Add SubQuery indexer benchmark to ERC20 transfer events case

[DZakh]

Summary

This PR adds SubQuery as a new indexer to the ERC20 transfer events benchmark suite, enabling performance comparison with existing indexers (Ponder, Rindexer, Squid, and Envio).

Key Changes

• Benchmark Integration: Added benchmarkSubQuery() function to the benchmark runner that:

  • Manages SubQuery lifecycle via Docker Compose
  • Handles dependency installation, codegen, and build steps
  • Queries the GraphQL endpoint to collect metrics on processed events and blocks
  • Cleans up Docker resources after benchmarking

• SubQuery Project Setup: Created a complete SubQuery Ethereum indexer configuration:

  • project.ts: Defines the indexer configuration targeting the RocketTokenRETH contract (0xae78736cd615f374d3085123a210448e74fc6393) starting at block 18,600,000
  • schema.graphql: Defines entities for Account, TransferEvent, Allowance, and ApprovalEvent
  • mappingHandlers.ts: Implements event handlers for Transfer and Approval events with account balance tracking and allowance management
  • package.json: Specifies SubQuery dependencies and build scripts

• Docker Infrastructure: Added Docker Compose configuration for running SubQuery with:

  • PostgreSQL database service with health checks
  • SubQuery node service with configurable RPC endpoint
  • GraphQL query engine service
  • Custom PostgreSQL Dockerfile with required extensions

• CI/CD: Added GitHub Actions workflow job to validate SubQuery build and codegen steps

• Configuration Files: Added TypeScript config, .gitignore, and environment example file

Implementation Details

• The benchmark uses the same GraphQL query pattern as other indexers, querying _metadata.lastProcessedHeight and event counts
• Event IDs are generated from block number and log index to ensure uniqueness
• The implementation tracks account balances and allowances in addition to event records
• Docker Compose is used for consistent, reproducible benchmark execution

https://claude.ai/code/session_01FN9sUj2bn1fq1msFgiQ8B2