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|
| | package swodb |
| |
|
| | import ( |
| | "context" |
| |
|
| | "github.com/jackc/pgx/v5/pgtype" |
| | ) |
| |
|
| | const activeTxCount = `-- name: ActiveTxCount :one |
| | SELECT COUNT(*) |
| | FROM pg_stat_activity |
| | WHERE "state" <> 'idle' |
| | AND "xact_start" <= $1 |
| | ` |
| |
|
| | func (q *Queries) ActiveTxCount(ctx context.Context, xactStart pgtype.Timestamptz) (int64, error) { |
| | row := q.db.QueryRow(ctx, activeTxCount, xactStart) |
| | var count int64 |
| | err := row.Scan(&count) |
| | return count, err |
| | } |
| |
|
| | const connectionInfo = `-- name: ConnectionInfo :many |
| | SELECT application_name AS NAME, |
| | COUNT(*) |
| | FROM pg_stat_activity |
| | WHERE datname = current_database() |
| | GROUP BY NAME |
| | ` |
| |
|
| | type ConnectionInfoRow struct { |
| | Name pgtype.Text |
| | Count int64 |
| | } |
| |
|
| | func (q *Queries) ConnectionInfo(ctx context.Context) ([]ConnectionInfoRow, error) { |
| | rows, err := q.db.Query(ctx, connectionInfo) |
| | if err != nil { |
| | return nil, err |
| | } |
| | defer rows.Close() |
| | var items []ConnectionInfoRow |
| | for rows.Next() { |
| | var i ConnectionInfoRow |
| | if err := rows.Scan(&i.Name, &i.Count); err != nil { |
| | return nil, err |
| | } |
| | items = append(items, i) |
| | } |
| | if err := rows.Err(); err != nil { |
| | return nil, err |
| | } |
| | return items, nil |
| | } |
| |
|
| | const databaseInfo = `-- name: DatabaseInfo :one |
| | SELECT db_id AS id, |
| | version() |
| | FROM switchover_state |
| | ` |
| |
|
| | type DatabaseInfoRow struct { |
| | ID pgtype.UUID |
| | Version string |
| | } |
| |
|
| | func (q *Queries) DatabaseInfo(ctx context.Context) (DatabaseInfoRow, error) { |
| | row := q.db.QueryRow(ctx, databaseInfo) |
| | var i DatabaseInfoRow |
| | err := row.Scan(&i.ID, &i.Version) |
| | return i, err |
| | } |
| |
|
| | const disableChangeLogTriggers = `-- name: DisableChangeLogTriggers :exec |
| | UPDATE switchover_state |
| | SET current_state = 'idle' |
| | WHERE current_state = 'in_progress' |
| | ` |
| |
|
| | func (q *Queries) DisableChangeLogTriggers(ctx context.Context) error { |
| | _, err := q.db.Exec(ctx, disableChangeLogTriggers) |
| | return err |
| | } |
| |
|
| | const enableChangeLogTriggers = `-- name: EnableChangeLogTriggers :exec |
| | UPDATE switchover_state |
| | SET current_state = 'in_progress' |
| | WHERE current_state = 'idle' |
| | ` |
| |
|
| | func (q *Queries) EnableChangeLogTriggers(ctx context.Context) error { |
| | _, err := q.db.Exec(ctx, enableChangeLogTriggers) |
| | return err |
| | } |
| |
|
| | const foreignKeyRefs = `-- name: ForeignKeyRefs :many |
| | SELECT src.relname::text, |
| | dst.relname::text |
| | FROM pg_catalog.pg_constraint con |
| | JOIN pg_catalog.pg_namespace ns ON ns.nspname = 'public' |
| | AND ns.oid = con.connamespace |
| | JOIN pg_catalog.pg_class src ON src.oid = con.conrelid |
| | JOIN pg_catalog.pg_class dst ON dst.oid = con.confrelid |
| | WHERE con.contype = 'f' |
| | AND NOT con.condeferrable |
| | ` |
| |
|
| | type ForeignKeyRefsRow struct { |
| | SrcRelname string |
| | DstRelname string |
| | } |
| |
|
| | func (q *Queries) ForeignKeyRefs(ctx context.Context) ([]ForeignKeyRefsRow, error) { |
| | rows, err := q.db.Query(ctx, foreignKeyRefs) |
| | if err != nil { |
| | return nil, err |
| | } |
| | defer rows.Close() |
| | var items []ForeignKeyRefsRow |
| | for rows.Next() { |
| | var i ForeignKeyRefsRow |
| | if err := rows.Scan(&i.SrcRelname, &i.DstRelname); err != nil { |
| | return nil, err |
| | } |
| | items = append(items, i) |
| | } |
| | if err := rows.Err(); err != nil { |
| | return nil, err |
| | } |
| | return items, nil |
| | } |
| |
|
| | const lastLogID = `-- name: LastLogID :one |
| | SELECT COALESCE(MAX(id), 0)::bigint |
| | FROM switchover_log |
| | ` |
| |
|
| | func (q *Queries) LastLogID(ctx context.Context) (int64, error) { |
| | row := q.db.QueryRow(ctx, lastLogID) |
| | var column_1 int64 |
| | err := row.Scan(&column_1) |
| | return column_1, err |
| | } |
| |
|
| | const logEvents = `-- name: LogEvents :many |
| | SELECT id, |
| | TIMESTAMP, |
| | DATA |
| | FROM switchover_log |
| | WHERE id > $1 |
| | ORDER BY id ASC |
| | LIMIT 100 |
| | ` |
| |
|
| | func (q *Queries) LogEvents(ctx context.Context, id int64) ([]SwitchoverLog, error) { |
| | rows, err := q.db.Query(ctx, logEvents, id) |
| | if err != nil { |
| | return nil, err |
| | } |
| | defer rows.Close() |
| | var items []SwitchoverLog |
| | for rows.Next() { |
| | var i SwitchoverLog |
| | if err := rows.Scan(&i.ID, &i.Timestamp, &i.Data); err != nil { |
| | return nil, err |
| | } |
| | items = append(items, i) |
| | } |
| | if err := rows.Err(); err != nil { |
| | return nil, err |
| | } |
| | return items, nil |
| | } |
| |
|
| | const now = `-- name: Now :one |
| | SELECT now()::timestamptz |
| | ` |
| |
|
| | func (q *Queries) Now(ctx context.Context) (pgtype.Timestamptz, error) { |
| | row := q.db.QueryRow(ctx, now) |
| | var column_1 pgtype.Timestamptz |
| | err := row.Scan(&column_1) |
| | return column_1, err |
| | } |
| |
|
| | const sWOConnLock = `-- name: SWOConnLock :one |
| | WITH LOCK AS ( |
| | SELECT |
| | pg_advisory_lock_shared(4369)) |
| | SELECT |
| | current_state = 'use_next_db' |
| | FROM |
| | LOCK, |
| | switchover_state |
| | ` |
| |
|
| | func (q *Queries) SWOConnLock(ctx context.Context) (bool, error) { |
| | row := q.db.QueryRow(ctx, sWOConnLock) |
| | var column_1 bool |
| | err := row.Scan(&column_1) |
| | return column_1, err |
| | } |
| |
|
| | const sWOConnUnlockAll = `-- name: SWOConnUnlockAll :exec |
| | SELECT |
| | pg_advisory_unlock_all() |
| | ` |
| |
|
| | func (q *Queries) SWOConnUnlockAll(ctx context.Context) error { |
| | _, err := q.db.Exec(ctx, sWOConnUnlockAll) |
| | return err |
| | } |
| |
|
| | const sequenceNames = `-- name: SequenceNames :many |
| | SELECT sequence_name::text |
| | FROM information_schema.sequences |
| | WHERE sequence_catalog = current_database() |
| | AND sequence_schema = 'public' |
| | AND sequence_name != 'change_log_id_seq' |
| | ` |
| |
|
| | func (q *Queries) SequenceNames(ctx context.Context) ([]string, error) { |
| | rows, err := q.db.Query(ctx, sequenceNames) |
| | if err != nil { |
| | return nil, err |
| | } |
| | defer rows.Close() |
| | var items []string |
| | for rows.Next() { |
| | var sequence_name string |
| | if err := rows.Scan(&sequence_name); err != nil { |
| | return nil, err |
| | } |
| | items = append(items, sequence_name) |
| | } |
| | if err := rows.Err(); err != nil { |
| | return nil, err |
| | } |
| | return items, nil |
| | } |
| |
|
| | const tableColumns = `-- name: TableColumns :many |
| | SELECT col.table_name::text, |
| | col.column_name::text, |
| | col.data_type::text, |
| | col.ordinal_position::INT |
| | FROM information_schema.columns col |
| | JOIN information_schema.tables t ON t.table_catalog = col.table_catalog |
| | AND t.table_schema = col.table_schema |
| | AND t.table_name = col.table_name |
| | AND t.table_type = 'BASE TABLE' |
| | WHERE col.table_catalog = current_database() |
| | AND col.table_schema = 'public' |
| | ` |
| |
|
| | type TableColumnsRow struct { |
| | ColTableName string |
| | ColColumnName string |
| | ColDataType string |
| | ColOrdinalPosition int32 |
| | } |
| |
|
| | func (q *Queries) TableColumns(ctx context.Context) ([]TableColumnsRow, error) { |
| | rows, err := q.db.Query(ctx, tableColumns) |
| | if err != nil { |
| | return nil, err |
| | } |
| | defer rows.Close() |
| | var items []TableColumnsRow |
| | for rows.Next() { |
| | var i TableColumnsRow |
| | if err := rows.Scan( |
| | &i.ColTableName, |
| | &i.ColColumnName, |
| | &i.ColDataType, |
| | &i.ColOrdinalPosition, |
| | ); err != nil { |
| | return nil, err |
| | } |
| | items = append(items, i) |
| | } |
| | if err := rows.Err(); err != nil { |
| | return nil, err |
| | } |
| | return items, nil |
| | } |
| |
|