diff -r 2911935c524d -r 2fcc8ef0b97d pgtoolkit/toolbase.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/pgtoolkit/toolbase.py	Tue Aug 16 16:03:46 2011 +0200
@@ -0,0 +1,59 @@
+import argparse
+
+from pgtookit import pgmanager, config
+
+
+class ToolBase:
+    def __init__(self, name, desc):
+        self.parser = argparse.ArgumentParser(description=desc)
+        
+        self.config = config.ConfigParser()
+        self.config.add_argument('databases', type=dict)
+        self.config.add_argument('meta_db')
+        self.config.add_argument('meta_query')
+        
+        self.pgm = pgmanager.get_instance()
+        
+    def init(self):
+        self.config.load('pgtoolkit.conf')
+        self.args = self.parser.parse_args()
+
+    def buildconn(self, name, targetname):
+        with self.pgm.cursor('meta') as curs:
+            curs.execute(self.config.meta_query, [targetname])
+            row = curs.fetchone_dict()
+            curs.connection.commit()
+            
+            if not row:
+                raise Exception('Unknown database "%s"' % targetname)
+            
+            self.pgm.create_conn(name=name, **row)
+
+    def prepareconns(self, *args):        
+        if self.config.meta_db:
+            self.pgm.create_conn(name='meta', dsn=self.config.meta_db)
+            for name in args:
+                self.buildconn(name, self.args.__dict__[name])
+            self.pgm.close_conn('meta')
+
+
+class SimpleTool(ToolBase):
+    def __init__(self, name, desc):
+        ToolBase.__init__(self, name, desc)        
+        self.parser.add_argument('target', metavar='target', type=str, help='Target database')
+      
+    def init(self):
+        ToolBase.init(self)
+        self.prepareconns('target')
+
+
+class SrcDstTool(ToolBase):
+    def __init__(self, name, desc):
+        ToolBase.__init__(self, name, desc)        
+        self.parser.add_argument('src', metavar='source', type=str, help='Source database')
+        self.parser.add_argument('dst', metavar='destination', type=str, help='Destination database')
+      
+    def init(self):
+        ToolBase.init(self)
+        self.prepareconns('src', 'dst')
+