I am working on a chaincode where I need to read data previously stored from another one.
They are instantiated on the same channel and I can use them individually to read and write data separately.
You can replicate it using the marble chaincode, installing it with different names on the same peer.
In one of them (A) I implemented invokeChaincode(B), to read data stored by B in this way:
func (chaincode *SimpleChaincode) queryMarblesFromAnotherChaincode(stub shim.ChaincodeStubInterface, args []string) peer.Response {
queryMarble := "queryMarble"
if len(args) != 3 {
return shim.Error("Incorrect number of arguments. Expecting 3")
}
chaincodeName := args[0]
chaincodeArgs := toChaincodeArgs(queryMarble, args[1])
chaincodeChannel := args[2]
response := stub.InvokeChaincode(chaincodeName, chaincodeArgs, chaincodeChannel)
if response.Status != shim.OK {
return shim.Error(fmt.Sprintf("Failed to query chaincode: %s", response.Payload))
}
return shim.Success(response.Payload)
}
Running that method using peer chaincode invoke .. ,
I receive status: 200, but Payload is empty.
Could you advise on what I am doing wrong?
