Ensure that `podman play kube` actually reports errors

In 2.2.x, we moved `play kube` to use the Start() API for pods,
which reported errors in a different way (all containers are
started in parallel, and then results reported as a block). The
migration attempted to preserve compatibility by returning only
one error, but that's not really a viable option as it can
obscure the real reason that a pod is failing. Further, the code
was not correctly handling the API's errors - Pod Start() will,
on any container error, return a map of container ID to error
populated for all container errors *and* return ErrPodPartialFail
for overall error - the existing code did not handle the partial
failure error and thus would never return container errors.

Refactor the `play kube` API to include a set of errors for
containers in each pod, so we can return all errors that occurred
to the frontend and print them for the user, and correct the
backend code so container errors are actually forwarded.

Signed-off-by: Matthew Heon <matthew.heon@pm.me>

1 files changed, 15 insertions, 0 deletions

diff --git a/cmd/podman/play/kube.go b/cmd/podman/play/kube.go
index db7280b1d..1f54db203 100644
--- a/cmd/podman/play/kube.go
+++ b/cmd/podman/play/kube.go
@@ -12,6 +12,7 @@ import (
 	"github.com/containers/podman/v2/cmd/podman/utils"
 	"github.com/containers/podman/v2/pkg/domain/entities"
 	"github.com/containers/podman/v2/pkg/util"
+	"github.com/pkg/errors"
 	"github.com/spf13/cobra"
 )
 
@@ -130,6 +131,8 @@ func kube(cmd *cobra.Command, args []string) error {
 		}
 	}
 
+	ctrsFailed := 0
+
 	for _, pod := range report.Pods {
 		fmt.Printf("Pod:\n")
 		fmt.Println(pod.ID)
@@ -145,9 +148,21 @@ func kube(cmd *cobra.Command, args []string) error {
 		for _, ctr := range pod.Containers {
 			fmt.Println(ctr)
 		}
+		ctrsFailed += len(pod.ContainerErrors)
+		// If We have errors, add a newline
+		if len(pod.ContainerErrors) > 0 {
+			fmt.Println()
+		}
+		for _, err := range pod.ContainerErrors {
+			fmt.Fprintf(os.Stderr, err+"\n")
+		}
 		// Empty line for space for next block
 		fmt.Println()
 	}
 
+	if ctrsFailed > 0 {
+		return errors.Errorf("failed to start %d containers", ctrsFailed)
+	}
+
 	return nil
 }