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#!/usr/bin/env python
"""Test datastore migration from version 1 to version 2."""
import dbus
import decorator
import hashlib
import os
import tempfile
import time
import unittest
import uuid
DS_DBUS_SERVICE = "org.laptop.sugar.DataStore"
DS_DBUS_INTERFACE = "org.laptop.sugar.DataStore"
DS_DBUS_PATH = "/org/laptop/sugar/DataStore"
IGNORE_PROPERTIES = [
'activity_id',
'checksum',
'ctime',
'mtime',
'number',
'timestamp',
'uid',
]
class MigrationV1V2TestCase(unittest.TestCase):
"""Test datastore migration from version 1 to version 2."""
def __init__(self, *args, **kwargs):
unittest.TestCase.__init__(self, *args, **kwargs)
self._templates = self._v1_properties*10
def setUp(self):
# pylint: disable-msg=C0103
profile = os.environ.get('SUGAR_PROFILE', 'default')
base_dir = os.path.join(os.path.expanduser('~'), '.sugar', profile)
self._root_path = os.path.join(base_dir, 'datastore')
if not os.path.exists(self._root_path):
self._create_v1_datastore()
self._bus = dbus.SessionBus()
self._datastore = dbus.Interface(self._bus.get_object(DS_DBUS_SERVICE,
DS_DBUS_PATH), DS_DBUS_INTERFACE)
_v1_properties = [
{
'title': lambda number: 'DS test object %d' % (number, ),
'mime_type': 'text/plain',
},
{
'title': lambda number: 'DS test object %d' % (number, ),
'mime_type': 'text/html',
},
{
'title': lambda number: 'DS test object %d' % (number, ),
'title_set_by_user': '1',
'keep': '1',
'mime_type': 'text/html',
'activity': 'org.sugarlabs.DataStoreTest2',
'activity_id': lambda *args: str(uuid.uuid4()),
'timestamp': lambda *args: time.time(),
'icon-color': '#00ff00,#0000ff',
'buddies': '{}',
'description': 'DS migration test object',
'tags': lambda number: 'test tag%d' % (number, ),
'preview': dbus.ByteArray(''.join([chr(i) for i in range(255)])),
},
{
'title': lambda number: 'DS test object %d' % (number, ),
'activity': 'org.sugarlabs.DataStoreTest3',
'activity_id': lambda *args: str(uuid.uuid4()),
'ctime': lambda *args: time.strftime('%Y-%m-%dT%H:%M:%S'),
},
{
'title': lambda number: 'DS test object %d' % (number, ),
'activity': 'org.sugarlabs.DataStoreTest4',
'activity_id': lambda *args: str(uuid.uuid4()),
'mtime': lambda *args: time.strftime('%Y-%m-%dT%H:%M:%S'),
},
{},
]
def _v1_content(self, num):
return ('Foo bar %d\n' % (num, ))*1000
def _create_v1_datastore(self):
"""Create a version 1 datastore on disk."""
os.makedirs(self._root_path)
file(os.path.join(self._root_path, 'version'), 'w').write('1')
for i, template in enumerate(self._templates):
metadata = self._fill_template(template, i)
data = self._v1_content(i)
tree_id = str(uuid.uuid4())
metadata['uid'] = tree_id
metadata['number'] = i
self._create_v1_entry(tree_id, metadata, data)
def _fill_template(self, template, i):
metadata = {}
for (key, value) in template.items():
if callable(value):
value = value(i)
metadata[key] = value
return metadata
def _create_v1_entry(self, tree_id, metadata, data):
"""Create a single version 1 datastore entry."""
checksum = hashlib.md5(data).hexdigest()
entry_dir = os.path.join(self._root_path, tree_id[:2], tree_id)
os.makedirs(entry_dir)
file(os.path.join(entry_dir, 'data'), 'w').write(data)
self._write_v1_metadata(os.path.join(entry_dir, 'metadata'), metadata)
checksum_dir = os.path.join(self._root_path, 'checksums', checksum)
os.makedirs(checksum_dir)
file(os.path.join(checksum_dir, tree_id), 'w').close()
def _write_v1_metadata(self, directory, metadata):
os.makedirs(directory)
for key, value in metadata.items():
file(os.path.join(directory, key), 'w').write(str(value))
def test_find_all(self):
"""Run find() to list all migrated entries."""
entries, count = self._find({}, ['uid'])
self.assertEquals(count, len(self._templates))
def test_get_properties(self):
"""Run get_properties() on all entries and verify result."""
for entry in self._find({}, ['uid'])[0]:
properties = self._datastore.get_properties(entry['uid'],
byte_arrays=True)
number = int(properties['number'])
expected = self._fill_template(self._templates[number],
number)
self._filter_properties(properties)
self._filter_properties(expected)
self.assertEquals(properties, expected)
def test_get_filename(self):
"""Run get_filename() on all entries and verify content."""
for entry in self._find({}, ['number', 'uid'])[0]:
filename = self._datastore.get_filename(entry['uid'],
byte_arrays=True)
content = file(filename).read()
os.remove(filename)
number = int(entry['number'])
expected = self._v1_content(number)
self.assertEquals(content, expected)
def _find(self, query, properties):
return self._datastore.find(dbus.Dictionary(query, signature='sv'),
properties, byte_arrays=True)
def _filter_properties(self, properties):
for key in IGNORE_PROPERTIES:
properties.pop(key, None)
def suite():
test_suite = unittest.TestLoader().loadTestsFromTestCase(MigrationV1V2TestCase)
test_suite.__doc__ = MigrationV1V2TestCase.__doc__
return test_suite
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