simplekeyvaluestore

Simple Key-Value Store Chaincode for Hyperledger Fabric

This repository contains a simple chaincode (smart contract) written in Go for Hyperledger Fabric. It implements a basic key-value store, allowing users to set and retrieve values associated with specific keys. This example serves as a foundational piece for understanding how to develop and deploy chaincodes in a Hyperledger Fabric network.

Prerequisites

• Go programming language (version 1.13 or newer)
• Hyperledger Fabric network setup

Installation

1. Clone this repository into the src folder of your $GOPATH to ensure it is properly recognized by Go:

git clone https://github.com/Marqui-13/simpleKeyValueStore.git $GOPATH/src/simpleKeyValueStore

1. Navigate to the cloned repository directory:

cd $GOPATH/src/simpleKeyValueStore

Deployment

To deploy this chaincode to your Hyperledger Fabric network, follow the standard chaincode installation and instantiation procedures provided in the Hyperledger Fabric documentation. This typically involves:

• Packaging the chaincode
• Installing the chaincode on your peer(s)
• Instantiating the chaincode on your channel

Chaincode Functions

• set: Stores a key-value pair in the ledger. Expects two arguments: the key and the value.
• get: Retrieves the value associated with a key from the ledger. Expects one argument: the key.

Usage

After deploying the chaincode to your Fabric network, you can interact with it using the Fabric peer CLI or SDKs:

• To set a value:

peer chaincode invoke -n mycc -c '{"Args":["set", "myKey", "myValue"]}' -C mychannel

• To get a value:

peer chaincode query -n mycc -c '{"Args":["get", "myKey"]}' -C mychannel

Contributing

We welcome contributions to enhance this simple chaincode or improve the documentation. Please feel free to fork the repository, make your changes, and submit a pull request.

License

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

Acknowledgments

• Hyperledger Fabric community for their extensive documentation and examples.