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siadrive/SiaDrive.Api/UploadManager.cpp
2017-02-22 19:50:16 -06:00

225 lines
7.0 KiB
C++

#include "stdafx.h"
#include "UploadManager.h"
#include "SiaDriveConfig.h"
#include "SiaApi.h"
using namespace Sia::Api;
#define TABLE_CREATE L"create table if not exists %s (%s);"
#define UPLOAD_TABLE L"upload_table"
#define UPLOAD_TABLE_COLUMNS L"id integer primary key autoincrement, sia_path text unique not null, file_path text unique not null, temp_path text unique not null, status integer not null"
#define QUERY_UPLOADS_BY_STATUS "select id, sia_path, status from upload_table where status=@status order by id desc limit 1;"
#define QUERY_UPLOADS_BY_2_STATUS "select id, sia_path, status from upload_table where (status=@status1 or status=@status2) order by id desc limit 1;"
#define QUERY_UPLOADS_BY_SIA_PATH "select id, sia_path, status from upload_table where sia_path=@sia_path order by id desc limit 1;"
#define QUERY_UPLOADS_BY_SIA_PATH_AND_2_STATUS "select id, sia_path, status from upload_table where sia_path=@sia_path and (status=@status1 or status=@status2) order by id desc limit 1;"
template <typename... Ts>
String fmt(const String &fmt, Ts... vs)
{
size_t required = _sntprintf(nullptr, 0, fmt.c_str(), vs...);
String ret;
ret.resize(required);
_sntprintf(&ret[0], required, fmt.c_str(), vs...);
return ret;
}
static void CreateTableIfNotFound(SQLite::Database* database, const String& tableName, const String& columns)
{
String sqlCreate = fmt(TABLE_CREATE, &tableName[0], &columns[0]);
database->exec(CW2A(sqlCreate.c_str()));
}
CUploadManager::CUploadManager(const CSiaCurl& siaCurl, CSiaDriveConfig* siaDriveConfig) :
CAutoThread(siaCurl, siaDriveConfig),
_uploadDatabase(siaDriveConfig->GetRenter_UploadDbFilePath(), SQLite::OPEN_CREATE | SQLite::OPEN_READWRITE),
_siaDriveConfig(siaDriveConfig)
{
CreateTableIfNotFound(&_uploadDatabase, UPLOAD_TABLE, UPLOAD_TABLE_COLUMNS);
StartAutoThread();
}
CUploadManager::~CUploadManager()
{
StopAutoThread();
}
void CUploadManager::AutoThreadCallback(const CSiaCurl& siaCurl, CSiaDriveConfig* siaDriveConfig)
{
bool processNext = true;
try
{
CSiaFileTreePtr fileTree(new CSiaFileTree(siaCurl, siaDriveConfig));
json result;
if (ApiSuccess(siaCurl.Get(L"/renter/files", result)))
{
// Lock here - if file is modified again before a prior upload is complete, delete it and
// start again later
std::lock_guard<std::mutex> l(_uploadMutex);
SQLite::Statement query(_uploadDatabase, QUERY_UPLOADS_BY_2_STATUS);
query.bind("@status1", static_cast<unsigned>(UploadStatus::Uploading));
query.bind("@status2", static_cast<unsigned>(UploadStatus::Modified));
fileTree->BuildTree(result);
if (query.executeStep())
{
std::string tempSiaPath = query.getColumn(1);
String siaPath = CA2W(tempSiaPath.c_str()).m_psz;
UploadStatus uploadStatus = static_cast<UploadStatus>(query.getColumn(2).getUInt());
auto fileList = fileTree->GetFileList();
auto it = std::find_if(fileList.begin(), fileList.end(), [&](const CSiaFilePtr& ptr)
{
return ptr->GetSiaPath() == siaPath;
});
if (it == fileList.end())
{
// error condition - should always exist. delete from db and log warning, but continue processing
}
else if (uploadStatus == UploadStatus::Modified)
{
// delete existing, change status to queued
}
else if ((*it)->GetUploadProgress() >= 100)
{
// upload complete - change status
}
else
{
// upload still active
processNext = false;
}
}
}
else
{
// error condition - host down?
processNext = false;
}
}
catch (const SQLite::Exception& e)
{
// error condition - database not initialized (i.e. no table)?
std::string msg = e.what();
processNext = false;
}
if (processNext)
{
try
{
SQLite::Statement query(_uploadDatabase, QUERY_UPLOADS_BY_STATUS);
query.bind("@status", static_cast<unsigned>(UploadStatus::Queued));
// Lock here - if file is modified again before a prior upload is complete, delete it and
// start again later
if (query.executeStep())
{
String siaPath = CA2W(query.getColumn(1)).m_psz;
String tempFilePath;
json response;
SiaCurlError cerror = siaCurl.Post(String(L"/renter/upload/") + siaPath, { {L"source", tempFilePath} }, response);
if (ApiSuccess(cerror))
{
// TODO Update status in DB
}
}
}
catch (const SQLite::Exception& e)
{
// error condition
std::string msg = e.what();
}
}
}
UploadStatus CUploadManager::GetUploadStatus(const String& siaPath)
{
UploadStatus uploadStatus = UploadStatus::NotFound;
SQLite::Statement query(_uploadDatabase, QUERY_UPLOADS_BY_SIA_PATH);
query.bind("@sia_path", CW2A(siaPath.c_str()).m_psz);
if (query.executeStep())
{
uploadStatus = static_cast<UploadStatus>(static_cast<unsigned>(query.getColumn(2)));
}
return uploadStatus;
}
void CUploadManager::AddOrUpdate(const String& siaPath, const String& filePath)
{
// Lock here - if file is modified again before a prior upload is complete, delete it and
// start again later
std::lock_guard<std::mutex> l(_uploadMutex);
SQLite::Statement query(_uploadDatabase, QUERY_UPLOADS_BY_SIA_PATH_AND_2_STATUS);
query.bind("@sia_path", CW2A(siaPath.c_str()).m_psz);
query.bind("@status1", static_cast<unsigned>(UploadStatus::Uploading));
query.bind("@status2", static_cast<unsigned>(UploadStatus::Modified));
// Check copying
if (query.executeStep())
{
if (static_cast<UploadStatus>(static_cast<unsigned>(query.getColumn(2))) == UploadStatus::Uploading)
{
// set to modified
// update file path
}
}
else
{
/*SQLite::Statement addOrUpdate(_uploadDatabase, ADD_UPDATE_UPLOAD);
addOrUpdate.bind("@sia_path", CW2A(siaPath.c_str()).m_psz);
addOrUpdate.bind("@file_path", CW2A(filePath.c_str()).m_psz);
addOrUpdate.bind("@temp_path", CW2A(tempPath.c_str()).m_psz);
addOrUpdate.bind("@status", static_cast<unsigned>(UploadStatus::Queued));*/
// While copy is active, point to normal file.
// After copy, use temp file as real file until upload is complete
// This allows modifications to the file to occur in a more timely manner.
// Error Scenarios:
// Crash before db update to status copying - file will be re-uploaded automatically, if complete; otherwise, deleted
// Need to keep track of files as being copied and then there status
// Crash Scenarios:
// Crash before copy begins - on startup, check for copying status with no .siadrive
// Crash during copy - on startup, check for copying status and delete .siadrive
// Crash after copy but before db update - on startup, check for copying status and delete .siadrive
String tempPath;
tempPath.resize(MAX_PATH + 1);
PathCombine(&tempPath[0], CA2W(_siaDriveConfig->GetTempFolder().c_str()), (GenerateSha256(filePath) + L".siadrive").c_str());
// Queue this
if (::CopyFile(filePath.c_str(), tempPath.c_str(), FALSE))
{
tempPath = L"";
}
else
{
if (!::DeleteFile(tempPath.c_str()))
{
}
// error condition
}
}
}
void CUploadManager::PurgeCompleteStatus()
{
}
void CUploadManager::PurgeErrorStatus()
{
}
void CUploadManager::Remove(const String& siaPath)
{
}