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README.md

Tracking Network

We will create a network to track postal parcels using Hyperledger Fabric. Hyperledger Fabric is a modular blockchain framework. It revolves around a few key concepts. First, the notion of channel, which represents a network with a set of transactions and participants dedicated to the same business objective. Within a channel a transaction is validated by a set of designated peers. On this channel, Smart Contracts can be deployed as "chaincode" to define business logic that will control validation within this network.

Instruction

Network:

  • Deploy a Hyperledger Fabric networks with one channel "PostalServices", two peers representing different cities ("Nairobi" and "Atlanta") belonging to the same organization and a third node "Singapore" belonging to another organization, an ordering node and two certificate authorities.

Objects:

  • Define the following element of our postal network:
    • 'Parcels', of type assets, which include a destination (a string), a current address (a string) and a status
    • 'Transport' a transaction which allows the address of the parcel to be changed a package

Functionalities:

  • Allow the creation of users, postal employees, that can create and modify parcels.
  • Enable tracking of the status of the parcel: Good, Damaged or Destroyed. The state is saved in the package and a transaction allows this state to be modified. The transaction verifies that changes are consistent (state can go only one way... )
  • Distribution, travel from the sorting center to the final address emits an event “Distribution”

Interface and deliverable

  • Provide a README file and necessary script to allow the deployment of the network.
  • Provide a command line interface with
    • create-user, a command to create a user
    • create-parcel a command to create a parcel
    • transport a command to modify the address of a parcel
    • change statusthat can potentially change its status.

Resources

-Hyperledger Fabric documentation -Chain code tutorials