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| 1 | +// Copyright 2016 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 | + |
| 5 | +/** |
| 6 | + * @constructor |
| 7 | + * @implements {WebInspector.OutputStream} |
| 8 | + * @param {!WebInspector.TimelineModel} model |
| 9 | + * @param {!WebInspector.Progress} progress |
| 10 | + * @param {function()=} canceledCallback |
| 11 | + */ |
| 12 | +WebInspector.TimelineLoader = function(model, progress, canceledCallback) |
| 13 | +{ |
| 14 | + this._model = model; |
| 15 | + |
| 16 | + this._canceledCallback = canceledCallback; |
| 17 | + this._progress = progress; |
| 18 | + this._progress.setTitle(WebInspector.UIString("Loading")); |
| 19 | + this._progress.setTotalWork(WebInspector.TimelineLoader._totalProgress); // Unknown, will loop the values. |
| 20 | + |
| 21 | + this._state = WebInspector.TimelineLoader.State.Initial; |
| 22 | + this._buffer = ""; |
| 23 | + this._firstChunk = true; |
| 24 | + this._wasCanceledOnce = false; |
| 25 | + |
| 26 | + this._loadedBytes = 0; |
| 27 | + this._jsonTokenizer = new WebInspector.TextUtils.BalancedJSONTokenizer(this._writeBalancedJSON.bind(this), true); |
| 28 | +} |
| 29 | + |
| 30 | +/** |
| 31 | + * @param {!WebInspector.TimelineModel} model |
| 32 | + * @param {!File} file |
| 33 | + * @param {!WebInspector.Progress} progress |
| 34 | + */ |
| 35 | +WebInspector.TimelineLoader.loadFromFile = function(model, file, progress) |
| 36 | +{ |
| 37 | + var delegate = new WebInspector.TimelineModelLoadFromFileDelegate(model, progress); |
| 38 | + var fileReader = WebInspector.TimelineLoader._createFileReader(file, delegate); |
| 39 | + var loader = new WebInspector.TimelineLoader(model, new WebInspector.ProgressProxy(null), fileReader.cancel.bind(fileReader)); |
| 40 | + fileReader.start(loader); |
| 41 | +} |
| 42 | + |
| 43 | +/** |
| 44 | + * @param {!WebInspector.TimelineModel} model |
| 45 | + * @param {string} url |
| 46 | + * @param {!WebInspector.Progress} progress |
| 47 | + */ |
| 48 | +WebInspector.TimelineLoader.loadFromURL = function(model, url, progress) |
| 49 | +{ |
| 50 | + var stream = new WebInspector.TimelineLoader(model, progress); |
| 51 | + WebInspector.ResourceLoader.loadAsStream(url, null, stream); |
| 52 | +} |
| 53 | + |
| 54 | +/** |
| 55 | + * @param {!File} file |
| 56 | + * @param {!WebInspector.OutputStreamDelegate} delegate |
| 57 | + * @return {!WebInspector.ChunkedReader} |
| 58 | + */ |
| 59 | +WebInspector.TimelineLoader._createFileReader = function(file, delegate) |
| 60 | +{ |
| 61 | + return new WebInspector.ChunkedFileReader(file, WebInspector.TimelineModel.TransferChunkLengthBytes, delegate); |
| 62 | +} |
| 63 | + |
| 64 | + |
| 65 | +WebInspector.TimelineLoader._totalProgress = 100000; |
| 66 | + |
| 67 | +WebInspector.TimelineLoader.State = { |
| 68 | + Initial: "Initial", |
| 69 | + LookingForEvents: "LookingForEvents", |
| 70 | + ReadingEvents: "ReadingEvents" |
| 71 | +} |
| 72 | + |
| 73 | +WebInspector.TimelineLoader.prototype = { |
| 74 | + /** |
| 75 | + * @override |
| 76 | + * @param {string} chunk |
| 77 | + */ |
| 78 | + write: function(chunk) |
| 79 | + { |
| 80 | + this._loadedBytes += chunk.length; |
| 81 | + if (this._progress.isCanceled() && !this._wasCanceledOnce) { |
| 82 | + this._wasCanceled = true; |
| 83 | + this._reportErrorAndCancelLoading(); |
| 84 | + return; |
| 85 | + } |
| 86 | + this._progress.setWorked(this._loadedBytes % WebInspector.TimelineLoader._totalProgress, |
| 87 | + WebInspector.UIString("Loaded %s", Number.bytesToString(this._loadedBytes))); |
| 88 | + if (this._state === WebInspector.TimelineLoader.State.Initial) { |
| 89 | + if (chunk[0] === "{") |
| 90 | + this._state = WebInspector.TimelineLoader.State.LookingForEvents; |
| 91 | + else if (chunk[0] === "[") |
| 92 | + this._state = WebInspector.TimelineLoader.State.ReadingEvents; |
| 93 | + else { |
| 94 | + this._reportErrorAndCancelLoading(WebInspector.UIString("Malformed timeline data: Unknown JSON format")); |
| 95 | + return; |
| 96 | + } |
| 97 | + } |
| 98 | + |
| 99 | + if (this._state === WebInspector.TimelineLoader.State.LookingForEvents) { |
| 100 | + var objectName = "\"traceEvents\":"; |
| 101 | + var startPos = this._buffer.length - objectName.length; |
| 102 | + this._buffer += chunk; |
| 103 | + var pos = this._buffer.indexOf(objectName, startPos); |
| 104 | + if (pos === -1) |
| 105 | + return; |
| 106 | + chunk = this._buffer.slice(pos + objectName.length) |
| 107 | + this._state = WebInspector.TimelineLoader.State.ReadingEvents; |
| 108 | + } |
| 109 | + |
| 110 | + this._jsonTokenizer.write(chunk); |
| 111 | + }, |
| 112 | + |
| 113 | + /** |
| 114 | + * @param {string} data |
| 115 | + */ |
| 116 | + _writeBalancedJSON: function(data) |
| 117 | + { |
| 118 | + var json = data + "]"; |
| 119 | + |
| 120 | + if (this._firstChunk) { |
| 121 | + this._model.startCollectingTraceEvents(true); |
| 122 | + } else { |
| 123 | + var commaIndex = json.indexOf(","); |
| 124 | + if (commaIndex !== -1) |
| 125 | + json = json.slice(commaIndex + 1); |
| 126 | + json = "[" + json; |
| 127 | + } |
| 128 | + |
| 129 | + var items; |
| 130 | + try { |
| 131 | + items = /** @type {!Array.<!WebInspector.TracingManager.EventPayload>} */ (JSON.parse(json)); |
| 132 | + } catch (e) { |
| 133 | + this._reportErrorAndCancelLoading(WebInspector.UIString("Malformed timeline data: %s", e.toString())); |
| 134 | + return; |
| 135 | + } |
| 136 | + |
| 137 | + if (this._firstChunk) { |
| 138 | + this._firstChunk = false; |
| 139 | + if (this._looksLikeAppVersion(items[0])) { |
| 140 | + this._reportErrorAndCancelLoading(WebInspector.UIString("Legacy Timeline format is not supported.")); |
| 141 | + return; |
| 142 | + } |
| 143 | + } |
| 144 | + |
| 145 | + try { |
| 146 | + this._model.traceEventsCollected(items); |
| 147 | + } catch(e) { |
| 148 | + this._reportErrorAndCancelLoading(WebInspector.UIString("Malformed timeline data: %s", e.toString())); |
| 149 | + return; |
| 150 | + } |
| 151 | + }, |
| 152 | + |
| 153 | + /** |
| 154 | + * @param {string=} message |
| 155 | + */ |
| 156 | + _reportErrorAndCancelLoading: function(message) |
| 157 | + { |
| 158 | + if (message) |
| 159 | + WebInspector.console.error(message); |
| 160 | + this._model.tracingComplete(); |
| 161 | + this._model.reset(); |
| 162 | + if (this._canceledCallback) |
| 163 | + this._canceledCallback(); |
| 164 | + this._progress.done(); |
| 165 | + }, |
| 166 | + |
| 167 | + /** |
| 168 | + * @param {*} item |
| 169 | + * @return {boolean} |
| 170 | + */ |
| 171 | + _looksLikeAppVersion: function(item) |
| 172 | + { |
| 173 | + return typeof item === "string" && item.indexOf("Chrome") !== -1; |
| 174 | + }, |
| 175 | + |
| 176 | + /** |
| 177 | + * @override |
| 178 | + */ |
| 179 | + close: function() |
| 180 | + { |
| 181 | + this._model._loadedFromFile = true; |
| 182 | + this._model.tracingComplete(); |
| 183 | + if (this._progress) |
| 184 | + this._progress.done(); |
| 185 | + } |
| 186 | +} |
| 187 | + |
| 188 | +/** |
| 189 | + * @constructor |
| 190 | + * @implements {WebInspector.OutputStreamDelegate} |
| 191 | + * @param {!WebInspector.TimelineModel} model |
| 192 | + * @param {!WebInspector.Progress} progress |
| 193 | + */ |
| 194 | +WebInspector.TimelineModelLoadFromFileDelegate = function(model, progress) |
| 195 | +{ |
| 196 | + this._model = model; |
| 197 | + this._progress = progress; |
| 198 | +} |
| 199 | + |
| 200 | +WebInspector.TimelineModelLoadFromFileDelegate.prototype = { |
| 201 | + /** |
| 202 | + * @override |
| 203 | + */ |
| 204 | + onTransferStarted: function() |
| 205 | + { |
| 206 | + this._progress.setTitle(WebInspector.UIString("Loading\u2026")); |
| 207 | + }, |
| 208 | + |
| 209 | + /** |
| 210 | + * @override |
| 211 | + * @param {!WebInspector.ChunkedReader} reader |
| 212 | + */ |
| 213 | + onChunkTransferred: function(reader) |
| 214 | + { |
| 215 | + if (this._progress.isCanceled()) { |
| 216 | + reader.cancel(); |
| 217 | + this._progress.done(); |
| 218 | + this._model.reset(); |
| 219 | + return; |
| 220 | + } |
| 221 | + |
| 222 | + var totalSize = reader.fileSize(); |
| 223 | + if (totalSize) { |
| 224 | + this._progress.setTotalWork(totalSize); |
| 225 | + this._progress.setWorked(reader.loadedSize()); |
| 226 | + } |
| 227 | + }, |
| 228 | + |
| 229 | + /** |
| 230 | + * @override |
| 231 | + */ |
| 232 | + onTransferFinished: function() |
| 233 | + { |
| 234 | + this._progress.done(); |
| 235 | + }, |
| 236 | + |
| 237 | + /** |
| 238 | + * @override |
| 239 | + * @param {!WebInspector.ChunkedReader} reader |
| 240 | + * @param {!Event} event |
| 241 | + */ |
| 242 | + onError: function(reader, event) |
| 243 | + { |
| 244 | + this._progress.done(); |
| 245 | + this._model.reset(); |
| 246 | + switch (event.target.error.code) { |
| 247 | + case FileError.NOT_FOUND_ERR: |
| 248 | + WebInspector.console.error(WebInspector.UIString("File \"%s\" not found.", reader.fileName())); |
| 249 | + break; |
| 250 | + case FileError.NOT_READABLE_ERR: |
| 251 | + WebInspector.console.error(WebInspector.UIString("File \"%s\" is not readable", reader.fileName())); |
| 252 | + break; |
| 253 | + case FileError.ABORT_ERR: |
| 254 | + break; |
| 255 | + default: |
| 256 | + WebInspector.console.error(WebInspector.UIString("An error occurred while reading the file \"%s\"", reader.fileName())); |
| 257 | + } |
| 258 | + } |
| 259 | +} |
| 260 | + |
| 261 | +/** |
| 262 | + * @constructor |
| 263 | + * @param {!WebInspector.OutputStream} stream |
| 264 | + * @implements {WebInspector.OutputStreamDelegate} |
| 265 | + */ |
| 266 | +WebInspector.TracingTimelineSaver = function(stream) |
| 267 | +{ |
| 268 | + this._stream = stream; |
| 269 | +} |
| 270 | + |
| 271 | +WebInspector.TracingTimelineSaver.prototype = { |
| 272 | + /** |
| 273 | + * @override |
| 274 | + */ |
| 275 | + onTransferStarted: function() |
| 276 | + { |
| 277 | + this._stream.write("["); |
| 278 | + }, |
| 279 | + |
| 280 | + /** |
| 281 | + * @override |
| 282 | + */ |
| 283 | + onTransferFinished: function() |
| 284 | + { |
| 285 | + this._stream.write("]"); |
| 286 | + }, |
| 287 | + |
| 288 | + /** |
| 289 | + * @override |
| 290 | + * @param {!WebInspector.ChunkedReader} reader |
| 291 | + */ |
| 292 | + onChunkTransferred: function(reader) { }, |
| 293 | + |
| 294 | + /** |
| 295 | + * @override |
| 296 | + * @param {!WebInspector.ChunkedReader} reader |
| 297 | + * @param {!Event} event |
| 298 | + */ |
| 299 | + onError: function(reader, event) { } |
| 300 | +} |
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