Implementing ckETH payments & transactional fees logic

[Stephen-Kimoi]

ckETH Payments Logic

The following functions have been added in the ck_eth_payments.rs file:

• eth_get_transaction_receipt: this function gets the ckETH transaction receipt from the transaction hash submitted
• verify_transaction: this is the main function as it verifies the transaction has happened on-chain for this particular canister, ideally it checks whether the funds have been sent to this particular canister on-chain
• The rest of the functions inside the ck_eth_payments.rs file are helper functions

Transactional fees logic: The logic for the transactional fees can be found in the transaction_fee.rs file

• store_transaction_fee is responsible for storing all the transactional fees
• get_all_transaction_fees is responsible for getting all transactional fees

The logic has been implemented in the verify_transaction function inside the ck_eth_payments.rs file.

From line 117 :arrow_down:

    // Deduct 0.5% from the amount (transactional fees) 
    let deduction = amount_f64 * 0.005; 
    let _ = transaction_fees::store_transaction_fee(hash.clone(), deduction);
    let new_amount = amount_f64 - deduction; 

    let _ = payments::store_investments(
        0, // change this to farm_id
        new_amount, 
        0, // change this to investor_id
        hash.clone(),  
        "ckETH".to_string()
    ); 

[chriss1525]

This looks awesome! could you work on the merge conflicts first?

[Stephen-Kimoi]

Yes, I’ll work on the conflicts. It seems it’s on the candid files.