261 lines
9.4 KiB
Python
261 lines
9.4 KiB
Python
# Copyright 2022 Upstream Data Inc
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import asyncio
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import json
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import ipaddress
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import warnings
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import logging
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from typing import Union
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class APIError(Exception):
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def __init__(self, *args):
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if args:
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self.message = args[0]
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else:
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self.message = None
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def __str__(self):
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if self.message:
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return f"{self.message}"
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else:
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return "Incorrect API parameters."
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class APIWarning(Warning):
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def __init__(self, *args):
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if args:
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self.message = args[0]
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else:
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self.message = None
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def __str__(self):
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if self.message:
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return f"{self.message}"
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else:
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return "Incorrect API parameters."
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class BaseMinerAPI:
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def __init__(self, ip: str, port: int = 4028) -> None:
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# api port, should be 4028
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self.port = port
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# ip address of the miner
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self.ip = ipaddress.ip_address(ip)
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def __new__(cls, *args, **kwargs):
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if cls is BaseMinerAPI:
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raise TypeError(f"Only children of '{cls.__name__}' may be instantiated")
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return object.__new__(cls)
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def get_commands(self) -> list:
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"""Get a list of command accessible to a specific type of API on the miner.
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Returns:
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A list of all API commands that the miner supports.
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"""
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return [
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func
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for func in
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# each function in self
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dir(self)
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if callable(getattr(self, func)) and
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# no __ methods
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not func.startswith("__") and
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# remove all functions that are in this base class
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func
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not in [
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func
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for func in dir(BaseMinerAPI)
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if callable(getattr(BaseMinerAPI, func))
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]
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]
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def _check_commands(self, *commands):
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allowed_commands = self.get_commands()
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return_commands = []
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for command in [*commands]:
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if command in allowed_commands:
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return_commands.append(command)
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else:
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warnings.warn(
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f"""Removing incorrect command: {command}
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If you are sure you want to use this command please use API.send_command("{command}", ignore_errors=True) instead.""",
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APIWarning,
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)
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return return_commands
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async def multicommand(
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self, *commands: str, ignore_x19_error: bool = False
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) -> dict:
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"""Creates and sends multiple commands as one command to the miner.
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Parameters:
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*commands: The commands to send as a multicommand to the miner.
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ignore_x19_error: Whether or not to ignore errors raised by x19 miners when using the "+" delimited style.
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"""
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logging.debug(f"{self.ip}: Sending multicommand: {[*commands]}")
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# make sure we can actually run each command, otherwise they will fail
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commands = self._check_commands(*commands)
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# standard multicommand format is "command1+command2"
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# doesnt work for S19 which uses the backup _x19_multicommand
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command = "+".join(commands)
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try:
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data = await self.send_command(command, x19_command=ignore_x19_error)
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except APIError:
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logging.debug(f"{self.ip}: Handling X19 multicommand.")
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data = await self._x19_multicommand(*command.split("+"))
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logging.debug(f"{self.ip}: Received multicommand data.")
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return data
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async def _x19_multicommand(self, *commands):
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data = None
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try:
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data = {}
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# send all commands individually
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for cmd in commands:
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data[cmd] = []
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data[cmd].append(await self.send_command(cmd, x19_command=True))
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except APIError as e:
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raise APIError(e)
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except Exception as e:
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logging.warning(f"{self.ip}: API Multicommand Error: {e}")
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return data
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async def send_command(
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self,
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command: Union[str, bytes],
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parameters: Union[str, int, bool] = None,
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ignore_errors: bool = False,
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x19_command: bool = False,
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) -> dict:
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"""Send an API command to the miner and return the result.
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Parameters:
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command: The command to sent to the miner.
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parameters: Any additional parameters to be sent with the command.
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ignore_errors: Whether or not to raise APIError when the command returns an error.
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x19_command: Whether this is a command for an x19 that may be an issue (such as a "+" delimited multicommand)
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Returns:
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The return data from the API command parsed from JSON into a dict.
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"""
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try:
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# get reader and writer streams
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reader, writer = await asyncio.open_connection(str(self.ip), self.port)
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# handle OSError 121
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except OSError as e:
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if e.winerror == "121":
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logging.warning("Semaphore Timeout has Expired.")
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return {}
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# create the command
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cmd = {"command": command}
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if parameters:
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cmd["parameter"] = parameters
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# send the command
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writer.write(json.dumps(cmd).encode("utf-8"))
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await writer.drain()
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# instantiate data
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data = b""
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# loop to receive all the data
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try:
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while True:
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d = await reader.read(4096)
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if not d:
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break
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data += d
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except Exception as e:
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logging.warning(f"{self.ip}: API Command Error: - {e}")
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data = self._load_api_data(data)
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# close the connection
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writer.close()
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await writer.wait_closed()
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# check for if the user wants to allow errors to return
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if not ignore_errors:
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# validate the command succeeded
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validation = self._validate_command_output(data)
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if not validation[0]:
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if not x19_command:
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logging.warning(f"{self.ip}: API Command Error: {validation[1]}")
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raise APIError(validation[1])
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return data
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@staticmethod
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def _validate_command_output(data: dict) -> tuple:
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# check if the data returned is correct or an error
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# if status isn't a key, it is a multicommand
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if "STATUS" not in data.keys():
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for key in data.keys():
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# make sure not to try to turn id into a dict
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if not key == "id":
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# make sure they succeeded
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if "STATUS" in data[key][0].keys():
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if data[key][0]["STATUS"][0]["STATUS"] not in ["S", "I"]:
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# this is an error
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return False, f"{key}: " + data[key][0]["STATUS"][0]["Msg"]
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elif "id" not in data.keys():
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if data["STATUS"] not in ["S", "I"]:
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return False, data["Msg"]
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else:
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# make sure the command succeeded
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if type(data["STATUS"]) == str:
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if data["STATUS"] in ["RESTART"]:
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return True, None
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elif data["STATUS"][0]["STATUS"] not in ("S", "I"):
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# this is an error
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if data["STATUS"][0]["STATUS"] not in ("S", "I"):
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return False, data["STATUS"][0]["Msg"]
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return True, None
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@staticmethod
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def _load_api_data(data: bytes) -> dict:
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str_data = None
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try:
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# some json from the API returns with a null byte (\x00) on the end
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if data.endswith(b"\x00"):
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# handle the null byte
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str_data = data.decode("utf-8")[:-1]
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else:
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# no null byte
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str_data = data.decode("utf-8")
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# fix an error with a btminer return having an extra comma that breaks json.loads()
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str_data = str_data.replace(",}", "}")
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# fix an error with a btminer return having a newline that breaks json.loads()
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str_data = str_data.replace("\n", "")
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# fix an error with a bmminer return not having a specific comma that breaks json.loads()
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str_data = str_data.replace("}{", "},{")
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# fix an error with a bmminer return having a specific comma that breaks json.loads()
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str_data = str_data.replace("[,{", "[{")
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# fix an error with Avalonminers returning inf and nan
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str_data = str_data.replace("inf", "0")
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str_data = str_data.replace("nan", "0")
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# fix whatever this garbage from avalonminers is `,"id":1}`
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if str_data.startswith(","):
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str_data = f"{{{str_data[1:]}"
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# parse the json
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parsed_data = json.loads(str_data)
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# handle bad json
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except json.decoder.JSONDecodeError as e:
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raise APIError(f"Decode Error {e}: {str_data}")
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return parsed_data
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