You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
165 lines
3.2 KiB
Go
165 lines
3.2 KiB
Go
package config
|
|
|
|
import (
|
|
"errors"
|
|
"flag"
|
|
"fmt"
|
|
"log"
|
|
"os"
|
|
"sync"
|
|
|
|
"gopkg.in/yaml.v2"
|
|
)
|
|
|
|
type Config struct {
|
|
Env string `yaml:"env"`
|
|
Server struct {
|
|
Host string `yaml:"host"`
|
|
Grpc struct {
|
|
Port int `yaml:"port"`
|
|
} `yaml:"grpc"`
|
|
Rest struct {
|
|
Port int `yaml:"port"`
|
|
} `yaml:"rest"`
|
|
} `yaml:"server"`
|
|
Postgres struct {
|
|
Host string `yaml:"host"`
|
|
Port int `yaml:"port"`
|
|
Dbname string `yaml:"dbname"`
|
|
Username string `yaml:"username"`
|
|
Password string `yaml:"password"`
|
|
} `yaml:"postgres"`
|
|
Cert struct {
|
|
Path string `yaml:"path"`
|
|
} `yaml:"cert"`
|
|
Jwt struct {
|
|
Issuer string `yaml:"issuer"`
|
|
Key string `yaml:"key"`
|
|
Type string `yaml:"type"`
|
|
} `yaml:"jwt"`
|
|
}
|
|
|
|
var lock = &sync.Mutex{}
|
|
var config *Config
|
|
|
|
func GetInstance() (*Config, error) {
|
|
if config == nil {
|
|
lock.Lock()
|
|
defer lock.Unlock()
|
|
config, err := new()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return config, nil
|
|
}
|
|
return config, nil
|
|
}
|
|
|
|
func new() (*Config, error) {
|
|
cfgPath, err := parseFlag()
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
|
|
config = &Config{}
|
|
|
|
file, err := os.Open(cfgPath)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
defer file.Close()
|
|
|
|
d := yaml.NewDecoder(file)
|
|
|
|
if err := d.Decode(&config); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
err = validateConfigData(config)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return config, nil
|
|
}
|
|
|
|
func parseFlag() (string, error) {
|
|
// String that contains the configured configuration path
|
|
var configPath string
|
|
|
|
// Set up a CLI flag called "-config" to allow users
|
|
// to supply the configuration file
|
|
flag.StringVar(&configPath, "config", "./config.yaml", "path to config file")
|
|
|
|
// Actually parse the flags
|
|
flag.Parse()
|
|
|
|
//Validate the path first
|
|
if err := validateConfigPath(configPath); err != nil {
|
|
return "", err
|
|
}
|
|
|
|
return configPath, nil
|
|
}
|
|
|
|
// ValidateConfigPath just makes sure, that the path provided is a file,
|
|
// that can be read
|
|
func validateConfigPath(path string) error {
|
|
s, err := os.Stat(path)
|
|
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if s.IsDir() {
|
|
return fmt.Errorf("'%s' is a directory, not a config file", path)
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func validateConfigData(config *Config) error {
|
|
if config.Env == "" {
|
|
return errors.New("env is empty")
|
|
}
|
|
if config.Server.Host == "" {
|
|
return errors.New("server.host is empty")
|
|
}
|
|
if config.Server.Grpc.Port == 0 {
|
|
return errors.New("server.grpc.port is empty")
|
|
}
|
|
if config.Server.Rest.Port == 0 {
|
|
return errors.New("server.rest.port is empty")
|
|
}
|
|
|
|
if config.Postgres.Host == "" {
|
|
return errors.New("postgres.host is empty")
|
|
}
|
|
if config.Postgres.Port == 0 {
|
|
return errors.New("postgres.port is empty")
|
|
}
|
|
if config.Postgres.Dbname == "" {
|
|
return errors.New("postgres.dbname is empty")
|
|
}
|
|
if config.Postgres.Username == "" {
|
|
return errors.New("postgres.user is empty")
|
|
}
|
|
if config.Postgres.Password == "" {
|
|
return errors.New("postgres.pass is empty")
|
|
}
|
|
if config.Cert.Path == "" {
|
|
return errors.New("cert.path is empty")
|
|
}
|
|
if config.Jwt.Issuer == "" {
|
|
return errors.New("jwt.issuer is empty")
|
|
}
|
|
if config.Jwt.Key == "" {
|
|
return errors.New("jwt.key is empty")
|
|
}
|
|
if config.Jwt.Type == "" {
|
|
return errors.New("jwt.type is empty")
|
|
}
|
|
|
|
return nil
|
|
}
|