fix: exam.view 考试增加redis
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parent
129472c13c
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@ -27,6 +27,8 @@ from apps.exam.parse_word import interpret_text
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import os
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import shutil
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from django.db.models import Q
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from django_redis import get_redis_connection
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import uuid
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# Create your views here.
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EXCEL_PATH = os.path.join(settings.BASE_DIR, "media/default/question.xlsx")
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@ -524,6 +526,7 @@ class ExamViewSet(CreateUpdateCustomMixin, ModelViewSet):
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now = timezone.now()
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if now < exam.open_time or now > exam.close_time:
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raise ParseError('不在考试时间范围')
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ExamRecord.objects.filter(exam=exam, create_by=request.user, is_submited=False).delete()
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tests = ExamRecord.objects.filter(
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exam=exam, create_by=request.user)
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chance_used = tests.count()
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@ -685,6 +688,9 @@ class ExamRecordViewSet(ListModelMixin, DestroyModelMixin, RetrieveModelMixin, G
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courese_ids = [i.id for i in course]
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current_date = now_data.strftime('%Y-%m-%d')
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cer_number = now_data.strftime('%Y%m%d')
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# redis 连接并获取锁
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redis_conn = get_redis_connection("redis")
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identifier = acquire_lock(redis_conn, 'certificate', 10)
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# 查询证明编号创建时间为最后一个
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cer = Certificate.objects.latest('证书编号')
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if cer:
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@ -706,6 +712,11 @@ class ExamRecordViewSet(ListModelMixin, DestroyModelMixin, RetrieveModelMixin, G
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serializer = CertificateSerializer(data=data_dict)
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serializer.is_valid(raise_exception=True)
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serializer.save()
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# 释放锁
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if identifier:
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release_lock(redis_conn, 'certificate', identifier)
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else:
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print("没有找到锁")
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er.took = (now - er.create_time).total_seconds()
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er.end_time = now
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@ -713,3 +724,33 @@ class ExamRecordViewSet(ListModelMixin, DestroyModelMixin, RetrieveModelMixin, G
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er.is_submited = True
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er.save()
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return Response(ExamRecordListSerializer(instance=er).data)
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def acquire_lock(redis_conn, lock_name, ttl):
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identifier = str(uuid.uuid4())
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lock = redis_conn.set(lock_name, identifier, nx=True, ex=ttl)
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return identifier if lock else None
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import redis
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def release_lock(redis_conn, lock_name, identifier):
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with redis_conn.pipeline() as pipe:
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try:
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while True:
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try:
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pipe.watch(lock_name)
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# 使用 multi/exec 模式来确保原子性
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if pipe.get(lock_name) == identifier:
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pipe.multi()
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pipe.delete(lock_name)
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pipe.execute()
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return True
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# 如果锁已经被修改，取消监视
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pipe.unwatch()
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return False
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except redis.exceptions.WatchError:
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# 如果在监视期间锁被修改，重试
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continue
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except redis.exceptions.RedisError as e:
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print(f"Error releasing lock: {e}")
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return False
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@ -196,14 +196,14 @@ AUTHENTICATION_BACKENDS = (
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# 缓存配置
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CACHES = {
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# "default": {
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# "BACKEND": "django_redis.cache.RedisCache",
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# "LOCATION": "redis://127.0.0.1:6379/9",
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# "OPTIONS": {
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# "CLIENT_CLASS": "django_redis.client.DefaultClient",
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# # "PICKLE_VERSION": -1
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# }
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# }
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"redis": {
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"BACKEND": "django_redis.cache.RedisCache",
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"LOCATION": "redis://127.0.0.1:6379/1",
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"OPTIONS": {
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"CLIENT_CLASS": "django_redis.client.DefaultClient",
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# "PICKLE_VERSION": -1
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}
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},
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'default': {
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'BACKEND': 'django.core.cache.backends.filebased.FileBasedCache',
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'LOCATION': os.path.join(BASE_DIR, 'temp'),
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@ -1,27 +1,27 @@
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-----BEGIN RSA PRIVATE KEY-----
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MIIEogIBAAKCAQEArs+Efx2qnceCl9/Z/SdzTxcIsasN0+mhCoINJV8wrBAeiyHU
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-----END RSA PRIVATE KEY-----
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@ -1,36 +1,36 @@
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-----BEGIN CERTIFICATE-----
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MIIF+DCCBGCgAwIBAgIQexRxjj+11hqqdmSmDPdOlzANBgkqhkiG9w0BAQwFADBZ
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T/AyqWTtS2fzvbc6RjpuwPdkR4MyFI0KfKDWuEhUma9aJRhXKLVG1iJOqzuVpE7l
|
||||
mYXq4yla3SlY3kfTR9rT+2KKG4TYxJCHkimx9rkBD5P/RGAAwH9IJs2UkCGiA+3i
|
||||
VcNeUsrMsOQ9qFk7vtDgBCN+mx1pt6/gWGZKsyjZtmqzyVoCp8dv0AE/2skpYSSQ
|
||||
1QXMJIK/uyvNRgPfQqbXaxhZq6loukIydIIJEAXit8SBnFaKvYXluiywModpYXBP
|
||||
85rtLnuVjgg615uSEkaI7okU74RgN0IFI7q2sOP1j5YeSX0srQTwV5Aw4nhrWA==
|
||||
-----END CERTIFICATE-----
|
||||
-----BEGIN CERTIFICATE-----
|
||||
MIIFBzCCA++gAwIBAgIRALIM7VUuMaC/NDp1KHQ76aswDQYJKoZIhvcNAQELBQAw
|
||||
|
|
|
|||
Loading…
Reference in New Issue