HyperLedger-Fabric Error unmarshalling chaincode request payload illegal base64 data at input byte 0

Question

I try to deploy chaincode, it always throws back the error in the JSON input as shown below.

peer chaincode deploy -p github.com/hyperledger/fabric/examples/chaincode/go/chaincode_example02 -c '{"Function":"init", "Args": ["a","100", "b", "200"]}'

response:

sug@sri-ub:~/go/$ docker exec -it aa413f4c4289 bash
root@aa413f4c4289:/opt/gopath/src/github.com/hyperledger/fabric# peer chaincode deploy -p github.com/hyperledger/fabric/examples/chaincode/go/chaincode_example02 -c '{"Function":"init", "Args": ["a","100", "b", "200"]}'

04:30:55.822 [logging] LoggingInit -> DEBU 001 Setting default logging level to DEBUG for command 'chaincode' Error: Non-empty JSON chaincode parameters must contain exactly 1 key: 'Args'

Please help

Answer 1

The function name should be in Args and all parameters should be base64 encoded.
Instead of:

{"function":"init","args":["a", "1000", "b", "2000"]}}

The arguments for deploy command will look like:

{"args":['aW5pdA==', 'YQ==', 'MTAwMA==', 'Yg==', 'MjAwMA==']}