[EPIC] Indexer Implementation

[sideninja]

A module must be implemented to index the EVM-related data in local storage. Having an index of such data will allow for querying this data through the grpc API described here: #12

Such a module would have to rely on Flow events to monitor the EVM execution and extrapolate relevant data out of two relevant EVM events:

• Transaction execution event: evm.TransactionExecuted
• Block execution event: evm.BlockExecuted

The requirements for the indexer are:

• persistence of the data index
• indexing the event data in sequence without skipping any of the events
• index the data in real-time, not falling behind the execution
• allow for multiple concurrent query requests and allow for scaling to thousands of requests per second

Implementation will be broken into multiple tasks, defined bellow:

Tasks

Beta Give feedback

1. Implement event consumer #15
   +0
   
2. Decode the events into relevant types #16
   +0
   
3. Setup persistent storage #17
   +0
   
4. Implement a reliable progress tracker #18
   +0
   
5. Implement querying events by topic #28
   +0
   
6. Integration testing #38
   +0
   
7. Bootstrap and integrate the indexer #49
   +0
   
8. Add nonce tracking with the new indexer #56
   +0
   
9. Use API for e2e testing #57
   +0
   
10. Cadence and EVM height mapping #58
    +0
    
11. Refactor Flow interactions #59
    +0
    

[j1010001]

superseded by #126