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1 # Copyright 2014 The Chromium Authors. All rights reserved. | 1 # Copyright 2014 The Chromium Authors. All rights reserved. |
2 # Use of this source code is governed by a BSD-style license that can be | 2 # Use of this source code is governed by a BSD-style license that can be |
3 # found in the LICENSE file. | 3 # found in the LICENSE file. |
4 | 4 |
5 import base64 | 5 import base64 |
6 import gzip | 6 import gzip |
7 import hashlib | 7 import hashlib |
8 import io | 8 import io |
9 import logging | 9 import logging |
10 import zlib | 10 import zlib |
11 | 11 |
12 from metrics import Metric | 12 from metrics import Metric |
13 from telemetry.page import page_measurement | 13 from telemetry.page import page_measurement |
14 # All network metrics are Chrome only for now. | 14 # All network metrics are Chrome only for now. |
15 from telemetry.core.backends.chrome import inspector_network | 15 from telemetry.core.backends.chrome import inspector_network |
16 from telemetry.timeline import recording_options | 16 from telemetry.timeline import recording_options |
17 from telemetry.value import scalar | |
18 | 17 |
19 | 18 |
20 class NetworkMetricException(page_measurement.MeasurementFailure): | 19 class NetworkMetricException(page_measurement.MeasurementFailure): |
21 pass | 20 pass |
22 | 21 |
23 | 22 |
24 class HTTPResponse(object): | 23 class HTTPResponse(object): |
25 """ Represents an HTTP response from a timeline event.""" | 24 """ Represents an HTTP response from a timeline event.""" |
26 def __init__(self, event): | 25 def __init__(self, event): |
27 self._response = ( | 26 self._response = ( |
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161 | 160 |
162 resource = resp.response.url | 161 resource = resp.response.url |
163 resource_signature = resp.url_signature | 162 resource_signature = resp.url_signature |
164 cl = resp.content_length | 163 cl = resp.content_length |
165 if resp.has_original_content_length: | 164 if resp.has_original_content_length: |
166 ocl = resp.original_content_length | 165 ocl = resp.original_content_length |
167 if ocl < cl: | 166 if ocl < cl: |
168 logging.warning('original content length (%d) is less than content ' | 167 logging.warning('original content length (%d) is less than content ' |
169 'lenght(%d) for resource %s', ocl, cl, resource) | 168 'lenght(%d) for resource %s', ocl, cl, resource) |
170 if self.add_result_for_resource: | 169 if self.add_result_for_resource: |
171 results.AddValue(scalar.ScalarValue( | 170 results.Add('resource_data_saving_' + resource_signature, |
172 results.current_page, | 171 'percent', resp.data_saving_rate * 100) |
173 'resource_data_saving_' + resource_signature, 'percent', | 172 results.Add('resource_original_content_length_' + resource_signature, |
174 resp.data_saving_rate * 100)) | 173 'bytes', ocl) |
175 results.AddValue(scalar.ScalarValue( | |
176 results.current_page, | |
177 'resource_original_content_length_' + resource_signature, 'bytes', | |
178 ocl)) | |
179 original_content_length += ocl | 174 original_content_length += ocl |
180 else: | 175 else: |
181 original_content_length += cl | 176 original_content_length += cl |
182 if self.add_result_for_resource: | 177 if self.add_result_for_resource: |
183 results.AddValue(scalar.ScalarValue( | 178 results.Add( |
184 results.current_page, | 179 'resource_content_length_' + resource_signature, 'bytes', cl) |
185 'resource_content_length_' + resource_signature, 'bytes', cl)) | |
186 content_length += cl | 180 content_length += cl |
187 | 181 |
188 results.AddValue(scalar.ScalarValue( | 182 results.Add('content_length', 'bytes', content_length) |
189 results.current_page, 'content_length', 'bytes', content_length)) | 183 results.Add('original_content_length', 'bytes', original_content_length) |
190 results.AddValue(scalar.ScalarValue( | |
191 results.current_page, 'original_content_length', 'bytes', | |
192 original_content_length)) | |
193 if self.compute_data_saving: | 184 if self.compute_data_saving: |
194 if (original_content_length > 0 and | 185 if (original_content_length > 0 and |
195 original_content_length >= content_length): | 186 original_content_length >= content_length): |
196 saving = (float(original_content_length-content_length) * 100 / | 187 saving = (float(original_content_length-content_length) * 100 / |
197 original_content_length) | 188 original_content_length) |
198 results.AddValue(scalar.ScalarValue( | 189 results.Add('data_saving', 'percent', saving) |
199 results.current_page, 'data_saving', 'percent', saving)) | |
200 else: | 190 else: |
201 results.AddValue(scalar.ScalarValue( | 191 results.Add('data_saving', 'percent', 0.0) |
202 results.current_page, 'data_saving', 'percent', 0.0)) | |
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