Smart Contract Code Generation from Platform Specific Model for Hyperledger Go.

Model Driven Architecture (MDA) together with Unified Modelling Language (UML) presents a framework which transfers the emphasis of development from source code to the higher level of abstraction i.e., models. In this paper, we demonstrate the application of MDA principles for generating smart contract code executed on a blockchain. Even though blockchain smart contracts are not in all cases a classic type of object-oriented software, which UML is intended for, we demonstrate the possibility to adapt to this specific implementation platform. MDA Platform Specific Model (PSM) is used as an input for transformation algorithm which maps PSM metamodel elements to Go Chaincode elements and produces Go chaincode. In PSM, UML class and sequence diagrams are used for specifying structural and behavioural aspects of the smart contract. MOFM2T transformation language and Acceleo tool are employed for the implementation of this algorithm. The results of the algorithm execution were demonstrated using example chaincode for machine learning model validation.