The test network is provided for learning about Fabric by running nodes on your local machine. Chaincode is a piece of code that is written in one of the supported languages such as Go or Java.
$cd fabric-samples/test-network $./network.sh down //Turn off historical network $./network.sh up //Start a new network
After the start up, next step is to view the docker content to check if the containers are running.
$docker ps -a //View docker content
Next step is creating a channel.
./network.sh createChannel -c channelname //Create channel with custom name ./network.sh createChannel //Default channel "mychannel"
If successful, the following interface will be displayed:
After successfully creating a channel, next step is deploy the chaincode.
./network.sh deployCC //Deploy chaincode
If successful, the following interface will be displayed:
Using peer client to interact with chain code.
// Add environment variable
$export PATH=${PWD}/../bin:$PATH
$export FABRIC_CFG_PATH=$PWD/../config/
//Set interaction from Org1, modify as needed
$export CORE_PEER_TLS_ENABLED=true
$export CORE_PEER_LOCALMSPID="Org1MSP"
$export CORE_PEER_TLS_ROOTCERT_FILE=${PWD}/organizations/peerOrganizations/org1.example.com/peers/peer0.org1.example.com/tls/ca.crt
$export CORE_PEER_MSPCONFIGPATH=${PWD}/organizations/peerOrganizations/org1.example.com/users/[email protected]/msp
$export CORE_PEER_ADDRESS=localhost:7051
Query chain code.
$peer chaincode query -C mychannel -n fabcar -c '{"Args":["queryCar","CAR9"]}'
$peer chaincode query -C mychannel -n fabcar -c '{"Args":["queryAllCars"]}'
If successful, the following interface will be displayed:
After the test, shut down the network . The history of the chain will be cleared.
./network.sh down //Turn off historical network