/usr/share/gocode/src/github.com/docker/libnetwork/drivers/solaris/overlay/overlay.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.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 | package overlay
//go:generate protoc -I.:../../Godeps/_workspace/src/github.com/gogo/protobuf --gogo_out=import_path=github.com/docker/libnetwork/drivers/overlay,Mgogoproto/gogo.proto=github.com/gogo/protobuf/gogoproto:. overlay.proto
import (
"fmt"
"net"
"sync"
"github.com/Sirupsen/logrus"
"github.com/docker/libnetwork/datastore"
"github.com/docker/libnetwork/discoverapi"
"github.com/docker/libnetwork/driverapi"
"github.com/docker/libnetwork/idm"
"github.com/docker/libnetwork/netlabel"
"github.com/docker/libnetwork/osl"
"github.com/docker/libnetwork/types"
"github.com/hashicorp/serf/serf"
)
// XXX OVERLAY_SOLARIS
// Might need changes for names/constant values in solaris
const (
networkType = "overlay"
vethPrefix = "veth"
vethLen = 7
vxlanIDStart = 256
vxlanIDEnd = (1 << 24) - 1
vxlanPort = 4789
vxlanEncap = 50
secureOption = "encrypted"
)
var initVxlanIdm = make(chan (bool), 1)
type driver struct {
eventCh chan serf.Event
notifyCh chan ovNotify
exitCh chan chan struct{}
bindAddress string
advertiseAddress string
neighIP string
config map[string]interface{}
peerDb peerNetworkMap
secMap *encrMap
serfInstance *serf.Serf
networks networkTable
store datastore.DataStore
localStore datastore.DataStore
vxlanIdm *idm.Idm
once sync.Once
joinOnce sync.Once
keys []*key
sync.Mutex
}
// Init registers a new instance of overlay driver
func Init(dc driverapi.DriverCallback, config map[string]interface{}) error {
c := driverapi.Capability{
DataScope: datastore.GlobalScope,
}
d := &driver{
networks: networkTable{},
peerDb: peerNetworkMap{
mp: map[string]*peerMap{},
},
secMap: &encrMap{nodes: map[string][]*spi{}},
config: config,
}
if data, ok := config[netlabel.GlobalKVClient]; ok {
var err error
dsc, ok := data.(discoverapi.DatastoreConfigData)
if !ok {
return types.InternalErrorf("incorrect data in datastore configuration: %v", data)
}
d.store, err = datastore.NewDataStoreFromConfig(dsc)
if err != nil {
return types.InternalErrorf("failed to initialize data store: %v", err)
}
}
if data, ok := config[netlabel.LocalKVClient]; ok {
var err error
dsc, ok := data.(discoverapi.DatastoreConfigData)
if !ok {
return types.InternalErrorf("incorrect data in datastore configuration: %v", data)
}
d.localStore, err = datastore.NewDataStoreFromConfig(dsc)
if err != nil {
return types.InternalErrorf("failed to initialize local data store: %v", err)
}
}
d.restoreEndpoints()
return dc.RegisterDriver(networkType, d, c)
}
// Endpoints are stored in the local store. Restore them and reconstruct the overlay sandbox
func (d *driver) restoreEndpoints() error {
if d.localStore == nil {
logrus.Warnf("Cannot restore overlay endpoints because local datastore is missing")
return nil
}
kvol, err := d.localStore.List(datastore.Key(overlayEndpointPrefix), &endpoint{})
if err != nil && err != datastore.ErrKeyNotFound {
return fmt.Errorf("failed to read overlay endpoint from store: %v", err)
}
if err == datastore.ErrKeyNotFound {
return nil
}
for _, kvo := range kvol {
ep := kvo.(*endpoint)
n := d.network(ep.nid)
if n == nil {
logrus.Debugf("Network (%s) not found for restored endpoint (%s)", ep.nid[0:7], ep.id[0:7])
logrus.Debugf("Deleting stale overlay endpoint (%s) from store", ep.id[0:7])
if err := d.deleteEndpointFromStore(ep); err != nil {
logrus.Debugf("Failed to delete stale overlay endpoint (%s) from store", ep.id[0:7])
}
continue
}
n.addEndpoint(ep)
s := n.getSubnetforIP(ep.addr)
if s == nil {
return fmt.Errorf("could not find subnet for endpoint %s", ep.id)
}
if err := n.joinSandbox(true); err != nil {
return fmt.Errorf("restore network sandbox failed: %v", err)
}
if err := n.joinSubnetSandbox(s, true); err != nil {
return fmt.Errorf("restore subnet sandbox failed for %q: %v", s.subnetIP.String(), err)
}
Ifaces := make(map[string][]osl.IfaceOption)
vethIfaceOption := make([]osl.IfaceOption, 1)
vethIfaceOption = append(vethIfaceOption, n.sbox.InterfaceOptions().Master(s.brName))
Ifaces[fmt.Sprintf("%s+%s", "veth", "veth")] = vethIfaceOption
err := n.sbox.Restore(Ifaces, nil, nil, nil)
if err != nil {
return fmt.Errorf("failed to restore overlay sandbox: %v", err)
}
n.incEndpointCount()
d.peerDbAdd(ep.nid, ep.id, ep.addr.IP, ep.addr.Mask, ep.mac, net.ParseIP(d.advertiseAddress), true)
}
return nil
}
// Fini cleans up the driver resources
func Fini(drv driverapi.Driver) {
d := drv.(*driver)
if d.exitCh != nil {
waitCh := make(chan struct{})
d.exitCh <- waitCh
<-waitCh
}
}
func (d *driver) configure() error {
if d.store == nil {
return nil
}
if d.vxlanIdm == nil {
return d.initializeVxlanIdm()
}
return nil
}
func (d *driver) initializeVxlanIdm() error {
var err error
initVxlanIdm <- true
defer func() { <-initVxlanIdm }()
if d.vxlanIdm != nil {
return nil
}
d.vxlanIdm, err = idm.New(d.store, "vxlan-id", vxlanIDStart, vxlanIDEnd)
if err != nil {
return fmt.Errorf("failed to initialize vxlan id manager: %v", err)
}
return nil
}
func (d *driver) Type() string {
return networkType
}
func (d *driver) IsBuiltIn() bool {
return true
}
func validateSelf(node string) error {
advIP := net.ParseIP(node)
if advIP == nil {
return fmt.Errorf("invalid self address (%s)", node)
}
addrs, err := net.InterfaceAddrs()
if err != nil {
return fmt.Errorf("Unable to get interface addresses %v", err)
}
for _, addr := range addrs {
ip, _, err := net.ParseCIDR(addr.String())
if err == nil && ip.Equal(advIP) {
return nil
}
}
return fmt.Errorf("Multi-Host overlay networking requires cluster-advertise(%s) to be configured with a local ip-address that is reachable within the cluster", advIP.String())
}
func (d *driver) nodeJoin(advertiseAddress, bindAddress string, self bool) {
if self && !d.isSerfAlive() {
d.Lock()
d.advertiseAddress = advertiseAddress
d.bindAddress = bindAddress
d.Unlock()
// If there is no cluster store there is no need to start serf.
if d.store != nil {
if err := validateSelf(advertiseAddress); err != nil {
logrus.Warnf("%s", err.Error())
}
err := d.serfInit()
if err != nil {
logrus.Errorf("initializing serf instance failed: %v", err)
d.Lock()
d.advertiseAddress = ""
d.bindAddress = ""
d.Unlock()
return
}
}
}
d.Lock()
if !self {
d.neighIP = advertiseAddress
}
neighIP := d.neighIP
d.Unlock()
if d.serfInstance != nil && neighIP != "" {
var err error
d.joinOnce.Do(func() {
err = d.serfJoin(neighIP)
if err == nil {
d.pushLocalDb()
}
})
if err != nil {
logrus.Errorf("joining serf neighbor %s failed: %v", advertiseAddress, err)
d.Lock()
d.joinOnce = sync.Once{}
d.Unlock()
return
}
}
}
func (d *driver) pushLocalEndpointEvent(action, nid, eid string) {
n := d.network(nid)
if n == nil {
logrus.Debugf("Error pushing local endpoint event for network %s", nid)
return
}
ep := n.endpoint(eid)
if ep == nil {
logrus.Debugf("Error pushing local endpoint event for ep %s / %s", nid, eid)
return
}
if !d.isSerfAlive() {
return
}
d.notifyCh <- ovNotify{
action: "join",
nw: n,
ep: ep,
}
}
// DiscoverNew is a notification for a new discovery event, such as a new node joining a cluster
func (d *driver) DiscoverNew(dType discoverapi.DiscoveryType, data interface{}) error {
var err error
switch dType {
case discoverapi.NodeDiscovery:
nodeData, ok := data.(discoverapi.NodeDiscoveryData)
if !ok || nodeData.Address == "" {
return fmt.Errorf("invalid discovery data")
}
d.nodeJoin(nodeData.Address, nodeData.BindAddress, nodeData.Self)
case discoverapi.DatastoreConfig:
if d.store != nil {
return types.ForbiddenErrorf("cannot accept datastore configuration: Overlay driver has a datastore configured already")
}
dsc, ok := data.(discoverapi.DatastoreConfigData)
if !ok {
return types.InternalErrorf("incorrect data in datastore configuration: %v", data)
}
d.store, err = datastore.NewDataStoreFromConfig(dsc)
if err != nil {
return types.InternalErrorf("failed to initialize data store: %v", err)
}
case discoverapi.EncryptionKeysConfig:
encrData, ok := data.(discoverapi.DriverEncryptionConfig)
if !ok {
return fmt.Errorf("invalid encryption key notification data")
}
keys := make([]*key, 0, len(encrData.Keys))
for i := 0; i < len(encrData.Keys); i++ {
k := &key{
value: encrData.Keys[i],
tag: uint32(encrData.Tags[i]),
}
keys = append(keys, k)
}
d.setKeys(keys)
case discoverapi.EncryptionKeysUpdate:
var newKey, delKey, priKey *key
encrData, ok := data.(discoverapi.DriverEncryptionUpdate)
if !ok {
return fmt.Errorf("invalid encryption key notification data")
}
if encrData.Key != nil {
newKey = &key{
value: encrData.Key,
tag: uint32(encrData.Tag),
}
}
if encrData.Primary != nil {
priKey = &key{
value: encrData.Primary,
tag: uint32(encrData.PrimaryTag),
}
}
if encrData.Prune != nil {
delKey = &key{
value: encrData.Prune,
tag: uint32(encrData.PruneTag),
}
}
d.updateKeys(newKey, priKey, delKey)
default:
}
return nil
}
// DiscoverDelete is a notification for a discovery delete event, such as a node leaving a cluster
func (d *driver) DiscoverDelete(dType discoverapi.DiscoveryType, data interface{}) error {
return nil
}
|