1 files changed, 57 insertions, 0 deletions
diff --git a/workhorse/internal/zipartifacts/errors.go b/workhorse/internal/zipartifacts/errors.go
new file mode 100644
index 00000000000..162816618f8
--- /dev/null
+++ b/workhorse/internal/zipartifacts/errors.go
@@ -0,0 +1,57 @@
+package zipartifacts
+
+import (
+	"errors"
+)
+
+// These are exit codes used by subprocesses in cmd/gitlab-zip-xxx. We also use
+// them to map errors and error messages that we use as label in Prometheus.
+const (
+	CodeNotZip = 10 + iota
+	CodeEntryNotFound
+	CodeArchiveNotFound
+	CodeLimitsReached
+	CodeUnknownError
+)
+
+var (
+	ErrorCode = map[int]error{
+		CodeNotZip:          errors.New("zip archive format invalid"),
+		CodeEntryNotFound:   errors.New("zip entry not found"),
+		CodeArchiveNotFound: errors.New("zip archive not found"),
+		CodeLimitsReached:   errors.New("zip processing limits reached"),
+		CodeUnknownError:    errors.New("zip processing unknown error"),
+	}
+
+	ErrorLabel = map[int]string{
+		CodeNotZip:          "archive_invalid",
+		CodeEntryNotFound:   "entry_not_found",
+		CodeArchiveNotFound: "archive_not_found",
+		CodeLimitsReached:   "limits_reached",
+		CodeUnknownError:    "unknown_error",
+	}
+
+	ErrBadMetadata = errors.New("zip artifacts metadata invalid")
+)
+
+// ExitCodeByError find an os.Exit code for a corresponding error.
+// CodeUnkownError in case it can not be found.
+func ExitCodeByError(err error) int {
+	for c, e := range ErrorCode {
+		if err == e {
+			return c
+		}
+	}
+
+	return CodeUnknownError
+}
+
+// ErrorLabelByCode returns a Prometheus counter label associated with an exit code.
+func ErrorLabelByCode(code int) string {
+	label, ok := ErrorLabel[code]
+	if ok {
+		return label
+	}
+
+	return ErrorLabel[CodeUnknownError]
+}