From 98169c20ddc09d8fa14d556e93cad3259b5ccca9 Mon Sep 17 00:00:00 2001
From: Urvashi Mohnani <umohnani@redhat.com>
Date: Sun, 24 Jul 2022 19:44:41 -0400
Subject: Add emptyDir volume support to kube play

When a kube yaml has a volume set as empty dir, podman
will create an anonymous volume with the empty dir name and
attach it to the containers running in the pod. When the pod
is removed, the empy dir volume created is also removed.

Add tests and docs for this as well.

Signed-off-by: Urvashi Mohnani <umohnani@redhat.com>
---
 test/e2e/play_kube_test.go | 51 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 51 insertions(+)

(limited to 'test/e2e/play_kube_test.go')

diff --git a/test/e2e/play_kube_test.go b/test/e2e/play_kube_test.go
index 7d3a2224c..d1eb960cd 100644
--- a/test/e2e/play_kube_test.go
+++ b/test/e2e/play_kube_test.go
@@ -509,6 +509,9 @@ spec:
   volumes:
   {{ range . }}
   - name: {{ .Name }}
+    {{- if (eq .VolumeType "EmptyDir") }}
+    emptyDir: {}
+    {{- end }}
     {{- if (eq .VolumeType "HostPath") }}
     hostPath:
       path: {{ .HostPath.Path }}
@@ -1242,12 +1245,15 @@ type ConfigMap struct {
 	Optional bool
 }
 
+type EmptyDir struct{}
+
 type Volume struct {
 	VolumeType string
 	Name       string
 	HostPath
 	PersistentVolumeClaim
 	ConfigMap
+	EmptyDir
 }
 
 // getHostPathVolume takes a type and a location for a HostPath
@@ -1289,6 +1295,14 @@ func getConfigMapVolume(vName string, items []map[string]string, optional bool)
 	}
 }
 
+func getEmptyDirVolume() *Volume {
+	return &Volume{
+		VolumeType: "EmptyDir",
+		Name:       defaultVolName,
+		EmptyDir:   EmptyDir{},
+	}
+}
+
 type Env struct {
 	Name      string
 	Value     string
@@ -2762,6 +2776,43 @@ VOLUME %s`, ALPINE, hostPathDir+"/")
 		Expect(kube).Should(Exit(0))
 	})
 
+	It("podman play kube with emptyDir volume", func() {
+		podName := "test-pod"
+		ctrName1 := "vol-test-ctr"
+		ctrName2 := "vol-test-ctr-2"
+		ctr1 := getCtr(withVolumeMount("/test-emptydir", false), withImage(BB), withName(ctrName1))
+		ctr2 := getCtr(withVolumeMount("/test-emptydir-2", false), withImage(BB), withName(ctrName2))
+		pod := getPod(withPodName(podName), withVolume(getEmptyDirVolume()), withCtr(ctr1), withCtr(ctr2))
+		err = generateKubeYaml("pod", pod, kubeYaml)
+		Expect(err).To(BeNil())
+
+		kube := podmanTest.Podman([]string{"play", "kube", kubeYaml})
+		kube.WaitWithDefaultTimeout()
+		Expect(kube).Should(Exit(0))
+
+		emptyDirCheck1 := podmanTest.Podman([]string{"exec", podName + "-" + ctrName1, "ls", "/test-emptydir"})
+		emptyDirCheck1.WaitWithDefaultTimeout()
+		Expect(emptyDirCheck1).Should(Exit(0))
+
+		emptyDirCheck2 := podmanTest.Podman([]string{"exec", podName + "-" + ctrName2, "ls", "/test-emptydir-2"})
+		emptyDirCheck2.WaitWithDefaultTimeout()
+		Expect(emptyDirCheck2).Should(Exit(0))
+
+		volList1 := podmanTest.Podman([]string{"volume", "ls", "-q"})
+		volList1.WaitWithDefaultTimeout()
+		Expect(volList1).Should(Exit(0))
+		Expect(volList1.OutputToString()).To(Equal(defaultVolName))
+
+		remove := podmanTest.Podman([]string{"pod", "rm", "-f", podName})
+		remove.WaitWithDefaultTimeout()
+		Expect(remove).Should(Exit(0))
+
+		volList2 := podmanTest.Podman([]string{"volume", "ls", "-q"})
+		volList2.WaitWithDefaultTimeout()
+		Expect(volList2).Should(Exit(0))
+		Expect(volList2.OutputToString()).To(Equal(""))
+	})
+
 	It("podman play kube applies labels to pods", func() {
 		var numReplicas int32 = 5
 		expectedLabelKey := "key1"
-- 
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