mirror of https://github.com/zulip/zulip.git
66 lines
2.1 KiB
Python
66 lines
2.1 KiB
Python
from django.db.migrations.recorder import MigrationRecorder
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from django.http import HttpRequest, HttpResponse
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from django.utils.crypto import get_random_string
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from django.utils.translation import gettext as _
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from pika import BlockingConnection
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from zerver.lib.cache import cache_delete, cache_get, cache_set
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from zerver.lib.exceptions import ServerNotReadyError
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from zerver.lib.queue import get_queue_client
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from zerver.lib.redis_utils import get_redis_client
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from zerver.lib.response import json_success
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def check_database() -> None:
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try:
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if not MigrationRecorder.Migration.objects.exists():
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raise ServerNotReadyError(_("Database is empty")) # nocoverage
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except ServerNotReadyError: # nocoverage
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raise
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except Exception: # nocoverage
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raise ServerNotReadyError(_("Cannot query postgresql"))
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def check_rabbitmq() -> None: # nocoverage
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try:
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conn = get_queue_client().connection
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if conn is None:
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raise ServerNotReadyError(_("Cannot connect to rabbitmq"))
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assert isinstance(conn, BlockingConnection)
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conn.process_data_events()
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except ServerNotReadyError:
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raise
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except Exception:
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raise ServerNotReadyError(_("Cannot query rabbitmq"))
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def check_redis() -> None:
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try:
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get_redis_client().ping()
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except Exception: # nocoverage
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raise ServerNotReadyError(_("Cannot query redis"))
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def check_memcached() -> None:
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try:
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roundtrip_key = "health_check_" + get_random_string(32)
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roundtrip_value = get_random_string(32)
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cache_set(roundtrip_key, roundtrip_value)
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got_value = cache_get(roundtrip_key)[0]
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if got_value != roundtrip_value:
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raise ServerNotReadyError(_("Cannot write to memcached")) # nocoverage
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cache_delete(roundtrip_key)
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except ServerNotReadyError: # nocoverage
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raise
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except Exception: # nocoverage
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raise ServerNotReadyError(_("Cannot query memcached"))
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def health(request: HttpRequest) -> HttpResponse:
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check_database()
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check_rabbitmq()
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check_redis()
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check_memcached()
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return json_success(request)
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