import json import requests import hashlib import logging from urllib.parse import urljoin from django.db import transaction from django.db.models import F from django_redis import get_redis_connection from django.core.cache import cache from judge.languages import languages from account.models import User from conf.models import JudgeServer, JudgeServerToken from problem.models import Problem, ProblemRuleType, ContestProblem from contest.models import ContestRuleType, ACMContestRank, OIContestRank from submission.models import JudgeStatus, Submission logger = logging.getLogger(__name__) WAITING_QUEUE = "waiting_queue" # 继续处理在队列中的问题 def process_pending_task(redis_conn): if redis_conn.llen(WAITING_QUEUE): # 防止循环引入 from submission.tasks import judge_task data = json.loads(redis_conn.rpop(WAITING_QUEUE)) judge_task.delay(**data) class JudgeDispatcher(object): def __init__(self, submission_id, problem_id): token = JudgeServerToken.objects.first().token self.token = hashlib.sha256(token.encode("utf-8")).hexdigest() self.redis_conn = get_redis_connection("JudgeQueue") self.submission = Submission.objects.get(pk=submission_id) if self.submission.contest_id: self.problem = ContestProblem.objects.select_related("contest")\ .get(_id=problem_id, contest_id=self.submission.contest_id) self.contest = self.problem.contest else: self.problem = Problem.objects.get(pk=problem_id) def _request(self, url, data=None): kwargs = {"headers": {"X-Judge-Server-Token": self.token, "Content-Type": "application/json"}} if data: kwargs["data"] = json.dumps(data) try: return requests.post(url, **kwargs).json() except Exception as e: logger.error(e.with_traceback()) @staticmethod def choose_judge_server(): with transaction.atomic(): # TODO: use more reasonable way servers = JudgeServer.objects.select_for_update().all().order_by("task_number") servers = [s for s in servers if s.status == "normal"] if servers: server = servers[0] server.used_instance_number = F("task_number") + 1 server.save() return server @staticmethod def release_judge_res(judge_server_id): with transaction.atomic(): # 使用原子操作, 同时因为use和release中间间隔了判题过程,需要重新查询一下 server = JudgeServer.objects.select_for_update().get(id=judge_server_id) server.used_instance_number = F("task_number") - 1 server.save() def judge(self, output=False): server = self.choose_judge_server() if not server: data = {"submission_id": self.submission.id, "problem_id": self.problem.id} self.redis_conn.lpush(WAITING_QUEUE, json.dumps(data)) return sub_config = list(filter(lambda item: self.submission.language == item["name"], languages))[0] spj_config = {} if self.problem.spj_code: for lang in languages: if lang["name"] == self.problem.spj_language: spj_config = lang["spj"] break data = { "language_config": sub_config["config"], "src": self.submission.code, "max_cpu_time": self.problem.time_limit, "max_memory": 1024 * 1024 * self.problem.memory_limit, "test_case_id": self.problem.test_case_id, "output": output, "spj_version": self.problem.spj_version, "spj_config": spj_config.get("config"), "spj_compile_config": spj_config.get("compile"), "spj_src": self.problem.spj_code } self.submission.result = JudgeStatus.JUDGING self.submission.save() # TODO: try catch resp = self._request(urljoin(server.service_url, "/judge"), data=data) self.submission.info = resp if resp["err"]: self.submission.result = JudgeStatus.COMPILE_ERROR self.submission.statistic_info["err_info"] = resp["data"] else: # 用时和内存占用保存为多个测试点中最长的那个 self.submission.statistic_info["time_cost"] = max([x["cpu_time"] for x in resp["data"]]) self.submission.statistic_info["memory_cost"] = max([x["memory"] for x in resp["data"]]) error_test_case = list(filter(lambda case: case["result"] != 0, resp["data"])) # 多个测试点全部正确则AC，否则 ACM模式下取第一个错误的测试点的状态, OI模式若全部错误则取第一个错误测试点状态，否则为部分正确 if not error_test_case: self.submission.result = JudgeStatus.ACCEPTED elif self.problem.rule_type == ProblemRuleType.ACM or len(error_test_case) == len(resp["data"]): self.submission.result = error_test_case[0]["result"] else: self.submission.result = JudgeStatus.PARTIALLY_ACCEPTED self.submission.save() self.release_judge_res(server.id) if self.submission.contest_id: self.update_contest_problem_status() self.update_contest_rank() else: self.update_problem_status() # 至此判题结束，尝试处理任务队列中剩余的任务 process_pending_task(self.redis_conn) def compile_spj(self, service_url, src, spj_version, spj_compile_config, test_case_id): data = {"src": src, "spj_version": spj_version, "spj_compile_config": spj_compile_config, "test_case_id": test_case_id} return self._request(urljoin(service_url, "compile_spj"), data=data) def update_problem_status(self): with transaction.atomic(): # 更新problem计数器 self.problem = Problem.objects.select_for_update().get(id=self.problem.id) self.problem.add_submission_number() if self.submission.result == JudgeStatus.ACCEPTED: self.problem.add_ac_number() # 更新user profile user = User.objects.select_for_update().get(id=self.submission.user_id) user_profile = user.userprofile user_profile.add_submission_number() problems_status = user_profile.problems_status if "problems" not in problems_status: problems_status["problems"] = {} # 之前状态不是ac, 现在是ac了 需要更新用户ac题目数量计数器,这里需要判重 if problems_status["problems"].get(str(self.problem.id), JudgeStatus.WRONG_ANSWER) != JudgeStatus.ACCEPTED: if self.submission.result == JudgeStatus.ACCEPTED: user_profile.add_accepted_problem_number() problems_status["problems"][str(self.problem.id)] = JudgeStatus.ACCEPTED else: problems_status["problems"][str(self.problem.id)] = JudgeStatus.WRONG_ANSWER user_profile.problems_status = problems_status user_profile.save(update_fields=["problems_status"]) def update_contest_problem_status(self): with transaction.atomic(): problem = ContestProblem.objects.select_for_update().get(id=self.problem.id) problem.add_submission_number() if self.submission.result == JudgeStatus.ACCEPTED: problem.add_ac_number() def update_contest_rank(self): if self.contest.real_time_rank: cache.delete(str(self.contest.id) + "_rank_cache") with transaction.atomic(): if self.contest.rule_type == ContestRuleType.ACM: acm_rank, _ = ACMContestRank.objects.select_for_update(). \ get_or_create(user_id=self.submission.user_id, contest=self.contest) self._update_acm_contest_rank(acm_rank) else: oi_rank, _ = OIContestRank.objects.select_for_update(). \ get_or_create(user_id=self.submission.user_id, contest=self.contest) self._update_oi_contest_rank(oi_rank) def _update_acm_contest_rank(self, rank): info = rank.submission_info.get(str(self.submission.problem_id)) # 因前面更改过，这里需要重新获取 problem = ContestProblem.objects.get(contest_id=self.contest.id, _id=self.problem._id) # 此题提交过 if info: if info["is_ac"]: return rank.total_submission_number += 1 if self.submission.result == JudgeStatus.ACCEPTED: rank.total_ac_number += 1 info["is_ac"] = True info["ac_time"] = (self.submission.create_time - self.contest.start_time).total_seconds() rank.total_time += info["ac_time"] + info["error_number"] * 20 * 60 if problem.total_accepted_number == 1: info["is_first_ac"] = True else: info["error_number"] += 1 # 第一次提交 else: rank.total_submission_number += 1 info = {"is_ac": False, "ac_time": 0, "error_number": 0, "is_first_ac": False} if self.submission.result == JudgeStatus.ACCEPTED: rank.total_ac_number += 1 info["is_ac"] = True info["ac_time"] = (self.submission.create_time - self.contest.start_time).total_seconds() rank.total_time += info["ac_time"] if problem.total_accepted_number == 1: info["is_first_ac"] = True else: info["error_number"] = 1 rank.submission_info[str(self.submission.problem_id)] = info rank.save() def _update_oi_contest_rank(self, rank): pass