jdk

Java Sample App For Kaleido-base Fabric networks

Sample application to use a Kaleido based Hyperledger Fabric blockchain to initialize and invoke chaincode transactions.

Overview

The application is logically made up of 3 parts:

• build the common connections profile (CCP) based on Kaleido's network topology
• register and enroll the identity to submit the transaction
• submit the transaction and query for the result

For the first part, the program uses Kaleido's platform API to gether the information about the orderers and peers in the network, as well as channels and memberships, in order to build the CCP to be used by the SDK.

Prerequisite

Required environment variables:

• APIKEY: Kaleido API key created in your account's profile

Optional environment variables:

• KALEIDO_URL: the root URL for the Kaleido API endpoints. Default is https://console.kaleido.io/api/v1
• USER_ID: name of the user to register and enroll with the Fabric CA service, to be used to submit transactions. Default is user01
• CCNAME: name of the chaincode to invoke. Default is asset_transfer

Follow the instructions in the documentation to create a channel and deploy a chaincode in your Kaleido Fabric network. The name of the Apps project will be used as the chaincode name (value of the CCNAME environment variable).

Run the program

./gradlew run --console=plain