Add channel scanning by channel name

Author: nikodemas

grafana_wtf/commands.py

@@ -41,6 +41,7 @@ def run():
       grafana-wtf [options] plugins list [--id=]
       grafana-wtf [options] plugins status [--id=]
       grafana-wtf [options] channels [--uid=]
+      grafana-wtf [options] channels [--name=]
       grafana-wtf --version
       grafana-wtf (-h | --help)
 
@@ -352,6 +353,8 @@ def run():
     if options.channels:
         if options.uid:
             response = engine.channels_list_by_uid(options.uid)
+        elif options.name:
+            response = engine.channels_list_by_name(options.name)
         else:
             response = engine.channels_list()
         output_results(output_format, response)

grafana_wtf/core.py

@@ -616,7 +616,11 @@ def channels_list(self):
         return self.grafana.notifications.lookup_channels()
 
     def channels_list_by_uid(self, channel_uid):
-        channel = self.grafana.notifications.get_channel_by_uid(channel_uid)
+        try:
+            channel = self.grafana.notifications.get_channel_by_uid(channel_uid)
+        except GrafanaClientError as ex:
+            log.error(f"Error fetching the channel {channel_uid}: {ex}")
+            raise SystemExit(1)
 
         # Scan dashboards and panels to find where the channel is used
         dashboards = self.scan_dashboards()
@@ -649,6 +653,19 @@ def extract_channel_related_information(channel_uid, dashboard, panel):
                 )
         return related_information
 
+    def channels_list_by_name(self, name):
+        channel_list = self.channels_list()
+        channel_uid = ""
+        for channel in channel_list:
+            if channel["name"] == name:
+                channel_uid = channel["uid"]
+                break
+        if channel_uid:
+            return self.channels_list_by_uid(channel_uid)
+        else:
+            log.info(f"Channel with the name {name} doesn't exist")
+            raise SystemExit(0)
+
 
 class Indexer:
     def __init__(self, engine: GrafanaWtf):