HyperLedger fabric chaincode not updated

Question

I am trying to follow along this sample Hyperledger Fabric code: https://github.com/hyperledger/education/tree/master/LFS171x/fabric-material

Initially I replaced ch

Answer 1

It's pretty tricky once you miss the sequence. As per my knowledge, deployment of a chaincode in HLF is a two step process.

Step 1. Transfer the source code into the peer ( each chaincode gets a chaincode id which approximately is a function of their name, path and version). This gets signed by your keys and transferred to the all the peers you have chosen as target. ( This step by the way, is called installation. )

Step 2. The source code is compiled, with all the vendor libs ( I'm talking about the GoLang chaincode version here, hoping that it would be same for the other ones too.). A docker image is built and a container gets formed with that binary. ( This is the part which is known as instantiation - which also becomes an Upgrade if it's already done earlier. )

In this process, the step 1 would want the chaincode to be unique. If you have installed once, then if you want to send it again, then make sure you have changed the version number to say abc-1.0 to abc-2.0. This will save you at Installation step.

Once your installation is successful, then it's the matter of when to call for an upgrade and when not. If you have run this container earlier, then right step is to upgrade.

Or the other way around is to do what you did. Clean up and start fresh - which works ok for development, but not for production - as your data goes "poof" with that clean up.