Make tests pass

src/infi/clickhouse_orm/database.py

@@ -328,8 +328,12 @@ class Database(object):
             return pytz.utc
 
     def _get_server_version(self, as_tuple=True):
-        r = self._send('SELECT version();')
-        ver = r.text
+        try:
+            r = self._send('SELECT version();')
+            ver = r.text
+        except ServerError as e:
+            logger.exception('Cannot determine server version (%s), assuming 1.1.0', e)
+            ver = '1.1.0'
         return tuple(int(n) for n in ver.split('.')) if as_tuple else ver
 
     def _is_connection_readonly(self):

src/infi/clickhouse_orm/engines.py

@@ -197,7 +197,7 @@ class Merge(Engine):
         self.table_regex = table_regex
 
     def create_table_sql(self, db):
-        self.db_name = None + return "Merge(`%s`, '%s')" % (db.db_name, self.table_regex)
+        return "Merge(`%s`, '%s')" % (db.db_name, self.table_regex)
 
 
 class Distributed(Engine):
@@ -210,20 +210,17 @@ class Distributed(Engine):
     See full documentation here
     https://clickhouse.yandex/docs/en/table_engines/distributed.html
     """
-    def __init__(self, cluster, table=None, db_name=None, sharding_key=None):
+    def __init__(self, cluster, table=None, sharding_key=None):
         """
         :param cluster: what cluster to access data from
         :param table: underlying table that actually stores data.
         If you are not specifying any table here, ensure that it can be inferred
         from your model's superclass (see models.DistributedModel.fix_engine_table)
-        :param db_name: which database to access data from
-        By default it is 'currentDatabase()'
         :param sharding_key: how to distribute data among shards when inserting
         straightly into Distributed table, optional
         """
         self.cluster = cluster
         self.table = table
-        self.db_name = db_name
         self.sharding_key = sharding_key
 
     @property
@@ -238,23 +235,17 @@ class Distributed(Engine):
 
         return table
 
-    def set_db_name(self, db_name):
-        assert isinstance(db_name, six.string_types), "'db_name' parameter must be string"
-        self.db_name = db_name
-
-    def create_table_sql(self):
+    def create_table_sql(self, db):
         name = self.__class__.__name__
-        params = self._build_sql_params()
+        params = self._build_sql_params(db)
         return '%s(%s)' % (name, ', '.join(params))
 
-    def _build_sql_params(self):
-        db_name = ("`%s`" % self.db_name) if self.db_name else 'currentDatabase()'
-
+    def _build_sql_params(self, db):
         if self.table_name is None:
             raise ValueError("Cannot create {} engine: specify an underlying table".format(
                 self.__class__.__name__))
 
-        params = [self.cluster, db_name, self.table_name]
+        params = ["`%s`" % p for p in [self.cluster, db.db_name, self.table_name]]
         if self.sharding_key:
             params.append(self.sharding_key)
         return params

src/infi/clickhouse_orm/models.py

@@ -304,7 +304,6 @@ class DistributedModel(Model):
     def set_database(self, db):
         assert isinstance(self.engine, Distributed), "engine must be engines.Distributed instance"
         res = super(DistributedModel, self).set_database(db)
-        self.engine.set_db_name(db.db_name)
         return res
 
     @classmethod
@@ -359,16 +358,13 @@ class DistributedModel(Model):
         cls.engine.table = storage_models[0]
 
     @classmethod
-    def create_table_sql(cls, db_name):
+    def create_table_sql(cls, db):
         assert isinstance(cls.engine, Distributed), "engine must be engines.Distributed instance"
-        cls.engine.set_db_name(db_name)
 
         cls.fix_engine_table()
 
         parts = [
             'CREATE TABLE IF NOT EXISTS `{0}`.`{1}` AS `{0}`.`{2}`'.format(
-                db_name, cls.table_name(), cls.engine.table_name),
-            'ENGINE = ' + cls.engine.create_table_sql()]
+                db.db_name, cls.table_name(), cls.engine.table_name),
+            'ENGINE = ' + cls.engine.create_table_sql(db)]
         return '\n'.join(parts)
-        cls.engine.set_db_name(db_name)
-        return super(MergeModel, cls).create_table_sql(db_name)

tests/test_engines.py

@@ -1,18 +1,9 @@
 from __future__ import unicode_literals
 import unittest
 
-<<<<<<< HEAD
+from infi.clickhouse_orm.system_models import SystemPart
 from infi.clickhouse_orm.database import Database, DatabaseException, ServerError
 from infi.clickhouse_orm.models import Model, MergeModel, DistributedModel
-||||||| merged common ancestors
-from infi.clickhouse_orm.database import Database, DatabaseException
-from infi.clickhouse_orm.models import Model, MergeModel
-=======
-from infi.clickhouse_orm.system_models import SystemPart
-
-from infi.clickhouse_orm.database import Database, DatabaseException
-from infi.clickhouse_orm.models import Model, MergeModel
->>>>>>> 7fb05896926acab163a1f373092bf22cc0f3cb4f
 from infi.clickhouse_orm.fields import *
 from infi.clickhouse_orm.engines import *
 
@@ -167,15 +158,15 @@ class DistributedTestCase(_EnginesHelperTestCase):
         engine = Distributed('my_cluster')
 
         with self.assertRaises(ValueError) as cm:
-            engine.create_table_sql()
+            engine.create_table_sql(self.database)
 
         exc = cm.exception
         self.assertEqual(str(exc), 'Cannot create Distributed engine: specify an underlying table')
 
     def test_with_table_name(self):
         engine = Distributed('my_cluster', 'foo')
-        sql = engine.create_table_sql()
-        self.assertEqual(sql, 'Distributed(my_cluster, currentDatabase(), foo)')
+        sql = engine.create_table_sql(self.database)
+        self.assertEqual(sql, 'Distributed(`my_cluster`, `test-db`, `foo`)')
 
     class TestModel(SampleModel):
         engine = TinyLog()