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configs.go
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configs.go
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package courier
import (
"encoding/json"
"io/ioutil"
"os"
"errors"
"path/filepath"
"github.com/satori/go.uuid"
)
// Data abstract containing methods for saving and loading.
// Data an abstract struct used for it's functions to save and load config files.
type Data struct{}
func (d *Data) save(saveLoc string, inter interface{}) error {
// Make all the directories
if err := os.MkdirAll(filepath.Dir(saveLoc), os.ModeDir|0775); err != nil {
return err
}
data, err := json.MarshalIndent(inter, "", " ")
if err != nil {
return err
}
return ioutil.WriteFile(saveLoc, data, 0660)
}
func (d *Data) load(saveLoc string, inter interface{}) error {
if _, err := os.Stat(saveLoc); os.IsNotExist(err) {
return DefaultConfigSavedError
} else if err != nil {
return err
}
data, err := ioutil.ReadFile(saveLoc)
if err != nil {
return err
}
if err := json.Unmarshal(data, inter); err != nil {
return err
}
return nil
}
// ========== Main configuration.
// ConfigSaveLocation the location to save the config to.
var ConfigSaveLocation = "courier/config.json"
// DefaultConfigSavedError an error returned if the default config is saved.
var DefaultConfigSavedError = errors.New("the default config has been saved, please edit it")
// DefaultConfig the default configuration to save.
var DefaultConfig = Config{
Data: Data{},
Repo: "[email protected]:DankBotList/Site.git",
Ref: "refs/heads/master",
PollTimeSeconds: 20,
WebSocketPath: "/courier/ws",
AuthenticationKey: uuid.Must(uuid.NewV4()).String() + "-" + uuid.Must(uuid.NewV4()).String(),
DataFolder: "courier/data/",
}
// Config the main configuration.
type Config struct {
Data `json:"-"`
Repo string `json:"repo"`
Ref string `json:"ref"`
PollTimeSeconds int `json:"poll_time_seconds"`
WebSocketPath string `json:"web_socket_path"`
AuthenticationKey string `json:"authentication_key"`
DataFolder string `json:"data_folder"`
}
// Save saves the config.
func (c *Config) Save() error {
saveLoc, envThere := os.LookupEnv("COURIER_CONFIG")
if !envThere {
saveLoc = ConfigSaveLocation
}
return c.save(saveLoc, c)
}
// Load loads the config.
func (c *Config) Load() error {
saveLoc, envThere := os.LookupEnv("COURIER_CONFIG")
if !envThere {
saveLoc = ConfigSaveLocation
}
if err := c.load(saveLoc, c); err == DefaultConfigSavedError {
if err := DefaultConfig.Save(); err != nil {
return err
}
return DefaultConfigSavedError
} else if err != nil {
return err
}
return nil
}
// ========== Hosts.
type Host struct {
}
// HostsData the data for hosts, their locations and ID's.
type HostsData struct {
Data `json:"-"`
DataFile string `json:"-"`
Hosts []Host `json:"hosts"`
}
func (c *HostsData) SetDataFile(dataFile string) {
c.DataFile = dataFile
}
// Save saves the config.
func (c *HostsData) Save() error {
if c.DataFile == "" {
return c.save("courier/data/hosts.json", c)
} else {
return c.save(c.DataFile, c)
}
}
// Load loads the config.
func (c *HostsData) Load() error {
saveLoc := "courier/data/hosts.json"
if c.DataFile != "" {
saveLoc = c.DataFile
}
if err := c.load(saveLoc, c); err == DefaultConfigSavedError {
if err := DefaultConfig.Save(); err != nil {
return err
}
return DefaultConfigSavedError
} else if err != nil {
return err
}
return nil
}