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package configuration
import (
"errors"
"fmt"
"github.com/knadh/koanf"
"github.com/knadh/koanf/parsers/yaml"
"github.com/knadh/koanf/providers/env"
"github.com/knadh/koanf/providers/file"
"github.com/authelia/authelia/internal/configuration/schema"
"github.com/authelia/authelia/internal/configuration/validator"
)
// NewYAMLFileSource returns a Source configured to load from a specified YAML path. If there is an issue accessing this
// path it also returns an error.
func NewYAMLFileSource(path string) (source *YAMLFileSource) {
return &YAMLFileSource{
koanf: koanf.New(constDelimiter),
path: path,
}
}
// NewYAMLFileSources returns a slice of Source configured to load from specified YAML files.
func NewYAMLFileSources(paths []string) (sources []*YAMLFileSource) {
for _, path := range paths {
source := NewYAMLFileSource(path)
sources = append(sources, source)
}
return sources
}
// Name of the Source.
func (s YAMLFileSource) Name() (name string) {
return fmt.Sprintf("yaml file(%s)", s.path)
}
// Merge the YAMLFileSource koanf.Koanf into the provided one.
func (s *YAMLFileSource) Merge(ko *koanf.Koanf, _ *schema.StructValidator) (err error) {
return ko.Merge(s.koanf)
}
// Load the Source into the YAMLFileSource koanf.Koanf.
func (s *YAMLFileSource) Load(_ *schema.StructValidator) (err error) {
if s.path == "" {
return errors.New("invalid yaml path source configuration")
}
return s.koanf.Load(file.Provider(s.path), yaml.Parser())
}
// NewEnvironmentSource returns a Source configured to load from environment variables.
func NewEnvironmentSource(prefix, delimiter string) (source *EnvironmentSource) {
return &EnvironmentSource{
koanf: koanf.New(constDelimiter),
prefix: prefix,
delimiter: delimiter,
}
}
// Name of the Source.
func (s EnvironmentSource) Name() (name string) {
return "environment"
}
// Merge the EnvironmentSource koanf.Koanf into the provided one.
func (s *EnvironmentSource) Merge(ko *koanf.Koanf, _ *schema.StructValidator) (err error) {
return ko.Merge(s.koanf)
}
// Load the Source into the EnvironmentSource koanf.Koanf.
func (s *EnvironmentSource) Load(_ *schema.StructValidator) (err error) {
keyMap, ignoredKeys := getEnvConfigMap(validator.ValidKeys, s.prefix, s.delimiter)
return s.koanf.Load(env.ProviderWithValue(s.prefix, constDelimiter, koanfEnvironmentCallback(keyMap, ignoredKeys, s.prefix, s.delimiter)), nil)
}
// NewSecretsSource returns a Source configured to load from secrets.
func NewSecretsSource(prefix, delimiter string) (source *SecretsSource) {
return &SecretsSource{
koanf: koanf.New(constDelimiter),
prefix: prefix,
delimiter: delimiter,
}
}
// Name of the Source.
func (s SecretsSource) Name() (name string) {
return "secrets"
}
// Merge the SecretsSource koanf.Koanf into the provided one.
func (s *SecretsSource) Merge(ko *koanf.Koanf, val *schema.StructValidator) (err error) {
for _, key := range s.koanf.Keys() {
value, ok := ko.Get(key).(string)
if ok && value != "" {
val.Push(fmt.Errorf(errFmtSecretAlreadyDefined, key))
}
}
return ko.Merge(s.koanf)
}
// Load the Source into the SecretsSource koanf.Koanf.
func (s *SecretsSource) Load(val *schema.StructValidator) (err error) {
keyMap := getSecretConfigMap(validator.ValidKeys, s.prefix, s.delimiter)
return s.koanf.Load(env.ProviderWithValue(s.prefix, constDelimiter, koanfEnvironmentSecretsCallback(keyMap, val)), nil)
}
// NewDefaultSources returns a slice of Source configured to load from specified YAML files.
func NewDefaultSources(filePaths []string, prefix, delimiter string) (sources []Source) {
fileSources := NewYAMLFileSources(filePaths)
for _, source := range fileSources {
sources = append(sources, source)
}
sources = append(sources, NewEnvironmentSource(prefix, delimiter))
sources = append(sources, NewSecretsSource(prefix, delimiter))
return sources
}
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