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Argochain Data Ingestor for Redis

This project is a Python script designed to fetch and ingest all historical data from a Substrate-based blockchain while simultaneously listening for and ingesting real-time data. The data is stored in a Redis database and published for easy access and analysis.

Features

  • Historical Data Ingestion: Fetches all historical blocks from the blockchain, starting from block 1 up to the latest finalized block.
  • Real-Time Data Listening: Continuously listens for new blocks as they are produced and ingests them into Redis.
  • Parallel Processing: Utilizes parallel processing to fetch multiple blocks simultaneously, improving performance.
  • Redis Integration: Stores blocks in Redis and publishes updates on new blocks for real-time monitoring and analysis.

Requirements

  • Python 3.7+
  • Redis
  • pip to install Python dependencies

Python Packages

The following Python packages are required:

  • requests
  • redis
  • certifi
  • asyncio

Installation

1. Clone the Repository

Clone this repository to your local machine:

git clone https://github.com/your-username/substrate-blockchain-ingestor.git
cd substrate-blockchain-ingestor

2. Set Up a Virtual Environment (Optional)

It's recommended to use a virtual environment to manage dependencies:

python3 -m venv myenv
source myenv/bin/activate

3. Install Required Python Packages

Install the necessary Python packages using pip:

pip install redis certifi requests

4. Ensure Redis is Running

Make sure you have a Redis server running locally or remotely. You can start Redis using:

redis-server

Usage

Running the Script

After setting up the environment and installing dependencies, you can run the script:

python3 ingester.py

What the Script Does

  • Historical Data Fetching: The script fetches all historical blocks in batches and ingests them into Redis.
  • Real-Time Data Listening: While historical data is being fetched, the script also listens for new blocks and ingests them in real-time.
  • Data Storage: Each block is stored in Redis with the key format block:<block_number>.

Configuration

You can configure various parameters in the script, such as:

  • BATCH_SIZE: Number of blocks to fetch in each batch.
  • MAX_WORKERS: Number of parallel workers to use for fetching blocks.
  • RPC_ENDPOINT: URL of the Substrate RPC endpoint.

Query Argochain by Block Number

Currently, the script supports queries by block number; however, the output is data rich when a block number is queried. Run this command after you started the Redis server:

redis-cli get block:[blocknumber] | jq .

Specify a block number for blocknumber above.

For example, if you query block 23867 on Argochain, you will run

redis-cli get block:23867 | jq .

And the output is below:

Screenshot 2024-08-29 at 2 53 56 PM

However, if you wish to query another parameter (like parentHash, for example), keep in mind Redis stores the data of a block in a serialized JSON object, not as keys and suffixes. That being said, you can query parentHash, extrinsics, logs, etc. by passing them as a jq suffix.

Run the following commands below to get information on the block's data:

# Remember to specify the block number in place of [blocknumber] below:

# Get the parentHsh of the block
redis-cli GET block:[blocknumber] | jq '.block.header.parentHash' 

# Get the stateRoot of the block
redis-cli GET block:[blocknumber] | jq '.block.header.stateRoot'

# Get the logs of the block
redis-cli GET block:[blocknumber] | jq '.block.header.digest.logs[]'

# Get the extrinsics of the block
redis-cli GET block:[blocknumber] | jq '.block.extrinsics[]'

Troubleshooting

Common Issues

  • Import Errors: Ensure that there is no file named redis.py in your working directory to avoid conflicts with the redis Python package.
  • SSL Certificate Errors: The script uses certifi to handle SSL certificates. If you encounter SSL errors, ensure that the certificates are correctly installed and accessible.

Logs

The script logs all activities, including any errors encountered during execution. You can check the console output for detailed logs.

License

This project is licensed under the MIT License. See the LICENSE file for details.

Contributing

Contributions are welcome! Please fork this repository, make your changes, and submit a pull request.

Contact

For questions or suggestions, please open an issue or contact me at christian@devolvedai.com.

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