bigchaindb/js-bigchaindb-driver
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static methods

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This commit is contained in:
manolodewiner 2018-01-15 15:42:34 +01:00
parent 4dd006b8cb
commit 3725afa4a0
3 changed files with 29 additions and 26 deletions
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4
src/index.js
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@ -1,4 +1,6 @@
export Ed25519Keypair from './Ed25519Keypair' export Ed25519Keypair from './Ed25519Keypair'
export Transaction from './transaction'
export Connection from './connection' export Connection from './connection'
export Transaction from './transaction'
export ccJsonLoad from './utils/ccJsonLoad'
export ccJsonify from './utils/ccJsonify'

45
src/transaction.js
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@ -13,10 +13,10 @@ export default class Transaction {
* @param {object} (transaction) * @param {object} (transaction)
* @return {string} a canonically serialized Transaction * @return {string} a canonically serialized Transaction
*/ */
serializeTransactionIntoCanonicalString(transaction) { static 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 = this.clone(transaction) const tx = clone(transaction)
// TODO: set fulfillments to null // TODO: set fulfillments to null
// Sort the keys // Sort the keys
return stableStringify(tx, (a, b) => (a.key > b.key ? 1 : -1)) return stableStringify(tx, (a, b) => (a.key > b.key ? 1 : -1))
@ -30,12 +30,12 @@ export default class Transaction {
} }
} }
hashTransaction(transaction) { static 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
return sha256Hash(this.serializeTransactionIntoCanonicalString(tx)) return sha256Hash(Transaction.serializeTransactionIntoCanonicalString(tx))
} }
static makeTransactionTemplate() { static makeTransactionTemplate() {
@ -51,8 +51,8 @@ export default class Transaction {
return txTemplate return txTemplate
} }
makeTransaction(operation, asset, metadata = null, outputs = [], inputs = []) { static makeTransaction(operation, asset, metadata = null, outputs = [], inputs = []) {
const tx = this.makeTransactionTemplate() const tx = Transaction.makeTransactionTemplate()
tx.operation = operation tx.operation = operation
tx.asset = asset tx.asset = asset
tx.metadata = metadata tx.metadata = metadata
@ -60,7 +60,7 @@ export default class Transaction {
tx.outputs = outputs tx.outputs = outputs
// Hashing must be done after, as the hash is of the Transaction (up to now) // Hashing must be done after, as the hash is of the Transaction (up to now)
tx.id = this.hashTransaction(tx) tx.id = Transaction.hashTransaction(tx)
return tx return tx
} }
@ -83,13 +83,13 @@ export default class Transaction {
* @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!
*/ */
makeCreateTransaction(asset, metadata, outputs, ...issuers) { static makeCreateTransaction(asset, metadata, outputs, ...issuers) {
const assetDefinition = { const assetDefinition = {
'data': asset || null, 'data': asset || null,
} }
const inputs = issuers.map((issuer) => this.makeInputTemplate([issuer])) const inputs = issuers.map((issuer) => Transaction.makeInputTemplate([issuer]))
return this.makeTransaction('CREATE', assetDefinition, metadata, outputs, inputs) return Transaction.makeTransaction('CREATE', assetDefinition, metadata, outputs, inputs)
} }
/** /**
@ -100,8 +100,8 @@ export default class Transaction {
* @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)
*/ */
makeEd25519Condition(publicKey, json = true) { static makeEd25519Condition(publicKey, json = true) {
const publicKeyBuffer = Buffer.from(this.base58.decode(publicKey)) const publicKeyBuffer = Buffer.from(base58.decode(publicKey))
const ed25519Fulfillment = new cc.Ed25519Sha256() const ed25519Fulfillment = new cc.Ed25519Sha256()
ed25519Fulfillment.setPublicKey(publicKeyBuffer) ed25519Fulfillment.setPublicKey(publicKeyBuffer)
@ -122,7 +122,7 @@ export default class Transaction {
* @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
*/ */
makeOutput(condition, amount = '1') { static 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')
} }
@ -136,7 +136,7 @@ export default class Transaction {
details.subconditions.map(getPublicKeys) details.subconditions.map(getPublicKeys)
} }
} }
this.getPublicKeys(condition.details) getPublicKeys(condition.details)
return { return {
condition, condition,
'amount': amount, 'amount': amount,
@ -151,12 +151,12 @@ export default class Transaction {
* @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)
*/ */
makeSha256Condition(preimage, json = true) { static makeSha256Condition(preimage, json = true) {
const sha256Fulfillment = new cc.PreimageSha256() const sha256Fulfillment = new cc.PreimageSha256()
sha256Fulfillment.preimage = Buffer.from(preimage) sha256Fulfillment.preimage = Buffer.from(preimage)
if (json) { if (json) {
return this.ccJsonify(sha256Fulfillment) return ccJsonify(sha256Fulfillment)
} }
return sha256Fulfillment return sha256Fulfillment
} }
@ -169,7 +169,7 @@ export default class Transaction {
* @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)
*/ */
makeThresholdCondition(threshold, subconditions = [], json = true) { static makeThresholdCondition(threshold, subconditions = [], json = true) {
const thresholdCondition = new cc.ThresholdSha256() const thresholdCondition = new cc.ThresholdSha256()
thresholdCondition.threshold = threshold thresholdCondition.threshold = threshold
@ -179,7 +179,7 @@ export default class Transaction {
}) })
if (json) { if (json) {
return this.ccJsonify(thresholdCondition) return ccJsonify(thresholdCondition)
} }
return thresholdCondition return thresholdCondition
@ -207,7 +207,7 @@ export default class Transaction {
*/ */
// TODO: // TODO:
// - Make `metadata` optional argument // - Make `metadata` optional argument
makeTransferTransaction( static makeTransferTransaction(
unspentOutputs, unspentOutputs,
outputs, outputs,
metadata metadata
@ -228,7 +228,7 @@ export default class Transaction {
: unspentOutputs[0].tx.asset.id : unspentOutputs[0].tx.asset.id
} }
return this.makeTransaction('TRANSFER', assetLink, metadata, outputs, inputs) return Transaction.makeTransaction('TRANSFER', assetLink, metadata, outputs, inputs)
} }
/** /**
@ -243,12 +243,13 @@ export default class Transaction {
* the `transaction`. * the `transaction`.
* @returns {object} The signed version of `transaction`. * @returns {object} The signed version of `transaction`.
*/ */
signTransaction(transaction, ...privateKeys) { static 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]
const privateKeyBuffer = Buffer.from(base58.decode(privateKey)) const privateKeyBuffer = Buffer.from(base58.decode(privateKey))
const serializedTransaction = this.serializeTransactionIntoCanonicalString(transaction) const serializedTransaction = Transaction
.serializeTransactionIntoCanonicalString(transaction)
const ed25519Fulfillment = new cc.Ed25519Sha256() const ed25519Fulfillment = new cc.Ed25519Sha256()
ed25519Fulfillment.sign(Buffer.from(serializedTransaction), privateKeyBuffer) ed25519Fulfillment.sign(Buffer.from(serializedTransaction), privateKeyBuffer)
const fulfillmentUri = ed25519Fulfillment.serializeUri() const fulfillmentUri = ed25519Fulfillment.serializeUri()

6
test/transaction/test_cryptoconditions.js
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@ -1,6 +1,6 @@
import test from 'ava' import test from 'ava'
import cc from 'crypto-conditions' import cc from 'crypto-conditions'
import { Ed25519Keypair, Transaction } from '../../src' import { Ed25519Keypair, Transaction, ccJsonLoad } from '../../src'
test('Ed25519 condition encoding', t => { test('Ed25519 condition encoding', t => {
const publicKey = '4zvwRjXUKGfvwnParsHAS3HuSVzV5cA4McphgmoCtajS' const publicKey = '4zvwRjXUKGfvwnParsHAS3HuSVzV5cA4McphgmoCtajS'
@ -68,7 +68,7 @@ test('Fulfillment correctly formed', t => {
test('CryptoConditions JSON load', t => { test('CryptoConditions JSON load', t => {
const cond = Transaction.ccJsonLoad({ const cond = ccJsonLoad({
type: 'threshold-sha-256', type: 'threshold-sha-256',
threshold: 1, threshold: 1,
subconditions: [{ subconditions: [{
@ -84,7 +84,7 @@ test('CryptoConditions JSON load', t => {
test('CryptoConditions JSON load', t => { test('CryptoConditions JSON load', t => {
const cond = Transaction.ccJsonLoad({ const cond = ccJsonLoad({
type: 'threshold-sha-256', type: 'threshold-sha-256',
threshold: 1, threshold: 1,
subconditions: [{ subconditions: [{