/
config.go
84 lines (76 loc) · 2.23 KB
/
config.go
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// Copyright (c) 2019 Red Hat and/or its affiliates.
//
// 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 parses configuration files.
package config
import (
log "github.com/sirupsen/logrus"
"github.com/spf13/viper"
"time"
)
// Controllers holds the enabled/disabled controller types
type Controllers struct {
UNP bool
}
// Config stores the parsed configuration or defaults.
type Config struct {
LogLevel string
Controllers Controllers
Kubeconfig string
ResyncPeriod int64
EtcdEndpoints string
EtcdDialTimeout time.Duration
}
// NewConfig is the constructor for Config.
func NewConfig() *Config {
ctrl := Controllers{UNP: true}
return &Config{
LogLevel: "info",
Controllers: ctrl,
Kubeconfig: "",
ResyncPeriod: 0,
EtcdEndpoints: "http://127.0.0.1:52379",
EtcdDialTimeout: 1 * time.Second,
}
}
// Parse the configuration and store in Config.
// Defaults are returned if parsing fails.
func (c *Config) Parse(cfgPath string, cfgName string) error {
vpr := viper.New()
defaults := map[string]interface{}{
"LogLevel": c.LogLevel,
"Controllers": c.Controllers,
"Kubeconfig": c.Kubeconfig,
"ResyncPeriod": c.ResyncPeriod,
"EtcdEndpoints": c.EtcdEndpoints,
"EtcdDialTimeout": c.EtcdDialTimeout,
}
for k, v := range defaults {
vpr.SetDefault(k, v)
}
// TODO: tbd to use default paths and name
vpr.AddConfigPath(cfgPath)
vpr.SetConfigName(cfgName)
vpr.AutomaticEnv()
_ = vpr.BindEnv("EtcdEndpoints", "ETCDCTL_ENDPOINTS")
err := vpr.ReadInConfig()
if err != nil {
log.WithError(err).Warn("Failed to read config")
return err
}
err = vpr.Unmarshal(c)
if err != nil {
log.WithError(err).Warn("Failed to unmarshal config")
}
return err
}