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backup.go
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backup.go
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package system
import (
"bufio"
"context"
"fmt"
"os"
"time"
"github.com/comunidade-shallom/peristera/pkg/config"
"github.com/comunidade-shallom/peristera/pkg/database"
"github.com/comunidade-shallom/peristera/pkg/support"
"github.com/comunidade-shallom/peristera/pkg/telegram"
"github.com/rs/zerolog"
"gopkg.in/telebot.v3"
)
type DestroyBackup func()
func noop() {}
func Backup(ctx context.Context, db database.Database) (*os.File, DestroyBackup, error) {
logger := zerolog.Ctx(ctx)
file, err := os.CreateTemp(os.TempDir(), "peristera.*.bak")
if err != nil {
return file, noop, err
}
destroy := func() {
name := file.Name()
_ = file.Close()
_ = os.Remove(name)
}
logger.Info().Msgf("Temp backup file created: %s", file.Name())
bw := bufio.NewWriterSize(file, 64<<20) //nolint:gomnd
// run backup
if err = db.Backup(bw); err != nil {
return file, destroy, err
}
logger.Debug().Msg("Backup generated")
if err = bw.Flush(); err != nil {
return file, destroy, err
}
if err = file.Sync(); err != nil {
return file, destroy, err
}
return file, destroy, nil
}
func NotifyBackupErr(ctx context.Context, bot *telebot.Bot, header string, userIDs []int64, err error) error {
host := config.Hostname() + " (" + config.Version() + ")"
cfg := *config.Ctx(ctx)
logger := zerolog.Ctx(ctx).
With().
Str("context", "system:notify-backup-err").
Logger()
logger.Warn().Msg("Notify on error...")
msg := fmt.Sprintf(
"*%s*\n\n*🖥️ System Notify:*\n`%s`\n\n*🔴 Backup Error:*\n`%s`\n\n*🕰️ System time:*\n`%s`\n\n📁 `%s`",
support.AddSlashes(header),
host,
err.Error(),
time.Now().Format(time.RFC3339),
cfg.Store.Path,
)
for _, id := range userIDs {
_, err = bot.Send(&telebot.User{
ID: id,
}, msg, telebot.ModeMarkdownV2)
if err != nil {
logger.Warn().Err(err).Int64("userId", id).Msg("Fail to sent notify")
}
}
return nil
}
func NotifyBackup(ctx context.Context, bot *telebot.Bot, header string, userIDs []int64, file *os.File) error {
host := config.Hostname() + " (" + config.Version() + ")"
cfg := *config.Ctx(ctx)
logger := zerolog.Ctx(ctx).
With().
Str("context", "system:notify-backup").
Logger()
caption := fmt.Sprintf(
"*%s*\n\n*🖥️ System Notify:*\n`%s`\n\n*🗄️ Peristera Backup:*\n`%s`\n\n📁`%s`",
support.AddSlashes(header),
host,
time.Now().Format(time.RFC3339),
cfg.Store.Path,
)
document := telegram.Document(file, caption)
for _, id := range userIDs {
document.Caption = caption // it changes over the loop, missing scapes
_, err := bot.Send(&telebot.User{
ID: id,
}, document, telebot.ModeMarkdownV2)
if err != nil {
logger.Warn().Err(err).Int64("userId", id).Msg("Fail to sent backup file")
}
}
logger.Info().Msgf("System backup sent do telegram %v", userIDs)
return nil
}