[dak/master 1/3] Give slightly nicer error message on db conn failure

[Mark Hymers <mhy@debian.org>]

Signed-off-by: Mark Hymers <mhy@debian.org>
---
 daklib/dbconn.py |   24 +++++++++++++++---------
 1 files changed, 15 insertions(+), 9 deletions(-)

diff --git a/daklib/dbconn.py b/daklib/dbconn.py
index 6d954c8..7e9ff53 100755
--- a/daklib/dbconn.py
+++ b/daklib/dbconn.py
@@ -3664,15 +3664,21 @@ class DBConn(object):
 
         sqlalchemy.dialects.postgresql.base.dialect = PGDialect_psycopg2_dak
 
-        self.db_pg   = create_engine(connstr, **engine_args)
-        self.db_meta = MetaData()
-        self.db_meta.bind = self.db_pg
-        self.db_smaker = sessionmaker(bind=self.db_pg,
-                                      autoflush=True,
-                                      autocommit=False)
-
-        self.__setuptables()
-        self.__setupmappers()
+        try:
+            self.db_pg   = create_engine(connstr, **engine_args)
+            self.db_meta = MetaData()
+            self.db_meta.bind = self.db_pg
+            self.db_smaker = sessionmaker(bind=self.db_pg,
+                                          autoflush=True,
+                                          autocommit=False)
+
+            self.__setuptables()
+            self.__setupmappers()
+
+        except OperationalError, e:
+            import utils
+            utils.fubar("Cannot connect to database (%s)" % str(e))
+
         self.pid = os.getpid()
 
     def session(self, work_mem = 0):
-- 
1.7.2.5