1 /*
2  * Copyright 2009-2017 Alibaba Cloud All rights reserved.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #include <string>
18 #include <algorithm>
19 #ifdef _WIN32
20 #include <codecvt>
21 #endif
22 #include <alibabacloud/oss/Const.h>
23 #include "ResumableBaseWorker.h"
24 #include "../utils/FileSystemUtils.h"
25 #include "utils/Utils.h"
26 
27 using namespace AlibabaCloud::OSS;
28 
29 
ResumableBaseWorker(uint64_t objectSize,uint64_t partSize)30 ResumableBaseWorker::ResumableBaseWorker(uint64_t objectSize, uint64_t partSize) :
31     hasRecord_(false),
32     objectSize_(objectSize),
33     consumedSize_(0),
34     partSize_(partSize)
35 {
36 }
37 
validate(OssError & err)38 int ResumableBaseWorker::validate(OssError& err)
39 {
40     genRecordPath();
41 
42     if (hasRecordPath()) {
43         if (0 != loadRecord()) {
44             removeRecordFile();
45         }
46     }
47 
48     if (hasRecord_) {
49         if (0 != validateRecord()) {
50             removeRecordFile();
51             if (0 != prepare(err)) {
52                 return -1;
53             }
54         }
55     }
56     else {
57         if (0 != prepare(err)) {
58             return -1;
59         }
60     }
61     return 0;
62 }
63 
determinePartSize()64 void ResumableBaseWorker::determinePartSize()
65 {
66     uint64_t partSize = partSize_;
67     uint64_t objectSize = objectSize_;
68     uint64_t partCount = (objectSize - 1) / partSize + 1;
69     while (partCount > PartNumberUpperLimit) {
70         partSize = partSize * 2;
71         partCount = (objectSize - 1) / partSize + 1;
72     }
73 
74     partSize_ = partSize;
75 }
76 
hasRecordPath()77 bool ResumableBaseWorker::hasRecordPath()
78 {
79     return !(recordPath_.empty() && recordPathW_.empty());
80 }
81 
removeRecordFile()82 void ResumableBaseWorker::removeRecordFile()
83 {
84     if (!recordPath_.empty()) {
85         RemoveFile(recordPath_);
86     }
87 #ifdef _WIN32
88     if (!recordPathW_.empty()) {
89         RemoveFile(recordPathW_);
90     }
91 #endif
92 }
93 
94 #ifdef _WIN32
95 
toString(const std::wstring & str)96 std::string ResumableBaseWorker::toString(const std::wstring& str)
97 {
98     std::wstring_convert<std::codecvt_utf8<wchar_t>> conv;
99     return conv.to_bytes(str);
100 }
101 
toWString(const std::string & str)102 std::wstring ResumableBaseWorker::toWString(const std::string& str)
103 {
104     std::wstring_convert<std::codecvt_utf8<wchar_t>> conv;
105     return conv.from_bytes(str);
106 }
107 
108 #else
109 
toString(const std::wstring & str)110 std::string ResumableBaseWorker::toString(const std::wstring& str)
111 {
112     UNUSED_PARAM(str);
113     return "";
114 }
115 
toWString(const std::string & str)116 std::wstring ResumableBaseWorker::toWString(const std::string& str)
117 {
118     UNUSED_PARAM(str);
119     return L"";
120 }
121 
122 #endif
123 
124