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# Copyright (c) 2012 Canonical Ltd
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public
# License along with this program. If not, see
# <http://www.gnu.org/licenses/>.
__metaclass__ = type
import datetime
from email.utils import formatdate
import os
from tempfile import _RandomNameSequence
import time
import unittest
from dateutil.tz import (
tzoffset,
tzutc,
)
from pycassa.util import convert_uuid_to_time
from grackle.model import (
CassandraConnection,
_parse_message,
)
TEMPLATE_MESSAGE = """\
From: sysadmin@example.com
To: developer@example.com
Subject: Everything is broken
Date: {date}
Message-Id: {id}
Help, everything has just broken.
"""
TEST_MESSAGE = TEMPLATE_MESSAGE.format(
date='Sat, 1 Jan 2000 11:02:34 +1100',
id='<aaaaaaaaaaaaa@example.com>')
class TestParseMessage(unittest.TestCase):
def test_works(self):
# _parse_message extracts interesting fields. It also parses the
# date and returns it separately.
date, msg = _parse_message(TEST_MESSAGE)
self.assertEqual('sysadmin@example.com', msg['from'])
self.assertEqual('developer@example.com', msg['to'])
self.assertEqual('Everything is broken', msg['subject'])
self.assertEqual('2000-01-01T11:02:34+11:00', msg['date'])
self.assertEqual('<aaaaaaaaaaaaa@example.com>', msg['message-id'])
self.assertEqual(
datetime.datetime(
2000, 1, 1, 11, 2, 34, tzinfo=tzoffset('', 39600)),
date)
class TestAddMessage(unittest.TestCase):
def test_add_message(self):
c = CassandraConnection(
os.environ['GRACKLE_TEST_KEYSPACE'], ['localhost:9160'])
archive = next(_RandomNameSequence())
# Write the message out to Cassandra, and read it back in.
key = c.add_message(archive, TEST_MESSAGE)
cmsg = c.messages.get(key)
# The archive should contain a single message, a reference to
# our new key.
archive_messages = c.archive_messages.get(archive).items()
self.assertEqual(1, len(archive_messages))
self.assertEqual(key, archive_messages[0][1])
# The key in archive_message is a TimeUUID for the Date field in
# the message. There is no UTC equivalent of time.mktime, so we
# must subtract the offset.
utctime = time.mktime(datetime.datetime(
2000, 1, 1, 0, 2, 34, tzinfo=tzutc()).timetuple()) - time.timezone
self.assertEqual(
utctime,
convert_uuid_to_time(archive_messages[0][0]))
# The stored message contains the full original text of the
# message, as well as interesting fields parsed out.
self.assertEqual(TEST_MESSAGE, cmsg['content'])
parsed_message = _parse_message(TEST_MESSAGE)[1]
for key, value in parsed_message.iteritems():
self.assertEqual(value, cmsg[key])
class TestGetMessages(unittest.TestCase):
def assertMessages(self, expected_ids, messages):
expected_msgids = [
'<message%d@example.com>' % id for id in expected_ids]
actual_msgids = [msg['message-id'] for msg in messages]
self.assertEqual(expected_msgids, actual_msgids)
def makeMessages(self, conn, archive, count):
return [
conn.add_message(
archive,
TEMPLATE_MESSAGE.format(
date=formatdate(i * 100),
id='<message%d@example.com>' % i))
for i in range(count)]
def makeArchive(self):
conn = CassandraConnection(
os.environ['GRACKLE_TEST_KEYSPACE'], ['localhost:9160'])
archive = next(_RandomNameSequence())
return conn, archive
def test_single_message(self):
conn, archive = self.makeArchive()
self.makeMessages(conn, archive, 1)
self.assertMessages(
[0], conn.get_messages(archive, 'date', 1, '')[1])
def test_limit(self):
conn, archive = self.makeArchive()
self.makeMessages(conn, archive, 4)
self.assertMessages(
[0, 1], conn.get_messages(archive, 'date', 2, '')[1])
def test_order(self):
conn, archive = self.makeArchive()
self.makeMessages(conn, archive, 4)
self.assertMessages(
[3, 2], conn.get_messages(archive, '-date', 2, '')[1])
def test_batching_forward(self):
conn, archive = self.makeArchive()
self.makeMessages(conn, archive, 5)
prev, messages, next = conn.get_messages(archive, 'date', 2, '')
self.assertMessages([0, 1], messages)
prev, messages, next = conn.get_messages(archive, 'date', 2, next)
self.assertMessages([2, 3], messages)
prev, messages, next = conn.get_messages(archive, 'date', 2, next)
self.assertMessages([4], messages)
prev, messages, next = conn.get_messages(archive, 'date', 2, next)
self.assertIs(None, prev)
self.assertMessages([], messages)
self.assertIs(None, next)
def test_batching_backward(self):
conn, archive = self.makeArchive()
self.makeMessages(conn, archive, 5)
prev, messages, next = conn.get_messages(archive, 'date', 2, '')
self.assertMessages([0, 1], messages)
prev, messages, next = conn.get_messages(archive, 'date', 2, next)
self.assertMessages([2, 3], messages)
prev, messages, next = conn.get_messages(
archive, 'date', 2, prev, backward=True)
self.assertMessages([0, 1], messages)
prev, messages, next = conn.get_messages(
archive, 'date', 2, prev, backward=True)
self.assertIs(None, prev)
self.assertMessages([], messages)
self.assertIs(None, next)
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