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-rw-r--r--libpod/container.go90
-rw-r--r--libpod/finished_amd64.go16
-rw-r--r--libpod/oci.go92
-rw-r--r--libpod/runtime_ctr.go12
-rw-r--r--libpod/sql_state.go36
-rw-r--r--libpod/sql_state_internal.go11
6 files changed, 197 insertions, 60 deletions
diff --git a/libpod/container.go b/libpod/container.go
index 728a29dec..710ae866b 100644
--- a/libpod/container.go
+++ b/libpod/container.go
@@ -76,6 +76,11 @@ type containerRuntimeInfo struct {
FinishedTime time.Time `json:"finishedTime,omitempty"`
// ExitCode is the exit code returned when the container stopped
ExitCode int32 `json:"exitCode,omitempty"`
+ // OOMKilled indicates that the container was killed as it ran out of
+ // memory
+ OOMKilled bool `json:"oomKilled,omitempty"`
+ // PID is the PID of a running container
+ PID int `json:"pid,omitempty"`
// TODO: Save information about image used in container if one is used
}
@@ -129,10 +134,10 @@ func (c *Container) Name() string {
// The spec returned is the one used to create the container. The running
// spec may differ slightly as mounts are added based on the image
func (c *Container) Spec() *spec.Spec {
- spec := new(spec.Spec)
- deepcopier.Copy(c.config.Spec).To(spec)
+ returnSpec := new(spec.Spec)
+ deepcopier.Copy(c.config.Spec).To(returnSpec)
- return spec
+ return returnSpec
}
// Labels returns the container's labels
@@ -150,13 +155,26 @@ func (c *Container) State() (ContainerState, error) {
c.lock.Lock()
defer c.lock.Unlock()
- if err := c.runtime.state.UpdateContainer(c); err != nil {
- return ContainerStateUnknown, errors.Wrapf(err, "error updating container %s state", c.ID())
+ if err := c.syncContainer(); err != nil {
+ return ContainerStateUnknown, err
}
return c.state.State, nil
}
+// PID returns the PID of the container
+// An error is returned if the container is not running
+func (c *Container) PID() (int, error) {
+ c.lock.Lock()
+ defer c.lock.Unlock()
+
+ if err := c.syncContainer(); err != nil {
+ return -1, err
+ }
+
+ return c.state.PID, nil
+}
+
// The path to the container's root filesystem - where the OCI spec will be
// placed, amongst other things
func (c *Container) bundlePath() string {
@@ -168,6 +186,32 @@ func (c *Container) attachSocketPath() string {
return filepath.Join(c.runtime.ociRuntime.socketsDir, c.ID(), "attach")
}
+// Sync this container with on-disk state and runc status
+// Should only be called with container lock held
+func (c *Container) syncContainer() error {
+ if err := c.runtime.state.UpdateContainer(c); err != nil {
+ return err
+ }
+
+ // If runc knows about the container, update its status in runc
+ // And then save back to disk
+ if (c.state.State != ContainerStateUnknown) &&
+ (c.state.State != ContainerStateConfigured) {
+ if err := c.runtime.ociRuntime.updateContainerStatus(c); err != nil {
+ return err
+ }
+ if err := c.runtime.state.SaveContainer(c); err != nil {
+ return err
+ }
+ }
+
+ if !c.valid {
+ return errors.Wrapf(ErrCtrRemoved, "container %s is not valid", c.ID())
+ }
+
+ return nil
+}
+
// Make a new container
func newContainer(rspec *spec.Spec) (*Container, error) {
if rspec == nil {
@@ -191,9 +235,6 @@ func newContainer(rspec *spec.Spec) (*Container, error) {
// Create container root filesystem for use
func (c *Container) setupStorage() error {
- c.lock.Lock()
- defer c.lock.Unlock()
-
if !c.valid {
return errors.Wrapf(ErrCtrRemoved, "container %s is not valid", c.ID())
}
@@ -220,9 +261,6 @@ func (c *Container) setupStorage() error {
// Tear down a container's storage prior to removal
func (c *Container) teardownStorage() error {
- c.lock.Lock()
- defer c.lock.Unlock()
-
if !c.valid {
return errors.Wrapf(ErrCtrRemoved, "container %s is not valid", c.ID())
}
@@ -251,12 +289,8 @@ func (c *Container) Init() (err error) {
c.lock.Lock()
defer c.lock.Unlock()
- if err := c.runtime.state.UpdateContainer(c); err != nil {
- return errors.Wrapf(err, "error updating container %s state", c.ID())
- }
-
- if !c.valid {
- return errors.Wrapf(ErrCtrRemoved, "container %s is not valid", c.ID())
+ if err := c.syncContainer(); err != nil {
+ return err
}
if c.state.State != ContainerStateConfigured {
@@ -325,12 +359,8 @@ func (c *Container) Start() error {
c.lock.Lock()
defer c.lock.Unlock()
- if err := c.runtime.state.UpdateContainer(c); err != nil {
- return errors.Wrapf(err, "error updating container %s state", c.ID())
- }
-
- if !c.valid {
- return ErrCtrRemoved
+ if err := c.syncContainer(); err != nil {
+ return err
}
// Container must be created or stopped to be started
@@ -344,8 +374,10 @@ func (c *Container) Start() error {
logrus.Debugf("Started container %s", c.ID())
- c.state.StartedTime = time.Now()
- c.state.State = ContainerStateRunning
+ // Update container's state as it should be ContainerStateRunning now
+ if err := c.runtime.ociRuntime.updateContainerStatus(c); err != nil {
+ return err
+ }
if err := c.runtime.state.SaveContainer(c); err != nil {
return errors.Wrapf(err, "error saving container %s state", c.ID())
@@ -373,12 +405,8 @@ func (c *Container) Exec(cmd []string, tty bool, stdin bool) (string, error) {
// Attach attaches to a container
// Returns fully qualified URL of streaming server for the container
func (c *Container) Attach(noStdin bool, keys string, attached chan<- bool) error {
- if err := c.runtime.state.UpdateContainer(c); err != nil {
- return errors.Wrapf(err, "error updating container %s state", c.ID())
- }
-
- if !c.valid {
- return errors.Wrapf(ErrCtrRemoved, "container %s is not valid", c.ID())
+ if err := c.syncContainer(); err != nil {
+ return err
}
if c.state.State == ContainerStateRunning || c.state.State == ContainerStatePaused {
diff --git a/libpod/finished_amd64.go b/libpod/finished_amd64.go
new file mode 100644
index 000000000..11dbc9181
--- /dev/null
+++ b/libpod/finished_amd64.go
@@ -0,0 +1,16 @@
+// +build !arm,!386
+
+package libpod
+
+import (
+ "os"
+ "syscall"
+ "time"
+)
+
+// Get the created time of a file
+// Only works on 64-bit OSes
+func getFinishedTime(fi os.FileInfo) time.Time {
+ st := fi.Sys().(*syscall.Stat_t)
+ return time.Unix(st.Ctim.Sec, st.Ctim.Nsec)
+}
diff --git a/libpod/oci.go b/libpod/oci.go
index 9fa2d3788..3ad3fdd8e 100644
--- a/libpod/oci.go
+++ b/libpod/oci.go
@@ -4,9 +4,11 @@ import (
"bytes"
"encoding/json"
"fmt"
+ "io/ioutil"
"os"
"os/exec"
"path/filepath"
+ "strconv"
"syscall"
"time"
@@ -15,6 +17,7 @@ import (
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
"golang.org/x/sys/unix"
+ kwait "k8s.io/apimachinery/pkg/util/wait"
// TODO import these functions into libpod and remove the import
// Trying to keep libpod from depending on CRI-O code
@@ -255,19 +258,90 @@ func (r *OCIRuntime) createContainer(ctr *Container, cgroupParent string) error
}
// updateContainerStatus retrieves the current status of the container from the
-// runtime
-// remove nolint when implemented
-func (r *OCIRuntime) updateContainerStatus(ctr *Container) error { //nolint
- return ErrNotImplemented
+// runtime. It updates the container's state but does not save it.
+func (r *OCIRuntime) updateContainerStatus(ctr *Container) error {
+ state := new(spec.State)
+
+ out, err := exec.Command(r.path, "state", ctr.ID()).CombinedOutput()
+ if err != nil {
+ return errors.Wrapf(err, "error getting container %s state. stderr/out: %s", ctr.ID(), out)
+ }
+
+ if err := json.NewDecoder(bytes.NewBuffer(out)).Decode(state); err != nil {
+ return errors.Wrapf(err, "error decoding container status for container %s", ctr.ID())
+ }
+
+ ctr.state.PID = state.Pid
+
+ switch state.Status {
+ case "created":
+ ctr.state.State = ContainerStateCreated
+ case "paused":
+ ctr.state.State = ContainerStatePaused
+ case "running":
+ ctr.state.State = ContainerStateRunning
+ case "stopped":
+ ctr.state.State = ContainerStateStopped
+ default:
+ return errors.Wrapf(ErrInternal, "unrecognized status returned by runc for container %s: %s",
+ ctr.ID(), state.Status)
+ }
+
+ if ctr.state.State == ContainerStateStopped {
+ exitFile := filepath.Join(r.exitsDir, ctr.ID())
+ var fi os.FileInfo
+ err = kwait.ExponentialBackoff(
+ kwait.Backoff{
+ Duration: 500 * time.Millisecond,
+ Factor: 1.2,
+ Steps: 6,
+ },
+ func() (bool, error) {
+ var err error
+ fi, err = os.Stat(exitFile)
+ if err != nil {
+ // wait longer
+ return false, nil
+ }
+ return true, nil
+ })
+ if err != nil {
+ ctr.state.ExitCode = -1
+ ctr.state.FinishedTime = time.Now()
+ return errors.Wrapf(err, "no exit file for container %s found", ctr.ID())
+ }
+
+ ctr.state.FinishedTime = getFinishedTime(fi)
+ statusCodeStr, err := ioutil.ReadFile(exitFile)
+ if err != nil {
+ return errors.Wrapf(err, "failed to read exit file for container %s", ctr.ID())
+ }
+ statusCode, err := strconv.Atoi(string(statusCodeStr))
+ if err != nil {
+ return errors.Wrapf(err, "error convertaing exit status code for container %s to int",
+ ctr.ID())
+ }
+ ctr.state.ExitCode = int32(statusCode)
+
+ oomFilePath := filepath.Join(ctr.bundlePath(), "oom")
+ if _, err = os.Stat(oomFilePath); err == nil {
+ ctr.state.OOMKilled = true
+ }
+
+ }
+
+ return nil
}
// startContainer starts the given container
-// remove nolint when function is complete
-func (r *OCIRuntime) startContainer(ctr *Container) error { //nolint
+// Sets time the container was started, but does not save it.
+func (r *OCIRuntime) startContainer(ctr *Container) error {
// TODO: streams should probably *not* be our STDIN/OUT/ERR - redirect to buffers?
- err := utils.ExecCmdWithStdStreams(os.Stdin, os.Stdout, os.Stderr, r.path, "start", ctr.ID())
+ if err := utils.ExecCmdWithStdStreams(os.Stdin, os.Stdout, os.Stderr, r.path, "start", ctr.ID()); err != nil {
+ return err
+ }
- // TODO record start time in container struct
+ ctr.state.StartedTime = time.Now()
- return err
+ return nil
}
diff --git a/libpod/runtime_ctr.go b/libpod/runtime_ctr.go
index aa8ff7d88..fd92a3411 100644
--- a/libpod/runtime_ctr.go
+++ b/libpod/runtime_ctr.go
@@ -91,12 +91,8 @@ func (r *Runtime) RemoveContainer(c *Container, force bool) error {
return ErrRuntimeStopped
}
- if !c.valid {
- return ErrCtrRemoved
- }
-
// Update the container to get current state
- if err := r.state.UpdateContainer(c); err != nil {
+ if err := c.syncContainer(); err != nil {
return err
}
@@ -225,9 +221,3 @@ func (r *Runtime) removeMultipleContainers(containers []storage.Container) error
}
return nil
}
-
-// ContainerConfigToDisk saves a container's nonvolatile configuration to disk
-// remove nolint when implemented
-func (r *Runtime) containerConfigToDisk(ctr *Container) error { //nolint
- return ErrNotImplemented
-}
diff --git a/libpod/sql_state.go b/libpod/sql_state.go
index 466ad66a5..893223914 100644
--- a/libpod/sql_state.go
+++ b/libpod/sql_state.go
@@ -103,7 +103,9 @@ func (s *SQLState) Container(id string) (*Container, error) {
containerState.MountPoint,
containerState.StartedTime,
containerState.FinishedTime,
- containerState.ExitCode
+ containerState.ExitCode,
+ containerState.OomKilled,
+ containerState.Pid
FROM containers
INNER JOIN
containerState ON containers.Id = containerState.Id
@@ -136,7 +138,9 @@ func (s *SQLState) LookupContainer(idOrName string) (*Container, error) {
containerState.MountPoint,
containerState.StartedTime,
containerState.FinishedTime,
- containerState.ExitCode
+ containerState.ExitCode,
+ containerState.OomKilled,
+ containerState.Pid
FROM containers
INNER JOIN
containerState ON containers.Id = containerState.Id
@@ -220,7 +224,7 @@ func (s *SQLState) AddContainer(ctr *Container) (err error) {
?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?
);`
addCtrState = `INSERT INTO containerState VALUES (
- ?, ?, ?, ?, ?, ?, ?, ?
+ ?, ?, ?, ?, ?, ?, ?, ?, ?, ?
);`
)
@@ -278,7 +282,9 @@ func (s *SQLState) AddContainer(ctr *Container) (err error) {
ctr.state.Mountpoint,
timeToSQL(ctr.state.StartedTime),
timeToSQL(ctr.state.FinishedTime),
- ctr.state.ExitCode)
+ ctr.state.ExitCode,
+ boolToSQL(ctr.state.OOMKilled),
+ ctr.state.PID)
if err != nil {
return errors.Wrapf(err, "error adding container %s state to database", ctr.ID())
}
@@ -315,7 +321,9 @@ func (s *SQLState) UpdateContainer(ctr *Container) error {
Mountpoint,
StartedTime,
FinishedTime,
- ExitCode
+ ExitCode,
+ OomKilled,
+ Pid
FROM containerState WHERE ID=?;`
var (
@@ -326,6 +334,8 @@ func (s *SQLState) UpdateContainer(ctr *Container) error {
startedTimeString string
finishedTimeString string
exitCode int32
+ oomKilled int
+ pid int
)
if !s.valid {
@@ -344,7 +354,9 @@ func (s *SQLState) UpdateContainer(ctr *Container) error {
&mountpoint,
&startedTimeString,
&finishedTimeString,
- &exitCode)
+ &exitCode,
+ &oomKilled,
+ &pid)
if err != nil {
// The container may not exist in the database
if err == sql.ErrNoRows {
@@ -364,6 +376,8 @@ func (s *SQLState) UpdateContainer(ctr *Container) error {
newState.RunDir = runDir
newState.Mountpoint = mountpoint
newState.ExitCode = exitCode
+ newState.OOMKilled = boolFromSQL(oomKilled)
+ newState.PID = pid
if newState.Mountpoint != "" {
newState.Mounted = true
@@ -396,7 +410,9 @@ func (s *SQLState) SaveContainer(ctr *Container) error {
Mountpoint=?,
StartedTime=?,
FinishedTime=?,
- ExitCode=?
+ ExitCode=?,
+ OomKilled=?,
+ Pid=?
WHERE Id=?;`
s.lock.Lock()
@@ -431,6 +447,8 @@ func (s *SQLState) SaveContainer(ctr *Container) error {
timeToSQL(ctr.state.StartedTime),
timeToSQL(ctr.state.FinishedTime),
ctr.state.ExitCode,
+ boolToSQL(ctr.state.OOMKilled),
+ ctr.state.PID,
ctr.ID())
if err != nil {
return errors.Wrapf(err, "error updating container %s state in database", ctr.ID())
@@ -521,7 +539,9 @@ func (s *SQLState) AllContainers() ([]*Container, error) {
containerState.MountPoint,
containerState.StartedTime,
containerState.FinishedTime,
- containerState.ExitCode
+ containerState.ExitCode,
+ containerState.OomKilled,
+ containerState.Pid
FROM containers
INNER JOIN
containerState ON containers.Id = containerState.Id;`
diff --git a/libpod/sql_state_internal.go b/libpod/sql_state_internal.go
index 698b0433c..b6816e008 100644
--- a/libpod/sql_state_internal.go
+++ b/libpod/sql_state_internal.go
@@ -61,7 +61,10 @@ func prepareDB(db *sql.DB) (err error) {
StartedTime TEXT NUT NULL,
FinishedTime TEXT NOT NULL,
ExitCode INTEGER NOT NULL,
+ OomKilled INTEGER NOT NULL,
+ Pid INTEGER NOT NULL,
CHECK (State>0),
+ CHECK (OomKilled IN (0, 1)),
FOREIGN KEY (Id) REFERENCES containers(Id) DEFERRABLE INITIALLY DEFERRED
);
`
@@ -149,6 +152,8 @@ func ctrFromScannable(row scannable, runtime *Runtime, specsDir string) (*Contai
startedTimeString string
finishedTimeString string
exitCode int32
+ oomKilled int
+ pid int
)
err := row.Scan(
@@ -169,7 +174,9 @@ func ctrFromScannable(row scannable, runtime *Runtime, specsDir string) (*Contai
&mountpoint,
&startedTimeString,
&finishedTimeString,
- &exitCode)
+ &exitCode,
+ &oomKilled,
+ &pid)
if err != nil {
if err == sql.ErrNoRows {
return nil, ErrNoSuchCtr
@@ -197,6 +204,8 @@ func ctrFromScannable(row scannable, runtime *Runtime, specsDir string) (*Contai
ctr.state.RunDir = runDir
ctr.state.Mountpoint = mountpoint
ctr.state.ExitCode = exitCode
+ ctr.state.OOMKilled = boolFromSQL(oomKilled)
+ ctr.state.PID = pid
// TODO should we store this in the database separately instead?
if ctr.state.Mountpoint != "" {
generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2024-09-27 11:24:11 +0000