Python construct_web3_formatting_middleware示例

示例#1

BLOCK_VALIDATORS = {
    'extraData': check_extradata_length,
}

block_validator = apply_formatter_if(
    is_not_null, apply_formatters_to_dict(BLOCK_VALIDATORS))


@curry
def chain_id_validator(web3):
    return compose(apply_formatter_at_index(transaction_normalizer, 0),
                   transaction_param_validator(web3))


def build_validators_with_web3(w3):
    return dict(
        request_formatters={
            'eth_sendTransaction': chain_id_validator(w3),
            'eth_estimateGas': chain_id_validator(w3),
            'eth_call': chain_id_validator(w3),
        },
        result_formatters={
            'eth_getBlockByHash': block_validator,
            'eth_getBlockByNumber': block_validator,
        },
    )


validation_middleware = construct_web3_formatting_middleware(
    build_validators_with_web3)

示例#2

文件： validation.py 项目： fubuloubu/web3.py

# -- sync -- #


def build_method_validators(w3: "Web3", method: RPCEndpoint) -> FormattersDict:
    request_formatters = {}
    if RPCEndpoint(method) in METHODS_TO_VALIDATE:
        w3_chain_id = w3.eth.chain_id
        for method in METHODS_TO_VALIDATE:
            request_formatters[method] = _chain_id_validator(w3_chain_id)

    return _build_formatters_dict(request_formatters)


validation_middleware = construct_web3_formatting_middleware(
    build_method_validators)


# -- async --- #
async def async_build_method_validators(async_w3: "Web3",
                                        method: RPCEndpoint) -> FormattersDict:
    request_formatters: Formatters = {}
    if RPCEndpoint(method) in METHODS_TO_VALIDATE:
        w3_chain_id = await async_w3.eth.chain_id  # type: ignore
        for method in METHODS_TO_VALIDATE:
            request_formatters[method] = _chain_id_validator(w3_chain_id)

    return _build_formatters_dict(request_formatters)


async def async_validation_middleware(make_request: Callable[