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Start with Convector

This project was created as part of a tutorial on Convector, the TypeScript framework for creating Hyperledger Fabric applications.

The project is composed of two chaincode packages, packages/participant-cc and packages/asset-cc. It allows organizations to create and share assets associated with participants as owners.

For more information on the context, see the tutorial page.

To install and test the project, follow the following steps.

Install and test the project

To install and test the project, you must clone the repo and follow the following instructions.

Prerequisites

  • Operating system: The project has been tested on ubuntu desktop 16.0 64-bits, but it should work in any environment that supports Fabric and Convector.
  • Node.js: Version 8.14.1. But other versions can work.
  • Docker: 18.09.5
  • Docker-compose: 1.23.1

Install npm dependencies

While in the project directory, install the dependencies:

npm i

And start the unit tests:

npm test

Create a Hyperledger Fabric development network with Hurley

Hurley is a toolset of the Convector Suite that facilitates the management of a Fabric development environment. The first creation of a Fabric network will take time because it will start downloading docker images:

npm i -g @worldsibu/hurley
hurl new

Build and deploy the chaincode in the Fabric network

The following command will build the deployment package of the chaincode and deploy it in the Fabric network:

npm run cc:start -- asset

Invoke the deployed chaincode

Some invocations that can be made on the chaincode.

Create and request participants

Note that the first invocation will take time because it will cause the instantiation of the chaincode. The following invocations will be much faster.

# create two participants
hurl invoke asset participant_register ptcp1 Damien
hurl invoke asset participant_register ptcp2 Booba

# request the participants by their id
hurl invoke asset participant_getParticipantById ptcp1
hurl invoke asset participant_getParticipantById ptcp2

Create and request assets

Create assets owned by previously created participants:

ASSET1_PARAMS='{"id":"as1","ownerId":"ptcp1","value":"Asset1Value","name":"Asset1Name"}'
ASSET2_PARAMS='{"id":"as2","ownerId":"ptcp1","value":"Asset2Value","name":"Asset2Name"}'
ASSET3_PARAMS='{"id":"as3","ownerId":"ptcp2","value":"Asset3Value","name":"Asset3Name"}'
ASSET4_PARAMS='{"id":"as4","ownerId":"ptcp2","value":"Asset4Value","name":"Asset4Name"}'

hurl invoke asset asset_createAsset $ASSET1_PARAMS
hurl invoke asset asset_createAsset $ASSET2_PARAMS
hurl invoke asset asset_createAsset $ASSET3_PARAMS
hurl invoke asset asset_createAsset $ASSET4_PARAMS

Request the list of open and closed assets:

# list of open assets (must return now the list of all assets)
hurl invoke asset asset_getAllOpenAsset

# list of closed assets (must return now an empty list)
hurl invoke asset asset_getAllClosedAsset

Let's close some assets:

hurl invoke asset asset_closeAsset as1
hurl invoke asset asset_closeAsset as2

Request again the list of open and closed assets:

# list of open assets (must return now the assets as3 and as4)
hurl invoke asset asset_getAllOpenAsset

# list of closed assets (must return now the assets as1 and as2)
hurl invoke asset asset_getAllClosedAsset

Troubleshooting

In case of unexpected errors, you can reset the Fabric environment by starting from scratch:

hurl clean; hurl new