TUN-528: Move cloudflared into a separate repo

vendor/github.com/getsentry/raven-go/errors.go

@@ -0,0 +1,60 @@
+package raven
+
+type causer interface {
+	Cause() error
+}
+
+type errWrappedWithExtra struct {
+	err       error
+	extraInfo map[string]interface{}
+}
+
+func (ewx *errWrappedWithExtra) Error() string {
+	return ewx.err.Error()
+}
+
+func (ewx *errWrappedWithExtra) Cause() error {
+	return ewx.err
+}
+
+func (ewx *errWrappedWithExtra) ExtraInfo() Extra {
+	return ewx.extraInfo
+}
+
+// Adds extra data to an error before reporting to Sentry
+func WrapWithExtra(err error, extraInfo map[string]interface{}) error {
+	return &errWrappedWithExtra{
+		err:       err,
+		extraInfo: extraInfo,
+	}
+}
+
+type ErrWithExtra interface {
+	Error() string
+	Cause() error
+	ExtraInfo() Extra
+}
+
+// Iteratively fetches all the Extra data added to an error,
+// and it's underlying errors. Extra data defined first is
+// respected, and is not overridden when extracting.
+func extractExtra(err error) Extra {
+	extra := Extra{}
+
+	currentErr := err
+	for currentErr != nil {
+		if errWithExtra, ok := currentErr.(ErrWithExtra); ok {
+			for k, v := range errWithExtra.ExtraInfo() {
+				extra[k] = v
+			}
+		}
+
+		if errWithCause, ok := currentErr.(causer); ok {
+			currentErr = errWithCause.Cause()
+		} else {
+			currentErr = nil
+		}
+	}
+
+	return extra
+}