[dak/bpo] update db

[Joerg Jaspert <joerg@debian.org>]

(hopefully) fix the bug that dak update-db happily ignores errors
from the update scripts, going on with all the other following updates.
Which isn't all that helpful.

Signed-off-by: Joerg Jaspert <joerg@debian.org>
---
 dak/dakdb/update1.py     |    8 ++++----
 dak/dakdb/update2.py     |    8 ++++----
 dak/dakdb/update3.py     |    8 ++++----
 dak/update_db.py         |   12 +++++++++---
 daklib/dak_exceptions.py |    3 ++-
 5 files changed, 23 insertions(+), 16 deletions(-)

diff --git a/dak/dakdb/update1.py b/dak/dakdb/update1.py
index 7778b1b..ff2b62e 100755
--- a/dak/dakdb/update1.py
+++ b/dak/dakdb/update1.py
@@ -24,7 +24,9 @@
 
 ################################################################################
 
-import psycopg2, time
+import psycopg2
+import time
+from daklib.dak_exceptions import DBUpdateError
 
 ################################################################################
 
@@ -59,6 +61,4 @@ def do_update(self):
 
     except psycopg2.ProgrammingError, msg:
         self.db.rollback()
-        print "FATAL: Unable to apply DM table update 1!"
-        print "Error Message: " + str(msg)
-        print "Database changes have been rolled back."
+        raise DBUpdateError, "Unable to appy DM table updates, rollback issued. Error message : %s" % (str(msg)
diff --git a/dak/dakdb/update2.py b/dak/dakdb/update2.py
index 71b43fa..b1ba672 100755
--- a/dak/dakdb/update2.py
+++ b/dak/dakdb/update2.py
@@ -21,7 +21,9 @@
 
 ################################################################################
 
-import psycopg2, time
+import psycopg2
+import time
+from daklib.dak_exceptions import DBUpdateError
 
 ################################################################################
 
@@ -391,6 +393,4 @@ $$
 
     except psycopg2.ProgrammingError, msg:
         self.db.rollback()
-        print "FATAL: Unable to apply debversion table update 2!"
-        print "Error Message: " + str(msg)
-        print "Database changes have been rolled back."
+        raise DBUpdateError, "Unable to appy debversion updates, rollback issued. Error message : %s" % (str(msg)
diff --git a/dak/dakdb/update3.py b/dak/dakdb/update3.py
index df89fb9..3a628de 100755
--- a/dak/dakdb/update3.py
+++ b/dak/dakdb/update3.py
@@ -20,7 +20,9 @@
 
 ################################################################################
 
-import psycopg2, time
+import psycopg2
+import time
+from daklib.dak_exceptions import DBUpdateError
 
 ################################################################################
 
@@ -36,6 +38,4 @@ def do_update(self):
 
     except psycopg2.ProgrammingError, msg:
         self.db.rollback()
-        print "FATAL: Unable to apply db update 3!"
-        print "Error Message: " + str(msg)
-        print "Database changes have been rolled back."
+        raise DBUpdateError, "Unable to appy versioncmp removal, rollback issued. Error message : %s" % (str(msg)
diff --git a/dak/update_db.py b/dak/update_db.py
index f9b6e47..5d5fef4 100755
--- a/dak/update_db.py
+++ b/dak/update_db.py
@@ -137,9 +137,15 @@ Updates dak's database schema to the lastest version. You should disable crontab
 
         for i in range (database_revision, required_database_schema):
             print "updating databse schema from " + str(database_revision) + " to " + str(i+1)
-            dakdb = __import__("dakdb", globals(), locals(), ['update'+str(i+1)])
-            update_module = getattr(dakdb, "update"+str(i+1))
-            update_module.do_update(self)
+            try:
+                dakdb = __import__("dakdb", globals(), locals(), ['update'+str(i+1)])
+                update_module = getattr(dakdb, "update"+str(i+1))
+                update_module.do_update(self)
+            except DBUpdateError, e:
+                # Seems the update did not work.
+                print "Was unable to update database schema from %s to %s." % (str(database_revision), str(i+1))
+                print "The error message received was %s" % (e)
+                utils.fubar("DB Schema upgrade failed")
             database_revision += 1
 
 ################################################################################
diff --git a/daklib/dak_exceptions.py b/daklib/dak_exceptions.py
index b210a6f..d18bee1 100755
--- a/daklib/dak_exceptions.py
+++ b/daklib/dak_exceptions.py
@@ -57,7 +57,8 @@ dakerrors = {
     "SendmailFailedError": """Exception raised when Sendmail invocation failed.""",
     "NoFreeFilenameError": """Exception raised when no alternate filename was found.""",
     "TransitionsError":    """Exception raised when transitions file can't be parsed.""",
-    "NoSourceFieldError":  """Exception raised - we cant find the source - wtf?"""
+    "NoSourceFieldError":  """Exception raised - we cant find the source - wtf?""",
+    "DBUpdateError":       """Exception raised - could not update the database"""
 } #: All dak exceptions
 
 def construct_dak_exception(name, description):
-- 
1.5.6.5