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starter.go
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starter.go
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package bcstarter
import (
"Blockchain-Framework/src/blockchain"
"Blockchain-Framework/src/configs"
"Blockchain-Framework/src/core"
"encoding/json"
"fmt"
"io/ioutil"
"log"
"net"
"net/http"
"time"
)
var blockchainVar blockchain.Chain
//Starterb : start a blockchian node
func Starterb(pathConfig string, chainDir string) error {
var sc configs.BChainConfig
h, err := configs.ExtractBChainConfig(&sc, pathConfig, false)
if err != nil {
return err
}
fmt.Println("hash", h)
//------------------------------------------------
blockchainVar, err = retriveChain(chainDir)
if err != nil {
return err
}
s := blockchain.StdBCServer(sc)
if err := s.SetVar("ConfigHash", h); err != nil {
return err
}
for _, v := range sc.SOURCEIPS {
conn, err := net.Dial("tcp", v)
if err != nil {
fmt.Println(err)
continue
}
/*iam := core.NewMessage(core.IAmNode, nil)
bcm := core.NewMessage(core.BChainMessage, iam)
bcm.Send(nil, conn)*/
confMex := core.NewMessage(core.Config, ([]byte)(h))
bcm := core.NewMessage(core.BChainMessage, confMex)
//spew.Dump(confMex)
bcm.Send(nil, conn)
s.Emit("connected", conn)
}
go serveHttp()
if sc.VALIDATE {
go blockchain.Validate(s)
}
time.AfterFunc(time.Second*20, func() {
s.Emit("ready", nil)
r, err := s.GetRoom("nodes")
if err != nil {
return
}
rmex := core.NewMessage(core.AmReady, nil)
bcmex := core.NewMessage(core.BChainMessage, rmex)
r.BroadcastMessage(bcmex)
})
s.Start()
return nil
}
func retriveChain(dir string) (blockchain.Chain, error) {
CreateDirIfNotExist(dir)
var bChain []blockchain.Block
_, err := ioutil.ReadFile(dir + "/blocks-0.ggs")
if err != nil {
bChain = make([]blockchain.Block, 1)
genesis, err := blockchain.GenerateGenesisBlock()
b, err := json.MarshalIndent(genesis, " ", " ")
SaveToFile(dir+"/blocks-0.ggs", b)
if err != nil {
return nil, err
}
bChain[0] = genesis
}
chain := blockchain.NewChain(bChain, dir)
return chain, nil
}
func serveHttp() {
http.HandleFunc("/set-tx", HttpPostTx)
http.HandleFunc("/", HttpGetChain)
log.Fatal(http.ListenAndServe(":80", nil))
}