[Findit] Add fracas analysis result feedback page.

appengine/findit/handlers/crash/fracas_result_feedback.py

+# Copyright 2014 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.
+
+import base64
+from collections import defaultdict
+import copy
+from datetime import datetime
+import json
+import os
+
+from google.appengine.ext import ndb
+from google.appengine.api import users
+
+from common import constants
+from common import time_util
+from common.base_handler import BaseHandler
+from common.base_handler import Permission
+from handlers import handlers_util
+from handlers import result_status
+from handlers.result_status import NO_TRY_JOB_REASON_MAP
+from model.crash.fracas_crash_analysis import FracasCrashAnalysis
+from model import triage_status
+
+
+class FracasResultFeedback(BaseHandler):
+  PERMISSION_LEVEL = Permission.ANYONE
+
+  def _GetCrashDataFromAnalysis(self, analysis):

[Martin Barbella, 2016/06/17 22:14:32]

Could this be useful anywhere else? Would it make more sense to move something
like this into the entity class?

[Sharu Jiang, 2016/06/17 23:58:22]

Done.

+    return {
+        'signature': analysis.signature,
+        'version': analysis.crashed_version,
+        'channel': analysis.channel,
+        'platform': analysis.platform,
+        'regression_range': (
+            analysis.result['regression_range'] if 'regression_range' in
+            analysis.result else None),
+        'historical_metadata': analysis.historical_metadata,
+        'stack_trace': analysis.stack_trace,
+        'suspected_cls': (
+            analysis.result['suspected_cls'] if 'suspected_cls' in
+            analysis.result else None),
+        'suspected_project': (
+            analysis.result['suspected_project'] if 'suspected_project' in
+            analysis.result else None),
+        'suspected_components': (
+            analysis.result['suspected_components'] if 'suspected_components'
+            in analysis.result else None),
+        'request_time': time_util.FormatDatetime(analysis.requested_time),
+        'analysis_completed': analysis.completed,
+        'analysis_failed': analysis.failed,
+    }
+
+  def HandleGet(self):
+    """Triggers analysis of a build failure on demand and return current result.
+
+    If the final analysis result is available, set cache-control to 1 day to
+    avoid overload by unnecessary and frequent query from clients; otherwise
+    set cache-control to 5 seconds to allow repeated query.
+
+    Serve HTML page or JSON result as requested.
+    """
+    key = ndb.Key(urlsafe=self.request.get('key'))
+
+    analysis = key.get()
+    if not analysis:  # pragma: no cover.
+      return BaseHandler.CreateError(
+          'cannot find analysis for crash %s' % analysis.signature)
+
+    return {
+        'template': 'crash/fracas_result_feedback.html',
+        'data': self._GetCrashDataFromAnalysis(analysis),
+    }
+
+  def HandlePost(self):  # pragma: no cover
+    return self.HandleGet()