Sistema de Apoio ao Processo Legislativo
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import logging
import traceback
from django.http import HttpResponse, JsonResponse
from django.utils import timezone
from rest_framework.views import APIView
from rest_framework.response import Response
from rest_framework import status
from django.conf import settings
from sapl.health import check_app, check_db, check_cache
COMMON_HEADERS = {
"Cache-Control": "no-store, no-cache, must-revalidate, max-age=0",
"Pragma": "no-cache",
}
def _format_plain(ok: bool) -> HttpResponse:
return HttpResponse("OK\n" if ok else "UNHEALTHY\n",
status=status.HTTP_200_OK if ok else status.HTTP_503_SERVICE_UNAVAILABLE,
content_type="text/plain")
class HealthzView(APIView):
authentication_classes = []
permission_classes = []
logger = logging.getLogger(__name__)
def get(self, request):
try:
ok, msg, ms = check_app()
payload = {
"status": "OK" if ok else "UNHEALTHY",
"checks": {"app": {"ok": ok, "latency_ms": round(ms, 1), "error": msg}},
"version": settings.SAPL_VERSION,
"time": timezone.now().isoformat(),
}
if request.query_params.get("fmt") == "txt":
return _format_plain(ok)
return Response(payload,
status=status.HTTP_200_OK if ok else status.HTTP_503_SERVICE_UNAVAILABLE,
headers=COMMON_HEADERS)
except Exception as e:
self.logger.error(traceback.format_exc())
return "An internal error has occurred!"
class ReadyzView(APIView):
authentication_classes = []
permission_classes = []
logger = logging.getLogger(__name__)
def get(self, request):
try:
checks = {
"app": check_app(),
"db": check_db(),
"cache": check_cache(),
}
payload_checks = {
name: {"ok": r[0], "latency_ms": round(r[2], 1), "error": r[1]}
for name, r in checks.items()
}
ok = all(r[0] for r in checks.values())
payload = {
"status": "ok" if ok else "unhealthy",
"checks": payload_checks,
"version": settings.SAPL_VERSION,
"time": timezone.now().isoformat(),
}
if request.query_params.get("fmt") == "txt":
return _format_plain(ok)
return Response(payload,
status=status.HTTP_200_OK if ok else status.HTTP_503_SERVICE_UNAVAILABLE,
headers=COMMON_HEADERS)
except Exception as e:
self.logger.error(traceback.format_exc())
return "An internal error has occurred!"
class AppzVersionView(APIView):
authentication_classes = []
permission_classes = []
logger = logging.getLogger(__name__)
def get(self, request):
try:
payload = {
'name': 'SAPL',
'description': 'Sistema de Apoio ao Processo Legislativo',
'version': settings.SAPL_VERSION,
}
if request.query_params.get("fmt") == "txt":
return HttpResponse(f"{payload['version']} {payload['name']}",
status=status.HTTP_200_OK,
content_type="text/plain")
return Response(payload,
status=status.HTTP_200_OK,
headers=COMMON_HEADERS)
except Exception as e:
self.logger.error(traceback.format_exc())
return "An internal error has occurred!"