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api.py
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api.py
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# Copyright (c) 2015-2018 Mark Hamilton, All rights reserved
"""
Holds views for tests results.
"""
# from django.shortcuts import render
import logging
from rest_framework.renderers import JSONRenderer
from django.http import HttpResponse
from django.http import JsonResponse
from django.views.decorators.csrf import csrf_exempt
from django.core.exceptions import PermissionDenied
from testpooldb.models import Pool
from testpooldb.models import Resource
from testpool_pool.views import PoolStats
from testpool_pool.serializers import PoolSerializer
from testpool_pool.serializers import PoolStatsSerializer
from testpool_pool.serializers import ResourceSerializer
import testpool.core.algo
LOGGER = logging.getLogger("django.testpool")
class JSONResponse(HttpResponse):
"""
An HttpResponse that renders its content into JSON.
"""
def __init__(self, data, **kwargs):
content = JSONRenderer().render(data)
kwargs['content_type'] = 'application/json'
super(JSONResponse, self).__init__(content, **kwargs)
@csrf_exempt
def pool_list(request):
"""
List all code snippets, or create a new snippet.
"""
LOGGER.info("testpool_pool.api.pool_list")
if request.method == 'GET':
pools = [PoolStats(item) for item in Pool.objects.all()]
serializer = PoolStatsSerializer(pools, many=True)
return JSONResponse(serializer.data)
else:
msg = "pool_list method %s unsupported" % request.method
logging.error(msg)
return JsonResponse({"msg": msg}, status=405)
@csrf_exempt
def pool_detail(request, pool_name):
""" Retrieve specific pool. """
LOGGER.info("testpool_pool.api.pool_detail")
try:
pool = Pool.objects.get(name=pool_name)
except Pool.DoesNotExist:
msg = "pool %s not found" % pool_name
logging.error(msg)
return JsonResponse({"msg": msg}, status=404)
if request.method == "GET":
serializer = PoolSerializer(pool)
return JSONResponse(serializer.data)
else:
msg = "pool_detail method %s unsupported" % request.method
logging.error(msg)
return JsonResponse({"msg": msg}, status=405)
@csrf_exempt
def pool_acquire(request, pool_name):
"""
Ac_seconds quire a Resource that is ready.
@param expiration The mount of time in seconds before entry expires.
"""
LOGGER.info("pool_acquire %s", pool_name)
if request.method == 'GET':
expiration_seconds = request.GET.get("expiration", 10 * 60)
expiration_seconds = int(expiration_seconds)
try:
pool = Pool.objects.get(name=pool_name)
except Pool.DoesNotExist:
msg = "pool %s not found" % pool_name
logging.error(msg)
return JsonResponse({"msg": msg}, status=403)
LOGGER.info("pool_acquire found %s", pool_name)
try:
rsrcs = pool.resource_set.filter(status=Resource.READY)
if rsrcs.count() == 0:
msg = "pool_acquire %s all resources taken" % pool_name
LOGGER.info(msg)
return JsonResponse({"msg": msg}, status=403)
##
# Pick the first resource.
rsrc = rsrcs[0]
##
except Resource.DoesNotExist:
msg = "pool %s empty" % pool_name
LOGGER.error(msg)
return JsonResponse({"msg": msg}, status=403)
##
# assert resource defined.
rsrc.transition(Resource.RESERVED, Resource.ACTION_DESTROY,
expiration_seconds)
##
LOGGER.info("pool %s resource acquired %s", pool_name, rsrc.name)
serializer = ResourceSerializer(rsrc)
return JSONResponse(serializer.data)
##
else:
msg = "pool_acquire method %s unsupported" % request.method
logging.error(msg)
return JsonResponse({"msg": msg}, status=405)
@csrf_exempt
def pool_release(request, rsrc_id):
""" Release Resource. """
LOGGER.info("testpool_pool.api.pool_release %s", rsrc_id)
if request.method == 'GET':
try:
rsrc = Resource.objects.get(id=rsrc_id)
except Resource.DoesNotExist:
msg = "pool for %s not found" % rsrc_id
logging.error(msg)
return JsonResponse({"msg": msg}, status=403)
if rsrc.status != Resource.RESERVED:
raise PermissionDenied("Resource %s is not reserved" % rsrc_id)
##
# assert rsrc defined.
rsrc.transition(Resource.PENDING, Resource.ACTION_DESTROY, 1)
##
content = {"detail": "Resource %s released" % rsrc_id}
return JSONResponse(content)
else:
msg = "pool_release method %s unsupported" % request.method
logging.error(msg)
return JsonResponse({"msg": msg}, status=405)
@csrf_exempt
def pool_remove(request, pool_name):
""" Release Resource. """
LOGGER.info("testpool_pool.api.pool_remove %s", pool_name)
if request.method == 'DELETE':
immediate = request.GET.get("immediate", False)
try:
testpool.core.algo.pool_remove(pool_name, immediate)
content = {"detail": "pool %s removed" % pool_name}
return JSONResponse(content)
except Pool.DoesNotExist:
msg = "pool %s not found" % pool_name
logging.error(msg)
return JsonResponse({"msg": msg}, status=403)
except Exception as arg:
logging.error(arg)
return JsonResponse({"msg": arg}, status=500)
else:
msg = "pool_release method %s unsupported" % request.method
logging.error(msg)
return JsonResponse({"msg": msg}, status=405)
@csrf_exempt
def pool_add(request, pool_name):
""" Add a pool . """
LOGGER.info("testpool_pool.api.pool_add %s", pool_name)
if request.method != 'POST':
msg = "pool_add method %s unsupported" % request.method
logging.error(msg)
return JsonResponse({"msg": msg}, status=405)
if "resource_max" not in request.GET:
msg = "pool_add requires resource_max"
return JsonResponse({"msg": msg}, status=404)
if "template_name" not in request.GET:
msg = "pool_add requires template_name"
return JsonResponse({"msg": msg}, status=404)
if "connection" not in request.GET:
msg = "pool_add requires connection"
return JsonResponse({"msg": msg}, status=404)
if "product" not in request.GET:
msg = "pool_add requires product"
return JsonResponse({"msg": msg}, status=404)
resource_max = request.GET["resource_max"]
template_name = request.GET["template_name"]
connection = request.GET["connection"]
product = request.GET["product"]
try:
resource_max = int(resource_max)
pool1 = testpool.core.algo.pool_add(connection, product, pool_name,
resource_max, template_name)
serializer = PoolSerializer(pool1)
return JSONResponse(serializer.data)
except Pool.DoesNotExist, arg:
logging.exception(arg)
msg = "pool %s not found" % pool_name
logging.error(msg)
return JsonResponse({"msg": msg}, status=403)
except Exception, arg:
logging.exception(arg)
logging.error(arg)
return JsonResponse({"msg": arg}, status=500)