implement podman update

podman update allows users to change the cgroup configuration of an existing container using the already defined resource limits flags
from podman create/run. The supported flags in crun are:

this command is also now supported in the libpod api via the /libpod/containers/<CID>/update endpoint where
the resource limits are passed inthe request body and follow the OCI resource spec format

–memory
–cpus
–cpuset-cpus
–cpuset-mems
–memory-swap
–memory-reservation
–cpu-shares
–cpu-quota
–cpu-period
–blkio-weight
–cpu-rt-period
–cpu-rt-runtime
-device-read-bps
-device-write-bps
-device-read-iops
-device-write-iops
-memory-swappiness
-blkio-weight-device

resolves #15067

Signed-off-by: Charlie Doern <cdoern@redhat.com>

1 files changed, 28 insertions, 0 deletions

diff --git a/pkg/api/server/register_containers.go b/pkg/api/server/register_containers.go
index 8aba4ea05..41baf5418 100644
--- a/pkg/api/server/register_containers.go
+++ b/pkg/api/server/register_containers.go
@@ -1626,5 +1626,33 @@ func (s *APIServer) registerContainersHandlers(r *mux.Router) error {
 	//   500:
 	//     $ref: "#/responses/internalError"
 	r.HandleFunc(VersionedPath("/libpod/containers/{name}/rename"), s.APIHandler(compat.RenameContainer)).Methods(http.MethodPost)
+	// swagger:operation POST /libpod/containers/{name}/update libpod ContainerUpdateLibpod
+	// ---
+	// tags:
+	//   - containers
+	// summary: Update an existing containers cgroup configuration
+	// description: Update an existing containers cgroup configuration.
+	// parameters:
+	//  - in: path
+	//    name: name
+	//    type: string
+	//    required: true
+	//    description: Full or partial ID or full name of the container to update
+	//  - in: body
+	//    name: resources
+	//    description: attributes for updating the container
+	//    schema:
+	//      $ref: "#/definitions/UpdateEntities"
+	// produces:
+	// - application/json
+	// responses:
+	//   responses:
+	//     201:
+	//       $ref: "#/responses/containerUpdateResponse"
+	//   404:
+	//     $ref: "#/responses/containerNotFound"
+	//   500:
+	//     $ref: "#/responses/internalError"
+	r.HandleFunc(VersionedPath("/libpod/containers/{name}/update"), s.APIHandler(libpod.UpdateContainer)).Methods(http.MethodPost)
 	return nil
 }