Support for eth_createAccessList

[pipermerriam]

What was wrong?

Unsure if this is standardized but, support for eth_createAccessList would be useful

https://geth.ethereum.org/docs/rpc/ns-eth#eth_createaccesslist

How can it be fixed?

Add support for that JSON-RPC endpoint either in the w3.geth namespace or under w3.eth if it is standardized (I think it is)

[wiseaidev]

Hey there, I think I can work on dis issue. However, after digging a bit deeper, I realized there is a bit of struggle in implementing the formatter for the response. From what I understood from the eip-2930 example, I think it should be something along these lines:

ACCESS_LIST_FORMATTER = apply_list_to_array_formatter({
    'address': to_checksum_address,
    'storageKeys': apply_list_to_array_formatter(to_hexbytes(32))
})

ACCESS_LIST_RESPONCE_FORMATTER = apply_formatters_to_dict({
    "accessList": ACCESS_LIST_FORMATTER,
    "gasUsed": to_integer_if_hex,
})

And under the Eth namespace formatters, we need to add the following line:

    RPC.eth_createAccessList: ACCESS_LIST_RESPONCE_FORMATTER,

Similarly, for the request, the formatter might look like:

    RPC.eth_createAccessList: apply_formatter_at_index(transaction_param_formatter, 0),

Lemme know whether or not I misinterpreted the format of the req/res to continue working on dis issue.

Regards.

[kclowes]

closed via #2381