Add Checkpointed bool to Inspect

When inspecting a container, we now report whether the container
was stopped by a `podman checkpoint` operation via a new bool in
the State portion of inspected, `Checkpointed`.

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

libpod/container.go

@@ -159,6 +159,9 @@ type ContainerState struct {
 	// OOMKilled indicates that the container was killed as it ran out of
 	// memory
 	OOMKilled bool `json:"oomKilled,omitempty"`
+	// Checkpointed indicates that the container was stopped by a checkpoint
+	// operation.
+	Checkpointed bool `json:"checkpointed,omitempty"`
 	// PID is the PID of a running container
 	PID int `json:"pid,omitempty"`
 	// ConmonPID is the PID of the container's conmon

libpod/container_inspect.go

@@ -103,18 +103,19 @@ func (c *Container) getContainerInspectData(size bool, driverData *define.Driver
 		Path:    path,
 		Args:    args,
 		State: &define.InspectContainerState{
-			OciVersion: ctrSpec.Version,
-			Status:     runtimeInfo.State.String(),
-			Running:    runtimeInfo.State == define.ContainerStateRunning,
-			Paused:     runtimeInfo.State == define.ContainerStatePaused,
-			OOMKilled:  runtimeInfo.OOMKilled,
-			Dead:       runtimeInfo.State.String() == "bad state",
-			Pid:        runtimeInfo.PID,
-			ConmonPid:  runtimeInfo.ConmonPID,
-			ExitCode:   runtimeInfo.ExitCode,
-			Error:      "", // can't get yet
-			StartedAt:  runtimeInfo.StartedTime,
-			FinishedAt: runtimeInfo.FinishedTime,
+			OciVersion:   ctrSpec.Version,
+			Status:       runtimeInfo.State.String(),
+			Running:      runtimeInfo.State == define.ContainerStateRunning,
+			Paused:       runtimeInfo.State == define.ContainerStatePaused,
+			OOMKilled:    runtimeInfo.OOMKilled,
+			Dead:         runtimeInfo.State.String() == "bad state",
+			Pid:          runtimeInfo.PID,
+			ConmonPid:    runtimeInfo.ConmonPID,
+			ExitCode:     runtimeInfo.ExitCode,
+			Error:        "", // can't get yet
+			StartedAt:    runtimeInfo.StartedTime,
+			FinishedAt:   runtimeInfo.FinishedTime,
+			Checkpointed: runtimeInfo.Checkpointed,
 		},
 		Image:           config.RootfsImageID,
 		ImageName:       config.RootfsImageName,

libpod/container_internal.go

@@ -584,6 +584,7 @@ func resetState(state *ContainerState) {
 	state.StoppedByUser = false
 	state.RestartPolicyMatch = false
 	state.RestartCount = 0
+	state.Checkpointed = false
 }
 
 // Refresh refreshes the container's state after a restart.
@@ -1110,6 +1111,7 @@ func (c *Container) init(ctx context.Context, retainRetries bool) error {
 		c.state.ExecSessions = make(map[string]*ExecSession)
 	}
 
+	c.state.Checkpointed = false
 	c.state.ExitCode = 0
 	c.state.Exited = false
 	c.state.State = define.ContainerStateCreated

libpod/container_internal_linux.go

@@ -1146,6 +1146,7 @@ func (c *Container) checkpoint(ctx context.Context, options ContainerCheckpointO
 
 	if !options.KeepRunning && !options.PreCheckPoint {
 		c.state.State = define.ContainerStateStopped
+		c.state.Checkpointed = true
 
 		// Cleanup Storage and Network
 		if err := c.cleanup(ctx); err != nil {

libpod/define/container_inspect.go

@@ -189,20 +189,21 @@ type InspectMount struct {
 // Docker, but here we see more fields that are unused (nonsensical in the
 // context of Libpod).
 type InspectContainerState struct {
-	OciVersion  string             `json:"OciVersion"`
-	Status      string             `json:"Status"`
-	Running     bool               `json:"Running"`
-	Paused      bool               `json:"Paused"`
-	Restarting  bool               `json:"Restarting"` // TODO
-	OOMKilled   bool               `json:"OOMKilled"`
-	Dead        bool               `json:"Dead"`
-	Pid         int                `json:"Pid"`
-	ConmonPid   int                `json:"ConmonPid,omitempty"`
-	ExitCode    int32              `json:"ExitCode"`
-	Error       string             `json:"Error"` // TODO
-	StartedAt   time.Time          `json:"StartedAt"`
-	FinishedAt  time.Time          `json:"FinishedAt"`
-	Healthcheck HealthCheckResults `json:"Healthcheck,omitempty"`
+	OciVersion   string             `json:"OciVersion"`
+	Status       string             `json:"Status"`
+	Running      bool               `json:"Running"`
+	Paused       bool               `json:"Paused"`
+	Restarting   bool               `json:"Restarting"` // TODO
+	OOMKilled    bool               `json:"OOMKilled"`
+	Dead         bool               `json:"Dead"`
+	Pid          int                `json:"Pid"`
+	ConmonPid    int                `json:"ConmonPid,omitempty"`
+	ExitCode     int32              `json:"ExitCode"`
+	Error        string             `json:"Error"` // TODO
+	StartedAt    time.Time          `json:"StartedAt"`
+	FinishedAt   time.Time          `json:"FinishedAt"`
+	Healthcheck  HealthCheckResults `json:"Healthcheck,omitempty"`
+	Checkpointed bool               `json:"Checkpointed,omitempty"`
 }
 
 // HealthCheckResults describes the results/logs from a healthcheck

test/e2e/checkpoint_test.go

@@ -93,6 +93,12 @@ var _ = Describe("Podman checkpoint", func() {
 		Expect(podmanTest.NumberOfContainersRunning()).To(Equal(0))
 		Expect(podmanTest.GetContainerStatus()).To(ContainSubstring("Exited"))
 
+		inspect := podmanTest.Podman([]string{"inspect", cid})
+		inspect.WaitWithDefaultTimeout()
+		Expect(inspect).Should(Exit(0))
+		inspectOut := inspect.InspectContainerToJSON()
+		Expect(inspectOut[0].State.Checkpointed).To(BeTrue())
+
 		result = podmanTest.Podman([]string{"container", "restore", cid})
 		result.WaitWithDefaultTimeout()