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## What changed? Add SQL support for matching task fairness. Based on #8043 with some changes to reduce code duplication (can be applied to cassandra later). ## Why? Support all persistence implementations. ## How did you test it? - [x] covered by existing tests - [x] added new unit test(s) --------- Co-authored-by: sivagirish81 <[email protected]>
92 lines
2.3 KiB
Go
92 lines
2.3 KiB
Go
package postgresql
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import (
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"context"
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"database/sql"
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"go.temporal.io/api/serviceerror"
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"go.temporal.io/server/common/persistence/sql/sqlplugin"
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)
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const (
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getTaskMinMaxQry = `SELECT task_id, data, data_encoding ` +
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`FROM tasks ` +
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`WHERE range_hash = $1 AND task_queue_id=$2 AND task_id >= $3 AND task_id < $4 ` +
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`ORDER BY task_id LIMIT $5`
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getTaskMinQry = `SELECT task_id, data, data_encoding ` +
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`FROM tasks ` +
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`WHERE range_hash = $1 AND task_queue_id = $2 AND task_id >= $3 ORDER BY task_id LIMIT $4`
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createTaskQry = `INSERT INTO ` +
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`tasks(range_hash, task_queue_id, task_id, data, data_encoding) ` +
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`VALUES(:range_hash, :task_queue_id, :task_id, :data, :data_encoding)`
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rangeDeleteTaskQry = `DELETE FROM tasks ` +
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`WHERE range_hash = $1 AND task_queue_id = $2 AND task_id IN (SELECT task_id FROM
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tasks WHERE range_hash = $1 AND task_queue_id = $2 AND task_id < $3 ` +
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`ORDER BY task_queue_id,task_id LIMIT $4 )`
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)
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// InsertIntoTasks inserts one or more rows into tasks table
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func (pdb *db) InsertIntoTasks(
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ctx context.Context,
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rows []sqlplugin.TasksRow,
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) (sql.Result, error) {
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return pdb.NamedExecContext(ctx,
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createTaskQry,
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rows,
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)
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}
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// SelectFromTasks reads one or more rows from tasks table
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func (pdb *db) SelectFromTasks(
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ctx context.Context,
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filter sqlplugin.TasksFilter,
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) ([]sqlplugin.TasksRow, error) {
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var err error
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var rows []sqlplugin.TasksRow
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switch {
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case filter.ExclusiveMaxTaskID != nil:
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err = pdb.SelectContext(ctx,
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&rows,
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getTaskMinMaxQry,
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filter.RangeHash,
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filter.TaskQueueID,
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*filter.InclusiveMinTaskID,
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*filter.ExclusiveMaxTaskID,
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*filter.PageSize,
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)
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default:
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err = pdb.SelectContext(ctx,
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&rows,
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getTaskMinQry,
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filter.RangeHash,
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filter.TaskQueueID,
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*filter.InclusiveMinTaskID,
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*filter.PageSize,
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)
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}
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return rows, err
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}
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// DeleteFromTasks deletes multiple rows from tasks table
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func (pdb *db) DeleteFromTasks(
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ctx context.Context,
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filter sqlplugin.TasksFilter,
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) (sql.Result, error) {
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if filter.ExclusiveMaxTaskID == nil {
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return nil, serviceerror.NewInternal("missing ExclusiveMaxTaskID parameter")
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}
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if filter.Limit == nil || *filter.Limit == 0 {
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return nil, serviceerror.NewInternal("missing limit parameter")
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}
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return pdb.ExecContext(ctx,
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rangeDeleteTaskQry,
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filter.RangeHash,
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filter.TaskQueueID,
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*filter.ExclusiveMaxTaskID,
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*filter.Limit,
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)
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}
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