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package cleanupmanager
import (
"context"
"database/sql"
"errors"
"fmt"
"github.com/jackc/pgx/v5"
"github.com/riverqueue/river"
"github.com/target/goalert/gadb"
)
type AlertLogLFWArgs struct{}
func (AlertLogLFWArgs) Kind() string { return "cleanup-manager-alert-logs-lfw" }
type AlertLogArgs struct {
StartID int64
EndID int64
}
const (
batchSize = 5000
blockSize = 100000
)
// LookForWorkAlertLogs will schedule alert log cleanup jobs for blocks of alert log IDs.
//
// The strategy here is to look for the minimum and maximum alert log IDs in the database, then schedule jobs for each `blockSize` block of IDs,
// and those jobs will then cleanup the alert logs in that range `batchSize` at a time.
func (db *DB) LookForWorkAlertLogs(ctx context.Context, j *river.Job[AlertLogLFWArgs]) error {
var min, max int64
err := db.lock.WithTxShared(ctx, func(ctx context.Context, tx *sql.Tx) error {
row, err := gadb.New(tx).CleanupMgrAlertLogsMinMax(ctx)
if err != nil {
return err
}
min, max = row.MinID, row.MaxID
return nil
})
if min == 0 && max == 0 {
return nil
}
if err != nil {
return fmt.Errorf("get min/max alert log ID: %w", err)
}
max++
var params []river.InsertManyParams
for i := int64(0); i < max; i += blockSize {
if i < min {
// skip sparse blocks
continue
}
params = append(params, river.InsertManyParams{
Args: AlertLogArgs{StartID: i, EndID: i + blockSize},
InsertOpts: &river.InsertOpts{
Queue: QueueName,
Priority: PriorityAlertLogs,
UniqueOpts: river.UniqueOpts{ByArgs: true},
},
})
}
if len(params) == 0 {
return nil
}
_, err = river.ClientFromContext[pgx.Tx](ctx).InsertMany(ctx, params)
if err != nil {
return fmt.Errorf("insert many: %w", err)
}
return nil
}
func (AlertLogArgs) Kind() string { return "cleanup-manager-alert-logs" }
// CleanupAlertLogs will remove alert log entries for deleted alerts.
func (db *DB) CleanupAlertLogs(ctx context.Context, j *river.Job[AlertLogArgs]) error {
lastID := j.Args.StartID
err := db.whileWork(ctx, func(ctx context.Context, tx *sql.Tx) (done bool, err error) {
db.logger.DebugContext(ctx, "Cleaning up alert logs...", "lastID", lastID)
lastID, err = gadb.New(tx).CleanupAlertLogs(ctx,
gadb.CleanupAlertLogsParams{
BatchSize: batchSize,
StartID: lastID,
EndID: j.Args.EndID,
})
if errors.Is(err, sql.ErrNoRows) {
return true, nil
}
if err != nil {
return false, fmt.Errorf("cleanup alert logs: %w", err)
}
return false, nil
})
if err != nil {
return fmt.Errorf("cleanup alert logs: %w", err)
}
return nil
}
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