From: Ismaël Bouya <ismael.bouya@normalesup.org>
Date: Sun, 27 Jun 2021 00:16:45 +0000 (+0200)
Subject: Only initiate connection on demand for buildbot workers
X-Git-Url: https://git.immae.eu/?p=perso%2FImmae%2FConfig%2FNix.git;a=commitdiff_plain;h=2256f2e2ac90edb0fc5dd8de96f4e7bf2aa14d65

Only initiate connection on demand for buildbot workers
---

diff --git a/modules/private/buildbot/common/libvirt.py b/modules/private/buildbot/common/libvirt.py
index 85fd908..e250627 100644
--- a/modules/private/buildbot/common/libvirt.py
+++ b/modules/private/buildbot/common/libvirt.py
@@ -154,7 +154,19 @@ class Connection:
 
     def __init__(self, uri):
         self.uri = uri
-        self.connection = libvirt.open(uri)
+        self._connection = None
+
+    @property
+    def connection(self):
+        if self._connection is not None:
+            try:
+                if not self._connection.isAlive():
+                    self._connection = None
+            except:
+                self._connection = None
+        if self._connection is None:
+            self._connection = libvirt.open(self.uri)
+        return self._connection
 
     @defer.inlineCallbacks
     def create(self, xml):