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Fee Controller

Pay transaction fees for other accounts.

High level overview of creating paying transaction fees for another user:

Context​

Alice is generating transaction proofs that will be sent to the sequencer by Bob. Bob will pay the transaction fees to process Alice's transaction proofs.

Process​

  1. Alice sets up the transaction creation controller.
    1. registerController = aztecSdk.createRegisterController(...)
  2. Alice generates the transaction proof using the controller.
    1. registerController.createProof()
  3. Alice exports the proof data and sends it to Bob.
    1. proofTxs = registerController.exportProofTxs()
  4. Bob queries the Aztec client for the current transaction fee rate.
    1. fee = aztecSdk.getProofTxsFees(assetId, proofTxs)
  5. Bob creates a FeeController, generates the proof and sends the transactions to the sequencer.
    1. feeController = aztecSdk.createFeeController(alicesUserId, bobsSigner, proofTxs, fee)
    2. feeController.createProof()
    3. feeController.send()