node-red-contrib-hyperledger-composer

A set of nodes for interacting with Hyperledger Composer

Hyperledger-Composer-Out

A node red output node that allows you to create, update or delete assets or participants and submit transactions.

Example Usage

This example uses the Car Auction Sample Network that can be obtained from here

The Car Auction Sample, simulates a car auction. It has two kinds of participant. An Auctioneer, who is responsible for conducting the auction, and a member who can bid on cars in the auction. In this example we will create a participant, the participant .

1. Deploy the Car Auction Sample Network using the playground or on the command line (If you don't know how to do this go here)

2. Create a hyperledger-composer-out node

3. On Composer Card click the pencil top add a new config node. Specify the card name, or use the drop down to use one previous created.

4. Use an inject node and set it to use JSON and enter the following JSON

{"$class": "org.acme.vehicle.auction.Member",   "balance": 1234,   "email": "Joe-Blogs@org.acme.com",   "firstName": "Joe",   "lastName": "Blogs" }

1. Using the playground or command line you should now be able to see the participant that has been created.

Hyperledger-Composer-Mid

A node red mid flow node that allows you to create, retrieve, update, or delete assets and participants from a registry.

Example Usage

This example follows on from the above example. It will retrieve the participant that was created above.

1. Create a hyperledger-composer-mid node

2. On Composer Card click the pencil top add a new config node. Specify the card name, or use the drop down to use one previous created.

3. Use an inject node and set it to use JSON and enter the following JSON

{"modelName" : "org.acme.vehicle.auction.Member", "id" : "Joe-Blogs@org.acme.com"}

1. Use a debug node to capture the output from the hyperledger-composer-mid node

Hyperledger-Composer-In

A node red input node that subscribes to events from a blockchain

1. On Composer Card click the pencil top add a new config node. Specify the card name, or use the drop down to use one previous created.

License

Hyperledger Project source code files are made available under the Apache License, Version 2.0 (Apache-2.0), located in the LICENSE file. Hyperledger Project documentation files are made available under the Creative Commons Attribution 4.0 International License (CC-BY-4.0), available at http://creativecommons.org/licenses/by/4.0/.