mirror of
https://github.com/featurebasedb/featurebase.git
synced 2026-08-28 10:54:59 +00:00
a1fc6d04a1
* performance counters
* first cut of perf counters and system table fanout and a wire protocol
* significantly refactored prometheus support; removed statsd and exprvar
* removed node_id
* put dax subquery test back
* Change Translator.TranslateFieldIDs method to take a dax.TableKeyer
There are a bunch of other calls to the Translator interface methods
with currently take an `index string`, and those need to be converted to
dax.TableKeyer as well. But I need to review each call, because in at
least one place I noticed one being called with `result.Index` instead
of with the qtbl available. And I don't yet know how those could be
different.
Co-authored-by: Travis Turner <travis@molecula.com>
(cherry picked from commit 7f6ea0e6e5)
114 lines
2.9 KiB
Go
114 lines
2.9 KiB
Go
// Copyright 2022 Molecula Corp. All rights reserved.
|
|
|
|
package planner
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
|
|
"github.com/featurebasedb/featurebase/v3/sql3"
|
|
"github.com/featurebasedb/featurebase/v3/sql3/planner/types"
|
|
)
|
|
|
|
// PlanOpFanout is a query fanout operator that will execute an operator across all cluster nodes
|
|
type PlanOpFanout struct {
|
|
planner *ExecutionPlanner
|
|
ChildOp types.PlanOperator
|
|
warnings []string
|
|
}
|
|
|
|
func NewPlanOpFanout(planner *ExecutionPlanner, child types.PlanOperator) *PlanOpFanout {
|
|
return &PlanOpFanout{
|
|
planner: planner,
|
|
ChildOp: child,
|
|
warnings: make([]string, 0),
|
|
}
|
|
}
|
|
|
|
func (p *PlanOpFanout) Schema() types.Schema {
|
|
return p.ChildOp.Schema()
|
|
}
|
|
|
|
func (p *PlanOpFanout) Iterator(ctx context.Context, row types.Row) (types.RowIterator, error) {
|
|
return newFanOutIterator(p.planner, p.ChildOp), nil
|
|
}
|
|
|
|
func (p *PlanOpFanout) WithChildren(children ...types.PlanOperator) (types.PlanOperator, error) {
|
|
if len(children) != 1 {
|
|
return nil, sql3.NewErrInternalf("unexpected number of children '%d'", len(children))
|
|
}
|
|
return NewPlanOpFanout(p.planner, children[0]), nil
|
|
}
|
|
|
|
func (p *PlanOpFanout) Children() []types.PlanOperator {
|
|
return []types.PlanOperator{
|
|
p.ChildOp,
|
|
}
|
|
}
|
|
|
|
func (p *PlanOpFanout) Plan() map[string]interface{} {
|
|
result := make(map[string]interface{})
|
|
result["_op"] = fmt.Sprintf("%T", p)
|
|
ps := make([]string, 0)
|
|
for _, e := range p.Schema() {
|
|
ps = append(ps, fmt.Sprintf("'%s', '%s', '%s'", e.ColumnName, e.RelationName, e.Type.TypeDescription()))
|
|
}
|
|
result["_schema"] = ps
|
|
result["child"] = p.ChildOp.Plan()
|
|
return result
|
|
}
|
|
|
|
func (p *PlanOpFanout) String() string {
|
|
return ""
|
|
}
|
|
|
|
func (p *PlanOpFanout) AddWarning(warning string) {
|
|
p.warnings = append(p.warnings, warning)
|
|
}
|
|
|
|
func (p *PlanOpFanout) Warnings() []string {
|
|
return p.warnings
|
|
}
|
|
|
|
func (p *PlanOpFanout) Expressions() []types.PlanExpression {
|
|
return []types.PlanExpression{}
|
|
}
|
|
|
|
func (p *PlanOpFanout) WithUpdatedExpressions(exprs ...types.PlanExpression) (types.PlanOperator, error) {
|
|
if len(exprs) != 1 {
|
|
return nil, sql3.NewErrInternalf("unexpected number of exprs '%d'", len(exprs))
|
|
}
|
|
return NewPlanOpFilter(p.planner, exprs[0], p.ChildOp), nil
|
|
}
|
|
|
|
type fanOutIterator struct {
|
|
planner *ExecutionPlanner
|
|
childOp types.PlanOperator
|
|
rows types.Rows
|
|
}
|
|
|
|
func newFanOutIterator(planner *ExecutionPlanner, childOp types.PlanOperator) *fanOutIterator {
|
|
return &fanOutIterator{
|
|
planner: planner,
|
|
childOp: childOp,
|
|
}
|
|
}
|
|
|
|
func (i *fanOutIterator) Next(ctx context.Context) (types.Row, error) {
|
|
if i.rows == nil {
|
|
rows, err := i.planner.mapReducePlanOp(ctx, i.childOp, func(ctx context.Context, prev, v types.Rows) (types.Rows, error) {
|
|
return append(prev, v...), nil
|
|
})
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
i.rows = rows
|
|
}
|
|
if len(i.rows) > 0 {
|
|
row := i.rows[0]
|
|
// Move to next result element.
|
|
i.rows = i.rows[1:]
|
|
return row, nil
|
|
}
|
|
return nil, types.ErrNoMoreRows
|
|
}
|