72 lines
2.7 KiB
Go
72 lines
2.7 KiB
Go
// Copyright 2023 PingCAP, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package builder
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import (
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"github.com/pingcap/tidb/pkg/distsql"
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"github.com/pingcap/tidb/pkg/kv"
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planctx "github.com/pingcap/tidb/pkg/planner/context"
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plannercore "github.com/pingcap/tidb/pkg/planner/core/base"
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"github.com/pingcap/tidb/pkg/sessionctx"
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"github.com/pingcap/tidb/pkg/sessionctx/variable"
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"github.com/pingcap/tidb/pkg/util/timeutil"
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"github.com/pingcap/tipb/go-tipb"
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)
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// ConstructTreeBasedDistExec constructs tree based DAGRequest
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func ConstructTreeBasedDistExec(pctx *planctx.BuildPBContext, p plannercore.PhysicalPlan) ([]*tipb.Executor, error) {
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execPB, err := p.ToPB(pctx, kv.TiFlash)
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return []*tipb.Executor{execPB}, err
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}
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// ConstructListBasedDistExec constructs list based DAGRequest
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func ConstructListBasedDistExec(pctx *planctx.BuildPBContext, plans []plannercore.PhysicalPlan) ([]*tipb.Executor, error) {
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executors := make([]*tipb.Executor, 0, len(plans))
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for _, p := range plans {
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execPB, err := p.ToPB(pctx, kv.TiKV)
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if err != nil {
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return nil, err
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}
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executors = append(executors, execPB)
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}
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return executors, nil
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}
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// ConstructDAGReq constructs DAGRequest for physical plans
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func ConstructDAGReq(ctx sessionctx.Context, plans []plannercore.PhysicalPlan, storeType kv.StoreType) (dagReq *tipb.DAGRequest, err error) {
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dagReq = &tipb.DAGRequest{}
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dagReq.TimeZoneName, dagReq.TimeZoneOffset = timeutil.Zone(ctx.GetSessionVars().Location())
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sc := ctx.GetSessionVars().StmtCtx
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if sc.RuntimeStatsColl != nil {
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collExec := true
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dagReq.CollectExecutionSummaries = &collExec
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}
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dagReq.Flags = sc.PushDownFlags()
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if ctx.GetSessionVars().GetDivPrecisionIncrement() != variable.DefDivPrecisionIncrement {
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var divPrecIncr uint32 = uint32(ctx.GetSessionVars().GetDivPrecisionIncrement())
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dagReq.DivPrecisionIncrement = &divPrecIncr
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}
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if storeType == kv.TiFlash {
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var executors []*tipb.Executor
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executors, err = ConstructTreeBasedDistExec(ctx.GetBuildPBCtx(), plans[0])
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dagReq.RootExecutor = executors[0]
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} else {
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dagReq.Executors, err = ConstructListBasedDistExec(ctx.GetBuildPBCtx(), plans)
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}
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distsql.SetEncodeType(ctx.GetDistSQLCtx(), dagReq)
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return dagReq, err
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}
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