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config.go
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config.go
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// Copyright (C) 2015 Nippon Telegraph and Telephone Corporation.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
// implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package config
import (
"encoding/json"
"os"
"github.com/spf13/viper"
)
type Config struct {
*viper.Viper
}
// TODO: support env vars for overriding (https://github.com/spf13/viper#working-with-environment-variables)
// TODO: validate config with JSON schema
func ParseConfigFile(filePath string) (*Config, error) {
v := viper.New()
cfg := &Config{v}
cfg.SetDefault("init", "") // e.g. "init.sh"
cfg.SetDefault("run", "") // e.g. "run.sh"
cfg.SetDefault("clean", "") // e.g. "clean.sh"
cfg.SetDefault("validate", "") // e.g. "validate.sh"
cfg.SetDefault("explorePolicy", "dumb")
cfg.SetDefault("explorePolicyParam", map[string]interface{}{})
cfg.SetDefault("storageType", "naive")
cfg.SetDefault("notCleanIfValidationFail", false)
// Viper Issue: Default value for nested key #71 (https://github.com/spf13/viper/issues/71)
cfg.SetDefault("inspectorHandler",
map[string]interface{}{
"pb": map[string]interface{}{
// TODO: port
},
"rest": map[string]interface{}{
// TODO: port
},
})
// viper supports JSON, YAML, and TOML
cfg.SetConfigFile(filePath)
err := cfg.ReadInConfig()
return cfg, err
}
func (this *Config) DumpToJsonFile(filePath string) error {
f, err := os.Create(filePath)
if err != nil {
return err
}
defer f.Close()
enc := json.NewEncoder(f)
var m map[string]interface{}
err = this.Unmarshal(&m)
if err != nil {
return err
}
enc.Encode(m)
return err
}