Revamp Libpod state strings for Docker compat

Improve our compatibility with Docker by better handling the
state strings that we print in `podman ps`. Docker capitalizes
all states in `ps` (we do not) - fix this in our PS code. Also,
stop normalizing ContainerStateConfigured to the "Created" state,
and instead make it always be Created, with the existing Created
state becoming Initialized.

I didn't rename the actual states because I'm somewhat reticent
to make such a large change a day before we leave for break. It's
somewhat confusing that ContainerStateConfigured now returns
Created, but internally and externally we're still consistent.

[NO NEW TESTS NEEDED] existing tests should catch anything that
broke.

I also consider this a breaking change. I will flag appropriately
on Github.

Fixes RHBZ#2010432 and RHBZ#2032561

Signed-off-by: Matthew Heon <mheon@redhat.com>

cmd/podman/containers/ps.go

@@ -358,13 +358,12 @@ func (l psReporter) State() string {
 	case "running":
 		t := units.HumanDuration(time.Since(time.Unix(l.StartedAt, 0)))
 		state = "Up " + t + " ago"
-	case "configured":
-		state = "Created"
 	case "exited", "stopped":
 		t := units.HumanDuration(time.Since(time.Unix(l.ExitedAt, 0)))
 		state = fmt.Sprintf("Exited (%d) %s ago", l.ExitCode, t)
 	default:
-		state = l.ListContainer.State
+		// Need to capitalize the first letter to match Docker.
+		state = strings.Title(l.ListContainer.State)
 	}
 	return state
 }

libpod/define/containerstate.go

@@ -37,16 +37,23 @@ const (
 	ContainerStateStopping ContainerStatus = iota
 )
 
-// ContainerStatus returns a string representation for users
+// ContainerStatus returns a string representation for users of a container
-// of a container state
+// state. All results should match Docker's versions (from `docker ps`) as
+// closely as possible, given the different set of states we support.
 func (t ContainerStatus) String() string {
 	switch t {
 	case ContainerStateUnknown:
 		return "unknown"
 	case ContainerStateConfigured:
-		return "configured"
+		// The naming here is confusing, but it's necessary for Docker
-	case ContainerStateCreated:
+		// compatibility - their Created state is our Configured state.
 		return "created"
+	case ContainerStateCreated:
+		// Docker does not have an equivalent to this state, so give it
+		// a clear name. Most of the time this is a purely transitory
+		// state between Configured and Running so we don't expect to
+		// see it much anyways.
+		return "initialized"
 	case ContainerStateRunning:
 		return "running"
 	case ContainerStateStopped:

test/apiv2/20-containers.at

@@ -156,7 +156,7 @@ podman create -t -i --name myctr $IMAGE ls
 # Check configuration before initializing
 t GET libpod/containers/myctr/json 200 \
   .Id~[0-9a-f]\\{64\\} \
-  .State.Status="configured" \
+  .State.Status="created" \
   .State.Pid=0 \
   .ResolvConfPath="" \
   .HostnamePath="" \
@@ -172,7 +172,7 @@ t POST libpod/containers/myctr/init 204
 # Check configuration after initializing
 t GET libpod/containers/myctr/json 200 \
   .Id~[0-9a-f]\\{64\\} \
-  .State.Status="created" \
+  .State.Status="initialized" \
   .State.Pid~[0-9]\\{1\,8\\} \
   .ResolvConfPath=$userdata_path/resolv.conf \
   .HostnamePath=$userdata_path/hostname \

test/e2e/init_test.go

@@ -57,7 +57,7 @@ var _ = Describe("Podman init", func() {
 		result.WaitWithDefaultTimeout()
 		Expect(result).Should(Exit(0))
 		conData := result.InspectContainerToJSON()
-		Expect(conData[0].State.Status).To(Equal("created"))
+		Expect(conData[0].State.Status).To(Equal("initialized"))
 	})
 
 	It("podman init single container by name", func() {
@@ -72,7 +72,7 @@ var _ = Describe("Podman init", func() {
 		result.WaitWithDefaultTimeout()
 		Expect(result).Should(Exit(0))
 		conData := result.InspectContainerToJSON()
-		Expect(conData[0].State.Status).To(Equal("created"))
+		Expect(conData[0].State.Status).To(Equal("initialized"))
 	})
 
 	It("podman init latest container", func() {
@@ -87,7 +87,7 @@ var _ = Describe("Podman init", func() {
 		result.WaitWithDefaultTimeout()
 		Expect(result).Should(Exit(0))
 		conData := result.InspectContainerToJSON()
-		Expect(conData[0].State.Status).To(Equal("created"))
+		Expect(conData[0].State.Status).To(Equal("initialized"))
 	})
 
 	It("podman init all three containers, one running", func() {
@@ -107,12 +107,12 @@ var _ = Describe("Podman init", func() {
 		result.WaitWithDefaultTimeout()
 		Expect(result).Should(Exit(0))
 		conData := result.InspectContainerToJSON()
-		Expect(conData[0].State.Status).To(Equal("created"))
+		Expect(conData[0].State.Status).To(Equal("initialized"))
 		result2 := podmanTest.Podman([]string{"inspect", "test2"})
 		result2.WaitWithDefaultTimeout()
 		Expect(result2).Should(Exit(0))
 		conData2 := result2.InspectContainerToJSON()
-		Expect(conData2[0].State.Status).To(Equal("created"))
+		Expect(conData2[0].State.Status).To(Equal("initialized"))
 		result3 := podmanTest.Podman([]string{"inspect", "test3"})
 		result3.WaitWithDefaultTimeout()
 		Expect(result3).Should(Exit(0))

test/e2e/pod_pause_test.go

@@ -16,7 +16,7 @@ var _ = Describe("Podman pod pause", func() {
 		podmanTest *PodmanTestIntegration
 	)
 
-	pausedState := "paused"
+	pausedState := "Paused"
 
 	BeforeEach(func() {
 		SkipIfRootlessCgroupsV1("Pause is not supported in cgroups v1")

test/system/040-ps.bats

@@ -110,7 +110,7 @@ EOF
     run_podman ps --external
     is "${#lines[@]}" "3" "podman ps -a --external sees buildah containers"
     is "${lines[1]}" \
-       "[0-9a-f]\{12\} \+$IMAGE *buildah .* seconds ago .* storage .* ${PODMAN_TEST_IMAGE_NAME}-working-container" \
+       "[0-9a-f]\{12\} \+$IMAGE *buildah .* seconds ago .* Storage .* ${PODMAN_TEST_IMAGE_NAME}-working-container" \
        "podman ps --external"
 
     # 'rm -a' should be a NOP

test/system/080-pause.bats

@@ -27,7 +27,7 @@ load helpers
     is "$output" "paused" "podman inspect .State.Status"
     sleep 3
     run_podman ps -a --format '{{.ID}} {{.Names}} {{.Status}}'
-    is "$output" "${cid:0:12} $cname paused" "podman ps on paused container"
+    is "$output" "${cid:0:12} $cname Paused" "podman ps on paused container"
     run_podman unpause $cname
     run_podman ps -a --format '{{.ID}} {{.Names}} {{.Status}}'
     is "$output" "${cid:0:12} $cname Up .*" "podman ps on resumed container"

test/upgrade/test-upgrade.bats

@@ -223,7 +223,7 @@ EOF
 @test "inspect - all container status" {
     tests="
 running   | running    |  0
-created   | configured |  0
+created   | created    |  0
 done      | exited     |  0
 failed    | exited     | 17
 "