| OLD | NEW |
|---|
| (Empty) |
| 1 # Copyright (c) 2012 The Chromium Authors. All rights reserved. | |
| 2 # Use of this source code is governed by a BSD-style license that can be | |
| 3 # found in the LICENSE file. | |
| 4 from telemetry.timeline_event import TimelineEvent | |
| 5 from telemetry.timeline_model import TimelineModel | |
| 6 | |
| 7 class TabBackendException(Exception): | |
| 8 pass | |
| 9 | |
| 10 class InspectorTimeline(object): | |
| 11 """Implementation of dev tools timeline.""" | |
| 12 class Recorder(object): | |
| 13 """Utility class to Start / Stop recording timeline.""" | |
| 14 def __init__(self, tab): | |
| 15 self._tab = tab | |
| 16 | |
| 17 def __enter__(self): | |
| 18 self._tab.StartTimelineRecording() | |
| 19 | |
| 20 def __exit__(self, *args): | |
| 21 self._tab.StopTimelineRecording() | |
| 22 | |
| 23 def __init__(self, inspector_backend): | |
| 24 self._inspector_backend = inspector_backend | |
| 25 self._is_recording = False | |
| 26 self._timeline_model = None | |
| 27 | |
| 28 @property | |
| 29 def timeline_model(self): | |
| 30 return self._timeline_model | |
| 31 | |
| 32 def Start(self): | |
| 33 if self._is_recording: | |
| 34 return | |
| 35 self._is_recording = True | |
| 36 self._timeline_model = TimelineModel() | |
| 37 self._inspector_backend.RegisterDomain('Timeline', | |
| 38 self._OnNotification, self._OnClose) | |
| 39 req = {'method': 'Timeline.start'} | |
| 40 self._SendSyncRequest(req) | |
| 41 | |
| 42 def Stop(self): | |
| 43 if not self._is_recording: | |
| 44 raise TabBackendException('Stop() called but not started') | |
| 45 self._is_recording = False | |
| 46 self._timeline_model.DidFinishRecording() | |
| 47 req = {'method': 'Timeline.stop'} | |
| 48 self._SendSyncRequest(req) | |
| 49 self._inspector_backend.UnregisterDomain('Timeline') | |
| 50 | |
| 51 def _SendSyncRequest(self, req, timeout=60): | |
| 52 res = self._inspector_backend.SyncRequest(req, timeout) | |
| 53 if 'error' in res: | |
| 54 raise TabBackendException(res['error']['message']) | |
| 55 return res['result'] | |
| 56 | |
| 57 def _OnNotification(self, msg): | |
| 58 if not self._is_recording: | |
| 59 return | |
| 60 if 'method' in msg and msg['method'] == 'Timeline.eventRecorded': | |
| 61 self._OnEventRecorded(msg) | |
| 62 | |
| 63 def _OnEventRecorded(self, msg): | |
| 64 record = msg.get('params', {}).get('record') | |
| 65 if record: | |
| 66 newly_created_event = InspectorTimeline.RawEventToTimelineEvent(record) | |
| 67 if newly_created_event: | |
| 68 self._timeline_model.AddEvent(newly_created_event) | |
| 69 | |
| 70 @staticmethod | |
| 71 def RawEventToTimelineEvent(raw_inspector_event): | |
| 72 """Converts raw_inspector_event to TimelineEvent.""" | |
| 73 return InspectorTimeline._RawEventToTimelineEventRecursive( | |
| 74 None, raw_inspector_event) | |
| 75 | |
| 76 @staticmethod | |
| 77 def _RawEventToTimelineEventRecursive( | |
| 78 parent_for_created_events, raw_inspector_event): | |
| 79 """ | |
| 80 Creates a new TimelineEvent for the raw_inspector_event, if possible, adding | |
| 81 it to the provided parent_for_created_events. | |
| 82 | |
| 83 It then recurses on any child events found inside, building a tree of | |
| 84 TimelineEvents. | |
| 85 | |
| 86 Returns the root of the created tree, or None. | |
| 87 """ | |
| 88 # Create a TimelineEvent for this raw_inspector_event if possible. Only | |
| 89 # events with start-time and end-time get imported. | |
| 90 if ('startTime' in raw_inspector_event and | |
| 91 'endTime' in raw_inspector_event): | |
| 92 args = {} | |
| 93 for x in raw_inspector_event: | |
| 94 if x in ('startTime', 'endTime', 'children'): | |
| 95 continue | |
| 96 args[x] = raw_inspector_event[x] | |
| 97 if len(args) == 0: | |
| 98 args = None | |
| 99 newly_created_event = TimelineEvent( | |
| 100 name=raw_inspector_event['type'], | |
| 101 start_time_ms=raw_inspector_event['startTime'], | |
| 102 duration_ms=(raw_inspector_event['endTime'] - | |
| 103 raw_inspector_event['startTime']), | |
| 104 args=args) | |
| 105 if parent_for_created_events: | |
| 106 parent_for_created_events.children.append(newly_created_event) | |
| 107 else: | |
| 108 newly_created_event = None | |
| 109 | |
| 110 # Process any children events, creating TimelineEvents for them as well. | |
| 111 if newly_created_event: | |
| 112 parent_for_children = newly_created_event | |
| 113 else: | |
| 114 parent_for_children = parent_for_created_events | |
| 115 for child in raw_inspector_event.get('children', []): | |
| 116 InspectorTimeline._RawEventToTimelineEventRecursive( | |
| 117 parent_for_children, child) | |
| 118 return newly_created_event | |
| 119 | |
| 120 def _OnClose(self): | |
| 121 pass | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 12278015:
[Telemetry] Reorganize everything. (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src