nuts-foundation/nuts-node

/*
 * Copyright (C) 2024 Nuts community
 *
 * This program 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.
 *
 * This program 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 this program.  If not, see <https://www.gnu.org/licenses/>.
 *
 */

package storage

import (
    "context"
    "errors"
    "github.com/sirupsen/logrus"
    "gorm.io/gorm"
    "gorm.io/gorm/logger"
    "time"
)

var _ logger.Interface = (*gormLogrusLogger)(nil)
var nowFunc = time.Now

// gormLogrusLogger is a logger that uses logrus as underlying logger for gorm
type gormLogrusLogger struct {
    underlying    *logrus.Entry
    slowThreshold time.Duration
}

func (g gormLogrusLogger) LogMode(level logger.LogLevel) logger.Interface {
    // Ignored, level determined by underlying logger
    return g
}

func (g gormLogrusLogger) Info(_ context.Context, msg string, args ...interface{}) {
    g.underlying.Infof(msg, args...)
}

func (g gormLogrusLogger) Warn(ctx context.Context, msg string, args ...interface{}) {
    g.underlying.Warnf(msg, args...)
}

func (g gormLogrusLogger) Error(ctx context.Context, msg string, args ...interface{}) {
    g.underlying.Errorf(msg, args...)
}

func (g gormLogrusLogger) Trace(_ context.Context, begin time.Time, fn func() (sql string, rowsAffected int64), err error) {
    // If time since begin is greater than slowThreshold, log as warning
    // Otherwise, log on TRACE
    elapsed := nowFunc().Sub(begin)
    sql, _ := fn()
    if err != nil && !errors.Is(err, gorm.ErrRecordNotFound) {
        g.underlying.WithError(err).Warnf("Query failed (took %s): %s", elapsed, sql)
        return
    }
    if elapsed >= g.slowThreshold {
        g.underlying.Warnf("Slow query (took %s): %s", elapsed, sql)
    } else {
        g.underlying.Tracef("Query (took %s): %s", elapsed, sql)
    }
}