evm-scanner/app.yaml.example at master · 84hero/evm-scanner · GitHub

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# Scan Filter Configuration
filters:
  - description: "USDT Transfers"
    # List of contract addresses to listen to (leave empty to listen to all networks)
    contracts:
      - "0xdAC17F958D2ee523a2206206994597C13D831ec7" # USDT
    # Event signature Topic (Topic0)
    # Transfer(address,address,uint256)
    topics:
      - ["0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"]
    # Optional: Provide ABI JSON string for automatic log decoding
    abi: '[{"anonymous":false,"inputs":[{"indexed":true,"name":"from","type":"address"},{"indexed":true,"name":"to","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Transfer","type":"event"}]'

# Diverse Output Configurations (Pipeline mode, multiple can be enabled)
outputs:
  # 1. Webhook Push
  webhook:
    enabled: false
    url: "https://your-api-endpoint.com/webhook"
    secret: "your-signature-secret"
    retry:
      max_attempts: 3
      initial_backoff: "1s"
      max_backoff: "10s"
    # [Performance] Async buffering: Scanner won't wait for Webhook response
    async: true
    buffer_size: 2000 # Memory buffer size
    workers: 5        # Concurrent sending workers

  # 2. Local File Storage (JSON Lines format)
  file:
    enabled: false
    path: "./data/events.jsonl"

  # 3. Standard Output (JSON Stream)
  # Can be processed via pipe: ./scanner-cli | jq .
  console:
    enabled: true

  # 4. PostgreSQL (Relational Database)
  # Auto table creation, supports UNIQUE constraints to prevent duplicates
  postgres:
    enabled: false
    url: "postgres://user:pass@localhost:5432/dbname?sslmode=disable"
    table: "contract_events"

  # 5. Redis (High-performance Middleware)
  redis:
    enabled: false
    addr: "localhost:6379"
    password: ""
    db: 0
    key: "evm_events_queue"
    mode: "list" # "list" (Queue) or "pubsub" (Subscription)

  # 6. Kafka (Massive Data Stream)
  kafka:
    enabled: false
    brokers: ["localhost:9092"]
    topic: "evm-events"
    # user: ""
    # password: ""

  # 7. RabbitMQ (Enterprise Message Queue)
  rabbitmq:
    enabled: false
    url: "amqp://guest:guest@localhost:5672/"
    exchange: "evm_events_ex"
    routing_key: "eth.mainnet"
    queue_name: "evm_events_q" # If configured, will be auto-declared and bound on start
    durable: true              # Message durability