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/*
* Copyright (C) 2025 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "ResourceMonitorPersistence.h"
#include "Logging.h"
#include "SQLiteStatement.h"
#include <wtf/FileSystem.h>
#include <wtf/Seconds.h>
#include <wtf/StdLibExtras.h>
#include <wtf/text/MakeString.h>
#if ENABLE(CONTENT_EXTENSIONS)
#define RESOURCEMONITOR_RELEASE_LOG(fmt, ...) RELEASE_LOG(ResourceMonitoring, "ResourceMonitorPersistence::" fmt, ##__VA_ARGS__)
namespace WebCore {
ResourceMonitorPersistence::ResourceMonitorPersistence()
{
ASSERT(!isMainThread());
}
ResourceMonitorPersistence::~ResourceMonitorPersistence()
{
ASSERT(!isMainThread());
if (m_sqliteDB)
closeDatabase();
}
static constexpr auto recordTableName = "records"_s;
static constexpr auto hostIndexName = "idx_records_host"_s;
static constexpr auto accessIndexName = "idx_records_access"_s;
static constexpr auto createRecordTableSQL = "CREATE TABLE records (host TEXT NOT NULL, access REAL NOT NULL)"_s;
static constexpr auto createHostIndexSQL = "CREATE INDEX idx_records_host ON records(host)"_s;
static constexpr auto createAccessIndexSQL = "CREATE INDEX idx_records_access ON records(access)"_s;
static constexpr auto selectAllRecordsSQL = "SELECT host,access FROM records ORDER BY access"_s;
static constexpr auto deleteAllRecordsSQL = "DELETE FROM records"_s;
static constexpr auto deleteExpiredRecordsSQL = "DELETE FROM records WHERE access < ?"_s;
static constexpr auto insertRecordSQL = "INSERT INTO records (host, access) VALUES (?, ?)"_s;
static double continuousApproximateTimeToDouble(ContinuousApproximateTime time)
{
return time.approximateWallTime().secondsSinceEpoch().value();
}
static ContinuousApproximateTime doubleToContinuousApproximateTime(double timestamp)
{
auto wallTime = WallTime::fromRawSeconds(timestamp);
return ContinuousApproximateTime::fromWallTime(wallTime);
}
void ResourceMonitorPersistence::reportSQLError(ASCIILiteral method, ASCIILiteral action)
{
RELEASE_LOG_ERROR(ResourceMonitoring, "ResourceMonitorPersistence::%" PUBLIC_LOG_STRING ": Failed to %" PUBLIC_LOG_STRING " (%d) - %" PUBLIC_LOG_STRING, method.characters(), action.characters(), m_sqliteDB->lastError(), m_sqliteDB->lastErrorMsg());
}
bool ResourceMonitorPersistence::openDatabase(String&& path)
{
ASSERT(!isMainThread());
FileSystem::makeAllDirectories(FileSystem::parentPath(path));
m_sqliteDB = makeUnique<SQLiteDatabase>();
auto reportErrorAndCloseDatabase = [&](ASCIILiteral action) {
reportSQLError("openDatabase"_s, action);
closeDatabase();
return false;
};
if (!m_sqliteDB->open(path, SQLiteDatabase::OpenMode::ReadWriteCreate, SQLiteDatabase::OpenOptions::CanSuspendWhileLocked))
return reportErrorAndCloseDatabase("open database"_s);
if (!m_sqliteDB->tableExists(recordTableName)) {
if (!m_sqliteDB->executeCommand(createRecordTableSQL))
return reportErrorAndCloseDatabase("create `record` table"_s);
RESOURCEMONITOR_RELEASE_LOG("openDatabase: Table %" PUBLIC_LOG_STRING " created", recordTableName.characters());
}
if (!m_sqliteDB->indexExists(hostIndexName)) {
if (!m_sqliteDB->executeCommand(createHostIndexSQL))
return reportErrorAndCloseDatabase("create `host` index on `record` table"_s);
RESOURCEMONITOR_RELEASE_LOG("openDatabase: Index %" PUBLIC_LOG_STRING " created", hostIndexName.characters());
}
if (!m_sqliteDB->indexExists(accessIndexName)) {
if (!m_sqliteDB->executeCommand(createAccessIndexSQL))
return reportErrorAndCloseDatabase("create `access` index on `record` table"_s);
RESOURCEMONITOR_RELEASE_LOG("openDatabase: Index %" PUBLIC_LOG_STRING " created", accessIndexName.characters());
}
auto insertStatement = m_sqliteDB->prepareHeapStatement(insertRecordSQL);
if (!insertStatement)
return reportErrorAndCloseDatabase("prepare insert statement"_s);
m_insertSQLStatement = insertStatement.value().moveToUniquePtr();
m_sqliteDB->turnOnIncrementalAutoVacuum();
return true;
}
void ResourceMonitorPersistence::deleteAllRecords()
{
ASSERT(!isMainThread());
auto deleteStatement = m_sqliteDB->prepareStatement(deleteAllRecordsSQL);
if (!deleteStatement || !deleteStatement->executeCommand())
return reportSQLError("deleteAllRecords"_s, "delete all records"_s);
RESOURCEMONITOR_RELEASE_LOG("deleteAllRecords: Deleted all records");
}
void ResourceMonitorPersistence::deleteExpiredRecords(ContinuousApproximateTime now, Seconds duration)
{
ASSERT(!isMainThread());
auto expirationTime = continuousApproximateTimeToDouble(now - duration);
auto deleteStatement = m_sqliteDB->prepareStatement(deleteExpiredRecordsSQL);
if (!deleteStatement || deleteStatement->bindDouble(1, expirationTime) != SQLITE_OK || !deleteStatement->executeCommand())
return reportSQLError("deleteExpiredRecords"_s, "delete expired records"_s);
RESOURCEMONITOR_RELEASE_LOG("deleteExpiredRecords: Deleted expired records");
}
Vector<ResourceMonitorPersistence::Record> ResourceMonitorPersistence::importRecords()
{
ASSERT(!isMainThread());
auto selectStatement = m_sqliteDB->prepareStatement(selectAllRecordsSQL);
if (!selectStatement) {
reportSQLError("importRecords"_s, "fetch records of host and access"_s);
return { };
}
Vector<Record> records;
while (selectStatement->step() == SQLITE_ROW) {
auto host = selectStatement->columnText(0);
auto access = selectStatement->columnDouble(1);
records.append({ host, doubleToContinuousApproximateTime(access) });
}
return records;
}
void ResourceMonitorPersistence::recordAccess(const String& host, ContinuousApproximateTime time)
{
ASSERT(!isMainThread());
if (!m_insertSQLStatement)
return;
m_insertSQLStatement->reset();
double access = continuousApproximateTimeToDouble(time);
if (m_insertSQLStatement->bindText(1, host) != SQLITE_OK || m_insertSQLStatement->bindDouble(2, access) != SQLITE_OK || !m_insertSQLStatement->executeCommand())
RESOURCEMONITOR_RELEASE_LOG("recordAccess: Failed to insert record (%d) - %" PUBLIC_LOG_STRING, m_sqliteDB->lastError(), m_sqliteDB->lastErrorMsg());
}
void ResourceMonitorPersistence::closeDatabase()
{
ASSERT(!isMainThread());
m_insertSQLStatement = nullptr;
if (isDatabaseOpen()) {
RESOURCEMONITOR_RELEASE_LOG("closeDatabase: Closing database");
m_sqliteDB->close();
}
m_sqliteDB = nullptr;
}
} // namespace WebCore
#undef RESOURCEMONITOR_RELEASE_LOG
#endif
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