podman healthcheck run (phase 1)

Add the ability to manually run a container's healthcheck command.
This is only the first phase of implementing the healthcheck.
Subsequent pull requests will deal with the exposing the results and
history of healthchecks as well as the scheduling.

Signed-off-by: baude <bbaude@redhat.com>

1 files changed, 25 insertions, 0 deletions

diff --git a/cmd/podman/create.go b/cmd/podman/create.go
index 129c886b2..a7b9bbf31 100644
--- a/cmd/podman/create.go
+++ b/cmd/podman/create.go
@@ -12,6 +12,7 @@ import (
 	"strings"
 	"syscall"
 
+	"github.com/containers/image/manifest"
 	"github.com/containers/libpod/cmd/podman/cliconfig"
 	"github.com/containers/libpod/cmd/podman/libpodruntime"
 	"github.com/containers/libpod/cmd/podman/shared"
@@ -117,6 +118,10 @@ func createInit(c *cliconfig.PodmanCommand) error {
 }
 
 func createContainer(c *cliconfig.PodmanCommand, runtime *libpod.Runtime) (*libpod.Container, *cc.CreateConfig, error) {
+	var (
+		hasHealthCheck bool
+		healthCheck    *manifest.Schema2HealthConfig
+	)
 	if c.Bool("trace") {
 		span, _ := opentracing.StartSpanFromContext(Ctx, "createContainer")
 		defer span.Finish()
@@ -163,12 +168,32 @@ func createContainer(c *cliconfig.PodmanCommand, runtime *libpod.Runtime) (*libp
 		} else {
 			imageName = newImage.ID()
 		}
+
+		// add healthcheck if it exists AND is correct mediatype
+		_, mediaType, err := newImage.Manifest(ctx)
+		if err != nil {
+			return nil, nil, errors.Wrapf(err, "unable to determine mediatype of image %s", newImage.ID())
+		}
+		if mediaType == manifest.DockerV2Schema2MediaType {
+			healthCheck, err = newImage.GetHealthCheck(ctx)
+			if err != nil {
+				return nil, nil, errors.Wrapf(err, "unable to get healthcheck for %s", c.InputArgs[0])
+			}
+			if healthCheck != nil {
+				hasHealthCheck = true
+			}
+		}
 	}
 	createConfig, err := parseCreateOpts(ctx, c, runtime, imageName, data)
 	if err != nil {
 		return nil, nil, err
 	}
 
+	// Because parseCreateOpts does derive anything from the image, we add health check
+	// at this point. The rest is done by WithOptions.
+	createConfig.HasHealthCheck = hasHealthCheck
+	createConfig.HealthCheck = healthCheck
+
 	ctr, err := createContainerFromCreateConfig(runtime, createConfig, ctx, nil)
 	if err != nil {
 		return nil, nil, err