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fix FIREBASE_DATABASE_EMULATOR_HOST not working #578

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fix FIREBASE_DATABASE_EMULATOR_HOST not working #578

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32 changes: 18 additions & 14 deletions db/db.go
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Original file line number Diff line number Diff line change
Expand Up @@ -174,10 +174,6 @@ func parseURLConfig(dbURL string) (*dbURLConfig, bool, error) {

environmentEmulatorURL := os.Getenv(emulatorDatabaseEnvVar)
if environmentEmulatorURL != "" {
parsedURL, err = url.ParseRequestURI(environmentEmulatorURL)
if err != nil {
return nil, false, fmt.Errorf("%s: %w", environmentEmulatorURL, errInvalidURL)
}
cfg, err := parseEmulatorHost(environmentEmulatorURL, parsedURL)
return cfg, true, err
}
Expand All @@ -192,23 +188,31 @@ func parseURLConfig(dbURL string) (*dbURLConfig, bool, error) {
}, false, nil
}

func parseEmulatorHost(rawEmulatorHostURL string, parsedEmulatorHost *url.URL) (*dbURLConfig, error) {
if strings.Contains(rawEmulatorHostURL, "//") {
func parseEmulatorHost(rawEmulatorHostURL string, parsedDbURL *url.URL) (*dbURLConfig, error) {
parsedEmulatorURL, err := url.ParseRequestURI("http://" + rawEmulatorHostURL)
if err != nil {
return nil, fmt.Errorf(`invalid %s: "%s". It must follow format "host:port": %w`, emulatorDatabaseEnvVar, rawEmulatorHostURL, errInvalidURL)
}

baseURL := strings.Replace(rawEmulatorHostURL, fmt.Sprintf("?%s", parsedEmulatorHost.RawQuery), "", -1)
if parsedEmulatorHost.Scheme != "http" {
// FIREBASE_DATABASE_EMULATOR_HOST in doc https://firebase.google.com/docs/emulator-suite/connect_rtdb#admin_sdks
// Format should only be host:port, "127.0.0.1:9000"
baseURL := parsedEmulatorURL.Host
if parsedDbURL.Scheme != "http" {
baseURL = fmt.Sprintf("http://%s", baseURL)
}

namespace := parsedEmulatorHost.Query().Get(emulatorNamespaceParam)
namespace := parsedDbURL.Query().Get(emulatorNamespaceParam)
if namespace == "" {
if strings.Contains(rawEmulatorHostURL, ".") {
if strings.Contains(rawEmulatorHostURL, ".") && !strings.Contains(rawEmulatorHostURL, "127.0.0.1") {
namespace = strings.Split(rawEmulatorHostURL, ".")[0]
}
if namespace == "" {
return nil, fmt.Errorf(`invalid database URL: "%s". Database URL must be a valid URL to a Firebase Realtime Database instance (include ?ns=<db-name> query param)`, parsedEmulatorHost)
if namespace == "" {
return nil, fmt.Errorf(`invalid database URL: "%s". Database URL must be a valid URL to a Firebase Realtime Database instance (Emulator URL include ?ns=<db-name> query param, or Real DB URL in Firebase Console with https://<db-name>.firebaseio.com)`, parsedDbURL)
}

} else {
namespace = strings.Split(parsedDbURL.Host, ".")[0]
if namespace == "" {
return nil, fmt.Errorf(`invalid database URL: "%s". Database URL must be a valid URL to a Firebase Realtime Database instance (Emulator URL include ?ns=<db-name> query param, or Real DB URL in Firebase Console with https://<db-name>.firebaseio.com)`, parsedDbURL)
}
}
}

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