Upload Program

A program compiled to Wasm can be uploaded to the Vara network. During uploading, it is initialized in the network to be able to send and receive messages with other actors in the network (programs and users).

Use api.program.upload method to create upload_program extrinsic

const code = fs.readFileSync('path/to/program.wasm');

const program = {
  code,
  gasLimit: 1000000,
  value: 1000,
  initPayload: somePayload,
};

try {
  const { programId, codeId, salt, extrinsic } = api.program.upload(
    program,
    meta,
  );
} catch (error) {
  console.error(`${error.name}: ${error.message}`);
}

try {
  await extrinsic.signAndSend(keyring, (event) => {
    console.log(event.toHuman());
  });
} catch (error) {
  console.error(`${error.name}: ${error.message}`);
}

note

For the calculation of the required gas for init message processing should use api.program.calculateGas.initUpload() method.

more info