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Recover from transient gossip failures

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Currently if there is any transient gossip failure in any node the
recoevry process depends on other nodes propogating the information
indirectly. In cases if these transient failures affects all the nodes
that this node has in its memberlist then this node will be permenantly
cutoff from the the gossip channel. Added node state management code in
networkdb to address these problems by trying to rejoin the cluster via
the failed nodes when there is a failure. This also necessitates the
need to add new messages called node event messages to differentiate
between node leave and node failure.

Signed-off-by: Jana Radhakrishnan <mrjana@docker.com>
This commit is contained in:
Jana Radhakrishnan 2016-09-14 22:24:14 -07:00
parent cc0095b03e
commit 5f5dad3c02
7 changed files with 685 additions and 90 deletions
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52
libnetwork/networkdb/broadcast.go
View file

@ -1,10 +1,15 @@
package networkdb
import (
"fmt"
"time"
"github.com/hashicorp/memberlist"
"github.com/hashicorp/serf/serf"
)
const broadcastTimeout = 5 * time.Second
type networkEventMessage struct {
id string
node string
@ -44,6 +49,53 @@ func (nDB *NetworkDB) sendNetworkEvent(nid string, event NetworkEvent_Type, ltim
return nil
}
type nodeEventMessage struct {
msg []byte
notify chan<- struct{}
}
func (m *nodeEventMessage) Invalidates(other memberlist.Broadcast) bool {
return false
}
func (m *nodeEventMessage) Message() []byte {
return m.msg
}
func (m *nodeEventMessage) Finished() {
if m.notify != nil {
close(m.notify)
}
}
func (nDB *NetworkDB) sendNodeEvent(event NodeEvent_Type) error {
nEvent := NodeEvent{
Type: event,
LTime: nDB.networkClock.Increment(),
NodeName: nDB.config.NodeName,
}
raw, err := encodeMessage(MessageTypeNodeEvent, &nEvent)
if err != nil {
return err
}
notifyCh := make(chan struct{})
nDB.nodeBroadcasts.QueueBroadcast(&nodeEventMessage{
msg: raw,
notify: notifyCh,
})
// Wait for the broadcast
select {
case <-notifyCh:
case <-time.After(broadcastTimeout):
return fmt.Errorf("timed out broadcasting node event")
}
return nil
}
type tableEventMessage struct {
id string
tname string

105
libnetwork/networkdb/cluster.go
View file

@ -7,6 +7,7 @@ import (
"fmt"
"math/big"
rnd "math/rand"
"net"
"strings"
"time"
@ -14,7 +15,11 @@ import (
"github.com/hashicorp/memberlist"
)
const reapInterval = 30 * time.Second
const (
reapInterval = 60 * time.Second
reapPeriod = 5 * time.Second
retryInterval = 1 * time.Second
)
type logWriter struct{}
@ -111,6 +116,13 @@ func (nDB *NetworkDB) clusterInit() error {
RetransmitMult: config.RetransmitMult,
}
nDB.nodeBroadcasts = &memberlist.TransmitLimitedQueue{
NumNodes: func() int {
return len(nDB.nodes)
},
RetransmitMult: config.RetransmitMult,
}
mlist, err := memberlist.Create(config)
if err != nil {
return fmt.Errorf("failed to create memberlist: %v", err)
@ -124,9 +136,10 @@ func (nDB *NetworkDB) clusterInit() error {
interval time.Duration
fn func()
}{
{reapInterval, nDB.reapState},
{reapPeriod, nDB.reapState},
{config.GossipInterval, nDB.gossip},
{config.PushPullInterval, nDB.bulkSyncTables},
{retryInterval, nDB.reconnectNode},
} {
t := time.NewTicker(trigger.interval)
go nDB.triggerFunc(trigger.interval, t.C, nDB.stopCh, trigger.fn)
@ -136,19 +149,49 @@ func (nDB *NetworkDB) clusterInit() error {
return nil
}
func (nDB *NetworkDB) retryJoin(members []string, stop <-chan struct{}) {
t := time.NewTicker(retryInterval)
defer t.Stop()
for {
select {
case <-t.C:
if _, err := nDB.memberlist.Join(members); err != nil {
logrus.Errorf("Failed to join memberlist %s on retry: %v", members, err)
continue
}
return
case <-stop:
return
}
}
}
func (nDB *NetworkDB) clusterJoin(members []string) error {
mlist := nDB.memberlist
if _, err := mlist.Join(members); err != nil {
// Incase of failure, keep retrying join until it succeeds or the cluster is shutdown.
go nDB.retryJoin(members, nDB.stopCh)
return fmt.Errorf("could not join node to memberlist: %v", err)
}
if err := nDB.sendNodeEvent(NodeEventTypeJoin); err != nil {
return fmt.Errorf("failed to send node join: %v", err)
}
return nil
}
func (nDB *NetworkDB) clusterLeave() error {
mlist := nDB.memberlist
if err := nDB.sendNodeEvent(NodeEventTypeLeave); err != nil {
return fmt.Errorf("failed to send node leave: %v", err)
}
if err := mlist.Leave(time.Second); err != nil {
return err
}
@ -180,6 +223,42 @@ func (nDB *NetworkDB) triggerFunc(stagger time.Duration, C <-chan time.Time, sto
}
}
func (nDB *NetworkDB) reconnectNode() {
nDB.RLock()
if len(nDB.failedNodes) == 0 {
nDB.RUnlock()
return
}
nodes := make([]*node, 0, len(nDB.failedNodes))
for _, n := range nDB.failedNodes {
nodes = append(nodes, n)
}
nDB.RUnlock()
// Update all the local state to a new time to force update on
// the node we are trying to rejoin, just in case that node
// has these in leaving/deleting state still. This is
// facilitate fast convergence after recovering from a gossip
// failure.
nDB.updateLocalStateTime()
node := nodes[randomOffset(len(nodes))]
addr := net.UDPAddr{IP: node.Addr, Port: int(node.Port)}
if _, err := nDB.memberlist.Join([]string{addr.String()}); err != nil {
return
}
if err := nDB.sendNodeEvent(NodeEventTypeJoin); err != nil {
logrus.Errorf("failed to send node join during reconnect: %v", err)
return
}
logrus.Debugf("Initiating bulk sync with node %s after reconnect", node.Name)
nDB.bulkSync([]string{node.Name}, true)
}
func (nDB *NetworkDB) reapState() {
nDB.reapNetworks()
nDB.reapTableEntries()
@ -288,7 +367,7 @@ func (nDB *NetworkDB) gossip() {
}
// Send the compound message
if err := nDB.memberlist.SendToUDP(mnode, compound); err != nil {
if err := nDB.memberlist.SendToUDP(&mnode.Node, compound); err != nil {
logrus.Errorf("Failed to send gossip to %s: %s", mnode.Addr, err)
}
}
@ -323,7 +402,7 @@ func (nDB *NetworkDB) bulkSyncTables() {
continue
}
completed, err := nDB.bulkSync(nid, nodes, false)
completed, err := nDB.bulkSync(nodes, false)
if err != nil {
logrus.Errorf("periodic bulk sync failure for network %s: %v", nid, err)
continue
@ -350,7 +429,7 @@ func (nDB *NetworkDB) bulkSyncTables() {
}
}
func (nDB *NetworkDB) bulkSync(nid string, nodes []string, all bool) ([]string, error) {
func (nDB *NetworkDB) bulkSync(nodes []string, all bool) ([]string, error) {
if !all {
// If not all, then just pick one.
nodes = nDB.mRandomNodes(1, nodes)
@ -388,7 +467,12 @@ func (nDB *NetworkDB) bulkSync(nid string, nodes []string, all bool) ([]string,
func (nDB *NetworkDB) bulkSyncNode(networks []string, node string, unsolicited bool) error {
var msgs [][]byte
logrus.Debugf("%s: Initiating bulk sync for networks %v with node %s", nDB.config.NodeName, networks, node)
var unsolMsg string
if unsolicited {
unsolMsg = "unsolicited"
}
logrus.Debugf("%s: Initiating %s bulk sync for networks %v with node %s", nDB.config.NodeName, unsolMsg, networks, node)
nDB.RLock()
mnode := nDB.nodes[node]
@ -404,15 +488,14 @@ func (nDB *NetworkDB) bulkSyncNode(networks []string, node string, unsolicited b
return false
}
// Do not bulk sync state which is in the
// process of getting deleted.
eType := TableEventTypeCreate
if entry.deleting {
return false
eType = TableEventTypeDelete
}
params := strings.Split(path[1:], "/")
tEvent := TableEvent{
Type: TableEventTypeCreate,
Type: eType,
LTime: entry.ltime,
NodeName: entry.node,
NetworkID: nid,
@ -454,7 +537,7 @@ func (nDB *NetworkDB) bulkSyncNode(networks []string, node string, unsolicited b
nDB.bulkSyncAckTbl[node] = ch
nDB.Unlock()
err = nDB.memberlist.SendToTCP(mnode, buf)
err = nDB.memberlist.SendToTCP(&mnode.Node, buf)
if err != nil {
nDB.Lock()
delete(nDB.bulkSyncAckTbl, node)

87
libnetwork/networkdb/delegate.go
View file

@ -17,6 +17,56 @@ func (d *delegate) NodeMeta(limit int) []byte {
return []byte{}
}
func (nDB *NetworkDB) checkAndGetNode(nEvent *NodeEvent) *node {
nDB.Lock()
defer nDB.Unlock()
for _, nodes := range []map[string]*node{
nDB.failedNodes,
nDB.leftNodes,
nDB.nodes,
} {
if n, ok := nodes[nEvent.NodeName]; ok {
if n.ltime >= nEvent.LTime {
return nil
}
delete(nDB.failedNodes, n.Name)
return n
}
}
return nil
}
func (nDB *NetworkDB) handleNodeEvent(nEvent *NodeEvent) bool {
// Update our local clock if the received messages has newer
// time.
nDB.networkClock.Witness(nEvent.LTime)
n := nDB.checkAndGetNode(nEvent)
if n == nil {
return false
}
n.ltime = nEvent.LTime
switch nEvent.Type {
case NodeEventTypeJoin:
nDB.Lock()
nDB.nodes[n.Name] = n
nDB.Unlock()
return true
case NodeEventTypeLeave:
nDB.Lock()
nDB.leftNodes[n.Name] = n
nDB.Unlock()
return true
}
return false
}
func (nDB *NetworkDB) handleNetworkEvent(nEvent *NetworkEvent) bool {
// Update our local clock if the received messages has newer
// time.
@ -188,6 +238,27 @@ func (nDB *NetworkDB) handleTableMessage(buf []byte, isBulkSync bool) {
}
}
func (nDB *NetworkDB) handleNodeMessage(buf []byte) {
var nEvent NodeEvent
if err := proto.Unmarshal(buf, &nEvent); err != nil {
logrus.Errorf("Error decoding node event message: %v", err)
return
}
if rebroadcast := nDB.handleNodeEvent(&nEvent); rebroadcast {
var err error
buf, err = encodeRawMessage(MessageTypeNodeEvent, buf)
if err != nil {
logrus.Errorf("Error marshalling gossip message for node event rebroadcast: %v", err)
return
}
nDB.nodeBroadcasts.QueueBroadcast(&nodeEventMessage{
msg: buf,
})
}
}
func (nDB *NetworkDB) handleNetworkMessage(buf []byte) {
var nEvent NetworkEvent
if err := proto.Unmarshal(buf, &nEvent); err != nil {
@ -256,6 +327,8 @@ func (nDB *NetworkDB) handleMessage(buf []byte, isBulkSync bool) {
}
switch mType {
case MessageTypeNodeEvent:
nDB.handleNodeMessage(data)
case MessageTypeNetworkEvent:
nDB.handleNetworkMessage(data)
case MessageTypeTableEvent:
@ -278,7 +351,9 @@ func (d *delegate) NotifyMsg(buf []byte) {
}
func (d *delegate) GetBroadcasts(overhead, limit int) [][]byte {
return d.nDB.networkBroadcasts.GetBroadcasts(overhead, limit)
msgs := d.nDB.networkBroadcasts.GetBroadcasts(overhead, limit)
msgs = append(msgs, d.nDB.nodeBroadcasts.GetBroadcasts(overhead, limit)...)
return msgs
}
func (d *delegate) LocalState(join bool) []byte {
@ -286,7 +361,8 @@ func (d *delegate) LocalState(join bool) []byte {
defer d.nDB.RUnlock()
pp := NetworkPushPull{
LTime: d.nDB.networkClock.Time(),
LTime: d.nDB.networkClock.Time(),
NodeName: d.nDB.config.NodeName,
}
for name, nn := range d.nDB.networks {
@ -336,6 +412,13 @@ func (d *delegate) MergeRemoteState(buf []byte, isJoin bool) {
d.nDB.networkClock.Witness(pp.LTime)
}
nodeEvent := &NodeEvent{
LTime: pp.LTime,
NodeName: pp.NodeName,
Type: NodeEventTypeJoin,
}
d.nDB.handleNodeEvent(nodeEvent)
for _, n := range pp.Networks {
nEvent := &NetworkEvent{
LTime: n.LTime,

26
libnetwork/networkdb/event_delegate.go
View file

@ -6,17 +6,31 @@ type eventDelegate struct {
nDB *NetworkDB
}
func (e *eventDelegate) NotifyJoin(n *memberlist.Node) {
func (e *eventDelegate) NotifyJoin(mn *memberlist.Node) {
e.nDB.Lock()
e.nDB.nodes[n.Name] = n
// In case the node is rejoining after a failure or leave,
// wait until an explicit join message arrives before adding
// it to the nodes just to make sure this is not a stale
// join. If you don't know about this node add it immediately.
_, fOk := e.nDB.failedNodes[mn.Name]
_, lOk := e.nDB.leftNodes[mn.Name]
if fOk || lOk {
e.nDB.Unlock()
return
}
e.nDB.nodes[mn.Name] = &node{Node: *mn}
e.nDB.Unlock()
}
func (e *eventDelegate) NotifyLeave(n *memberlist.Node) {
e.nDB.deleteNodeTableEntries(n.Name)
e.nDB.deleteNetworkNodeEntries(n.Name)
func (e *eventDelegate) NotifyLeave(mn *memberlist.Node) {
e.nDB.deleteNodeTableEntries(mn.Name)
e.nDB.deleteNetworkEntriesForNode(mn.Name)
e.nDB.Lock()
delete(e.nDB.nodes, n.Name)
if n, ok := e.nDB.nodes[mn.Name]; ok {
delete(e.nDB.nodes, mn.Name)
e.nDB.failedNodes[mn.Name] = n
}
e.nDB.Unlock()
}

66
libnetwork/networkdb/networkdb.go
View file

@ -41,7 +41,13 @@ type NetworkDB struct {
// List of all peer nodes in the cluster not-limited to any
// network.
nodes map[string]*memberlist.Node
nodes map[string]*node
// List of all peer nodes which have failed
failedNodes map[string]*node
// List of all peer nodes which have left
leftNodes map[string]*node
// A multi-dimensional map of network/node attachmemts. The
// first key is a node name and the second key is a network ID
@ -66,6 +72,9 @@ type NetworkDB struct {
// Broadcast queue for network event gossip.
networkBroadcasts *memberlist.TransmitLimitedQueue
// Broadcast queue for node event gossip.
nodeBroadcasts *memberlist.TransmitLimitedQueue
// A central stop channel to stop all go routines running on
// behalf of the NetworkDB instance.
stopCh chan struct{}
@ -82,6 +91,11 @@ type NetworkDB struct {
keyring *memberlist.Keyring
}
type node struct {
memberlist.Node
ltime serf.LamportTime
}
// network describes the node/network attachment.
type network struct {
// Network ID
@ -146,7 +160,9 @@ func New(c *Config) (*NetworkDB, error) {
config: c,
indexes: make(map[int]*radix.Tree),
networks: make(map[string]map[string]*network),
nodes: make(map[string]*memberlist.Node),
nodes: make(map[string]*node),
failedNodes: make(map[string]*node),
leftNodes: make(map[string]*node),
networkNodes: make(map[string][]string),
bulkSyncAckTbl: make(map[string]chan struct{}),
broadcaster: events.NewBroadcaster(),
@ -203,10 +219,9 @@ func (nDB *NetworkDB) getEntry(tname, nid, key string) (*entry, error) {
// table, key) tuple and if the NetworkDB is part of the cluster
// propogates this event to the cluster. It is an error to create an
// entry for the same tuple for which there is already an existing
// entry unless the current entry is deleting state.
// entry.
func (nDB *NetworkDB) CreateEntry(tname, nid, key string, value []byte) error {
e, _ := nDB.getEntry(tname, nid, key)
if e != nil && !e.deleting {
if _, err := nDB.GetEntry(tname, nid, key); err == nil {
return fmt.Errorf("cannot create entry as the entry in table %s with network id %s and key %s already exists", tname, nid, key)
}
@ -287,7 +302,7 @@ func (nDB *NetworkDB) DeleteEntry(tname, nid, key string) error {
return nil
}
func (nDB *NetworkDB) deleteNetworkNodeEntries(deletedNode string) {
func (nDB *NetworkDB) deleteNetworkEntriesForNode(deletedNode string) {
nDB.Lock()
for nid, nodes := range nDB.networkNodes {
updatedNodes := make([]string, 0, len(nodes))
@ -301,6 +316,8 @@ func (nDB *NetworkDB) deleteNetworkNodeEntries(deletedNode string) {
nDB.networkNodes[nid] = updatedNodes
}
delete(nDB.networks, deletedNode)
nDB.Unlock()
}
@ -390,7 +407,7 @@ func (nDB *NetworkDB) JoinNetwork(nid string) error {
}
logrus.Debugf("%s: joined network %s", nDB.config.NodeName, nid)
if _, err := nDB.bulkSync(nid, networkNodes, true); err != nil {
if _, err := nDB.bulkSync(networkNodes, true); err != nil {
logrus.Errorf("Error bulk syncing while joining network %s: %v", nid, err)
}
@ -493,10 +510,41 @@ func (nDB *NetworkDB) findCommonNetworks(nodeName string) []string {
var networks []string
for nid := range nDB.networks[nDB.config.NodeName] {
if _, ok := nDB.networks[nodeName][nid]; ok {
networks = append(networks, nid)
if n, ok := nDB.networks[nodeName][nid]; ok {
if !n.leaving {
networks = append(networks, nid)
}
}
}
return networks
}
func (nDB *NetworkDB) updateLocalStateTime() {
nDB.Lock()
defer nDB.Unlock()
ltime := nDB.networkClock.Increment()
for _, n := range nDB.networks[nDB.config.NodeName] {
n.ltime = ltime
}
ltime = nDB.tableClock.Increment()
nDB.indexes[byTable].Walk(func(path string, v interface{}) bool {
entry := v.(*entry)
if entry.node != nDB.config.NodeName {
return false
}
params := strings.Split(path[1:], "/")
tname := params[0]
nid := params[1]
key := params[2]
entry.ltime = ltime
nDB.indexes[byTable].Insert(fmt.Sprintf("/%s/%s/%s", tname, nid, key), entry)
nDB.indexes[byNetwork].Insert(fmt.Sprintf("/%s/%s/%s", nid, tname, key), entry)
return false
})
}

412
libnetwork/networkdb/networkdb.pb.go
View file

@ -10,6 +10,7 @@
It has these top-level messages:
GossipMessage
NodeEvent
NetworkEvent
NetworkEntry
NetworkPushPull
@ -67,6 +68,9 @@ const (
// which is a pack of many message of above types, packed into
// a single compound message.
MessageTypeCompound MessageType = 5
// NodeEvent message type is used to communicare node
// join/leave events in the cluster
MessageTypeNodeEvent MessageType = 6
)
var MessageType_name = map[int32]string{
@ -76,6 +80,7 @@ var MessageType_name = map[int32]string{
3: "PUSH_PULL",
4: "BULK_SYNC",
5: "COMPOUND",
6: "NODE_EVENT",
}
var MessageType_value = map[string]int32{
"INVALID": 0,
@ -84,6 +89,7 @@ var MessageType_value = map[string]int32{
"PUSH_PULL": 3,
"BULK_SYNC": 4,
"COMPOUND": 5,
"NODE_EVENT": 6,
}
func (x MessageType) String() string {
@ -91,6 +97,32 @@ func (x MessageType) String() string {
}
func (MessageType) EnumDescriptor() ([]byte, []int) { return fileDescriptorNetworkdb, []int{0} }
type NodeEvent_Type int32
const (
NodeEventTypeInvalid NodeEvent_Type = 0
// Join event is generated when this node joins the cluster.
NodeEventTypeJoin NodeEvent_Type = 1
// Leave event is generated when this node leaves the cluster.
NodeEventTypeLeave NodeEvent_Type = 2
)
var NodeEvent_Type_name = map[int32]string{
0: "INVALID",
1: "JOIN",
2: "LEAVE",
}
var NodeEvent_Type_value = map[string]int32{
"INVALID": 0,
"JOIN": 1,
"LEAVE": 2,
}
func (x NodeEvent_Type) String() string {
return proto.EnumName(NodeEvent_Type_name, int32(x))
}
func (NodeEvent_Type) EnumDescriptor() ([]byte, []int) { return fileDescriptorNetworkdb, []int{1, 0} }
type NetworkEvent_Type int32
const (
@ -115,7 +147,7 @@ var NetworkEvent_Type_value = map[string]int32{
func (x NetworkEvent_Type) String() string {
return proto.EnumName(NetworkEvent_Type_name, int32(x))
}
func (NetworkEvent_Type) EnumDescriptor() ([]byte, []int) { return fileDescriptorNetworkdb, []int{1, 0} }
func (NetworkEvent_Type) EnumDescriptor() ([]byte, []int) { return fileDescriptorNetworkdb, []int{2, 0} }
type TableEvent_Type int32
@ -148,7 +180,7 @@ var TableEvent_Type_value = map[string]int32{
func (x TableEvent_Type) String() string {
return proto.EnumName(TableEvent_Type_name, int32(x))
}
func (TableEvent_Type) EnumDescriptor() ([]byte, []int) { return fileDescriptorNetworkdb, []int{4, 0} }
func (TableEvent_Type) EnumDescriptor() ([]byte, []int) { return fileDescriptorNetworkdb, []int{5, 0} }
// GossipMessage is a basic message header used by all messages types.
type GossipMessage struct {
@ -160,6 +192,21 @@ func (m *GossipMessage) Reset() { *m = GossipMessage{} }
func (*GossipMessage) ProtoMessage() {}
func (*GossipMessage) Descriptor() ([]byte, []int) { return fileDescriptorNetworkdb, []int{0} }
// NodeEvent message payload definition.
type NodeEvent struct {
Type NodeEvent_Type `protobuf:"varint,1,opt,name=type,proto3,enum=networkdb.NodeEvent_Type" json:"type,omitempty"`
// Lamport time using a network lamport clock indicating the
// time this event was generated on the node where it was
// generated.
LTime github_com_hashicorp_serf_serf.LamportTime `protobuf:"varint,2,opt,name=l_time,json=lTime,proto3,customtype=github.com/hashicorp/serf/serf.LamportTime" json:"l_time"`
// Source node name.
NodeName string `protobuf:"bytes,3,opt,name=node_name,json=nodeName,proto3" json:"node_name,omitempty"`
}
func (m *NodeEvent) Reset() { *m = NodeEvent{} }
func (*NodeEvent) ProtoMessage() {}
func (*NodeEvent) Descriptor() ([]byte, []int) { return fileDescriptorNetworkdb, []int{1} }
// NetworkEvent message payload definition.
type NetworkEvent struct {
Type NetworkEvent_Type `protobuf:"varint,1,opt,name=type,proto3,enum=networkdb.NetworkEvent_Type" json:"type,omitempty"`
@ -175,7 +222,7 @@ type NetworkEvent struct {
func (m *NetworkEvent) Reset() { *m = NetworkEvent{} }
func (*NetworkEvent) ProtoMessage() {}
func (*NetworkEvent) Descriptor() ([]byte, []int) { return fileDescriptorNetworkdb, []int{1} }
func (*NetworkEvent) Descriptor() ([]byte, []int) { return fileDescriptorNetworkdb, []int{2} }
// NetworkEntry for push pull of networks.
type NetworkEntry struct {
@ -192,18 +239,20 @@ type NetworkEntry struct {
func (m *NetworkEntry) Reset() { *m = NetworkEntry{} }
func (*NetworkEntry) ProtoMessage() {}
func (*NetworkEntry) Descriptor() ([]byte, []int) { return fileDescriptorNetworkdb, []int{2} }
func (*NetworkEntry) Descriptor() ([]byte, []int) { return fileDescriptorNetworkdb, []int{3} }
// NetworkPushpull message payload definition.
type NetworkPushPull struct {
// Lamport time when this push pull was initiated.
LTime github_com_hashicorp_serf_serf.LamportTime `protobuf:"varint,1,opt,name=l_time,json=lTime,proto3,customtype=github.com/hashicorp/serf/serf.LamportTime" json:"l_time"`
Networks []*NetworkEntry `protobuf:"bytes,2,rep,name=networks" json:"networks,omitempty"`
// Name of the node sending this push pull payload.
NodeName string `protobuf:"bytes,3,opt,name=node_name,json=nodeName,proto3" json:"node_name,omitempty"`
}
func (m *NetworkPushPull) Reset() { *m = NetworkPushPull{} }
func (*NetworkPushPull) ProtoMessage() {}
func (*NetworkPushPull) Descriptor() ([]byte, []int) { return fileDescriptorNetworkdb, []int{3} }
func (*NetworkPushPull) Descriptor() ([]byte, []int) { return fileDescriptorNetworkdb, []int{4} }
func (m *NetworkPushPull) GetNetworks() []*NetworkEntry {
if m != nil {
@ -231,7 +280,7 @@ type TableEvent struct {
func (m *TableEvent) Reset() { *m = TableEvent{} }
func (*TableEvent) ProtoMessage() {}
func (*TableEvent) Descriptor() ([]byte, []int) { return fileDescriptorNetworkdb, []int{4} }
func (*TableEvent) Descriptor() ([]byte, []int) { return fileDescriptorNetworkdb, []int{5} }
// BulkSync message payload definition.
type BulkSyncMessage struct {
@ -251,7 +300,7 @@ type BulkSyncMessage struct {
func (m *BulkSyncMessage) Reset() { *m = BulkSyncMessage{} }
func (*BulkSyncMessage) ProtoMessage() {}
func (*BulkSyncMessage) Descriptor() ([]byte, []int) { return fileDescriptorNetworkdb, []int{5} }
func (*BulkSyncMessage) Descriptor() ([]byte, []int) { return fileDescriptorNetworkdb, []int{6} }
// Compound message payload definition.
type CompoundMessage struct {
@ -261,7 +310,7 @@ type CompoundMessage struct {
func (m *CompoundMessage) Reset() { *m = CompoundMessage{} }
func (*CompoundMessage) ProtoMessage() {}
func (*CompoundMessage) Descriptor() ([]byte, []int) { return fileDescriptorNetworkdb, []int{6} }
func (*CompoundMessage) Descriptor() ([]byte, []int) { return fileDescriptorNetworkdb, []int{7} }
func (m *CompoundMessage) GetMessages() []*CompoundMessage_SimpleMessage {
if m != nil {
@ -279,11 +328,12 @@ type CompoundMessage_SimpleMessage struct {
func (m *CompoundMessage_SimpleMessage) Reset() { *m = CompoundMessage_SimpleMessage{} }
func (*CompoundMessage_SimpleMessage) ProtoMessage() {}
func (*CompoundMessage_SimpleMessage) Descriptor() ([]byte, []int) {
return fileDescriptorNetworkdb, []int{6, 0}
return fileDescriptorNetworkdb, []int{7, 0}
}
func init() {
proto.RegisterType((*GossipMessage)(nil), "networkdb.GossipMessage")
proto.RegisterType((*NodeEvent)(nil), "networkdb.NodeEvent")
proto.RegisterType((*NetworkEvent)(nil), "networkdb.NetworkEvent")
proto.RegisterType((*NetworkEntry)(nil), "networkdb.NetworkEntry")
proto.RegisterType((*NetworkPushPull)(nil), "networkdb.NetworkPushPull")
@ -292,6 +342,7 @@ func init() {
proto.RegisterType((*CompoundMessage)(nil), "networkdb.CompoundMessage")
proto.RegisterType((*CompoundMessage_SimpleMessage)(nil), "networkdb.CompoundMessage.SimpleMessage")
proto.RegisterEnum("networkdb.MessageType", MessageType_name, MessageType_value)
proto.RegisterEnum("networkdb.NodeEvent_Type", NodeEvent_Type_name, NodeEvent_Type_value)
proto.RegisterEnum("networkdb.NetworkEvent_Type", NetworkEvent_Type_name, NetworkEvent_Type_value)
proto.RegisterEnum("networkdb.TableEvent_Type", TableEvent_Type_name, TableEvent_Type_value)
}
@ -306,6 +357,18 @@ func (this *GossipMessage) GoString() string {
s = append(s, "}")
return strings.Join(s, "")
}
func (this *NodeEvent) GoString() string {
if this == nil {
return "nil"
}
s := make([]string, 0, 7)
s = append(s, "&networkdb.NodeEvent{")
s = append(s, "Type: "+fmt.Sprintf("%#v", this.Type)+",\n")
s = append(s, "LTime: "+fmt.Sprintf("%#v", this.LTime)+",\n")
s = append(s, "NodeName: "+fmt.Sprintf("%#v", this.NodeName)+",\n")
s = append(s, "}")
return strings.Join(s, "")
}
func (this *NetworkEvent) GoString() string {
if this == nil {
return "nil"
@ -336,12 +399,13 @@ func (this *NetworkPushPull) GoString() string {
if this == nil {
return "nil"
}
s := make([]string, 0, 6)
s := make([]string, 0, 7)
s = append(s, "&networkdb.NetworkPushPull{")
s = append(s, "LTime: "+fmt.Sprintf("%#v", this.LTime)+",\n")
if this.Networks != nil {
s = append(s, "Networks: "+fmt.Sprintf("%#v", this.Networks)+",\n")
}
s = append(s, "NodeName: "+fmt.Sprintf("%#v", this.NodeName)+",\n")
s = append(s, "}")
return strings.Join(s, "")
}
@ -451,6 +515,40 @@ func (m *GossipMessage) MarshalTo(data []byte) (int, error) {
return i, nil
}
func (m *NodeEvent) Marshal() (data []byte, err error) {
size := m.Size()
data = make([]byte, size)
n, err := m.MarshalTo(data)
if err != nil {
return nil, err
}
return data[:n], nil
}
func (m *NodeEvent) MarshalTo(data []byte) (int, error) {
var i int
_ = i
var l int
_ = l
if m.Type != 0 {
data[i] = 0x8
i++
i = encodeVarintNetworkdb(data, i, uint64(m.Type))
}
if m.LTime != 0 {
data[i] = 0x10
i++
i = encodeVarintNetworkdb(data, i, uint64(m.LTime))
}
if len(m.NodeName) > 0 {
data[i] = 0x1a
i++
i = encodeVarintNetworkdb(data, i, uint64(len(m.NodeName)))
i += copy(data[i:], m.NodeName)
}
return i, nil
}
func (m *NetworkEvent) Marshal() (data []byte, err error) {
size := m.Size()
data = make([]byte, size)
@ -568,6 +666,12 @@ func (m *NetworkPushPull) MarshalTo(data []byte) (int, error) {
i += n
}
}
if len(m.NodeName) > 0 {
data[i] = 0x1a
i++
i = encodeVarintNetworkdb(data, i, uint64(len(m.NodeName)))
i += copy(data[i:], m.NodeName)
}
return i, nil
}
@ -783,6 +887,22 @@ func (m *GossipMessage) Size() (n int) {
return n
}
func (m *NodeEvent) Size() (n int) {
var l int
_ = l
if m.Type != 0 {
n += 1 + sovNetworkdb(uint64(m.Type))
}
if m.LTime != 0 {
n += 1 + sovNetworkdb(uint64(m.LTime))
}
l = len(m.NodeName)
if l > 0 {
n += 1 + l + sovNetworkdb(uint64(l))
}
return n
}
func (m *NetworkEvent) Size() (n int) {
var l int
_ = l
@ -835,6 +955,10 @@ func (m *NetworkPushPull) Size() (n int) {
n += 1 + l + sovNetworkdb(uint64(l))
}
}
l = len(m.NodeName)
if l > 0 {
n += 1 + l + sovNetworkdb(uint64(l))
}
return n
}
@ -942,6 +1066,18 @@ func (this *GossipMessage) String() string {
}, "")
return s
}
func (this *NodeEvent) String() string {
if this == nil {
return "nil"
}
s := strings.Join([]string{`&NodeEvent{`,
`Type:` + fmt.Sprintf("%v", this.Type) + `,`,
`LTime:` + fmt.Sprintf("%v", this.LTime) + `,`,
`NodeName:` + fmt.Sprintf("%v", this.NodeName) + `,`,
`}`,
}, "")
return s
}
func (this *NetworkEvent) String() string {
if this == nil {
return "nil"
@ -975,6 +1111,7 @@ func (this *NetworkPushPull) String() string {
s := strings.Join([]string{`&NetworkPushPull{`,
`LTime:` + fmt.Sprintf("%v", this.LTime) + `,`,
`Networks:` + strings.Replace(fmt.Sprintf("%v", this.Networks), "NetworkEntry", "NetworkEntry", 1) + `,`,
`NodeName:` + fmt.Sprintf("%v", this.NodeName) + `,`,
`}`,
}, "")
return s
@ -1137,6 +1274,123 @@ func (m *GossipMessage) Unmarshal(data []byte) error {
}
return nil
}
func (m *NodeEvent) Unmarshal(data []byte) error {
l := len(data)
iNdEx := 0
for iNdEx < l {
preIndex := iNdEx
var wire uint64
for shift := uint(0); ; shift += 7 {
if shift >= 64 {
return ErrIntOverflowNetworkdb
}
if iNdEx >= l {
return io.ErrUnexpectedEOF
}
b := data[iNdEx]
iNdEx++
wire |= (uint64(b) & 0x7F) << shift
if b < 0x80 {
break
}
}
fieldNum := int32(wire >> 3)
wireType := int(wire & 0x7)
if wireType == 4 {
return fmt.Errorf("proto: NodeEvent: wiretype end group for non-group")
}
if fieldNum <= 0 {
return fmt.Errorf("proto: NodeEvent: illegal tag %d (wire type %d)", fieldNum, wire)
}
switch fieldNum {
case 1:
if wireType != 0 {
return fmt.Errorf("proto: wrong wireType = %d for field Type", wireType)
}
m.Type = 0
for shift := uint(0); ; shift += 7 {
if shift >= 64 {
return ErrIntOverflowNetworkdb
}
if iNdEx >= l {
return io.ErrUnexpectedEOF
}
b := data[iNdEx]
iNdEx++
m.Type |= (NodeEvent_Type(b) & 0x7F) << shift
if b < 0x80 {
break
}
}
case 2:
if wireType != 0 {
return fmt.Errorf("proto: wrong wireType = %d for field LTime", wireType)
}
m.LTime = 0
for shift := uint(0); ; shift += 7 {
if shift >= 64 {
return ErrIntOverflowNetworkdb
}
if iNdEx >= l {
return io.ErrUnexpectedEOF
}
b := data[iNdEx]
iNdEx++
m.LTime |= (github_com_hashicorp_serf_serf.LamportTime(b) & 0x7F) << shift
if b < 0x80 {
break
}
}
case 3:
if wireType != 2 {
return fmt.Errorf("proto: wrong wireType = %d for field NodeName", wireType)
}
var stringLen uint64
for shift := uint(0); ; shift += 7 {
if shift >= 64 {
return ErrIntOverflowNetworkdb
}
if iNdEx >= l {
return io.ErrUnexpectedEOF
}
b := data[iNdEx]
iNdEx++
stringLen |= (uint64(b) & 0x7F) << shift
if b < 0x80 {
break
}
}
intStringLen := int(stringLen)
if intStringLen < 0 {
return ErrInvalidLengthNetworkdb
}
postIndex := iNdEx + intStringLen
if postIndex > l {
return io.ErrUnexpectedEOF
}
m.NodeName = string(data[iNdEx:postIndex])
iNdEx = postIndex
default:
iNdEx = preIndex
skippy, err := skipNetworkdb(data[iNdEx:])
if err != nil {
return err
}
if skippy < 0 {
return ErrInvalidLengthNetworkdb
}
if (iNdEx + skippy) > l {
return io.ErrUnexpectedEOF
}
iNdEx += skippy
}
}
if iNdEx > l {
return io.ErrUnexpectedEOF
}
return nil
}
func (m *NetworkEvent) Unmarshal(data []byte) error {
l := len(data)
iNdEx := 0
@ -1509,6 +1763,35 @@ func (m *NetworkPushPull) Unmarshal(data []byte) error {
return err
}
iNdEx = postIndex
case 3:
if wireType != 2 {
return fmt.Errorf("proto: wrong wireType = %d for field NodeName", wireType)
}
var stringLen uint64
for shift := uint(0); ; shift += 7 {
if shift >= 64 {
return ErrIntOverflowNetworkdb
}
if iNdEx >= l {
return io.ErrUnexpectedEOF
}
b := data[iNdEx]
iNdEx++
stringLen |= (uint64(b) & 0x7F) << shift
if b < 0x80 {
break
}
}
intStringLen := int(stringLen)
if intStringLen < 0 {
return ErrInvalidLengthNetworkdb
}
postIndex := iNdEx + intStringLen
if postIndex > l {
return io.ErrUnexpectedEOF
}
m.NodeName = string(data[iNdEx:postIndex])
iNdEx = postIndex
default:
iNdEx = preIndex
skippy, err := skipNetworkdb(data[iNdEx:])
@ -2211,56 +2494,61 @@ var (
)
var fileDescriptorNetworkdb = []byte{
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}

27
libnetwork/networkdb/networkdb.proto
View file

@ -41,6 +41,10 @@ enum MessageType {
// which is a pack of many message of above types, packed into
// a single compound message.
COMPOUND = 5 [(gogoproto.enumvalue_customname) = "MessageTypeCompound"];
// NodeEvent message type is used to communicare node
// join/leave events in the cluster
NODE_EVENT = 6 [(gogoproto.enumvalue_customname) = "MessageTypeNodeEvent"];
}
// GossipMessage is a basic message header used by all messages types.
@ -49,6 +53,29 @@ message GossipMessage {
bytes data = 2; // Payload of the message of any type defined here.
}
// NodeEvent message payload definition.
message NodeEvent {
enum Type {
option (gogoproto.goproto_enum_prefix) = false;
option (gogoproto.enum_customname) = "Type";
INVALID = 0 [(gogoproto.enumvalue_customname) = "NodeEventTypeInvalid"];
// Join event is generated when this node joins the cluster.
JOIN = 1 [(gogoproto.enumvalue_customname) = "NodeEventTypeJoin"];;
// Leave event is generated when this node leaves the cluster.
LEAVE = 2 [(gogoproto.enumvalue_customname) = "NodeEventTypeLeave"];;
}
Type type = 1;
// Lamport time using a network lamport clock indicating the
// time this event was generated on the node where it was
// generated.
uint64 l_time = 2 [(gogoproto.customtype) = "github.com/hashicorp/serf/serf.LamportTime", (gogoproto.nullable) = false];
// Source node name.
string node_name = 3;
}
// NetworkEvent message payload definition.
message NetworkEvent {
enum Type {