r1083@denkpolster: jan | 2008-04-04 20:36:31 +0200

work on compatibility issues
  * make gnuviechadmin compatible with (fixes #6)
  * setup database at startup if necessary (fixes #8)


git-svn-id: file:///home/www/usr01/svn/gnuviechadmin/trunk@248 a67ec6bc-e5d5-0310-a910-815c51eb3124

gnuviechadmin/backend/BackendEntity.py

@@ -1,6 +1,7 @@
+# -*- python -*-
 # -*- coding: utf-8 -*-
 #
-# Copyright (C) 2007 by Jan Dittberner.
+# Copyright (C) 2007, 2008 by Jan Dittberner.
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -26,6 +27,7 @@ from gnuviechadmin.exceptions import *
 from gnuviechadmin.util import gpgmail
 from subprocess import *
 import sqlalchemy
+from sqlalchemy.orm import object_mapper
 
 class BackendEntity(object):
     """This is the abstract base class for all backend entity classes."""
@@ -92,7 +94,7 @@ class BackendEntity(object):
         values."""
         missingfields = []
         for key in [col.name for col in \
-                    sqlalchemy.object_mapper(
+                        object_mapper(
             self.delegateto).local_table.columns \
                     if not col.primary_key and not col.nullable]:
             if self.delegateto.__getattribute__(key) is None:

gnuviechadmin/backend/BackendEntityHandler.py

@@ -1,6 +1,7 @@
-# -*- coding: UTF-8 -*-
+# -*- python -*-
+# -*- coding: utf-8 -*-
 #
-# Copyright (C) 2007 by Jan Dittberner.
+# Copyright (C) 2007, 2008 by Jan Dittberner.
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -20,6 +21,7 @@
 # Version: $Id$
 
 import sqlalchemy, logging
+from sqlalchemy.orm import create_session
 from gnuviechadmin.exceptions import *
 from BackendEntity import *
 
@@ -35,7 +37,7 @@ class BackendEntityHandler(object):
         """Create a new entity of the managed type with the fields set
         to the values in kwargs."""
         self.logger.debug("create with params %s", str(kwargs))
-        sess = sqlalchemy.create_session()
+        sess = create_session()
         transaction = sess.create_transaction()
         delegate = self.toclass(**kwargs)
         entity = self.entityclass(delegate, self.verbose)            
@@ -54,12 +56,12 @@ class BackendEntityHandler(object):
     def fetchall(self, **kwargs):
         """Fetches all entities of the managed entity type."""
         self.logger.debug("fetchall with params %s", str(kwargs))
-        session = sqlalchemy.create_session()
+        session = create_session()
         query = session.query(self.toclass)
         if kwargs:
-            allentities = query.select_by(**kwargs)
+            allentities = query.filter_by(**kwargs).all()
         else:
-            allentities = query.select()
+            allentities = query.all()
         return [self.entityclass(entity, self.verbose) \
                 for entity in allentities]
 
@@ -67,7 +69,7 @@ class BackendEntityHandler(object):
         """Deletes the entity of the managed entity type that has the
         specified primary key value."""
         self.logger.debug("delete with primary key %s", str(pkvalue))
-        sess = sqlalchemy.create_session()
+        sess = create_session()
         transaction = sess.create_transaction()
         try:
             to = sess.query(self.toclass).get(pkvalue)

gnuviechadmin/backend/BackendTo.py

@@ -1,3 +1,4 @@
+# -*- python -*-
 # -*- coding: utf-8 -*-
 #
 # Copyright (C) 2007, 2008 by Jan Dittberner.
@@ -19,7 +20,7 @@
 #
 # Version: $Id$
 
-from sqlalchemy.orm import object_mapper
+from sqlalchemy.orm import object_mapper, mapper, relation
 
 from tables import *
 

gnuviechadmin/backend/tables.py

@@ -1,3 +1,4 @@
+# -*- python -*-
 # -*- coding: utf-8 -*-
 #
 # Copyright (C) 2007, 2008 by Jan Dittberner.
@@ -30,19 +31,34 @@ try:
         config.get('database', 'uri'),
         config.get('database', 'repository'))
     if dbversion < required_version:
-        print("""Database version is %d but required version is %d, run
-
- migrate upgrade %s %s
-
-to fix this.""" %
-              (dbversion, required_version, config.get('database', 'uri'),
-               config.get('database', 'repository')))
+        print("""Database version is %d but required version is %d. Trying automatic upgrade.""" %
+              (dbversion, required_version))
+        try:
+            migrate.versioning.api.upgrade(
+                config.get('database', 'uri'),
+                config.get('database', 'repository'),
+                required_version)
+        except:
+            print "Automatic upgrade failed."
+            raise
+    elif dbversion > required_version:
+        print("""Database version is %d which is higher than the required version %d. I cannot handle this situation without possible data loss.""" %
+              (dbversion, required_version))
         sys.exit(1)
 except NoSuchTableError, nste:    
-    print nste
-    sys.exit(1)
+    print """The database is not versioned. Trying automatic versioning."""
+    try:
+        migrate.versioning.api.version_control(
+            config.get('database', 'uri'),
+            config.get('database', 'repository'))
+        migrate.versioning.api.upgrade(
+            config.get('database', 'uri'),
+            config.get('database', 'repository', required_version))
+    except:
+        print "Automatic setup failed."
+        raise
 
-meta = BoundMetaData(config.get('database', 'uri'))
+meta = MetaData(config.get('database', 'uri'))
 #meta.engine.echo = True
 client_table = Table('client', meta, schema = dbschema, autoload = True)
 sysuser_table = Table('sysuser', meta, schema = dbschema, autoload = True)

gnuviechadmin/gva.cfg.tmpl

@@ -1,6 +1,7 @@
 # -*- python -*-
+# -*- coding: utf-8 -*-
 #
-# Copyright (C) 2007 by Jan Dittberner.
+# Copyright (C) 2007, 2008 by Jan Dittberner.
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by