build: relay exitcode from imagebuildah to registry

Podman does not relay exit code from buildah instead returns a generic
error code `125`. Following PR allows `podman` to relay exit code from
`imagebuildah` to `registry` as it is.

Signed-off-by: Aditya Rajan <arajan@redhat.com>

1 files changed, 26 insertions, 0 deletions

diff --git a/cmd/podman/utils/error.go b/cmd/podman/utils/error.go
index 2d58bc70d..aab1da675 100644
--- a/cmd/podman/utils/error.go
+++ b/cmd/podman/utils/error.go
@@ -1,8 +1,13 @@
 package utils
 
 import (
+	"errors"
 	"fmt"
 	"os"
+	"strconv"
+	"strings"
+
+	buildahCLI "github.com/containers/buildah/pkg/cli"
 )
 
 type OutputErrors []error
@@ -17,3 +22,24 @@ func (o OutputErrors) PrintErrors() (lastError error) {
 	}
 	return
 }
+
+/* For remote client, server does not returns error with exit code
+   instead returns a message and we cast it to a new error.
+
+   Following function performs parsing on build error and returns
+   exit status which was exepected for this current build
+*/
+func ExitCodeFromBuildError(errorMsg string) (int, error) {
+	if strings.Contains(errorMsg, "exit status") {
+		errorSplit := strings.Split(errorMsg, " ")
+		if errorSplit[len(errorSplit)-2] == "status" {
+			tmpSplit := strings.Split(errorSplit[len(errorSplit)-1], "\n")
+			exitCodeRemote, err := strconv.Atoi(tmpSplit[0])
+			if err == nil {
+				return exitCodeRemote, nil
+			}
+			return buildahCLI.ExecErrorCodeGeneric, err
+		}
+	}
+	return buildahCLI.ExecErrorCodeGeneric, errors.New("error message does not contains a valid exit code")
+}