func WriteRPCResponse(w http.ResponseWriter, res RPCResponse) {
buf, n, err := new(bytes.Buffer), new(int64), new(error)
binary.WriteJSON(res, buf, n, err)
if *err != nil {
log.Warn("Failed to write RPC response", "error", err)
}
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(200)
w.Write(buf.Bytes())
}
// Used to write json files using tendermints binary package.
func writeJSON(file string, v interface{}) error {
var n int64
var errW error
fo, errC := os.Create(file)
if errC != nil {
return errC
}
binary.WriteJSON(v, fo, &n, &errW)
if errW != nil {
return errW
}
errL := fo.Close()
if errL != nil {
return errL
}
return nil
}
// receives on a write channel and writes out on the socket
func (con *WSConnection) write() {
defer con.wsConn.Close()
n, err := new(int64), new(error)
for {
select {
case msg := <-con.writeChan:
buf := new(bytes.Buffer)
binary.WriteJSON(msg, buf, n, err)
if *err != nil {
log.Error("Failed to marshal WSResponse to JSON", "error", err)
} else {
if err := con.wsConn.WriteMessage(websocket.TextMessage, buf.Bytes()); err != nil {
log.Warn("Failed to write response on websocket", "error", err)
con.Stop()
return
}
}
case <-con.quitChan:
return
}
}
}
// Encode to an io.Writer.
func (this *TCodec) Encode(v interface{}, w io.Writer) error {
var err error
var n int64
binary.WriteJSON(v, w, &n, &err)
return err
}
func NewNode() *Node {
// Get BlockStore
blockStoreDB := dbm.GetDB("blockstore")
blockStore := bc.NewBlockStore(blockStoreDB)
// Get State
stateDB := dbm.GetDB("state")
state := sm.LoadState(stateDB)
var genDoc *sm.GenesisDoc
if state == nil {
genDoc, state = sm.MakeGenesisStateFromFile(stateDB, config.GetString("genesis_file"))
state.Save()
// write the gendoc to db
buf, n, err := new(bytes.Buffer), new(int64), new(error)
binary.WriteJSON(genDoc, buf, n, err)
stateDB.Set(sm.GenDocKey, buf.Bytes())
if *err != nil {
panic(Fmt("Unable to write gendoc to db: %v", err))
}
} else {
genDocBytes := stateDB.Get(sm.GenDocKey)
err := new(error)
binary.ReadJSONPtr(&genDoc, genDocBytes, err)
if *err != nil {
panic(Fmt("Unable to read gendoc from db: %v", err))
}
}
// add the chainid to the global config
config.Set("chain_id", state.ChainID)
// Get PrivValidator
var privValidator *sm.PrivValidator
privValidatorFile := config.GetString("priv_validator_file")
if _, err := os.Stat(privValidatorFile); err == nil {
privValidator = sm.LoadPrivValidator(privValidatorFile)
log.Info("Loaded PrivValidator",
"file", privValidatorFile, "privValidator", privValidator)
} else {
privValidator = sm.GenPrivValidator()
privValidator.SetFile(privValidatorFile)
privValidator.Save()
log.Info("Generated PrivValidator", "file", privValidatorFile)
}
// Generate node PrivKey
privKey := acm.GenPrivKeyEd25519()
// Make event switch
eventSwitch := new(events.EventSwitch)
eventSwitch.Start()
// Get PEXReactor
book := p2p.NewAddrBook(config.GetString("addrbook_file"))
pexReactor := p2p.NewPEXReactor(book)
// Get BlockchainReactor
bcReactor := bc.NewBlockchainReactor(state.Copy(), blockStore, config.GetBool("fast_sync"))
// Get MempoolReactor
mempool := mempl.NewMempool(state.Copy())
mempoolReactor := mempl.NewMempoolReactor(mempool)
// Get ConsensusReactor
consensusState := consensus.NewConsensusState(state.Copy(), blockStore, mempoolReactor)
consensusReactor := consensus.NewConsensusReactor(consensusState, blockStore, config.GetBool("fast_sync"))
if privValidator != nil {
consensusReactor.SetPrivValidator(privValidator)
}
// Make Switch
sw := p2p.NewSwitch()
sw.AddReactor("PEX", pexReactor)
sw.AddReactor("MEMPOOL", mempoolReactor)
sw.AddReactor("BLOCKCHAIN", bcReactor)
sw.AddReactor("CONSENSUS", consensusReactor)
// add the event switch to all services
// they should all satisfy events.Eventable
SetFireable(eventSwitch, pexReactor, bcReactor, mempoolReactor, consensusReactor)
return &Node{
sw: sw,
evsw: eventSwitch,
book: book,
blockStore: blockStore,
pexReactor: pexReactor,
bcReactor: bcReactor,
mempoolReactor: mempoolReactor,
consensusState: consensusState,
consensusReactor: consensusReactor,
privValidator: privValidator,
genDoc: genDoc,
privKey: privKey,
}
}
