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scrutiny/webapp/backend/pkg/config/config.go

138 lines
4.0 KiB

package config
import (
"github.com/analogj/go-util/utils"
"github.com/analogj/scrutiny/webapp/backend/pkg/errors"
"github.com/spf13/viper"
"log"
"os"
"strings"
)
const DB_USER_SETTINGS_SUBKEY = "user"
// When initializing this class the following methods must be called:
// Config.New
// Config.Init
// This is done automatically when created via the Factory.
type configuration struct {
*viper.Viper
}
//Viper uses the following precedence order. Each item takes precedence over the item below it:
// explicit call to Set
// flag
// env
// config
// key/value store
// default
func (c *configuration) Init() error {
c.Viper = viper.New()
//set defaults
c.SetDefault("web.listen.port", "8080")
c.SetDefault("web.listen.host", "0.0.0.0")
c.SetDefault("web.listen.basepath", "")
c.SetDefault("web.src.frontend.path", "/opt/scrutiny/web")
c.SetDefault("web.database.location", "/opt/scrutiny/config/scrutiny.db")
c.SetDefault("log.level", "INFO")
c.SetDefault("log.file", "")
c.SetDefault("notify.urls", []string{})
c.SetDefault("web.influxdb.scheme", "http")
c.SetDefault("web.influxdb.host", "localhost")
c.SetDefault("web.influxdb.port", "8086")
c.SetDefault("web.influxdb.org", "scrutiny")
c.SetDefault("web.influxdb.bucket", "metrics")
c.SetDefault("web.influxdb.init_username", "admin")
c.SetDefault("web.influxdb.init_password", "password12345")
c.SetDefault("web.influxdb.token", "scrutiny-default-admin-token")
c.SetDefault("web.influxdb.tls.insecure_skip_verify", false)
c.SetDefault("web.influxdb.retention_policy", true)
//c.SetDefault("disks.include", []string{})
//c.SetDefault("disks.exclude", []string{})
//if you want to load a non-standard location system config file (~/drawbridge.yml), use ReadConfig
c.SetConfigType("yaml")
//c.SetConfigName("drawbridge")
//c.AddConfigPath("$HOME/")
//configure env variable parsing.
c.SetEnvPrefix("SCRUTINY")
c.SetEnvKeyReplacer(strings.NewReplacer("-", "_", ".", "_"))
c.AutomaticEnv()
//CLI options will be added via the `Set()` function
return c.ValidateConfig()
}
func (c *configuration) SubKeys(key string) []string {
return c.Sub(key).AllKeys()
}
func (c *configuration) Sub(key string) Interface {
config := configuration{
Viper: c.Viper.Sub(key),
}
return &config
}
func (c *configuration) ReadConfig(configFilePath string) error {
//make sure that we specify that this is the correct config path (for eventual WriteConfig() calls)
c.SetConfigFile(configFilePath)
configFilePath, err := utils.ExpandPath(configFilePath)
if err != nil {
return err
}
if !utils.FileExists(configFilePath) {
log.Printf("No configuration file found at %v. Using Defaults.", configFilePath)
return errors.ConfigFileMissingError("The configuration file could not be found.")
}
//validate config file contents
//err = c.ValidateConfigFile(configFilePath)
//if err != nil {
// log.Printf("Config file at `%v` is invalid: %s", configFilePath, err)
// return err
//}
log.Printf("Loading configuration file: %s", configFilePath)
config_data, err := os.Open(configFilePath)
if err != nil {
log.Printf("Error reading configuration file: %s", err)
return err
}
err = c.MergeConfig(config_data)
if err != nil {
return err
}
return c.ValidateConfig()
}
// This function ensures that the merged config works correctly.
func (c *configuration) ValidateConfig() error {
//the following keys are deprecated, and no longer supported
/*
- notify.filter_attributes (replaced by metrics.status.filter_attributes SETTING)
- notify.level (replaced by metrics.notify.level and metrics.status.threshold SETTING)
*/
//TODO add docs and upgrade doc.
if c.IsSet("notify.filter_attributes") {
return errors.ConfigValidationError("`notify.filter_attributes` configuration option is deprecated. Replaced by option in Dashboard Settings page")
}
if c.IsSet("notify.level") {
return errors.ConfigValidationError("`notify.level` configuration option is deprecated. Replaced by option in Dashboard Settings page")
}
return nil
}