aktualizr: retry garage-sign version check and handle errors better.

1 files changed, 15 insertions, 2 deletions

diff --git a/recipes-sota/aktualizr/garage-sign-version.inc b/recipes-sota/aktualizr/garage-sign-version.inc
index f2d04e8..1b89a3d 100644
--- a/recipes-sota/aktualizr/garage-sign-version.inc
+++ b/recipes-sota/aktualizr/garage-sign-version.inc
@@ -11,8 +11,21 @@ python () {
                 url = url_file.read().decode().strip(' \t\n') + '/health/version'
         except (KeyError, ValueError, RuntimeError):
             return
-    r = urllib.request.urlopen(url)
-    if r.code != 200:
+    connected = False
+    tries = 3
+    for i in range(tries):
+        try:
+            r = urllib.request.urlopen(url)
+            if r.code == 200:
+                connected = True
+                break
+            else:
+                print('Bad return code from server ' + url + ': ' + str(r.code) +
+                      ' (attempt ' + str(i + 1) + ' of ' + str(tries) + ')')
+        except urllib.error.URLError as e:
+            print('Error connecting to server ' + url + ': ' + str(e) +
+                  ' (attempt ' + str(i + 1) + ' of ' + str(tries) + ')')
+    if not connected:
         return
     resp = r.read().decode('utf-8')
     j = json.loads(resp)