0GDA

Overview

0GDA is a decentralized data availability (DA) service with deep consideration in security, scalability and decentralization. It is also the first DA solution with a built-in data storage layer. Users interact with 0G DA Client to submit and store their data into 0G DA Node for later retrieval.

To dive deep into the technical details, continue reading 0G DA spec.

Integration

Check out this example for how to integrate the 0GDA into your own applications.

For detailed public APIs, visit gRPC API section.

Deployment

Installation

1. Install dependencies

• For Linux

  sudo apt-get update
  sudo apt-get install cmake 

• For Mac

  brew install cmake

2. Install Go

• For Linux

  • Download the Go installer

    wget https://go.dev/dl/go1.22.0.linux-amd64.tar.gz

  • Extract the archive

    rm -rf /usr/local/go && tar -C /usr/local -xzf go1.22.0.linux-amd64.tar.gz

  • Add /usr/local/go/bin to the PATH environment variable by adding the following line to your ~/.profile.

    export PATH=$PATH:/usr/local/go/bin

• For Mac

    Download the Go installer from [https://go.dev/dl/go1.22.0.darwin-amd64.pkg](https://go.dev/dl/go1.19.3.darwin-amd64.pkg).\
    Open the package file you downloaded and follow the prompts to install Go.
  

3. Download the source code

   git clone -b v1.0.0-testnet https://github.com/0glabs/0g-da-client.git

Configuration

Field	Description
--chain.rpc	JSON RPC node endpoint for the blockchain network.
--chain.private-key	Hex-encoded signer private key.
--chain.receipt-wait-rounds	Maximum retries to wait for transaction receipt.
--chain.receipt-wait-interval	Interval between retries when waiting for transaction receipt.
--chain.gas-limit	Transaction gas limit.
--combined-server.use-memory-db	Whether to use mem-db for blob storage.
--combined-server.storage.kv-db-path	Path for level db.
--combined-server.storage.time-to-expire	Expiration duration for blobs in level db.
--combined-server.log.level-file	File log level.
--combined-server.log.level-std	Standard output log level.
--combined-server.log.path	Log file path.
--disperser-server.grpc-port	Server listening port.
--disperser-server.retriever-address	GRPC host for retriever.
--batcher.da-entrance-contract	Hex-encoded da-entrance contract address.
--batcher.da-signers-contract	Hex-encoded da-signers contract address.
--batcher.finalizer-interval	Interval for finalizing operations.
--batcher.finalized-block-count	Default number of blocks between finalized block and latest block.
--batcher.confirmer-num	Number of Confirmer threads.
--batcher.max-num-retries-for-sign	Number of retries before signing fails.
--batcher.batch-size-limit	Maximum batch size in MiB.
--batcher.encoding-request-queue-size	Size of the encoding request queue.
--batcher.encoding-interval	Interval between blob encoding requests.
--batcher.pull-interval	Interval for pulling from the encoded queue.
--batcher.signing-interval	Interval between slice signing requests.
--batcher.signed-pull-interval	Interval for pulling from the signed queue.
--encoder-socket	GRPC host of the encoder.
--encoding-timeout	Total time to wait for a response from encoder.
--signing-timeout	Total time to wait for a response from signer.

Run

1. Build combined server

   make build

2. Run combined server

   Update the following command by referencing the Configuration

   Reference:

   • Testnet Configuration
   • Contract Addresses

   ./bin/combined \
       --chain.rpc L1_RPC_ENDPOINT \
       --chain.private-key YOUR_PRIVATE_KEY \
       --chain.receipt-wait-rounds 180 \
       --chain.receipt-wait-interval 1s \
       --chain.gas-limit 2000000 \
       --combined-server.use-memory-db \
       --combined-server.storage.kv-db-path ./../run/ \
       --combined-server.storage.time-to-expire 2592000 \
       --disperser-server.grpc-port 51001 \
       --batcher.da-entrance-contract ENTRANCE_CONTRACT_ADDR \
       --batcher.da-signers-contract 0x0000000000000000000000000000000000001000 \
       --batcher.finalizer-interval 20s \
       --batcher.confirmer-num 3 \
       --batcher.max-num-retries-for-sign 3 \
       --batcher.finalized-block-count 50 \
       --batcher.batch-size-limit 500 \
       --batcher.encoding-interval 3s \
       --batcher.encoding-request-queue-size 1 \
       --batcher.pull-interval 10s \
       --batcher.signing-interval 3s \
       --batcher.signed-pull-interval 20s \
       --encoder-socket DA_ENCODER_SERVER \
       --encoding-timeout 300s \
       --signing-timeout 60s \
       --chain-read-timeout 12s \
       --chain-write-timeout 13s \
       --combined-server.log.level-file trace \
       --combined-server.log.level-std trace \
       --combined-server.log.path ./../run/run.log

Run via Docker

Guidance

(Optional) Setup DA Retriever

If you want to use the retrieval feature of the DA client, you also need to set up the DA Retriever. Please refer to this document for more details.

Contributing

To make contributions to the project, please follow the guidelines here.