Seed code for OSDF placement adapter

Issue-ID: OPTFRA-46
Change-Id: Ia1e5ecae1052d0ef93d99cf560216822051c438f
Signed-off-by: Sastry Isukapalli <sastry@research.att.com>

1 files changed, 54 insertions, 0 deletions

diff --git a/models/api/common.py b/models/api/common.py
new file mode 100755
index 0000000..0d2d0eb
--- /dev/null
+++ b/models/api/common.py
@@ -0,0 +1,54 @@
+# -------------------------------------------------------------------------

+#   Copyright (c) 2015-2017 AT&T Intellectual Property

+#

+#   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 datetime

+from pprint import pformat

+

+from dateutil.parser import parse

+from schematics.exceptions import ConversionError

+from schematics.models import Model

+from schematics.types import DateTimeType

+

+

+class OSDFModel(Model):

+    """Extends generic model with a couple of extra methods"""

+    def __str__(self):

+        """Return values of object's attributes -- excluding hidden or callable ones"""

+        def _str_format(x):

+            """Coerce as string for some special objects"""

+            return str(x) if isinstance(x, datetime.datetime) else x

+

+        z1 = dict((x, getattr(self, x)) for x in dir(self)

+                  if not x.startswith("_") and not callable(getattr(self, x)))

+        z1 = dict((x, _str_format(y)) for x, y in z1.items())

+        return pformat(z1, depth=4, indent=2, width=1000)

+

+    def __repr__(self):

+        """Return values of object's attributes -- excluding hidden or callable ones"""

+        return self.__str__()

+

+

+class CustomISODateType(DateTimeType):

+    """Schematics doesn't support full ISO, so we use custom one"""

+    def to_native(self, value, context=None):

+        if isinstance(value, datetime.datetime):

+            return value

+        try:

+            return parse(value)

+        except:

+            raise ConversionError(u'Invalid timestamp {}'.format(value))