// start starts the node by registering the storage instance for the
// RPC service "Node" and initializing stores for each specified
// engine. Launches periodic store gossiping in a goroutine.
func (n *Node) start(rpcServer *rpc.Server, engines []engine.Engine,
attrs proto.Attributes, stopper *util.Stopper) error {
n.initDescriptor(rpcServer.Addr(), attrs)
if err := rpcServer.RegisterName("Node", (*nodeServer)(n)); err != nil {
log.Fatalf("unable to register node service with RPC server: %s", err)
}
// Start status monitor.
n.status.StartMonitorFeed(n.ctx.EventFeed)
stopper.AddCloser(n.ctx.EventFeed)
// Initialize stores, including bootstrapping new ones.
if err := n.initStores(engines, stopper); err != nil {
return err
}
// Pass NodeID to status monitor - this value is initialized in initStores,
// but the StatusMonitor must be active before initStores.
n.status.SetNodeID(n.Descriptor.NodeID)
// Initialize publisher for Node Events.
n.feed = status.NewNodeEventFeed(n.Descriptor.NodeID, n.ctx.EventFeed)
n.startedAt = n.ctx.Clock.Now().WallTime
n.startStoresScanner(stopper)
n.startPublishStatuses(stopper)
n.startGossip(stopper)
log.Infoc(n.context(), "Started node with %v engine(s) and attributes %v", engines, attrs.Attrs)
return nil
}
// start starts the node by registering the storage instance for the
// RPC service "Node" and initializing stores for each specified
// engine. Launches periodic store gossiping in a goroutine.
func (n *Node) start(rpcServer *rpc.Server, engines []engine.Engine,
attrs proto.Attributes, stopper *stop.Stopper) error {
n.initDescriptor(rpcServer.Addr(), attrs)
if err := rpcServer.RegisterName("Node", (*nodeServer)(n)); err != nil {
log.Fatalf("unable to register node service with RPC server: %s", err)
}
// Start status monitor.
n.status.StartMonitorFeed(n.ctx.EventFeed)
stopper.AddCloser(n.ctx.EventFeed)
// Initialize stores, including bootstrapping new ones.
if err := n.initStores(engines, stopper); err != nil {
return err
}
n.startedAt = n.ctx.Clock.Now().WallTime
// Initialize publisher for Node Events. This requires the NodeID, which is
// initialized by initStores(); because of this, some Store initialization
// events will precede the StartNodeEvent on the feed.
n.feed = status.NewNodeEventFeed(n.Descriptor.NodeID, n.ctx.EventFeed)
n.feed.StartNode(n.Descriptor, n.startedAt)
n.startPublishStatuses(stopper)
n.startGossip(stopper)
log.Infoc(n.context(), "Started node with %v engine(s) and attributes %v", engines, attrs.Attrs)
return nil
}
// NewNode returns a new instance of Node, interpreting command line
// flags to initialize the appropriate Store or set of
// Stores. Registers the storage instance for the RPC service "Node".
func NewNode(rpcServer *rpc.Server, kvDB kv.DB, gossip *gossip.Gossip) *Node {
n := &Node{
gossip: gossip,
kvDB: kvDB,
storeMap: make(map[int32]*storage.Store),
closer: make(chan struct{}, 1),
}
n.initAttributes(rpcServer.Addr())
rpcServer.RegisterName("Node", n)
return n
}
// start starts the node by initializing network/physical topology
// attributes gleaned from the environment and initializing stores
// for each specified engine. Launches periodic store gossipping
// in a goroutine.
func (n *Node) start(rpcServer *rpc.Server, engines []storage.Engine,
attrs storage.Attributes) error {
n.initDescriptor(rpcServer.Addr(), attrs)
rpcServer.RegisterName("Node", n)
if err := n.initStoreMap(engines); err != nil {
return err
}
go n.startGossip()
return nil
}
// start starts the node by initializing network/physical topology
// attributes gleaned from the environment and initializing stores
// for each specified engine. Launches periodic store gossipping
// in a goroutine.
func (n *Node) start(rpcServer *rpc.Server, clock *hlc.HLClock,
engines []engine.Engine, attrs engine.Attributes) error {
n.initDescriptor(rpcServer.Addr(), attrs)
rpcServer.RegisterName("Node", n)
if err := n.initStores(clock, engines); err != nil {
return err
}
go n.startGossip()
return nil
}
// newServer creates and returns a server struct.
func newServer(rpcServer *rpc.Server, interval time.Duration) *server {
s := &server{
interval: interval,
is: newInfoStore(rpcServer.Addr()),
incoming: newAddrSet(MaxPeers),
clientAddrMap: make(map[string]net.Addr),
}
rpcServer.RegisterName("Gossip", s)
rpcServer.AddCloseCallback(s.onClose)
s.ready = sync.NewCond(&s.mu)
return s
}
// start starts the node by initializing network/physical topology
// attributes gleaned from the environment and initializing stores
// for each specified engine. Launches periodic store gossipping
// in a goroutine.
func (n *Node) start(rpcServer *rpc.Server, clock *hlc.Clock,
engines []engine.Engine, attrs proto.Attributes) error {
n.initDescriptor(rpcServer.Addr(), attrs)
rpcServer.RegisterName("Node", n)
// Initialize stores, including bootstrapping new ones.
if err := n.initStores(clock, engines); err != nil {
return err
}
go n.startGossip()
return nil
}
// start starts the node by initializing network/physical topology
// attributes gleaned from the environment and initializing stores
// for each specified engine. Launches periodic store gossiping
// in a goroutine.
func (n *Node) start(rpcServer *rpc.Server, clock *hlc.Clock,
engines []engine.Engine, attrs proto.Attributes) error {
n.initDescriptor(rpcServer.Addr(), attrs)
if err := rpcServer.RegisterName("Node", n); err != nil {
log.Fatalf("unable to register node service with RPC server: %s", err)
}
// Initialize stores, including bootstrapping new ones.
if err := n.initStores(clock, engines); err != nil {
return err
}
go n.startGossip()
log.Infof("Started node with %v engine(s) and attributes %v", engines, attrs)
return nil
}
// start initializes the infostore with the rpc server address and
// then begins processing connecting clients in an infinite select
// loop via goroutine. Periodically, clients connected and awaiting
// the next round of gossip are awoken via the conditional variable.
func (s *server) start(rpcServer *rpc.Server) {
s.is.NodeAddr = rpcServer.Addr()
rpcServer.RegisterName("Gossip", s)
rpcServer.AddCloseCallback(s.onClose)
go func() {
// Periodically wakeup blocked client gossip requests.
gossipTimeout := time.Tick(s.jitteredGossipInterval())
for {
select {
case <-gossipTimeout:
// Wakeup all blocked gossip requests.
s.ready.Broadcast()
}
}
}()
}
// start initializes the infostore with the rpc server address and
// then begins processing connecting clients in an infinite select
// loop via goroutine. Periodically, clients connected and awaiting
// the next round of gossip are awoken via the conditional variable.
func (s *server) start(rpcServer *rpc.Server) {
s.is.NodeAddr = rpcServer.Addr()
if err := rpcServer.RegisterName("Gossip", s); err != nil {
log.Fatalf("unable to register gossip service with RPC server: %s", err)
}
rpcServer.AddCloseCallback(s.onClose)
go func() {
// Periodically wakeup blocked client gossip requests.
gossipTimeout := time.Tick(s.jitteredGossipInterval())
for {
select {
case <-gossipTimeout:
// Wakeup all blocked gossip requests.
s.ready.Broadcast()
}
}
}()
}
// start initializes the infostore with the rpc server address and
// then begins processing connecting clients in an infinite select
// loop via goroutine. Periodically, clients connected and awaiting
// the next round of gossip are awoken via the conditional variable.
func (s *server) start(rpcServer *rpc.Server, stopper *stop.Stopper) {
s.is.NodeAddr = rpcServer.Addr()
if err := rpcServer.RegisterName("Gossip", s); err != nil {
log.Fatalf("unable to register gossip service with RPC server: %s", err)
}
rpcServer.AddCloseCallback(s.onClose)
stopper.RunWorker(func() {
// Periodically wakeup blocked client gossip requests.
for {
select {
case <-time.After(s.jitteredGossipInterval()):
// Wakeup all blocked gossip requests.
s.ready.Broadcast()
case <-stopper.ShouldStop():
s.stop()
return
}
}
})
}
// RegisterRPC registers the RPC endpoints.
func (s *DBServer) RegisterRPC(rpcServer *rpc.Server) error {
return rpcServer.RegisterName("Server", (*rpcDBServer)(s))
}
