setup-go@v5
with:
cache-dependency-path: "**/*.sum"
go-version: 'stable'
- name: setup deps
run: go get -v ./...
- name: run lint
uses: https://github.com/golangci/golangci-lint-action@v6
with:
version: 'latest'

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@ -1,34 +0,0 @@
name: test
on:
pull_request:
types: [opened, reopened, synchronize]
branches:
- master
- v3
- v4
push:
branches:
- master
- v3
- v4
jobs:
test:
runs-on: ubuntu-latest
steps:
- name: checkout code
uses: actions/checkout@v4
with:
filter: 'blob:none'
- name: setup go
uses: actions/setup-go@v5
with:
cache-dependency-path: "**/*.sum"
go-version: 'stable'
- name: setup deps
run: go get -v ./...
- name: run test
env:
INTEGRATION_TESTS: yes
run: go test -mod readonly -v ./...

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@ -1,53 +0,0 @@
name: test
on:
pull_request:
types: [opened, reopened, synchronize]
branches:
- master
- v3
- v4
push:
branches:
- master
- v3
- v4
jobs:
test:
runs-on: ubuntu-latest
steps:
- name: checkout code
uses: actions/checkout@v4
with:
filter: 'blob:none'
- name: checkout tests
uses: actions/checkout@v4
with:
ref: master
filter: 'blob:none'
repository: unistack-org/micro-tests
path: micro-tests
- name: setup go
uses: actions/setup-go@v5
with:
cache-dependency-path: "**/*.sum"
go-version: 'stable'
- name: setup go work
env:
GOWORK: /workspace/${{ github.repository_owner }}/go.work
run: |
go work init
go work use .
go work use micro-tests
- name: setup deps
env:
GOWORK: /workspace/${{ github.repository_owner }}/go.work
run: go get -v ./...
- name: run tests
env:
INTEGRATION_TESTS: yes
GOWORK: /workspace/${{ github.repository_owner }}/go.work
run: |
cd micro-tests
go test -mod readonly -v ./... || true

20
.github/renovate.json vendored Normal file
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@ -0,0 +1,20 @@
{
"extends": [
"config:base"
],
"postUpdateOptions": ["gomodTidy"],
"packageRules": [
{
"matchUpdateTypes": ["minor", "patch", "pin", "digest"],
"automerge": true
},
{
"groupName": "all deps",
"separateMajorMinor": true,
"groupSlug": "all",
"packagePatterns": [
"*"
]
}
]
}

46
.github/workflows/build.yml vendored Normal file
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@ -0,0 +1,46 @@
name: build
on:
push:
branches:
- master
jobs:
test:
name: test
runs-on: ubuntu-latest
steps:
- name: setup
uses: actions/setup-go@v2
with:
go-version: 1.16
- name: checkout
uses: actions/checkout@v2
- name: cache
uses: actions/cache@v2
with:
path: ~/go/pkg/mod
key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
restore-keys: ${{ runner.os }}-go-
- name: deps
run: go get -v -t -d ./...
- name: test
env:
INTEGRATION_TESTS: yes
run: go test -mod readonly -v ./...
lint:
name: lint
runs-on: ubuntu-latest
steps:
- name: checkout
uses: actions/checkout@v2
- name: lint
uses: golangci/golangci-lint-action@v2
continue-on-error: true
with:
# Required: the version of golangci-lint is required and must be specified without patch version: we always use the latest patch version.
version: v1.30
# Optional: working directory, useful for monorepos
# working-directory: somedir
# Optional: golangci-lint command line arguments.
# args: --issues-exit-code=0
# Optional: show only new issues if it's a pull request. The default value is `false`.
# only-new-issues: true

46
.github/workflows/pr.yml vendored Normal file
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@ -0,0 +1,46 @@
name: prbuild
on:
pull_request:
branches:
- master
jobs:
test:
name: test
runs-on: ubuntu-latest
steps:
- name: setup
uses: actions/setup-go@v2
with:
go-version: 1.16
- name: checkout
uses: actions/checkout@v2
- name: cache
uses: actions/cache@v2
with:
path: ~/go/pkg/mod
key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
restore-keys: ${{ runner.os }}-go-
- name: deps
run: go get -v -t -d ./...
- name: test
env:
INTEGRATION_TESTS: yes
run: go test -mod readonly -v ./...
lint:
name: lint
runs-on: ubuntu-latest
steps:
- name: checkout
uses: actions/checkout@v2
- name: lint
uses: golangci/golangci-lint-action@v2
continue-on-error: true
with:
# Required: the version of golangci-lint is required and must be specified without patch version: we always use the latest patch version.
version: v1.30
# Optional: working directory, useful for monorepos
# working-directory: somedir
# Optional: golangci-lint command line arguments.
# args: --issues-exit-code=0
# Optional: show only new issues if it's a pull request. The default value is `false`.
# only-new-issues: true

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@ -1,5 +0,0 @@
run:
concurrency: 8
deadline: 5m
issues-exit-code: 1
tests: true

337
file.go
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@ -4,237 +4,123 @@ import (
"context" "context"
"fmt" "fmt"
"io" "io"
"io/ioutil"
"os" "os"
"regexp"
"dario.cat/mergo" "github.com/imdario/mergo"
"go.unistack.org/micro/v4/codec" "github.com/unistack-org/micro/v3/codec"
"go.unistack.org/micro/v4/config" "github.com/unistack-org/micro/v3/config"
"go.unistack.org/micro/v4/options" rutil "github.com/unistack-org/micro/v3/util/reflect"
rutil "go.unistack.org/micro/v4/util/reflect"
"golang.org/x/text/transform"
) )
var DefaultStructTag = "file" var (
DefaultStructTag = "file"
)
type fileConfig struct { type fileConfig struct {
opts config.Options opts config.Options
path string path string
reader io.Reader
transformer transform.Transformer
} }
func (c *fileConfig) Options() config.Options { func (c *fileConfig) Options() config.Options {
return c.opts return c.opts
} }
func (c *fileConfig) Init(opts ...options.Option) error { func (c *fileConfig) Init(opts ...config.Option) error {
var err error
if err = config.DefaultBeforeInit(c.opts.Context, c); err != nil && !c.opts.AllowFail {
return err
}
for _, o := range opts { for _, o := range opts {
if err = o(&c.opts); err != nil { o(&c.opts)
return err
}
} }
if c.opts.Context != nil { if c.opts.Context != nil {
if v, ok := c.opts.Context.Value(pathKey{}).(string); ok { if v, ok := c.opts.Context.Value(pathKey{}).(string); ok {
c.path = v c.path = v
} }
if v, ok := c.opts.Context.Value(transformerKey{}).(transform.Transformer); ok {
c.transformer = v
}
if v, ok := c.opts.Context.Value(readerKey{}).(io.Reader); ok {
c.reader = v
}
} }
if c.opts.Codec == nil { if c.path == "" {
return fmt.Errorf("Codec must be specified") return fmt.Errorf("file path not exists: %v", c.path)
}
if c.path == "" && c.reader == nil {
err := fmt.Errorf("Path or Reader must be specified")
if !c.opts.AllowFail {
return err
}
}
if err := config.DefaultAfterInit(c.opts.Context, c); err != nil && !c.opts.AllowFail {
return err
} }
return nil return nil
} }
func (c *fileConfig) Load(ctx context.Context, opts ...options.Option) error { func (c *fileConfig) Load(ctx context.Context, opts ...config.LoadOption) error {
if c.opts.SkipLoad != nil && c.opts.SkipLoad(ctx, c) { for _, fn := range c.opts.BeforeLoad {
return nil if err := fn(ctx, c); err != nil && !c.opts.AllowFail {
}
if err := config.DefaultBeforeLoad(ctx, c); err != nil && !c.opts.AllowFail {
return err
}
path := c.path
transformer := c.transformer
reader := c.reader
options := config.NewLoadOptions(opts...)
if options.Context != nil {
if v, ok := options.Context.Value(pathKey{}).(string); ok && v != "" {
path = v
}
if v, ok := c.opts.Context.Value(transformerKey{}).(transform.Transformer); ok {
transformer = v
}
if v, ok := c.opts.Context.Value(readerKey{}).(io.Reader); ok {
reader = v
}
}
var fp io.Reader
var err error
if c.path != "" {
fp, err = os.OpenFile(path, os.O_RDONLY, os.FileMode(0o400))
} else if c.reader != nil {
fp = reader
} else {
err = fmt.Errorf("Path or Reader must be specified")
}
if err != nil {
if !c.opts.AllowFail {
if c.path != "" {
return fmt.Errorf("file load path %s error: %w", path, err)
} else {
return fmt.Errorf("file load error: %w", err)
}
}
if err = config.DefaultAfterLoad(ctx, c); err != nil && !c.opts.AllowFail {
return err return err
} }
return nil
} }
if fpc, ok := fp.(io.Closer); ok { fp, err := os.OpenFile(c.path, os.O_RDONLY, os.FileMode(0400))
defer fpc.Close() if err != nil && !c.opts.AllowFail {
} return fmt.Errorf("failed to open: %s, error: %w", c.path, err)
} else if err == nil {
var r io.Reader defer fp.Close()
if transformer != nil { var buf []byte
r = transform.NewReader(fp, c.transformer) buf, err = ioutil.ReadAll(io.LimitReader(fp, int64(codec.DefaultMaxMsgSize)))
} else {
r = fp
}
buf, err := io.ReadAll(io.LimitReader(r, int64(codec.DefaultMaxMsgSize)))
if err != nil {
if !c.opts.AllowFail {
return err
}
if err = config.DefaultAfterLoad(ctx, c); err != nil && !c.opts.AllowFail {
return err
}
return nil
}
dst := c.opts.Struct
if options.Struct != nil {
dst = options.Struct
}
src, err := rutil.Zero(dst)
if err == nil {
err = c.opts.Codec.Unmarshal(buf, src)
if err == nil { if err == nil {
options := config.NewLoadOptions(opts...) src, err := rutil.Zero(c.opts.Struct)
mopts := []func(*mergo.Config){mergo.WithTypeCheck} if err == nil {
if options.Override { err = c.opts.Codec.Unmarshal(buf, src)
mopts = append(mopts, mergo.WithOverride) if err == nil {
options := config.NewLoadOptions(opts...)
mopts := []func(*mergo.Config){mergo.WithTypeCheck}
if options.Override {
mopts = append(mopts, mergo.WithOverride)
}
if options.Append {
mopts = append(mopts, mergo.WithAppendSlice)
}
err = mergo.Merge(c.opts.Struct, src, mopts...)
}
} }
if options.Append { }
mopts = append(mopts, mergo.WithAppendSlice) if err != nil && !c.opts.AllowFail {
} return err
err = mergo.Merge(dst, src, mopts...)
} }
} }
if err != nil && !c.opts.AllowFail { for _, fn := range c.opts.AfterLoad {
return err if err := fn(ctx, c); err != nil && !c.opts.AllowFail {
} return err
}
if err := config.DefaultAfterLoad(ctx, c); err != nil && !c.opts.AllowFail {
return err
} }
return nil return nil
} }
func (c *fileConfig) Save(ctx context.Context, opts ...options.Option) error { func (c *fileConfig) Save(ctx context.Context, opts ...config.SaveOption) error {
if c.opts.SkipSave != nil && c.opts.SkipSave(ctx, c) { for _, fn := range c.opts.BeforeSave {
return nil if err := fn(ctx, c); err != nil && !c.opts.AllowFail {
}
if err := config.DefaultBeforeSave(ctx, c); err != nil && !c.opts.AllowFail {
return err
}
path := c.path
options := config.NewSaveOptions(opts...)
if options.Context != nil {
if v, ok := options.Context.Value(pathKey{}).(string); ok && v != "" {
path = v
}
}
dst := c.opts.Struct
if options.Struct != nil {
dst = options.Struct
}
buf, err := c.opts.Codec.Marshal(dst)
if err != nil {
if !c.opts.AllowFail {
return err return err
} }
if err = config.DefaultAfterSave(ctx, c); err != nil && !c.opts.AllowFail {
return err
}
return nil
} }
fp, err := os.OpenFile(path, os.O_WRONLY|os.O_CREATE, os.FileMode(0o600)) buf, err := c.opts.Codec.Marshal(c.opts.Struct)
if err != nil { if err == nil {
if !c.opts.AllowFail { var fp *os.File
return err fp, err = os.OpenFile(c.path, os.O_RDONLY, os.FileMode(0400))
} if err != nil && c.opts.AllowFail {
if err = config.DefaultAfterSave(ctx, c); err != nil && !c.opts.AllowFail { return nil
return err } else if err != nil && !c.opts.AllowFail {
return fmt.Errorf("failed to open: %s, error: %w", c.path, err)
} }
return nil if _, werr := fp.Write(buf); werr == nil {
} err = fp.Close()
defer fp.Close() } else {
err = werr
if _, err = fp.Write(buf); err == nil { }
err = fp.Close()
} }
if err != nil && !c.opts.AllowFail { if err != nil && !c.opts.AllowFail {
return err return err
} }
if err := config.DefaultAfterSave(ctx, c); err != nil && !c.opts.AllowFail { for _, fn := range c.opts.AfterSave {
return err if err := fn(ctx, c); err != nil && !c.opts.AllowFail {
return err
}
} }
return nil return nil
@ -248,17 +134,9 @@ func (c *fileConfig) Name() string {
return c.opts.Name return c.opts.Name
} }
func (c *fileConfig) Watch(ctx context.Context, opts ...options.Option) (config.Watcher, error) { func (c *fileConfig) Watch(ctx context.Context, opts ...config.WatchOption) (config.Watcher, error) {
path := c.path
options := config.NewWatchOptions(opts...)
if options.Context != nil {
if v, ok := options.Context.Value(pathKey{}).(string); ok && v != "" {
path = v
}
}
w := &fileWatcher{ w := &fileWatcher{
path: path, path: c.path,
opts: c.opts, opts: c.opts,
wopts: config.NewWatchOptions(opts...), wopts: config.NewWatchOptions(opts...),
done: make(chan struct{}), done: make(chan struct{}),
@ -271,89 +149,10 @@ func (c *fileConfig) Watch(ctx context.Context, opts ...options.Option) (config.
return w, nil return w, nil
} }
func NewConfig(opts ...options.Option) config.Config { func NewConfig(opts ...config.Option) config.Config {
options := config.NewOptions(opts...) options := config.NewOptions(opts...)
if len(options.StructTag) == 0 { if len(options.StructTag) == 0 {
options.StructTag = DefaultStructTag options.StructTag = DefaultStructTag
} }
return &fileConfig{opts: options} return &fileConfig{opts: options}
} }
type EnvTransformer struct {
maxMatchSize int
Regexp *regexp.Regexp
TransformerFunc TransformerFunc
overflow []byte
}
var _ transform.Transformer = (*EnvTransformer)(nil)
// Transform implements golang.org/x/text/transform#Transformer
func (t *EnvTransformer) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) {
t.maxMatchSize = 1024
var n int
// copy any overflow from the last call
if len(t.overflow) > 0 {
n, err = fullcopy(dst, t.overflow)
nDst += n
if err != nil {
t.overflow = t.overflow[n:]
return
}
t.overflow = nil
}
for _, index := range t.Regexp.FindAllSubmatchIndex(src, -1) {
// copy everything up to the match
n, err = fullcopy(dst[nDst:], src[nSrc:index[0]])
nSrc += n
nDst += n
if err != nil {
return
}
// skip the match if it ends at the end the src buffer.
// it could potentially match more
if index[1] == len(src) && !atEOF {
break
}
// copy the replacement
rep := t.TransformerFunc(src, index)
n, err = fullcopy(dst[nDst:], rep)
nDst += n
nSrc = index[1]
if err != nil {
t.overflow = rep[n:]
return
}
}
// if we're at the end, tack on any remaining bytes
if atEOF {
n, err = fullcopy(dst[nDst:], src[nSrc:])
nDst += n
nSrc += n
return
}
// skip any bytes which exceede the max match size
if skip := len(src[nSrc:]) - t.maxMatchSize; skip > 0 {
n, err = fullcopy(dst[nDst:], src[nSrc:nSrc+skip])
nSrc += n
nDst += n
if err != nil {
return
}
}
err = transform.ErrShortSrc
return
}
// Reset resets the state and allows a Transformer to be reused.
func (t *EnvTransformer) Reset() {
t.overflow = nil
}
func fullcopy(dst, src []byte) (n int, err error) {
n = copy(dst, src)
if n < len(src) {
err = transform.ErrShortDst
}
return
}

View File

@ -1,73 +0,0 @@
package file
import (
"bytes"
"context"
"encoding/json"
"io"
"os"
"testing"
"go.unistack.org/micro/v4/codec"
"go.unistack.org/micro/v4/config"
"go.unistack.org/micro/v4/options"
)
type jsoncodec struct{}
func (*jsoncodec) Marshal(v interface{}, opts ...codec.Option) ([]byte, error) {
return json.Marshal(v)
}
func (*jsoncodec) Unmarshal(buf []byte, v interface{}, opts ...codec.Option) error {
return json.Unmarshal(buf, v)
}
func (*jsoncodec) ReadBody(r io.Reader, v interface{}) error {
return nil
}
func (*jsoncodec) ReadHeader(r io.Reader, m *codec.Message, t codec.MessageType) error {
return nil
}
func (*jsoncodec) String() string {
return "json"
}
func (*jsoncodec) Write(w io.Writer, m *codec.Message, v interface{}) error {
return nil
}
func TestLoadReplace(t *testing.T) {
type Config struct {
Key string
Pass string
}
os.Setenv("PLACEHOLDER", "test")
cfg := &Config{}
ctx := context.TODO()
buf := bytes.NewReader([]byte(`{"key":"val","pass":"${PLACEHOLDER}"}`))
tr, err := NewEnvTransformer(`(?s)\$\{.*?\}`, 2, 1)
if err != nil {
t.Fatal(err)
}
c := NewConfig(options.Codec(
&jsoncodec{}),
config.Struct(cfg),
Reader(buf),
Transformer(tr),
)
if err := c.Init(); err != nil {
t.Fatal(err)
}
if err := c.Load(ctx); err != nil {
t.Fatal(err)
}
if cfg.Pass != "test" {
t.Fatalf("not works %#+v\n", cfg)
}
}

10
go.mod
View File

@ -1,10 +1,8 @@
module go.unistack.org/micro-config-file/v4 module github.com/unistack-org/micro-config-file/v3
go 1.20 go 1.16
require ( require (
dario.cat/mergo v1.0.0 github.com/imdario/mergo v0.3.12
go.unistack.org/micro/v4 v4.0.17 github.com/unistack-org/micro/v3 v3.5.9
) )
require github.com/google/uuid v1.6.0 // indirect

25
go.sum
View File

@ -1,9 +1,18 @@
dario.cat/mergo v1.0.0 h1:AGCNq9Evsj31mOgNPcLyXc+4PNABt905YmuqPYYpBWk= github.com/ef-ds/deque v1.0.4/go.mod h1:gXDnTC3yqvBcHbq2lcExjtAcVrOnJCbMcZXmuj8Z4tg=
dario.cat/mergo v1.0.0/go.mod h1:uNxQE+84aUszobStD9th8a29P2fMDhsBdgRYvZOxGmk= github.com/golang-jwt/jwt v3.2.2+incompatible/go.mod h1:8pz2t5EyA70fFQQSrl6XZXzqecmYZeUEB8OUGHkxJ+I=
github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0= github.com/google/uuid v1.3.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo= github.com/imdario/mergo v0.3.12 h1:b6R2BslTbIEToALKP7LxUvijTsNI9TAe80pLWN2g/HU=
go.unistack.org/micro/v4 v4.0.17 h1:mF7uM+J4ILdG+1fcwzKYCwDlxhdbF/e1WnGzKKLnIXc= github.com/imdario/mergo v0.3.12/go.mod h1:jmQim1M+e3UYxmgPu/WyfjB3N3VflVyUjjjwH0dnCYA=
go.unistack.org/micro/v4 v4.0.17/go.mod h1:ZDgU9931vm2l7X6RN/6UuwRIVp24GRdmQ7dKmegArk4= 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 v3.5.9 h1:9iIxGZ56bVME7E9hqKIHeSHXkn69M9KFyJfaUzi7B9k=
github.com/unistack-org/micro/v3 v3.5.9/go.mod h1:zQnZPEy842kQNcyjmVys6tdMjty4PHdyUUKYm1wrg1s=
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/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA= gopkg.in/yaml.v2 v2.3.0 h1:clyUAQHOM3G0M3f5vQj7LuJrETvjVot3Z5el9nffUtU=
gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=

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@ -1,52 +1,11 @@
package file package file
import ( import (
"io" "github.com/unistack-org/micro/v3/config"
"os"
"regexp"
"go.unistack.org/micro/v4/options"
"golang.org/x/text/transform"
) )
type pathKey struct{} type pathKey struct{}
func Path(path string) options.Option { func Path(path string) config.Option {
return options.ContextOption(pathKey{}, path) return config.SetOption(pathKey{}, path)
}
type readerKey struct{}
func Reader(r io.Reader) options.Option {
return options.ContextOption(readerKey{}, r)
}
type transformerKey struct{}
type TransformerFunc func(src []byte, index []int) []byte
func Transformer(t transform.Transformer) options.Option {
return options.ContextOption(transformerKey{}, t)
}
func NewEnvTransformer(rs string, trimLeft, trimRight int) (*EnvTransformer, error) {
re, err := regexp.Compile(rs)
if err != nil {
return nil, err
}
return &EnvTransformer{
Regexp: re,
TransformerFunc: func(src []byte, index []int) []byte {
var envKey string
if len(src) > index[1]-trimRight {
envKey = string(src[index[0]+trimLeft : index[1]-trimRight])
}
if envVal, ok := os.LookupEnv(envKey); ok {
return []byte(envVal)
}
return src[index[0]:index[1]]
},
}, nil
} }

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@ -3,13 +3,14 @@ package file
import ( import (
"fmt" "fmt"
"io" "io"
"io/ioutil"
"os" "os"
"reflect" "reflect"
"go.unistack.org/micro/v4/codec" "github.com/unistack-org/micro/v3/codec"
"go.unistack.org/micro/v4/config" "github.com/unistack-org/micro/v3/config"
"go.unistack.org/micro/v4/util/jitter" "github.com/unistack-org/micro/v3/util/jitter"
rutil "go.unistack.org/micro/v4/util/reflect" rutil "github.com/unistack-org/micro/v3/util/reflect"
) )
type fileWatcher struct { type fileWatcher struct {
@ -43,7 +44,7 @@ func (w *fileWatcher) run() {
return return
} }
var buf []byte var buf []byte
buf, err = io.ReadAll(io.LimitReader(fp, int64(codec.DefaultMaxMsgSize))) buf, err = ioutil.ReadAll(io.LimitReader(fp, int64(codec.DefaultMaxMsgSize)))
if err == nil { if err == nil {
err = w.opts.Codec.Unmarshal(buf, dst) err = w.opts.Codec.Unmarshal(buf, dst)
} }