Implement volumes API for newton

Change-Id: If354e41f0bac0cc1f95ddafb83b82edce3eaf135
Issue-Id: MULTIVIM-22
Signed-off-by: Bin Yang <bin.yang@windriver.com>

2 files changed, 162 insertions, 0 deletions

diff --git a/newton/newton/requests/urls.py b/newton/newton/requests/urls.py
index fd5c988d..510e3810 100644
--- a/newton/newton/requests/urls.py
+++ b/newton/newton/requests/urls.py
@@ -18,6 +18,7 @@ from rest_framework.urlpatterns import format_suffix_patterns
 from views import network
 from views import subnet
 from views import image
+from views import volume
 from views import vport
 from views import limits
 from views import hosts
@@ -30,6 +31,8 @@ urlpatterns = [
         subnet.Subnets.as_view()),
     url(r'^images(/(?P<imageid>[0-9a-zA-Z_-]+))?',
         image.Images.as_view()),
+    url(r'^volumes(/(?P<volumeid>[0-9a-zA-Z_-]+))?',
+        volume.Volumes.as_view()),
     url(r'^ports(/(?P<portid>[0-9a-zA-Z_-]+))?',
         vport.Vports.as_view()),
     url(r'^flavors(/(?P<flavorid>[0-9a-zA-Z_-]+))?',
diff --git a/newton/newton/requests/views/volume.py b/newton/newton/requests/views/volume.py
new file mode 100644
index 00000000..f9df7572
--- /dev/null
+++ b/newton/newton/requests/views/volume.py
@@ -0,0 +1,159 @@
+# Copyright (c) 2017 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 json
+
+from rest_framework import status
+from rest_framework.response import Response
+from rest_framework.views import APIView
+
+from newton.pub.exceptions import VimDriverNewtonException
+
+from util import VimDriverUtils
+
+logger = logging.getLogger(__name__)
+
+
+class Volumes(APIView):
+    service = {'service_type': 'volumev2',
+               'interface': 'public',
+               'region_name': 'RegionOne'}
+    keys_mapping = [
+        ("project_id", "tenantId"),
+        ("created_at", "createTime"),
+        ("size", "volumeSize"),
+        ("volume_type", "volumeType"),
+        ("imageRef", "imageId"),
+        ("availability_zone", "availabilityZone"),
+        ("server_id", "serverId"),
+        ("attachment_id", "attachmentId"),
+    ]
+
+    def get(self, request, vimid="", tenantid="", volumeid=""):
+        logger.debug("Volumes--get::> %s" % request.data)
+        try:
+            # prepare request resource to vim instance
+            query = VimDriverUtils.get_query_part(request)
+            content, status_code = self.get_volumes(query, vimid, tenantid, volumeid)
+            return Response(data=content, status=status_code)
+        except VimDriverNewtonException as e:
+            return Response(data={'error': e.content}, status=e.status_code)
+        except Exception as e:
+            return Response(data={'error': str(e)},
+                            status=status.HTTP_500_INTERNAL_SERVER_ERROR)
+
+    def get_volumes(self, query="", vimid="", tenantid="", volumeid=None):
+        logger.debug("Volumes--get_volumes::> %s,%s" % (tenantid, volumeid))
+
+        # prepare request resource to vim instance
+        req_resouce = "volumes"
+        if volumeid:
+            req_resouce += "/%s" % volumeid
+        else:
+            req_resouce += "/detail"
+            if query:
+                req_resouce += "?%s" % query
+
+        vim = VimDriverUtils.get_vim_info(vimid)
+        sess = VimDriverUtils.get_session(vim, tenantid)
+        resp = sess.get(req_resouce, endpoint_filter=self.service)
+        content = resp.json()
+        vim_dict = {
+            "vimName": vim["name"],
+            "vimId": vim["vimId"],
+            "tenantId": tenantid,
+        }
+        content.update(vim_dict)
+
+        if not volumeid:
+            # convert the key naming in volumes
+            for volume in content["volumes"]:
+                VimDriverUtils.replace_key_by_mapping(volume,
+                                                      self.keys_mapping)
+        else:
+            # convert the key naming in the volume specified by id
+            volume = content.pop("volume", None)
+            VimDriverUtils.replace_key_by_mapping(volume,
+                                                  self.keys_mapping)
+            content.update(volume)
+
+        return content, resp.status_code
+
+    def post(self, request, vimid="", tenantid="", volumeid=""):
+        logger.debug("Volumes--post::> %s" % request.data)
+        try:
+            #check if created already: check name
+            query = "name=%s" % request.data["name"]
+            content, status_code = self.get_volumes(query, vimid, tenantid)
+            existed = False
+            if status_code == 200:
+                for volume in content["volumes"]:
+                    if volume["name"] == request.data["name"]:
+                        existed = True
+                        break
+                    pass
+                if existed == True:
+                    vim_dict = {
+                        "returnCode": 0,
+                    }
+                    volume.update(vim_dict)
+                    return Response(data=volume, status=status_code)
+
+            # prepare request resource to vim instance
+            req_resouce = "volumes"
+
+            vim = VimDriverUtils.get_vim_info(vimid)
+            sess = VimDriverUtils.get_session(vim, tenantid)
+            volume = request.data
+            VimDriverUtils.replace_key_by_mapping(volume,
+                                                  self.keys_mapping, True)
+            req_body = json.JSONEncoder().encode({"volume": volume})
+            resp = sess.post(req_resouce, data=req_body,
+                             endpoint_filter=self.service, headers={"Content-Type": "application/json",
+                             "Accept": "application/json" })
+            resp_body = resp.json()["volume"]
+            VimDriverUtils.replace_key_by_mapping(resp_body, self.keys_mapping)
+            vim_dict = {
+                "vimName": vim["name"],
+                "vimId": vim["vimId"],
+                "tenantId": tenantid,
+                "returnCode": 1,
+            }
+            resp_body.update(vim_dict)
+            return Response(data=resp_body, status=resp.status_code)
+        except VimDriverNewtonException as e:
+            return Response(data={'error': e.content}, status=e.status_code)
+        except Exception as e:
+            return Response(data={'error': str(e)},
+                            status=status.HTTP_500_INTERNAL_SERVER_ERROR)
+        pass
+
+    def delete(self, request, vimid="", tenantid="", volumeid=""):
+        logger.debug("Volumes--delete::> %s" % request.data)
+        try:
+            # prepare request resource to vim instance
+            req_resouce = "volumes"
+            if volumeid:
+                req_resouce += "/%s" % volumeid
+
+            vim = VimDriverUtils.get_vim_info(vimid)
+            sess = VimDriverUtils.get_session(vim, tenantid)
+            resp = sess.delete(req_resouce, endpoint_filter=self.service)
+            return Response(status=resp.status_code)
+        except VimDriverNewtonException as e:
+            return Response(data={'error': e.content}, status=e.status_code)
+        except Exception as e:
+            return Response(data={'error': str(e)},
+                            status=status.HTTP_500_INTERNAL_SERVER_ERROR)
+        pass