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miner mines continuously,

Browse source 
moved to an account model,
transactions working,
querying working,
more checking of valid data
This commit is contained in:
Josip Milovac 2023-01-10 17:11:56 +11:00
parent 59bb42be11
commit 9847b2056b
12 changed files with 663 additions and 365 deletions
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119
wallet/transaction.js
View file

@ -2,66 +2,77 @@ const ChainUtil = require('../chain-util');
const { MINING_REWARD } = require('../config');
class Transaction {
constructor() {
this.id = ChainUtil.id();
this.input = null;
this.outputs = [];
constructor(senderPublicKey, counter, outputs) {
this.input = senderPublicKey;
this.signature = null;
this.counter = counter;
this.outputs = outputs;
}
update(senderWallet, recipient, amount) {
const senderOutput = this.outputs.find(output => output.address === senderWallet.publicKey);
addSignature(signature) {
if (!ChainUtil.verifySignature(
this.input,
signature,
Transaction.hashToSign(this))) {
console.log("Tried to add an invalid signature to a transaction");
throw new Error("Tried to add an invalid signature to a transaction");
}
this.signature = signature;
}
if (amount > senderOutput.amount) {
console.log(`Amount: ${amount} exceeds balance.`);
return;
static hashToSign(transaction) {
return ChainUtil.hash({
counter: transaction.counter,
outputs: transaction.outputs
});
}
static createOutput(recipient, amount) {
return {
publicKey: recipient,
amount: amount
};
}
//update(senderWallet, recipients) {
// const senderOutput = this.outputs.find(output => output.address === senderWallet.publicKey);
// if (amount > senderOutput.amount) {
// console.log(`Amount: ${amount} exceeds balance.`);
// return;
// }
// senderOutput.amount = senderOutput.amount - amount;
// this.outputs.push({ amount, address: recipient });
// Transaction.signTransaction(this, senderWallet);
// return this;
//}
//static signTransaction(transaction, senderWallet) {
// transaction.input = {
// timestamp: Date.now(),
// address: senderWallet.publicKey,
// signature: senderWallet.sign(ChainUtil.hash(transaction.outputs))
// }
//}
static verify(transaction) {
if (transaction.outputs.length === 0) {
return false;
}
for (const output of transaction.outputs) {
if (!output.hasOwnProperty('amount')) {
return false;
}
if (!output.hasOwnProperty('publicKey')) {
return false;
}
}
senderOutput.amount = senderOutput.amount - amount;
this.outputs.push({ amount, address: recipient });
Transaction.signTransaction(this, senderWallet);
return this;
}
static transactionWithOutputs(senderWallet, outputs) {
const transaction = new this();
transaction.outputs.push(...outputs);
Transaction.signTransaction(transaction, senderWallet);
return transaction;
}
static newTransaction(senderWallet, recipient, amount) {
if (amount > senderWallet.balance) {
console.log(`Amount: ${amount} exceeds balance.`);
return;
}
return Transaction.transactionWithOutputs(senderWallet, [
{ amount: senderWallet.balance - amount, address: senderWallet.publicKey },
{ amount, address: recipient }
]);
}
static rewardTransaction(minerWallet, blockchainWallet) {
return Transaction.transactionWithOutputs(blockchainWallet, [{
amount: MINING_REWARD, address: minerWallet.publicKey
}]);
}
static signTransaction(transaction, senderWallet) {
transaction.input = {
timestamp: Date.now(),
amount: senderWallet.balance,
address: senderWallet.publicKey,
signature: senderWallet.sign(ChainUtil.hash(transaction.outputs))
}
}
static verifyTransaction(transaction) {
return ChainUtil.verifySignature(
transaction.input.address,
transaction.input.signature,
ChainUtil.hash(transaction.outputs)
transaction.input,
transaction.signature,
Transaction.hashToSign(transaction)
);
}
}