Renames, style changes and unexports (#3)

error.go

@@ -0,0 +1,124 @@
+package scaleset
+
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+	"strings"
+)
+
+// Header names for request IDs
+const (
+	headerActionsActivityID = "ActivityId"
+	headerGitHubRequestID   = "X-GitHub-Request-Id"
+)
+
+type GitHubAPIError struct {
+	StatusCode int
+	RequestID  string
+	Err        error
+}
+
+func (e *GitHubAPIError) Error() string {
+	return fmt.Sprintf("github api error: StatusCode %d, RequestID %q: %v", e.StatusCode, e.RequestID, e.Err)
+}
+
+func (e *GitHubAPIError) Unwrap() error {
+	return e.Err
+}
+
+type ActionsError struct {
+	ActivityID string
+	StatusCode int
+	Err        error
+}
+
+func (e *ActionsError) Error() string {
+	return fmt.Sprintf("actions error: StatusCode %d, AcivityId %q: %v", e.StatusCode, e.ActivityID, e.Err)
+}
+
+func (e *ActionsError) Unwrap() error {
+	return e.Err
+}
+
+func (e *ActionsError) IsException(target string) bool {
+	if ex, ok := e.Err.(*ActionsExceptionError); ok {
+		return strings.Contains(ex.ExceptionName, target)
+	}
+	return false
+}
+
+type ActionsExceptionError struct {
+	ExceptionName string `json:"typeName,omitempty"`
+	Message       string `json:"message,omitempty"`
+}
+
+func (e *ActionsExceptionError) Error() string {
+	return fmt.Sprintf("%s: %s", e.ExceptionName, e.Message)
+}
+
+func parseActionsErrorFromResponse(response *http.Response) error {
+	if response.ContentLength == 0 {
+		return &ActionsError{
+			ActivityID: response.Header.Get(headerActionsActivityID),
+			StatusCode: response.StatusCode,
+			Err:        errors.New("unknown exception"),
+		}
+	}
+
+	body, err := io.ReadAll(response.Body)
+	if err != nil {
+		return &ActionsError{
+			ActivityID: response.Header.Get(headerActionsActivityID),
+			StatusCode: response.StatusCode,
+			Err:        err,
+		}
+	}
+
+	body = trimByteOrderMark(body)
+	contentType, ok := response.Header["Content-Type"]
+	if ok && len(contentType) > 0 && strings.Contains(contentType[0], "text/plain") {
+		message := string(body)
+		return &ActionsError{
+			ActivityID: response.Header.Get(headerActionsActivityID),
+			StatusCode: response.StatusCode,
+			Err:        errors.New(message),
+		}
+	}
+
+	var exception ActionsExceptionError
+	if err := json.Unmarshal(body, &exception); err != nil {
+		return &ActionsError{
+			ActivityID: response.Header.Get(headerActionsActivityID),
+			StatusCode: response.StatusCode,
+			Err:        err,
+		}
+	}
+
+	return &ActionsError{
+		ActivityID: response.Header.Get(headerActionsActivityID),
+		StatusCode: response.StatusCode,
+		Err:        &exception,
+	}
+}
+
+type MessageQueueTokenExpiredError struct {
+	activityID string
+	statusCode int
+	msg        string
+}
+
+func (e *MessageQueueTokenExpiredError) Error() string {
+	return fmt.Sprintf("MessageQueueTokenExpiredError: AcivityId %q, StatusCode %d: %s", e.activityID, e.statusCode, e.msg)
+}
+
+type HttpClientSideError struct {
+	msg  string
+	Code int
+}
+
+func (e *HttpClientSideError) Error() string {
+	return e.msg
+}