Ensure UTC datetimes (via intercom#102).

Author: jkeyes

Diff for: intercom/request.py

@@ -2,6 +2,7 @@
 
 from . import errors
 from datetime import datetime
+from pytz import utc
 
 import certifi
 import json
@@ -93,7 +94,8 @@ def set_rate_limit_details(self, resp):
         if remaining:
             rate_limit_details['remaining'] = int(remaining)
         if reset:
-            rate_limit_details['reset_at'] = datetime.fromtimestamp(int(reset))
+            reset_at = datetime.utcfromtimestamp(int(reset)).replace(tzinfo=utc)
+            rate_limit_details['reset_at'] = reset_at
         self.rate_limit_details = rate_limit_details
 
     def raise_errors_on_failure(self, resp):

Diff for: intercom/traits/api_resource.py

@@ -1,10 +1,12 @@
 # -*- coding: utf-8 -*-
 
+import calendar
 import datetime
 import time
 
 from intercom.lib.flat_store import FlatStore
 from intercom.lib.typed_json_deserializer import JsonDeserializer
+from pytz import utc
 
 
 def type_field(attribute):
@@ -29,7 +31,7 @@ def datetime_value(value):
 
 def to_datetime_value(value):
     if value:
-        return datetime.datetime.fromtimestamp(int(value))
+        return datetime.datetime.utcfromtimestamp(int(value)).replace(tzinfo=utc)
 
 
 class Resource(object):
@@ -105,7 +107,7 @@ def __setattr__(self, attribute, value):
         elif self._flat_store_attribute(attribute):
             value_to_set = FlatStore(value)
         elif timestamp_field(attribute) and datetime_value(value):
-            value_to_set = time.mktime(value.timetuple())
+            value_to_set = calendar.timegm(value.utctimetuple())
         else:
             value_to_set = value
         if attribute != 'changed_attributes':

Diff for: requirements.txt

@@ -3,6 +3,7 @@
 #
 certifi
 inflection==0.3.0
+pytz==2016.7
 requests==2.6.0
 urllib3==1.10.2
 six==1.9.0

Diff for: setup.py

@@ -36,6 +36,6 @@
     ],
     packages=find_packages(),
     include_package_data=True,
-    install_requires=["requests", "inflection", "certifi", "six"],
+    install_requires=["requests", "inflection", "certifi", "six", "pytz"],
     zip_safe=False
 )

Diff for: tests/unit/test_user.py

@@ -1,5 +1,6 @@
 # -*- coding: utf-8 -*-
 
+import calendar
 import json
 import mock
 import time
@@ -35,13 +36,13 @@ def it_to_dict_itself(self):
         as_dict = user.to_dict()
         eq_(as_dict["email"], "[email protected]")
         eq_(as_dict["user_id"], "12345")
-        eq_(as_dict["created_at"], time.mktime(created_at.timetuple()))
+        eq_(as_dict["created_at"], calendar.timegm(created_at.utctimetuple()))
         eq_(as_dict["name"], "Jim Bob")
 
     @istest
     def it_presents_created_at_and_last_impression_at_as_datetime(self):
         now = datetime.utcnow()
-        now_ts = time.mktime(now.timetuple())
+        now_ts = calendar.timegm(now.utctimetuple())
         user = User.from_api(
             {'created_at': now_ts, 'last_impression_at': now_ts})
         self.assertIsInstance(user.created_at, datetime)
@@ -63,9 +64,9 @@ def it_presents_a_complete_user_record_correctly(self):
         eq_('Joe Schmoe', user.name)
         eq_('the-app-id', user.app_id)
         eq_(123, user.session_count)
-        eq_(1401970114, time.mktime(user.created_at.timetuple()))
-        eq_(1393613864, time.mktime(user.remote_created_at.timetuple()))
-        eq_(1401970114, time.mktime(user.updated_at.timetuple()))
+        eq_(1401970114, calendar.timegm(user.created_at.utctimetuple()))
+        eq_(1393613864, calendar.timegm(user.remote_created_at.utctimetuple()))
+        eq_(1401970114, calendar.timegm(user.updated_at.utctimetuple()))
 
         Avatar = create_class_instance('Avatar')  # noqa
         Company = create_class_instance('Company')  # noqa
@@ -82,14 +83,14 @@ def it_presents_a_complete_user_record_correctly(self):
         eq_('bbbbbbbbbbbbbbbbbbbbbbbb', user.companies[0].id)
         eq_('the-app-id', user.companies[0].app_id)
         eq_('Company 1', user.companies[0].name)
-        eq_(1390936440, time.mktime(
-            user.companies[0].remote_created_at.timetuple()))
-        eq_(1401970114, time.mktime(
-            user.companies[0].created_at.timetuple()))
-        eq_(1401970114, time.mktime(
-            user.companies[0].updated_at.timetuple()))
-        eq_(1401970113, time.mktime(
-            user.companies[0].last_request_at.timetuple()))
+        eq_(1390936440, calendar.timegm(
+            user.companies[0].remote_created_at.utctimetuple()))
+        eq_(1401970114, calendar.timegm(
+            user.companies[0].created_at.utctimetuple()))
+        eq_(1401970114, calendar.timegm(
+            user.companies[0].updated_at.utctimetuple()))
+        eq_(1401970113, calendar.timegm(
+            user.companies[0].last_request_at.utctimetuple()))
         eq_(0, user.companies[0].monthly_spend)
         eq_(0, user.companies[0].session_count)
         eq_(1, user.companies[0].user_count)
@@ -134,7 +135,7 @@ def it_allows_update_last_request_at(self):
     @istest
     def it_allows_easy_setting_of_custom_data(self):
         now = datetime.utcnow()
-        now_ts = time.mktime(now.timetuple())
+        now_ts = calendar.timegm(now.utctimetuple())
 
         user = User()
         user.custom_attributes["mad"] = 123
@@ -324,7 +325,7 @@ def it_gets_sets_rw_keys(self):
             'name': 'Bob Smith',
             'last_seen_ip': '1.2.3.4',
             'last_seen_user_agent': 'ie6',
-            'created_at': time.mktime(created_at.timetuple())
+            'created_at': calendar.timegm(created_at.utctimetuple())
         }
         user = User(**payload)
         expected_keys = ['custom_attributes']

Diff for: tests/unit/traits/test_api_resource.py

@@ -8,6 +8,7 @@
 from nose.tools import eq_
 from nose.tools import ok_
 from nose.tools import istest
+from pytz import utc
 
 
 class IntercomTraitsApiResource(unittest.TestCase):
@@ -34,7 +35,8 @@ def it_does_not_set_type_on_parsing_json(self):
 
     @istest
     def it_coerces_time_on_parsing_json(self):
-        eq_(datetime.fromtimestamp(1374056196), self.api_resource.created_at)
+        dt = datetime.utcfromtimestamp(1374056196).replace(tzinfo=utc)
+        eq_(dt, self.api_resource.created_at)
 
     @istest
     def it_dynamically_defines_accessors_for_non_existent_properties(self):
@@ -55,7 +57,8 @@ def it_accepts_unix_timestamps_into_dynamically_defined_date_setters(self):
     @istest
     def it_exposes_dates_correctly_for_dynamically_defined_getters(self):
         self.api_resource.foo_at = 1401200468
-        eq_(datetime.fromtimestamp(1401200468), self.api_resource.foo_at)
+        dt = datetime.utcfromtimestamp(1401200468).replace(tzinfo=utc)
+        eq_(dt, self.api_resource.foo_at)
 
     @istest
     def it_throws_regular_error_when_non_existant_getter_is_called_that_is_backed_by_an_instance_variable(self):  # noqa