rattail-project/rattail Changeset

Changeset - 22e10accf5f0

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0 10 0

Lance Edgar - 8 years ago 2016-05-17 15:02:08
ledgar@sacfoodcoop.com

Add "batch" support to importer framework

Doesn't really split things up per se, just controls how often a "flush
changes" should occur.

10 files changed with 293 insertions and 146 deletions:

rattail/commands/importing.py

rattail/importing/handlers.py

rattail/importing/importers.py

rattail/importing/postgresql.py

rattail/importing/sqlalchemy.py

rattail/tests/commands/test_importing.py

rattail/tests/importing/test_handlers.py

rattail/tests/importing/test_importers.py

120

rattail/tests/importing/test_postgresql.py

rattail/tests/importing/test_sqlalchemy.py

0 comments (0 inline, 0 general)

rattail/commands/importing.py

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Show inline comments

@@ @@ -41,12 +41,14 @@ class ImportSubcommand(Subcommand): @@
     """
     handler_spec = None
     # TODO: move this into Subcommand or something..
     parent_name = None
     def __init__(self, *args, **kwargs):
         if 'handler_spec' in kwargs:
             self.handler_spec = kwargs.pop('handler_spec')
         super(ImportSubcommand, self).__init__(*args, **kwargs)
         if self.parent:
             self.parent_name = self.parent.name
     def get_handler_factory(self):
         """
@@ @@ -65,12 +67,14 @@ class ImportSubcommand(Subcommand): @@
         kwargs.setdefault('config', getattr(self, 'config', None))
         kwargs.setdefault('command', self)
         kwargs.setdefault('progress', self.progress)
         if 'args' in kwargs:
             args = kwargs['args']
             kwargs.setdefault('dry_run', args.dry_run)
             if hasattr(args, 'batch_size'):
                 kwargs.setdefault('batch_size', args.batch_size)
             # kwargs.setdefault('max_create', args.max_create)
             # kwargs.setdefault('max_update', args.max_update)
             # kwargs.setdefault('max_delete', args.max_delete)
             # kwargs.setdefault('max_total', args.max_total)
         kwargs = self.get_handler_kwargs(**kwargs)
         return factory(**kwargs)
@@ @@ -136,12 +140,19 @@ class ImportSubcommand(Subcommand): @@
         # max total changes, per model
         parser.add_argument('--max-total', type=int, metavar='COUNT',
                             help="Maximum number of *any* record changes which may occur, after which "
                             "a given import task should stop.  Note that this applies on a per-model "
                             "basis and not overall.")
         # batch size
         parser.add_argument('--batch', type=int, dest='batch_size', metavar='SIZE', default=200,
                             help="Split work to be done into batches, with the specified number of "
                             "records in each batch.  Or, set this to 0 (zero) to disable batching. "
                             "Implementation for this may vary somewhat between importers; default "
                             "batch size is 200 records.")
         # treat changes as warnings?
         parser.add_argument('--warnings', '-W', action='store_true',
                             help="Set this flag if you expect a \"clean\" import, and wish for any "
                             "changes which do occur to be processed further and/or specially.  The "
                             "behavior of this flag is ultimately up to the import handler, but the "
                             "default is to send an email notification.")

rattail/importing/handlers.py

➞

Show inline comments

@@ @@ -88,12 +88,14 @@ class ImportHandler(object): @@
         Returns an importer instance corresponding to the given key.
         """
         if key in self.importers:
             kwargs.setdefault('handler', self)
             kwargs.setdefault('config', self.config)
             kwargs.setdefault('host_system_title', self.host_title)
             if hasattr(self, 'batch_size'):
                 kwargs.setdefault('batch_size', self.batch_size)
             kwargs = self.get_importer_kwargs(key, **kwargs)
             return self.importers[key](**kwargs)
     def get_importer_kwargs(self, key, **kwargs):
         """
         Return a dict of kwargs to be used when construcing an importer with
@@ @@ -336,12 +338,6 @@ class ToSQLAlchemyHandler(ImportHandler): @@
         self.session = None
     def commit_local_transaction(self):
         self.session.commit()
         self.session.close()
         self.session = None
 class BulkToPostgreSQLHandler(BulkImportHandler):
     """
     Handler for bulk imports which target PostgreSQL on the local side.
     """

rattail/importing/importers.py

➞

Show inline comments

@@ @@ -39,12 +39,13 @@ log = logging.getLogger(__name__) @@
 class Importer(object):
     """
     Base class for all data importers.
     """
     # Set this to the data model class which is targeted on the local side.
     model_class = None
     model_name = None
     key = None
     # The full list of field names supported by the importer, i.e. for the data
     # model to which the importer pertains.  By definition this list will be
     # restricted to what the local side can acommodate, but may be further
@@ @@ -62,12 +63,13 @@ class Importer(object): @@
     dry_run = False
     max_create = None
     max_update = None
     max_delete = None
     max_total = None
     batch_size = 200
     progress = None
     empty_local_data = False
     caches_local_data = False
     cached_local_data = None
@@ @@ -83,26 +85,25 @@ class Importer(object): @@
             self.key = (self.key,)
         if self.key:
             for field in self.key:
                 if field not in self.fields:
                     raise ValueError("Key field '{}' must be included in effective fields "
                                      "for {}".format(field, self.__class__.__name__))
         self.model_class = kwargs.pop('model_class', self.model_class)
         self.model_name = kwargs.pop('model_name', self.model_name)
         if not self.model_name and self.model_class:
             self.model_name = self.model_class.__name__
         self._setup(**kwargs)
     def _setup(self, **kwargs):
         self.create = kwargs.pop('create', self.allow_create) and self.allow_create
         self.update = kwargs.pop('update', self.allow_update) and self.allow_update
         self.delete = kwargs.pop('delete', False) and self.allow_delete
         for key, value in kwargs.iteritems():
             setattr(self, key, value)
     @property
     def model_name(self):
         if self.model_class:
             return self.model_class.__name__
     def setup(self):
         """
         Perform any setup necessary, e.g. cache lookups for existing data.
         """
     def teardown(self):
@@ @@ -205,31 +206,35 @@ class Importer(object): @@
                     log.warning("max of {} *created* records has been reached; stopping now".format(self.max_create))
                     break
                 if self.max_total and (len(created) + len(updated)) >= self.max_total:
                     log.warning("max of {} *total changes* has been reached; stopping now".format(self.max_total))
                     break
             self.flush_changes(i)
             # # TODO: this needs to be customizable etc. somehow maybe..
             # if i % 100 == 0 and hasattr(self, 'session'):
             #     self.session.flush()
             # flush changes every so often
             if not self.batch_size or (len(created) + len(updated)) % self.batch_size == 0:
                 self.flush_create_update()
             if prog:
                 prog.update(i)
         if prog:
             prog.destroy()
         self.flush_create_update_final()
         return created, updated
     # TODO: this surely goes elsewhere
     flush_every_x = 100
     def flush_create_update(self):
         """
         Perform any steps necessary to "flush" the create/update changes which
         have occurred thus far in the import.
         """
     def flush_changes(self, x):
         if self.flush_every_x and x % self.flush_every_x == 0:
             if hasattr(self, 'session'):
                 self.session.flush()
     def flush_create_update_final(self):
         """
         Perform any final steps to "flush" the created/updated data here.
         """
         self.flush_create_update()
     def _import_delete(self, host_data, host_keys, changes=0):
         """
         Import deletions for the given data set.
         """
         deleted = []
@@ @@ -457,13 +462,13 @@ class FromQuery(Importer): @@
         """
         return QuerySequence(self.query())
 class BulkImporter(Importer):
     """
-    Base class for bulk data importers which target PostgreSQL on the local side.
     Base class for bulk data importers.
     """
     def import_data(self, host_data=None, now=None, **kwargs):
         self.now = now or make_utc(datetime.datetime.utcnow(), tzinfo=True)
         if kwargs:
             self._setup(**kwargs)
@@ @@ -490,20 +495,17 @@ class BulkImporter(Importer): @@
             self.create_object(key, host_data)
             if self.max_create and i >= self.max_create:
                 log.warning("max of {} *created* records has been reached; stopping now".format(self.max_create))
                 created = i
                 break
             # flush changes every so often
             if not self.batch_size or i % self.batch_size == 0:
                 self.flush_create_update()
             if prog:
                 prog.update(i)
         if prog:
             prog.destroy()
-        self.flush_create()
+        self.flush_create_update_final()
         return created
     def flush_create(self):
         """
         Perform any final steps to "flush" the created data here.  Note that
         the importer's handler is still responsible for actually committing
         changes to the local system, if applicable.
         """

rattail/importing/postgresql.py

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Show inline comments

@@ @@ -80,13 +80,16 @@ class BulkToPostgreSQL(BulkImporter, ToSQLAlchemy): @@
             value = value.replace('\r', '\\r')
             value = value.replace('\n', '\\n')
             value = value.replace('\t', '\\t') # TODO: add test for this
         return unicode(value)
     def flush_create(self):
     def flush_create_update(self):
         pass
     def flush_create_update_final(self):
         log.info("copying {} data from buffer to PostgreSQL".format(self.model_name))
         self.data_buffer.close()
         self.data_buffer = open(self.data_path, 'rb')
         cursor = self.session.connection().connection.cursor()
         table_name = '"{}"'.format(self.model_table.name)
         cursor.copy_from(self.data_buffer, table_name, columns=self.fields)

rattail/importing/sqlalchemy.py

➞

Show inline comments

@@ @@ -167,6 +167,13 @@ class ToSQLAlchemy(Importer): @@
                                 normalizer=self.normalize_cache_object)
     def cache_query_options(self):
         """
         Return a list of options to apply to the cache query, if needed.
         """
     def flush_create_update(self):
         """
         Flush the database session, to send SQL to the server for all changes
         made thus far.
         """
         self.session.flush()

rattail/tests/commands/test_importing.py

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Show inline comments

@@ @@ -6,13 +6,13 @@ import argparse @@
 from unittest import TestCase
 from mock import Mock, patch
 from rattail.core import Object
 from rattail.commands import importing
 from rattail.importing import ImportHandler
+from rattail.importing import Importer, ImportHandler
 from rattail.importing.rattail import FromRattailToRattail
 from rattail.config import RattailConfig
 from rattail.tests.importing import ImporterTester
 from rattail.tests.importing.test_handlers import MockImportHandler
 from rattail.tests.importing.test_importers import MockImporter
 from rattail.tests.importing.test_rattail import DualRattailTestCase
 class MockImport(importing.ImportSubcommand):
     def get_handler_factory(self):
         return MockImportHandler
-class TestImportSubcommandBasics(TestCase):
+class TestImportSubcommand(TestCase):
     # TODO: lame, here only for coverage
     def test_parent_name(self):
         parent = Object(name='milo')
         command = importing.ImportSubcommand(parent=parent)
         self.assertEqual(command.parent_name, 'milo')
@@ @@ -36,12 +36,28 @@ class TestImportSubcommandBasics(TestCase): @@
         command = importing.ImportSubcommand()
         self.assertRaises(NotImplementedError, command.get_handler_factory)
         command.handler_spec = 'rattail.importing.rattail:FromRattailToRattail'
         factory = command.get_handler_factory()
         self.assertIs(factory, FromRattailToRattail)
     def test_handler_spec_attr(self):
         # default is None
         command = importing.ImportSubcommand()
         self.assertIsNone(command.handler_spec)
         # can't get a handler without a spec
         self.assertRaises(NotImplementedError, command.get_handler)
         # but may be specified with init kwarg
         command = importing.ImportSubcommand(handler_spec='rattail.importing:ImportHandler')
         self.assertEqual(command.handler_spec, 'rattail.importing:ImportHandler')
         # now we can get a handler
         handler = command.get_handler()
         self.assertIsInstance(handler, ImportHandler)
     def test_get_handler(self):
         # no config
         command = MockImport()
         handler = command.get_handler()
         self.assertIs(type(handler), MockImportHandler)
@@ @@ -62,183 +78,196 @@ class TestImportSubcommandBasics(TestCase): @@
         self.assertTrue(handler.dry_run)
         args = argparse.Namespace(dry_run=True)
         handler = command.get_handler(args=args)
         self.assertTrue(handler.dry_run)
     def test_add_parser_args(self):
         # TODO: this doesn't really test anything, but does give some coverage..
-        # no handler
+        # adding the args throws no error..(basic coverage)
         command = importing.ImportSubcommand()
         parser = argparse.ArgumentParser()
         command.add_parser_args(parser)
         # with handler
         command = MockImport()
         # confirm default values
         args = parser.parse_args([])
         self.assertIsNone(args.start_date)
         self.assertIsNone(args.end_date)
         self.assertTrue(args.create)
         self.assertIsNone(args.max_create)
         self.assertTrue(args.update)
         self.assertIsNone(args.max_update)
         self.assertFalse(args.delete)
         self.assertIsNone(args.max_delete)
         self.assertIsNone(args.max_total)
         self.assertEqual(args.batch_size, 200)
         self.assertFalse(args.warnings)
         self.assertFalse(args.dry_run)
     def test_batch_size_kwarg(self):
         command = importing.ImportSubcommand(handler_spec='rattail.importing:ImportHandler')
         parser = argparse.ArgumentParser()
         command.add_parser_args(parser)
         with patch.object(ImportHandler, 'get_importers', Mock(return_value={'Foo': Importer})):
             # importer default is 200
             args = parser.parse_args([])
             handler = command.get_handler(args=args)
             importer = handler.get_importer('Foo')
             self.assertEqual(importer.batch_size, 200)
             # but may be overridden with command line arg
             args = parser.parse_args(['--batch', '42'])
             handler = command.get_handler(args=args)
             importer = handler.get_importer('Foo')
             self.assertEqual(importer.batch_size, 42)
-class TestImportSubcommandRun(ImporterTester, TestCase):
+class TestImportSubcommandRun(TestCase, ImporterTester):
     sample_data = {
         '16oz': {'upc': '00074305001161', 'description': "Apple Cider Vinegar 16oz"},
         '32oz': {'upc': '00074305001321', 'description': "Apple Cider Vinegar 32oz"},
         '1gal': {'upc': '00074305011283', 'description': "Apple Cider Vinegar 1gal"},
+    }
     def setUp(self):
         self.command = MockImport()
         self.handler = MockImportHandler()
         self.importer = MockImporter()
     def import_data(self, **kwargs):
     def import_data(self, host_data=None, local_data=None, **kwargs):
         if host_data is None:
             host_data = self.sample_data
         if local_data is None:
             local_data = self.sample_data
         models = kwargs.pop('models', [])
         kwargs.setdefault('dry_run', False)
         kw = {
             'warnings': False,
             'create': None,
             'max_create': None,
             'update': None,
             'max_update': None,
             'delete': None,
             'max_delete': None,
             'max_total': None,
             'batchcount': None,
             'progress': None,
+        }
         kw.update(kwargs)
         args = argparse.Namespace(models=models, **kw)
         # must modify our importer in-place since we need the handler to return
         # that specific instance, below (because the host/local data context
         # managers reference that instance directly)
         self.importer._setup(**kwargs)
         with patch.object(self.command, 'get_handler', Mock(return_value=self.handler)):
             with patch.object(self.handler, 'get_importer', Mock(return_value=self.importer)):
                 with self.host_data(host_data):
                     with self.local_data(local_data):
                         self.command.run(args)
         if self.handler._result:
             self.result = self.handler._result['Product']
         else:
             self.result = [], [], []
     def test_create(self):
         local = self.copy_data()
         del local['32oz']
         with self.host_data(self.sample_data):
             with self.local_data(local):
                 self.import_data()
         self.import_data(local_data=local)
         self.assert_import_created('32oz')
         self.assert_import_updated()
         self.assert_import_deleted()
     def test_update(self):
         local = self.copy_data()
         local['16oz']['description'] = "wrong description"
         with self.host_data(self.sample_data):
             with self.local_data(local):
                 self.import_data()
         self.import_data(local_data=local)
         self.assert_import_created()
         self.assert_import_updated('16oz')
         self.assert_import_deleted()
     def test_delete(self):
         local = self.copy_data()
         local['bogus'] = {'upc': '00000000000000', 'description': "Delete Me"}
         with self.host_data(self.sample_data):
             with self.local_data(local):
                 self.import_data(delete=True)
         self.import_data(local_data=local, delete=True)
         self.assert_import_created()
         self.assert_import_updated()
         self.assert_import_deleted('bogus')
     def test_duplicate(self):
         host = self.copy_data()
         host['32oz-dupe'] = host['32oz']
         with self.host_data(host):
             with self.local_data(self.sample_data):
                 self.import_data()
         self.import_data(host_data=host)
         self.assert_import_created()
         self.assert_import_updated()
         self.assert_import_deleted()
     def test_max_create(self):
         local = self.copy_data()
         del local['16oz']
         del local['1gal']
         with self.host_data(self.sample_data):
             with self.local_data(local):
                 self.import_data(max_create=1)
         self.import_data(local_data=local, max_create=1)
         self.assert_import_created('16oz')
         self.assert_import_updated()
         self.assert_import_deleted()
     def test_max_total_create(self):
         local = self.copy_data()
         del local['16oz']
         del local['1gal']
         with self.host_data(self.sample_data):
             with self.local_data(local):
                 self.import_data(max_total=1)
         self.import_data(local_data=local, max_total=1)
         self.assert_import_created('16oz')
         self.assert_import_updated()
         self.assert_import_deleted()
     def test_max_update(self):
         local = self.copy_data()
         local['16oz']['description'] = "wrong"
         local['1gal']['description'] = "wrong"
         with self.host_data(self.sample_data):
             with self.local_data(local):
                 self.import_data(max_update=1)
         self.import_data(local_data=local, max_update=1)
         self.assert_import_created()
         self.assert_import_updated('16oz')
         self.assert_import_deleted()
     def test_max_total_update(self):
         local = self.copy_data()
         local['16oz']['description'] = "wrong"
         local['1gal']['description'] = "wrong"
         with self.host_data(self.sample_data):
             with self.local_data(local):
                 self.import_data(max_total=1)
         self.import_data(local_data=local, max_total=1)
         self.assert_import_created()
         self.assert_import_updated('16oz')
         self.assert_import_deleted()
     def test_max_delete(self):
         local = self.copy_data()
         local['bogus1'] = {'upc': '00000000000001', 'description': "Delete Me"}
         local['bogus2'] = {'upc': '00000000000002', 'description': "Delete Me"}
         with self.host_data(self.sample_data):
             with self.local_data(local):
                 self.import_data(delete=True, max_delete=1)
         self.import_data(local_data=local, delete=True, max_delete=1)
         self.assert_import_created()
         self.assert_import_updated()
         self.assert_import_deleted('bogus1')
     def test_max_total_delete(self):
         local = self.copy_data()
         local['bogus1'] = {'upc': '00000000000001', 'description': "Delete Me"}
         local['bogus2'] = {'upc': '00000000000002', 'description': "Delete Me"}
         with self.host_data(self.sample_data):
             with self.local_data(local):
                 self.import_data(delete=True, max_total=1)
         self.import_data(local_data=local, delete=True, max_total=1)
         self.assert_import_created()
         self.assert_import_updated()
         self.assert_import_deleted('bogus1')
     def test_dry_run(self):
         local = self.copy_data()
         del local['32oz']
         local['16oz']['description'] = "wrong description"
         local['bogus'] = {'upc': '00000000000000', 'description': "Delete Me"}
         with self.host_data(self.sample_data):
             with self.local_data(local):
                 self.import_data(delete=True, dry_run=True)
         self.import_data(local_data=local, delete=True, dry_run=True)
         # TODO: maybe need a way to confirm no changes actually made due to dry
         # run; currently results still reflect "proposed" changes.  this rather
         # bogus test is here just for coverage sake
         self.assert_import_created('32oz')
         self.assert_import_updated('16oz')
         self.assert_import_deleted('bogus')

rattail/tests/importing/test_handlers.py

➞

Show inline comments

@@ @@ -71,12 +71,22 @@ class ImportHandlerBattery(ImporterTester): @@
             handler = self.handler_class(config=config)
         importer = handler.get_importer('foo')
         self.assertIs(type(importer), Importer)
         self.assertIs(importer.config, config)
         self.assertIs(importer.handler, handler)
         # # batch size
         # with patch.object(self.handler_class, 'get_importers', get_importers):
         #     handler = self.handler_class()
         # importer = handler.get_importer('foo')
         # self.assertEqual(importer.batch_size, 200)
         # with patch.object(self.handler_class, 'get_importers', get_importers):
         #     handler = self.handler_class(batch_size=42)
         # importer = handler.get_importer('foo')
         # self.assertEqual(importer.batch_size, 42)
         # dry run
         with patch.object(self.handler_class, 'get_importers', get_importers):
             handler = self.handler_class()
         importer = handler.get_importer('foo')
         self.assertFalse(importer.dry_run)
         with patch.object(self.handler_class, 'get_importers', get_importers):
@@ @@ -273,12 +283,38 @@ class BulkImportHandlerBattery(ImportHandlerBattery): @@
             self.assertFalse(process.called)
 class TestImportHandler(unittest.TestCase, ImportHandlerBattery):
     handler_class = handlers.ImportHandler
     def test_batch_size_kwarg(self):
         with patch.object(handlers.ImportHandler, 'get_importers', Mock(return_value={'Foo': Importer})):
             # handler has no batch size by default
             handler = handlers.ImportHandler()
             self.assertFalse(hasattr(handler, 'batch_size'))
             # but can override with kwarg
             handler = handlers.ImportHandler(batch_size=42)
             self.assertEqual(handler.batch_size, 42)
             # importer default is 200
             handler = handlers.ImportHandler()
             importer = handler.get_importer('Foo')
             self.assertEqual(importer.batch_size, 200)
             # but can override with handler init kwarg
             handler = handlers.ImportHandler(batch_size=37)
             importer = handler.get_importer('Foo')
             self.assertEqual(importer.batch_size, 37)
             # can also override with get_importer kwarg
             handler = handlers.ImportHandler()
             importer = handler.get_importer('Foo', batch_size=98)
             self.assertEqual(importer.batch_size, 98)
     @patch('rattail.importing.handlers.send_email')
     def test_process_changes_sends_email(self, send_email):
         handler = handlers.ImportHandler()
         handler.import_began = pytz.utc.localize(datetime.datetime.utcnow())
         changes = [], [], []
@@ @@ -588,69 +624,6 @@ class TestToSQLAlchemyHandler(unittest.TestCase): @@
         self.assertIs(handler.session, session)
         with patch.object(handler, 'session') as session:
             handler.rollback_local_transaction()
             session.rollback.assert_called_once_with()
             self.assertFalse(session.commit.called)
         # self.assertIsNone(handler.session)
 ######################################################################
 # fake bulk import handler, tested mostly for basic coverage
 ######################################################################
 class MockBulkImportHandler(handlers.BulkToPostgreSQLHandler):
     def get_importers(self):
         return {'Department': MockBulkImporter}
     def make_session(self):
         return Session()
 class TestBulkImportHandlerOld(RattailTestCase, ImporterTester):
     importer_class = MockBulkImporter
     sample_data = {
         'grocery': {'number': 1, 'name': "Grocery", 'uuid': 'decd909a194011e688093ca9f40bc550'},
         'bulk': {'number': 2, 'name': "Bulk", 'uuid': 'e633d54c194011e687e33ca9f40bc550'},
         'hba': {'number': 3, 'name': "HBA", 'uuid': 'e2bad79e194011e6a4783ca9f40bc550'},
+    }
     def setUp(self):
         self.setup_rattail()
         self.tempio = TempIO()
         self.config.set('rattail', 'workdir', self.tempio.realpath())
         self.handler = MockBulkImportHandler(config=self.config)
     def tearDown(self):
         self.teardown_rattail()
         self.tempio = None
     def import_data(self, host_data=None, **kwargs):
         if host_data is None:
             host_data = list(self.copy_data().itervalues())
         with patch.object(self.importer_class, 'normalize_host_data', Mock(return_value=host_data)):
             with patch.object(self.handler, 'make_session', Mock(return_value=self.session)):
                 return self.handler.import_data('Department', **kwargs)
     def test_invalid_importer_key_is_ignored(self):
         handler = MockBulkImportHandler()
         self.assertNotIn('InvalidKey', handler.importers)
         self.assertEqual(handler.import_data('InvalidKey'), {})
     def assert_import_created(self, *keys):
         pass
     def assert_import_updated(self, *keys):
         pass
     def assert_import_deleted(self, *keys):
         pass
     def test_normal_run(self):
         if self.postgresql():
             self.import_data()
     def test_dry_run(self):
         if self.postgresql():
             self.import_data(dry_run=True)

rattail/tests/importing/test_importers.py

➞

Show inline comments

@@ @@ -56,15 +56,16 @@ class BulkImporterBattery(ImporterBattery): @@
         self.assertEqual(result, 0)
 class TestImporter(TestCase):
     def test_init(self):
         # defaults
         importer = importers.Importer()
         self.assertIsNone(importer.model_class)
         self.assertIsNone(importer.model_name)
         self.assertIsNone(importer.key)
         self.assertEqual(importer.fields, [])
         self.assertIsNone(importer.host_system_title)
         # key must be included among the fields
         self.assertRaises(ValueError, importers.Importer, key='upc', fields=[])
@@ @@ -189,12 +190,79 @@ class TestImporter(TestCase): @@
         self.assertEqual(keys, set())
         importer.cached_local_data = {'delete-me': object()}
         keys = importer.get_deletion_keys()
         self.assertEqual(keys, set(['delete-me']))
     def test_model_name_attr(self):
         # default is None
         importer = importers.Importer()
         self.assertIsNone(importer.model_name)
         # but may be overridden via init kwarg
         importer = importers.Importer(model_name='Foo')
         self.assertEqual(importer.model_name, 'Foo')
         # or may inherit its value from 'model_class'
         class Foo:
             pass
         importer = importers.Importer(model_class=Foo)
         self.assertEqual(importer.model_name, 'Foo')
     def test_batch_size_attr(self):
         # default is 200
         importer = importers.Importer()
         self.assertEqual(importer.batch_size, 200)
         # but may be overridden via init kwarg
         importer = importers.Importer(batch_size=0)
         self.assertEqual(importer.batch_size, 0)
         importer = importers.Importer(batch_size=42)
         self.assertEqual(importer.batch_size, 42)
         # batch size determines how often flush occurs
         data = [{'id': i} for i in range(1, 101)]
         importer = importers.Importer(model_name='Foo', key='id', fields=['id'], empty_local_data=True)
         with patch.object(importer, 'create_object'): # just mock that out
             with patch.object(importer, 'flush_create_update') as flush:
                 # 4 batches @ 33/per
                 importer.import_data(host_data=data, batch_size=33)
                 self.assertEqual(flush.call_count, 4)
                 flush.reset_mock()
                 # 3 batches @ 34/per
                 importer.import_data(host_data=data, batch_size=34)
                 self.assertEqual(flush.call_count, 3)
                 flush.reset_mock()
                 # 2 batches @ 50/per
                 importer.import_data(host_data=data, batch_size=100)
                 self.assertEqual(flush.call_count, 2)
                 flush.reset_mock()
                 # one extra/final flush happens, whenever the total number of
                 # changes happens to match the batch size...
                 # 1 batch @ 100/per, plus final flush
                 importer.import_data(host_data=data, batch_size=100)
                 self.assertEqual(flush.call_count, 2)
                 flush.reset_mock()
                 # 1 batch @ 200/per
                 importer.import_data(host_data=data, batch_size=200)
                 self.assertEqual(flush.call_count, 1)
                 flush.reset_mock()
                 # one extra/final flush also happens when batching is disabled
                 # 100 "batches" @ 0/per, plus final flush
                 importer.import_data(host_data=data, batch_size=0)
                 self.assertEqual(flush.call_count, 101)
                 flush.reset_mock()
 class TestFromQuery(RattailTestCase):
     def test_query(self):
         importer = importers.FromQuery()
         self.assertRaises(NotImplementedError, importer.query)
@@ @@ -207,12 +275,63 @@ class TestFromQuery(RattailTestCase): @@
         self.assertIsInstance(objects, QuerySequence)
 class TestBulkImporter(TestCase, BulkImporterBattery):
     importer_class = importers.BulkImporter
     def test_batch_size_attr(self):
         # default is 200
         importer = importers.BulkImporter()
         self.assertEqual(importer.batch_size, 200)
         # but may be overridden via init kwarg
         importer = importers.BulkImporter(batch_size=0)
         self.assertEqual(importer.batch_size, 0)
         importer = importers.BulkImporter(batch_size=42)
         self.assertEqual(importer.batch_size, 42)
         # batch size determines how often flush occurs
         data = [{'id': i} for i in range(1, 101)]
         importer = importers.BulkImporter(model_name='Foo', key='id', fields=['id'], empty_local_data=True)
         with patch.object(importer, 'create_object'): # just mock that out
             with patch.object(importer, 'flush_create_update') as flush:
                 # 4 batches @ 33/per
                 importer.import_data(host_data=data, batch_size=33)
                 self.assertEqual(flush.call_count, 4)
                 flush.reset_mock()
                 # 3 batches @ 34/per
                 importer.import_data(host_data=data, batch_size=34)
                 self.assertEqual(flush.call_count, 3)
                 flush.reset_mock()
                 # 2 batches @ 50/per
                 importer.import_data(host_data=data, batch_size=100)
                 self.assertEqual(flush.call_count, 2)
                 flush.reset_mock()
                 # one extra/final flush happens, whenever the total number of
                 # changes happens to match the batch size...
                 # 1 batch @ 100/per, plus final flush
                 importer.import_data(host_data=data, batch_size=100)
                 self.assertEqual(flush.call_count, 2)
                 flush.reset_mock()
                 # 1 batch @ 200/per
                 importer.import_data(host_data=data, batch_size=200)
                 self.assertEqual(flush.call_count, 1)
                 flush.reset_mock()
                 # one extra/final flush also happens when batching is disabled
                 # 100 "batches" @ 0/per, plus final flush
                 importer.import_data(host_data=data, batch_size=0)
                 self.assertEqual(flush.call_count, 101)
                 flush.reset_mock()
 ######################################################################
 # fake importer class, tested mostly for basic coverage
 ######################################################################

rattail/tests/importing/test_postgresql.py

➞

Show inline comments

@@ @@ -36,23 +36,22 @@ class TestBulkToPostgreSQL(unittest.TestCase): @@
     def make_importer(self, **kwargs):
         kwargs.setdefault('config', self.config)
         kwargs.setdefault('fields', ['id']) # hack
         return pgimport.BulkToPostgreSQL(**kwargs)
     def test_data_path(self):
         importer = self.make_importer(config=None)
         self.assertIsNone(importer.config)
         self.assertRaises(AttributeError, getattr, importer, 'data_path')
         importer.config = RattailConfig()
         self.assertRaises(ConfigurationError, getattr, importer, 'data_path')
         importer.config = self.config
     def test_data_path_property(self):
         self.config.set('rattail', 'workdir', '/tmp')
         self.assertEqual(importer.data_path, '/tmp/import_bulk_postgresql_None.csv') # no model yet
         importer.model_class = Widget
         self.assertEqual(importer.data_path, '/tmp/import_bulk_postgresql_Widget.csv')
         importer = pgimport.BulkToPostgreSQL(config=self.config, fields=['id'])
         # path leverages model name, so default is None
         self.assertEqual(importer.data_path, '/tmp/import_bulk_postgresql_None.csv')
         # but it will reflect model name
         importer.model_name = 'Foo'
         self.assertEqual(importer.data_path, '/tmp/import_bulk_postgresql_Foo.csv')
     def test_setup(self):
         importer = self.make_importer()
         self.assertFalse(hasattr(importer, 'data_buffer'))
         importer.setup()
         self.assertIsNotNone(importer.data_buffer)

rattail/tests/importing/test_sqlalchemy.py

➞

Show inline comments

 # -*- coding: utf-8 -*-
 from __future__ import unicode_literals, absolute_import
 from unittest import TestCase
 from mock import patch
 import sqlalchemy as sa
 from sqlalchemy import orm
 from sqlalchemy.orm.exc import MultipleResultsFound
 from rattail.importing import sqlalchemy as saimport
@@ @@ -142,6 +144,12 @@ class TestToSQLAlchemy(TestCase): @@
     def test_flush_session(self):
         importer = self.make_importer(fields=['id'], session=self.session, flush_session=True)
         widget = Widget()
         widget.id = 1
         widget, original = importer.update_object(widget, {'id': 1}), widget
         self.assertIs(widget, original)
     def test_flush_create_update(self):
         importer = saimport.ToSQLAlchemy(fields=['id'], session=self.session)
         with patch.object(self.session, 'flush') as flush:
             importer.flush_create_update()
             flush.assert_called_once_with()

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