HyperLedger-Fabric ChainCode Deployment - Base64 error

问题

I was trying to setup the Hyperledger blocchain on my laptop by following the Windows setup , was able to bring the docker images up and running, but when I try to deploy the examples provided, 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'

I tried in POSTMAN from the HOST machine:

{"jsonrpc":"2.0","method":"deploy","params":{"type":1,"chaincodeID":{"path":"github.com/hyperledger/fabric/examples/chaincode/go/chaincode_example02"},"ctorMsg":{"function":"init","args":["a", "1000", "b", "2000"]}},"id":1}

got the response as

{"jsonrpc":"2.0","error":{"code":-32700,"message":"Parse error","data":"Error unmarshalling chaincode request payload: illegal base64 data at input byte 0"},"

This is similar to the error message and I couldn't resolve this still, creating a new post as advised, please help me fix this issue.

Similar issue reported but that also doesn't answer

回答1:

In latest fabric's version the request's format was changed. 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==']}

Update: Format was changed again. Base64 encoding is not necessary any longer. correct payload in latest Fabric is:

{“args”:['init', 'a', '100', 'b', '100']}

来源：https://stackoverflow.com/questions/39050494/hyperledger-fabric-chaincode-deployment-base64-error

标签

unmarshalling

hyperledger