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Made class for Transaction file

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michielmulders 2017-11-02 21:03:15 +01:00
parent aba3c7d4bc
commit 61179c167b
1 changed files with 233 additions and 229 deletions
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28
src/transaction.js
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@ -6,13 +6,16 @@ import cc from 'five-bells-condition'
import ccJsonify from './utils/ccJsonify' import ccJsonify from './utils/ccJsonify'
import sha256Hash from './sha256Hash' import sha256Hash from './sha256Hash'
export default class Transaction {
constructor() { }
/** /**
* @public * @public
* Canonically serializes a transaction into a string by sorting the keys * Canonically serializes a transaction into a string by sorting the keys
* @param {object} (transaction) * @param {object} (transaction)
* @return {string} a canonically serialized Transaction * @return {string} a canonically serialized Transaction
*/ */
export default function serializeTransactionIntoCanonicalString(transaction) { serializeTransactionIntoCanonicalString(transaction) {
// BigchainDB signs fulfillments by serializing transactions into a // BigchainDB signs fulfillments by serializing transactions into a
// "canonical" format where // "canonical" format where
const tx = clone(transaction) const tx = clone(transaction)
@ -21,7 +24,7 @@ export default function serializeTransactionIntoCanonicalString(transaction) {
return stableStringify(tx, (a, b) => (a.key > b.key ? 1 : -1)) return stableStringify(tx, (a, b) => (a.key > b.key ? 1 : -1))
} }
export default function makeInputTemplate(publicKeys = [], fulfills = null, fulfillment = null) { makeInputTemplate(publicKeys = [], fulfills = null, fulfillment = null) {
return { return {
fulfillment, fulfillment,
fulfills, fulfills,
@ -29,7 +32,7 @@ export default function makeInputTemplate(publicKeys = [], fulfills = null, fulf
} }
} }
export default function hashTransaction(transaction) { hashTransaction(transaction) {
// Safely remove any tx id from the given transaction for hashing // Safely remove any tx id from the given transaction for hashing
const tx = { ...transaction } const tx = { ...transaction }
delete tx.id delete tx.id
@ -37,7 +40,7 @@ export default function hashTransaction(transaction) {
return sha256Hash(serializeTransactionIntoCanonicalString(tx)) return sha256Hash(serializeTransactionIntoCanonicalString(tx))
} }
function makeTransactionTemplate() { makeTransactionTemplate() {
return { return {
'id': null, 'id': null,
'operation': null, 'operation': null,
@ -49,7 +52,7 @@ function makeTransactionTemplate() {
} }
} }
export default function makeTransaction(operation, asset, metadata = null, outputs = [], inputs = []) { makeTransaction(operation, asset, metadata = null, outputs = [], inputs = []) {
const tx = makeTransactionTemplate() const tx = makeTransactionTemplate()
tx.operation = operation tx.operation = operation
tx.asset = asset tx.asset = asset
@ -81,7 +84,7 @@ export default function makeTransaction(operation, asset, metadata = null, outpu
* @returns {object} Unsigned transaction -- make sure to call signTransaction() on it before * @returns {object} Unsigned transaction -- make sure to call signTransaction() on it before
* sending it off! * sending it off!
*/ */
export default function makeCreateTransaction(asset, metadata, outputs, ...issuers) { makeCreateTransaction(asset, metadata, outputs, ...issuers) {
const assetDefinition = { const assetDefinition = {
'data': asset || null, 'data': asset || null,
} }
@ -97,7 +100,7 @@ export default function makeCreateTransaction(asset, metadata, outputs, ...issue
* @param {boolean} [json=true] If true returns a json object otherwise a crypto-condition type * @param {boolean} [json=true] If true returns a json object otherwise a crypto-condition type
* @returns {object} Ed25519 Condition (that will need to wrapped in an Output) * @returns {object} Ed25519 Condition (that will need to wrapped in an Output)
*/ */
export default function makeEd25519Condition(publicKey, json = true) { makeEd25519Condition(publicKey, json = true) {
const publicKeyBuffer = new Buffer(base58.decode(publicKey)) const publicKeyBuffer = new Buffer(base58.decode(publicKey))
const ed25519Fulfillment = new cc.Ed25519Sha256() const ed25519Fulfillment = new cc.Ed25519Sha256()
@ -118,7 +121,7 @@ export default function makeEd25519Condition(publicKey, json = true) {
* @param {string} amount Amount of the output * @param {string} amount Amount of the output
* @returns {object} An Output usable in a Transaction * @returns {object} An Output usable in a Transaction
*/ */
export default function makeOutput(condition, amount = '1') { makeOutput(condition, amount = '1') {
if (typeof amount !== 'string') { if (typeof amount !== 'string') {
throw new TypeError('`amount` must be of type string') throw new TypeError('`amount` must be of type string')
} }
@ -147,7 +150,7 @@ export default function makeOutput(condition, amount = '1') {
* @param {boolean} [json=true] If true returns a json object otherwise a crypto-condition type * @param {boolean} [json=true] If true returns a json object otherwise a crypto-condition type
* @returns {object} Preimage-Sha256 Condition (that will need to wrapped in an Output) * @returns {object} Preimage-Sha256 Condition (that will need to wrapped in an Output)
*/ */
export default function makeSha256Condition(preimage, json = true) { makeSha256Condition(preimage, json = true) {
const sha256Fulfillment = new cc.PreimageSha256() const sha256Fulfillment = new cc.PreimageSha256()
sha256Fulfillment.preimage = new Buffer(preimage) sha256Fulfillment.preimage = new Buffer(preimage)
@ -165,7 +168,7 @@ export default function makeSha256Condition(preimage, json = true) {
* @param {boolean} [json=true] If true returns a json object otherwise a crypto-condition type * @param {boolean} [json=true] If true returns a json object otherwise a crypto-condition type
* @returns {object} Sha256 Threshold Condition (that will need to wrapped in an Output) * @returns {object} Sha256 Threshold Condition (that will need to wrapped in an Output)
*/ */
export default function makeThresholdCondition(threshold, subconditions = [], json = true) { makeThresholdCondition(threshold, subconditions = [], json = true) {
const thresholdCondition = new cc.ThresholdSha256() const thresholdCondition = new cc.ThresholdSha256()
thresholdCondition.threshold = threshold thresholdCondition.threshold = threshold
@ -203,7 +206,7 @@ export default function makeThresholdCondition(threshold, subconditions = [], js
*/ */
// TODO: // TODO:
// - Make `metadata` optional argument // - Make `metadata` optional argument
export default function makeTransferTransaction( makeTransferTransaction(
unspentTransaction, unspentTransaction,
metadata, metadata,
outputs, outputs,
@ -239,7 +242,7 @@ export default function makeTransferTransaction(
* the `transaction`. * the `transaction`.
* @returns {object} The signed version of `transaction`. * @returns {object} The signed version of `transaction`.
*/ */
export default function signTransaction(transaction, ...privateKeys) { signTransaction(transaction, ...privateKeys) {
const signedTx = clone(transaction) const signedTx = clone(transaction)
signedTx.inputs.forEach((input, index) => { signedTx.inputs.forEach((input, index) => {
const privateKey = privateKeys[index] const privateKey = privateKeys[index]
@ -254,3 +257,4 @@ export default function signTransaction(transaction, ...privateKeys) {
return signedTx return signedTx
} }
}