Eventeum

An Ethereum event listener that bridges your smart contract events and backend microservices. Eventeum listens for specified event emissions from the Ethereum network, and broadcasts these events into your middleware layer. This provides a distinct separation of concerns and means that your microservices do not have to subscribe to events directly to an Ethereum node.

Features

• Configurable Event Filters. Supports filtering by smart contract events content, transaction fields (e.g., from, to) and more.
• Resilient Event Extraction. Designed to handle high volumes of operations while remaining tolerant to issues such as node connection failures.
• Configurable Broadcast Recipients. Events can be broadcast to databases, queues, in-memory objects when embedded in another application, among other options. New recipients can be easily added.
• Flexible Deployment. Can be deployed as a standalone microservice with a REST API for event filter configuration or embedded within another backend component, exposing Java interfaces for seamless integration.
• Multi-DLT Support. Compatible with multiple DLT protocols, including Ethereum clients, Hedera mirror nodes, and more.

Supported Broadcast Mechanisms

• Kafka
• HTTP Post
• RabbitMQ
• Pulsar

For RabbitMQ, you can configure the following extra values

• rabbitmq.blockNotification
• rabbitmq.routingKey.contractEvents
• rabbitmq.routingKey.blockEvents
• rabbitmq.routingKey.transactionEvents

Documentation

• Getting started
• Configuration
• Usage
• Metrics
• Known Caveats / Issues