[api] fallback to query all bugzilla states, if the api call to list …

…just the new ones fails since two days.

That way we get finally updates again. It helps hopefully also bugzilla to avoid timeouts by requesting
smaller lists after some timeout again.

src/api/app/models/issue_tracker.rb

@@ -57,6 +57,12 @@ def update_issues
       begin
         result = bugzilla_server.search(:last_change_time => self.issues_updated)
       rescue Net::ReadTimeout
+        if (self.issues_updated + 2.days).past?
+           # failures since two days? 
+           # => enforce a full update in small steps to avoid over load at bugzilla side
+           enforced_update_all_issues
+           return true
+        end
         return false
       end
       ids = result["bugs"].map { |x| x["id"].to_i }
@@ -92,11 +98,12 @@ def update_issues
     return false
   end
 
-  # this function is usually never called. Just for debugging and disaster recovery
+  # this function is for debugging and disaster recovery
   def enforced_update_all_issues
     @update_time_stamp = Time.at(Time.now.to_f - 5)
 
     ids = issues.map { |x| x.name.to_s }
+    ids.sort! { |x,y| y <=> x } # backward
 
     if private_fetch_issues(ids)
       self.issues_updated = @update_time_stamp
@@ -159,7 +166,7 @@ def parse_single_bugzilla_issue(r)
         issue.state = Issue.bugzilla_state(r["status"])
       end
       u = User.find_by_email(r["assigned_to"].to_s)
-      logger.info "Bug user #{r["assigned_to"].to_s} is not found in OBS user database" unless u
+      logger.info "Bugzilla user #{r["assigned_to"].to_s} is not found in OBS user database" unless u
       issue.owner_id = u.id if u
       issue.updated_at = @update_time_stamp
       if r["is_private"]