/usr/share/gocode/src/github.com/docker/libnetwork/ipams/remote/remote.go is in golang-github-docker-libnetwork-dev 0.8.0-dev.2+git20170202.599.45b4086-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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import (
"fmt"
"net"
"github.com/Sirupsen/logrus"
"github.com/docker/docker/pkg/plugins"
"github.com/docker/libnetwork/discoverapi"
"github.com/docker/libnetwork/ipamapi"
"github.com/docker/libnetwork/ipams/remote/api"
"github.com/docker/libnetwork/types"
)
type allocator struct {
endpoint *plugins.Client
name string
}
// PluginResponse is the interface for the plugin request responses
type PluginResponse interface {
IsSuccess() bool
GetError() string
}
func newAllocator(name string, client *plugins.Client) ipamapi.Ipam {
a := &allocator{name: name, endpoint: client}
return a
}
// Init registers a remote ipam when its plugin is activated
func Init(cb ipamapi.Callback, l, g interface{}) error {
newPluginHandler := func(name string, client *plugins.Client) {
a := newAllocator(name, client)
if cps, err := a.(*allocator).getCapabilities(); err == nil {
if err := cb.RegisterIpamDriverWithCapabilities(name, a, cps); err != nil {
logrus.Errorf("error registering remote ipam driver %s due to %v", name, err)
}
} else {
logrus.Infof("remote ipam driver %s does not support capabilities", name)
logrus.Debug(err)
if err := cb.RegisterIpamDriver(name, a); err != nil {
logrus.Errorf("error registering remote ipam driver %s due to %v", name, err)
}
}
}
// Unit test code is unaware of a true PluginStore. So we fall back to v1 plugins.
handleFunc := plugins.Handle
if pg := cb.GetPluginGetter(); pg != nil {
handleFunc = pg.Handle
activePlugins := pg.GetAllManagedPluginsByCap(ipamapi.PluginEndpointType)
for _, ap := range activePlugins {
newPluginHandler(ap.Name(), ap.Client())
}
}
handleFunc(ipamapi.PluginEndpointType, newPluginHandler)
return nil
}
func (a *allocator) call(methodName string, arg interface{}, retVal PluginResponse) error {
method := ipamapi.PluginEndpointType + "." + methodName
err := a.endpoint.Call(method, arg, retVal)
if err != nil {
return err
}
if !retVal.IsSuccess() {
return fmt.Errorf("remote: %s", retVal.GetError())
}
return nil
}
func (a *allocator) getCapabilities() (*ipamapi.Capability, error) {
var res api.GetCapabilityResponse
if err := a.call("GetCapabilities", nil, &res); err != nil {
return nil, err
}
return res.ToCapability(), nil
}
// GetDefaultAddressSpaces returns the local and global default address spaces
func (a *allocator) GetDefaultAddressSpaces() (string, string, error) {
res := &api.GetAddressSpacesResponse{}
if err := a.call("GetDefaultAddressSpaces", nil, res); err != nil {
return "", "", err
}
return res.LocalDefaultAddressSpace, res.GlobalDefaultAddressSpace, nil
}
// RequestPool requests an address pool in the specified address space
func (a *allocator) RequestPool(addressSpace, pool, subPool string, options map[string]string, v6 bool) (string, *net.IPNet, map[string]string, error) {
req := &api.RequestPoolRequest{AddressSpace: addressSpace, Pool: pool, SubPool: subPool, Options: options, V6: v6}
res := &api.RequestPoolResponse{}
if err := a.call("RequestPool", req, res); err != nil {
return "", nil, nil, err
}
retPool, err := types.ParseCIDR(res.Pool)
return res.PoolID, retPool, res.Data, err
}
// ReleasePool removes an address pool from the specified address space
func (a *allocator) ReleasePool(poolID string) error {
req := &api.ReleasePoolRequest{PoolID: poolID}
res := &api.ReleasePoolResponse{}
return a.call("ReleasePool", req, res)
}
// RequestAddress requests an address from the address pool
func (a *allocator) RequestAddress(poolID string, address net.IP, options map[string]string) (*net.IPNet, map[string]string, error) {
var (
prefAddress string
retAddress *net.IPNet
err error
)
if address != nil {
prefAddress = address.String()
}
req := &api.RequestAddressRequest{PoolID: poolID, Address: prefAddress, Options: options}
res := &api.RequestAddressResponse{}
if err := a.call("RequestAddress", req, res); err != nil {
return nil, nil, err
}
if res.Address != "" {
retAddress, err = types.ParseCIDR(res.Address)
} else {
return nil, nil, ipamapi.ErrNoIPReturned
}
return retAddress, res.Data, err
}
// ReleaseAddress releases the address from the specified address pool
func (a *allocator) ReleaseAddress(poolID string, address net.IP) error {
var relAddress string
if address != nil {
relAddress = address.String()
}
req := &api.ReleaseAddressRequest{PoolID: poolID, Address: relAddress}
res := &api.ReleaseAddressResponse{}
return a.call("ReleaseAddress", req, res)
}
// DiscoverNew is a notification for a new discovery event, such as a new global datastore
func (a *allocator) DiscoverNew(dType discoverapi.DiscoveryType, data interface{}) error {
return nil
}
// DiscoverDelete is a notification for a discovery delete event, such as a node leaving a cluster
func (a *allocator) DiscoverDelete(dType discoverapi.DiscoveryType, data interface{}) error {
return nil
}
func (a *allocator) IsBuiltIn() bool {
return false
}
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