basic-blockchain-app

Update Works with hyperledger/fabric commit: 118f82f04a8f3227480904ea6b7c3ed961c0d8c1.

Works with hyperledger/fabric-ca commit: 855036cc931b20c0019f9f67e4b7f8acb9ec868d.

Blockchain application developed on Hyperledger Fabric(v1.0.0) using the Fabric-Node-SDK(v1.0.0-alpha). Simple modifications to the end to end example provided to exercise the entire functionality of SDK.

Instructions to run:

1. Download hyperledger/fabric and hyperledger/fabric-ca to /home/$USER/directory_name/src/github.com/

2. Ensure that export GOPATH=/home/$USER/directory_name

3. Go to fabric directory and run 'make docker' and then 'make couchdb'.

4. Go to fabric-ca directory and run 'make docker'.

5. Go to the directory you cloned this repository and run:

   a. docker-compose up -d

   b. export GOPATH=$PWD && npm install && npm install --save async && npm install system-sleep

   c. node create-channel.js

   d. node join-channel.js

   e. node install-chaincode.js

   f. node instantiate-chaincode.js

   g. Go to parameters.json and modify the invoke_transaction parameters to any of the ones mentioned below.

   h. node invoke-transaction.js

   i. Go to parameters.json and modify the query-transaction parameters to any of the ones mentioned below.

   j. node query.js

To initialize with default purchase orders:

1. node initialize-default.js
2. Now querying with queryPOIds will return a list of PoIds that were just added.

Please refer to chaincode to see what each function does

Invoke Transaction parameters:

1. "createPO", "purchase_order_number" (Example : ["createPO","PO156897"])
2. "deletePO", "purchase_order_number" (Example : ["delete","PO156897"])
3. "updateStatus", "purchase_order_number", "status_update" (Example : ["updateStatus","PO156897","Delivered"])
4. "updateQuantity", "purchase_order_number", "new_quantity" (Example : ["updateQuantity","PO156897","150"])
5. "updateCustomer", "purchase_order_number", "customer_name" (Example : ["updateStatus","PO156897","Company XYZ"])
6. "updateSupplier", "purchase_order_number", "supplier_name" (Example : ["updateStatus","PO156897","Company ABC"])
7. "updatePartName", "purchase_order_number", "part_name" (Example : ["updateStatus","PO156897","Razor Gaming Keyboard"])
8. "createCompletePO", "purchase_order_number", "quantity", "part_name", "customer", "supplier", "status" (Example : ["createCompletePO","PO156897","10","Razor Gaming Keyboard","Company ABC","Company XYZ","Order Created"])
9. "addProductPrice", "productname", "price" (Example : ["addProductPrice","B543-Router","$35"])
10. "updatePrice", "purchase_order_number" (Example : ["updatePrice","PO156897"])

Query Transaction parameters:

1. "queryPO", "purchase_order_number" (Example : ["queryPO","PO156897"])
2. "queryPOIds", "" (Example : ["queryPOIds"])
3. "queryAllPO", "" (Example : ["queryAllPO"])

If there are any issues it's usually because the development environment is not setup properly. Make sure to follow all the setup instructions only, from https://github.com/hyperledger/fabric-sdk-node and the 'Prerequisites' from http://hyperledger-fabric.readthedocs.io/en/latest/dev-setup/devenv.html?highlight=development.

(If you update the chaincode and the node program does not refer to the new chaincode when you run the code, then it means that you have a leftover docker image. Run "docker images | grep "dev-peer" | awk '{print $1}' | xargs docker rmi" to delete all previous chaincode images)