/
test_util.go
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/
test_util.go
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// Copyright 2019 PingCAP, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// See the License for the specific language governing permissions and
// limitations under the License.
package schedule
import (
"github.com/pingcap/kvproto/pkg/metapb"
"github.com/pingcap/pd/v3/pkg/mock/mockcluster"
"github.com/pingcap/pd/v3/server/core"
"github.com/pingcap/pd/v3/server/schedule/operator"
)
// ApplyOperatorStep applies operator step. Only for test purpose.
func ApplyOperatorStep(region *core.RegionInfo, op *operator.Operator) *core.RegionInfo {
_ = op.Start()
if step := op.Check(region); step != nil {
switch s := step.(type) {
case operator.TransferLeader:
region = region.Clone(core.WithLeader(region.GetStorePeer(s.ToStore)))
case operator.AddPeer:
if region.GetStorePeer(s.ToStore) != nil {
panic("Add peer that exists")
}
peer := &metapb.Peer{
Id: s.PeerID,
StoreId: s.ToStore,
}
region = region.Clone(core.WithAddPeer(peer))
case operator.AddLightPeer:
if region.GetStorePeer(s.ToStore) != nil {
panic("Add peer that exists")
}
peer := &metapb.Peer{
Id: s.PeerID,
StoreId: s.ToStore,
}
region = region.Clone(core.WithAddPeer(peer))
case operator.RemovePeer:
if region.GetStorePeer(s.FromStore) == nil {
panic("Remove peer that doesn't exist")
}
if region.GetLeader().GetStoreId() == s.FromStore {
panic("Cannot remove the leader peer")
}
region = region.Clone(core.WithRemoveStorePeer(s.FromStore))
case operator.AddLearner:
if region.GetStorePeer(s.ToStore) != nil {
panic("Add learner that exists")
}
peer := &metapb.Peer{
Id: s.PeerID,
StoreId: s.ToStore,
IsLearner: true,
}
region = region.Clone(core.WithAddPeer(peer))
case operator.AddLightLearner:
if region.GetStorePeer(s.ToStore) != nil {
panic("Add learner that exists")
}
peer := &metapb.Peer{
Id: s.PeerID,
StoreId: s.ToStore,
IsLearner: true,
}
region = region.Clone(core.WithAddPeer(peer))
case operator.PromoteLearner:
if region.GetStoreLearner(s.ToStore) == nil {
panic("Promote peer that doesn't exist")
}
peer := &metapb.Peer{
Id: s.PeerID,
StoreId: s.ToStore,
}
region = region.Clone(core.WithRemoveStorePeer(s.ToStore), core.WithAddPeer(peer))
default:
panic("Unknown operator step")
}
}
return region
}
// ApplyOperator applies operator. Only for test purpose.
func ApplyOperator(mc *mockcluster.Cluster, op *operator.Operator) {
origin := mc.GetRegion(op.RegionID())
region := origin
for !op.IsEnd() {
region = ApplyOperatorStep(region, op)
}
mc.PutRegion(region)
for id := range region.GetStoreIds() {
mc.UpdateStoreStatus(id)
}
for id := range origin.GetStoreIds() {
mc.UpdateStoreStatus(id)
}
}