README
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External
This package provides implementations of External option for EnvConf parsing process.
Implement your own external or use any of already implemented
Usage
json := `{"foo":"bar"}`
tc := struct {
Foo string `env:"ENV_FOO"`
}{}
err := envconf.Parse(&tc,
option.WithExternal(jsonconf.Json([]byte(json))))
If env variable is it not specified for Foo variable, EnvConf will define it from json input.
Wrapped external
- json (encoding/json)
- yaml (gopkg.in/yaml.v3)
Documentation
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Index ¶
Constants ¶
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Variables ¶
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Functions ¶
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Types ¶
type External ¶ added in v1.4.0
type External interface {
// TagName is key name in golang struct tag (json, yaml, toml etc.).
TagName() []string
// Unmarshal parses the external data and stores the result
// in the value pointed to by v.
// Usually, it just wraps the existing `Unmarshal` function of third-party libraries
Unmarshal(v interface{}) error
}
External config source Implementation of this interface should be able to `Unmarshal` data into map[string]interface{}, where interface{} should be also same map type for the nested structures
type ExternalConfigMapper ¶ added in v1.4.0
type ExternalConfigMapper struct {
// contains filtered or unexported fields
}
func NewExternalConfigMapper ¶ added in v1.4.0
func NewExternalConfigMapper(ext External) *ExternalConfigMapper
func (*ExternalConfigMapper) Data ¶ added in v1.4.0
func (c *ExternalConfigMapper) Data() ExternalSource
func (*ExternalConfigMapper) Unmarshal ¶ added in v1.4.0
func (c *ExternalConfigMapper) Unmarshal(v interface{}) error
type ExternalSource ¶ added in v1.4.0
func AsExternalSource ¶ added in v1.4.0
func AsExternalSource(name string, es ExternalSource) ExternalSource
type NilContainer ¶ added in v1.4.0
type NilContainer struct{}
func (NilContainer) Read ¶ added in v1.4.0
func (NilContainer) Read(index string) (interface{}, bool)
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