nymea-experience-plugin-energy/plugin/energylogger.cpp

1850 lines
82 KiB
C++

// SPDX-License-Identifier: GPL-3.0-or-later
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
*
* Copyright (C) 2013 - 2024, nymea GmbH
* Copyright (C) 2024 - 2025, chargebyte austria GmbH
*
* This file is part of nymea-experience-plugin-energy.
*
* nymea-experience-plugin-energy is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* nymea-experience-plugin-energy is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with nymea-experience-plugin-energy. If not, see <https://www.gnu.org/licenses/>.
*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
#include "energylogger.h"
#include <nymeasettings.h>
#include <QStandardPaths>
#include <QDir>
#include <QSqlQuery>
#include <QSqlError>
#include <QSqlRecord>
#include <QSqlIndex>
#include <QSettings>
#include <QElapsedTimer>
#include <QPointer>
#include <QUuid>
#include <QLoggingCategory>
Q_DECLARE_LOGGING_CATEGORY(dcEnergyExperience)
namespace {
struct MaintenanceConfig {
EnergyLogs::SampleRate sampleRate = EnergyLogs::SampleRateAny;
EnergyLogs::SampleRate baseSampleRate = EnergyLogs::SampleRateAny;
uint maxSamples = 0;
};
struct BalanceTotals {
double totalConsumption = 0;
double totalProduction = 0;
double totalAcquisition = 0;
double totalReturn = 0;
};
struct ThingTotals {
double totalConsumption = 0;
double totalProduction = 0;
};
QDateTime maintenanceNextSampleTimestamp(EnergyLogs::SampleRate sampleRate, const QDateTime &dateTime)
{
QTime time = dateTime.time();
QDate date = dateTime.date();
QDateTime next;
switch (sampleRate) {
case EnergyLogs::SampleRateAny:
return QDateTime();
case EnergyLogs::SampleRate1Min:
time.setHMS(time.hour(), time.minute(), 0);
next = QDateTime(date, time).addMSecs(60 * 1000);
break;
case EnergyLogs::SampleRate15Mins:
time.setHMS(time.hour(), time.minute() - (time.minute() % 15), 0);
next = QDateTime(date, time).addMSecs(15 * 60 * 1000);
break;
case EnergyLogs::SampleRate1Hour:
time.setHMS(time.hour(), 0, 0);
next = QDateTime(date, time).addMSecs(60 * 60 * 1000);
break;
case EnergyLogs::SampleRate3Hours:
time.setHMS(time.hour() - (time.hour() % 3), 0, 0);
next = QDateTime(date, time).addMSecs(3 * 60 * 60 * 1000);
if (next.time().hour() == 2) {
next = next.addMSecs(60 * 60 * 1000);
}
break;
case EnergyLogs::SampleRate1Day:
next = QDateTime(date, QTime()).addDays(1);
break;
case EnergyLogs::SampleRate1Week:
date = date.addDays(-date.dayOfWeek() + 1);
next = QDateTime(date, QTime()).addDays(7);
break;
case EnergyLogs::SampleRate1Month:
date = date.addDays(-date.day() + 1);
next = QDateTime(date, QTime()).addMonths(1);
break;
case EnergyLogs::SampleRate1Year:
date.setDate(date.year(), 1, 1);
next = QDateTime(date, QTime()).addYears(1);
break;
}
return next;
}
QDateTime maintenanceCalculateSampleStart(const QDateTime &sampleEnd, EnergyLogs::SampleRate sampleRate, int sampleCount = 1)
{
if (sampleRate == EnergyLogs::SampleRate1Month) {
return sampleEnd.addMonths(-sampleCount);
} else if (sampleRate == EnergyLogs::SampleRate1Year) {
return sampleEnd.addYears(-sampleCount);
}
return sampleEnd.addMSecs(-(quint64)sampleCount * sampleRate * 60 * 1000);
}
QList<ThingId> maintenanceLoggedThings(QSqlDatabase &db)
{
QList<ThingId> ret;
QSqlQuery query(db);
query.prepare(QStringLiteral("SELECT DISTINCT thingId FROM thingPower;"));
if (!query.exec()) {
qCWarning(dcEnergyExperience()) << "Failed to load existing things from logs:" << query.lastError();
return ret;
}
while (query.next()) {
ret.append(query.value("thingId").toUuid());
}
return ret;
}
QDateTime maintenanceGetOldestPowerBalanceSampleTimestamp(QSqlDatabase &db, EnergyLogs::SampleRate sampleRate)
{
QSqlQuery query(db);
query.prepare(QStringLiteral("SELECT MIN(timestamp) AS oldestTimestamp FROM powerBalance WHERE sampleRate = ?;"));
query.addBindValue(sampleRate);
if (!query.exec()) {
qCWarning(dcEnergyExperience()) << "Failed to query oldest powerBalance timestamp:" << query.lastError();
return QDateTime();
}
if (query.next() && !query.value("oldestTimestamp").isNull()) {
return QDateTime::fromMSecsSinceEpoch(query.value("oldestTimestamp").toLongLong());
}
return QDateTime();
}
QDateTime maintenanceGetNewestPowerBalanceSampleTimestamp(QSqlDatabase &db, EnergyLogs::SampleRate sampleRate)
{
QSqlQuery query(db);
query.prepare(QStringLiteral("SELECT MAX(timestamp) AS newestTimestamp FROM powerBalance WHERE sampleRate = ?;"));
query.addBindValue(sampleRate);
if (!query.exec()) {
qCWarning(dcEnergyExperience()) << "Failed to query newest powerBalance timestamp:" << query.lastError();
return QDateTime();
}
if (query.next() && !query.value("newestTimestamp").isNull()) {
return QDateTime::fromMSecsSinceEpoch(query.value("newestTimestamp").toLongLong());
}
return QDateTime();
}
QDateTime maintenanceGetOldestThingPowerSampleTimestamp(QSqlDatabase &db, const ThingId &thingId, EnergyLogs::SampleRate sampleRate)
{
QSqlQuery query(db);
query.prepare(QStringLiteral("SELECT MIN(timestamp) AS oldestTimestamp FROM thingPower WHERE thingId = ? AND sampleRate = ?;"));
query.addBindValue(thingId);
query.addBindValue(sampleRate);
if (!query.exec()) {
qCWarning(dcEnergyExperience()) << "Failed to query oldest thingPower timestamp:" << thingId << query.lastError();
return QDateTime();
}
if (query.next() && !query.value("oldestTimestamp").isNull()) {
return QDateTime::fromMSecsSinceEpoch(query.value("oldestTimestamp").toLongLong());
}
return QDateTime();
}
QDateTime maintenanceGetNewestThingPowerSampleTimestamp(QSqlDatabase &db, const ThingId &thingId, EnergyLogs::SampleRate sampleRate)
{
QSqlQuery query(db);
query.prepare(QStringLiteral("SELECT MAX(timestamp) AS newestTimestamp FROM thingPower WHERE thingId = ? AND sampleRate = ?;"));
query.addBindValue(thingId);
query.addBindValue(sampleRate);
if (!query.exec()) {
qCWarning(dcEnergyExperience()) << "Failed to query newest thingPower timestamp:" << thingId << query.lastError();
return QDateTime();
}
if (query.next() && !query.value("newestTimestamp").isNull()) {
return QDateTime::fromMSecsSinceEpoch(query.value("newestTimestamp").toLongLong());
}
return QDateTime();
}
BalanceTotals maintenanceLatestPowerBalanceTotals(QSqlDatabase &db, EnergyLogs::SampleRate sampleRate)
{
BalanceTotals totals;
QSqlQuery query(db);
query.prepare(QStringLiteral("SELECT totalConsumption, totalProduction, totalAcquisition, totalReturn FROM powerBalance WHERE sampleRate = ? ORDER BY timestamp DESC LIMIT 1;"));
query.addBindValue(sampleRate);
if (!query.exec()) {
qCWarning(dcEnergyExperience()) << "Failed to query latest powerBalance totals:" << sampleRate << query.lastError();
return totals;
}
if (!query.next()) {
return totals;
}
totals.totalConsumption = query.value("totalConsumption").toDouble();
totals.totalProduction = query.value("totalProduction").toDouble();
totals.totalAcquisition = query.value("totalAcquisition").toDouble();
totals.totalReturn = query.value("totalReturn").toDouble();
return totals;
}
ThingTotals maintenanceLatestThingTotals(QSqlDatabase &db, EnergyLogs::SampleRate sampleRate, const ThingId &thingId)
{
ThingTotals totals;
QSqlQuery query(db);
query.prepare(QStringLiteral("SELECT totalConsumption, totalProduction FROM thingPower WHERE thingId = ? AND sampleRate = ? ORDER BY timestamp DESC LIMIT 1;"));
query.addBindValue(thingId);
query.addBindValue(sampleRate);
if (!query.exec()) {
qCWarning(dcEnergyExperience()) << "Failed to query latest thingPower totals:" << sampleRate << thingId << query.lastError();
return totals;
}
if (!query.next()) {
return totals;
}
totals.totalConsumption = query.value("totalConsumption").toDouble();
totals.totalProduction = query.value("totalProduction").toDouble();
return totals;
}
bool maintenanceInsertPowerBalance(QSqlDatabase &db, const QDateTime &timestamp, EnergyLogs::SampleRate sampleRate,
double consumption, double production, double acquisition, double storage,
double totalConsumption, double totalProduction, double totalAcquisition, double totalReturn)
{
QSqlQuery query(db);
query.prepare(QStringLiteral("INSERT INTO powerBalance (timestamp, sampleRate, consumption, production, acquisition, storage, totalConsumption, totalProduction, totalAcquisition, totalReturn) values (?, ?, ?, ?, ?, ?, ?, ?, ?, ?);"));
query.addBindValue(timestamp.toMSecsSinceEpoch());
query.addBindValue(sampleRate);
query.addBindValue(consumption);
query.addBindValue(production);
query.addBindValue(acquisition);
query.addBindValue(storage);
query.addBindValue(totalConsumption);
query.addBindValue(totalProduction);
query.addBindValue(totalAcquisition);
query.addBindValue(totalReturn);
if (!query.exec()) {
qCWarning(dcEnergyExperience()) << "Error logging power balance sample:" << query.lastError() << query.executedQuery();
return false;
}
return true;
}
bool maintenanceInsertThingPower(QSqlDatabase &db, const QDateTime &timestamp, EnergyLogs::SampleRate sampleRate, const ThingId &thingId,
double currentPower, double totalConsumption, double totalProduction)
{
QSqlQuery query(db);
query.prepare(QStringLiteral("INSERT INTO thingPower (timestamp, sampleRate, thingId, currentPower, totalConsumption, totalProduction) values (?, ?, ?, ?, ?, ?);"));
query.addBindValue(timestamp.toMSecsSinceEpoch());
query.addBindValue(sampleRate);
query.addBindValue(thingId);
query.addBindValue(currentPower);
query.addBindValue(totalConsumption);
query.addBindValue(totalProduction);
if (!query.exec()) {
qCWarning(dcEnergyExperience()) << "Error logging thing power sample:" << query.lastError() << query.executedQuery();
return false;
}
return true;
}
bool maintenanceSamplePowerBalance(QSqlDatabase &db, EnergyLogs::SampleRate sampleRate, EnergyLogs::SampleRate baseSampleRate, const QDateTime &sampleEnd)
{
QDateTime sampleStart = maintenanceCalculateSampleStart(sampleEnd, sampleRate);
double medianConsumption = 0;
double medianProduction = 0;
double medianAcquisition = 0;
double medianStorage = 0;
double totalConsumption = 0;
double totalProduction = 0;
double totalAcquisition = 0;
double totalReturn = 0;
QSqlQuery query(db);
query.prepare(QStringLiteral("SELECT * FROM powerBalance WHERE sampleRate = ? AND timestamp > ? AND timestamp <= ? ORDER BY timestamp ASC;"));
query.addBindValue(baseSampleRate);
query.addBindValue(sampleStart.toMSecsSinceEpoch());
query.addBindValue(sampleEnd.toMSecsSinceEpoch());
if (!query.exec()) {
qCWarning(dcEnergyExperience()) << "Error fetching power balance samples for" << baseSampleRate << "from" << sampleStart.toString() << "to" << sampleEnd.toString();
qCWarning(dcEnergyExperience()) << "SQL error was:" << query.lastError() << "executed query:" << query.executedQuery();
return false;
}
int resultCount = 0;
while (query.next()) {
if (QThread::currentThread()->isInterruptionRequested()) {
return false;
}
resultCount++;
medianConsumption += query.value("consumption").toDouble();
medianProduction += query.value("production").toDouble();
medianAcquisition += query.value("acquisition").toDouble();
medianStorage += query.value("storage").toDouble();
totalConsumption = query.value("totalConsumption").toDouble();
totalProduction = query.value("totalProduction").toDouble();
totalAcquisition = query.value("totalAcquisition").toDouble();
totalReturn = query.value("totalReturn").toDouble();
}
if (resultCount > 0) {
medianConsumption = medianConsumption * baseSampleRate / sampleRate;
medianProduction = medianProduction * baseSampleRate / sampleRate;
medianAcquisition = medianAcquisition * baseSampleRate / sampleRate;
medianStorage = medianStorage * baseSampleRate / sampleRate;
} else {
query = QSqlQuery(db);
query.prepare(QStringLiteral("SELECT * FROM powerBalance WHERE sampleRate = ? ORDER BY timestamp DESC LIMIT 1;"));
query.addBindValue(baseSampleRate);
if (!query.exec()) {
qCWarning(dcEnergyExperience()) << "Error fetching newest power balance sample for" << baseSampleRate;
qCWarning(dcEnergyExperience()) << "SQL error was:" << query.lastError() << "executed query:" << query.executedQuery();
return false;
}
if (query.next()) {
totalConsumption = query.value("totalConsumption").toDouble();
totalProduction = query.value("totalProduction").toDouble();
totalAcquisition = query.value("totalAcquisition").toDouble();
totalReturn = query.value("totalReturn").toDouble();
}
}
return maintenanceInsertPowerBalance(db, sampleEnd, sampleRate, medianConsumption, medianProduction, medianAcquisition, medianStorage, totalConsumption, totalProduction, totalAcquisition, totalReturn);
}
bool maintenanceSampleThingPower(QSqlDatabase &db, const ThingId &thingId, EnergyLogs::SampleRate sampleRate, EnergyLogs::SampleRate baseSampleRate, const QDateTime &sampleEnd)
{
QDateTime sampleStart = maintenanceCalculateSampleStart(sampleEnd, sampleRate);
double medianCurrentPower = 0;
double totalConsumption = 0;
double totalProduction = 0;
QSqlQuery query(db);
query.prepare(QStringLiteral("SELECT * FROM thingPower WHERE thingId = ? AND sampleRate = ? AND timestamp > ? AND timestamp <= ? ORDER BY timestamp ASC;"));
query.addBindValue(thingId);
query.addBindValue(baseSampleRate);
query.addBindValue(sampleStart.toMSecsSinceEpoch());
query.addBindValue(sampleEnd.toMSecsSinceEpoch());
if (!query.exec()) {
qCWarning(dcEnergyExperience()) << "Error fetching thing power samples for" << baseSampleRate << "from" << sampleStart.toString() << "to" << sampleEnd.toString();
qCWarning(dcEnergyExperience()) << "SQL error was:" << query.lastError() << "executed query:" << query.executedQuery();
return false;
}
int resultCount = 0;
while (query.next()) {
if (QThread::currentThread()->isInterruptionRequested()) {
return false;
}
resultCount++;
medianCurrentPower += query.value("currentPower").toDouble();
totalConsumption = query.value("totalConsumption").toDouble();
totalProduction = query.value("totalProduction").toDouble();
}
if (resultCount > 0) {
medianCurrentPower = medianCurrentPower * baseSampleRate / sampleRate;
} else {
query = QSqlQuery(db);
query.prepare(QStringLiteral("SELECT * FROM thingPower WHERE thingId = ? AND sampleRate = ? ORDER BY timestamp DESC LIMIT 1;"));
query.addBindValue(thingId);
query.addBindValue(baseSampleRate);
if (!query.exec()) {
qCWarning(dcEnergyExperience()) << "Error fetching newest thing power sample for" << thingId.toString() << baseSampleRate;
qCWarning(dcEnergyExperience()) << "SQL error was:" << query.lastError() << "executed query:" << query.executedQuery();
return false;
}
if (query.next()) {
totalConsumption = query.value("totalConsumption").toDouble();
totalProduction = query.value("totalProduction").toDouble();
}
}
return maintenanceInsertThingPower(db, sampleEnd, sampleRate, thingId, medianCurrentPower, totalConsumption, totalProduction);
}
void maintenanceRectifySamples(QSqlDatabase &db, EnergyLogs::SampleRate sampleRate, EnergyLogs::SampleRate baseSampleRate, uint maxSamples,
const QDateTime &nextScheduledSample, const QList<ThingId> &thingIds)
{
QDateTime oldestBaseSample = maintenanceGetOldestPowerBalanceSampleTimestamp(db, baseSampleRate);
QDateTime newestSample = maintenanceGetNewestPowerBalanceSampleTimestamp(db, sampleRate);
if (QThread::currentThread()->isInterruptionRequested()) {
return;
}
if (newestSample.isNull()) {
newestSample = oldestBaseSample;
}
if (!newestSample.isNull() && maintenanceNextSampleTimestamp(sampleRate, newestSample) < nextScheduledSample) {
QDateTime nextSample = maintenanceNextSampleTimestamp(sampleRate, newestSample.addMSecs(1000));
maintenanceSamplePowerBalance(db, sampleRate, baseSampleRate, nextSample);
newestSample = nextSample;
}
BalanceTotals latest = maintenanceLatestPowerBalanceTotals(db, sampleRate);
if (!newestSample.isNull()) {
newestSample = qMax(newestSample, maintenanceCalculateSampleStart(nextScheduledSample, sampleRate, (int)maxSamples));
}
db.transaction();
while (!newestSample.isNull() && maintenanceNextSampleTimestamp(sampleRate, newestSample) < nextScheduledSample) {
if (QThread::currentThread()->isInterruptionRequested()) {
db.rollback();
return;
}
QDateTime nextSample = maintenanceNextSampleTimestamp(sampleRate, newestSample.addMSecs(1000));
maintenanceInsertPowerBalance(db, nextSample, sampleRate, 0, 0, 0, 0, latest.totalConsumption, latest.totalProduction, latest.totalAcquisition, latest.totalReturn);
newestSample = nextSample;
}
db.commit();
foreach (const ThingId &thingId, thingIds) {
if (QThread::currentThread()->isInterruptionRequested()) {
return;
}
QDateTime oldestBaseSample = maintenanceGetOldestThingPowerSampleTimestamp(db, thingId, baseSampleRate);
QDateTime newestSample = maintenanceGetNewestThingPowerSampleTimestamp(db, thingId, sampleRate);
if (newestSample.isNull()) {
if (oldestBaseSample.isNull()) {
continue;
}
newestSample = oldestBaseSample;
}
if (!newestSample.isNull() && maintenanceNextSampleTimestamp(sampleRate, newestSample) < nextScheduledSample) {
QDateTime nextSample = maintenanceNextSampleTimestamp(sampleRate, newestSample.addMSecs(1000));
maintenanceSampleThingPower(db, thingId, sampleRate, baseSampleRate, nextSample);
newestSample = nextSample;
}
ThingTotals latest = maintenanceLatestThingTotals(db, sampleRate, thingId);
newestSample = qMax(newestSample, maintenanceCalculateSampleStart(nextScheduledSample, sampleRate, (int)maxSamples));
db.transaction();
while (!newestSample.isNull() && maintenanceNextSampleTimestamp(sampleRate, newestSample) < nextScheduledSample) {
if (QThread::currentThread()->isInterruptionRequested()) {
db.rollback();
return;
}
QDateTime nextSample = maintenanceNextSampleTimestamp(sampleRate, newestSample.addMSecs(1000));
maintenanceInsertThingPower(db, nextSample, sampleRate, thingId, 0, latest.totalConsumption, latest.totalProduction);
newestSample = nextSample;
}
db.commit();
}
}
void maintenanceFillMissingMinuteSamples(QSqlDatabase &db, int maxMinuteSamples, const QDateTime &fillUntil)
{
if (!fillUntil.isValid()) {
return;
}
// Power balance
QSqlQuery newestBalanceQuery(db);
newestBalanceQuery.prepare(QStringLiteral("SELECT timestamp, totalConsumption, totalProduction, totalAcquisition, totalReturn FROM powerBalance WHERE sampleRate = ? ORDER BY timestamp DESC LIMIT 1;"));
newestBalanceQuery.addBindValue(EnergyLogs::SampleRate1Min);
if (!newestBalanceQuery.exec()) {
qCWarning(dcEnergyExperience()) << "Failed to query newest power balance 1-min sample:" << newestBalanceQuery.lastError();
return;
}
if (newestBalanceQuery.next() && !newestBalanceQuery.value("timestamp").isNull()) {
QDateTime newestTimestamp = QDateTime::fromMSecsSinceEpoch(newestBalanceQuery.value("timestamp").toLongLong());
if (newestTimestamp < fillUntil) {
QDateTime oldestTimestamp = fillUntil.addMSecs(-(qint64)maxMinuteSamples * 60 * 1000);
QDateTime timestamp = newestTimestamp;
if (oldestTimestamp > newestTimestamp) {
// Avoid writing huge numbers of 0-samples when we'd trim them anyway.
timestamp = fillUntil.addMSecs(-60000);
}
BalanceTotals totals;
totals.totalConsumption = newestBalanceQuery.value("totalConsumption").toDouble();
totals.totalProduction = newestBalanceQuery.value("totalProduction").toDouble();
totals.totalAcquisition = newestBalanceQuery.value("totalAcquisition").toDouble();
totals.totalReturn = newestBalanceQuery.value("totalReturn").toDouble();
db.transaction();
while (timestamp < fillUntil) {
if (QThread::currentThread()->isInterruptionRequested()) {
db.rollback();
return;
}
timestamp = timestamp.addMSecs(60000);
maintenanceInsertPowerBalance(db, timestamp, EnergyLogs::SampleRate1Min, 0, 0, 0, 0, totals.totalConsumption, totals.totalProduction, totals.totalAcquisition, totals.totalReturn);
}
db.commit();
}
}
// Things
const QList<ThingId> thingIds = maintenanceLoggedThings(db);
foreach (const ThingId &thingId, thingIds) {
if (QThread::currentThread()->isInterruptionRequested()) {
return;
}
QSqlQuery newestThingQuery(db);
newestThingQuery.prepare(QStringLiteral("SELECT timestamp, totalConsumption, totalProduction FROM thingPower WHERE thingId = ? AND sampleRate = ? ORDER BY timestamp DESC LIMIT 1;"));
newestThingQuery.addBindValue(thingId);
newestThingQuery.addBindValue(EnergyLogs::SampleRate1Min);
if (!newestThingQuery.exec()) {
qCWarning(dcEnergyExperience()) << "Failed to query newest thing power 1-min sample:" << thingId << newestThingQuery.lastError();
continue;
}
if (!newestThingQuery.next() || newestThingQuery.value("timestamp").isNull()) {
continue;
}
QDateTime newestTimestamp = QDateTime::fromMSecsSinceEpoch(newestThingQuery.value("timestamp").toLongLong());
if (newestTimestamp >= fillUntil) {
continue;
}
QDateTime oldestTimestamp = fillUntil.addMSecs(-(qint64)maxMinuteSamples * 60 * 1000);
QDateTime timestamp = newestTimestamp;
if (oldestTimestamp > newestTimestamp) {
// Avoid writing huge numbers of 0-samples when we'd trim them anyway.
timestamp = fillUntil.addMSecs(-60000);
}
ThingTotals totals;
totals.totalConsumption = newestThingQuery.value("totalConsumption").toDouble();
totals.totalProduction = newestThingQuery.value("totalProduction").toDouble();
db.transaction();
while (timestamp < fillUntil) {
if (QThread::currentThread()->isInterruptionRequested()) {
db.rollback();
return;
}
timestamp = timestamp.addMSecs(60000);
maintenanceInsertThingPower(db, timestamp, EnergyLogs::SampleRate1Min, thingId, 0, totals.totalConsumption, totals.totalProduction);
}
db.commit();
}
}
} // namespace
EnergyLogger::EnergyLogger(QObject *parent)
: EnergyLogs(parent)
{
if (!initDB()) {
qCCritical(dcEnergyExperience()) << "Unable to open energy log. Energy logs will not be available.";
return;
}
// Logging configuration
// Note: SampleRate1Min is always sampled as it is the base series for others
// Make sure your base series always has enough samples to build a full sample
// of all series building on it.
// Disk space considerations;
// Each entry takes approx 50 bytes for powerBalance + 60 bytes for thingCurrentPower per thing of disk space
// SQLite adds metadata and overhead of about 5%
// The resulting database size can be estimated with (count being the sum of all numbers below):
// (count * 50 bytes) + (count * things * 60 bytes) + 5%
// ~40000 entries, with 5 energy things => ~15MB
// Note: use sqlite3_analyzer to see the approx. size per entry in each table.
// One day 1440 min, let's keep one week
m_maxMinuteSamples = 10080;
addConfig(SampleRate15Mins, SampleRate1Min, 16128); // 6 months
addConfig(SampleRate1Hour, SampleRate15Mins, 8760); // 1 year
addConfig(SampleRate3Hours, SampleRate15Mins, 2920); // 1 year
addConfig(SampleRate1Day, SampleRate1Hour, 1095); // 3 years
addConfig(SampleRate1Week, SampleRate1Day, 168); // 3 years
addConfig(SampleRate1Month, SampleRate1Day, 240); // 20 years
addConfig(SampleRate1Year, SampleRate1Month, 20); // 20 years
// Load last values from thingsPower logs so we have at least one base sample available for sampling, even if a thing might not produce any logs for a while.
foreach (const ThingId &thingId, loggedThings()) {
m_thingsPowerLiveLogs[thingId].append(latestLogEntry(SampleRate1Min, thingId));
}
// Start the scheduling
scheduleNextSample(SampleRate1Min);
foreach (SampleRate sampleRate, m_configs.keys()) {
scheduleNextSample(sampleRate);
}
// Now all the data is initialized. We can start with sampling.
// First check if we missed any samplings (e.g. because the system was offline at the time when it should have created a sample).
// This can take a long time (especially when filling long gaps) so run it in the background.
startDbMaintenance("startup resampling", calculateSampleStart(m_nextSamples.value(SampleRate1Min), SampleRate1Min));
// And start the sampler timer
connect(&m_sampleTimer, &QTimer::timeout, this, &EnergyLogger::sample);
m_sampleTimer.start(1000);
}
EnergyLogger::~EnergyLogger()
{
QThread *thread = m_dbMaintenanceThread;
m_dbMaintenanceThread = nullptr;
if (!thread) {
return;
}
thread->requestInterruption();
thread->wait();
delete thread;
}
void EnergyLogger::startDbMaintenance(const QString &reason, const QDateTime &fillMinuteSamplesUntil)
{
if (m_dbMaintenanceThread && m_dbMaintenanceThread->isRunning()) {
qCDebug(dcEnergyExperience()) << "Energy log DB maintenance thread already running. Skipping request:" << reason;
return;
}
if (m_dbMaintenanceThread) {
delete m_dbMaintenanceThread;
m_dbMaintenanceThread = nullptr;
}
if (m_dbMaintenanceRunning) {
qCDebug(dcEnergyExperience()) << "Energy log DB maintenance already running. Skipping request:" << reason;
return;
}
if (m_dbFilePath.isEmpty()) {
qCWarning(dcEnergyExperience()) << "Cannot start energy log DB maintenance without a database path.";
return;
}
m_dbMaintenanceRunning = true;
qCInfo(dcEnergyExperience()) << "Starting energy log DB maintenance in background:" << reason;
QList<MaintenanceConfig> configs;
for (auto it = m_configs.constBegin(); it != m_configs.constEnd(); ++it) {
MaintenanceConfig cfg;
cfg.sampleRate = it.key();
cfg.baseSampleRate = it.value().baseSampleRate;
cfg.maxSamples = it.value().maxSamples;
configs.append(cfg);
}
const int maxMinuteSamples = m_maxMinuteSamples;
const QString dbFilePath = m_dbFilePath;
const QHash<SampleRate, QDateTime> nextSamples = m_nextSamples;
QPointer<EnergyLogger> self(this);
QThread *thread = QThread::create([self, reason, dbFilePath, configs, maxMinuteSamples, fillMinuteSamplesUntil, nextSamples]() {
if (!self) {
return;
}
QElapsedTimer timer;
timer.start();
const QString connectionName = QStringLiteral("energylogs_maintenance_%1").arg(QUuid::createUuid().toString(QUuid::WithoutBraces));
{
QSqlDatabase db = QSqlDatabase::addDatabase(QStringLiteral("QSQLITE"), connectionName);
db.setConnectOptions(QStringLiteral("QSQLITE_BUSY_TIMEOUT=5000"));
db.setDatabaseName(dbFilePath);
if (!db.open()) {
qCWarning(dcEnergyExperience()) << "Cannot open energy log DB for maintenance at" << dbFilePath << db.lastError();
} else {
QSqlQuery pragmaQuery(db);
pragmaQuery.exec(QStringLiteral("PRAGMA journal_mode=WAL;"));
pragmaQuery.exec(QStringLiteral("PRAGMA synchronous=NORMAL;"));
if (fillMinuteSamplesUntil.isValid()) {
maintenanceFillMissingMinuteSamples(db, maxMinuteSamples, fillMinuteSamplesUntil);
}
const QList<ThingId> thingIds = maintenanceLoggedThings(db);
foreach (const MaintenanceConfig &cfg, configs) {
if (QThread::currentThread()->isInterruptionRequested()) {
break;
}
QDateTime nextScheduledSample = nextSamples.value(cfg.sampleRate);
if (!nextScheduledSample.isValid()) {
nextScheduledSample = maintenanceNextSampleTimestamp(cfg.sampleRate, QDateTime::currentDateTime());
}
maintenanceRectifySamples(db, cfg.sampleRate, cfg.baseSampleRate, cfg.maxSamples, nextScheduledSample, thingIds);
}
}
db.close();
}
QSqlDatabase::removeDatabase(connectionName);
if (!self) {
return;
}
const qint64 durationMs = timer.elapsed();
QMetaObject::invokeMethod(self, [self, reason, durationMs]() {
if (!self) {
return;
}
qCInfo(dcEnergyExperience()) << "Energy log DB maintenance finished:" << reason << "in" << durationMs << "ms.";
self->m_dbMaintenanceRunning = false;
self->flushPendingDbWrites();
}, Qt::QueuedConnection);
});
m_dbMaintenanceThread = thread;
connect(thread, &QThread::finished, this, [this, thread]() {
if (m_dbMaintenanceThread == thread) {
m_dbMaintenanceThread = nullptr;
}
delete thread;
});
thread->start();
}
void EnergyLogger::flushPendingDbWrites()
{
if (m_dbMaintenanceRunning) {
return;
}
// Remove queued thing logs first to avoid re-inserting data for removed things.
foreach (const ThingId &thingId, m_pendingThingLogRemovals) {
QSqlQuery query(m_db);
query.prepare(QStringLiteral("DELETE FROM thingPower WHERE thingId = ?;"));
query.addBindValue(thingId);
if (!query.exec()) {
qCWarning(dcEnergyExperience()) << "Error removing thing energy logs for thing id" << thingId << query.lastError() << query.executedQuery();
}
query = QSqlQuery(m_db);
query.prepare(QStringLiteral("DELETE FROM thingCache WHERE thingId = ?;"));
query.addBindValue(thingId);
if (!query.exec()) {
qCWarning(dcEnergyExperience()) << "Error removing thing cache entry for thing id" << thingId << query.lastError() << query.executedQuery();
}
}
m_pendingThingLogRemovals.clear();
// Flush cached thing state (deduplicated to latest value per thing).
for (auto it = m_pendingThingCacheEntries.constBegin(); it != m_pendingThingCacheEntries.constEnd(); ++it) {
const ThingId &thingId = it.key();
const QPair<double, double> &totals = it.value();
cacheThingEntry(thingId, totals.first, totals.second);
}
m_pendingThingCacheEntries.clear();
// Flush queued samples.
const int pendingPowerBalanceSamples = m_pendingPowerBalanceSamples.count();
const int pendingThingPowerSamples = m_pendingThingPowerSamples.count();
for (const PendingPowerBalanceSample &sample: m_pendingPowerBalanceSamples) {
insertPowerBalance(sample.timestamp, sample.sampleRate,
sample.consumption, sample.production, sample.acquisition, sample.storage,
sample.totalConsumption, sample.totalProduction, sample.totalAcquisition, sample.totalReturn);
}
m_pendingPowerBalanceSamples.clear();
for (const PendingThingPowerSample &sample: m_pendingThingPowerSamples) {
insertThingPower(sample.timestamp, sample.sampleRate, sample.thingId,
sample.currentPower, sample.totalConsumption, sample.totalProduction);
}
m_pendingThingPowerSamples.clear();
if (pendingPowerBalanceSamples > 0 || pendingThingPowerSamples > 0) {
qCDebug(dcEnergyExperience()) << "Flushed queued samples after DB maintenance. Power balance:" << pendingPowerBalanceSamples << "Thing power:" << pendingThingPowerSamples;
}
}
void EnergyLogger::logPowerBalance(double consumption, double production, double acquisition, double storage, double totalConsumption, double totalProduction, double totalAcquisition, double totalReturn)
{
PowerBalanceLogEntry entry(QDateTime::currentDateTime(), consumption, production, acquisition, storage, totalConsumption, totalProduction, totalAcquisition, totalReturn);
// Add everything to livelog, keep that for one day, in memory only
m_balanceLiveLog.prepend(entry);
while (m_balanceLiveLog.count() > 1 && m_balanceLiveLog.last().timestamp().addDays(1) < QDateTime::currentDateTime()) {
qCDebug(dcEnergyExperience()) << "Discarding livelog entry from" << m_balanceLiveLog.last().timestamp().toString();
m_balanceLiveLog.removeLast();
}
}
void EnergyLogger::logThingPower(const ThingId &thingId, double currentPower, double totalConsumption, double totalProduction)
{
ThingPowerLogEntry entry(QDateTime::currentDateTime(), thingId, currentPower, totalConsumption, totalProduction);
m_thingsPowerLiveLogs[thingId].prepend(entry);
while (m_thingsPowerLiveLogs[thingId].count() > 1 && m_thingsPowerLiveLogs[thingId].last().timestamp().addDays(1) < QDateTime::currentDateTime()) {
qCDebug(dcEnergyExperience()) << "Discarding thing power livelog entry for thing" << thingId << "from" << m_thingsPowerLiveLogs[thingId].last().timestamp().toString();
m_thingsPowerLiveLogs[thingId].removeLast();
}
}
PowerBalanceLogEntries EnergyLogger::powerBalanceLogs(SampleRate sampleRate, const QDateTime &from, const QDateTime &to) const
{
PowerBalanceLogEntries result;
QSqlQuery query(m_db);
QString queryString = "SELECT * FROM powerBalance WHERE sampleRate = ?";
QVariantList bindValues;
bindValues << sampleRate;
qCDebug(dcEnergyExperience()) << "Fetching logs. Timestamp:" << from << from.isNull();
if (!from.isNull()) {
queryString += " AND timestamp >= ?";
bindValues << from.toMSecsSinceEpoch();
}
if (!to.isNull()) {
queryString += " AND timestamp <= ?";
bindValues << to.toMSecsSinceEpoch();
}
queryString += " ORDER BY timestamp ASC";
query.prepare(queryString);
foreach (const QVariant &bindValue, bindValues) {
query.addBindValue(bindValue);
}
qCDebug(dcEnergyExperience()) << "Executing" << queryString << bindValues;
query.exec();
if (query.lastError().isValid()) {
qCWarning(dcEnergyExperience()) << "Error fetching power balance logs:" << query.lastError() << query.executedQuery();
return result;
}
while (query.next()) {
// qCDebug(dcEnergyExperience()) << "Adding result";
result.append(queryResultToBalanceLogEntry(query.record()));
}
return result;
}
ThingPowerLogEntries EnergyLogger::thingPowerLogs(SampleRate sampleRate, const QList<ThingId> &thingIds, const QDateTime &from, const QDateTime &to) const
{
ThingPowerLogEntries result;
QSqlQuery query(m_db);
QString queryString = "SELECT * FROM thingPower WHERE sampleRate = ?";
QVariantList bindValues;
bindValues << sampleRate;
qCDebug(dcEnergyExperience()) << "Fetching thing power logs for" << thingIds;
QStringList thingsQuery;
foreach (const ThingId &thingId, thingIds) {
thingsQuery.append("thingId = ?");
bindValues << thingId;
}
if (!thingsQuery.isEmpty()) {
queryString += " AND (" + thingsQuery.join(" OR ") + " )";
}
if (!from.isNull()) {
queryString += " AND timestamp >= ?";
bindValues << from.toMSecsSinceEpoch();
}
if (!to.isNull()) {
queryString += " AND timestamp <= ?";
bindValues << to.toMSecsSinceEpoch();
}
queryString += " ORDER BY timestamp ASC";
query.prepare(queryString);
foreach (const QVariant &bindValue, bindValues) {
query.addBindValue(bindValue);
}
query.exec();
if (query.lastError().isValid()) {
qCWarning(dcEnergyExperience()) << "Error fetching thing power logs:" << query.lastError() << query.executedQuery();
return result;
}
while (query.next()) {
result.append(ThingPowerLogEntry(
QDateTime::fromMSecsSinceEpoch(query.value("timestamp").toLongLong()),
query.value("thingId").toUuid(),
query.value("currentPower").toDouble(),
query.value("totalConsumption").toDouble(),
query.value("totalProduction").toDouble()));
}
return result;
}
PowerBalanceLogEntry EnergyLogger::latestLogEntry(SampleRate sampleRate)
{
if (sampleRate == SampleRateAny) {
if (m_balanceLiveLog.count() > 0) {
return m_balanceLiveLog.first();
}
}
QSqlQuery query(m_db);
QString queryString = "SELECT * FROM powerBalance";
QVariantList bindValues;
if (sampleRate != SampleRateAny) {
queryString += " WHERE sampleRate = ?";
bindValues.append(sampleRate);
}
queryString += " ORDER BY timestamp DESC";
if (sampleRate == SampleRateAny) {
queryString += ", sampleRate ASC";
}
queryString += " LIMIT 1;";
query.prepare(queryString);
foreach (const QVariant &value, bindValues) {
query.addBindValue(value);
}
if (!query.exec()) {
qCWarning(dcEnergyExperience()) << "Error obtaining latest log entry from DB:" << query.lastError() << query.executedQuery();
return PowerBalanceLogEntry();
}
if (!query.next()) {
qCDebug(dcEnergyExperience()) << "No power balance log entry in DB for sample rate:" << sampleRate;
return PowerBalanceLogEntry();
}
return queryResultToBalanceLogEntry(query.record());
}
ThingPowerLogEntry EnergyLogger::latestLogEntry(SampleRate sampleRate, const ThingId &thingId)
{
if (sampleRate == SampleRateAny) {
if (m_thingsPowerLiveLogs.value(thingId).count() > 0) {
return m_thingsPowerLiveLogs.value(thingId).first();
}
}
QSqlQuery query(m_db);
QString queryString = "SELECT * FROM thingPower WHERE thingId = ?";
QVariantList bindValues;
bindValues << thingId;
if (sampleRate != SampleRateAny) {
queryString += " AND sampleRate = ?";
bindValues << sampleRate;
}
queryString += " ORDER BY timestamp DESC";
if (sampleRate == SampleRateAny) {
queryString += ", sampleRate ASC";
}
queryString += " LIMIT 1;";
query.prepare(queryString);
foreach (const QVariant &bindValue, bindValues) {
query.addBindValue(bindValue);
}
if (!query.exec()) {
qCWarning(dcEnergyExperience()) << "Error fetching latest thing log entry from DB:" << query.lastError() << query.executedQuery();
return ThingPowerLogEntry();
}
if (!query.next()) {
qCDebug(dcEnergyExperience()) << "No thing power log entry in DB for sample rate:" << sampleRate << "thingId:" << thingId;
return ThingPowerLogEntry();
}
return queryResultToThingPowerLogEntry(query.record());
}
void EnergyLogger::removeThingLogs(const ThingId &thingId)
{
m_thingsPowerLiveLogs.remove(thingId);
if (m_dbMaintenanceRunning) {
m_pendingThingLogRemovals.insert(thingId);
m_pendingThingCacheEntries.remove(thingId);
// Drop any queued samples for this thing.
for (int i = m_pendingThingPowerSamples.count() - 1; i >= 0; i--) {
if (m_pendingThingPowerSamples.at(i).thingId == thingId) {
m_pendingThingPowerSamples.removeAt(i);
}
}
return;
}
QSqlQuery query(m_db);
query.prepare("DELETE FROM thingPower WHERE thingId = ?;");
query.addBindValue(thingId);
query.exec();
if (query.lastError().isValid()) {
qCWarning(dcEnergyExperience()) << "Error removing thing energy logs for thing id" << thingId << query.lastError() << query.executedQuery();
}
query = QSqlQuery(m_db);
query.prepare("DELETE FROM thingCache WHERE thingId = ?;");
query.addBindValue(thingId);
query.exec();
if (query.lastError().isValid()) {
qCWarning(dcEnergyExperience()) << "Error removing thing cache entry for thing id" << thingId << query.lastError() << query.executedQuery();
}
}
QList<ThingId> EnergyLogger::loggedThings() const
{
QList<ThingId> ret;
QSqlQuery query(m_db);
query.prepare("SELECT DISTINCT thingId FROM thingPower;");
query.exec();
if (query.lastError().isValid()) {
qCWarning(dcEnergyExperience()) << "Failed to load existing things from logs:" << query.lastError();
} else {
while (query.next()) {
ret.append(query.value("thingId").toUuid());
}
}
return ret;
}
void EnergyLogger::cacheThingEntry(const ThingId &thingId, double totalEnergyConsumed, double totalEnergyProduced)
{
if (m_dbMaintenanceRunning) {
m_pendingThingCacheEntries.insert(thingId, {totalEnergyConsumed, totalEnergyProduced});
return;
}
QSqlQuery query(m_db);
query.prepare("INSERT OR REPLACE INTO thingCache (thingId, totalEnergyConsumed, totalEnergyProduced) VALUES (?, ?, ?);");
query.addBindValue(thingId);
query.addBindValue(totalEnergyConsumed);
query.addBindValue(totalEnergyProduced);
query.exec();
if (query.lastError().isValid()) {
qCWarning(dcEnergyExperience()) << "Failed to store thing cache entry:" << query.lastError() << query.executedQuery();
}
}
ThingPowerLogEntry EnergyLogger::cachedThingEntry(const ThingId &thingId)
{
QSqlQuery query(m_db);
query.prepare("SELECT * FROM thingCache WHERE thingId = ?;");
query.addBindValue(thingId);
query.exec();
if (query.lastError().isValid()) {
qCWarning(dcEnergyExperience()) << "Failed to retrieve thing cache entry:" << query.lastError() << query.executedQuery();
return ThingPowerLogEntry();
}
if (!query.next()) {
qCDebug(dcEnergyExperience()) << "No cached thing entry for" << thingId;
return ThingPowerLogEntry();
}
return ThingPowerLogEntry(QDateTime(), thingId, 0, query.value("totalEnergyConsumed").toDouble(), query.value("totalEnergyProduced").toDouble());
}
void EnergyLogger::sample()
{
QDateTime now = QDateTime::currentDateTime();
bool deferDbWrites = m_dbMaintenanceRunning;
if (now >= m_nextSamples.value(SampleRate1Min)) {
QDateTime sampleEnd = m_nextSamples.value(SampleRate1Min);
QDateTime sampleStart = sampleEnd.addMSecs(-60 * 1000);
if (!deferDbWrites) {
PowerBalanceLogEntry newestInDB = latestLogEntry(SampleRate1Min);
qCDebug(dcEnergyExperience()) << "Sampling power balance for 1 min from" << sampleStart.toString() << sampleEnd.toString() << "newest in DB:" << newestInDB.timestamp().toString();
if (newestInDB.timestamp().isValid() && newestInDB.timestamp() < sampleStart) {
qCWarning(dcEnergyExperience()).nospace() << "Clock skew detected. Scheduling background recovery job.";
startDbMaintenance("clock skew recovery", sampleStart);
deferDbWrites = true;
}
}
double medianConsumption = 0;
double medianProduction = 0;
double medianAcquisition = 0;
double medianStorage = 0;
for (int i = 0; i < m_balanceLiveLog.count(); i++) {
const PowerBalanceLogEntry &entry = m_balanceLiveLog.at(i);
QDateTime frameStart = entry.timestamp();
if (frameStart < sampleStart) {
frameStart = sampleStart;
} else if (frameStart > sampleEnd) {
frameStart = sampleEnd;
}
QDateTime frameEnd = i == 0 ? sampleEnd : m_balanceLiveLog.at(i-1).timestamp();
if (frameEnd < sampleStart) {
frameEnd = sampleStart;
} else if (frameEnd > sampleEnd) {
frameEnd = sampleEnd;
}
qint64 frameDuration = frameStart.msecsTo(frameEnd);
if (frameDuration < 0) {
frameDuration = 0;
}
qCDebug(dcEnergyExperience()) << "Frame" << i << "duration:" << frameDuration << "value:" << entry.consumption() << "start" << frameStart.toString() << "end" << frameEnd.toString();
medianConsumption += entry.consumption() * frameDuration;
medianProduction += entry.production() * frameDuration;
medianAcquisition += entry.acquisition() * frameDuration;
medianStorage += entry.storage() * frameDuration;
if (entry.timestamp() < sampleStart) {
break;
}
}
medianConsumption /= sampleStart.msecsTo(sampleEnd);
medianProduction /= sampleStart.msecsTo(sampleEnd);
medianAcquisition /= sampleStart.msecsTo(sampleEnd);
medianStorage /= sampleStart.msecsTo(sampleEnd);
PowerBalanceLogEntry newest = latestLogEntry(SampleRateAny);
double totalConsumption = newest.totalConsumption();
double totalProduction = newest.totalProduction();
double totalAcquisition = newest.totalAcquisition();
double totalReturn = newest.totalReturn();
qCDebug(dcEnergyExperience()) << "Sampled power balance:" << SampleRate1Min << "🔥:" << medianConsumption << "🌞:" << medianProduction << "💵:" << medianAcquisition << "🔋:" << medianStorage << "Totals:" << "🔥:" << totalConsumption << "🌞:" << totalProduction << "💵↓:" << totalAcquisition << "💵↑:" << totalReturn;
insertPowerBalance(sampleEnd, SampleRate1Min, medianConsumption, medianProduction, medianAcquisition, medianStorage, totalConsumption, totalProduction, totalAcquisition, totalReturn);
foreach (const ThingId &thingId, m_thingsPowerLiveLogs.keys()) {
if (!deferDbWrites) {
ThingPowerLogEntry newestInDB = latestLogEntry(SampleRate1Min, thingId);
qCDebug(dcEnergyExperience()) << "Sampling thing power for" << thingId.toString() << SampleRate1Min << "from" << sampleStart.toString() << "to" << sampleEnd.toString() << "newest in DB" << newestInDB.timestamp().toString();
if (newestInDB.timestamp().isValid() && newestInDB.timestamp() < sampleStart) {
qCWarning(dcEnergyExperience()).nospace() << "Clock skew detected for thing power logs. Scheduling background recovery job.";
startDbMaintenance("clock skew recovery", sampleStart);
deferDbWrites = true;
}
}
double medianPower = 0;
ThingPowerLogEntries entries = m_thingsPowerLiveLogs.value(thingId);
for (int i = 0; i < entries.count(); i++) {
const ThingPowerLogEntry &entry = entries.at(i);
QDateTime frameStart = entry.timestamp();
if (frameStart < sampleStart) {
frameStart = sampleStart;
} else if (frameStart > sampleEnd) {
frameStart = sampleEnd;
}
QDateTime frameEnd = i == 0 ? sampleEnd : entries.at(i-1).timestamp();
if (frameEnd < sampleStart) {
frameEnd = sampleStart;
} else if (frameEnd > sampleEnd) {
frameEnd = sampleEnd;
}
qint64 frameDuration = frameStart.msecsTo(frameEnd);
if (frameDuration < 0) {
frameDuration = 0;
}
qCDebug(dcEnergyExperience()) << "Frame" << i << "duration:" << frameDuration << "value:" << entry.currentPower();
medianPower += entry.currentPower() * frameDuration;
if (entry.timestamp() < sampleStart) {
break;
}
}
medianPower /= sampleStart.msecsTo(sampleEnd);
ThingPowerLogEntry newest = latestLogEntry(SampleRateAny, thingId);
double totalConsumption = newest.totalConsumption();
double totalProduction = newest.totalProduction();
qCDebug(dcEnergyExperience()) << "Sampled thing power for" << thingId << SampleRate1Min << "🔥/🌞:" << medianPower << "Totals:" << "🔥:" << totalConsumption << "🌞:" << totalProduction;
insertThingPower(sampleEnd, SampleRate1Min, thingId, medianPower, totalConsumption, totalProduction);
}
}
// A background maintenance job (resampling / gap filling) is running.
// Keep 1-minute sampling going (in-memory) but do not touch the DB for lower sample rates or housekeeping.
if (deferDbWrites) {
if (now > m_nextSamples.value(SampleRate1Min)) {
scheduleNextSample(SampleRate1Min);
}
return;
}
// First sample all the configs.
foreach (SampleRate sampleRate, m_configs.keys()) {
if (now >= m_nextSamples.value(sampleRate)) {
QDateTime sampleTime = m_nextSamples.value(sampleRate);
SampleRate baseSampleRate = m_configs.value(sampleRate).baseSampleRate;
QDateTime sampleStart = calculateSampleStart(sampleTime, sampleRate);
QDateTime newestInDB = getNewestPowerBalanceSampleTimestamp(sampleRate);
if (newestInDB.isValid() && newestInDB < sampleStart) {
qCWarning(dcEnergyExperience()) << "Clock skew detected. Scheduling background recovery job.";
startDbMaintenance("clock skew recovery");
if (now >= m_nextSamples.value(SampleRate1Min)) {
scheduleNextSample(SampleRate1Min);
}
foreach (SampleRate rate, m_configs.keys()) {
if (now >= m_nextSamples.value(rate)) {
scheduleNextSample(rate);
}
}
return;
}
samplePowerBalance(sampleRate, baseSampleRate, sampleTime);
sampleThingsPower(sampleRate, baseSampleRate, sampleTime);
}
}
// and then trim them
if (now > m_nextSamples.value(SampleRate1Min)) {
QDateTime sampleTime = m_nextSamples.value(SampleRate1Min);
QDateTime oldestTimestamp = sampleTime.addMSecs(-(qint64)m_maxMinuteSamples * 60 * 1000);
trimPowerBalance(SampleRate1Min, oldestTimestamp);
foreach (const ThingId &thingId, m_thingsPowerLiveLogs.keys()) {
trimThingPower(thingId, SampleRate1Min, oldestTimestamp);
}
}
foreach (SampleRate sampleRate, m_configs.keys()) {
if (now >= m_nextSamples.value(sampleRate)) {
uint maxSamples = m_configs.value(sampleRate).maxSamples;
QDateTime sampleTime = m_nextSamples.value(sampleRate);
QDateTime oldestTimestamp = calculateSampleStart(sampleTime, sampleRate, maxSamples);
trimPowerBalance(sampleRate, oldestTimestamp);
foreach (const ThingId &thingId, m_thingsPowerLiveLogs.keys()) {
trimThingPower(thingId, sampleRate, oldestTimestamp);
}
}
}
// Lastly we reschedule the next sample for each config
// Note: keep this at the end as the previous stuff uses the schedule to work
if (now > m_nextSamples.value(SampleRate1Min)) {
scheduleNextSample(SampleRate1Min);
}
foreach (SampleRate sampleRate, m_configs.keys()) {
if (now >= m_nextSamples.value(sampleRate)) {
scheduleNextSample(sampleRate);
}
}
}
bool EnergyLogger::initDB()
{
m_db.close();
m_db = QSqlDatabase::addDatabase(QStringLiteral("QSQLITE"), "energylogs");
m_db.setConnectOptions(QStringLiteral("QSQLITE_BUSY_TIMEOUT=5000"));
QDir path = QDir(NymeaSettings::storagePath());
if (!path.exists())
path.mkpath(path.path());
m_dbFilePath = path.filePath("energylogs.sqlite");
m_db.setDatabaseName(m_dbFilePath);
if (!m_db.isValid()) {
qCWarning(dcEnergyExperience()) << "The energy database is not valid" << m_db.databaseName();
return false;
}
qCDebug(dcEnergyExperience()) << "Opening energy database" << m_db.databaseName();
if (!m_db.open()) {
qCWarning(dcEnergyExperience()) << "Cannot open energy log DB at" << m_db.databaseName() << m_db.lastError();
return false;
}
// Improve concurrency between readers (main thread) and the background maintenance job.
// NOTE: journal_mode is persisted per database, running this is cheap.
QSqlQuery pragmaQuery(m_db);
pragmaQuery.exec(QStringLiteral("PRAGMA journal_mode=WAL;"));
pragmaQuery.exec(QStringLiteral("PRAGMA synchronous=NORMAL;"));
if (!m_db.tables().contains("metadata")) {
qCDebug(dcEnergyExperience()) << "No \"metadata\" table in database. Creating it.";
QString queryString = "CREATE TABLE IF NOT EXISTS metadata (version INT);";
QSqlQuery createTableMetadataVersionQuery(queryString, m_db);
if (!createTableMetadataVersionQuery.exec()) {
qCWarning(dcEnergyExperience()) << "Error creating metadata table in energy log database. Query:" << queryString << createTableMetadataVersionQuery.lastError().text() << "Driver error:" << m_db.lastError().driverText() << "Database error:" << m_db.lastError().databaseText();
return false;
}
queryString = "INSERT INTO metadata (version) VALUES (1);";
QSqlQuery writeVersionQuery(queryString, m_db);
if (!writeVersionQuery.exec()) {
qCWarning(dcEnergyExperience()) << "Error writing metadata table in energy log database. Query:" << queryString << writeVersionQuery.lastError().text() << "Driver error:" << m_db.lastError().driverText() << "Database error:" << m_db.lastError().databaseText();
return false;
}
}
if (!m_db.tables().contains("powerBalance")) {
qCDebug(dcEnergyExperience()) << "No \"powerBalance\" table in database. Creating it.";
QString query("CREATE TABLE IF NOT EXISTS powerBalance "
"("
"timestamp BIGINT,"
"sampleRate INT,"
"consumption FLOAT,"
"production FLOAT,"
"acquisition FLOAT,"
"storage FLOAT,"
"totalConsumption FLOAT,"
"totalProduction FLOAT,"
"totalAcquisition FLOAT,"
"totalReturn FLOAT"
");");
QSqlQuery createTableQuery(query, m_db);
if (!createTableQuery.exec()) {
qCWarning(dcEnergyExperience()) << "Error creating powerBalance table in energy log database." << query << createTableQuery.lastError().text() << "Driver error:" << m_db.lastError().driverText() << "Database error:" << m_db.lastError().databaseText();
return false;
}
}
QSqlQuery createPowerBalanceIndexQuery("CREATE INDEX IF NOT EXISTS idx_powerBalance ON powerBalance(sampleRate, timestamp);", m_db);
if (!createPowerBalanceIndexQuery.exec()) {
qCWarning(dcEnergyExperience()) << "Error creating powerBalance table index in energy log database. Query:" << createPowerBalanceIndexQuery.lastQuery() << createPowerBalanceIndexQuery.lastError().text() << "Driver error:" << m_db.lastError().driverText() << "Database error:" << m_db.lastError().databaseText();
return false;
}
if (!m_db.tables().contains("thingPower")) {
qCDebug(dcEnergyExperience()) << "No \"thingPower\" table in database. Creating it.";
QString query("CREATE TABLE IF NOT EXISTS thingPower "
"("
"timestamp BIGINT,"
"sampleRate INT,"
"thingId VARCHAR(38),"
"currentPower FLOAT,"
"totalConsumption FLOAT,"
"totalProduction FLOAT"
");");
QSqlQuery createThingPowerTableQuery(query, m_db);
if (!createThingPowerTableQuery.exec()) {
qCWarning(dcEnergyExperience()) << "Error creating thingPower table in energy log database. Query:" << query << createThingPowerTableQuery.lastError().text() << "Driver error:" << m_db.lastError().driverText() << "Database error:" << m_db.lastError().databaseText();
return false;
}
}
QSqlQuery createThingPowerIndexQuery("CREATE INDEX IF NOT EXISTS idx_thingPower ON thingPower(thingId, sampleRate, timestamp);", m_db);
if (!createThingPowerIndexQuery.exec()) {
qCWarning(dcEnergyExperience()) << "Error creating thingPower table index in energy log database. Query:" << createThingPowerIndexQuery.lastQuery() << createThingPowerIndexQuery.lastError().text() << "Driver error:" << m_db.lastError().driverText() << "Database error:" << m_db.lastError().databaseText();
return false;
}
if (!m_db.tables().contains("thingCache")) {
qCDebug(dcEnergyExperience()) << "No \"thingCache\" table in database. Creating it.";
QString query("CREATE TABLE IF NOT EXISTS thingCache "
"("
"thingId VARCHAR(38) PRIMARY KEY,"
"totalEnergyConsumed FLOAT,"
"totalEnergyProduced FLOAT"
");");
QSqlQuery createThingCacheTableQuery(query, m_db);
if (!createThingCacheTableQuery.exec()) {
qCWarning(dcEnergyExperience()) << "Error creating thingCache table in energy log database. Query:" << query << createThingCacheTableQuery.lastError().text() << "Driver error:" << m_db.lastError().driverText() << "Database error:" << m_db.lastError().databaseText();
return false;
}
}
qCDebug(dcEnergyExperience()) << "Initialized logging DB successfully." << m_db.databaseName();
return true;
}
void EnergyLogger::addConfig(SampleRate sampleRate, SampleRate baseSampleRate, int maxSamples)
{
SampleConfig config;
config.baseSampleRate = baseSampleRate;
config.maxSamples = maxSamples;
m_configs.insert(sampleRate, config);
}
QDateTime EnergyLogger::getOldestPowerBalanceSampleTimestamp(SampleRate sampleRate)
{
QSqlQuery query(m_db);
query.prepare("SELECT MIN(timestamp) AS oldestTimestamp FROM powerBalance WHERE sampleRate = ?;");
query.addBindValue(sampleRate);
query.exec();
if (query.next() && !query.value("oldestTimestamp").isNull()) {
return QDateTime::fromMSecsSinceEpoch(query.value("oldestTimestamp").toLongLong());
}
return QDateTime();
}
QDateTime EnergyLogger::getNewestPowerBalanceSampleTimestamp(SampleRate sampleRate)
{
QSqlQuery query(m_db);
query.prepare("SELECT MAX(timestamp) AS latestTimestamp FROM powerBalance WHERE sampleRate = ?;");
query.addBindValue(sampleRate);
query.exec();
if (query.next() && !query.value("latestTimestamp").isNull()) {
return QDateTime::fromMSecsSinceEpoch(query.value("latestTimestamp").toLongLong());
}
return QDateTime();
}
QDateTime EnergyLogger::getOldestThingPowerSampleTimestamp(const ThingId &thingId, SampleRate sampleRate)
{
QSqlQuery query(m_db);
query.prepare("SELECT MIN(timestamp) AS oldestTimestamp FROM thingPower WHERE thingId = ? AND sampleRate = ?;");
query.addBindValue(thingId);
query.addBindValue(sampleRate);
query.exec();
if (query.next() && !query.value("oldestTimestamp").isNull()) {
return QDateTime::fromMSecsSinceEpoch(query.value("oldestTimestamp").toLongLong());
}
return QDateTime();
}
QDateTime EnergyLogger::getNewestThingPowerSampleTimestamp(const ThingId &thingId, SampleRate sampleRate)
{
QSqlQuery query(m_db);
query.prepare("SELECT MAX(timestamp) AS newestTimestamp FROM thingPower WHERE thingId = ? AND sampleRate = ?;");
query.addBindValue(thingId);
query.addBindValue(sampleRate);
query.exec();
if (query.next() && !query.value("newestTimestamp").isNull()) {
return QDateTime::fromMSecsSinceEpoch(query.value("newestTimestamp").toLongLong());
}
return QDateTime();
}
void EnergyLogger::scheduleNextSample(SampleRate sampleRate)
{
// Advance relative to the previously scheduled sample to avoid skipping samples when we're behind.
// If we don't have a schedule yet, align based on "now".
QDateTime base = m_nextSamples.value(sampleRate);
if (!base.isValid()) {
base = QDateTime::currentDateTime();
} else {
base = base.addMSecs(1000);
}
QDateTime next = nextSampleTimestamp(sampleRate, base);
m_nextSamples.insert(sampleRate, next);
qCDebug(dcEnergyExperience()) << "Next sample for" << sampleRate << "scheduled at" << next.toString();
}
QDateTime EnergyLogger::calculateSampleStart(const QDateTime &sampleEnd, SampleRate sampleRate, int sampleCount)
{
if (sampleRate == SampleRate1Month) {
return sampleEnd.addMonths(-sampleCount);
} else if (sampleRate == SampleRate1Year) {
return sampleEnd.addYears(-sampleCount);
}
return sampleEnd.addMSecs(-(quint64)sampleCount * sampleRate * 60 * 1000);
}
void EnergyLogger::rectifySamples(SampleRate sampleRate, SampleRate baseSampleRate)
{
// Normally we'd need to find the newest available sample of a series and catch up from there.
// However, it could happen a series does not have any samples at all yet. For example if we're logging since january,
// and at new years the system was off, we missed the new years yearly sample and don't have any earlier. For those cases
// we need to start resampling from the oldest timestamp we find in the DB for the base sampleRate.
QDateTime oldestBaseSample = getOldestPowerBalanceSampleTimestamp(baseSampleRate);
QDateTime newestSample = getNewestPowerBalanceSampleTimestamp(sampleRate);
QDateTime startTime = QDateTime::currentDateTime();
qCDebug(dcEnergyExperience()) << "Checking for missing power balance samples for" << sampleRate;
qCDebug(dcEnergyExperience()) << "Newest sample:" << newestSample.toString() << "Oldest base sample:" << oldestBaseSample.toString();
if (newestSample.isNull()) {
qCDebug(dcEnergyExperience()) << "No sample at all so far. Using base as starting point.";
newestSample = oldestBaseSample;
}
// qCDebug(dcEnergyExperience()) << "next sample after last in series:" << nextSampleTimestamp(sampleRate, newestSample).toString();
// qCDebug(dcEnergyExperience()) << "next scheduled sample:" << m_nextSamples.value(sampleRate).toString();
if (!newestSample.isNull() && nextSampleTimestamp(sampleRate, newestSample) < m_nextSamples[sampleRate]) {
// regularly sample one sample as there may be some valid samples in the base series
QDateTime nextSample = nextSampleTimestamp(sampleRate, newestSample.addMSecs(1000));
samplePowerBalance(sampleRate, baseSampleRate, nextSample);
newestSample = nextSample;
}
// Now retrieve the last sample and just carry over totals
PowerBalanceLogEntry latest = latestLogEntry(sampleRate);
// We only need to rectify up to maxSamples, so don't bother with older ones
if (!newestSample.isNull()) {
newestSample = qMax(newestSample, calculateSampleStart(m_nextSamples[sampleRate], sampleRate, m_configs.value(sampleRate).maxSamples));
}
m_db.transaction();
int count = 0;
while (!newestSample.isNull() && nextSampleTimestamp(sampleRate, newestSample) < m_nextSamples[sampleRate]) {
QDateTime nextSample = nextSampleTimestamp(sampleRate, newestSample.addMSecs(1000));
insertPowerBalance(nextSample, sampleRate, 0, 0, 0, 0, latest.totalConsumption(), latest.totalProduction(), latest.totalAcquisition(), latest.totalReturn());
newestSample = nextSample;
count++;
}
m_db.commit();
qCDebug(dcEnergyExperience()) << "Done rectifying" << count << "power balance samples for" << sampleRate << "in" << startTime.msecsTo(QDateTime::currentDateTime()) << "ms";
foreach (const ThingId &thingId, m_thingsPowerLiveLogs.keys()) {
QDateTime oldestBaseSample = getOldestThingPowerSampleTimestamp(thingId, baseSampleRate);
QDateTime newestSample = getNewestThingPowerSampleTimestamp(thingId, sampleRate);
QDateTime startTime = QDateTime::currentDateTime();
qCDebug(dcEnergyExperience()) << "Checking for missing thing samples for" << sampleRate << "for thing" << thingId;
qCDebug(dcEnergyExperience()) << "Newest sample:" << newestSample.toString() << "Oldest base sample:" << oldestBaseSample.toString();
if (newestSample.isNull()) {
qCDebug(dcEnergyExperience()) << "No sample at all so far. Using base as starting point.";
if (oldestBaseSample.isNull()) {
qCDebug(dcEnergyExperience()) << "Base series doesn't have any samples either. Skipping resampling for" << sampleRate << "for" << thingId;
continue;
}
newestSample = oldestBaseSample;
}
// qCDebug(dcEnergyExperience()) << "T next sample after last in series:" << nextSampleTimestamp(sampleRate, newestSample).toString();
// qCDebug(dcEnergyExperience()) << "T next scheduled sample:" << m_nextSamples.value(sampleRate).toString();
if (!newestSample.isNull() && nextSampleTimestamp(sampleRate, newestSample) < m_nextSamples[sampleRate]) {
QDateTime nextSample = nextSampleTimestamp(sampleRate, newestSample.addMSecs(1000));
sampleThingPower(thingId, sampleRate, baseSampleRate, nextSample);
newestSample = nextSample;
}
// Now retrieve the last sample and just carry over totals
ThingPowerLogEntry latest = latestLogEntry(sampleRate, thingId);
// We only need to rectify up to maxSamples, so don't bother with older ones
newestSample = qMax(newestSample, calculateSampleStart(m_nextSamples[sampleRate], sampleRate, m_configs.value(sampleRate).maxSamples));
m_db.transaction();
int count = 0;
while (!newestSample.isNull() && nextSampleTimestamp(sampleRate, newestSample) < m_nextSamples[sampleRate]) {
QDateTime nextSample = nextSampleTimestamp(sampleRate, newestSample.addMSecs(1000));
insertThingPower(nextSample, sampleRate, thingId, 0, latest.totalConsumption(), latest.totalProduction());
newestSample = nextSample;
count++;
}
m_db.commit();
qCDebug(dcEnergyExperience()) << "Done rectifying" << count << "thing power samples for" << sampleRate << " for" << thingId << "in" << startTime.msecsTo(QDateTime::currentDateTime()) << "ms";
}
}
QDateTime EnergyLogger::nextSampleTimestamp(SampleRate sampleRate, const QDateTime &dateTime)
{
QTime time = dateTime.time();
QDate date = dateTime.date();
QDateTime next;
switch (sampleRate) {
case SampleRateAny:
qCWarning(dcEnergyExperience()) << "Cannot calculate next sample timestamp without a sample rate";
return QDateTime();
case SampleRate1Min:
time.setHMS(time.hour(), time.minute(), 0);
next = QDateTime(date, time).addMSecs(60 * 1000);
break;
case SampleRate15Mins:
time.setHMS(time.hour(), time.minute() - (time.minute() % 15), 0);
next = QDateTime(date, time).addMSecs(15 * 60 * 1000);
break;
case SampleRate1Hour:
time.setHMS(time.hour(), 0, 0);
next = QDateTime(date, time).addMSecs(60 * 60 * 1000);
break;
case SampleRate3Hours:
time.setHMS(time.hour() - (time.hour() % 3), 0, 0);
next = QDateTime(date, time).addMSecs(3 * 60 * 60 * 1000);
if (next.time().hour() == 2) {
qCDebug(dcEnergyExperience()) << "DST switch detected!";
next = next.addMSecs(60 * 60 * 1000);
}
break;
case SampleRate1Day:
next = QDateTime(date, QTime()).addDays(1);
break;
case SampleRate1Week:
date = date.addDays(-date.dayOfWeek() + 1);
next = QDateTime(date, QTime()).addDays(7);
break;
case SampleRate1Month:
date = date.addDays(-date.day() + 1);
next = QDateTime(date, QTime()).addMonths(1);
break;
case SampleRate1Year:
date.setDate(date.year(), 1, 1);
next = QDateTime(date, QTime()).addYears(1);
break;
}
return next;
}
bool EnergyLogger::samplePowerBalance(SampleRate sampleRate, SampleRate baseSampleRate, const QDateTime &sampleEnd)
{
QDateTime sampleStart = calculateSampleStart(sampleEnd, sampleRate);
qCDebug(dcEnergyExperience()) << "Sampling power balance" << sampleRate << "from" << sampleStart << "to" << sampleEnd;
double medianConsumption = 0;
double medianProduction = 0;
double medianAcquisition = 0;
double medianStorage = 0;
double totalConsumption = 0;
double totalProduction = 0;
double totalAcquisition = 0;
double totalReturn = 0;
QSqlQuery query(m_db);
query.prepare("SELECT * FROM powerBalance WHERE sampleRate = ? AND timestamp > ? AND timestamp <= ? ORDER BY timestamp ASC;");
query.addBindValue(baseSampleRate);
query.addBindValue(sampleStart.toMSecsSinceEpoch());
query.addBindValue(sampleEnd.toMSecsSinceEpoch());
query.exec();
if (query.lastError().isValid()) {
qCWarning(dcEnergyExperience()) << "Error fetching power balance samples for" << baseSampleRate << "from" << sampleStart.toString() << "to" << sampleEnd.toString();
qCWarning(dcEnergyExperience()) << "SQL error was:" << query.lastError() << "executed query:" << query.executedQuery();
return false;
}
int resultCount = 0;
while (query.next()) {
resultCount++;
qCDebug(dcEnergyExperience()) << "Frame:" << QDateTime::fromMSecsSinceEpoch(query.value("timestamp").toLongLong()).toString() << query.value("consumption").toDouble() << query.value("production").toDouble() << query.value("acquisition").toDouble() << query.value("storage").toDouble() << query.value("totalConsumption").toDouble() << query.value("totalProduction").toDouble() << query.value("totalAcquisition").toDouble() << query.value("totalReturn").toDouble();
medianConsumption += query.value("consumption").toDouble();
medianProduction += query.value("production").toDouble();
medianAcquisition += query.value("acquisition").toDouble();
medianStorage += query.value("storage").toDouble();
totalConsumption = query.value("totalConsumption").toDouble();
totalProduction = query.value("totalProduction").toDouble();
totalAcquisition = query.value("totalAcquisition").toDouble();
totalReturn = query.value("totalReturn").toDouble();
}
if (resultCount > 0) {
medianConsumption = medianConsumption * baseSampleRate / sampleRate;
medianProduction = medianProduction * baseSampleRate / sampleRate;
medianAcquisition = medianAcquisition * baseSampleRate / sampleRate;
medianStorage = medianStorage * baseSampleRate / sampleRate;
} else {
// If there are no base samples for the given time frame at all, let's try to find the last existing one in the base
// to at least copy the totals from where we left off.
query = QSqlQuery(m_db);
query.prepare("SELECT * FROM powerBalance WHERE sampleRate = ? ORDER BY timestamp DESC LIMIT 1;");
query.addBindValue(baseSampleRate);
query.exec();
if (query.lastError().isValid()) {
qCWarning(dcEnergyExperience()) << "Error fetching newest power balance sample for" << baseSampleRate;
qCWarning(dcEnergyExperience()) << "SQL error was:" << query.lastError() << "executed query:" << query.executedQuery();
return false;
}
if (query.next()) {
totalConsumption = query.value("totalConsumption").toDouble();
totalProduction = query.value("totalProduction").toDouble();
totalAcquisition = query.value("totalAcquisition").toDouble();
totalReturn = query.value("totalReturn").toDouble();
}
}
qCDebug(dcEnergyExperience()) << "Sampled:" << "🔥:" << medianConsumption << "🌞:" << medianProduction << "💵:" << medianAcquisition << "🔋:" << medianStorage << "Totals:" << "🔥:" << totalConsumption << "🌞:" << totalProduction << "💵↓:" << totalAcquisition << "💵↑:" << totalReturn;
return insertPowerBalance(sampleEnd, sampleRate, medianConsumption, medianProduction, medianAcquisition, medianStorage, totalConsumption, totalProduction, totalAcquisition, totalReturn);
}
bool EnergyLogger::insertPowerBalance(const QDateTime &timestamp, SampleRate sampleRate, double consumption, double production, double acquisition, double storage, double totalConsumption, double totalProduction, double totalAcquisition, double totalReturn)
{
if (m_dbMaintenanceRunning) {
PendingPowerBalanceSample pending;
pending.timestamp = timestamp;
pending.sampleRate = sampleRate;
pending.consumption = consumption;
pending.production = production;
pending.acquisition = acquisition;
pending.storage = storage;
pending.totalConsumption = totalConsumption;
pending.totalProduction = totalProduction;
pending.totalAcquisition = totalAcquisition;
pending.totalReturn = totalReturn;
m_pendingPowerBalanceSamples.append(pending);
return true;
}
QSqlQuery query = QSqlQuery(m_db);
query.prepare("INSERT INTO powerBalance (timestamp, sampleRate, consumption, production, acquisition, storage, totalConsumption, totalProduction, totalAcquisition, totalReturn) values (?, ?, ?, ?, ?, ?, ?, ?, ?, ?);");
query.addBindValue(timestamp.toMSecsSinceEpoch());
query.addBindValue(sampleRate);
query.addBindValue(consumption);
query.addBindValue(production);
query.addBindValue(acquisition);
query.addBindValue(storage);
query.addBindValue(totalConsumption);
query.addBindValue(totalProduction);
query.addBindValue(totalAcquisition);
query.addBindValue(totalReturn);
query.exec();
if (query.lastError().isValid()) {
qCWarning(dcEnergyExperience()) << "Error logging consumption sample:" << query.lastError() << query.executedQuery();
return false;
}
emit powerBalanceEntryAdded(sampleRate, PowerBalanceLogEntry(timestamp, consumption, production, acquisition, storage, totalConsumption, totalProduction, totalAcquisition, totalReturn));
return true;
}
bool EnergyLogger::sampleThingsPower(SampleRate sampleRate, SampleRate baseSampleRate, const QDateTime &sampleEnd)
{
bool ret = true;
foreach (const ThingId &thingId, m_thingsPowerLiveLogs.keys()) {
ret &= sampleThingPower(thingId, sampleRate, baseSampleRate, sampleEnd);
}
return ret;
}
bool EnergyLogger::sampleThingPower(const ThingId &thingId, SampleRate sampleRate, SampleRate baseSampleRate, const QDateTime &sampleEnd)
{
QDateTime sampleStart = calculateSampleStart(sampleEnd, sampleRate);
qCDebug(dcEnergyExperience()) << "Sampling thing power for" << thingId.toString() << sampleRate << "from" << sampleStart.toString() << "to" << sampleEnd.toString();
double medianCurrentPower = 0;
double totalConsumption = 0;
double totalProduction = 0;
QSqlQuery query(m_db);
query.prepare("SELECT * FROM thingPower WHERE thingId = ? AND sampleRate = ? AND timestamp > ? AND timestamp <= ? ORDER BY timestamp ASC;");
query.addBindValue(thingId);
query.addBindValue(baseSampleRate);
query.addBindValue(sampleStart.toMSecsSinceEpoch());
query.addBindValue(sampleEnd.toMSecsSinceEpoch());
query.exec();
if (query.lastError().isValid()) {
qCWarning(dcEnergyExperience()) << "Error fetching thing power samples for" << baseSampleRate << "from" << sampleStart.toString() << "to" << sampleEnd.toString();
qCWarning(dcEnergyExperience()) << "SQL error was:" << query.lastError() << "executed query:" << query.executedQuery();
return false;
}
qCDebug(dcEnergyExperience()) << "Query:" << query.executedQuery();
qCDebug(dcEnergyExperience()) << "Results:" << query.size();
int resultCount = 0;
while (query.next()) {
resultCount++;
qCDebug(dcEnergyExperience()) << "Frame:" << query.value("currentPower").toDouble() << QDateTime::fromMSecsSinceEpoch(query.value("timestamp").toLongLong()).toString();
medianCurrentPower += query.value("currentPower").toDouble();
totalConsumption = query.value("totalConsumption").toDouble();
totalProduction = query.value("totalProduction").toDouble();
}
if (resultCount > 0) {
medianCurrentPower = medianCurrentPower * baseSampleRate / sampleRate;
} else {
// If there are no base samples for the given time frame at all, let's try to find the last existing one in the base
// to at least copy the totals from where we left off.
query = QSqlQuery(m_db);
query.prepare("SELECT * FROM thingPower WHERE thingId = ? AND sampleRate = ? ORDER BY timestamp DESC LIMIT 1;");
query.addBindValue(thingId);
query.addBindValue(baseSampleRate);
query.exec();
if (query.lastError().isValid()) {
qCWarning(dcEnergyExperience()) << "Error fetching newest thing power sample for" << thingId.toString() << baseSampleRate;
qCWarning(dcEnergyExperience()) << "SQL error was:" << query.lastError() << "executed query:" << query.executedQuery();
return false;
}
if (query.next()) {
totalConsumption = query.value("totalConsumption").toDouble();
totalProduction = query.value("totalProduction").toDouble();
}
}
qCDebug(dcEnergyExperience()) << "Sampled:" << thingId.toString() << sampleRate << "median currentPower:" << medianCurrentPower << "total consumption:" << totalConsumption << "total production:" << totalProduction;
return insertThingPower(sampleEnd, sampleRate, thingId, medianCurrentPower, totalConsumption, totalProduction);
}
bool EnergyLogger::insertThingPower(const QDateTime &timestamp, SampleRate sampleRate, const ThingId &thingId, double currentPower, double totalConsumption, double totalProduction)
{
if (m_dbMaintenanceRunning) {
PendingThingPowerSample pending;
pending.timestamp = timestamp;
pending.sampleRate = sampleRate;
pending.thingId = thingId;
pending.currentPower = currentPower;
pending.totalConsumption = totalConsumption;
pending.totalProduction = totalProduction;
m_pendingThingPowerSamples.append(pending);
return true;
}
QSqlQuery query = QSqlQuery(m_db);
query.prepare("INSERT INTO thingPower (timestamp, sampleRate, thingId, currentPower, totalConsumption, totalProduction) values (?, ?, ?, ?, ?, ?);");
query.addBindValue(timestamp.toMSecsSinceEpoch());
query.addBindValue(sampleRate);
query.addBindValue(thingId);
query.addBindValue(currentPower);
query.addBindValue(totalConsumption);
query.addBindValue(totalProduction);
query.exec();
if (query.lastError().isValid()) {
qCWarning(dcEnergyExperience()) << "Error logging thing power sample:" << query.lastError() << query.executedQuery();
return false;
}
emit thingPowerEntryAdded(sampleRate, ThingPowerLogEntry(timestamp, thingId, currentPower, totalConsumption, totalProduction));
return true;
}
void EnergyLogger::trimPowerBalance(SampleRate sampleRate, const QDateTime &beforeTime)
{
if (m_dbMaintenanceRunning) {
return;
}
QSqlQuery query(m_db);
query.prepare("DELETE FROM powerBalance WHERE sampleRate = ? AND timestamp < ?;");
query.addBindValue(sampleRate);
query.addBindValue(beforeTime.toMSecsSinceEpoch());
query.exec();
if (query.numRowsAffected() > 0) {
qCDebug(dcEnergyExperience()).nospace() << "Trimmed " << query.numRowsAffected() << " from power balance series: " << sampleRate << " (Older than: " << beforeTime.toString() << ")";
}
}
void EnergyLogger::trimThingPower(const ThingId &thingId, SampleRate sampleRate, const QDateTime &beforeTime)
{
if (m_dbMaintenanceRunning) {
return;
}
QSqlQuery query(m_db);
query.prepare("DELETE FROM thingPower WHERE thingId = ? AND sampleRate = ? AND timestamp < ?;");
query.addBindValue(thingId);
query.addBindValue(sampleRate);
query.addBindValue(beforeTime.toMSecsSinceEpoch());
query.exec();
if (query.numRowsAffected() > 0) {
qCDebug(dcEnergyExperience()).nospace() << "Trimmed " << query.numRowsAffected() << " from thing power series for: " << thingId << sampleRate << " (Older than: " << beforeTime.toString() << ")";
}
}
PowerBalanceLogEntry EnergyLogger::queryResultToBalanceLogEntry(const QSqlRecord &record) const
{
return PowerBalanceLogEntry(QDateTime::fromMSecsSinceEpoch(record.value("timestamp").toLongLong()),
record.value("consumption").toDouble(),
record.value("production").toDouble(),
record.value("acquisition").toDouble(),
record.value("storage").toDouble(),
record.value("totalConsumption").toDouble(),
record.value("totalProduction").toDouble(),
record.value("totalAcquisition").toDouble(),
record.value("totalReturn").toDouble());
}
ThingPowerLogEntry EnergyLogger::queryResultToThingPowerLogEntry(const QSqlRecord &record) const
{
return ThingPowerLogEntry(QDateTime::fromMSecsSinceEpoch(record.value("timestamp").toULongLong()),
record.value("thingId").toUuid(),
record.value("currentPower").toDouble(),
record.value("totalConsumption").toDouble(),
record.value("totalProduction").toDouble());
}