[manual] Move puppet modules to the top level

The new puppet.conf file has to be moved into place manually.

(imported from commit 253d9a95386dae8c803a998ce2dc7e8be40c880a)

puppet/zulip-internal/files/postgresql/pg_backup_and_purge.py

@@ -0,0 +1,51 @@
+#!/usr/bin/python
+
+import subprocess
+import sys
+import logging
+import dateutil.parser
+import pytz
+from datetime import datetime, timedelta
+
+logging.basicConfig(format="%(asctime)s %(levelname)s: %(message)s")
+logger = logging.getLogger(__name__)
+
+def run(args, dry_run=False):
+    if dry_run:
+        print "Would have run: " + " ".join(args)
+        return ""
+
+    p = subprocess.Popen(args, stdin=subprocess.PIPE, stdout=subprocess.PIPE,
+                         stderr=subprocess.PIPE)
+    stdout, stderr = p.communicate()
+    if p.returncode:
+        logger.error("Could not invoke %s\nstdout: %s\nstderror: %s"
+                     % (args[0], stdout, stderr))
+        sys.exit(1)
+    return stdout
+
+# Only run if we're the master
+if run(['psql', '-t', '-c', 'select pg_is_in_recovery()']).strip() != 'f':
+    sys.exit(0)
+
+run(['env-wal-e', 'backup-push', '/var/lib/postgresql/9.1/main'])
+
+now = datetime.now(tz=pytz.utc)
+with open('/var/lib/nagios_state/last_postgres_backup', 'w') as f:
+    f.write(now.isoformat())
+    f.write("\n")
+
+backups = {}
+lines = run(['env-wal-e', 'backup-list']).split("\n")
+for line in lines[1:]:
+    if line:
+        backup_name, date, _, _ = line.split()
+        backups[dateutil.parser.parse(date)] = backup_name
+
+one_month_ago = now - timedelta(days=30)
+for date in sorted(backups.keys(), reverse=True):
+    if date < one_month_ago:
+        run(['env-wal-e', 'delete', '--confirm', 'before', backups[date]])
+        # Because we're going from most recent to least recent, we
+        # only have to do one delete operation
+        break