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feat: gossipsub 1.1 (#733)

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* feat: gossipsub 1.1

BREAKING CHANGE: pubsub implementation is now directly exposed and its API was updated according to the new pubsub interface in js-libp2p-interfaces repo

* chore: use gossipsub branch with src added

* fix: add pubsub handlers adapter

* chore: fix deps

* chore: update pubsub docs and examples

* chore: apply suggestions from code review

Co-authored-by: Jacob Heun <jacobheun@gmail.com>

* chore: use new floodsub

* chore: change validator doc set

Co-authored-by: Jacob Heun <jacobheun@gmail.com>

* chore: add new gossipsub src

Co-authored-by: Jacob Heun <jacobheun@gmail.com>
This commit is contained in:
Vasco Santos
2020-08-25 16:48:04 +02:00
committed by Jacob Heun
parent 1e869717ff
commit 55c9bfac44
12 changed files with 248 additions and 175 deletions
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32
examples/pubsub/message-filtering/1.js
View File

@ -8,6 +8,7 @@ const { NOISE } = require('libp2p-noise')
const SECIO = require('libp2p-secio')
const Gossipsub = require('libp2p-gossipsub')
const uint8ArrayFromString = require('uint8arrays/from-string')
const uint8ArrayToString = require('uint8arrays/to-string')
const createNode = async () => {
const node = await Libp2p.create({
@ -43,29 +44,34 @@ const createNode = async () => {
await node2.dial(node3.peerId)
//subscribe
await node1.pubsub.subscribe(topic, (msg) => {
console.log(`node1 received: ${msg.data.toString()}`)
node1.pubsub.on(topic, (msg) => {
console.log(`node1 received: ${uint8ArrayToString(msg.data)}`)
})
await node1.pubsub.subscribe(topic)
await node2.pubsub.subscribe(topic, (msg) => {
console.log(`node2 received: ${msg.data.toString()}`)
node2.pubsub.on(topic, (msg) => {
console.log(`node2 received: ${uint8ArrayToString(msg.data)}`)
})
await node2.pubsub.subscribe(topic)
await node3.pubsub.subscribe(topic, (msg) => {
console.log(`node3 received: ${msg.data.toString()}`)
node3.pubsub.on(topic, (msg) => {
console.log(`node3 received: ${uint8ArrayToString(msg.data)}`)
})
await node3.pubsub.subscribe(topic)
const validateFruit = (msgTopic, peer, msg) => {
const fruit = msg.data.toString();
const validateFruit = (msgTopic, msg) => {
const fruit = uint8ArrayToString(msg.data)
const validFruit = ['banana', 'apple', 'orange']
const valid = validFruit.includes(fruit);
return valid;
if (!validFruit.includes(fruit)) {
throw new Error('no valid fruit received')
}
}
//validate fruit
node1.pubsub._pubsub.topicValidators.set(topic, validateFruit);
node2.pubsub._pubsub.topicValidators.set(topic, validateFruit);
node3.pubsub._pubsub.topicValidators.set(topic, validateFruit);
node1.pubsub.topicValidators.set(topic, validateFruit)
node2.pubsub.topicValidators.set(topic, validateFruit)
node3.pubsub.topicValidators.set(topic, validateFruit)
// node1 publishes "fruits" every five seconds
var count = 0;

31
examples/pubsub/message-filtering/README.md
View File

@ -44,31 +44,36 @@ Now we' can subscribe to the fruit topic and log incoming messages.
```JavaScript
const topic = 'fruit'
await node1.pubsub.subscribe(topic, (msg) => {
console.log(`node1 received: ${msg.data.toString()}`)
node1.pubsub.on(topic, (msg) => {
console.log(`node1 received: ${uint8ArrayToString(msg.data)}`)
})
await node1.pubsub.subscribe(topic)
await node2.pubsub.subscribe(topic, (msg) => {
console.log(`node2 received: ${msg.data.toString()}`)
node2.pubsub.on(topic, (msg) => {
console.log(`node2 received: ${uint8ArrayToString(msg.data)}`)
})
await node2.pubsub.subscribe(topic)
await node3.pubsub.subscribe(topic, (msg) => {
console.log(`node3 received: ${msg.data.toString()}`)
node3.pubsub.on(topic, (msg) => {
console.log(`node3 received: ${uint8ArrayToString(msg.data)}`)
})
await node3.pubsub.subscribe(topic)
```
Finally, let's define the additional filter in the fruit topic.
```JavaScript
const validateFruit = (msgTopic, peer, msg) => {
const fruit = msg.data.toString();
const validateFruit = (msgTopic, msg) => {
const fruit = uint8ArrayToString(msg.data)
const validFruit = ['banana', 'apple', 'orange']
const valid = validFruit.includes(fruit);
return valid;
if (!validFruit.includes(fruit)) {
throw new Error('no valid fruit received')
}
}
node1.pubsub._pubsub.topicValidators.set(topic, validateFruit);
node2.pubsub._pubsub.topicValidators.set(topic, validateFruit);
node3.pubsub._pubsub.topicValidators.set(topic, validateFruit);
node1.pubsub.topicValidators.set(topic, validateFruit)
node2.pubsub.topicValidators.set(topic, validateFruit)
node3.pubsub.topicValidators.set(topic, validateFruit)
```
In this example, node one has an outdated version of the system, or is a malicious node. When it tries to publish fruit, the messages are re-shared and all the nodes share the message. However, when it tries to publish a vehicle the message is not re-shared.