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flyctl.go
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flyctl.go
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package flyctl
import (
"fmt"
"os"
"path"
"github.com/spf13/viper"
fly "github.com/superfly/fly-go"
"github.com/superfly/flyctl/helpers"
"github.com/superfly/flyctl/internal/instrument"
"github.com/superfly/flyctl/terminal"
"gopkg.in/yaml.v2"
)
var configDir string
// InitConfig - Initialises config file for Viper
func InitConfig() {
var dir string
dir, err := helpers.GetConfigDirectory()
if err != nil {
fmt.Println("Error accessing home directory", err)
return
}
if err = initConfigDir(dir); err != nil {
fmt.Println(
fmt.Sprintf("Error accessing config directory at %s", dir),
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(dir string) error {
if !helpers.DirectoryExists(dir) {
if err := os.MkdirAll(dir, 0o700); err != nil {
return err
}
}
configDir = dir
return nil
}
// viper keys that shouldn't be loaded from the environment
var noEnvKeys = map[string]bool{
ConfigAPIToken: true,
}
func initViper() {
if err := loadConfig(); err != nil {
fmt.Println("Error loading config", err)
}
viper.SetDefault(ConfigAPIBaseURL, "https://api.fly.io")
viper.SetDefault(ConfigFlapsBaseUrl, "https://api.machines.dev")
viper.SetDefault(ConfigRegistryHost, "registry.fly.io")
viper.SetDefault(ConfigWireGuardWebsockets, true)
viper.BindEnv(ConfigVerboseOutput, "VERBOSE")
viper.BindEnv(ConfigGQLErrorLogging, "GQLErrorLogging")
viper.SetEnvPrefix("FLY")
for _, key := range viper.AllKeys() {
if noEnvKeys[key] {
continue
}
viper.BindEnv(key)
}
fly.SetBaseURL(viper.GetString(ConfigAPIBaseURL))
fly.SetErrorLog(viper.GetBool(ConfigGQLErrorLogging))
fly.SetInstrumenter(instrument.ApiAdapter)
}
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
}
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 os.WriteFile(ConfigFilePath(), data, 0o600)
}
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
}