andrey
01d707ccbf
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75 lines
1.4 KiB
Go
75 lines
1.4 KiB
Go
package handler
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import (
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"context"
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"fmt"
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"strings"
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"gitoa.ru/go-4devs/config"
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"gitoa.ru/go-4devs/config/processor/env"
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"gitoa.ru/go-4devs/config/value"
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)
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const (
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envPreffix = "%env("
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envSuffix = ")%"
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)
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type EnvOption func(*EnvHandler)
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func WithEnvName(in string) EnvOption {
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return func(eh *EnvHandler) {
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eh.name = in
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}
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}
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func WithEnvProcessor(proc config.Processor) EnvOption {
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return func(eh *EnvHandler) {
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eh.Processor = proc
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}
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}
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func Env(parent config.Provider, opts ...EnvOption) EnvHandler {
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handler := EnvHandler{
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Provider: parent,
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Processor: config.ProcessFunc(env.Env),
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name: "env:" + parent.Name(),
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}
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for _, opt := range opts {
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opt(&handler)
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}
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return handler
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}
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type EnvHandler struct {
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config.Provider
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config.Processor
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name string
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}
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func (e EnvHandler) Name() string {
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return e.name
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}
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func (e EnvHandler) Value(ctx context.Context, key ...string) (config.Value, error) {
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val, err := e.Provider.Value(ctx, key...)
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if err != nil {
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return nil, fmt.Errorf("get %v:%w", e.Name(), err)
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}
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data, serr := val.ParseString()
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if serr != nil || !strings.HasPrefix(data, envPreffix) || !strings.HasSuffix(data, envSuffix) {
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return val, nil //nolint:nilerr
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}
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pval, perr := e.Process(ctx, value.String(data[len(envPreffix):len(data)-len(envSuffix)]))
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if perr != nil {
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return nil, fmt.Errorf("process[%v]:%w", e.Name(), perr)
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}
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return pval, nil
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}
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