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/*
* Copyright (C) 2012-2018 Team Kodi
* This file is part of Kodi - https://kodi.tv
*
* SPDX-License-Identifier: GPL-2.0-or-later
* See LICENSES/README.md for more information.
*/
#include "DatabaseManager.h"
#include "ServiceBroker.h"
#include "TextureDatabase.h"
#include "addons/AddonDatabase.h"
#include "music/MusicDatabase.h"
#include "pvr/PVRDatabase.h"
#include "pvr/epg/EpgDatabase.h"
#include "settings/AdvancedSettings.h"
#include "settings/SettingsComponent.h"
#include "utils/log.h"
#include "video/VideoDatabase.h"
#include "view/ViewDatabase.h"
#include <mutex>
using namespace PVR;
CDatabaseManager::CDatabaseManager() :
m_bIsUpgrading(false)
{
// Initialize the addon database (must be before the addon manager is init'd)
ADDON::CAddonDatabase db;
UpdateDatabase(db);
}
CDatabaseManager::~CDatabaseManager() = default;
void CDatabaseManager::Initialize()
{
std::unique_lock<CCriticalSection> lock(m_section);
m_dbStatus.clear();
CLog::Log(LOGDEBUG, "{}, updating databases...", __FUNCTION__);
const std::shared_ptr<CAdvancedSettings> advancedSettings = CServiceBroker::GetSettingsComponent()->GetAdvancedSettings();
// NOTE: Order here is important. In particular, CTextureDatabase has to be updated
// before CVideoDatabase.
{
ADDON::CAddonDatabase db;
UpdateDatabase(db);
}
{ CViewDatabase db; UpdateDatabase(db); }
{ CTextureDatabase db; UpdateDatabase(db); }
{ CMusicDatabase db; UpdateDatabase(db, &advancedSettings->m_databaseMusic); }
{ CVideoDatabase db; UpdateDatabase(db, &advancedSettings->m_databaseVideo); }
{ CPVRDatabase db; UpdateDatabase(db, &advancedSettings->m_databaseTV); }
{ CPVREpgDatabase db; UpdateDatabase(db, &advancedSettings->m_databaseEpg); }
CLog::Log(LOGDEBUG, "{}, updating databases... DONE", __FUNCTION__);
m_bIsUpgrading = false;
}
bool CDatabaseManager::CanOpen(const std::string &name)
{
std::unique_lock<CCriticalSection> lock(m_section);
std::map<std::string, DB_STATUS>::const_iterator i = m_dbStatus.find(name);
if (i != m_dbStatus.end())
return i->second == DB_READY;
return false; // db isn't even attempted to update yet
}
void CDatabaseManager::UpdateDatabase(CDatabase &db, DatabaseSettings *settings)
{
std::string name = db.GetBaseDBName();
UpdateStatus(name, DB_UPDATING);
if (Update(db, settings ? *settings : DatabaseSettings()))
UpdateStatus(name, DB_READY);
else
UpdateStatus(name, DB_FAILED);
}
bool CDatabaseManager::Update(CDatabase &db, const DatabaseSettings &settings)
{
DatabaseSettings dbSettings = settings;
db.InitSettings(dbSettings);
int version = db.GetSchemaVersion();
std::string latestDb = dbSettings.name;
latestDb += std::to_string(version);
while (version >= db.GetMinSchemaVersion())
{
std::string dbName = dbSettings.name;
if (version)
dbName += std::to_string(version);
if (db.Connect(dbName, dbSettings, false))
{
// Database exists, take a copy for our current version (if needed) and reopen that one
if (version < db.GetSchemaVersion())
{
CLog::Log(LOGINFO, "Old database found - updating from version {} to {}", version,
db.GetSchemaVersion());
m_bIsUpgrading = true;
bool copy_fail = false;
try
{
db.CopyDB(latestDb);
}
catch (...)
{
CLog::Log(LOGERROR, "Unable to copy old database {} to new version {}", dbName, latestDb);
copy_fail = true;
}
db.Close();
if (copy_fail)
return false;
if (!db.Connect(latestDb, dbSettings, false))
{
CLog::Log(LOGERROR, "Unable to open freshly copied database {}", latestDb);
return false;
}
}
// yay - we have a copy of our db, now do our worst with it
if (UpdateVersion(db, latestDb))
return true;
// update failed - loop around and see if we have another one available
db.Close();
}
// drop back to the previous version and try that
version--;
}
// try creating a new one
if (db.Connect(latestDb, dbSettings, true))
return true;
// failed to update or open the database
db.Close();
CLog::Log(LOGERROR, "Unable to create new database");
return false;
}
bool CDatabaseManager::UpdateVersion(CDatabase &db, const std::string &dbName)
{
int version = db.GetDBVersion();
bool bReturn = false;
if (version < db.GetMinSchemaVersion())
{
CLog::Log(LOGERROR, "Can't update database {} from version {} - it's too old", dbName, version);
return false;
}
else if (version < db.GetSchemaVersion())
{
CLog::Log(LOGINFO, "Attempting to update the database {} from version {} to {}", dbName,
version, db.GetSchemaVersion());
bool success = true;
db.BeginTransaction();
try
{
// drop old analytics
db.DropAnalytics();
}
catch (...)
{
success = false;
}
if (!success)
{
CLog::Log(LOGERROR, "Exception droping old analytics from {}", dbName);
db.RollbackTransaction();
return false;
}
db.CommitTransaction();
db.BeginTransaction();
try
{
// update table(s), recreate analytics, update version
db.UpdateTables(version);
db.CreateAnalytics();
db.UpdateVersionNumber();
}
catch (...)
{
CLog::Log(LOGERROR, "Exception updating database {} from version {} to {}", dbName, version,
db.GetSchemaVersion());
success = false;
}
if (!success)
{
CLog::Log(LOGERROR, "Error updating database {} from version {} to {}", dbName, version,
db.GetSchemaVersion());
db.RollbackTransaction();
return false;
}
bReturn = db.CommitTransaction();
CLog::Log(LOGINFO, "Update to version {} successful", db.GetSchemaVersion());
}
else if (version > db.GetSchemaVersion())
{
bReturn = false;
CLog::Log(LOGERROR,
"Can't open the database {} as it is a NEWER version than what we were expecting?",
dbName);
}
else
{
bReturn = true;
CLog::Log(LOGINFO, "Running database version {}", dbName);
}
return bReturn;
}
void CDatabaseManager::UpdateStatus(const std::string &name, DB_STATUS status)
{
std::unique_lock<CCriticalSection> lock(m_section);
m_dbStatus[name] = status;
}
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