70 lines
1.2 KiB
Go
70 lines
1.2 KiB
Go
// Package file is a file source. Expected format is json
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package file
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import (
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"io/ioutil"
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"os"
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"github.com/micro/go-micro/v2/config/source"
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)
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type file struct {
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path string
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opts source.Options
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}
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var (
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DefaultPath = "config.json"
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)
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func (f *file) Read() (*source.ChangeSet, error) {
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fh, err := os.Open(f.path)
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if err != nil {
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return nil, err
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}
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defer fh.Close()
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b, err := ioutil.ReadAll(fh)
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if err != nil {
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return nil, err
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}
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info, err := fh.Stat()
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if err != nil {
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return nil, err
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}
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cs := &source.ChangeSet{
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Format: format(f.path, f.opts.Encoder),
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Source: f.String(),
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Timestamp: info.ModTime(),
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Data: b,
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}
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cs.Checksum = cs.Sum()
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return cs, nil
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}
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func (f *file) String() string {
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return "file"
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}
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func (f *file) Watch() (source.Watcher, error) {
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if _, err := os.Stat(f.path); err != nil {
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return nil, err
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}
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return newWatcher(f)
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}
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func (f *file) Write(cs *source.ChangeSet) error {
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return nil
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}
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func NewSource(opts ...source.Option) source.Source {
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options := source.NewOptions(opts...)
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path := DefaultPath
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f, ok := options.Context.Value(filePathKey{}).(string)
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if ok {
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path = f
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}
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return &file{opts: options, path: path}
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}
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