513cebe7b7
* Add Virtual Kubelet provider for VIC Initial virtual kubelet provider for VMware VIC. This provider currently handles creating and starting of a pod VM via the VIC portlayer and persona server. Image store handling via the VIC persona server. This provider currently requires the feature/wolfpack branch of VIC. * Added pod stop and delete. Also added node capacity. Added the ability to stop and delete pod VMs via VIC. Also retrieve node capacity information from the VCH. * Cleanup and readme file Some file clean up and added a Readme.md markdown file for the VIC provider. * Cleaned up errors, added function comments, moved operation code 1. Cleaned up error handling. Set standard for creating errors. 2. Added method prototype comments for all interface functions. 3. Moved PodCreator, PodStarter, PodStopper, and PodDeleter to a new folder. * Add mocking code and unit tests for podcache, podcreator, and podstarter Used the unit test framework used in VIC to handle assertions in the provider's unit test. Mocking code generated using OSS project mockery, which is compatible with the testify assertion framework. * Vendored packages for the VIC provider Requires feature/wolfpack branch of VIC and a few specific commit sha of projects used within VIC. * Implementation of POD Stopper and Deleter unit tests (#4) * Updated files for initial PR
112 lines
3.3 KiB
Go
112 lines
3.3 KiB
Go
package netlink
|
|
|
|
import (
|
|
"fmt"
|
|
"syscall"
|
|
"time"
|
|
|
|
"github.com/vishvananda/netlink/nl"
|
|
"github.com/vishvananda/netns"
|
|
)
|
|
|
|
// Empty handle used by the netlink package methods
|
|
var pkgHandle = &Handle{}
|
|
|
|
// Handle is an handle for the netlink requests on a
|
|
// specific network namespace. All the requests on the
|
|
// same netlink family share the same netlink socket,
|
|
// which gets released when the handle is deleted.
|
|
type Handle struct {
|
|
sockets map[int]*nl.SocketHandle
|
|
lookupByDump bool
|
|
}
|
|
|
|
// SupportsNetlinkFamily reports whether the passed netlink family is supported by this Handle
|
|
func (h *Handle) SupportsNetlinkFamily(nlFamily int) bool {
|
|
_, ok := h.sockets[nlFamily]
|
|
return ok
|
|
}
|
|
|
|
// NewHandle returns a netlink handle on the current network namespace.
|
|
// Caller may specify the netlink families the handle should support.
|
|
// If no families are specified, all the families the netlink package
|
|
// supports will be automatically added.
|
|
func NewHandle(nlFamilies ...int) (*Handle, error) {
|
|
return newHandle(netns.None(), netns.None(), nlFamilies...)
|
|
}
|
|
|
|
// SetSocketTimeout sets the send and receive timeout for each socket in the
|
|
// netlink handle. Although the socket timeout has granularity of one
|
|
// microsecond, the effective granularity is floored by the kernel timer tick,
|
|
// which default value is four milliseconds.
|
|
func (h *Handle) SetSocketTimeout(to time.Duration) error {
|
|
if to < time.Microsecond {
|
|
return fmt.Errorf("invalid timeout, minimul value is %s", time.Microsecond)
|
|
}
|
|
tv := syscall.NsecToTimeval(to.Nanoseconds())
|
|
for _, sh := range h.sockets {
|
|
fd := sh.Socket.GetFd()
|
|
err := syscall.SetsockoptTimeval(fd, syscall.SOL_SOCKET, syscall.SO_RCVTIMEO, &tv)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
err = syscall.SetsockoptTimeval(fd, syscall.SOL_SOCKET, syscall.SO_SNDTIMEO, &tv)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// NewHandle returns a netlink handle on the network namespace
|
|
// specified by ns. If ns=netns.None(), current network namespace
|
|
// will be assumed
|
|
func NewHandleAt(ns netns.NsHandle, nlFamilies ...int) (*Handle, error) {
|
|
return newHandle(ns, netns.None(), nlFamilies...)
|
|
}
|
|
|
|
// NewHandleAtFrom works as NewHandle but allows client to specify the
|
|
// new and the origin netns Handle.
|
|
func NewHandleAtFrom(newNs, curNs netns.NsHandle) (*Handle, error) {
|
|
return newHandle(newNs, curNs)
|
|
}
|
|
|
|
func newHandle(newNs, curNs netns.NsHandle, nlFamilies ...int) (*Handle, error) {
|
|
h := &Handle{sockets: map[int]*nl.SocketHandle{}}
|
|
fams := nl.SupportedNlFamilies
|
|
if len(nlFamilies) != 0 {
|
|
fams = nlFamilies
|
|
}
|
|
for _, f := range fams {
|
|
s, err := nl.GetNetlinkSocketAt(newNs, curNs, f)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
h.sockets[f] = &nl.SocketHandle{Socket: s}
|
|
}
|
|
return h, nil
|
|
}
|
|
|
|
// Delete releases the resources allocated to this handle
|
|
func (h *Handle) Delete() {
|
|
for _, sh := range h.sockets {
|
|
sh.Close()
|
|
}
|
|
h.sockets = nil
|
|
}
|
|
|
|
func (h *Handle) newNetlinkRequest(proto, flags int) *nl.NetlinkRequest {
|
|
// Do this so that package API still use nl package variable nextSeqNr
|
|
if h.sockets == nil {
|
|
return nl.NewNetlinkRequest(proto, flags)
|
|
}
|
|
return &nl.NetlinkRequest{
|
|
NlMsghdr: syscall.NlMsghdr{
|
|
Len: uint32(syscall.SizeofNlMsghdr),
|
|
Type: uint16(proto),
|
|
Flags: syscall.NLM_F_REQUEST | uint16(flags),
|
|
},
|
|
Sockets: h.sockets,
|
|
}
|
|
}
|