Aurras is a middleware that acts as an event processor and a low code workflow orchestration platform. Aurras is being pitched as a next-generation system for enabling decentralized push notification. This middleware solution listens to events from blockchain applications and propagates them to a registered pool of MQTT brokers. The broader architecture consists of parachain from which the middleware listens for the events.
This Event Feed package facilitates to source events from ethereum chains. The events will be posted to the OpenWhisk system. ethers.js is used under the hood to establish the connection to blockchain nodes and receive events.
Assuming basic dependency such as git and yarn already installed.
- Clone the repository
git clone https://github.com/HugoByte/aurras-event-feed-eth-js.git
- Navigate to the cloned directory
cd aurras-event-feed-eth-js
- Install dependencies
npm install
Configurations are passed through environment variables.
For local development and testing create a .env file with respective configurations in the project root folder.
CHAIN_NAME=NodeTemplate
CHAIN_ENDPOINT=http://127.0.0.1:8545
EVENT_NAME=CallMessage;CallMessageSent
KAFKA_BROKERS=172.17.0.1:9092
OPENWHISK_API_KEY=23bc46b1-71f6-4ed5-8c54-816aa4f8c502:123zO3xZCLrMN6v2BKK1dXYFpXlPkccOFqm12CdAsMgRU4VrNZ9lyGVCGuMDGIwP
OPENWHISK_API_HOST=https://139.84.142.77:31001
OPENWHISK_NAMESPACE=guest
EVENT_RECEIVER=event-receiver
EVENT_PROCESSOR=eth-event-processor
CONTRACT_ADDRESS=0x0DCd1Bf9A1b36cE34237eEaFef220932846BCD82
ABI_PATH=../config/contract.json
TOPIC=d5654951-1909-493b-bf14-849f22f4d462
Note: Before running the application, copy the contract ABI to config folder
Start the feed in development mode.
npx ts-node src/index.ts
or
npm run build
npm start
docker-compose --project-name rth-aurras up -d
Licensed under Apache-2.0