how to call hyperledger composer written chaincode from hyperledger fabric java sdk

1
votes

I have written my chaincode using hyperledger-composer and I have a function called Modify. I am trying to call this function from my java application using the hyperledger java sdk but I can't figure out how to call this function. I am getting the following error:

Sending proposal to xxx.xxx.com failed because of: gRPC failure=Status{code=UNKNOWN, description=error executing chaincode: transaction returned with failure: Error: Unsupported function "com.xxx.xxx.Modify" with arguments...

My question is how can I figure out the name of the function composer is creating in the chaincode when I create this modify transaction from composer.

1
hyperledger-fabrichyperledger-composer

1 Answers

2
votes

If you used Hyperledger Composer to create your business network (.bna), you have to use the Hyperledger Composer SDK in you client application in order to interact with the blockchain (API Reference).

Otherwise, you can use composer-rest-server (official documentation) to expose APIs of the business network.

Up to now, I don't think is available any Java SDK for Hyperledger Composer.