1) Fixed SyncKillTest

2) Added some logs

src/django_clickhouse/engines.py

@@ -5,7 +5,6 @@ from typing import List, TypeVar, Type
 
 from django.db.models import Model as DjangoModel
 from infi.clickhouse_orm import engines as infi_engines
-from infi.clickhouse_orm.database import Database
 from infi.clickhouse_orm.models import Model as InfiModel
 from statsd.defaults.django import statsd
 
@@ -98,7 +97,7 @@ class CollapsingMergeTree(InsertOnlyEngineMixin, infi_engines.CollapsingMergeTre
 
     def set_obj_sign(self, obj, sign):  # type: (InfiModel, int) -> None
         """
-        Sets objects sign. By default gets attribute nmae from sign_col
+        Sets objects sign. By default gets attribute name from sign_col
         :return: None
         """
         setattr(obj, self.sign_col, sign)

src/django_clickhouse/storages.py

@@ -113,7 +113,8 @@ class Storage:
 
         statsd_key = "%s.sync.%s.queue" % (config.STATSD_PREFIX, import_key)
         statsd.gauge(statsd_key, len(pks), delta=True)
-        logger.debug('django-clickhouse: registered %d items (%s) to storage' % (len(pks), import_key))
+        logger.debug('django-clickhouse: registered %s on %d items (%s) to storage'
+                     % (operation, len(pks), import_key))
 
         return self.register_operations(import_key, operation, *pks)
 
@@ -147,7 +148,7 @@ class RedisStorage(Storage):
         2) CLICKHOUSE_REDIS_CONFIG parameter defined. This should be a dict of kwargs for redis.StrictRedis(**kwargs).
     """
     REDIS_KEY_OPS_TEMPLATE = 'clickhouse_sync:operations:{import_key}'
-    REDIS_KEY_TS_TEMPLATE = 'clickhouse_sync:timstamp:{import_key}'
+    REDIS_KEY_RANK_TEMPLATE = 'clickhouse_sync:timstamp:{import_key}'
     REDIS_KEY_LOCK = 'clickhouse_sync:lock:{import_key}'
     REDIS_KEY_LOCK_PID = 'clickhouse_sync:lock_pid:{import_key}'
     REDIS_KEY_LAST_SYNC_TS = 'clickhouse_sync:last_sync:{import_key}'
@@ -180,8 +181,8 @@ class RedisStorage(Storage):
         if res:
             ops, scores = zip(*res)
 
-            ts_key = self.REDIS_KEY_TS_TEMPLATE.format(import_key=import_key)
-            self._redis.set(ts_key, max(scores))
+            rank_key = self.REDIS_KEY_RANK_TEMPLATE.format(import_key=import_key)
+            self._redis.set(rank_key, len(ops) - 1)
 
             return list(tuple(op.decode().split(':')) for op in ops)
         else:
@@ -210,7 +211,8 @@ class RedisStorage(Storage):
             # Let's check if pid exists
             pid = int(self._redis.get(lock_pid_key) or 0)
             if pid and not check_pid(pid):
-                logger.warning('django-clickhouse: hard releasing lock "%s" locked by pid %d' % (import_key, pid))
+                logger.warning('django-clickhouse: hard releasing lock "%s" locked by pid %d (process is dead)'
+                               % (import_key, pid))
                 self._redis.delete(lock_pid_key)
                 lock.hard_release()
                 self.pre_sync(import_key, **kwargs)
@@ -218,12 +220,12 @@ class RedisStorage(Storage):
                 raise
 
     def post_sync(self, import_key, **kwargs):
-        ts_key = self.REDIS_KEY_TS_TEMPLATE.format(import_key=import_key)
+        rank_key = self.REDIS_KEY_RANK_TEMPLATE.format(import_key=import_key)
         ops_key = self.REDIS_KEY_OPS_TEMPLATE.format(import_key=import_key)
 
-        score = self._redis.get(ts_key)
-        if score:
-            res = self._redis.zremrangebyscore(ops_key, '-inf', float(score))
+        top_rank = self._redis.get(rank_key)
+        if top_rank:
+            res = self._redis.zremrangebyrank(ops_key, 0, top_rank)
             batch_size = int(res)
         else:
             batch_size = 0
@@ -239,7 +241,7 @@ class RedisStorage(Storage):
 
     def flush(self):
         key_tpls = [
-            self.REDIS_KEY_TS_TEMPLATE.format(import_key='*'),
+            self.REDIS_KEY_RANK_TEMPLATE.format(import_key='*'),
             self.REDIS_KEY_OPS_TEMPLATE.format(import_key='*'),
             self.REDIS_KEY_LOCK.format(import_key='*'),
             self.REDIS_KEY_LAST_SYNC_TS.format(import_key='*')

src/django_clickhouse/utils.py

@@ -1,7 +1,7 @@
 import datetime
 import os
 from itertools import chain
-from typing import Union, Any, Optional, TypeVar, Set, Dict, Iterable
+from typing import Union, Any, Optional, TypeVar, Set, Dict, Iterable, Tuple, Iterator
 
 import pytz
 import six
@@ -133,4 +133,28 @@ def check_pid(pid):
     except OSError:
         return False
     else:
-        return True
+        return True
+
+
+def int_ranges(items: Iterable[int]) -> Iterator[Tuple[int, int]]:
+    """
+    Finds continuous intervals in integer iterable.
+    :param items: Items to search in
+    :return: Iterator over Tuple[start, end]
+    """
+    interval_start = None
+    prev_item = None
+    for item in sorted(items):
+        if prev_item is None:
+            interval_start = prev_item = item
+        elif prev_item + 1 == item:
+            prev_item = item
+        else:
+            interval = interval_start, prev_item
+            interval_start = prev_item = item
+            yield interval
+
+    if interval_start is None:
+        raise StopIteration()
+    else:
+        yield interval_start, prev_item

tests/clickhouse_models.py

@@ -8,6 +8,7 @@ from tests.models import TestModel
 class ClickHouseTestModel(ClickHouseModel):
     django_model = TestModel
     sync_delay = 2
+    sync_enabled = True
 
     id = fields.Int32Field()
     created_date = fields.DateField()
@@ -33,3 +34,5 @@ class ClickHouseCollapseTestModel(ClickHouseModel):
 class ClickHouseMultiTestModel(ClickHouseMultiModel):
     django_model = TestModel
     sub_models = [ClickHouseTestModel, ClickHouseCollapseTestModel]
+    sync_delay = 2
+    sync_enabled = True

tests/kill_test_sub_process.py

@@ -1,3 +1,4 @@
+import logging
 import sys
 
 import argparse
@@ -18,42 +19,53 @@ from django.db.models import F
 from tests.clickhouse_models import ClickHouseCollapseTestModel
 from tests.models import TestModel
 
+logger = logging.getLogger('django-clickhouse')
+
 
 def create(batch_size=1000, test_time=60, period=1, **kwargs):
     for iteration in range(int(test_time / period)):
-        TestModel.objects.db_manager('test_db').bulk_create([
+        res = TestModel.objects.db_manager('test_db').bulk_create([
             TestModel(created_date='2018-01-01', value=iteration * batch_size + i) for i in range(batch_size)
         ])
+        logger.info('django-clickhouse: test created %d records' % len(res))
         sleep(period)
 
 
-def update(batch_size=1000, test_time=60, period=1, **kwargs):
+def update(batch_size=500, test_time=60, period=1, **kwargs):
     for iteration in range(int(test_time / period)):
-        TestModel.objects.db_manager('test_db').filter(id__gte=iteration * batch_size).annotate(idmod10=F('id') % 10). \
-            filter(idmod10=0).update(value=-1)
+        updated = TestModel.objects.db_manager('test_db').\
+            filter(value__gte=iteration * batch_size, value__lt=(iteration + 1) * batch_size).\
+            annotate(valmod10=F('value') % 10).filter(valmod10=0).update(value=-1)
+        logger.debug('django-clickhouse: test updated %d records' % updated)
         sleep(period)
 
 
-def delete(batch_size=1000, test_time=60, period=1, **kwargs):
+def delete(batch_size=500, test_time=60, period=1, **kwargs):
     for iteration in range(int(test_time / period)):
-        TestModel.objects.db_manager('test_db').filter(id__gte=iteration * batch_size).annotate(idmod10=F('id') % 10). \
-            filter(idmod10=1).delete()
+        deleted, _ = TestModel.objects.db_manager('test_db'). \
+            filter(value__gte=iteration * batch_size, value__lt=(iteration + 1) * batch_size). \
+            annotate(valmod10=F('value') % 10).filter(valmod10=1).delete()
+        logger.debug('django-clickhouse: test deleted %d records' % deleted)
         sleep(period)
 
 
 def sync(period=1, test_time=60, **kwargs):
-    start = datetime.datetime.now()
-    while (datetime.datetime.now() - start).total_seconds() < test_time:
+    if kwargs['once']:
         ClickHouseCollapseTestModel.sync_batch_from_storage()
-        sleep(period)
+    else:
+        start = datetime.datetime.now()
+        while (datetime.datetime.now() - start).total_seconds() < test_time:
+            ClickHouseCollapseTestModel.sync_batch_from_storage()
+            sleep(period)
 
 
 if __name__ == '__main__':
     parser = argparse.ArgumentParser()
     parser.add_argument('process', type=str, choices=('sync', 'create', 'update', 'delete'))
     parser.add_argument('--test-time', type=int, required=False, default=60)
-    parser.add_argument('--batch-size', type=str, required=False, default=1000)
-    parser.add_argument('--period', type=str, required=False, default=1)
+    parser.add_argument('--batch-size', type=int, required=False, default=1000)
+    parser.add_argument('--period', type=int, required=False, default=1)
+    parser.add_argument('--once', type=bool, required=False, default=False)
     params = vars(parser.parse_args())
 
     func_name = params['process']

tests/test_clickhouse_models.py

@@ -12,6 +12,7 @@ class ClickHouseModelTest(TestCase):
 
     def test_need_sync(self):
         # sync is disabled by default
+        ClickHouseTestModel.sync_enabled = False
         self.assertFalse(ClickHouseTestModel.need_sync())
 
         # There were no syncs. So it should be done

tests/test_sync.py

@@ -2,7 +2,7 @@ import datetime
 import logging
 from subprocess import Popen
 from time import sleep
-from unittest import expectedFailure
+from unittest import expectedFailure, skip
 
 import os
 from django.test import TransactionTestCase
@@ -11,6 +11,7 @@ from random import randint
 
 from django_clickhouse.database import connections
 from django_clickhouse.migrations import migrate_app
+from django_clickhouse.utils import int_ranges
 from tests.clickhouse_models import ClickHouseTestModel, ClickHouseCollapseTestModel, ClickHouseMultiTestModel
 from tests.models import TestModel
 
@@ -101,7 +102,7 @@ class SyncTest(TransactionTestCase):
 
 
 class KillTest(TransactionTestCase):
-    TEST_TIME = 30
+    TEST_TIME = 60
     maxDiff = None
 
     def setUp(self):
@@ -110,17 +111,39 @@ class KillTest(TransactionTestCase):
         connections['default'].create_database()
         migrate_app('tests', 'default')
 
+        # Disable sync for not interesting models
+        ClickHouseMultiTestModel.sync_enabled = False
+        ClickHouseTestModel.sync_enabled = False
+
+    def tearDown(self):
+        # Disable sync for not interesting models
+        ClickHouseMultiTestModel.sync_enabled = True
+        ClickHouseTestModel.sync_enabled = True
+
     def _check_data(self):
+        logger.debug('django-clickhouse: syncing left test data')
+
         # Sync all data that is not synced
         # Data is expected to be in test_db, not default. So we need to call subprocess
         # in order everything works correctly
-        while ClickHouseCollapseTestModel.get_storage().operations_count(ClickHouseCollapseTestModel.get_import_key()):
+        import_key = ClickHouseCollapseTestModel.get_import_key()
+        storage = ClickHouseCollapseTestModel.get_storage()
+        sync_left = storage.operations_count(import_key)
+        while sync_left:
+            logger.debug('django-clickhouse: final sync (%d left)' % sync_left)
             self.sync_iteration(False)
+            sync_left = storage.operations_count(import_key)
 
         ch_data = list(connections['default'].select('SELECT * FROM $table FINAL ORDER BY id',
                                                      model_class=ClickHouseCollapseTestModel))
         pg_data = list(TestModel.objects.all().order_by('id'))
 
+        if len(pg_data) != len(ch_data):
+            absent_ids = set(item.id for item in pg_data) - set(item.id for item in ch_data)
+            logger.debug('django_clickhouse: absent ranges: %s (min: %d, max: %d)'
+                         % (','.join(('(%d, %d)' % r) for r in int_ranges(absent_ids)),
+                            min(item.id for item in pg_data), max(item.id for item in pg_data)))
+
         self.assertEqual(len(pg_data), len(ch_data))
         serializer = ClickHouseCollapseTestModel.get_django_model_serializer()
         self.assertListEqual(ch_data, [serializer.serialize(item) for item in pg_data])
@@ -128,11 +151,15 @@ class KillTest(TransactionTestCase):
     @classmethod
     def sync_iteration(cls, kill=True):
         test_script = os.path.join(os.path.dirname(__file__), 'kill_test_sub_process.py')
-        p_sync = Popen(['python3', test_script, 'sync', '--test-time', str(cls.TEST_TIME)])
+        if kill:
+            args = ['--test-time', str(cls.TEST_TIME)]
+        else:
+            args = ['--once', 'true']
+        p_sync = Popen(['python3', test_script, 'sync'] + args)
 
         if kill:
             sleep(randint(0, 5))
-            logger.debug('django-clickhouse: killing: %d' % p_sync.pid)
+            logger.debug('django-clickhouse: test killing: %d' % p_sync.pid)
             p_sync.kill()
         else:
             p_sync.wait()
@@ -140,7 +167,9 @@ class KillTest(TransactionTestCase):
     def test_kills(self):
         test_script = os.path.join(os.path.dirname(__file__), 'kill_test_sub_process.py')
         p_create = Popen(['python3', test_script, 'create', '--test-time', str(self.TEST_TIME)])
-        p_update = Popen(['python3', test_script, 'update', '--test-time', str(self.TEST_TIME)])
+
+        # Updates must be slower than inserts, or they will do nothing
+        p_update = Popen(['python3', test_script, 'update', '--test-time', str(self.TEST_TIME), '--batch-size', '500'])
 
         start = now()
         while (now() - start).total_seconds() < self.TEST_TIME:

tests/test_utils.py

@@ -1,10 +1,10 @@
 import datetime
-from unittest import TestCase
 
 import pytz
+from django.test import TestCase
 
 from django_clickhouse.models import ClickHouseSyncModel
-from django_clickhouse.utils import get_tz_offset, format_datetime, lazy_class_import
+from django_clickhouse.utils import get_tz_offset, format_datetime, lazy_class_import, int_ranges
 
 
 class GetTZOffsetTest(TestCase):
@@ -54,3 +54,16 @@ class TestLazyClassImport(TestCase):
 
     def test_cls(self):
         self.assertEqual(ClickHouseSyncModel, lazy_class_import(ClickHouseSyncModel))
+
+
+class TestIntRanges(TestCase):
+    def test_simple(self):
+        self.assertListEqual([(1, 3), (5, 6), (8, 10)],
+                             list(int_ranges([1, 2, 3, 5, 6, 8, 9, 10])))
+
+    def test_empty(self):
+        self.assertListEqual([], list(int_ranges([])))
+
+    def test_bounds(self):
+        self.assertListEqual([(1, 1), (5, 6), (10, 10)],
+                             list(int_ranges([1, 5, 6, 10])))