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1 // Copyright (c) 2012 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_UPLOAD_FILE_ELEMENT_READER_H_ | |
6 #define NET_BASE_UPLOAD_FILE_ELEMENT_READER_H_ | |
7 | |
8 #include "base/compiler_specific.h" | |
9 #include "base/files/file.h" | |
10 #include "base/files/file_path.h" | |
11 #include "base/gtest_prod_util.h" | |
12 #include "base/memory/ref_counted.h" | |
13 #include "base/memory/scoped_ptr.h" | |
14 #include "base/memory/weak_ptr.h" | |
15 #include "base/time/time.h" | |
16 #include "net/base/upload_element_reader.h" | |
17 | |
18 namespace base { | |
19 class TaskRunner; | |
20 } | |
21 | |
22 namespace net { | |
23 | |
24 class FileStream; | |
25 | |
26 // An UploadElementReader implementation for file. | |
27 class NET_EXPORT UploadFileElementReader : public UploadElementReader { | |
28 public: | |
29 // |task_runner| is used to perform file operations. It must not be NULL. | |
30 UploadFileElementReader(base::TaskRunner* task_runner, | |
31 const base::FilePath& path, | |
32 uint64 range_offset, | |
33 uint64 range_length, | |
34 const base::Time& expected_modification_time); | |
35 ~UploadFileElementReader() override; | |
36 | |
37 const base::FilePath& path() const { return path_; } | |
38 uint64 range_offset() const { return range_offset_; } | |
39 uint64 range_length() const { return range_length_; } | |
40 const base::Time& expected_modification_time() const { | |
41 return expected_modification_time_; | |
42 } | |
43 | |
44 // UploadElementReader overrides: | |
45 const UploadFileElementReader* AsFileReader() const override; | |
46 int Init(const CompletionCallback& callback) override; | |
47 uint64 GetContentLength() const override; | |
48 uint64 BytesRemaining() const override; | |
49 int Read(IOBuffer* buf, | |
50 int buf_length, | |
51 const CompletionCallback& callback) override; | |
52 | |
53 private: | |
54 FRIEND_TEST_ALL_PREFIXES(ElementsUploadDataStreamTest, FileSmallerThanLength); | |
55 FRIEND_TEST_ALL_PREFIXES(HttpNetworkTransactionTest, | |
56 UploadFileSmallerThanLength); | |
57 | |
58 // Resets this instance to the uninitialized state. | |
59 void Reset(); | |
60 | |
61 // These methods are used to implement Init(). | |
62 void OnOpenCompleted(const CompletionCallback& callback, int result); | |
63 void OnSeekCompleted(const CompletionCallback& callback, int64 result); | |
64 void OnGetFileInfoCompleted(const CompletionCallback& callback, | |
65 base::File::Info* file_info, | |
66 bool result); | |
67 | |
68 // This method is used to implement Read(). | |
69 int OnReadCompleted(const CompletionCallback& callback, int result); | |
70 | |
71 // Sets an value to override the result for GetContentLength(). | |
72 // Used for tests. | |
73 struct NET_EXPORT_PRIVATE ScopedOverridingContentLengthForTests { | |
74 ScopedOverridingContentLengthForTests(uint64 value); | |
75 ~ScopedOverridingContentLengthForTests(); | |
76 }; | |
77 | |
78 scoped_refptr<base::TaskRunner> task_runner_; | |
79 const base::FilePath path_; | |
80 const uint64 range_offset_; | |
81 const uint64 range_length_; | |
82 const base::Time expected_modification_time_; | |
83 scoped_ptr<FileStream> file_stream_; | |
84 uint64 content_length_; | |
85 uint64 bytes_remaining_; | |
86 base::WeakPtrFactory<UploadFileElementReader> weak_ptr_factory_; | |
87 | |
88 DISALLOW_COPY_AND_ASSIGN(UploadFileElementReader); | |
89 }; | |
90 | |
91 } // namespace net | |
92 | |
93 #endif // NET_BASE_UPLOAD_FILE_ELEMENT_READER_H_ | |
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