working, next step convert REST functions to tcp msg p2p connections

peer/blockchainlib/blockchain.go

@@ -119,6 +119,45 @@ func (bc *Blockchain) ReconstructBlockchainFromBlock(urlAPI string, h string) {
 	}
 	bc.Print()
 }
+func (bc *Blockchain) ReconstructBlockchainFromBlockRESTversion(urlAPI string, h string) {
+	color.Yellow("reconstructing the blockchain from last block in memory")
+	var block Block
+	var err error
+
+	block, err = bc.GetBlockByHash(h)
+	check(err)
+
+	if h == "" {
+		//no genesis block yet
+		color.Green(urlAPI + "/blocks/genesis")
+		res, err := http.Get(urlAPI + "/blocks/genesis")
+		check(err)
+		body, err := ioutil.ReadAll(res.Body)
+		check(err)
+		err = json.Unmarshal(body, &block)
+		check(err)
+		color.Yellow("[New Block]: " + block.Hash)
+		err = bc.AddBlock(block)
+		check(err)
+	} else {
+		block.NextHash = h
+	}
+
+	for block.NextHash != "" && block.Hash != "" {
+		res, err := http.Get(urlAPI + "/blocks/next/" + block.Hash)
+		check(err)
+		body, err := ioutil.ReadAll(res.Body)
+		check(err)
+		err = json.Unmarshal(body, &block)
+		check(err)
+		if block.Hash != "" {
+			color.Yellow("[New Block]: " + block.Hash)
+			err = bc.AddBlock(block)
+			check(err)
+		}
+	}
+	bc.Print()
+}
 
 func (bc *Blockchain) Print() {
 	color.Green("Printing Blockchain stored in memory")

peer/blockchainlib/init.go

@@ -0,0 +1,21 @@
+package blockchainlib
+
+import (
+	p2plib "../p2plib"
+)
+
+func (bc *Blockchain) InitializeBlockchain(role, ip, port, restport, serverip, serverport string) p2plib.ThisPeer {
+
+	//read the stored blockchain
+	err := bc.ReadFromDisk()
+	check(err)
+	bc.Print()
+
+	//get blockchain msgHandlerCases
+	configuredMsgCases := bc.CreateMsgHandlerCases()
+	//initialize p2plib, adding the configuredMsgCases to the p2plib msgCases to handle
+	tp := p2plib.InitializePeer(role, ip, port, restport, serverip,
+		serverport, configuredMsgCases)
+	//return thisPeer (tp)
+	return tp
+}

peer/blockchainlib/messageHandler.go

@@ -0,0 +1,23 @@
+package blockchainlib
+
+import (
+	"fmt"
+
+	p2plib "../p2plib"
+)
+
+func (bc *Blockchain) CreateMsgHandlerCases() map[string]func(p2plib.Peer, p2plib.Msg) {
+	configuredMsgCases := make(map[string]func(p2plib.Peer, p2plib.Msg))
+	configuredMsgCases["Block"] = func(peer p2plib.Peer, msg p2plib.Msg) {
+		//TODO check if the block is signed by an autorized emitter
+		//block = msg.Data converted to Block
+		var block Block
+		if !bc.BlockExists(block) {
+			bc.AddBlock(block)
+			p2plib.PropagateData(peer, "block in string format")
+		}
+	}
+
+	fmt.Println(configuredMsgCases)
+	return configuredMsgCases
+}