LBRYCommunity/reflector.go
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fixed a few channel lockups, fixed announced port in dht, successfully announced and served a blob

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This commit is contained in:
Alex Grintsvayg 2018-06-21 11:26:48 -04:00
parent 4ab3aea7b6
commit e480fa146f
10 changed files with 115 additions and 77 deletions
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13
cluster/cluster.go
View file

@ -15,8 +15,7 @@ import (
)
const (
// DefaultClusterPort is the default port used when starting up a Cluster.
DefaultClusterPort = 17946
DefaultPort = 17946
MembershipChangeBufferWindow = 1 * time.Second
)
@ -103,11 +102,11 @@ func (c *Cluster) listen() {
case event := <-c.eventCh:
switch event.EventType() {
case serf.EventMemberJoin, serf.EventMemberFailed, serf.EventMemberLeave:
memberEvent := event.(serf.MemberEvent)
if event.EventType() == serf.EventMemberJoin && len(memberEvent.Members) == 1 && memberEvent.Members[0].Name == c.name {
// ignore event from my own joining of the cluster
continue
}
// // ignore event from my own joining of the cluster
//memberEvent := event.(serf.MemberEvent)
//if event.EventType() == serf.EventMemberJoin && len(memberEvent.Members) == 1 && memberEvent.Members[0].Name == c.name {
// continue
//}
if timerCh == nil {
timer.Reset(MembershipChangeBufferWindow)

2
cmd/peer.go
View file

@ -32,7 +32,7 @@ func peerCmd(cmd *cobra.Command, args []string) {
combo := store.NewDBBackedS3Store(s3, db)
peerServer := peer.NewServer(combo)
err = peerServer.Start("localhost:" + strconv.Itoa(peer.DefaultPort))
err = peerServer.Start(":" + strconv.Itoa(peer.DefaultPort))
if err != nil {
log.Fatal(err)
}

2
cmd/reflector.go
View file

@ -31,7 +31,7 @@ func reflectorCmd(cmd *cobra.Command, args []string) {
s3 := store.NewS3BlobStore(globalConfig.AwsID, globalConfig.AwsSecret, globalConfig.BucketRegion, globalConfig.BucketName)
combo := store.NewDBBackedS3Store(s3, db)
reflectorServer := reflector.NewServer(combo)
err = reflectorServer.Start("localhost:" + strconv.Itoa(reflector.DefaultPort))
err = reflectorServer.Start(":" + strconv.Itoa(reflector.DefaultPort))
if err != nil {
log.Fatal(err)
}

56
cmd/start.go
View file

@ -4,9 +4,13 @@ import (
"os"
"os/signal"
"strconv"
"strings"
"syscall"
"github.com/lbryio/reflector.go/cluster"
"github.com/lbryio/reflector.go/db"
"github.com/lbryio/reflector.go/dht"
"github.com/lbryio/reflector.go/dht/bits"
"github.com/lbryio/reflector.go/peer"
"github.com/lbryio/reflector.go/prism"
"github.com/lbryio/reflector.go/reflector"
@ -16,28 +20,33 @@ import (
"github.com/spf13/cobra"
)
const (
startNewCluster = "new"
)
var (
startClusterPort int
startPeerPort int
startReflectorPort int
startDhtPort int
startDhtSeedPort int
startClusterPort int
startClusterSeedPort int
startDhtSeeds []string
startHashRange string
)
func init() {
var cmd = &cobra.Command{
Use: "start [cluster-address]",
Short: "Runs prism application with cluster, dht, peer server, and reflector server.",
Use: `start [cluster-address|"new"]`,
Short: "Runs full prism application with cluster, dht, peer server, and reflector server.",
Run: startCmd,
Args: cobra.RangeArgs(0, 1),
Args: cobra.ExactArgs(1),
}
cmd.PersistentFlags().IntVar(&startDhtPort, "dht-port", 4570, "Port to start DHT on")
cmd.PersistentFlags().IntVar(&startDhtSeedPort, "dht-seed-port", 4567, "Port to connect to DHT bootstrap node on")
cmd.PersistentFlags().IntVar(&startClusterPort, "cluster-port", 5678, "Port to start DHT on")
cmd.PersistentFlags().IntVar(&startClusterSeedPort, "cluster-seed-port", 0, "Port to start DHT on")
cmd.PersistentFlags().IntVar(&startClusterPort, "cluster-port", cluster.DefaultPort, "Port that cluster listens on")
cmd.PersistentFlags().IntVar(&startPeerPort, "peer-port", peer.DefaultPort, "Port to start peer protocol on")
cmd.PersistentFlags().IntVar(&startReflectorPort, "reflector-port", reflector.DefaultPort, "Port to start reflector protocol on")
cmd.PersistentFlags().IntVar(&startDhtPort, "dht-port", dht.DefaultPort, "Port that dht will listen on")
cmd.PersistentFlags().StringSliceVar(&startDhtSeeds, "dht-seeds", []string{}, "Comma-separated list of dht seed nodes (addr:port,addr:port,...)")
cmd.PersistentFlags().StringVar(&startHashRange, "hash-range", "", "Limit on range of hashes to announce (start-end)")
rootCmd.AddCommand(cmd)
}
@ -49,25 +58,32 @@ func startCmd(cmd *cobra.Command, args []string) {
s3 := store.NewS3BlobStore(globalConfig.AwsID, globalConfig.AwsSecret, globalConfig.BucketRegion, globalConfig.BucketName)
comboStore := store.NewDBBackedS3Store(s3, db)
conf := prism.DefaultConf()
// TODO: args we need:
// clusterAddr - to connect to cluster (or start new cluster if empty)
// minNodes - minimum number of nodes before announcing starts. otherwise first node will try to announce all the blobs in the db
// or maybe we should do maxHashesPerNode?
// in either case, this should not kill the cluster, but should only limit announces (and notify when some hashes are being left unannounced)
//clusterAddr := ""
//if len(args) > 0 {
// clusterAddr = args[0]
//}
if args[0] != startNewCluster {
conf.ClusterSeedAddr = args[0]
}
conf := prism.DefaultConf()
conf.DB = db
conf.Blobs = comboStore
conf.DhtAddress = "127.0.0.1:" + strconv.Itoa(startDhtPort)
conf.DhtSeedNodes = []string{"127.0.0.1:" + strconv.Itoa(startDhtSeedPort)}
conf.DhtAddress = "0.0.0.0:" + strconv.Itoa(startDhtPort)
conf.DhtSeedNodes = startDhtSeeds
conf.ClusterPort = startClusterPort
if startClusterSeedPort > 0 {
conf.ClusterSeedAddr = "127.0.0.1:" + strconv.Itoa(startClusterSeedPort)
conf.PeerPort = startPeerPort
conf.ReflectorPort = startReflectorPort
if startHashRange != "" {
hashRange := strings.Split(startHashRange, "-")
if len(hashRange) != 2 {
log.Fatal("invalid hash range")
}
r := bits.Range{Start: bits.FromShortHexP(hashRange[0]), End: bits.FromShortHexP(hashRange[1])}
conf.HashRange = &r
}
p := prism.New(conf)

15
dht/dht.go
View file

@ -3,16 +3,19 @@ package dht
import (
"fmt"
"net"
"strconv"
"strings"
"sync"
"time"
"github.com/lbryio/reflector.go/dht/bits"
peerproto "github.com/lbryio/reflector.go/peer"
"github.com/lbryio/lbry.go/errors"
"github.com/lbryio/lbry.go/stopOnce"
"github.com/lbryio/reflector.go/dht/bits"
"github.com/spf13/cast"
log "github.com/sirupsen/logrus"
"github.com/spf13/cast"
)
func init() {
@ -22,6 +25,7 @@ func init() {
const (
Network = "udp4"
DefaultPort = 4444
// TODO: all these constants should be defaults, and should be used to set values in the standard Config. then the code should use values in the config
// TODO: alternatively, have a global Config for constants. at least that way tests can modify the values
@ -57,17 +61,20 @@ type Config struct {
NodeID string
// print the state of the dht every X time
PrintState time.Duration
// the port that clients can use to download blobs using the LBRY peer protocol
PeerProtocolPort int
}
// NewStandardConfig returns a Config pointer with default values.
func NewStandardConfig() *Config {
return &Config{
Address: "0.0.0.0:4444",
Address: "0.0.0.0:" + strconv.Itoa(DefaultPort),
SeedNodes: []string{
"lbrynet1.lbry.io:4444",
"lbrynet2.lbry.io:4444",
"lbrynet3.lbry.io:4444",
},
PeerProtocolPort: peerproto.DefaultPort,
}
}
@ -330,7 +337,7 @@ func (dht *DHT) storeOnNode(hash bits.Bitmap, c Contact) {
Value: storeArgsValue{
Token: res.Token,
LbryID: dht.contact.ID,
Port: dht.contact.Port,
Port: dht.conf.PeerProtocolPort,
},
},
})

6
dht/node.go
View file

@ -299,7 +299,11 @@ func (n *Node) handleRequest(addr *net.UDPAddr, request Request) {
func (n *Node) handleResponse(addr *net.UDPAddr, response Response) {
tx := n.txFind(response.ID, Contact{ID: response.NodeID, IP: addr.IP, Port: addr.Port})
if tx != nil {
tx.res <- response
select {
case tx.res <- response:
default:
log.Errorf("[%s] query %s: response received but tx has no listener", n.id.HexShort(), response.ID.HexShort())
}
}
n.rt.Update(Contact{ID: response.NodeID, IP: addr.IP, Port: addr.Port})

26
dht/node_finder.go
View file

@ -69,13 +69,13 @@ func (cf *contactFinder) Stop() {
func (cf *contactFinder) Find() ([]Contact, bool, error) {
if cf.findValue {
log.Debugf("[%s] starting an iterative Find for the value %s", cf.node.id.HexShort(), cf.target.HexShort())
log.Debugf("[%s] find %s: starting iterativeFindValue", cf.node.id.HexShort(), cf.target.HexShort())
} else {
log.Debugf("[%s] starting an iterative Find for contacts near %s", cf.node.id.HexShort(), cf.target.HexShort())
log.Debugf("[%s] find %s: starting iterativeFindNode", cf.node.id.HexShort(), cf.target.HexShort())
}
cf.appendNewToShortlist(cf.node.rt.GetClosest(cf.target, alpha))
if len(cf.shortlist) == 0 {
return nil, false, errors.Err("no contacts in routing table")
return nil, false, errors.Err("[%s] find %s: no contacts in routing table", cf.node.id.HexShort(), cf.target.HexShort())
}
for i := 0; i < alpha; i++ {
@ -108,14 +108,16 @@ func (cf *contactFinder) Find() ([]Contact, bool, error) {
}
func (cf *contactFinder) iterationWorker(num int) {
log.Debugf("[%s] starting worker %d", cf.node.id.HexShort(), num)
defer func() { log.Debugf("[%s] stopping worker %d", cf.node.id.HexShort(), num) }()
log.Debugf("[%s] find %s: starting worker %d", cf.node.id.HexShort(), cf.target.HexShort(), num)
defer func() {
log.Debugf("[%s] find %s: stopping worker %d", cf.node.id.HexShort(), cf.target.HexShort(), num)
}()
for {
maybeContact := cf.popFromShortlist()
if maybeContact == nil {
// TODO: block if there are pending requests out from other workers. there may be more shortlist values coming
log.Debugf("[%s] worker %d: no contacts in shortlist, waiting...", cf.node.id.HexShort(), num)
//log.Debugf("[%s] worker %d: no contacts in shortlist, waiting...", cf.node.id.HexShort(), num)
time.Sleep(100 * time.Millisecond)
} else {
contact := *maybeContact
@ -131,7 +133,7 @@ func (cf *contactFinder) iterationWorker(num int) {
req.Method = findNodeMethod
}
log.Debugf("[%s] worker %d: contacting %s", cf.node.id.HexShort(), num, contact.ID.HexShort())
log.Debugf("[%s] find %s: worker %d: contacting %s", cf.node.id.HexShort(), cf.target.HexShort(), num, contact.ID.HexShort())
cf.incrementOutstanding()
@ -140,23 +142,23 @@ func (cf *contactFinder) iterationWorker(num int) {
select {
case res = <-resCh:
case <-cf.stop.Ch():
log.Debugf("[%s] worker %d: canceled", cf.node.id.HexShort(), num)
log.Debugf("[%s] find %s: worker %d: canceled", cf.node.id.HexShort(), cf.target.HexShort(), num)
cancel()
return
}
if res == nil {
// nothing to do, response timed out
log.Debugf("[%s] worker %d: search canceled or timed out waiting for %s", cf.node.id.HexShort(), num, contact.ID.HexShort())
log.Debugf("[%s] find %s: worker %d: search canceled or timed out waiting for %s", cf.node.id.HexShort(), cf.target.HexShort(), num, contact.ID.HexShort())
} else if cf.findValue && res.FindValueKey != "" {
log.Debugf("[%s] worker %d: got value", cf.node.id.HexShort(), num)
log.Debugf("[%s] find %s: worker %d: got value", cf.node.id.HexShort(), cf.target.HexShort(), num)
cf.findValueMutex.Lock()
cf.findValueResult = res.Contacts
cf.findValueMutex.Unlock()
cf.stop.Stop()
return
} else {
log.Debugf("[%s] worker %d: got contacts", cf.node.id.HexShort(), num)
log.Debugf("[%s] find %s: worker %d: got contacts", cf.node.id.HexShort(), cf.target.HexShort(), num)
cf.insertIntoActiveList(contact)
cf.appendNewToShortlist(res.Contacts)
}
@ -165,7 +167,7 @@ func (cf *contactFinder) iterationWorker(num int) {
}
if cf.isSearchFinished() {
log.Debugf("[%s] worker %d: search is finished", cf.node.id.HexShort(), num)
log.Debugf("[%s] find %s: worker %d: search is finished", cf.node.id.HexShort(), cf.target.HexShort(), num)
cf.stop.Stop()
return
}

2
peer/server.go
View file

@ -51,7 +51,7 @@ func (s *Server) Shutdown() {
// Start starts the server listener to handle connections.
func (s *Server) Start(address string) error {
log.Println("peer listening on " + address)
l, err := net.Listen("tcp", address)
l, err := net.Listen("tcp4", address)
if err != nil {
return err
}

46
prism/prism.go
View file

@ -29,6 +29,9 @@ type Config struct {
ClusterPort int
ClusterSeedAddr string
// limit the range of hashes to announce. useful for testing
HashRange *bits.Range
DB *db.SQL
Blobs store.BlobStore
}
@ -36,7 +39,7 @@ type Config struct {
// DefaultConf returns a default config
func DefaultConf() *Config {
return &Config{
ClusterPort: cluster.DefaultClusterPort,
ClusterPort: cluster.DefaultPort,
}
}
@ -61,7 +64,10 @@ func New(conf *Config) *Prism {
dhtConf := dht.NewStandardConfig()
dhtConf.Address = conf.DhtAddress
dhtConf.PeerProtocolPort = conf.PeerPort
if len(conf.DhtSeedNodes) > 0 {
dhtConf.SeedNodes = conf.DhtSeedNodes
}
d := dht.New(dhtConf)
c := cluster.New(conf.ClusterPort, conf.ClusterSeedAddr)
@ -91,6 +97,8 @@ func New(conf *Config) *Prism {
// Start starts the components of the application.
func (p *Prism) Start() error {
var err error
if p.conf.DB == nil {
return errors.Err("db required in conf")
}
@ -99,7 +107,17 @@ func (p *Prism) Start() error {
return errors.Err("blobs required in conf")
}
err := p.dht.Start()
err = p.peer.Start(":" + strconv.Itoa(p.conf.PeerPort))
if err != nil {
return err
}
err = p.reflector.Start(":" + strconv.Itoa(p.conf.ReflectorPort))
if err != nil {
return err
}
err = p.dht.Start()
if err != nil {
return err
}
@ -109,28 +127,16 @@ func (p *Prism) Start() error {
return err
}
// TODO: should not be localhost forever. should prolly be 0.0.0.0, or configurable
err = p.peer.Start("localhost:" + strconv.Itoa(p.conf.PeerPort))
if err != nil {
return err
}
// TODO: should not be localhost forever. should prolly be 0.0.0.0, or configurable
err = p.reflector.Start("localhost:" + strconv.Itoa(p.conf.ReflectorPort))
if err != nil {
return err
}
return nil
}
// Shutdown gracefully shuts down the different prism components before exiting.
func (p *Prism) Shutdown() {
p.stop.StopAndWait()
p.reflector.Shutdown()
p.peer.Shutdown()
p.cluster.Shutdown()
p.dht.Shutdown()
p.reflector.Shutdown()
p.peer.Shutdown()
}
// AnnounceRange announces the `n`th interval of hashes, out of a total of `total` intervals
@ -143,15 +149,19 @@ func (p *Prism) AnnounceRange(n, total int) {
return
}
var r bits.Range
if p.conf.HashRange != nil {
r = *p.conf.HashRange
} else {
//r := bits.MaxRange().IntervalP(n, total)
// TODO: this is temporary. it lets me test with a small number of hashes. use the full range in production
min, max, err := p.db.GetHashRange()
if err != nil {
log.Errorf("%s: error getting hash range: %s", p.dht.ID().HexShort(), err.Error())
return
}
r := (bits.Range{Start: bits.FromHexP(min), End: bits.FromHexP(max)}).IntervalP(n, total)
r = (bits.Range{Start: bits.FromHexP(min), End: bits.FromHexP(max)}).IntervalP(n, total)
}
log.Infof("%s: hash range is now %s to %s", p.dht.ID().HexShort(), r.Start, r.End)

2
reflector/server.go
View file

@ -41,7 +41,7 @@ func (s *Server) Shutdown() {
func (s *Server) Start(address string) error {
//ToDo - We should make this DRY as it is the same code in both servers.
log.Println("reflector listening on " + address)
l, err := net.Listen("tcp", address)
l, err := net.Listen("tcp4", address)
if err != nil {
return err
}