First example

This commit is contained in:
Michiel Mulders 2018-01-20 14:25:15 +01:00
parent c371e3bfad
commit 2deba0cad8
6 changed files with 190 additions and 0 deletions

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{
"presets": ["es2015", "stage-3"],
"plugins": ["syntax-async-functions", "transform-runtime", "transform-regenerator", "transform-async-to-generator"]
}

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node_modules

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# Usage
`npm install`

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{
"name": "js-driver-bigchaindb-examples",
"version": "1.0.0",
"main": "src/app.js",
"scripts": {
"start": "nodemon src/app.js --exec babel-node",
"build": "npm run clean && babel src -d dist",
"serve": "node dist/app.js",
"clean": "rimraf ./dist"
},
"author": "BigchainDB",
"license": "MIT",
"devDependencies": {
"babel-cli": "^6.26.0",
"babel-core": "^6.13.2",
"babel-loader": "^6.2.4",
"babel-plugin-syntax-async-functions": "^6.13.0",
"babel-plugin-transform-async-to-generator": "^6.8.0",
"babel-plugin-transform-regenerator": "^6.11.4",
"babel-plugin-transform-runtime": "^6.12.0",
"babel-preset-es2015": "^6.13.2",
"babel-preset-stage-3": "^6.11.0",
"nodemon": "^1.14.8",
"rimraf": "^2.6.2"
},
"repository": "/",
"private": true,
"dependencies": {
"bigchaindb-driver": "^3.2.0"
}
}

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// const driver = require('../../../src/index')
import * as driver from 'bigchaindb-driver'
// ======== Preparation ======== //
const conn = new driver.Connection('https://test.bigchaindb.com/api/v1/', {
app_id: 'c17a9968',
app_key: '0b277b94893e7b0a5b4e6afd6bccb01d'
})
const alice = new driver.Ed25519Keypair()
const bob = new driver.Ed25519Keypair()
const assetdata = {
'bicycle': {
'serial_number': 'abcd1234',
'manufacturer': 'Bicycle Inc.',
}
}
const metadata = { 'planet': 'earth' }
// ======== Create Transaction Bicycle ======== //
const txCreateAliceSimple = driver.Transaction.makeCreateTransaction(
assetdata,
metadata,
[driver.Transaction.makeOutput(
driver.Transaction.makeEd25519Condition(alice.publicKey))
],
alice.publicKey
)
const txCreateAliceSimpleSigned =
driver.Transaction.signTransaction(txCreateAliceSimple, alice.privateKey)
console.log(txCreateAliceSimpleSigned)
// ======== Post Transaction and Fetch Result ======== //
conn.postTransaction(txCreateAliceSimpleSigned)
// Check status of transaction every 0.5 seconds until fulfilled
.then(() => conn.pollStatusAndFetchTransaction(txCreateAliceSimpleSigned.id))
.then(retrievedTx => {
console.log('Transaction', retrievedTx.id, 'successfully posted.')
return retrievedTx
})
// Check status after transaction has completed (result: { 'status': 'valid' })
// If you check the status of a transaction before it's added to BigchainDB,
// BigchainDb will return that the transaction is still waiting in the 'backlog'
.then(() => conn.getStatus(txCreateAliceSimpleSigned.id))
.then(status => console.log('Retrieved status method 2: ', status))
// ======== Transfer Bicycle to Bob ======== //
.then(() => {
try {
console.log(txCreateAliceSimpleSigned)
const txTransferBob = driver.Transaction.makeTransferTransaction(
[{ tx: txCreateAliceSimpleSigned, output_index: 0 }],
[driver.Transaction.makeOutput(driver.Transaction.makeEd25519Condition(bob.publicKey))],
{ price: '100 euro' }
)
// Sign transfer transaction with Alice's private key
const txTransferBobSigned = driver.Transaction.signTransaction(txTransferBob, alice.privateKey)
console.log('Posting signed transaction: ', txTransferBobSigned)
} catch (err) {
console.log(err)
}
return conn.postTransaction(txTransferBobSigned)
})
.then(res => {
console.log('Response from BDB server:', res)
return conn.pollStatusAndFetchTransaction(res.id)
})
.then(tx => {
console.log('Is Bob the owner?', tx.outputs[0].public_keys[0] === bob.publicKey)
console.log('Was Alice the previous owner?', tx.inputs[0].owners_before[0] === alice.publicKey)
})
// ======== Search Asset by Serial Number ======== //
.then(() => conn.searchAssets('Bicycle Inc.'))
.then(assets => console.log('Found assets with serial number Bicycle Inc.:', assets))

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const driver = require('../../src/index')
// ======== Preparation ======== //
const conn = new driver.Connection('https://test.bigchaindb.com/api/v1/', {
app_id: 'c17a9968',
app_key: '0b277b94893e7b0a5b4e6afd6bccb01d'
})
const alice = new driver.Ed25519Keypair()
const bob = new driver.Ed25519Keypair()
const assetdata = {
'bicycle': {
'serial_number': 'abcd1234',
'manufacturer': 'Bicycle Inc.',
}
}
const metadata = { 'planet': 'earth' }
// ======== Create Transaction Bicycle ======== //
const txCreateAliceSimple = driver.Transaction.makeCreateTransaction(
assetdata,
metadata,
[driver.Transaction.makeOutput(
driver.Transaction.makeEd25519Condition(alice.publicKey))
],
alice.publicKey
)
const txCreateAliceSimpleSigned =
driver.Transaction.signTransaction(txCreateAliceSimple, alice.privateKey)
// ======== Post Transaction and Fetch Result ======== //
conn.postTransaction(txCreateAliceSimpleSigned)
// Check status of transaction every 0.5 seconds until fulfilled
.then(() => conn.pollStatusAndFetchTransaction(txCreateAliceSimpleSigned.id))
.then(retrievedTx => console.log('Transaction', retrievedTx.id, 'successfully posted.'))
// Check status after transaction has completed (result: { 'status': 'valid' })
// If you check the status of a transaction before it's added to BigchainDB,
// BigchainDb will return that the transaction is still waiting in the 'backlog'
.then(() => conn.getStatus(txCreateAliceSimpleSigned.id))
.then(status => console.log('Retrieved status method 2: ', status))
// ======== Transfer Bicycle to Bob ======== //
.then(() => {
const txTransferBob = driver.Transaction.makeTransferTransaction(
[{ tx: txCreateAliceSimpleSigned, output_index: 0 }],
[driver.Transaction.makeOutput(driver.Transaction.makeEd25519Condition(bob.publicKey))],
{ price: '100 euro' }
)
// Sign transfer transaction with Alice's private key
const txTransferBobSigned = driver.Transaction.signTransaction(txTransferBob, alice.privateKey)
console.log('Posting signed transaction: ', txTransferBobSigned)
return conn.postTransaction(txTransferBobSigned)
})
.then(res => {
console.log('Response from BDB server:', res)
return conn.pollStatusAndFetchTransaction(res.id)
})
.then(tx => {
console.log('Is Bob the owner?', tx.outputs[0].public_keys[0] === bob.publicKey)
console.log('Was Alice the previous owner?', tx.inputs[0].owners_before[0] === alice.publicKey)
})
// ======== Search Asset by Serial Number ======== //
.then(() => conn.searchAssets('Bicycle Inc.'))
.then(assets => console.log('Found assets with serial number Bicycle Inc.:', assets))