vbatts/cri-o
1
0
Fork 0
Code Issues Pull requests Releases Wiki Activity

Add methods for listing and fetching container stats

Browse source 
This uses the previously unusued lib/stats.go code to return data
about container stats to the CRI API. Helpers have been built around
filtering based on the OCI API, and CPU stat reporting has been fixed.

No data on filesystem layer usage is returned at this time.

Fixes one-half of #1248

Signed-off-by: Yann Ramin <atrus@stackworks.net>
This commit is contained in:
Yann Ramin 2018-01-07 14:16:46 -08:00
parent ef57cf2810
commit 14c1c70407
4 changed files with 118 additions and 41 deletions
Download patch file Download diff file Expand all files Collapse all files

73
server/container_list.go
View file

@ -28,6 +28,44 @@ func filterContainer(c *pb.Container, filter *pb.ContainerFilter) bool {
return true
}
// filterContainerList applies a protobuf-defined filter to retrieve only intended containers. Not matching
// the filter is not considered an error but will return an empty response.
func (s *Server) filterContainerList(filter *pb.ContainerFilter) (ctrList []*oci.Container, err error) {
// Filter using container id and pod id first.
if filter.Id != "" {
id, err := s.CtrIDIndex().Get(filter.Id)
if err != nil {
// If we don't find a container ID with a filter, it should not
// be considered an error. Log a warning and return an empty struct
logrus.Warn("unable to find container ID %s", filter.Id)
return []*oci.Container{}, nil
}
c := s.ContainerServer.GetContainer(id)
if c != nil {
if filter.PodSandboxId != "" {
if c.Sandbox() == filter.PodSandboxId {
ctrList = []*oci.Container{c}
} else {
ctrList = []*oci.Container{}
}
} else {
ctrList = []*oci.Container{c}
}
}
} else {
if filter.PodSandboxId != "" {
pod := s.ContainerServer.GetSandbox(filter.PodSandboxId)
if pod == nil {
ctrList = []*oci.Container{}
} else {
ctrList = pod.Containers().List()
}
}
}
return
}
// ListContainers lists all containers by filters.
func (s *Server) ListContainers(ctx context.Context, req *pb.ListContainersRequest) (resp *pb.ListContainersResponse, err error) {
const operation = "list_containers"
@ -45,38 +83,9 @@ func (s *Server) ListContainers(ctx context.Context, req *pb.ListContainersReque
}
if filter != nil {
// Filter using container id and pod id first.
if filter.Id != "" {
id, err := s.CtrIDIndex().Get(filter.Id)
if err != nil {
// If we don't find a container ID with a filter, it should not
// be considered an error. Log a warning and return an empty struct
logrus.Warn("unable to find container ID %s", filter.Id)
return &pb.ListContainersResponse{}, nil
}
c := s.ContainerServer.GetContainer(id)
if c != nil {
if filter.PodSandboxId != "" {
if c.Sandbox() == filter.PodSandboxId {
ctrList = []*oci.Container{c}
} else {
ctrList = []*oci.Container{}
}
} else {
ctrList = []*oci.Container{c}
}
}
} else {
if filter.PodSandboxId != "" {
pod := s.ContainerServer.GetSandbox(filter.PodSandboxId)
if pod == nil {
ctrList = []*oci.Container{}
} else {
ctrList = pod.Containers().List()
}
}
ctrList, err = s.filterContainerList(filter)
if err != nil {
return nil, err
}
}