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https://github.com/Nerolation/ethereum-datafarm
Scrap blockchain data from the public API of Etherscan.io
https://github.com/Nerolation/ethereum-datafarm
Last synced: about 2 months ago
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Scrap blockchain data from the public API of Etherscan.io
- Host: GitHub
- URL: https://github.com/Nerolation/ethereum-datafarm
- Owner: nerolation
- License: apache-2.0
- Created: 2021-03-13T18:40:38.000Z (over 3 years ago)
- Default Branch: main
- Last Pushed: 2023-02-25T14:26:40.000Z (over 1 year ago)
- Last Synced: 2024-01-31T01:02:01.971Z (5 months ago)
- Language: Python
- Size: 19.9 MB
- Stars: 58
- Watchers: 2
- Forks: 11
- Open Issues: 0
-
Metadata Files:
- Readme: Readme.md
- License: License
Lists
- ultimate-defi-research-base - Ethereum-datafarm - Easy-to-use console app for parsing historical event data without requiring an archive node, using the Etherscan API. (Developer Tools)
README
# ethereum-datafarm v2.0
[](https://github.com/dwyl/esta/issues)
[](http://hits.dwyl.com/Nerolation/ethereum-datafarm)
### Parse Smart Contract event data without requiring an archive/full node.
The ethereum-datafarm aims to provide quick access to historical Ethereum event data by offering an easy-to-use interface to parse event logs from contracts and save them in .csv format.
#### The ethereum-datafarm uses the [Etherscan.io API](https://docs.etherscan.io/), which can be used for free up to fairly generous limits.
## Features:
* Scraps every type of event data from pre-defined contracts
* Fetches Abis from contracts to detect events
* No local or [Infura](https://infura.io/?utm_source=Nerolation_Github&utm_medium=ethereum-datafarm) node required
* Low CPU and RAM requirements
* Multiprocessing support
* Custom storage location using the `-loc` or `--location` flag: E.g. `python3 run.py -loc ./myfolder`
## Example data output
Or check out [this sample output file](sample_output/csv/13_11_2019.csv) of dai transfers
## Usage
```bash
$ cd ./src
$ python3 run.py
```
OR
```python
from ethereum_datafarm import *
if __name__=="__main__":
# Initialize Farm
farm = Farm()
# Load Contracts
farm.load_contracts()
# Start parsing
farm.farm()
```
###### NOTE: If the event-emitting contract is a proxie contract (e.g. upgradable contracts) then the abi detection may fail. In such cases, take the right abi from Etherscan and add the .abi file manually.
###### NOTE: If you have too many cores, you might reach the API limit (this will be logged). In such cases, use the `-c` or `--cores` flag to set the amount of cores to be used. A value of `-c 4` is recommended.
###### NOTE: If you want to activate logging (useful for debugging), use the `-log` or `--log` flag. The logs are stored at "./logs.txt"
### Install from source
```bash
$ git clone https://github.com/Nerolation/ethereum-datafarm
$ cd ethereum-datafarm
$ python3 -m venv .
$ source bin/activate
$ pip install -r requirements.txt
```
#### Requirements:
* Python 3.5 or higher
* Etherscan API key (for free at [etherscan.io](https://etherscan.io))
##### Make sure that contracts.csv has the following structure: (Contract address, custom name, canonical Event, start block, chunksize)
```js
0x30f938fED5dE6e06a9A7Cd2Ac3517131C317B1E7,giveth,Donate(uint64,uint64,address,uint256),5876857,50000
0x30f938fED5dE6e06a9A7Cd2Ac3517131C317B1E7,giveth,DonateAndCreateGiver(address,uint64,address,uint256),5876857,50000
0xDe30da39c46104798bB5aA3fe8B9e0e1F348163F,gitcoin,Transfer(address,address,uint256),12422079,50000
0x1fd169A4f5c59ACf79d0Fd5d91D1201EF1Bce9f1,molochdao,SubmitVote(uint256,address,address,uint8),7218566,50000
```
## Demo
Initialize farm and starts parsing data:
* Loads contracts from contracts.csv file
* Starts farm instance
* Loops over contracts and saves data into .csv
[](https://asciinema.org/a/b0ZTp6qsZQ7iB8OHjoppow6DH)
### Cite as
```
@misc{Wahrstaetter2022,
title = {Ethereum-datafarm},
url = {https://github.com/Nerolation/ethereum-datafarm},
urldate = {2022-08-18},
publisher = {Github},
author = {Anton Wahrstätter},
year = {2022},
}
```
Visit [toniwahrstaetter.com](https://toniwahrstaetter.com/) for further details!
Anton Wahrstätter, 18.08.2022