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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 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 #ifndef CHROME_BROWSER_CHROMEOS_DRIVE_DRIVE_FILE_STREAM_READER_H_ | 5 #ifndef CHROME_BROWSER_CHROMEOS_DRIVE_DRIVE_FILE_STREAM_READER_H_ |
6 #define CHROME_BROWSER_CHROMEOS_DRIVE_DRIVE_FILE_STREAM_READER_H_ | 6 #define CHROME_BROWSER_CHROMEOS_DRIVE_DRIVE_FILE_STREAM_READER_H_ |
7 | 7 |
| 8 #include <stdint.h> |
| 9 |
8 #include <string> | 10 #include <string> |
9 | 11 |
10 #include "base/basictypes.h" | |
11 #include "base/callback.h" | 12 #include "base/callback.h" |
| 13 #include "base/macros.h" |
12 #include "base/memory/ref_counted.h" | 14 #include "base/memory/ref_counted.h" |
13 #include "base/memory/scoped_ptr.h" | 15 #include "base/memory/scoped_ptr.h" |
14 #include "base/memory/scoped_vector.h" | 16 #include "base/memory/scoped_vector.h" |
15 #include "base/threading/thread_checker.h" | 17 #include "base/threading/thread_checker.h" |
16 #include "components/drive/file_errors.h" | 18 #include "components/drive/file_errors.h" |
17 #include "google_apis/drive/drive_api_error_codes.h" | 19 #include "google_apis/drive/drive_api_error_codes.h" |
18 #include "net/base/completion_callback.h" | 20 #include "net/base/completion_callback.h" |
19 | 21 |
20 namespace base { | 22 namespace base { |
21 class SequencedTaskRunner; | 23 class SequencedTaskRunner; |
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51 virtual void OnCompleted(FileError error) = 0; | 53 virtual void OnCompleted(FileError error) = 0; |
52 }; | 54 }; |
53 | 55 |
54 // The read operation implementation for the locally cached files. | 56 // The read operation implementation for the locally cached files. |
55 class LocalReaderProxy : public ReaderProxy { | 57 class LocalReaderProxy : public ReaderProxy { |
56 public: | 58 public: |
57 // The |file_reader| should be the instance which is already opened. | 59 // The |file_reader| should be the instance which is already opened. |
58 // This class takes its ownership. | 60 // This class takes its ownership. |
59 // |length| is the number of bytes to be read. It must be equal or | 61 // |length| is the number of bytes to be read. It must be equal or |
60 // smaller than the remaining data size in the |file_reader|. | 62 // smaller than the remaining data size in the |file_reader|. |
61 LocalReaderProxy( | 63 LocalReaderProxy(scoped_ptr<util::LocalFileReader> file_reader, |
62 scoped_ptr<util::LocalFileReader> file_reader, int64 length); | 64 int64_t length); |
63 ~LocalReaderProxy() override; | 65 ~LocalReaderProxy() override; |
64 | 66 |
65 // ReaderProxy overrides. | 67 // ReaderProxy overrides. |
66 int Read(net::IOBuffer* buffer, | 68 int Read(net::IOBuffer* buffer, |
67 int buffer_length, | 69 int buffer_length, |
68 const net::CompletionCallback& callback) override; | 70 const net::CompletionCallback& callback) override; |
69 void OnGetContent(scoped_ptr<std::string> data) override; | 71 void OnGetContent(scoped_ptr<std::string> data) override; |
70 void OnCompleted(FileError error) override; | 72 void OnCompleted(FileError error) override; |
71 | 73 |
72 private: | 74 private: |
73 scoped_ptr<util::LocalFileReader> file_reader_; | 75 scoped_ptr<util::LocalFileReader> file_reader_; |
74 | 76 |
75 // Callback for the LocalFileReader::Read. | 77 // Callback for the LocalFileReader::Read. |
76 void OnReadCompleted( | 78 void OnReadCompleted( |
77 const net::CompletionCallback& callback, int read_result); | 79 const net::CompletionCallback& callback, int read_result); |
78 | 80 |
79 // The number of remaining bytes to be read. | 81 // The number of remaining bytes to be read. |
80 int64 remaining_length_; | 82 int64_t remaining_length_; |
81 | 83 |
82 base::ThreadChecker thread_checker_; | 84 base::ThreadChecker thread_checker_; |
83 | 85 |
84 // This should remain the last member so it'll be destroyed first and | 86 // This should remain the last member so it'll be destroyed first and |
85 // invalidate its weak pointers before other members are destroyed. | 87 // invalidate its weak pointers before other members are destroyed. |
86 base::WeakPtrFactory<LocalReaderProxy> weak_ptr_factory_; | 88 base::WeakPtrFactory<LocalReaderProxy> weak_ptr_factory_; |
87 DISALLOW_COPY_AND_ASSIGN(LocalReaderProxy); | 89 DISALLOW_COPY_AND_ASSIGN(LocalReaderProxy); |
88 }; | 90 }; |
89 | 91 |
90 // The read operation implementation for the file which is being downloaded. | 92 // The read operation implementation for the file which is being downloaded. |
91 class NetworkReaderProxy : public ReaderProxy { | 93 class NetworkReaderProxy : public ReaderProxy { |
92 public: | 94 public: |
93 // If the instance is deleted during the download process, it is necessary | 95 // If the instance is deleted during the download process, it is necessary |
94 // to cancel the job. |job_canceller| should be the callback to run the | 96 // to cancel the job. |job_canceller| should be the callback to run the |
95 // cancelling. |full_content_length| is necessary for determining whether the | 97 // cancelling. |full_content_length| is necessary for determining whether the |
96 // deletion is done in the middle of download process. | 98 // deletion is done in the middle of download process. |
97 NetworkReaderProxy( | 99 NetworkReaderProxy(int64_t offset, |
98 int64 offset, int64 content_length, int64 full_content_length, | 100 int64_t content_length, |
99 const base::Closure& job_canceller); | 101 int64_t full_content_length, |
| 102 const base::Closure& job_canceller); |
100 ~NetworkReaderProxy() override; | 103 ~NetworkReaderProxy() override; |
101 | 104 |
102 // ReaderProxy overrides. | 105 // ReaderProxy overrides. |
103 int Read(net::IOBuffer* buffer, | 106 int Read(net::IOBuffer* buffer, |
104 int buffer_length, | 107 int buffer_length, |
105 const net::CompletionCallback& callback) override; | 108 const net::CompletionCallback& callback) override; |
106 void OnGetContent(scoped_ptr<std::string> data) override; | 109 void OnGetContent(scoped_ptr<std::string> data) override; |
107 void OnCompleted(FileError error) override; | 110 void OnCompleted(FileError error) override; |
108 | 111 |
109 private: | 112 private: |
110 // The data received from the server, but not yet read. | 113 // The data received from the server, but not yet read. |
111 ScopedVector<std::string> pending_data_; | 114 ScopedVector<std::string> pending_data_; |
112 | 115 |
113 // The number of bytes to be skipped. | 116 // The number of bytes to be skipped. |
114 int64 remaining_offset_; | 117 int64_t remaining_offset_; |
115 | 118 |
116 // The number of bytes of remaining data (including the data not yet | 119 // The number of bytes of remaining data (including the data not yet |
117 // received from the server). | 120 // received from the server). |
118 int64 remaining_content_length_; | 121 int64_t remaining_content_length_; |
119 | 122 |
120 // Flag to remember whether this read request is for reading till the end of | 123 // Flag to remember whether this read request is for reading till the end of |
121 // the file. | 124 // the file. |
122 const bool is_full_download_; | 125 const bool is_full_download_; |
123 | 126 |
124 int error_code_; | 127 int error_code_; |
125 | 128 |
126 // To support pending Read(), it is necessary to keep its arguments. | 129 // To support pending Read(), it is necessary to keep its arguments. |
127 scoped_refptr<net::IOBuffer> buffer_; | 130 scoped_refptr<net::IOBuffer> buffer_; |
128 int buffer_length_; | 131 int buffer_length_; |
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192 // is done. | 195 // is done. |
193 void InitializeAfterGetFileContentInitialized( | 196 void InitializeAfterGetFileContentInitialized( |
194 const net::HttpByteRange& byte_range, | 197 const net::HttpByteRange& byte_range, |
195 const InitializeCompletionCallback& callback, | 198 const InitializeCompletionCallback& callback, |
196 FileError error, | 199 FileError error, |
197 const base::FilePath& local_cache_file_path, | 200 const base::FilePath& local_cache_file_path, |
198 scoped_ptr<ResourceEntry> entry); | 201 scoped_ptr<ResourceEntry> entry); |
199 | 202 |
200 // Part of Initialize. Called when the local file open process is done. | 203 // Part of Initialize. Called when the local file open process is done. |
201 void InitializeAfterLocalFileOpen( | 204 void InitializeAfterLocalFileOpen( |
202 int64 length, | 205 int64_t length, |
203 const InitializeCompletionCallback& callback, | 206 const InitializeCompletionCallback& callback, |
204 scoped_ptr<ResourceEntry> entry, | 207 scoped_ptr<ResourceEntry> entry, |
205 scoped_ptr<util::LocalFileReader> file_reader, | 208 scoped_ptr<util::LocalFileReader> file_reader, |
206 int open_result); | 209 int open_result); |
207 | 210 |
208 // Called when the data is received from the server. | 211 // Called when the data is received from the server. |
209 void OnGetContent(google_apis::DriveApiErrorCode error_code, | 212 void OnGetContent(google_apis::DriveApiErrorCode error_code, |
210 scoped_ptr<std::string> data); | 213 scoped_ptr<std::string> data); |
211 | 214 |
212 // Called when GetFileContent is completed. | 215 // Called when GetFileContent is completed. |
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223 | 226 |
224 // This should remain the last member so it'll be destroyed first and | 227 // This should remain the last member so it'll be destroyed first and |
225 // invalidate its weak pointers before other members are destroyed. | 228 // invalidate its weak pointers before other members are destroyed. |
226 base::WeakPtrFactory<DriveFileStreamReader> weak_ptr_factory_; | 229 base::WeakPtrFactory<DriveFileStreamReader> weak_ptr_factory_; |
227 DISALLOW_COPY_AND_ASSIGN(DriveFileStreamReader); | 230 DISALLOW_COPY_AND_ASSIGN(DriveFileStreamReader); |
228 }; | 231 }; |
229 | 232 |
230 } // namespace drive | 233 } // namespace drive |
231 | 234 |
232 #endif // CHROME_BROWSER_CHROMEOS_DRIVE_DRIVE_FILE_STREAM_READER_H_ | 235 #endif // CHROME_BROWSER_CHROMEOS_DRIVE_DRIVE_FILE_STREAM_READER_H_ |
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