Update capacity check API

Query the AZinfo from the cache
Relay on the background thread of AZcap Auditing

Change-Id: I064dbc22c71ef25683145ef1c96274ce6ac74c3b
Issue-ID: MULTICLOUD-542
Signed-off-by: Bin Yang <bin.yang@windriver.com>

2 files changed, 107 insertions, 0 deletions

diff --git a/share/starlingx_base/resource/__init__.py b/share/starlingx_base/resource/__init__.py
new file mode 100644
index 00000000..825091ff
--- /dev/null
+++ b/share/starlingx_base/resource/__init__.py
@@ -0,0 +1,10 @@
+# Copyright (c) 2017-2019 Wind River Systems, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at:
+#       http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
diff --git a/share/starlingx_base/resource/capacity.py b/share/starlingx_base/resource/capacity.py
new file mode 100644
index 00000000..fc926d00
--- /dev/null
+++ b/share/starlingx_base/resource/capacity.py
@@ -0,0 +1,97 @@
+# Copyright (c) 2017-2019 Wind River Systems, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import logging
+import traceback
+import json
+
+from django.core.cache import cache
+
+from newton_base.resource import capacity as newton_capacity
+from common.exceptions import VimDriverNewtonException
+from newton_base.util import VimDriverUtils
+
+from keystoneauth1.exceptions import HttpError
+from rest_framework import status
+from rest_framework.response import Response
+from rest_framework.views import APIView
+from common.msapi import extsys
+
+logger = logging.getLogger(__name__)
+
+
+class CapacityCheck(newton_capacity.CapacityCheck):
+    def __init__(self):
+        super(CapacityCheck, self).__init__()
+        self._logger = logger
+
+    def post(self, request, vimid=""):
+        self._logger.info("vimid, data> %s, %s" % (vimid, request.data))
+        self._logger.debug("META> %s" % request.META)
+
+        try:
+            hasEnoughResource = self.get_tenant_cap_info(vimid, request.data)
+            azCapInfo = self.get_az_cap_info(vimid)
+            self._logger.info("RESP with data> result:%s" % hasEnoughResource)
+            return Response(data={'result': hasEnoughResource, 'AZs': azCapInfo}, status=status.HTTP_200_OK)
+        except Exception as e:
+            self._logger.error(traceback.format_exc())
+            return Response(data={'result': False, 'error': str(e)},
+                            status=status.HTTP_500_INTERNAL_SERVER_ERROR)
+
+    def get_az_cap_info(self, vimid):
+        azCapInfo = []
+        viminfo = VimDriverUtils.get_vim_info(vimid)
+        if not viminfo:
+            self._logger.warn("azcap_audit no valid vimid: %s" % vimid)
+            return
+
+        session = VimDriverUtils.get_session(
+            viminfo,
+            tenant_name=viminfo['tenant']
+        )
+        try:
+            # get list of AZ
+            vimAzCacheKey = "cap_azlist_" + vimid
+            vimAzListCacheStr = cache.get(vimAzCacheKey)
+            vimAzListCache = json.loads(vimAzListCacheStr) if vimAzListCacheStr else []
+            for azName in vimAzListCache:
+                azCapCacheKey = "cap_" + vimid + "_" + azName
+                azCapInfoCacheStr = cache.get(azCapCacheKey)
+                azCapInfoCache = json.loads(azCapInfoCacheStr) if azCapInfoCacheStr else None
+
+                azCapInfo["availability-zone-name"] = azName
+                azCapInfo["vCPUAvail"] = azCapInfoCache.get("vcpus", 0) + azCapInfoCache.get("vcpus_used", 0)
+                azCapInfo["vCPUTotal"] = azCapInfoCache.get("vcpus", 0)
+                azCapInfo["MemoryAvail"] = azCapInfoCache.get("vcpus", 0)
+                azCapInfo["MemoryTotal"] = azCapInfoCache.get("vcpus", 0)
+                azCapInfo["StorageAvail"] = azCapInfoCache.get("vcpus", 0)
+                azCapInfo["StorageTotal"] = azCapInfoCache.get("vcpus", 0)
+
+            return azCapInfo
+        except Exception as e:
+            return azCapInfo
+            pass
+
+class APIv1CapacityCheck(CapacityCheck):
+    def __init__(self):
+        super(APIv1CapacityCheck, self).__init__()
+        # self._logger = logger
+
+    def post(self, request, cloud_owner="", cloud_region_id=""):
+        self._logger.info("vimid, data> %s,%s, %s" % (cloud_owner, cloud_region_id, request.data))
+        self._logger.debug("META> %s" % request.META)
+
+        vimid = extsys.encode_vim_id(cloud_owner, cloud_region_id)
+        return super(APIv1CapacityCheck, self).post(request, vimid)