There are discrete pieces of health information that, if stored on-chain may have a huge impact on operational efficiency, availability and patient safety. Vaccination and allergy information are typical examples. vac-chain is a prototype of an on-chain storage of vaccination information on Ethereum blockchain using smart contracts in solidity using the truffle Drizzle box (React/Redux). This may be extended for similar use cases in medicine.
First ensure you are in a new and empty directory.
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Run the
unboxcommand vianpxand skip to step 3. This will install all necessary dependencies. A Create-React-App is generated in theappdirectory.npx truffle unbox drizzle
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Alternatively, you can install Truffle globally and run the
unboxcommand.npm install -g truffle truffle unbox drizzle
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Run the development console.
truffle develop
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Compile and migrate the smart contracts. Note inside the development console we don't preface commands with
truffle.compile migrate
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In the
appdirectory, we run the React app. Smart contract changes must be manually recompiled and migrated.// in another terminal (i.e. not in the truffle develop prompt) cd app npm run start
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Truffle can run tests written in Solidity or JavaScript against your smart contracts. Note the command varies slightly if you're in or outside of the development console.
// inside the development console test // outside the development console truffle test
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Jest is included for testing React components. Compile your contracts before running Jest, or you may receive some file not found errors.
// ensure you are inside the app directory when running this npm run test
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To build the application for production, use the build script. A production build will be in the
app/buildfolder.// ensure you are inside the app directory when running this npm run build
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