[Findit] Fracas crash triage dashboard

appengine/findit/handlers/crash/fracas_dashboard.py

+# Copyright 2016 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+from datetime import datetime
+from datetime import time
+from datetime import timedelta
+import json
+
+from common import time_util
+from common.base_handler import BaseHandler
+from common.base_handler import Permission
+from model.crash.fracas_crash_analysis import FracasCrashAnalysis
+
+
+_EQUAL_FILTER_TO_CONVERTER = {
+    'found_suspects': lambda x: x == 'yes',
+    'has_regression_range': lambda x: x == 'yes',
+    'suspected_cls_triage_status': int,
+    'regression_range_triage_status': int,
+}
+
+_DEFAULT_DISPLAY_COUNT = 500
+
+
+class FracasDashBoard(BaseHandler):
+  PERMISSION_LEVEL = Permission.ANYONE
+
+  def HandleGet(self):
+    """Shows Fracas crash analysis results in an HTML page."""
+    midnight_today = datetime.combine(datetime.utcnow(), time.min)
+    midnight_yesterday = midnight_today - timedelta(days=1)
+    midnight_tomorrow = midnight_today + timedelta(days=1)
+
+    start = self.request.get('start_date')
+    end = self.request.get('end_date')
+    start_date = (datetime.strptime(start, '%Y-%m-%d') if start else
+                  midnight_yesterday)
+    end_date = (datetime.strptime(end, '%Y-%m-%d') if end else
+                midnight_tomorrow)
+
+    if start or not end:  # pragma: no branch
+      # If a start date is specified, get everything since then.
+      query = FracasCrashAnalysis.query(
+          FracasCrashAnalysis.requested_time >= start_date,
+          FracasCrashAnalysis.requested_time < end_date
+      )
+    else:  # pragma: no cover
+      # If no start date specified, then get everything up until end_date.
+      start_date = None
+      query = FracasCrashAnalysis.query(
+          FracasCrashAnalysis.requested_time < end_date
+      )
+
+    for equal_filter, converter in _EQUAL_FILTER_TO_CONVERTER.iteritems():
+      if not self.request.get(equal_filter):
+        continue
+
+      query = query.filter(
+          getattr(FracasCrashAnalysis, equal_filter) ==
+          converter(self.request.get(equal_filter)))
+
+    if self.request.get('count'):
+      count = int(self.request.get('count'))
+    else:
+      count = _DEFAULT_DISPLAY_COUNT
+
+    # TODO(katesonia): Add pagination here.
+    fracas_crash_list = query.order(
+        -FracasCrashAnalysis.requested_time).fetch(count)
+    fracas_crashes = []
+
+    for crash in fracas_crash_list:
+      display_data = {
+          'signature': crash.signature,
+          'version': crash.crashed_version,
+          'channel': crash.channel,
+          'platform': crash.platform,
+          'regression_range': ('' if not crash.has_regression_range else
+                               crash.result['regression_range']),
+          'suspected_cls': crash.result.get('suspected_cls', []),
+          'suspected_project': crash.result.get('suspected_project', ''),
+          'suspected_components': crash.result.get(
+              'suspected_components', []),
+          'stack_trace': crash.stack_trace,
+          'historical_metadata': json.dumps(crash.historical_metadata),
+          'key': crash.key.urlsafe()
+      }
+      fracas_crashes.append(display_data)
+
+    data = {
+        'start_date': time_util.FormatDatetime(start_date),
+        'end_date': time_util.FormatDatetime(end_date),
+        'found_suspects': self.request.get('found_suspects', '-1'),
+        'has_regression_range': self.request.get('has_regression_range', '-1'),
+        'suspected_cls_triage_status': self.request.get(
+            'suspected_cls_triage_status', '-1'),
+        'regression_range_triage_status': self.request.get(
+            'regression_range_triage_status', '-1'),
+        'fracas_crashes': fracas_crashes
+    }
+
+    return {
+        'template': 'crash/fracas_dashboard.html',
+        'data': data
+    }