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|
package container
import (
"fmt"
"time"
"github.com/spf13/viper"
"golang.org/x/exp/slog"
)
type Config struct {
GracePeriod time.Duration
PrintGraph bool
LogLevel slog.Leveler
}
const (
endureKey = "endure"
defaultGracePeriod = time.Second * 30
)
// NewConfig creates endure container configuration.
func NewConfig(cfgFile string) (*Config, error) {
v := viper.New()
v.SetConfigFile(cfgFile)
err := v.ReadInConfig()
if err != nil {
return nil, err
}
if !v.IsSet(endureKey) {
return &Config{ // return config with defaults
GracePeriod: defaultGracePeriod,
PrintGraph: false,
LogLevel: slog.LevelError,
}, nil
}
rrCfgEndure := struct {
GracePeriod time.Duration `mapstructure:"grace_period"`
PrintGraph bool `mapstructure:"print_graph"`
LogLevel string `mapstructure:"log_level"`
}{}
err = v.UnmarshalKey(endureKey, &rrCfgEndure)
if err != nil {
return nil, err
}
if rrCfgEndure.GracePeriod == 0 {
rrCfgEndure.GracePeriod = defaultGracePeriod
}
if rrCfgEndure.LogLevel == "" {
rrCfgEndure.LogLevel = "error"
}
logLevel, err := parseLogLevel(rrCfgEndure.LogLevel)
if err != nil {
return nil, err
}
return &Config{
GracePeriod: rrCfgEndure.GracePeriod,
PrintGraph: rrCfgEndure.PrintGraph,
LogLevel: logLevel,
}, nil
}
func parseLogLevel(s string) (slog.Leveler, error) {
switch s {
case "debug":
return slog.LevelDebug, nil
case "info":
return slog.LevelInfo, nil
case "warn", "warning":
return slog.LevelWarn, nil
case "error":
return slog.LevelError, nil
}
return slog.LevelInfo, fmt.Errorf(`unknown log level "%s" (allowed: debug, info, warn, error, panic, fatal)`, s)
}
|
