predix-sample-chaincode

Sample Chaincode

This repo holds the sample chaincode that can be deployed to hyperledger blockchain network, which is the underlying blockchain implementation used in Predix Blockchain-as-a-service.

This chaincode shows how you can use zone attribute, which is set for each user to enforce zone based access control in chaincode itself.

Use this chaincode as a reference for enforcing zone based access control as well as hyperledger dependencies.

How to use

1. Make sure GO environment is setup (GOPATH, GOROOT)

2. Go get this repo

   go get github.com/predix/chaincode_example
   

3. Make sure it compiles

   cd $GOPATH/src/github.com/predix/chaincode_example/predix-sample-chaincode
   go build example.go
   

4. Make required changes to example.go as per requirement for your smart contract.

5. Make sure the changes compile

6. Create a tar.gz of the chaincode and dependencies and upload it to predix blockchain service

   tar czvf mychaincode.tgz *
   

   Use PUT /v1/chaincodes/:chaincodename endpoint of Predix blockchain service to deploy this chaincode to predix blockchain.