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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 | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef NET_BASE_CHUNKED_UPLOAD_DATA_STREAM_H_ | |
6 #define NET_BASE_CHUNKED_UPLOAD_DATA_STREAM_H_ | |
7 | |
8 #include <vector> | |
9 | |
10 #include "base/macros.h" | |
11 #include "base/memory/ref_counted.h" | |
12 #include "base/memory/scoped_vector.h" | |
13 #include "net/base/completion_callback.h" | |
14 #include "net/base/net_export.h" | |
15 #include "net/base/upload_data_stream.h" | |
16 | |
17 namespace net { | |
18 | |
19 class IOBuffer; | |
20 | |
21 // Class with a push-based interface for uploading data. Buffers all data until | |
22 // the request is completed. Not recommended for uploading large amounts of | |
23 // seekable data, due to this buffering behavior. | |
24 class NET_EXPORT ChunkedUploadDataStream : public UploadDataStream { | |
25 public: | |
26 ChunkedUploadDataStream(int64 identifier); | |
27 | |
28 ~ChunkedUploadDataStream() override; | |
29 | |
30 // Adds data to the stream. |is_done| should be true if this is the last | |
31 // data to be appended. |data_len| must not be 0 unless |is_done| is true. | |
32 // Once called with |is_done| being true, must never be called again. | |
33 // TODO(mmenke): Consider using IOBuffers instead, to reduce data copies. | |
34 void AppendData(const char* data, int data_len, bool is_done); | |
35 | |
36 private: | |
37 // UploadDataStream implementation. | |
38 int InitInternal() override; | |
39 int ReadInternal(IOBuffer* buf, int buf_len) override; | |
40 void ResetInternal() override; | |
41 | |
42 int ReadChunk(IOBuffer* buf, int buf_len); | |
43 | |
44 // Index and offset of next element of |upload_data_| to be read. | |
45 size_t read_index_; | |
46 size_t read_offset_; | |
47 | |
48 // True once all data has been appended to the stream. | |
49 bool all_data_appended_; | |
50 | |
51 ScopedVector<std::vector<char>> upload_data_; | |
52 | |
53 // Buffer to write the next read's data to. Only set when a call to | |
54 // ReadInternal reads no data. | |
55 scoped_refptr<IOBuffer> read_buffer_; | |
56 int read_buffer_len_; | |
57 | |
58 DISALLOW_COPY_AND_ASSIGN(ChunkedUploadDataStream); | |
59 }; | |
60 | |
61 } // namespace net | |
62 | |
63 #endif // NET_BASE_CHUNKED_UPLOAD_DATA_STREAM_H_ | |
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