98 lines
2.9 KiB
Go
98 lines
2.9 KiB
Go
package config
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import (
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"fmt"
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"log"
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"os"
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"reflect"
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"strconv"
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"time"
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"github.com/hashicorp/logutils"
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)
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type Config struct {
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// time configuration
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TimeFormat string `env:"TIME_FORMAT" default:"2006-01-02 15:04:05"`
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TimeZoneLocal string `env:"TIME_ZONE" default:"America/Chicago"`
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TZoneLocal *time.Location
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TZoneUTC *time.Location
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// logging
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LogLevel int `env:"LOG_LEVEL" default:"50"`
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Log *logutils.LevelFilter
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// webserver
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WebServerPort int `env:"WEBSERVER_PORT" default:"8080"`
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WebServerIP string `env:"WEBSERVER_IP" default:"0.0.0.0"`
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WebServerReadTimeout int `env:"WEBSERVER_READ_TIMEOUT" default:"5"`
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WebServerWriteTimeout int `env:"WEBSERVER_WRITE_TIMEOUT" default:"1"`
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WebServerIdleTimeout int `env:"WEBSERVER_IDLE_TIMEOUT" default:"2"`
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}
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// DefaultConfig initializes the config variable for use with a prepared set of defaults.
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func DefaultConfig() *Config {
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return &Config{
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Log: &logutils.LevelFilter{
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Levels: []logutils.LogLevel{"TRACE", "DEBUG", "INFO", "WARNING", "ERROR"},
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Writer: os.Stderr,
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},
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}
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}
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func (cfg *Config) validate() error {
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checks := []struct {
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bad bool
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errMsg string
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}{
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{cfg.TimeFormat == "", "no TimeFormat specified"},
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{cfg.LogLevel == 0, "no LogLevel specified"},
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{cfg.WebServerPort == 0, "no WebServer.Port specified"},
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{cfg.WebServerIP == "", "no WebServer.IP specified"},
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{cfg.WebServerReadTimeout == 0, "no WebServer.ReadTimeout specified"},
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{cfg.WebServerWriteTimeout == 0, "no WebServer.WriteTimeout specified"},
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{cfg.WebServerIdleTimeout == 0, "no WebServer.IdleTimeout specified"},
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}
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for _, check := range checks {
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if check.bad {
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return fmt.Errorf("invalid config: %s", check.errMsg)
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}
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}
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return nil
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}
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func (cfg *Config) setLogLevel() {
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switch {
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case cfg.LogLevel <= 20:
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cfg.Log.SetMinLevel(logutils.LogLevel("ERROR"))
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case cfg.LogLevel > 20 && cfg.LogLevel <= 40:
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cfg.Log.SetMinLevel(logutils.LogLevel("WARNING"))
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case cfg.LogLevel > 40 && cfg.LogLevel <= 60:
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cfg.Log.SetMinLevel(logutils.LogLevel("INFO"))
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case cfg.LogLevel > 60 && cfg.LogLevel <= 80:
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cfg.Log.SetMinLevel(logutils.LogLevel("DEBUG"))
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case cfg.LogLevel > 80:
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cfg.Log.SetMinLevel(logutils.LogLevel("TRACE"))
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}
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log.SetOutput(cfg.Log)
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}
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func (cfg *Config) printRunningConfig(cfgInfo []StructInfo) {
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log.Printf("[DEBUG] Current Running Configuration Values:")
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for _, info := range cfgInfo {
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switch info.Type.String() {
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case "string":
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p := reflect.ValueOf(cfg).Elem().FieldByName(info.Name).Addr().Interface().(*string)
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log.Printf("[DEBUG]\t%s\t\t= %s\n", info.Alt, *p)
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case "bool":
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p := reflect.ValueOf(cfg).Elem().FieldByName(info.Name).Addr().Interface().(*bool)
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log.Printf("[DEBUG]\t%s\t\t= %s\n", info.Alt, strconv.FormatBool(*p))
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case "int":
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p := reflect.ValueOf(cfg).Elem().FieldByName(info.Name).Addr().Interface().(*int)
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log.Printf("[DEBUG]\t%s\t\t= %s\n", info.Alt, strconv.FormatInt(int64(*p), 10))
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}
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}
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}
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