Implement DAG builder for parsing Ethereum logs about ethereum-etl-airflow HOT 6 CLOSED

@askeluv There is an example here for converting event signature e.g. Transfer(address,address,uint256) to it's hash: https://github.com/blockchain-etl/ethereum-etl/blob/develop/ethereumetl/cli/get_keccak_hash.py. It uses the keccak function from eth_utils lib.

I've also found these 2 functions in eth_utils/abi.py:

def event_signature_to_log_topic(event_signature: str) -> bytes:
    return keccak(text=event_signature.replace(" ", ""))


def event_abi_to_log_topic(event_abi: Dict[str, Any]) -> bytes:
    event_signature = _abi_to_signature(event_abi)
    return event_signature_to_log_topic(event_signature)

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Issue Status: 1. Open 2. Started 3. Submitted 4. Done

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Issue Status: 1. Open 2. Started 3. Submitted 4. Done

Work has been started.

These users each claimed they can complete the work by 2 weeks from now.
Please review their action plans below:

1) igetgames has applied to start work (Funders only: approve worker | reject worker).

I will implement the DAG builder according to ethereum-etl-airflow/issues#17 and the README.
2) askeluv has started work.

Create an Airflow DAG builder which can later be used to parse Ethereum logs given an ABI. For example 0x transactions and ENS events.

Learn more on the Gitcoin Issue Details page.

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Should we also add a field event_topic inside the parser object, so we can filter out the right log rows? Or is there perhaps some easy way to convert from the event name to the topic / signature?

E.g. Fill events for 0x should be topic 0x0bcc4c97732e47d9946f229edb95f5b6323f601300e4690de719993f3c371129

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Issue Status: 1. Open 2. Started 3. Submitted 4. Done

Work for 500.0 DAI (500.0 USD @ $1.0/DAI) has been submitted by:

1. @askeluv

@ceresstation please take a look at the submitted work:

• PR by @askeluv

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from ethereum-etl-airflow.

Issue Status: 1. Open 2. Started 3. Submitted 4. Done

The funding of 500.0 DAI (500.0 USD @ $1.0/DAI) attached to this issue has been approved & issued to @askeluv.

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• Questions? Checkout Gitcoin Help or the Gitcoin Slack
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