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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 #include "config.h" | 5 #include "config.h" |
6 #include "modules/fetch/Body.h" | 6 #include "modules/fetch/Body.h" |
7 | 7 |
8 #include "bindings/core/v8/ExceptionState.h" | 8 #include "bindings/core/v8/ExceptionState.h" |
9 #include "bindings/core/v8/ScriptPromiseResolver.h" | 9 #include "bindings/core/v8/ScriptPromiseResolver.h" |
10 #include "bindings/core/v8/ScriptState.h" | 10 #include "bindings/core/v8/ScriptState.h" |
11 #include "bindings/core/v8/V8ArrayBuffer.h" | 11 #include "bindings/core/v8/V8ArrayBuffer.h" |
12 #include "bindings/core/v8/V8ThrowException.h" | 12 #include "bindings/core/v8/V8ThrowException.h" |
13 #include "core/dom/DOMArrayBuffer.h" | 13 #include "core/dom/DOMArrayBuffer.h" |
14 #include "core/dom/DOMTypedArray.h" | 14 #include "core/dom/DOMTypedArray.h" |
15 #include "core/dom/ExceptionCode.h" | |
15 #include "core/fileapi/Blob.h" | 16 #include "core/fileapi/Blob.h" |
16 #include "core/fileapi/FileReaderLoader.h" | |
17 #include "core/fileapi/FileReaderLoaderClient.h" | |
18 #include "core/frame/UseCounter.h" | 17 #include "core/frame/UseCounter.h" |
19 #include "core/streams/ReadableByteStream.h" | 18 #include "core/streams/ReadableByteStream.h" |
20 #include "core/streams/ReadableByteStreamReader.h" | 19 #include "core/streams/ReadableByteStreamReader.h" |
21 #include "core/streams/UnderlyingSource.h" | 20 #include "core/streams/UnderlyingSource.h" |
22 #include "modules/fetch/BodyStreamBuffer.h" | 21 #include "modules/fetch/BodyStreamBuffer.h" |
22 #include "modules/fetch/DataConsumerHandleUtil.h" | |
23 #include "modules/fetch/FetchBlobDataConsumerHandle.h" | |
23 | 24 |
24 namespace blink { | 25 namespace blink { |
25 | 26 |
26 class Body::BlobHandleReceiver final : public BodyStreamBuffer::BlobHandleCreato rClient { | |
27 public: | |
28 explicit BlobHandleReceiver(Body* body) | |
29 : m_body(body) | |
30 { | |
31 } | |
32 void didCreateBlobHandle(PassRefPtr<BlobDataHandle> handle) override | |
33 { | |
34 ASSERT(m_body); | |
35 m_body->readAsyncFromBlob(handle); | |
36 m_body = nullptr; | |
37 } | |
38 void didFail(DOMException* exception) override | |
39 { | |
40 ASSERT(m_body); | |
41 m_body->didBlobHandleReceiveError(exception); | |
42 m_body = nullptr; | |
43 } | |
44 DEFINE_INLINE_VIRTUAL_TRACE() | |
45 { | |
46 BodyStreamBuffer::BlobHandleCreatorClient::trace(visitor); | |
47 visitor->trace(m_body); | |
48 } | |
49 private: | |
50 Member<Body> m_body; | |
51 }; | |
52 | |
53 // This class is an ActiveDOMObject subclass only for holding the | 27 // This class is an ActiveDOMObject subclass only for holding the |
yhirano
2015/07/03 04:42:28
We do no longer need ExecutionContext, right?
hiroshige
2015/07/05 07:30:24
Done.
| |
54 // ExecutionContext used in |pullSource|. | 28 // ExecutionContext used in |pullSource|. |
55 class Body::ReadableStreamSource : public BodyStreamBuffer::Observer, public Und erlyingSource, public FileReaderLoaderClient, public ActiveDOMObject { | 29 class Body::ReadableStreamSource : public GarbageCollectedFinalized<Body::Readab leStreamSource>, public UnderlyingSource, public WebDataConsumerHandle::Client, public BodyStreamBuffer::DrainingStreamNotificationClient, public ActiveDOMObjec t { |
56 USING_GARBAGE_COLLECTED_MIXIN(ReadableStreamSource); | 30 USING_GARBAGE_COLLECTED_MIXIN(ReadableStreamSource); |
57 public: | 31 public: |
58 enum State { | 32 enum State { |
yhirano
2015/07/03 04:42:28
Now we can remove this enum and rely on the stream
hiroshige
2015/07/05 07:30:24
Done.
| |
59 Initial, | |
60 Streaming, | 33 Streaming, |
61 Closed, | 34 Closed, |
62 Errored, | 35 Errored, |
63 }; | 36 }; |
64 ReadableStreamSource(ExecutionContext* executionContext, PassRefPtr<BlobData Handle> handle) | |
65 : ActiveDOMObject(executionContext) | |
66 , m_blobDataHandle(handle ? handle : BlobDataHandle::create(BlobData::cr eate(), 0)) | |
67 , m_state(Initial) | |
68 { | |
69 suspendIfNeeded(); | |
70 } | |
71 | 37 |
72 ReadableStreamSource(ExecutionContext* executionContext, BodyStreamBuffer* b uffer) | 38 ReadableStreamSource(ExecutionContext* executionContext, BodyStreamBuffer* b uffer) |
73 : ActiveDOMObject(executionContext) | 39 : ActiveDOMObject(executionContext) |
74 , m_bodyStreamBuffer(buffer) | 40 , m_bodyStreamBuffer(buffer) |
75 , m_state(Initial) | 41 , m_state(Streaming) |
42 , m_streamNeedsMore(false) | |
43 #if ENABLE(ASSERT) | |
44 , m_drained(false) | |
45 #endif | |
76 { | 46 { |
77 suspendIfNeeded(); | 47 suspendIfNeeded(); |
78 } | 48 if (m_bodyStreamBuffer) |
79 | 49 obtainReader(); |
80 explicit ReadableStreamSource(ExecutionContext* executionContext) | |
81 : ActiveDOMObject(executionContext) | |
82 , m_blobDataHandle(BlobDataHandle::create(BlobData::create(), 0)) | |
83 , m_state(Initial) | |
84 { | |
85 suspendIfNeeded(); | |
86 } | 50 } |
87 | 51 |
88 ~ReadableStreamSource() override { } | 52 ~ReadableStreamSource() override { } |
89 | 53 |
90 State state() const { return m_state; } | 54 State state() const { return m_state; } |
91 | 55 |
92 void startStream(ReadableByteStream* stream) | 56 void startStream(ReadableByteStream* stream) |
93 { | 57 { |
94 m_stream = stream; | 58 m_stream = stream; |
95 stream->didSourceStart(); | 59 stream->didSourceStart(); |
96 } | 60 } |
97 // Creates a new BodyStreamBuffer to drain the data. | 61 // Creates a new BodyStreamBuffer to drain the data. |
98 BodyStreamBuffer* createDrainingStream() | 62 PassOwnPtr<DrainingBodyStreamBuffer> createDrainingStream() |
99 { | 63 { |
100 ASSERT(m_state != Initial); | 64 if (!m_bodyStreamBuffer) |
65 return nullptr; | |
101 | 66 |
102 auto drainingStreamBuffer = new BodyStreamBuffer(new Canceller(this)); | 67 ASSERT(!m_drained); |
103 if (m_stream->stateInternal() == ReadableByteStream::Closed) { | 68 #if ENABLE(ASSERT) |
104 drainingStreamBuffer->close(); | 69 m_drained = true; |
105 return drainingStreamBuffer; | 70 #endif |
106 } | |
107 if (m_stream->stateInternal() == ReadableByteStream::Errored) { | |
108 drainingStreamBuffer->error(exception()); | |
109 return drainingStreamBuffer; | |
110 } | |
111 | 71 |
112 ASSERT(!m_drainingStreamBuffer); | 72 if (m_stream->stateInternal() == ReadableByteStream::Closed) |
113 // Take back the data in |m_stream|. | 73 m_bodyStreamBuffer = BodyStreamBuffer::createEmpty(); |
114 Deque<std::pair<RefPtr<DOMArrayBufferView>, size_t>> tmp_queue; | 74 if (m_stream->stateInternal() == ReadableByteStream::Errored) |
115 ASSERT(m_stream->stateInternal() == ReadableStream::Readable); | 75 m_bodyStreamBuffer = BodyStreamBuffer::create(createFetchDataConsume rHandleFromWebHandle(createUnexpectedErrorDataConsumerHandle())); |
116 m_stream->readInternal(tmp_queue); | |
117 while (!tmp_queue.isEmpty()) { | |
118 std::pair<RefPtr<DOMArrayBufferView>, size_t> data = tmp_queue.takeF irst(); | |
119 drainingStreamBuffer->write(data.first->buffer()); | |
120 } | |
121 if (m_state == Closed) | |
122 drainingStreamBuffer->close(); | |
123 | 76 |
124 m_drainingStreamBuffer = drainingStreamBuffer; | 77 m_reader.clear(); |
125 return m_drainingStreamBuffer; | 78 return DrainingBodyStreamBuffer::create(m_bodyStreamBuffer, this); |
126 } | 79 } |
80 | |
127 DEFINE_INLINE_VIRTUAL_TRACE() | 81 DEFINE_INLINE_VIRTUAL_TRACE() |
128 { | 82 { |
129 visitor->trace(m_bodyStreamBuffer); | 83 visitor->trace(m_bodyStreamBuffer); |
130 visitor->trace(m_drainingStreamBuffer); | |
131 visitor->trace(m_stream); | 84 visitor->trace(m_stream); |
132 BodyStreamBuffer::Observer::trace(visitor); | |
133 UnderlyingSource::trace(visitor); | 85 UnderlyingSource::trace(visitor); |
86 DrainingStreamNotificationClient::trace(visitor); | |
134 ActiveDOMObject::trace(visitor); | 87 ActiveDOMObject::trace(visitor); |
135 } | 88 } |
136 | 89 |
137 void close() | 90 void close() |
138 { | 91 { |
139 if (m_state == Closed) { | 92 if (m_state == Closed) { |
140 // It is possible to call |close| from the source side (such | 93 // It is possible to call |close| from the source side (such |
141 // as blob loading finish) and from the consumer side (such as | 94 // as blob loading finish) and from the consumer side (such as |
142 // calling |cancel|). Thus we should ignore it here. | 95 // calling |cancel|). Thus we should ignore it here. |
143 return; | 96 return; |
144 } | 97 } |
145 m_state = Closed; | 98 m_state = Closed; |
146 if (m_drainingStreamBuffer) | 99 m_reader.clear(); |
147 m_drainingStreamBuffer->close(); | |
148 m_stream->close(); | 100 m_stream->close(); |
149 } | 101 } |
150 void error() | 102 void error() |
151 { | 103 { |
152 m_state = Errored; | 104 m_state = Errored; |
153 if (m_drainingStreamBuffer) | 105 m_reader.clear(); |
154 m_drainingStreamBuffer->error(exception()); | 106 m_stream->error(DOMException::create(NetworkError, "network error")); |
155 m_stream->error(exception()); | 107 } |
108 | |
109 void obtainReader() | |
110 { | |
111 m_reader = m_bodyStreamBuffer->handle()->obtainReader(this); | |
156 } | 112 } |
157 | 113 |
158 private: | 114 private: |
159 class Canceller : public BodyStreamBuffer::Canceller { | 115 void didFetchDataLoadFinishedFromDrainingStream() |
160 public: | 116 { |
161 Canceller(ReadableStreamSource* source) : m_source(source) { } | 117 ASSERT(m_bodyStreamBuffer); |
yhirano
2015/07/03 04:42:28
ASSERT(m_drained)?
hiroshige
2015/07/05 07:30:24
Done.
| |
162 void cancel() override | 118 |
163 { | 119 #if ENABLE(ASSERT) |
164 m_source->cancel(); | 120 m_drained = false; |
121 #endif | |
122 obtainReader(); | |
123 // We have to call didGetReadable() now to call close()/error() if | |
124 // necessary. | |
125 // didGetReadable() would be called asynchronously, but it is too late. | |
126 didGetReadable(); | |
127 } | |
128 | |
129 void didGetReadable() override | |
130 { | |
131 if (!m_streamNeedsMore) { | |
132 // Perform zero-length read to call close()/error() early. | |
133 size_t readSize; | |
134 WebDataConsumerHandle::Result result = m_reader->read(nullptr, 0, We bDataConsumerHandle::FlagNone, &readSize); | |
135 switch (result) { | |
136 case WebDataConsumerHandle::Ok: | |
137 case WebDataConsumerHandle::ShouldWait: | |
138 return; | |
139 case WebDataConsumerHandle::Done: | |
140 close(); | |
141 return; | |
142 case WebDataConsumerHandle::Busy: | |
143 case WebDataConsumerHandle::ResourceExhausted: | |
144 case WebDataConsumerHandle::UnexpectedError: | |
145 error(); | |
146 return; | |
147 } | |
165 } | 148 } |
166 | 149 |
167 DEFINE_INLINE_VIRTUAL_TRACE() | 150 processData(); |
168 { | 151 } |
169 visitor->trace(m_source); | |
170 BodyStreamBuffer::Canceller::trace(visitor); | |
171 } | |
172 | |
173 private: | |
174 Member<ReadableStreamSource> m_source; | |
175 }; | |
176 | 152 |
177 // UnderlyingSource functions. | 153 // UnderlyingSource functions. |
178 void pullSource() override | 154 void pullSource() override |
179 { | 155 { |
180 // Note that one |pull| is called only when |read| is called on the | 156 ASSERT(!m_streamNeedsMore); |
181 // associated ReadableByteStreamReader because we create a stream with | 157 m_streamNeedsMore = true; |
182 // StrictStrategy. | 158 |
183 if (m_state == Initial) { | 159 ASSERT(!m_drained); |
184 m_state = Streaming; | 160 |
185 if (m_bodyStreamBuffer) { | 161 processData(); |
186 m_bodyStreamBuffer->registerObserver(this); | 162 } |
187 onWrite(); | 163 |
188 if (m_bodyStreamBuffer->hasError()) | 164 ScriptPromise cancelSource(ScriptState* scriptState, ScriptValue reason) ove rride |
189 return onError(); | 165 { |
190 if (m_bodyStreamBuffer->isClosed()) | 166 close(); |
191 return onClose(); | 167 return ScriptPromise::cast(scriptState, v8::Undefined(scriptState->isola te())); |
192 } else { | 168 } |
193 FileReaderLoader::ReadType readType = FileReaderLoader::ReadAsAr rayBuffer; | 169 |
194 m_loader = adoptPtr(new FileReaderLoader(readType, this)); | 170 // Reads data and writes the data to |m_stream|, as long as data are |
195 m_loader->start(executionContext(), m_blobDataHandle); | 171 // available and the stream has pending reads. |
172 void processData() | |
173 { | |
174 ASSERT(m_reader); | |
175 while (m_streamNeedsMore) { | |
176 const void* buffer; | |
177 size_t available; | |
178 WebDataConsumerHandle::Result result = m_reader->beginRead(&buffer, WebDataConsumerHandle::FlagNone, &available); | |
179 switch (result) { | |
180 case WebDataConsumerHandle::Ok: | |
181 m_streamNeedsMore = m_stream->enqueue(DOMUint8Array::create(stat ic_cast<const unsigned char*>(buffer), available)); | |
182 m_reader->endRead(available); | |
183 break; | |
184 | |
185 case WebDataConsumerHandle::Done: | |
186 close(); | |
187 return; | |
188 | |
189 case WebDataConsumerHandle::ShouldWait: | |
190 return; | |
191 | |
192 case WebDataConsumerHandle::Busy: | |
193 case WebDataConsumerHandle::ResourceExhausted: | |
194 case WebDataConsumerHandle::UnexpectedError: | |
195 error(); | |
196 return; | |
196 } | 197 } |
197 } | 198 } |
198 } | 199 } |
199 | 200 |
200 ScriptPromise cancelSource(ScriptState* scriptState, ScriptValue reason) ove rride | 201 // Source of data. |
201 { | 202 Member<BodyStreamBuffer> m_bodyStreamBuffer; |
202 cancel(); | 203 OwnPtr<FetchDataConsumerHandle::Reader> m_reader; |
203 return ScriptPromise::cast(scriptState, v8::Undefined(scriptState->isola te())); | |
204 } | |
205 | 204 |
206 // BodyStreamBuffer::Observer functions. | |
207 void onWrite() override | |
208 { | |
209 ASSERT(m_state == Streaming); | |
210 while (RefPtr<DOMArrayBuffer> buf = m_bodyStreamBuffer->read()) { | |
211 write(buf); | |
212 } | |
213 } | |
214 void onClose() override | |
215 { | |
216 ASSERT(m_state == Streaming); | |
217 close(); | |
218 m_bodyStreamBuffer->unregisterObserver(); | |
219 } | |
220 void onError() override | |
221 { | |
222 ASSERT(m_state == Streaming); | |
223 error(); | |
224 m_bodyStreamBuffer->unregisterObserver(); | |
225 } | |
226 | |
227 // FileReaderLoaderClient functions. | |
228 void didStartLoading() override { } | |
229 void didReceiveData() override { } | |
230 void didFinishLoading() override | |
231 { | |
232 ASSERT(m_state == Streaming); | |
233 write(m_loader->arrayBufferResult()); | |
234 close(); | |
235 } | |
236 void didFail(FileError::ErrorCode) override | |
237 { | |
238 ASSERT(m_state == Streaming); | |
239 error(); | |
240 } | |
241 | |
242 void write(PassRefPtr<DOMArrayBuffer> buf) | |
243 { | |
244 if (m_drainingStreamBuffer) { | |
245 m_drainingStreamBuffer->write(buf); | |
246 } else { | |
247 auto size = buf->byteLength(); | |
248 m_stream->enqueue(DOMUint8Array::create(buf, 0, size)); | |
249 } | |
250 } | |
251 void cancel() | |
252 { | |
253 if (m_bodyStreamBuffer) { | |
254 m_bodyStreamBuffer->cancel(); | |
255 // We should not close the stream here, because it is canceller's | |
256 // responsibility. | |
257 } else { | |
258 if (m_loader) | |
259 m_loader->cancel(); | |
260 close(); | |
261 } | |
262 } | |
263 | |
264 DOMException* exception() | |
265 { | |
266 if (m_state != Errored) | |
267 return nullptr; | |
268 if (m_bodyStreamBuffer) { | |
269 ASSERT(m_bodyStreamBuffer->exception()); | |
270 return m_bodyStreamBuffer->exception(); | |
271 } | |
272 return DOMException::create(NetworkError, "network error"); | |
273 } | |
274 | |
275 // Set when the data container of the Body is a BodyStreamBuffer. | |
276 Member<BodyStreamBuffer> m_bodyStreamBuffer; | |
277 // Set when the data container of the Body is a BlobDataHandle. | |
278 RefPtr<BlobDataHandle> m_blobDataHandle; | |
279 // Used to read the data from BlobDataHandle. | |
280 OwnPtr<FileReaderLoader> m_loader; | |
281 // Created when createDrainingStream is called to drain the data. | |
282 Member<BodyStreamBuffer> m_drainingStreamBuffer; | |
283 Member<ReadableByteStream> m_stream; | 205 Member<ReadableByteStream> m_stream; |
284 State m_state; | 206 State m_state; |
207 bool m_streamNeedsMore; | |
208 #if ENABLE(ASSERT) | |
209 bool m_drained; | |
210 #endif | |
285 }; | 211 }; |
286 | 212 |
287 ScriptPromise Body::readAsync(ScriptState* scriptState, ResponseType type) | 213 ScriptPromise Body::readAsync(ScriptState* scriptState, ResponseType type) |
288 { | 214 { |
289 if (bodyUsed()) | 215 if (bodyUsed()) |
290 return ScriptPromise::reject(scriptState, V8ThrowException::createTypeEr ror(scriptState->isolate(), "Already read")); | 216 return ScriptPromise::reject(scriptState, V8ThrowException::createTypeEr ror(scriptState->isolate(), "Already read")); |
291 | 217 |
292 // When the main thread sends a V8::TerminateExecution() signal to a worker | 218 // When the main thread sends a V8::TerminateExecution() signal to a worker |
293 // thread, any V8 API on the worker thread starts returning an empty | 219 // thread, any V8 API on the worker thread starts returning an empty |
294 // handle. This can happen in Body::readAsync. To avoid the situation, we | 220 // handle. This can happen in Body::readAsync. To avoid the situation, we |
295 // first check the ExecutionContext and return immediately if it's already | 221 // first check the ExecutionContext and return immediately if it's already |
296 // gone (which means that the V8::TerminateExecution() signal has been sent | 222 // gone (which means that the V8::TerminateExecution() signal has been sent |
297 // to this worker thread). | 223 // to this worker thread). |
298 ExecutionContext* executionContext = scriptState->executionContext(); | 224 ExecutionContext* executionContext = scriptState->executionContext(); |
299 if (!executionContext) | 225 if (!executionContext) |
300 return ScriptPromise(); | 226 return ScriptPromise(); |
301 | 227 |
302 lockBody(); | 228 lockBody(); |
303 m_responseType = type; | 229 m_responseType = type; |
304 | 230 |
305 ASSERT(!m_resolver); | 231 ASSERT(!m_resolver); |
306 m_resolver = ScriptPromiseResolver::create(scriptState); | 232 m_resolver = ScriptPromiseResolver::create(scriptState); |
307 ScriptPromise promise = m_resolver->promise(); | 233 ScriptPromise promise = m_resolver->promise(); |
308 | 234 |
309 if (m_stream->stateInternal() == ReadableStream::Closed) { | 235 if (m_stream->stateInternal() == ReadableStream::Closed) { |
310 // We resolve the resolver manually in order not to use member | 236 resolveWithEmptyDataSynchronously(); |
311 // variables. | |
312 switch (m_responseType) { | |
313 case ResponseAsArrayBuffer: | |
314 m_resolver->resolve(DOMArrayBuffer::create(nullptr, 0)); | |
315 break; | |
316 case ResponseAsBlob: { | |
317 OwnPtr<BlobData> blobData = BlobData::create(); | |
318 blobData->setContentType(mimeType()); | |
319 m_resolver->resolve(Blob::create(BlobDataHandle::create(blobData.rel ease(), 0))); | |
320 break; | |
321 } | |
322 case ResponseAsText: | |
323 m_resolver->resolve(String()); | |
324 break; | |
325 case ResponseAsFormData: | |
326 // TODO(yhirano): Implement this. | |
327 ASSERT_NOT_REACHED(); | |
328 break; | |
329 case ResponseAsJSON: { | |
330 ScriptState::Scope scope(m_resolver->scriptState()); | |
331 m_resolver->reject(V8ThrowException::createSyntaxError(m_resolver->s criptState()->isolate(), "Unexpected end of input")); | |
332 break; | |
333 } | |
334 case ResponseUnknown: | |
335 ASSERT_NOT_REACHED(); | |
336 break; | |
337 } | |
338 m_resolver.clear(); | |
339 } else if (m_stream->stateInternal() == ReadableStream::Errored) { | 237 } else if (m_stream->stateInternal() == ReadableStream::Errored) { |
340 m_resolver->reject(m_stream->storedException()); | 238 m_resolver->reject(m_stream->storedException()); |
341 m_resolver.clear(); | 239 m_resolver.clear(); |
342 } else if (isBodyConsumed()) { | |
343 m_streamSource->createDrainingStream()->readAllAndCreateBlobHandle(mimeT ype(), new BlobHandleReceiver(this)); | |
344 } else if (buffer()) { | |
345 buffer()->readAllAndCreateBlobHandle(mimeType(), new BlobHandleReceiver( this)); | |
346 } else { | 240 } else { |
347 readAsyncFromBlob(blobDataHandle()); | 241 readAsyncFromDrainingBodyStreamBuffer(createDrainingStream(), mimeType() ); |
348 } | 242 } |
349 return promise; | 243 return promise; |
350 } | 244 } |
351 | 245 |
352 void Body::readAsyncFromBlob(PassRefPtr<BlobDataHandle> handle) | 246 void Body::resolveWithEmptyDataSynchronously() |
353 { | 247 { |
354 FileReaderLoader::ReadType readType = FileReaderLoader::ReadAsText; | 248 // We resolve the resolver manually in order not to use member |
355 RefPtr<BlobDataHandle> blobHandle = handle; | 249 // variables. |
356 if (!blobHandle) | |
357 blobHandle = BlobDataHandle::create(BlobData::create(), 0); | |
358 switch (m_responseType) { | 250 switch (m_responseType) { |
359 case ResponseAsArrayBuffer: | 251 case ResponseAsArrayBuffer: |
360 readType = FileReaderLoader::ReadAsArrayBuffer; | 252 m_resolver->resolve(DOMArrayBuffer::create(nullptr, 0)); |
361 break; | 253 break; |
254 case ResponseAsBlob: { | |
255 OwnPtr<BlobData> blobData = BlobData::create(); | |
256 blobData->setContentType(mimeType()); | |
257 m_resolver->resolve(Blob::create(BlobDataHandle::create(blobData.release (), 0))); | |
258 break; | |
259 } | |
260 case ResponseAsText: | |
261 m_resolver->resolve(String()); | |
262 break; | |
263 case ResponseAsFormData: | |
264 // TODO(yhirano): Implement this. | |
265 ASSERT_NOT_REACHED(); | |
266 break; | |
267 case ResponseAsJSON: { | |
268 ScriptState::Scope scope(m_resolver->scriptState()); | |
269 m_resolver->reject(V8ThrowException::createSyntaxError(m_resolver->scrip tState()->isolate(), "Unexpected end of input")); | |
270 break; | |
271 } | |
272 case ResponseUnknown: | |
273 ASSERT_NOT_REACHED(); | |
274 break; | |
275 } | |
276 m_resolver.clear(); | |
277 } | |
278 | |
279 void Body::readAsyncFromDrainingBodyStreamBuffer(PassOwnPtr<DrainingBodyStreamBu ffer> buffer, const String& mimeType) | |
280 { | |
281 if (!buffer) { | |
282 resolveWithEmptyDataSynchronously(); | |
283 m_streamSource->close(); | |
284 return; | |
285 } | |
286 | |
287 FetchDataLoader* fetchDataLoader = nullptr; | |
288 | |
289 switch (m_responseType) { | |
290 case ResponseAsArrayBuffer: | |
291 fetchDataLoader = FetchDataLoader::createLoaderAsArrayBuffer(); | |
292 break; | |
293 | |
294 case ResponseAsJSON: | |
295 case ResponseAsText: | |
296 fetchDataLoader = FetchDataLoader::createLoaderAsString(); | |
297 break; | |
298 | |
362 case ResponseAsBlob: | 299 case ResponseAsBlob: |
363 if (blobHandle->size() != kuint64max) { | 300 fetchDataLoader = FetchDataLoader::createLoaderAsBlobHandle(mimeType); |
364 // If the size of |blobHandle| is set correctly, creates Blob from | |
365 // it. | |
366 if (blobHandle->type() != mimeType()) { | |
367 // A new BlobDataHandle is created to override the Blob's type. | |
368 m_resolver->resolve(Blob::create(BlobDataHandle::create(blobHand le->uuid(), mimeType(), blobHandle->size()))); | |
369 } else { | |
370 m_resolver->resolve(Blob::create(blobHandle)); | |
371 } | |
372 m_stream->close(); | |
373 m_resolver.clear(); | |
374 return; | |
375 } | |
376 // If the size is not set, read as ArrayBuffer and create a new blob to | |
377 // get the size. | |
378 // FIXME: This workaround is not good for performance. | |
379 // When we will stop using Blob as a base system of Body to support | |
380 // stream, this problem should be solved. | |
381 readType = FileReaderLoader::ReadAsArrayBuffer; | |
382 break; | 301 break; |
302 | |
383 case ResponseAsFormData: | 303 case ResponseAsFormData: |
384 // FIXME: Implement this. | 304 // FIXME: Implement this. |
385 ASSERT_NOT_REACHED(); | 305 ASSERT_NOT_REACHED(); |
386 break; | 306 return; |
387 case ResponseAsJSON: | 307 |
388 case ResponseAsText: | |
389 break; | |
390 default: | 308 default: |
391 ASSERT_NOT_REACHED(); | 309 ASSERT_NOT_REACHED(); |
310 return; | |
392 } | 311 } |
393 | 312 |
394 m_loader = adoptPtr(new FileReaderLoader(readType, this)); | 313 buffer->startLoading(fetchDataLoader, this); |
395 m_loader->start(m_resolver->scriptState()->executionContext(), blobHandle); | |
396 | |
397 return; | |
398 } | 314 } |
399 | 315 |
400 ScriptPromise Body::arrayBuffer(ScriptState* scriptState) | 316 ScriptPromise Body::arrayBuffer(ScriptState* scriptState) |
401 { | 317 { |
402 return readAsync(scriptState, ResponseAsArrayBuffer); | 318 return readAsync(scriptState, ResponseAsArrayBuffer); |
403 } | 319 } |
404 | 320 |
405 ScriptPromise Body::blob(ScriptState* scriptState) | 321 ScriptPromise Body::blob(ScriptState* scriptState) |
406 { | 322 { |
407 return readAsync(scriptState, ResponseAsBlob); | 323 return readAsync(scriptState, ResponseAsBlob); |
(...skipping 29 matching lines...) Expand all Loading... | |
437 { | 353 { |
438 ASSERT(!bodyUsed()); | 354 ASSERT(!bodyUsed()); |
439 if (option == PassBody) | 355 if (option == PassBody) |
440 m_bodyUsed = true; | 356 m_bodyUsed = true; |
441 ASSERT(!m_stream->isLocked()); | 357 ASSERT(!m_stream->isLocked()); |
442 TrackExceptionState exceptionState; | 358 TrackExceptionState exceptionState; |
443 m_stream->getBytesReader(executionContext(), exceptionState); | 359 m_stream->getBytesReader(executionContext(), exceptionState); |
444 ASSERT(!exceptionState.hadException()); | 360 ASSERT(!exceptionState.hadException()); |
445 } | 361 } |
446 | 362 |
447 bool Body::isBodyConsumed() const | 363 void Body::setBody(BodyStreamBuffer* buffer) |
448 { | 364 { |
449 if (m_streamSource->state() != m_streamSource->Initial) { | 365 m_streamSource = new ReadableStreamSource(executionContext(), buffer); |
450 // Some data is pulled from the source. | |
451 return true; | |
452 } | |
453 if (m_stream->stateInternal() == ReadableStream::Closed) { | |
454 // Return true if the blob handle is originally not empty. | |
455 RefPtr<BlobDataHandle> handle = blobDataHandle(); | |
456 return handle && handle->size(); | |
457 } | |
458 if (m_stream->stateInternal() == ReadableStream::Errored) { | |
459 // The stream is errored. That means an effort to read data was made. | |
460 return true; | |
461 } | |
462 return false; | |
463 } | |
464 | |
465 void Body::setBody(ReadableStreamSource* source) | |
466 { | |
467 m_streamSource = source; | |
468 m_stream = new ReadableByteStream(m_streamSource, new ReadableByteStream::St rictStrategy); | 366 m_stream = new ReadableByteStream(m_streamSource, new ReadableByteStream::St rictStrategy); |
469 m_streamSource->startStream(m_stream); | 367 m_streamSource->startStream(m_stream); |
470 } | 368 } |
471 | 369 |
472 BodyStreamBuffer* Body::createDrainingStream() | 370 PassOwnPtr<DrainingBodyStreamBuffer> Body::createDrainingStream() |
473 { | 371 { |
474 return m_streamSource->createDrainingStream(); | 372 return m_streamSource->createDrainingStream(); |
475 } | 373 } |
476 | 374 |
477 void Body::stop() | 375 void Body::stop() |
yhirano
2015/07/03 04:42:28
If you do nothing you can delete this function.
hiroshige
2015/07/05 07:30:24
Done.
| |
478 { | 376 { |
479 // Canceling the load will call didFail which will remove the resolver. | |
480 if (m_loader) | |
481 m_loader->cancel(); | |
482 } | 377 } |
483 | 378 |
484 bool Body::hasPendingActivity() const | 379 bool Body::hasPendingActivity() const |
485 { | 380 { |
486 if (executionContext()->activeDOMObjectsAreStopped()) | 381 if (executionContext()->activeDOMObjectsAreStopped()) |
487 return false; | 382 return false; |
488 if (m_resolver) | 383 if (m_resolver) |
489 return true; | 384 return true; |
490 if (m_stream->isLocked()) | 385 if (m_stream->isLocked()) |
491 return true; | 386 return true; |
492 return false; | 387 return false; |
493 } | 388 } |
494 | 389 |
495 Body::ReadableStreamSource* Body::createBodySource(PassRefPtr<BlobDataHandle> ha ndle) | |
496 { | |
497 return new ReadableStreamSource(executionContext(), handle); | |
498 } | |
499 | |
500 Body::ReadableStreamSource* Body::createBodySource(BodyStreamBuffer* buffer) | |
501 { | |
502 return new ReadableStreamSource(executionContext(), buffer); | |
503 } | |
504 | |
505 DEFINE_TRACE(Body) | 390 DEFINE_TRACE(Body) |
506 { | 391 { |
507 visitor->trace(m_resolver); | 392 visitor->trace(m_resolver); |
508 visitor->trace(m_stream); | 393 visitor->trace(m_stream); |
509 visitor->trace(m_streamSource); | 394 visitor->trace(m_streamSource); |
510 ActiveDOMObject::trace(visitor); | 395 ActiveDOMObject::trace(visitor); |
396 FetchDataLoader::Client::trace(visitor); | |
511 } | 397 } |
512 | 398 |
513 Body::Body(ExecutionContext* context) | 399 Body::Body(ExecutionContext* context) |
514 : ActiveDOMObject(context) | 400 : ActiveDOMObject(context) |
515 , m_bodyUsed(false) | 401 , m_bodyUsed(false) |
516 , m_responseType(ResponseType::ResponseUnknown) | 402 , m_responseType(ResponseType::ResponseUnknown) |
517 , m_streamSource(new ReadableStreamSource(context)) | 403 , m_streamSource(new ReadableStreamSource(context, nullptr)) |
518 , m_stream(new ReadableByteStream(m_streamSource, new ReadableByteStream::St rictStrategy)) | 404 , m_stream(new ReadableByteStream(m_streamSource, new ReadableByteStream::St rictStrategy)) |
519 { | 405 { |
520 m_streamSource->startStream(m_stream); | 406 m_streamSource->startStream(m_stream); |
521 } | 407 } |
522 | 408 |
523 void Body::resolveJSON(const String& string) | 409 void Body::resolveJSON(const String& string) |
524 { | 410 { |
525 ASSERT(m_responseType == ResponseAsJSON); | 411 ASSERT(m_responseType == ResponseAsJSON); |
526 ScriptState::Scope scope(m_resolver->scriptState()); | 412 ScriptState::Scope scope(m_resolver->scriptState()); |
527 v8::Isolate* isolate = m_resolver->scriptState()->isolate(); | 413 v8::Isolate* isolate = m_resolver->scriptState()->isolate(); |
528 v8::Local<v8::String> inputString = v8String(isolate, string); | 414 v8::Local<v8::String> inputString = v8String(isolate, string); |
529 v8::TryCatch trycatch; | 415 v8::TryCatch trycatch; |
530 v8::Local<v8::Value> parsed; | 416 v8::Local<v8::Value> parsed; |
531 if (v8Call(v8::JSON::Parse(isolate, inputString), parsed, trycatch)) | 417 if (v8Call(v8::JSON::Parse(isolate, inputString), parsed, trycatch)) |
532 m_resolver->resolve(parsed); | 418 m_resolver->resolve(parsed); |
533 else | 419 else |
534 m_resolver->reject(trycatch.Exception()); | 420 m_resolver->reject(trycatch.Exception()); |
535 } | 421 } |
536 | 422 |
537 // FileReaderLoaderClient functions. | 423 // FetchDataLoader::Client functions. |
538 void Body::didStartLoading() { } | 424 void Body::didFetchDataLoadFailed() |
539 void Body::didReceiveData() { } | 425 { |
540 void Body::didFinishLoading() | 426 if (!executionContext() || executionContext()->activeDOMObjectsAreStopped()) |
427 return; | |
428 | |
429 if (m_resolver) { | |
430 if (!m_resolver->executionContext() || m_resolver->executionContext()->a ctiveDOMObjectsAreStopped()) { | |
431 m_resolver.clear(); | |
432 return; | |
433 } | |
434 ScriptState* state = m_resolver->scriptState(); | |
435 ScriptState::Scope scope(state); | |
436 m_resolver->reject(V8ThrowException::createTypeError(state->isolate(), " Failed to fetch")); | |
437 m_resolver.clear(); | |
438 } | |
439 } | |
440 | |
441 void Body::didFetchDataLoadedBlobHandle(PassRefPtr<BlobDataHandle> blobDataHandl e) | |
442 { | |
443 if (!executionContext() || executionContext()->activeDOMObjectsAreStopped()) | |
444 return; | |
445 | |
446 ASSERT(m_responseType == ResponseAsBlob); | |
447 m_resolver->resolve(Blob::create(blobDataHandle)); | |
448 m_resolver.clear(); | |
449 } | |
450 | |
451 void Body::didFetchDataLoadedArrayBuffer(PassRefPtr<DOMArrayBuffer> arrayBuffer) | |
452 { | |
453 if (!executionContext() || executionContext()->activeDOMObjectsAreStopped()) | |
454 return; | |
455 | |
456 ASSERT(m_responseType == ResponseAsArrayBuffer); | |
457 m_resolver->resolve(arrayBuffer); | |
458 m_resolver.clear(); | |
459 } | |
460 | |
461 void Body::didFetchDataLoadedString(const String& str) | |
541 { | 462 { |
542 if (!executionContext() || executionContext()->activeDOMObjectsAreStopped()) | 463 if (!executionContext() || executionContext()->activeDOMObjectsAreStopped()) |
543 return; | 464 return; |
544 | 465 |
545 switch (m_responseType) { | 466 switch (m_responseType) { |
546 case ResponseAsArrayBuffer: | |
547 m_resolver->resolve(m_loader->arrayBufferResult()); | |
548 break; | |
549 case ResponseAsBlob: { | |
550 ASSERT(blobDataHandle()->size() == kuint64max); | |
551 OwnPtr<BlobData> blobData = BlobData::create(); | |
552 RefPtr<DOMArrayBuffer> buffer = m_loader->arrayBufferResult(); | |
553 blobData->appendBytes(buffer->data(), buffer->byteLength()); | |
554 blobData->setContentType(mimeType()); | |
555 const size_t length = blobData->length(); | |
556 m_resolver->resolve(Blob::create(BlobDataHandle::create(blobData.release (), length))); | |
557 break; | |
558 } | |
559 case ResponseAsFormData: | |
560 ASSERT_NOT_REACHED(); | |
561 break; | |
562 case ResponseAsJSON: | 467 case ResponseAsJSON: |
563 resolveJSON(m_loader->stringResult()); | 468 resolveJSON(str); |
564 break; | 469 break; |
565 case ResponseAsText: | 470 case ResponseAsText: |
566 m_resolver->resolve(m_loader->stringResult()); | 471 m_resolver->resolve(str); |
567 break; | 472 break; |
568 default: | 473 default: |
569 ASSERT_NOT_REACHED(); | 474 ASSERT_NOT_REACHED(); |
570 } | 475 } |
571 m_streamSource->close(); | 476 |
572 m_resolver.clear(); | 477 m_resolver.clear(); |
573 } | 478 } |
574 | 479 |
575 void Body::didFail(FileError::ErrorCode code) | |
576 { | |
577 if (!executionContext() || executionContext()->activeDOMObjectsAreStopped()) | |
578 return; | |
579 | |
580 m_streamSource->error(); | |
581 if (m_resolver) { | |
582 // FIXME: We should reject the promise. | |
583 m_resolver->resolve(""); | |
584 m_resolver.clear(); | |
585 } | |
586 } | |
587 | |
588 void Body::didBlobHandleReceiveError(DOMException* exception) | |
589 { | |
590 if (!m_resolver) | |
591 return; | |
592 m_streamSource->error(); | |
593 m_resolver->reject(exception); | |
594 m_resolver.clear(); | |
595 } | |
596 | |
597 } // namespace blink | 480 } // namespace blink |
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