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main.go
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main.go
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package main
import (
"flag"
"fmt"
"io/ioutil"
"net"
"net/http"
"strings"
"time"
"google.golang.org/grpc"
"google.golang.org/grpc/grpclog"
"github.com/hexablock/fidias"
"github.com/hexablock/fidias/gateways"
"github.com/hexablock/go-chord"
"github.com/hexablock/hexalog"
"github.com/hexablock/hexaring"
"github.com/hexablock/log"
)
var (
version string
buildtime string
)
func initHexaring(r *hexaring.Ring, peerStore hexaring.PeerStore) (err error) {
switch {
case *joinAddr != "":
addPeersToStore(peerStore, *joinAddr)
err = r.Join()
case *retryJoinAddr != "":
addPeersToStore(peerStore, *retryJoinAddr)
err = r.RetryJoin()
default:
err = r.Create()
}
return
}
func init() {
// Silence grpc
grpclog.SetLogger(log.New(ioutil.Discard, "", 0))
}
func main() {
flag.Parse()
if *showVersion {
fmt.Println(version, buildtime)
return
}
checkAddrs()
// Configuration
conf := configure()
printStartBanner(conf)
// Blox net
bloxLn, err := net.Listen("tcp", *bloxAddr)
if err != nil {
log.Fatalf("[ERROR] Failed start listening on %s: %v", *bloxAddr, err)
}
// GRPC Server
ln, err := net.Listen("tcp", *bindAddr)
if err != nil {
log.Fatalf("[ERROR] Failed start listening on %s: %v", *bindAddr, err)
}
gserver := grpc.NewServer()
timeout := 3 * time.Second
maxIdle := 3 * time.Minute
reapInt := 30 * time.Second
// Init hexaring
peers := hexaring.NewInMemPeerStore()
chordTrans := chord.NewGRPCTransport(timeout, maxIdle)
ring := hexaring.New(conf.Ring, peers, chordTrans)
ring.RegisterServer(gserver)
// Init log store with fsm
index, entries, stable, fsm, err := setupStores(conf, *dataDir)
if err != nil {
log.Fatalf("[ERROR] Failed to load stored: %v", err)
}
logstore := hexalog.NewLogStore(entries, index, conf.Hexalog.Hasher)
lognet := hexalog.NewNetTransport(reapInt, maxIdle)
hexalog.RegisterHexalogRPCServer(gserver, lognet)
hexlog, err := fidias.NewHexalog(conf, logstore, stable, fsm, lognet)
if err != nil {
log.Fatalf("[ERROR] Failed to initialize hexalog: %v", err)
}
log.Println("[INFO] Hexalog initialized")
// Key-value
keyvs := fidias.NewKeyvs(conf.KeyValueNamespace, hexlog, fsm)
log.Println("[INFO] Keyvs initialized")
// Blox
journal, bdev, err := setupBlockDevice(*dataDir, conf.Hasher())
if err != nil {
log.Fatalf("[ERROR] Failed to setup block device: %v", err)
}
bloxTrans := setupBlockDeviceTransport(bloxLn, bdev, conf.Hasher())
// Fetcher
fet := fidias.NewFetcher(index, entries, conf.Hexalog.Votes, conf.RelocateBufSize, conf.Hasher())
fet.RegisterBlockTransport(bloxTrans)
// Relocator
rel := fidias.NewRelocator(int64(conf.Hexalog.Votes), conf.Hasher())
rel.RegisterKeylogIndex(index)
rel.RegisterBlockJournal(journal)
blockReplicas := 2
dev := fidias.NewRingDevice(blockReplicas, conf.Hasher(), bloxTrans)
log.Printf("[INFO] Default RingDevice replicas=%d", blockReplicas)
// Fidias
fidTrans := fidias.NewNetTransport(fsm, index, journal, reapInt, maxIdle, conf.Hexalog.Votes, conf.Hasher())
fidias.RegisterFidiasRPCServer(gserver, fidTrans)
fids := fidias.New(conf, hexlog, fsm, rel, fet, keyvs, dev, fidTrans)
// Start serving network requests. This needs to be started before trying to create or
// join the ring as the ring initialization requires the transport
go gserver.Serve(ln)
// Create or join chord ring
log.Printf("[INFO] Initializing ring bind-address=%s", *bindAddr)
if err = initHexaring(ring, peers); err != nil {
log.Fatal("[ERROR]", err)
}
// Register ring
fids.Register(ring)
// Start HTTP API
log.Printf("[INFO] Starting API server bind-address=%s", *httpAddr)
httpServer := gateways.NewHTTPServer("/v1", conf, ring, keyvs, logstore, dev, fids)
http.Handle("/v1/", httpServer)
// HTTP UI
if conf.UIDir != "" {
log.Printf("[INFO] Starting UI directory='%s'", conf.UIDir)
fs := http.FileServer(http.Dir(conf.UIDir))
http.Handle("/", http.StripPrefix("/", fs))
} else {
log.Printf("[INFO] UI disabled")
}
if err = http.ListenAndServe(*httpAddr, nil); err != nil {
log.Fatal("[ERROR]", err)
}
}
// addPeersToStore adds the given comma delimited addrs to the peer store
func addPeersToStore(peerStore hexaring.PeerStore, addrs string) {
peers := strings.Split(addrs, ",")
for _, peer := range peers {
if p := strings.TrimSpace(peer); p != "" {
peerStore.AddPeer(p)
}
}
}