1. Hyperledger Fabric NodeSDK
Chaincode Lifecycle 2.0
7/10/2019
fabric-client 2.0

2. Overview
The NodeSDK will add new API’s to support fabric lifecycle 2.0.
The existing Chaincode lifecycle API’s will be left untouched to support customers that have not enabled the new capability.
setup - create the necessary application objects and chaincode definition
package - package the chaincode source artifacts
install - push to the network
approve for organization - each organization will define a specific chaincode definition
commit for channel - channel members will agree to run a specific chaincode definition
initialize - start the chaincode container and initialize the chaincode
7/10/2019
fabric-client 2.0

3. Overview Chaincode.js Step 1: Setup Step 2: Package Step 3: Install
New class to perform chaincode definition and non channel related tasks
Chaincode.js
Step 1: Setup
build up a definition within app
Step 2: Package
source code packaged within app
Step 3: Install
send package to peer , save the returned hash
7/10/2019
fabric-client 2.0

4. Overview Channel.js Step 4: Approve Chaincode for Organization
New API’s on the channel object for the channel based steps.
uses a Chaincode instance for the definition (name, version, hash, sequence, endorsement policy)
Channel.js
Step 4: Approve Chaincode for Organization
invoke approve chaincode transaction to the system lifecycle
Step 5: Define Chaincode for Channel
invoke commit chaincode transaction to the system lifecycle
7/10/2019
fabric-client 2.0

5. Overview Channel.js Step 6: Initialize
Use an existing API to initialize on the channel object
Use “init” instead of invoke
Channel.js
Step 6: Initialize
Invoke “init” transaction to new chaincode
7/10/2019
fabric-client 2.0

6. build the application objects
Step: 1 - Setup
build the application objects
Client
Channel
Peer
Orderer
Chaincode
Set the needed attributes
Endorsement policy
Collection configuration
Sequence
Name / version
All organizations will do this step
This is a new class, new methods on the chaincode.
7/10/2019
fabric-client 2.0

7. Build a tar file from the source code files and metadata files
Step: 2 - Package
Build a tar file from the source code files and metadata files
Available to be sent to other organizations
This should only be done by one organization
This is a new class, new method on the chaincode.
7/10/2019
fabric-client 2.0

8. Send the packaged code to a peer Save the hash value returned
Step: 3 - Install
Send the packaged code to a peer
Save the hash value returned
May have received the package out of band in package step
Install must be done on every peer where the chaincode is expected to be executed
This is a new class, new method on the chaincode.
7/10/2019
fabric-client 2.0

9. Step: 4 - Approve for Organization
Send a “approve chaincode definition for organization” chaincode lifecycle transaction to one peer in our organization
Commit the transaction (send to orderer)
Each organization will perform this step
This is a new API, new method on the channel.
7/10/2019
fabric-client 2.0

10. Step: 5 - Commit for Channel
Send a “commit definition chaincode for channel” chaincode lifecycle transaction to enough organizations
Commit transaction (send to orderer)
Only one organization will do this step
This is a new API, new method on the channel.
7/10/2019
fabric-client 2.0

11. Step: 6 - Initialize the chaincode
Send an endorsement to enough peers
“init” must be the function
Starts the chaincode container and the ”init” method is called with the provided arguments
Commit the transaction
Only one organization will do this step
This is not a new API, existing method on the channel.
7/10/2019
fabric-client 2.0