ERP5Catalog: add support for multiples databases in upgradeSchema

This is needed to support datawarehouse on another database.

product/ERP5Catalog/CatalogTool.py

@@ -42,6 +42,7 @@ from Acquisition import aq_base, aq_inner, aq_parent, ImplicitAcquisitionWrapper
 from Products.CMFActivity.ActiveObject import ActiveObject
 from Products.CMFActivity.ActivityTool import GroupedMessage
 from Products.ERP5Type.TransactionalVariable import getTransactionalVariable
+from Products.ZMySQLDA.DA import DeferredConnection
 
 from AccessControl.PermissionRole import rolesForPermissionOn
 
@@ -1360,20 +1361,45 @@ class CatalogTool (UniqueObject, ZCatalog, CMFCoreCatalogTool, ActiveObject):
     security.declareProtected(Permissions.ManagePortal, 'upgradeSchema')
     def upgradeSchema(self, sql_catalog_id=None, src__=0):
       """Upgrade all catalog tables, with ALTER or CREATE queries"""
+      portal = self.getPortalObject()
       catalog = self.getSQLCatalog(sql_catalog_id)
-      connection_id = catalog.z_create_catalog.connection_id
-      src = []
-      db = self.getPortalObject()[connection_id]()
-      with db.lock():
-        for clear_method in catalog.sql_clear_catalog:
-          r = catalog[clear_method]._upgradeSchema(
-            connection_id, create_if_not_exists=1, src__=1)
-          if r:
-            src.append(r)
-        if not src__:
-          for r in src:
-            db.query(r)
-      return src
+
+      # group methods by connection
+      method_list_by_connection_id = defaultdict(list)
+      for method_id in catalog.sql_clear_catalog:
+        method = catalog[method_id]
+        method_list_by_connection_id[method.connection_id].append(method)
+
+      # Because we cannot select on deferred connections, _upgradeSchema
+      # cannot be used on SQL methods using a deferred connection.
+      # We try to find a "non deferred" connection using the same connection
+      # string and we'll use it instead.
+      connection_by_connection_id = {}
+      for connection_id in method_list_by_connection_id:
+        connection = portal[connection_id]
+        connection_string = connection.connection_string
+        connection_by_connection_id[connection_id] = connection
+        if isinstance(connection, DeferredConnection):
+          for other_connection in portal.objectValues(
+                spec=('Z MySQL Database Connection',)):
+            if connection_string == other_connection.connection_string:
+              connection_by_connection_id[connection_id] = other_connection
+              break
+
+      queries_by_connection_id = defaultdict(list)
+      for connection_id, method_list in method_list_by_connection_id.items():
+        connection = connection_by_connection_id[connection_id]
+        db = connection()
+        with db.lock():
+          for method in method_list:
+            query = method._upgradeSchema(connection.getId(), create_if_not_exists=1, src__=1)
+            if query:
+              queries_by_connection_id[connection_id].append(query)
+          if not src__:
+            for query in queries_by_connection_id[connection_id]:
+              db.query(query)
+
+      return sum(queries_by_connection_id.values(), [])
 
     security.declarePublic('getDocumentValueList')
     def getDocumentValueList(self, sql_catalog_id=None,

product/ERP5Catalog/tests/testERP5Catalog.py

@@ -34,6 +34,7 @@ import httplib
 from AccessControl import getSecurityManager
 from AccessControl.SecurityManagement import newSecurityManager
 from DateTime import DateTime
+from _mysql_exceptions import ProgrammingError
 from OFS.ObjectManager import ObjectManager
 from Products.ERP5Type.tests.ERP5TypeTestCase import ERP5TypeTestCase
 from Products.ERP5Type.tests.utils import LogInterceptor, createZODBPythonScript, todo_erp5, getExtraSqlConnectionStringList
@@ -3842,8 +3843,9 @@ class CatalogToolUpgradeSchemaTestCase(ERP5TypeTestCase):
     db1, db2 = getExtraSqlConnectionStringList()[:2]
     addConnection = self.portal.manage_addProduct[
         "ZMySQLDA"].manage_addZMySQLConnection
-    addConnection("erp5_test_connection_1", '', db1)
-    addConnection("erp5_test_connection_2", '', db2)
+    addConnection("erp5_test_connection_1", "", db1)
+    addConnection("erp5_test_connection_2", "", db2)
+    addConnection("erp5_test_connection_deferred_2", "", db2, deferred=True)
 
     self.catalog_tool = self.portal.portal_catalog
     self.catalog = self.catalog_tool.newContent(portal_type="Catalog")
@@ -3862,8 +3864,10 @@ class CatalogToolUpgradeSchemaTestCase(ERP5TypeTestCase):
       self.query_connection_1("DROP TABLE IF EXISTS `%s`" % table)
     for table in self._db2_table_list:
       self.query_connection_2("DROP TABLE IF EXISTS `%s`" % table)
-    self.portal.manage_delObjects(
-        ["erp5_test_connection_1", "erp5_test_connection_2"])
+    self.portal.manage_delObjects([
+            "erp5_test_connection_1",
+            "erp5_test_connection_2",
+            "erp5_test_connection_deferred_2"])
     self.commit()
 
   def query_connection_1(self, q):
@@ -3911,3 +3915,50 @@ class CatalogToolUpgradeSchemaTestCase(ERP5TypeTestCase):
     self.upgradeSchema()
     self.commit()
     self.query_connection_1("SELECT b from altered_table")
+
+  def test_upgradeSchema_multi_connections(self):
+    # Check that we can upgrade tables on more than one connection,
+    # like when using an external datawarehouse. This is a reproduction
+    # for https://nexedi.erp5.net/bug_module/20170426-A3962E
+    # In this test we use both "normal" and deferred connections,
+    # which is what happens in default erp5 catalog.
+    self._db1_table_list.append("table1")
+    self.query_connection_1("CREATE TABLE table1 (a int)")
+    self._db2_table_list.extend(("table2", "table_deferred2"))
+    self.query_connection_2("CREATE TABLE table2 (a int)")
+    self.query_connection_2("CREATE TABLE table_deferred2 (a int)")
+    self.commit()
+
+    method1 = self.catalog.newContent(
+        portal_type="SQL Method",
+        connection_id="erp5_test_connection_1",
+        src="CREATE TABLE table1 (a int, b int)")
+    method2 = self.catalog.newContent(
+        portal_type="SQL Method",
+        connection_id="erp5_test_connection_2",
+        src="CREATE TABLE table2 (a int, b int)")
+    method_deferred2 = self.catalog.newContent(
+        portal_type="SQL Method",
+        connection_id="erp5_test_connection_deferred_2",
+        src="CREATE TABLE table_deferred2 (a int, b int)")
+    self.catalog.setSqlClearCatalogList(
+        [method1.getId(),
+         method2.getId(),
+         method_deferred2.getId()])
+    self.commit()
+
+    self.upgradeSchema()
+    self.commit()
+    self.query_connection_1("SELECT b from table1")
+    self.query_connection_2("SELECT b from table2")
+    self.query_connection_2("SELECT b from table_deferred2")
+
+    with self.assertRaisesRegexp(ProgrammingError,
+                                 r"Table '.*\.table2' doesn't exist"):
+      self.query_connection_1("SELECT b from table2")
+    with self.assertRaisesRegexp(ProgrammingError,
+                                 r"Table '.*\.table_deferred2' doesn't exist"):
+      self.query_connection_1("SELECT b from table_deferred2")
+    with self.assertRaisesRegexp(ProgrammingError,
+                                 r"Table '.*\.table1' doesn't exist"):
+      self.query_connection_2("SELECT b from table1")