goBlockchainDataAnalysis/exploreBlockchain.go

package main

import (
	"fmt"
	"strconv"

	"github.com/btcsuite/btcd/chaincfg/chainhash"
	"github.com/btcsuite/btcrpcclient"
)

func explore(client *btcrpcclient.Client, blockHash string) {
	var realBlocks int
	var nOrigin NodeModel
	nOrigin.Id = "origin"
	nOrigin.Label = "origin"
	nOrigin.Title = "origin"
	nOrigin.Group = "origin"
	nOrigin.Value = 1
	nOrigin.Shape = "dot"
	saveNode(nodeCollection, nOrigin)

	for blockHash != "" {
		//generate hash from string
		bh, err := chainhash.NewHashFromStr(blockHash)
		check(err)
		block, err := client.GetBlockVerbose(bh)
		check(err)

		//if len(block.Tx) < 10 {
		for k, txHash := range block.Tx {
			if k > 0 {
				realBlocks++
				fmt.Print("Block Height: ")
				fmt.Print(block.Height)
				fmt.Print(", num of Tx: ")
				fmt.Print(k)
				fmt.Print("/")
				fmt.Println(len(block.Tx) - 1)

				th, err := chainhash.NewHashFromStr(txHash)
				check(err)
				tx, err := client.GetRawTransactionVerbose(th)
				check(err)

				var originAddresses []string
				var outputAddresses []string
				for _, Vo := range tx.Vout {
					//if Vo.Value > 0 {
					for _, outputAddr := range Vo.ScriptPubKey.Addresses {
						outputAddresses = append(outputAddresses, outputAddr)
						var n2 NodeModel
						n2.Id = outputAddr
						n2.Label = outputAddr
						n2.Title = outputAddr
						n2.Group = strconv.FormatInt(block.Height, 10)
						n2.Value = 1
						n2.Shape = "dot"
						saveNode(nodeCollection, n2)
					}
					//}
				}
				for _, Vi := range tx.Vin {
					th, err := chainhash.NewHashFromStr(Vi.Txid)
					check(err)
					txVi, err := client.GetRawTransactionVerbose(th)
					check(err)
					if len(txVi.Vout[Vi.Vout].ScriptPubKey.Addresses) > 0 {
						for _, originAddr := range txVi.Vout[Vi.Vout].ScriptPubKey.Addresses {
							originAddresses = append(originAddresses, originAddr)
							var n1 NodeModel
							n1.Id = originAddr
							n1.Label = originAddr
							n1.Title = originAddr
							n1.Group = string(block.Height)
							n1.Value = 1
							n1.Shape = "dot"
							saveNode(nodeCollection, n1)

							for _, outputAddr := range outputAddresses {
								var e EdgeModel
								e.From = originAddr
								e.To = outputAddr
								e.Label = txVi.Vout[Vi.Vout].Value
								e.Txid = tx.Txid
								e.Arrows = "to"
								e.BlockHeight = block.Height
								saveEdge(edgeCollection, e)
								//fmt.Println(e)
							}
						}
					} else {
						originAddresses = append(originAddresses, "origin")
					}

				}
				fmt.Print("originAddresses: ")
				fmt.Println(len(originAddresses))
				fmt.Print("outputAddresses: ")
				fmt.Println(len(outputAddresses))
			}
		}
		//}
		//set the next block
		blockHash = block.NextHash
	}

	fmt.Print("realBlocks (blocks with Fee and Amount values): ")
	fmt.Println(realBlocks)
	fmt.Println("reached the end of blockchain")
}