prometheus/cadvisor
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Undo changes to if statements as requested by vmarmol. Fix typos in my changes.

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This commit is contained in:
Satnam Singh 2014-09-24 10:03:56 -07:00
parent f097c2b4ab
commit cab052cc8a
6 changed files with 35 additions and 23 deletions
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7
container/container.go
View File

@ -12,14 +12,14 @@
// See the License for the specific language governing permissions and
// limitations under the License.
// Pacakge container defines types for sub-container events and also
// Package container defines types for sub-container events and also
// defines an interface for container operation handlers.
package container
import "github.com/google/cadvisor/info"
// ListType describes whether listing should be just for a
// specific container or performed recurisvely.
// specific container or performed recursively.
type ListType int
const (
@ -27,8 +27,7 @@ const (
ListRecursive
)
// SubcontainerEventType indicated whether the event
// specifies an addition or deletion.
// SubcontainerEventType indicates an addition or deletion event.
type SubcontainerEventType int
const (

14
container/raw/handler.go
View File

@ -12,7 +12,7 @@
// See the License for the specific language governing permissions and
// limitations under the License.
// TODO(cAdvosor): Package comment.
// TODO(cAdvisor): Package comment.
package raw
import (
@ -165,7 +165,8 @@ func listDirectories(dirpath string, parent string, recursive bool, output map[s
// List subcontainers if asked to.
if recursive {
if err := listDirectories(path.Join(dirpath, entry.Name()), name, true, output); err != nil {
err := listDirectories(path.Join(dirpath, entry.Name()), name, true, output)
if err != nil {
return err
}
}
@ -204,7 +205,8 @@ func (self *rawContainerHandler) ListProcesses(listType container.ListType) ([]i
}
func (self *rawContainerHandler) watchDirectory(dir string, containerName string) error {
if err := self.watcher.AddWatch(dir, inotify.IN_CREATE|inotify.IN_DELETE|inotify.IN_MOVE); err != nil {
err := self.watcher.AddWatch(dir, inotify.IN_CREATE|inotify.IN_DELETE|inotify.IN_MOVE)
if err != nil {
return err
}
self.watches[containerName] = struct{}{}
@ -264,7 +266,8 @@ func (self *rawContainerHandler) processEvent(event *inotify.Event, events chan
}
// New container was created, watch it.
if err := self.watchDirectory(event.Name, containerName); err != nil {
err := self.watchDirectory(event.Name, containerName)
if err != nil {
return err
}
case eventType == container.SubcontainerDelete:
@ -303,7 +306,8 @@ func (self *rawContainerHandler) WatchSubcontainers(events chan container.Subcon
// Watch this container (all its cgroups) and all subdirectories.
for _, mnt := range self.cgroupSubsystems.mounts {
if err := self.watchDirectory(path.Join(mnt.Mountpoint, self.name), self.name); err != nil {
err := self.watchDirectory(path.Join(mnt.Mountpoint, self.name), self.name)
if err != nil {
return err
}
}

4
manager/container.go
View File

@ -12,7 +12,6 @@
// See the License for the specific language governing permissions and
// limitations under the License.
// Package mananger provides per-container manager support.
package manager
import (
@ -197,7 +196,8 @@ func (c *containerData) updateStats() error {
if err != nil {
return err
}
if err = c.storageDriver.AddStats(ref, stats); err != nil {
err = c.storageDriver.AddStats(ref, stats)
if err != nil {
return err
}
return nil

6
manager/container_test.go
View File

@ -83,7 +83,8 @@ func TestUpdateSubcontainersWithError(t *testing.T) {
fmt.Errorf("some error"),
)
if err := cd.updateSubcontainers(); err == nil {
err := cd.updateSubcontainers()
if err == nil {
t.Fatal("updateSubcontainers should return error")
}
if len(cd.info.Subcontainers) != 0 {
@ -105,7 +106,8 @@ func TestUpdateStats(t *testing.T) {
mockDriver.On("AddStats", info.ContainerReference{Name: mockHandler.Name}, stats).Return(nil)
if err := cd.updateStats(); err != nil {
err := cd.updateStats()
if err != nil {
t.Fatal(err)
}

24
manager/manager.go
View File

@ -87,11 +87,13 @@ type manager struct {
// Start the container manager.
func (self *manager) Start() error {
// Create root and then recover all containers.
if err := self.createContainer("/"); err != nil {
err := self.createContainer("/")
if err != nil {
return err
}
glog.Infof("Starting recovery of all containers")
if err := self.detectSubcontainers("/"); err != nil {
err = self.detectSubcontainers("/")
if err != nil {
return err
}
glog.Infof("Recovery completed")
@ -111,7 +113,8 @@ func (self *manager) Start() error {
start := time.Now()
// Check for new containers.
if err := self.detectSubcontainers("/"); err != nil {
err := self.detectSubcontainers("/")
if err != nil {
glog.Errorf("Failed to detect containers: %s", err)
}
@ -235,8 +238,9 @@ func (m *manager) createContainer(containerName string) error {
m.containersLock.Lock()
defer m.containersLock.Unlock()
// Check that the container didn't already exist
if _, ok := m.containers[containerName]; ok {
// Check that the container didn't already exist\
_, ok := m.containers[containerName]
if ok {
return true
}
@ -311,7 +315,8 @@ func (m *manager) getContainersDiff(containerName string) (added []info.Containe
// Added containers
for _, c := range allContainers {
delete(allContainersSet, c.Name)
if _, ok := m.containers[c.Name]; !ok {
_, ok := m.containers[c.Name]
if !ok {
added = append(added, c)
}
}
@ -341,7 +346,8 @@ func (m *manager) detectSubcontainers(containerName string) error {
// Remove the old containers.
for _, cont := range removed {
if err = m.destroyContainer(cont.Name); err != nil {
err = m.destroyContainer(cont.Name)
if err != nil {
glog.Errorf("failed to destroy existing container: %s: %s", cont.Name, err)
}
}
@ -369,7 +375,8 @@ func (self *manager) watchForNewContainers() error {
// Register for new subcontainers.
events := make(chan container.SubcontainerEvent, 16)
if err := root.handler.WatchSubcontainers(events); err != nil {
err := root.handler.WatchSubcontainers(events)
if err != nil {
return err
}
@ -379,7 +386,6 @@ func (self *manager) watchForNewContainers() error {
}
// Listen to events from the container handler.
var err error
for event := range events {
switch {
case event.EventType == container.SubcontainerAdd:

3
manager/manager_test.go
View File

@ -176,7 +176,8 @@ func TestNew(t *testing.T) {
}
func TestNewNilManager(t *testing.T) {
if _, err := New(nil); err == nil {
_, err := New(nil)
if err == nil {
t.Fatalf("Expected nil manager to return error")
}
}