bigchaindb-driver
Advanced tools
Official JavaScript driver for BigchainDB to create transactions in Node.js and the browser.
| BigchainDB Server | BigchainDB JavaScript Driver |
|---|---|
0.10 | 0.1.x |
1.0.0 | 0.3.x |
1.3.x | 3.x.x |
>= 2.0.0 | 4.x.x |
npm install bigchaindb-driver
const driver = require('bigchaindb-driver')
// or ES6+
import driver from 'bigchaindb-driver'
const driver = require('bigchaindb-driver')
// BigchainDB server instance (e.g. https://test.bigchaindb.com/api/v1/)
const API_PATH = 'http://localhost:9984/api/v1/'
// Create a new keypair.
const alice = new driver.Ed25519Keypair()
// Construct a transaction payload
const tx = driver.Transaction.makeCreateTransaction(
// Define the asset to store, in this example it is the current temperature
// (in Celsius) for the city of Berlin.
{ city: 'Berlin, DE', temperature: 22, datetime: new Date().toString() },
// Metadata contains information about the transaction itself
// (can be `null` if not needed)
{ what: 'My first BigchainDB transaction' },
// A transaction needs an output
[ driver.Transaction.makeOutput(
driver.Transaction.makeEd25519Condition(alice.publicKey))
],
alice.publicKey
)
// Sign the transaction with private keys
const txSigned = driver.Transaction.signTransaction(tx, alice.privateKey)
// Send the transaction off to BigchainDB
const conn = new driver.Connection(API_PATH)
conn.postTransactionCommit(txSigned)
.then(retrievedTx => console.log('Transaction', retrievedTx.id, 'successfully posted.'))
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>BigchainDB boilerplate</title>
<!-- Adjust version to your needs -->
<script src="https://unpkg.com/bigchaindb-driver@4.0.0/dist/browser/bigchaindb-driver.window.min.js"></script>
<script>
// BigchainDB server instance (e.g. https://test.bigchaindb.com/api/v1/)
const API_PATH = 'http://localhost:9984/api/v1/'
// Create a new keypair.
const alice = new BigchainDB.Ed25519Keypair()
// Construct a transaction payload
const tx = BigchainDB.Transaction.makeCreateTransaction(
// Define the asset to store, in this example it is the current temperature
// (in Celsius) for the city of Berlin.
{ city: 'Berlin, DE', temperature: 22, datetime: new Date().toString() },
// Metadata contains information about the transaction itself
// (can be `null` if not needed)
{ what: 'My first BigchainDB transaction' },
// A transaction needs an output
[ BigchainDB.Transaction.makeOutput(
BigchainDB.Transaction.makeEd25519Condition(alice.publicKey))
],
alice.publicKey
)
// Sign the transaction with private keys
const txSigned = BigchainDB.Transaction.signTransaction(tx, alice.privateKey)
// Send the transaction off to BigchainDB
let conn = new BigchainDB.Connection(API_PATH)
conn.postTransactionCommit(txSigned)
.then(res => {
const elem = document.getElementById('lastTransaction')
elem.href = API_PATH + 'transactions/' + txSigned.id
elem.innerText = txSigned.id
console.log('Transaction', txSigned.id, 'accepted')
})
// Check console for the transaction's status
</script>
</head>
<body id="home">
<h1>Hello BigchainDB</h1>
<p>Your transaction id is: <a id="lastTransaction" target="_blank"><em>processing</em></a></p>
</body>
</html>
This implementation plays "safe" by using JS-native (or downgradable) libraries for its crypto-related functions to keep compatibilities with the browser. If you do want some more speed, feel free to explore the following:
git clone git@github.com:bigchaindb/js-bigchaindb-driver.git
cd js-bigchaindb-driver/
npm i
npm run dev
After updating source files in src/, make sure to update the API documentation. The following command will scan all source files and create the Markdown output into ./API.md:
npm run doc
js-bigchaindb-quickstart of @sohkhai [thanks]Copyright 2017 BigchainDB GmbH
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
FAQs
Node.js driver for BigchainDB
The npm package bigchaindb-driver receives a total of 154 weekly downloads. As such, bigchaindb-driver popularity was classified as not popular.
We found that bigchaindb-driver demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 7 open source maintainers collaborating on the project.
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