Hyperledger Fabric 链码升级

Question

I have setup the hyper-ledger fabric network with 2 organisation, and have install the fabcar chain-code with version v1.1 on peer and i am keeping the storage of blockchain.

Next i added more methods on fabcar, Trying to upgrade the exist fabcar to v1.2, but i am facing the error.

Error: could not assemble transaction, err proposal response was not successful, error code 500, msg cannot get package for chaincode (fabcar:1.2)

I am using the below command to upgrade the chaincode

peer chaincode upgrade -o orderer.example.com:7050 --tls --cafile $ORDERER_CA -C mychannel -n fabcar -v 1.2 -c '{"Args":[""]}' -P "OR('Org1MSP.peer','Org2MSP.peer')"

Answer 1

You first have to install the upgraded version of the chaincode by installing it as version 1.2. Then upgrade it as you were doing earlier.

Answer 2

Error: could not assemble transaction, err proposal response was not successful, error code 500, msg cannot get package for chaincode (fabcar:1.2)

Means your upgraded chaincode was not installed on peers.

Check Your chanincode installed on peers or not?

peer chaincode list --installed

In the output, You saw the only previous installed chaincode. So you have to first package a chaincode and then upgrade a chaincode.

 peer chaincode package ccpack.out -n fabcar -p github.com/hyperledger/fabric/examples/chaincode/go/fabcar -v 1.2 -s -S

peer chaincode signpackage example

 peer chaincode signpackage ccwith1sig.pak ccwith2sig.pak

Upgrade chaincode

peer chaincode upgrade -o orderer.example.com:7050 --tls --cafile $ORDERER_CA -C mychannel -n fabcar -v 1.2 -c '{"Args":[""]}' -P "OR('Org1MSP.peer','Org2MSP.peer')"

I recommend this link to upgrade your fabric chaincode.

Note: replace chaincode path with your chaincode path.

Hope it will help you :)