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Gen4: query timeout in comment directive #9008

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merged 2 commits into from
Oct 18, 2021
Merged

Gen4: query timeout in comment directive #9008

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4d15e6c
gen4: query timeout in comment directive
harshit-gangal Oct 17, 2021
c248b3b
added query timeout to route primitive description if set
harshit-gangal Oct 18, 2021
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33 changes: 24 additions & 9 deletions go/vt/vtgate/planbuilder/gen4_planner.go
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Original file line number Diff line number Diff line change
Expand Up @@ -167,15 +167,9 @@ func newBuildSelectPlan(selStmt sqlparser.SelectStatement, reservedVars *sqlpars
return nil, err
}

directives := sqlparser.ExtractCommentDirectives(sqlparser.GetFirstSelect(selStmt).Comments)
if directives.IsSet(sqlparser.DirectiveScatterErrorsAsWarnings) {
_, _ = visit(plan, func(logicalPlan logicalPlan) (bool, logicalPlan, error) {
switch plan := logicalPlan.(type) {
case *route:
plan.eroute.ScatterErrorsAsWarnings = true
}
return true, logicalPlan, nil
})
plan, err = pushCommentDirectivesOnPlan(plan, selStmt)
if err != nil {
return nil, err
}

return plan, nil
Expand Down Expand Up @@ -270,3 +264,24 @@ func planOrderByOnUnion(ctx *planningContext, plan logicalPlan, union *sqlparser
}
return plan, nil
}

func pushCommentDirectivesOnPlan(plan logicalPlan, stmt sqlparser.SelectStatement) (logicalPlan, error) {
directives := sqlparser.ExtractCommentDirectives(sqlparser.GetFirstSelect(stmt).Comments)
scatterAsWarns := false
if directives.IsSet(sqlparser.DirectiveScatterErrorsAsWarnings) {
scatterAsWarns = true
}
queryTimeout := queryTimeout(directives)
if scatterAsWarns || queryTimeout > 0 {
_, _ = visit(plan, func(logicalPlan logicalPlan) (bool, logicalPlan, error) {
switch plan := logicalPlan.(type) {
case *route:
plan.eroute.ScatterErrorsAsWarnings = scatterAsWarns
plan.eroute.QueryTimeout = queryTimeout
}
return true, logicalPlan, nil
})
}

return plan, nil
}