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load.go
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load.go
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package config
import (
"fmt"
"os"
"dario.cat/mergo"
"github.com/foomo/posh/pkg/config"
"github.com/foomo/posh/pkg/log"
"github.com/pkg/errors"
"github.com/spf13/viper"
)
func Load(l log.Logger) error {
var errNotFound viper.ConfigFileNotFoundError
var settings map[string]interface{}
if value := os.Getenv("POSH_ROOT_CONFIG_PATH"); value != "" {
c := viper.NewWithOptions(viper.KeyDelimiter("\\"))
c.AddConfigPath(value)
c.SetConfigType("yaml")
c.SetConfigName(".posh")
if err := c.ReadInConfig(); errors.As(err, &errNotFound) {
// continue
} else if err != nil {
return err
} else if err := mergo.Merge(&settings, c.AllSettings(), mergo.WithOverride, mergo.WithAppendSlice); err != nil {
return err
} else {
l.Debug("using root config file:", c.ConfigFileUsed())
}
}
{ // load config
c := viper.NewWithOptions(viper.KeyDelimiter("\\"))
c.AddConfigPath(".")
c.SetConfigType("yaml")
c.SetConfigName(".posh")
if err := c.ReadInConfig(); errors.As(err, &errNotFound) {
// continue
} else if err != nil {
return err
} else if err := mergo.Merge(&settings, c.AllSettings(), mergo.WithOverride, mergo.WithAppendSlice); err != nil {
return err
} else {
l.Debug("using config file:", c.ConfigFileUsed())
}
}
{ // load override
c := viper.NewWithOptions(viper.KeyDelimiter("\\"))
c.AddConfigPath(".")
c.SetConfigType("yaml")
c.SetConfigName(".posh.override")
if err := c.ReadInConfig(); errors.As(err, &errNotFound) {
// continue
} else if err != nil {
return err
} else if err := mergo.Merge(&settings, c.AllSettings(), mergo.WithOverride, mergo.WithAppendSlice); err != nil {
return err
} else {
l.Debug("using override config file:", c.ConfigFileUsed())
}
}
if err := viper.MergeConfigMap(settings); err != nil {
return errors.Wrap(err, "failed to merge config map")
}
// viper.Debug()
// validate version
if v := viper.GetString("version"); v != Version {
return fmt.Errorf("invalid config version: %s (%s)", v, Version)
}
// set configured env
var env config.Env
if err := viper.UnmarshalKey("env", &env); err != nil {
l.Warn("failed to load env:", err.Error())
} else {
for _, value := range env {
if err := os.Setenv(value.Name, os.ExpandEnv(value.Value)); err != nil {
return err
}
}
}
return nil
}