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/*
GoToSocial
Copyright (C) 2021 GoToSocial Authors admin@gotosocial.org
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package config
import (
"fmt"
"os"
"gopkg.in/yaml.v2"
)
// Config pulls together all the configuration needed to run gotosocial
type Config struct {
LogLevel string `yaml:"logLevel"`
ApplicationName string `yaml:"applicationName"`
DBConfig *DBConfig `yaml:"db"`
}
// New returns a new config, or an error if something goes amiss.
// The path parameter is optional, for loading a configuration json from the given path.
func New(path string) (*Config, error) {
config := &Config{
DBConfig: &DBConfig{},
}
if path != "" {
var err error
if config, err = loadFromFile(path); err != nil {
return nil, fmt.Errorf("error creating config: %s", err)
}
}
return config, nil
}
// loadFromFile takes a path to a yaml file and attempts to load a Config object from it
func loadFromFile(path string) (*Config, error) {
bytes, err := os.ReadFile(path)
if err != nil {
return nil, fmt.Errorf("could not read file at path %s: %s", path, err)
}
config := &Config{}
if err := yaml.Unmarshal(bytes, config); err != nil {
return nil, fmt.Errorf("could not unmarshal file at path %s: %s", path, err)
}
return config, nil
}
// ParseFlags sets flags on the config using the provided Flags object
func (c *Config) ParseFlags(f KeyedFlags) {
fn := GetFlagNames()
// For all of these flags, we only want to set them on the config if:
//
// a) They haven't been set at all in the config file we already parsed,
// and so we take the default from the flags object.
//
// b) They may have been set in the config, but they've *also* been set explicitly
// as a command-line argument or an env variable, which takes priority.
// general flags
if c.LogLevel == "" || f.IsSet(fn.LogLevel) {
c.LogLevel = f.String(fn.LogLevel)
}
if c.ApplicationName == "" || f.IsSet(fn.ApplicationName) {
c.ApplicationName = f.String(fn.ApplicationName)
}
// db flags
if c.DBConfig.Type == "" || f.IsSet(fn.DbType) {
c.DBConfig.Type = f.String(fn.DbType)
}
if c.DBConfig.Address == "" || f.IsSet(fn.DbAddress) {
c.DBConfig.Address = f.String(fn.DbAddress)
}
if c.DBConfig.Port == 0 || f.IsSet(fn.DbPort) {
c.DBConfig.Port = f.Int(fn.DbPort)
}
if c.DBConfig.User == "" || f.IsSet(fn.DbUser) {
c.DBConfig.User = f.String(fn.DbUser)
}
if c.DBConfig.Password == "" || f.IsSet(fn.DbPassword) {
c.DBConfig.Password = f.String(fn.DbPassword)
}
if c.DBConfig.Database == "" || f.IsSet(fn.DbDatabase) {
c.DBConfig.Database = f.String(fn.DbDatabase)
}
}
// KeyedFlags is a wrapper for any type that can store keyed flags and give them back.
// HINT: This works with a urfave cli context struct ;)
type KeyedFlags interface {
String(k string) string
Int(k string) int
IsSet(k string) bool
}
// Flags is used for storing the names of the various flags used for
// initializing and storing urfavecli flag variables.
type Flags struct {
LogLevel string
ApplicationName string
ConfigPath string
DbType string
DbAddress string
DbPort string
DbUser string
DbPassword string
DbDatabase string
}
// GetFlagNames returns a struct containing the names of the various flags used for
// initializing and storing urfavecli flag variables.
func GetFlagNames() Flags {
return Flags{
LogLevel: "log-level",
ApplicationName: "application-name",
ConfigPath: "config-path",
DbType: "db-type",
DbAddress: "db-address",
DbPort: "db-port",
DbUser: "db-user",
DbPassword: "db-password",
DbDatabase: "db-database",
}
}
// GetEnvNames returns a struct containing the names of the environment variable keys used for
// initializing and storing urfavecli flag variables.
func GetEnvNames() Flags {
return Flags{
LogLevel: "GTS_LOG_LEVEL",
ApplicationName: "GTS_APPLICATION_NAME",
ConfigPath: "GTS_CONFIG_PATH",
DbType: "GTS_DB_TYPE",
DbAddress: "GTS_DB_ADDRESS",
DbPort: "GTS_DB_PORT",
DbUser: "GTS_DB_USER",
DbPassword: "GTS_DB_PASSWORD",
DbDatabase: "GTS_DB_DATABASE",
}
}
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