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84 lines
2.5 KiB
84 lines
2.5 KiB
4 years ago
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/*
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Copyright © 2020 The k3d Author(s)
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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*/
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package config
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import (
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"fmt"
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"strings"
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log "github.com/sirupsen/logrus"
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"github.com/spf13/viper"
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conf "github.com/rancher/k3d/v4/pkg/config/v1alpha1"
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k3d "github.com/rancher/k3d/v4/pkg/types"
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)
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func ReadConfig(file string) (conf.Config, error) {
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cfgViper := viper.New()
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cfgViper.SetConfigFile(file)
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cfgViper.SetConfigType("yaml")
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cfgViper.SetEnvPrefix(k3d.DefaultObjectNamePrefix)
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cfgViper.SetEnvKeyReplacer(strings.NewReplacer("-", "_"))
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cfgViper.AutomaticEnv()
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// try to read config into memory (viper map structure)
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if err := cfgViper.ReadInConfig(); err != nil {
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if _, ok := err.(viper.ConfigFileNotFoundError); ok {
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log.Errorln("No config file found!")
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return nil, err
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}
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// config file found but some other error happened
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log.Debugf("Failed to read config file: %+v", cfgViper.ConfigFileUsed())
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return nil, err
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}
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var cfg conf.Config
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// determine config kind
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switch strings.ToLower(cfgViper.GetString("kind")) {
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case "simple":
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cfg = conf.SimpleConfig{}
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case "cluster":
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cfg = conf.ClusterConfig{}
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case "clusterlist":
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cfg = conf.ClusterListConfig{}
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case "":
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return nil, fmt.Errorf("Missing `kind` in config file")
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default:
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return nil, fmt.Errorf("Unknown `kind` '%s' in config file", cfgViper.GetString("kind"))
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}
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if err := cfgViper.Unmarshal(&cfg); err != nil {
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log.Errorln("Failed to unmarshal File config")
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return nil, err
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}
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log.Infof("Using Config: %s", cfgViper.ConfigFileUsed())
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return cfg, nil
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}
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