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Go
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import ( "context" "time"
"github.com/bluesky-social/indigo/atproto/syntax" "tangled.org/core/appview/models")
// "migration" for records stored in user's PDS, not AppView DB
// ListPendingPdsRecordMigrations queries list of pending PDS migrations for given user.// Only pending migrations whose `retry_after` has elapsed are returned.func ListPendingPdsRecordMigrations(ctx context.Context, e Execer, user syntax.DID) ([]*models.PDSMigration, error) { rows, err := e.QueryContext(ctx, `with picked as ( select rowid from pds_migration where did = ? and status = 'pending' and retry_after < ? ) update pds_migration set status = ? where rowid in (select rowid from picked) returning name, did, collection, rkey, status, error_msg, retry_count, retry_after`, user, time.Now().Unix(), models.PDSMigrationStatusRunning, ) if err != nil { return nil, err } defer rows.Close()
var migrations []*models.PDSMigration for rows.Next() { var migration models.PDSMigration if err := rows.Scan( &migration.Name, &migration.Did, &migration.Collection, &migration.Rkey, &migration.Status, &migration.ErrorMsg, &migration.RetryCount, &migration.RetryAfter, ); err != nil { return nil, err } migrations = append(migrations, &migration) } if err := rows.Err(); err != nil { return nil, err }
return migrations, nil}
func HasPendingPdsRecordMigration(ctx context.Context, e Execer, user syntax.DID) (bool, error) { var exists bool err := e.QueryRowContext(ctx, `select exists( select 1 from pds_migration where did = ? and status = 'pending' and retry_after < ? )`, user, time.Now().Unix(), ).Scan(&exists) if err != nil { return false, err } return exists, nil}
func EnqueuePdsRecordMigration(ctx context.Context, e Execer, name string, did syntax.DID, collection syntax.NSID, rkey syntax.RecordKey) error { _, err := e.ExecContext(ctx, `insert into pds_migration (name, did, collection, rkey) values (?, ?, ?, ?) on conflict(name, did, collection, rkey) do update set status = case when pds_migration.status = 'failed' then 'pending' else pds_migration.status end, retry_count = case when pds_migration.status = 'failed' then 0 else pds_migration.retry_count end, retry_after = case when pds_migration.status = 'failed' then 0 else pds_migration.retry_after end, error_msg = case when pds_migration.status = 'failed' then null else pds_migration.error_msg end`, name, did, collection, rkey, ) return err}
func ReapStaleRunningMigrations(ctx context.Context, e Execer) error { _, err := e.ExecContext(ctx, `update pds_migration set status = 'pending' where status = 'running'`, ) return err}
func UpdatePdsRecordMigration(ctx context.Context, e Execer, migration *models.PDSMigration) error { _, err := e.ExecContext(ctx, `update pds_migration set status = ?, error_msg = ?, retry_count = ?, retry_after = ?, updated_at = strftime('%Y-%m-%dT%H:%M:%SZ', 'now') where name = ? and did = ? and collection = ? and rkey = ?`, migration.Status, migration.ErrorMsg, migration.RetryCount, migration.RetryAfter, migration.Name, migration.Did, migration.Collection, migration.Rkey, ) return err}