Hyperledger fabric chaincode lifecycle

1. What are the four stages of a chaincode lifecycle?
2. What is chaincode lifecycle?
3. How is chaincode passed around in Hyperledger Fabric?
4. What is the relationship between smart contract and chaincode in Fabric?
5. What is Hyperledger Fabric?
6. Where does a Chaincode get installed in Hyperledger Fabric?
7. What is the role of a Chaincode?
8. What are the languages supported by Fabric Chaincode?
9. What are Chaincode namespaces used for?
10. What is Chaincode in blockchain?
11. Is Chaincode and smart contract same?
12. Does Hyperledger fabric support smart contracts?

What are the four stages of a chaincode lifecycle?

Chaincode lifecycle

We provide four commands to manage a chaincode's lifecycle: package , install , instantiate , and upgrade .

What is chaincode lifecycle?

The Fabric chaincode lifecycle is a process that allows multiple organizations to agree on how a chaincode will be operated before it can be used on a channel. A network operator would use the Fabric lifecycle to perform the following tasks: Install and define a chaincode. ... Migrate to the new Fabric lifecycle.

How is chaincode passed around in Hyperledger Fabric?

The package format used to pass around the chaincode implementation is called ChaincodeDeploymentSpec , which includes the source code, the policies for instantiating (setting up and running) the chaincode application, and the list of entities that have agreed on the chaincode.

What is the relationship between smart contract and chaincode in Fabric?

In Fabric, a smart contract is packaged into the chaincode and then chaincode is deployed to a blockchain network. For simple understanding, you can think of chaincode as the superset of the smart contracts. Multiple smart contracts can be defined within the same chaincode.

What is Hyperledger Fabric?

Hyperledger Fabric is a modular blockchain framework that acts as a foundation for developing blockchain-based products, solutions, and applications using plug-and-play components that are aimed for use within private enterprises.

Where does a Chaincode get installed in Hyperledger Fabric?

You need to have your chaincode available in the GOPATH, then you should be able to install it. Just either add your bitbucket folder into GOPATH or move you chaincode into $GOPATH/src .

What is the role of a Chaincode?

Chaincode runs in a secured Docker container isolated from the endorsing peer process. Chaincode initializes and manages ledger state through transactions submitted by applications. A chaincode typically handles business logic agreed to by members of the network, so it may be considered as a “smart contract”.

What are the languages supported by Fabric Chaincode?

Hyperledger Fabric supports Smart Contact development in general-purpose programming languages, such as JavaScript, Java, Go, and Node. js. Hyperledger Fabric is also operating under a governance model to build trust between participants on a shared network.

What are Chaincode namespaces used for?

A chaincode namespace allows it to keep its world state separate from other chaincodes. Specifically, smart contracts in the same chaincode share direct access to the same world state, whereas smart contracts in different chaincodes cannot directly access each other's world state.

What is Chaincode in blockchain?

Chaincode, also referred to as smart contracts, is software that you can use to read and update data on the blockchain ledger. Chaincode can turn business logic into an executable program that is agreed to and verified by all members of the blockchain network.

Is Chaincode and smart contract same?

In general, a smart contract defines the transaction logic that controls the lifecycle of a business object contained in the world state. ... Think of smart contracts as governing transactions, whereas chaincode governs how smart contracts are packaged for deployment. A smart contract is defined within a chaincode.

Does Hyperledger fabric support smart contracts?

All four Hyperledger frameworks that support smart contracts—Hyperledger Burrow, Hyperledger Fabric, Hyperledger Iroha, and Hyperledger Sawtooth—assume that transactions are atomic.