Add image API for newton

Change-Id: Iad30d138124f1309373f2b716cad024cd691c234
Issue-ID: MULTICLOUD-207
Signed-off-by: Yun Huang <yun.huang@windriver.com>

3 files changed, 231 insertions, 0 deletions

diff --git a/newton/newton/requests/urls.py b/newton/newton/requests/urls.py
index 435ff239..fa15f6e5 100644
--- a/newton/newton/requests/urls.py
+++ b/newton/newton/requests/urls.py
@@ -25,6 +25,8 @@ from newton_base.openoapi import limits
 from newton_base.openoapi import hosts
 from newton_base.openoapi import flavor
 
+from newton.requests.views import imagefile
+
 urlpatterns = [
     url(r'^networks(/(?P<networkid>[0-9a-zA-Z_-]+))?',
         network.Networks.as_view()),
@@ -32,6 +34,9 @@ urlpatterns = [
         subnet.Subnets.as_view()),
     url(r'^images(/(?P<imageid>[0-9a-zA-Z_-]+))?',
         image.Images.as_view()),
+    # image-file
+    url(r'^api/multicloud-newton/v0/(?P<vimid>[0-9a-zA-Z_-]+)/image-file(/(?P<imageid>[0-9a-zA-Z_-]+))?',
+        imagefile.ImageFile.as_view()),
     url(r'^volumes(/(?P<volumeid>[0-9a-zA-Z_-]+))?',
         volume.Volumes.as_view()),
     url(r'^servers(/(?P<serverid>[0-9a-zA-Z_-]+))?',
diff --git a/newton/newton/requests/views/__init__.py b/newton/newton/requests/views/__init__.py
new file mode 100644
index 00000000..afa702d3
--- /dev/null
+++ b/newton/newton/requests/views/__init__.py
@@ -0,0 +1,14 @@
+# Copyright (c) 2017-2018 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.
+
diff --git a/newton/newton/requests/views/imagefile.py b/newton/newton/requests/views/imagefile.py
new file mode 100644
index 00000000..faa1c9cc
--- /dev/null
+++ b/newton/newton/requests/views/imagefile.py
@@ -0,0 +1,212 @@
+# Copyright (c) 2017-2018 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
+import tempfile
+import os
+
+import traceback
+from keystoneauth1.exceptions import HttpError
+from rest_framework import status
+from rest_framework.response import Response
+from rest_framework.views import APIView
+
+from common.exceptions import VimDriverNewtonException
+
+from newton_base.util import VimDriverUtils
+from newton_base.openoapi.image import Images
+
+logger = logging.getLogger(__name__)
+
+class ImageFile(APIView):
+    service = {'service_type': 'image',
+               'interface': 'public'}
+    keys_mapping = [
+        ("project_id", "tenantId"),
+        ("disk_format", "imageType"),
+        ("container_format", "containerFormat")
+    ]
+
+    def get(self, request, vimid="", tenantid="", imageid=""):
+        logger.info("vimid, tenantid, imageid > %s,%s,%s" % (vimid, tenantid, imageid))
+        logger.debug("META, data> %s" % (request.META, request.data))
+
+        if not imageid or imageid == "":
+            msg = {
+                'error': "Operation image/file list is not available"
+            }
+
+            self._logger.warn("RESP with status, msg> %s , %s"
+                                  %(status, status.HTTP_404_NOT_FOUND))
+
+            return Response(data=msg,
+                            status=status.HTTP_404_NOT_FOUND)
+
+        try:
+            # download image
+            status_code = status.HTTP_200_OK
+
+            return Response(data={'error':'to be implemented'}, status=status_code)
+        except VimDriverNewtonException as e:
+            return Response(data={'error': e.content}, status=e.status_code)
+        except HttpError as e:
+            logger.error("HttpError: status:%s, response:%s" % (e.http_status, e.response.json()))
+            return Response(data=e.response.json(), status=e.http_status)
+        except Exception as e:
+            logger.error(traceback.format_exc())
+            return Response(data={'error': str(e)},
+                            status=status.HTTP_500_INTERNAL_SERVER_ERROR)
+
+    def get_images(self, query="", vimid="", tenantid="", imageid=""):
+
+        # prepare request resource to vim instance
+        req_resouce = "v2/images"
+        if imageid:
+            req_resouce += "/%s" % imageid
+        elif 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 imageid:
+            # convert the key naming in images
+            for image in content["images"]:
+                VimDriverUtils.replace_key_by_mapping(image,
+                                                      self.keys_mapping)
+        else:
+            # convert the key naming in the image specified by id
+            #image = content.pop("image", None)
+            VimDriverUtils.replace_key_by_mapping(content,
+                                                  self.keys_mapping)
+            #content.update(image)
+
+        return content, resp.status_code
+
+    def post(self, request, vimid="", tenantid="", imageid=""):
+        logger.info("vimid, tenantid, imageid > %s,%s,%s" % (vimid, tenantid, imageid))
+        logger.debug("META, data> %s" % (request.META, request.data))
+
+
+        if imageid and imageid != "":
+            msg = {
+                'error': "Operation image/file create with image id is not available"
+            }
+
+            self._logger.warn("RESP with status, msg> %s , %s"
+                                  %(status, status.HTTP_404_NOT_FOUND))
+
+            return Response(data=msg,
+                            status=status.HTTP_404_NOT_FOUND)
+
+        try:
+            # get file name
+            image_file = request.FILES['file']
+
+            # check if created already: check name
+            query = "name=%s" % image_file.name
+            content, status_code = Images.get_images(query, vimid, tenantid)
+            existed = False
+            if status_code == 200:
+                for image in content["images"]:
+                    if image["name"] == image_file.name:
+                        existed = True
+                        break
+                if existed == True:
+                    vim_dict = {
+                        "returnCode": 0,
+                    }
+                    return Response(data=image, status=status_code)
+
+            # not exist, download to temp file
+            file_name = image_file.name[:image_file.name.rfind('.')]
+            f = tempfile.NamedTemporaryFile(prefix="django_",
+                                            suffix=file_name,
+                                            delete=False)
+            for chunk in image_file.chunks():
+                f.write(chunk)
+
+            #upload to openstack
+            image_type = image_file.name[image_file.name.find('.') + 1:]
+
+            # prepare request resource to vim instance
+            req_resouce = "v2/images"
+
+            vim = VimDriverUtils.get_vim_info(vimid)
+            sess = VimDriverUtils.get_session(vim, tenantid)
+            image = {}
+            #req_body = json.JSONEncoder().encode({"image": image})
+            req_body = json.JSONEncoder().encode(image)
+            resp = sess.post(req_resouce, data=req_body,
+                             endpoint_filter=self.service)
+            #resp_body = resp.json()["image"]
+            resp_body = resp.json()
+
+            #launch a thread to download image and upload to VIM
+            if resp.status_code == 201:
+                imageid = resp_body["id"]
+                logger.info("upload image: %s" % imageid)
+                self.transfer_image(vimid, tenantid, imageid, f)
+                logger.info("request '%s' success" % (req_resouce))
+            else:
+                logger.info("request '%s' failed with status: %s" % (req_resouce, resp.status_code))
+
+            return Response(data=resp_body, status=resp.status_code)
+        except VimDriverNewtonException as e:
+            return Response(data={'error': e.content}, status=e.status_code)
+        except HttpError as e:
+            logger.error("HttpError: status:%s, response:%s" % (e.http_status, e.response.json()))
+            return Response(data=e.response.json(), status=e.http_status)
+        except Exception as e:
+            logger.error(traceback.format_exc())
+            return Response(data={'error': str(e)},
+                            status=status.HTTP_500_INTERNAL_SERVER_ERROR)
+
+        finally:
+            f.close()
+            os.remove(f.name)
+
+    def transfer_image(self, vimid, tenantid, imageid, imagefd):
+        logger.debug("vimid, tenantid, imageid > %s,%s,%s" % (vimid, tenantid, imageid))
+
+        try:
+            # prepare request resource to vim instance
+            req_resouce = "v2/images/%s/file" % imageid
+
+            vim = VimDriverUtils.get_vim_info(vimid)
+            sess = VimDriverUtils.get_session(vim, tenantid)
+
+            #open imageurl
+            resp = sess.put(req_resouce, endpoint_filter=self.service, data=imagefd.read(),
+                    headers={"Content-Type": "application/octet-stream",
+                             "Accept": ""})
+
+            logger.debug("response status code of transfer_image %s" % resp.status_code)
+            return None
+        except HttpError as e:
+            logger.error("transfer_image, HttpError: status:%s, response:%s" % (e.http_status, e.response.json()))
+            return None
+        except Exception as e:
+            logger.error(traceback.format_exc())
+            logger.error("Failed to transfer_image:%s" % str(e))
+            return None