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flyctl.go
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flyctl.go
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package flyctl
import (
"fmt"
"io/ioutil"
"os"
"path"
"path/filepath"
"github.com/spf13/viper"
"github.com/superfly/flyctl/api"
"github.com/superfly/flyctl/helpers"
"github.com/superfly/flyctl/terminal"
"gopkg.in/yaml.v2"
)
var configDir string
// InitConfig - Initialises config file for Viper
func InitConfig() {
if err := initConfigDir(); err != nil {
fmt.Println("Error accessing config directory at $HOME/.fly", err)
return
}
initViper()
}
// ConfigDir - Returns Directory holding the Config file
func ConfigDir() string {
return configDir
}
// ConfigFilePath - returns the path to the config file
func ConfigFilePath() string {
return path.Join(configDir, "config.yml")
}
func initConfigDir() error {
homeDir, err := os.UserHomeDir()
if err != nil {
return err
}
dir := filepath.Join(homeDir, ".fly")
if !helpers.DirectoryExists(dir) {
if err := os.MkdirAll(dir, 0700); err != nil {
return err
}
}
configDir = dir
return nil
}
func initViper() {
if err := loadConfig(); err != nil {
fmt.Println("Error loading config", err)
}
viper.SetDefault(ConfigAPIBaseURL, "https://api.fly.io")
viper.SetDefault(ConfigRegistryHost, "registry.fly.io")
viper.BindEnv(ConfigVerboseOutput, "VERBOSE")
viper.BindEnv(ConfigGQLErrorLogging, "GQLErrorLogging")
viper.SetEnvPrefix("FLY")
viper.AutomaticEnv()
api.SetBaseURL(viper.GetString(ConfigAPIBaseURL))
api.SetErrorLog(viper.GetBool(ConfigGQLErrorLogging))
}
func loadConfig() error {
if configDir == "" {
return nil
}
viper.SetConfigFile(ConfigFilePath())
viper.SetConfigType("yaml")
err := viper.ReadInConfig()
if err == nil {
terminal.Debug("Loaded flyctl config from", viper.ConfigFileUsed())
return nil
}
if os.IsNotExist(err) {
if migrateLegacyConfig() {
if err := SaveConfig(); err != nil {
terminal.Debug("error writing flyctl config", err)
}
}
return nil
}
return err
}
// GetAPIToken - returns the current API Token, env vars take precedence. Avoids pulling in env vars into the config.
func GetAPIToken() string {
// Are either env vars set?
// check Access token
accessToken, lookup := os.LookupEnv("FLY_ACCESS_TOKEN")
if lookup {
return accessToken
}
// check API token
apiToken, lookup := os.LookupEnv("FLY_API_TOKEN")
if lookup {
return apiToken
}
viperAuth := viper.GetString(ConfigAPIToken)
return viperAuth
}
var writeableConfigKeys = []string{ConfigAPIToken, ConfigInstaller, ConfigWireGuardState, ConfigWireGuardWebsockets, BuildKitNodeID}
func SaveConfig() error {
out := map[string]interface{}{}
for key, val := range viper.AllSettings() {
if persistConfigKey(key) {
out[key] = val
}
}
data, err := yaml.Marshal(&out)
if err != nil {
return err
}
return ioutil.WriteFile(ConfigFilePath(), data, 0600)
}
func persistConfigKey(key string) bool {
if viper.InConfig(key) {
return true
}
for _, k := range writeableConfigKeys {
if k == key {
return true
}
}
return false
}
func migrateLegacyConfig() bool {
legacy := viper.New()
legacy.SetConfigFile(path.Join(configDir, "credentials.yml"))
if err := legacy.ReadInConfig(); err != nil {
return false
}
viper.MergeConfigMap(legacy.AllSettings())
return true
}