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multinode.go
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multinode.go
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package cluster
import (
"context"
"path"
"sync"
"time"
"github.com/vx-labs/wasp/cluster/clusterpb"
"github.com/vx-labs/wasp/cluster/membership"
"github.com/vx-labs/wasp/cluster/raft"
"go.uber.org/zap"
"google.golang.org/grpc"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
)
type multinode struct {
mtx sync.RWMutex
rafts map[string]*raft.RaftNode
gossip *membership.Gossip
logger *zap.Logger
config NodeConfig
dialer func(address string, opts ...grpc.DialOption) (*grpc.ClientConn, error)
}
func (n *multinode) Shutdown() error {
return n.gossip.Shutdown()
}
func NewMultiNode(config NodeConfig, dialer func(address string, opts ...grpc.DialOption) (*grpc.ClientConn, error), server *grpc.Server, logger *zap.Logger) MultiNode {
gossipNetworkConfig := config.GossipConfig.Network
joinList := config.GossipConfig.JoinList
gossip := membership.New(config.ID,
config.ServiceName,
gossipNetworkConfig.ListeningPort, gossipNetworkConfig.AdvertizedHost, gossipNetworkConfig.AdvertizedPort,
config.RaftConfig.Network.AdvertizedPort,
dialer, logger)
rpcAddress := config.RaftConfig.Network.AdvertizedAddress()
gossip.UpdateMetadata(membership.EncodeMD(config.ID,
config.ServiceName,
rpcAddress,
))
if len(joinList) > 0 {
joinStarted := time.Now()
retryTicker := time.NewTicker(3 * time.Second)
for {
err := gossip.Join(joinList)
if err != nil {
logger.Warn("failed to join gossip mesh", zap.Error(err))
} else {
break
}
<-retryTicker.C
}
retryTicker.Stop()
logger.Debug("joined gossip mesh",
zap.Duration("gossip_join_duration", time.Since(joinStarted)), zap.Strings("gossip_node_list", joinList))
}
clusterpb.RegisterNodeServer(server, newNodeRPCServer())
m := &multinode{
config: config,
rafts: map[string]*raft.RaftNode{},
gossip: gossip,
logger: logger,
dialer: dialer,
}
clusterpb.RegisterMultiRaftServer(server, m)
return m
}
func (n *multinode) Node(cluster string, raftConfig RaftConfig) Node {
n.mtx.Lock()
defer n.mtx.Unlock()
raftNode := raft.NewNode(raft.Config{
NodeID: n.config.ID,
ClusterID: cluster,
DataDir: path.Join(n.config.DataDirectory, "nodes", cluster),
GetSnapshot: raftConfig.GetStateSnapshot,
CommitApplier: raftConfig.CommitApplier,
SnapshotApplier: raftConfig.SnapshotApplier,
}, n.gossip, n.logger.With(zap.String("cluster_node_name", cluster)))
n.rafts[cluster] = raftNode
clusterList := make([]string, len(n.rafts))
idx := 0
for cluster := range n.rafts {
clusterList[idx] = cluster
idx++
}
n.gossip.UpdateMetadata(membership.EncodeMD(n.config.ID,
n.config.ServiceName,
n.config.RaftConfig.Network.AdvertizedAddress(),
))
config := n.config
config.RaftConfig = raftConfig
return &node{
raft: n.rafts[cluster],
cluster: cluster,
config: config,
dialer: n.dialer,
gossip: n.gossip,
logger: n.logger,
ready: make(chan struct{}),
}
}
func (n *multinode) RemoveMember(ctx context.Context, in *clusterpb.RemoveMultiRaftMemberRequest) (*clusterpb.RemoveMultiRaftMemberResponse, error) {
n.mtx.RLock()
defer n.mtx.RUnlock()
instance, ok := n.rafts[in.ClusterID]
if !ok {
return nil, status.Error(codes.NotFound, "cluster not found")
}
_, err := instance.RemoveMember(ctx, &clusterpb.RemoveMemberRequest{ID: in.ID})
return &clusterpb.RemoveMultiRaftMemberResponse{}, err
}
func (n *multinode) ProcessMessage(ctx context.Context, in *clusterpb.ProcessMessageRequest) (*clusterpb.Payload, error) {
n.mtx.RLock()
defer n.mtx.RUnlock()
instance, ok := n.rafts[in.ClusterID]
if !ok {
return nil, status.Error(codes.NotFound, "cluster not found")
}
return instance.ProcessMessage(ctx, in.Message)
}
func (n *multinode) GetMembers(ctx context.Context, in *clusterpb.GetMembersRequest) (*clusterpb.GetMembersResponse, error) {
n.mtx.RLock()
defer n.mtx.RUnlock()
instance, ok := n.rafts[in.ClusterID]
if !ok {
return nil, status.Error(codes.NotFound, "cluster not found")
}
return instance.GetMembers(ctx, in)
}
func (n *multinode) GetStatus(ctx context.Context, in *clusterpb.GetStatusRequest) (*clusterpb.GetStatusResponse, error) {
n.mtx.RLock()
defer n.mtx.RUnlock()
instance, ok := n.rafts[in.ClusterID]
if !ok {
return nil, status.Error(codes.NotFound, "cluster not found")
}
return instance.GetStatus(ctx, in)
}
func (n *multinode) JoinCluster(ctx context.Context, in *clusterpb.JoinClusterRequest) (*clusterpb.JoinClusterResponse, error) {
n.mtx.RLock()
defer n.mtx.RUnlock()
instance, ok := n.rafts[in.ClusterID]
if !ok {
return nil, status.Error(codes.NotFound, "cluster not found")
}
return instance.JoinCluster(ctx, in.Context)
}
func (n *multinode) GetTopology(ctx context.Context, in *clusterpb.GetTopologyRequest) (*clusterpb.GetTopologyResponse, error) {
n.mtx.RLock()
defer n.mtx.RUnlock()
instance, ok := n.rafts[in.ClusterID]
if !ok {
return nil, status.Error(codes.NotFound, "cluster not found")
}
return instance.GetTopology(ctx, in)
}
func (n *multinode) PromoteMember(ctx context.Context, in *clusterpb.PromoteMemberRequest) (*clusterpb.PromoteMemberResponse, error) {
n.mtx.RLock()
defer n.mtx.RUnlock()
instance, ok := n.rafts[in.ClusterID]
if !ok {
return nil, status.Error(codes.NotFound, "cluster not found")
}
return instance.PromoteMember(ctx, in.Context)
}