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*: reset config if the input is invalid (#8632) #8661

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7 changes: 0 additions & 7 deletions pkg/schedule/schedulers/OWNERS

This file was deleted.

16 changes: 14 additions & 2 deletions plugin/scheduler_example/evict_leader.go
Original file line number Diff line number Diff line change
Expand Up @@ -274,9 +274,21 @@ func (handler *evictLeaderHandler) UpdateConfig(w http.ResponseWriter, r *http.R
args = append(args, handler.config.getRanges(id)...)
}

handler.config.BuildWithArgs(args)
err := handler.config.Persist()
err := handler.config.BuildWithArgs(args)
if err != nil {
handler.config.mu.Lock()
handler.config.cluster.ResumeLeaderTransfer(id)
handler.config.mu.Unlock()
handler.rd.JSON(w, http.StatusBadRequest, err.Error())
return
}

err = handler.config.Persist()
if err != nil {
handler.config.mu.Lock()
delete(handler.config.StoreIDWitRanges, id)
handler.config.cluster.ResumeLeaderTransfer(id)
handler.config.mu.Unlock()
handler.rd.JSON(w, http.StatusInternalServerError, err.Error())
}
handler.rd.JSON(w, http.StatusOK, nil)
Expand Down
14 changes: 12 additions & 2 deletions server/schedulers/evict_leader.go
Original file line number Diff line number Diff line change
Expand Up @@ -98,6 +98,9 @@ func (conf *evictLeaderSchedulerConfig) getStores() []uint64 {
}

func (conf *evictLeaderSchedulerConfig) BuildWithArgs(args []string) error {
failpoint.Inject("buildWithArgsErr", func() {
failpoint.Return(errors.New("fail to build with args"))
})
if len(args) < 1 {
return errs.ErrSchedulerConfig.FastGenByArgs("id")
}
Expand Down Expand Up @@ -390,8 +393,15 @@ func (handler *evictLeaderHandler) UpdateConfig(w http.ResponseWriter, r *http.R
args = append(args, handler.config.getRanges(id)...)
}

handler.config.BuildWithArgs(args)
err := handler.config.Persist()
err := handler.config.BuildWithArgs(args)
if err != nil {
handler.config.mu.Lock()
handler.config.cluster.ResumeLeaderTransfer(id)
handler.config.mu.Unlock()
handler.rd.JSON(w, http.StatusBadRequest, err.Error())
return
}
err = handler.config.Persist()
if err != nil {
handler.config.removeStore(id)
handler.rd.JSON(w, http.StatusInternalServerError, err.Error())
Expand Down
13 changes: 10 additions & 3 deletions server/schedulers/grant_leader.go
Original file line number Diff line number Diff line change
Expand Up @@ -294,10 +294,17 @@
args = append(args, handler.config.getRanges(id)...)
}

handler.config.BuildWithArgs(args)
err := handler.config.Persist()
err := handler.config.BuildWithArgs(args)
if err != nil {
handler.config.removeStore(id)
handler.config.mu.Lock()
handler.config.cluster.ResumeLeaderTransfer(id)
handler.config.mu.Unlock()
handler.rd.JSON(w, http.StatusBadRequest, err.Error())
return

Check warning on line 303 in server/schedulers/grant_leader.go

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server/schedulers/grant_leader.go#L299-L303

Added lines #L299 - L303 were not covered by tests
}
err = handler.config.Persist()
if err != nil {
_, _ = handler.config.removeStore(id)

Check warning on line 307 in server/schedulers/grant_leader.go

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server/schedulers/grant_leader.go#L307

Added line #L307 was not covered by tests
handler.rd.JSON(w, http.StatusInternalServerError, err.Error())
return
}
Expand Down
59 changes: 59 additions & 0 deletions tests/pdctl/scheduler/scheduler_test.go
Original file line number Diff line number Diff line change
Expand Up @@ -20,6 +20,7 @@ import (
"testing"
"time"

"github.com/pingcap/failpoint"
"github.com/pingcap/kvproto/pkg/metapb"
"github.com/stretchr/testify/require"
"github.com/tikv/pd/pkg/testutil"
Expand Down Expand Up @@ -480,3 +481,61 @@ func TestScheduler(t *testing.T) {
echo = mustExec([]string{"-u", pdAddr, "scheduler", "remove", "split-bucket-scheduler"}, nil)
re.Contains(echo, "Success!")
}

func TestEvictLeaderScheduler(t *testing.T) {
re := require.New(t)
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
cluster, err := tests.NewTestCluster(ctx, 1)
re.NoError(err)
defer cluster.Destroy()
err = cluster.RunInitialServers()
re.NoError(err)
cluster.WaitLeader()
pdAddr := cluster.GetConfig().GetClientURL()
cmd := pdctlCmd.GetRootCmd()

stores := []*metapb.Store{
{
Id: 1,
State: metapb.StoreState_Up,
LastHeartbeat: time.Now().UnixNano(),
},
{
Id: 2,
State: metapb.StoreState_Up,
LastHeartbeat: time.Now().UnixNano(),
},
{
Id: 3,
State: metapb.StoreState_Up,
LastHeartbeat: time.Now().UnixNano(),
},
{
Id: 4,
State: metapb.StoreState_Up,
LastHeartbeat: time.Now().UnixNano(),
},
}
leaderServer := cluster.GetServer(cluster.GetLeader())
re.NoError(leaderServer.BootstrapCluster())
for _, store := range stores {
pdctl.MustPutStore(re, leaderServer.GetServer(), store)
}

pdctl.MustPutRegion(re, cluster, 1, 1, []byte("a"), []byte("b"))
output, err := pdctl.ExecuteCommand(cmd, []string{"-u", pdAddr, "scheduler", "add", "evict-leader-scheduler", "2"}...)
re.NoError(err)
re.Contains(string(output), "Success!")
failpoint.Enable("github.com/tikv/pd/server/schedulers/buildWithArgsErr", "return(true)")
output, err = pdctl.ExecuteCommand(cmd, []string{"-u", pdAddr, "scheduler", "add", "evict-leader-scheduler", "1"}...)
re.NoError(err)
re.Contains(string(output), "fail to build with args")
failpoint.Disable("github.com/tikv/pd/server/schedulers/buildWithArgsErr")
output, err = pdctl.ExecuteCommand(cmd, []string{"-u", pdAddr, "scheduler", "remove", "evict-leader-scheduler"}...)
re.NoError(err)
re.Contains(string(output), "Success!")
output, err = pdctl.ExecuteCommand(cmd, []string{"-u", pdAddr, "scheduler", "add", "evict-leader-scheduler", "1"}...)
re.NoError(err)
re.Contains(string(output), "Success!")
}
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