Add support for resource memory limit to generate kube

addresses #7855

Signed-off-by: Andy Librian <andylibrian@gmail.com>

libpod/kube.go

@@ -303,12 +303,23 @@ func containerToV1Container(c *Container) (v1.Container, []v1.Volume, error) {
 	// This should not be applicable
 	//container.EnvFromSource =
 	kubeContainer.Env = envVariables
-	// TODO enable resources when we can support naming conventions
-	//container.Resources
 	kubeContainer.SecurityContext = kubeSec
 	kubeContainer.StdinOnce = false
 	kubeContainer.TTY = c.config.Spec.Process.Terminal
 
+	if c.config.Spec.Linux != nil &&
+		c.config.Spec.Linux.Resources != nil &&
+		c.config.Spec.Linux.Resources.Memory != nil &&
+		c.config.Spec.Linux.Resources.Memory.Limit != nil {
+		if kubeContainer.Resources.Limits == nil {
+			kubeContainer.Resources.Limits = v1.ResourceList{}
+		}
+
+		qty := kubeContainer.Resources.Limits.Memory()
+		qty.Set(*c.config.Spec.Linux.Resources.Memory.Limit)
+		kubeContainer.Resources.Limits[v1.ResourceMemory] = *qty
+	}
+
 	return kubeContainer, kubeVolumes, nil
 }
 

test/e2e/generate_kube_test.go

@@ -235,6 +235,31 @@ var _ = Describe("Podman generate kube", func() {
 		}
 	})
 
+	It("podman generate kube on pod with memory limit", func() {
+		podName := "testMemoryLimit"
+		podSession := podmanTest.Podman([]string{"pod", "create", "--name", podName})
+		podSession.WaitWithDefaultTimeout()
+		Expect(podSession.ExitCode()).To(Equal(0))
+
+		ctr1Name := "ctr1"
+		ctr1Session := podmanTest.Podman([]string{"create", "--name", ctr1Name, "--pod", podName, "--memory", "10Mi", ALPINE, "top"})
+		ctr1Session.WaitWithDefaultTimeout()
+		Expect(ctr1Session.ExitCode()).To(Equal(0))
+
+		kube := podmanTest.Podman([]string{"generate", "kube", podName})
+		kube.WaitWithDefaultTimeout()
+		Expect(kube.ExitCode()).To(Equal(0))
+
+		pod := new(v1.Pod)
+		err := yaml.Unmarshal(kube.Out.Contents(), pod)
+		Expect(err).To(BeNil())
+
+		for _, ctr := range pod.Spec.Containers {
+			memoryLimit, _ := ctr.Resources.Limits.Memory().AsInt64()
+			Expect(memoryLimit).To(Equal(int64(10 * 1024 * 1024)))
+		}
+	})
+
 	It("podman generate kube on pod with ports", func() {
 		podName := "test"
 		podSession := podmanTest.Podman([]string{"pod", "create", "--name", podName, "-p", "4000:4000", "-p", "5000:5000"})