Update Performancebug rules and Template

Author: PromiseFru

bugbot/rules/performancebug.py

@@ -10,7 +10,7 @@
 class PerformanceBug(BzCleaner):
     def __init__(self):
         super().__init__()
-        self.autofix_performance_impact = {}
+        self.autofix_bugs = []
 
     def description(self):
         return "[Using ML] Bugs with Missing Performance Impact"
@@ -65,6 +65,9 @@ def get_bugs(self, date="today", bug_ids=[]):
             bug = raw_bugs[bug_id]
             prob = bug_data["prob"]
 
+            if prob[1] < 0.2:
+                continue
+
             results[bug_id] = {
                 "id": bug_id,
                 "summary": bug["summary"],
@@ -75,12 +78,23 @@ def get_bugs(self, date="today", bug_ids=[]):
             # Only autofix results for which we are sure enough.
             if prob[1] >= self.get_config("confidence_threshold"):
                 results[bug_id]["autofixed"] = True
-                self.autofix_performance_impact[bug_id] = {"cf_performance_impact": "?"}
+                self.autofix_bugs.append((bug_id, prob[1]))
 
         return results
 
     def get_autofix_change(self):
-        return self.autofix_performance_impact
+        autofix_change = {}
+        for bug_id, confidence in self.autofix_bugs:
+            autofix_change[bug_id] = {
+                "cf_performance_impact": "?",
+            }
+
+            if confidence != 1.0:
+                autofix_change[bug_id]["comment"] = {
+                    "body": "The [Bugbug](https://github.com/mozilla/bugbug/) bot thinks this bug is a performance bug, but please revert this change in case of error."
+                }
+
+        return autofix_change
 
 
 if __name__ == "__main__":

configs/rules.json

@@ -419,6 +419,11 @@
     "confidence_threshold": 0.95,
     "cc": []
   },
+  "performancebug": {
+    "max_days_in_cache": 7,
+		"days_lookup": 7,
+		"confidence_threshold": 0.9
+	},
   "stepstoreproduce": {
     "max_days_in_cache": 7,
     "days_lookup": 3,

templates/performancebug.html

@@ -0,0 +1,25 @@
+<p>
+    The following {{ plural('bug is', data, pword='bugs are') }} probably performance related and {{ plural('doesn\'t', data, pword='don\'t') }} have performance impact value:
+</p>
+<table {{ table_attrs }}>
+    <thead>
+        <tr>
+            <th>Bug</th>
+            <th>Summary</th>
+            <th>Confidence (%)</th>
+        </tr>
+    </thead>
+    <tbody>
+        {% for i, (bugid, summary, confidence, autofixed) in enumerate(data) -%}
+            <tr {% if i % 2 == 0 %}bgcolor="#E0E0E0"
+            {% endif -%}
+            >
+            <td>
+                <a href="https://bugzilla.mozilla.org/show_bug.cgi?id={{ bugid }}">{{ bugid }}</a>
+            </td>
+            <td>{{ summary | e }}</td>
+            <td {% if autofixed %}bgcolor="#00FF00"{% endif -%}>{{ confidence }}</td>
+        </tr>
+    {% endfor -%}
+</tbody>
+</table>