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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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