1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
|
/* SPDX-License-Identifier: GPL-2.0-or-later */
/*!********************************************************************
Audacity: A Digital Audio Editor
RemoteProjectSnapshot.h
Dmitry Vedenko
**********************************************************************/
#pragma once
#include <atomic>
#include <chrono>
#include <condition_variable>
#include <future>
#include <functional>
#include <memory>
#include <mutex>
#include <string>
#include <thread>
#include <unordered_set>
#include "CloudSyncDTO.h"
#include "NetworkUtils.h"
namespace audacity::network_manager
{
class IResponse;
using ResponsePtr = std::shared_ptr<IResponse>;
} // namespace audacity::network_manager
namespace audacity::cloud::audiocom::sync
{
struct RemoteProjectSnapshotState final
{
ResponseResult Result;
int64_t BlocksDownloaded { 0 };
int64_t BlocksTotal { 0 };
bool ProjectDownloaded { false };
bool IsComplete() const noexcept;
};
using RemoteProjectSnapshotStateCallback =
std::function<void(RemoteProjectSnapshotState)>;
class RemoteProjectSnapshot final
: public std::enable_shared_from_this<RemoteProjectSnapshot>
{
struct Tag
{
};
public:
RemoteProjectSnapshot(
Tag, ProjectInfo projectInfo, SnapshotInfo snapshotInfo, std::string path,
RemoteProjectSnapshotStateCallback callback, bool downloadDetached);
~RemoteProjectSnapshot();
RemoteProjectSnapshot(const RemoteProjectSnapshot&) = delete;
RemoteProjectSnapshot& operator=(const RemoteProjectSnapshot&) = delete;
RemoteProjectSnapshot(RemoteProjectSnapshot&&) = delete;
RemoteProjectSnapshot& operator=(RemoteProjectSnapshot&&) = delete;
static std::shared_ptr<RemoteProjectSnapshot> Sync(
ProjectInfo projectInfo, SnapshotInfo snapshotInfo, std::string path,
RemoteProjectSnapshotStateCallback callback, bool downloadDetached);
void Cancel();
TransferStats GetTransferStats() const;
std::string_view GetProjectId() const;
private:
enum class State
{
Downloading,
Cancelled,
Failed,
Succeeded
};
using SuccessHandler =
std::function<void(audacity::network_manager::ResponsePtr)>;
std::string AttachOriginalDB();
void SetupBlocksCopy(
const std::string& dbName, std::unordered_set<std::string> blocks);
std::unordered_set<std::string>
CalculateKnownBlocks(const std::string& attachedDbName) const;
void DoCancel();
void
DownloadBlob(std::string url, SuccessHandler onSuccess, int retries);
void
OnProjectBlobDownloaded(audacity::network_manager::ResponsePtr response);
void OnBlockDownloaded(
std::string blockHash, audacity::network_manager::ResponsePtr response);
void OnFailure(ResponseResult result);
void RemoveResponse(audacity::network_manager::IResponse* response);
void MarkProjectInDB(bool successfulDownload);
void ReportProgress();
void StartSync();
bool InProgress() const;
void RequestsThread();
void SetState(State state);
void CleanupOrphanBlocks();
const std::string mSnapshotDBName;
const ProjectInfo mProjectInfo;
const SnapshotInfo mSnapshotInfo;
const std::string mPath;
RemoteProjectSnapshotStateCallback mCallback;
std::vector<std::string> mAttachedDBNames;
std::atomic<State> mState { State::Downloading };
using Clock = std::chrono::steady_clock;
using TimePoint = Clock::time_point;
TimePoint mStartTime { Clock::now() };
TimePoint mEndTime;
std::thread mRequestsThread;
std::mutex mRequestsMutex;
std::condition_variable mRequestsCV;
std::vector<std::pair<std::string, SuccessHandler>> mRequests;
int mRequestsInProgress { 0 };
size_t mNextRequestIndex { 0 };
std::mutex mResponsesMutex;
std::vector<std::shared_ptr<audacity::network_manager::IResponse>>
mResponses;
std::atomic<int64_t> mDownloadedBlocks { 0 };
std::atomic<int64_t> mCopiedBlocks { 0 };
std::atomic<int64_t> mDownloadedBytes { 0 };
int64_t mMissingBlocks { 0 };
std::optional<std::future<bool>> mCopyBlocksFuture;
std::atomic<bool> mProjectDownloaded { false };
bool mNothingToDo { false };
const bool mDownloadDetached { false };
}; // class RemoteProjectSnapshot
} // namespace audacity::cloud::audiocom::sync
|
