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63 lines
981 B
63 lines
981 B
4 years ago
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package env
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import (
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"os"
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"strings"
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"github.com/go-kratos/kratos/v2/config"
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)
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type env struct {
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prefixs []string
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}
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func NewSource(prefixs ...string) config.Source {
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return &env{prefixs: prefixs}
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}
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func (e *env) Load() (kv []*config.KeyValue, err error) {
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for _, envstr := range os.Environ() {
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var k, v string
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subs := strings.SplitN(envstr, "=", 2)
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k = subs[0]
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if len(subs) > 1 {
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v = subs[1]
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}
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if len(e.prefixs) > 0 {
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p, ok := matchPrefix(e.prefixs, envstr)
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if !ok {
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continue
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}
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// trim prefix
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k = k[len(p):]
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if k[0] == '_' {
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k = k[1:]
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}
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}
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kv = append(kv, &config.KeyValue{
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Key: k,
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Value: []byte(v),
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})
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}
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return
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}
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func (e *env) Watch() (config.Watcher, error) {
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w, err := NewWatcher()
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if err != nil {
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return nil, err
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}
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return w, nil
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}
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func matchPrefix(prefixs []string, s string) (string, bool) {
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for _, p := range prefixs {
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if strings.HasPrefix(s, p) {
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return p, true
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}
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}
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return "", false
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}
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