Fix collecting data information from dashboards w/o targets slots

Some panels on play.grafana.org do not include `targets`.

Author: amotl

CHANGES.rst

@@ -8,6 +8,8 @@ in progress
 
 - Use 60 minutes as default cache TTL
 - Fix wrong ``jq`` commands in documentation. Thanks, @rahulnandan.
+- Fix collecting data information from dashboards w/o ``targets`` slots
+  in panels
 
 2023-10-03 0.16.0
 =================

grafana_wtf/model.py

@@ -2,12 +2,15 @@
 # (c) 2021 Andreas Motl <[email protected]>
 # License: GNU Affero General Public License, Version 3
 import dataclasses
+import logging
 from collections import OrderedDict
 from typing import Dict, List, Optional
 from urllib.parse import urljoin
 
 from munch import Munch
 
+logger = logging.getLogger(__name__)
+
 
 @dataclasses.dataclass
 class GrafanaDataModel:
@@ -138,9 +141,10 @@ def collect_data_details(self):
         targets = []
         for panel in ds_panels:
             panel_item = self._format_panel_compact(panel)
-            for target in panel.targets:
-                target["_panel"] = panel_item
-                targets.append(target)
+            if "targets" in panel:
+                for target in panel.targets:
+                    target["_panel"] = panel_item
+                    targets.append(target)
 
         response = OrderedDict(targets=targets, annotations=ds_annotations, templating=ds_templating)