utils/get_*_mirrors*.py: Ensure failure if no mirrors were read

This ensures that we do not accidentally build a package without
a mirror list, just because the servers have some error or empty
file which we do not know about (for example, Launchpad may have
a 503, and we would not notice).

2 files changed, 15 insertions, 2 deletions

diff --git a/utils/get_debian_mirrors.py b/utils/get_debian_mirrors.py
index c1ec3be8..4d34f5b6 100755
--- a/utils/get_debian_mirrors.py
+++ b/utils/get_debian_mirrors.py
@@ -17,7 +17,9 @@
 #  along with this program; if not, write to the Free Software
 #  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 #  USA
+from __future__ import print_function
 import collections
+import sys
 import urllib2
 from debian_bundle import deb822
 
@@ -36,6 +38,10 @@ for mirror in deb822.Deb822.iter_paragraphs(masterlist):
             mirrors[country].add("%s://%s%s" % (proto, site,
                                                 mirror["Archive-%s" % proto]))
 
+if len(mirrors) == 0:
+    print("E: Could not read the mirror list due to some unknown issue",
+          file=sys.stderr)
+    sys.exit(1)
 for country in sorted(mirrors):
-    print "#LOC:%s" % country
-    print "\n".join(sorted(mirrors[country]))
+    print("#LOC:%s" % country)
+    print("\n".join(sorted(mirrors[country])))
diff --git a/utils/get_ubuntu_mirrors_from_lp.py b/utils/get_ubuntu_mirrors_from_lp.py
index 6ff2d885..8fc34c8d 100755
--- a/utils/get_ubuntu_mirrors_from_lp.py
+++ b/utils/get_ubuntu_mirrors_from_lp.py
@@ -24,6 +24,7 @@
 #  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 #  USA
 
+import sys
 import feedparser
 
 d = feedparser.parse("https://launchpad.net/ubuntu/+archivemirrors-rss")
@@ -40,6 +41,12 @@ for entry in d.entries:
 
 
 keys = sorted(countries)
+
+if len(keys) == 0:
+    print("E: Could not read the mirror list due to some issue"
+          " -- status code: %s" % d.status, file=sys.stderr)
+    sys.exit(1)
+
 print("mirror://mirrors.ubuntu.com/mirrors.txt")
 for country in keys:
     print("#LOC:%s" % country)