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recovery_env_test.go
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recovery_env_test.go
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// Copyright 2021 The Cockroach Authors.
//
// Use of this software is governed by the Business Source License
// included in the file licenses/BSL.txt.
//
// As of the Change Date specified in that file, in accordance with
// the Business Source License, use of this software will be governed
// by the Apache License, Version 2.0, included in the file
// licenses/APL.txt.
package loqrecovery
import (
"context"
"fmt"
"sort"
"strconv"
"strings"
"testing"
"time"
"github.com/cockroachdb/cockroach/pkg/keys"
"github.com/cockroachdb/cockroach/pkg/kv/kvserver"
"github.com/cockroachdb/cockroach/pkg/kv/kvserver/kvserverbase"
"github.com/cockroachdb/cockroach/pkg/kv/kvserver/kvserverpb"
"github.com/cockroachdb/cockroach/pkg/kv/kvserver/loqrecovery/loqrecoverypb"
"github.com/cockroachdb/cockroach/pkg/kv/kvserver/stateloader"
"github.com/cockroachdb/cockroach/pkg/roachpb"
"github.com/cockroachdb/cockroach/pkg/storage"
"github.com/cockroachdb/cockroach/pkg/storage/enginepb"
"github.com/cockroachdb/cockroach/pkg/util/hlc"
"github.com/cockroachdb/cockroach/pkg/util/keysutil"
"github.com/cockroachdb/cockroach/pkg/util/protoutil"
"github.com/cockroachdb/cockroach/pkg/util/timeutil"
"github.com/cockroachdb/cockroach/pkg/util/uuid"
"github.com/cockroachdb/datadriven"
"github.com/cockroachdb/errors"
"go.etcd.io/etcd/raft/v3/raftpb"
"gopkg.in/yaml.v2"
)
// Range info used for test data to avoid providing unnecessary fields that are
// not used in replica removal.
type testReplicaInfo struct {
// Replica location.
NodeID roachpb.NodeID `yaml:"NodeID"`
StoreID roachpb.StoreID `yaml:"StoreID"`
// Descriptor as seen by replica.
RangeID roachpb.RangeID `yaml:"RangeID"`
StartKey string `yaml:"StartKey"`
EndKey string `yaml:"EndKey"`
Replicas []replicaDescriptorView `yaml:"Replicas,flow"`
Generation roachpb.RangeGeneration `yaml:"Generation,omitempty"`
// Raft state.
RangeAppliedIndex uint64 `yaml:"RangeAppliedIndex"`
RaftCommittedIndex uint64 `yaml:"RaftCommittedIndex"`
DescriptorUpdates []testReplicaDescriptorChange `yaml:"DescriptorUpdates,flow,omitempty"`
// TODO(oleg): Add ability to have descriptor intents in the store for testing purposes
}
// Raft log descriptor changes.
type testReplicaDescriptorChange struct {
// Change type determines which fields has to be set here. While this could be
// error-prone, we use this for the sake of test spec brevity. Otherwise
// we will need nested structures which would introduce clutter.
ChangeType loqrecoverypb.DescriptorChangeType `yaml:"Type"`
// Replicas are used to define descriptor change (Type = 2).
Replicas []replicaDescriptorView `yaml:"Replicas,flow,omitempty"`
// RangeID, StartKey and EndKey define right-hand side of split and merge
// operations (Type = 0 or Type = 1).
RangeID roachpb.RangeID `yaml:"RangeID,omitempty"`
StartKey string `yaml:"StartKey,omitempty"`
EndKey string `yaml:"EndKey,omitempty"`
}
type storeView struct {
NodeID roachpb.NodeID `yaml:"NodeID"`
StoreID roachpb.StoreID `yaml:"StoreID"`
Descriptors []storeDescriptorView `yaml:"Descriptors"`
LocalData []localDataView `yaml:"LocalData"`
}
// storeDescriptorView contains important fields from the range
// descriptor that tests want to assert against when diffing outputs.
// It is used as a meaningful yaml serializable format since using
// default indented json produces incomprehensible diffs.
type storeDescriptorView struct {
// Descriptor as seen by replica
RangeID roachpb.RangeID `yaml:"RangeID"`
StartKey string `yaml:"StartKey"`
Replicas []descriptorViewWrapper `yaml:"Replicas"`
}
// descriptorViewWrapper is a wrapper type to customize representation of
// replicas slice elements in test expectations.
type descriptorViewWrapper struct {
Replica replicaDescriptorView `yaml:"Replica,flow"`
}
// replicaDescriptorView contains a copy of roachpb.ReplicaDescriptor
// for the purpose of yaml representation and to avoid leaking test
// specific code into production.
type replicaDescriptorView struct {
NodeID roachpb.NodeID `yaml:"NodeID"`
StoreID roachpb.StoreID `yaml:"StoreID"`
ReplicaID roachpb.ReplicaID `yaml:"ReplicaID"`
ReplicaType *roachpb.ReplicaType `yaml:"ReplicaType,omitempty"`
}
func (r replicaDescriptorView) asReplicaDescriptor() roachpb.ReplicaDescriptor {
return roachpb.ReplicaDescriptor{
NodeID: r.NodeID,
StoreID: r.StoreID,
ReplicaID: r.ReplicaID,
Type: r.ReplicaType,
}
}
// localDataView contains interesting local store data for each range.
type localDataView struct {
RangeID roachpb.RangeID `yaml:"RangeID"`
RaftReplicaID int `yaml:"RaftReplicaID"`
}
// Store with its owning NodeID for easier grouping by owning nodes.
type wrappedStore struct {
engine storage.Engine
nodeID roachpb.NodeID
}
type quorumRecoveryEnv struct {
// Stores with data
stores map[roachpb.StoreID]wrappedStore
// Collected info from nodes
replicas []loqrecoverypb.NodeReplicaInfo
// plan to update replicas
plan loqrecoverypb.ReplicaUpdatePlan
}
func (e *quorumRecoveryEnv) Handle(t *testing.T, d datadriven.TestData) string {
var err error
var out string
switch d.Cmd {
case "replication-data":
// Populate in-mem engines with data.
out = e.handleReplicationData(t, d)
case "collect-replica-info":
// Collect one or more range info "files" from stores.
out, err = e.handleCollectReplicas(t, d)
case "make-plan":
// Make plan out of specified replica info "files".
out, err = e.handleMakePlan(t, d)
case "dump-store":
// Dump the content of the store (all descriptors) for verification.
out = e.handleDumpStore(t, d)
case "apply-plan":
out, err = e.handleApplyPlan(t, d)
case "dump-events":
out, err = e.dumpRecoveryEvents(t, d)
default:
t.Fatalf("%s: unknown command %s", d.Pos, d.Cmd)
}
if err != nil {
// This is a special case of error. Coverage errors provide properly
// formatted report as a separate function to better separate processing
// from presentation.
details := errors.GetAllDetails(err)
if len(details) > 0 {
return fmt.Sprintf("ERROR: %s\n%s", err.Error(), strings.Join(details, "\n"))
}
return fmt.Sprintf("ERROR: %s", err.Error())
}
if len(out) > 0 {
return out
}
return "ok"
}
func (e *quorumRecoveryEnv) handleReplicationData(t *testing.T, d datadriven.TestData) string {
ctx := context.Background()
clock := hlc.NewClock(hlc.UnixNano, time.Millisecond*100)
// Close existing stores in case we have multiple use cases within a data file.
e.cleanupStores()
e.stores = make(map[roachpb.StoreID]wrappedStore)
// Load yaml from data into local range info.
var replicaData []testReplicaInfo
err := yaml.UnmarshalStrict([]byte(d.Input), &replicaData)
if err != nil {
t.Fatalf("failed to unmarshal test replica data: %v", err)
}
for _, replica := range replicaData {
// If node id is not explicitly supplied, use storeID as sensible shortcut.
if replica.NodeID == roachpb.NodeID(0) {
replica.NodeID = roachpb.NodeID(replica.StoreID)
}
key, desc, replicaState, hardState, raftLog := buildReplicaDescriptorFromTestData(t, replica)
eng := e.getOrCreateStore(ctx, t, replica.StoreID, replica.NodeID)
if err = storage.MVCCPutProto(ctx, eng, nil, key, clock.Now(), nil, /* txn */
&desc); err != nil {
t.Fatalf("failed to write range descriptor into store: %v", err)
}
sl := stateloader.Make(replica.RangeID)
if _, err := sl.Save(ctx, eng, replicaState); err != nil {
t.Fatalf("failed to save raft replica state into store: %v", err)
}
if err := sl.SetHardState(ctx, eng, hardState); err != nil {
t.Fatalf("failed to save raft hard state: %v", err)
}
for i, entry := range raftLog {
value, err := protoutil.Marshal(&entry)
if err != nil {
t.Fatalf("failed to serialize metadata entry for raft log")
}
if err := eng.PutUnversioned(keys.RaftLogKey(replica.RangeID,
uint64(i)+hardState.Commit+1), value); err != nil {
t.Fatalf("failed to insert raft log entry into store: %s", err)
}
}
}
return "ok"
}
func buildReplicaDescriptorFromTestData(
t *testing.T, replica testReplicaInfo,
) (
roachpb.Key,
roachpb.RangeDescriptor,
kvserverpb.ReplicaState,
raftpb.HardState,
[]enginepb.MVCCMetadata,
) {
clock := hlc.NewClock(hlc.UnixNano, time.Millisecond*100)
startKey := parsePrettyKey(t, replica.StartKey)
endKey := parsePrettyKey(t, replica.EndKey)
key := keys.RangeDescriptorKey(startKey)
var replicas []roachpb.ReplicaDescriptor
maxReplicaID := replica.Replicas[0].ReplicaID
for _, r := range replica.Replicas {
if r.ReplicaID > maxReplicaID {
maxReplicaID = r.ReplicaID
}
replicas = append(replicas, r.asReplicaDescriptor())
}
if replica.Generation == 0 {
replica.Generation = roachpb.RangeGeneration(maxReplicaID)
}
desc := roachpb.RangeDescriptor{
RangeID: replica.RangeID,
StartKey: startKey,
EndKey: endKey,
InternalReplicas: replicas,
NextReplicaID: maxReplicaID + 1,
Generation: replica.Generation,
DeprecatedGenerationComparable: nil,
StickyBit: nil,
}
lease := roachpb.Lease{
Start: clock.Now().Add(5*time.Minute.Nanoseconds(), 0).UnsafeToClockTimestamp(),
Expiration: nil,
Replica: desc.InternalReplicas[0],
ProposedTS: nil,
Epoch: 0,
Sequence: 0,
AcquisitionType: 0,
}
replicaState := kvserverpb.ReplicaState{
RaftAppliedIndex: replica.RangeAppliedIndex,
LeaseAppliedIndex: 0,
Desc: &desc,
Lease: &lease,
TruncatedState: &roachpb.RaftTruncatedState{
Index: 1,
Term: 1,
},
GCThreshold: &hlc.Timestamp{},
Version: nil,
Stats: &enginepb.MVCCStats{},
RaftClosedTimestamp: clock.Now().Add(-30*time.Second.Nanoseconds(), 0),
}
hardState := raftpb.HardState{
Term: 0,
Vote: 0,
Commit: replica.RaftCommittedIndex,
}
var raftLog []enginepb.MVCCMetadata
for i, u := range replica.DescriptorUpdates {
entry := raftLogFromPendingDescriptorUpdate(t, replica, u, desc, uint64(i))
raftLog = append(raftLog, enginepb.MVCCMetadata{RawBytes: entry.RawBytes})
}
return key, desc, replicaState, hardState, raftLog
}
func raftLogFromPendingDescriptorUpdate(
t *testing.T,
replica testReplicaInfo,
update testReplicaDescriptorChange,
desc roachpb.RangeDescriptor,
entryIndex uint64,
) roachpb.Value {
// We mimic EndTxn messages with commit triggers here. We don't construct
// full batches with descriptor updates as we only need data that would be
// used by collect stage. Actual data extraction from raft log is tested
// elsewhere using test cluster.
r := kvserverpb.ReplicatedEvalResult{}
switch update.ChangeType {
case loqrecoverypb.DescriptorChangeType_Split:
r.Split = &kvserverpb.Split{
SplitTrigger: roachpb.SplitTrigger{
RightDesc: roachpb.RangeDescriptor{
RangeID: update.RangeID,
StartKey: roachpb.RKey(update.StartKey),
EndKey: roachpb.RKey(update.EndKey),
},
},
}
case loqrecoverypb.DescriptorChangeType_Merge:
r.Merge = &kvserverpb.Merge{
MergeTrigger: roachpb.MergeTrigger{
RightDesc: roachpb.RangeDescriptor{
RangeID: update.RangeID,
StartKey: roachpb.RKey(update.StartKey),
EndKey: roachpb.RKey(update.EndKey),
},
},
}
case loqrecoverypb.DescriptorChangeType_ReplicaChange:
var newReplicas []roachpb.ReplicaDescriptor
for _, r := range update.Replicas {
newReplicas = append(newReplicas, r.asReplicaDescriptor())
}
r.ChangeReplicas = &kvserverpb.ChangeReplicas{
ChangeReplicasTrigger: roachpb.ChangeReplicasTrigger{
Desc: &roachpb.RangeDescriptor{
RangeID: desc.RangeID,
InternalReplicas: newReplicas,
},
},
}
}
raftCmd := kvserverpb.RaftCommand{ReplicatedEvalResult: r}
out, err := protoutil.Marshal(&raftCmd)
if err != nil {
t.Fatalf("failed to serialize raftCommand: %v", err)
}
data := kvserverbase.EncodeTestRaftCommand(
out, kvserverbase.CmdIDKey(fmt.Sprintf("%08d", entryIndex)))
ent := raftpb.Entry{
Term: 1,
Index: replica.RaftCommittedIndex + entryIndex,
Type: raftpb.EntryNormal,
Data: data,
}
var value roachpb.Value
if err := value.SetProto(&ent); err != nil {
t.Fatalf("can't construct raft entry from test data: %s", err)
}
return value
}
func parsePrettyKey(t *testing.T, pretty string) roachpb.RKey {
scanner := keysutil.MakePrettyScanner(nil /* tableParser */)
key, err := scanner.Scan(pretty)
if err != nil {
t.Fatalf("failed to parse key %s: %v", pretty, err)
}
return roachpb.RKey(key)
}
func (e *quorumRecoveryEnv) handleMakePlan(t *testing.T, d datadriven.TestData) (string, error) {
stores := e.parseStoresArg(t, d, false /* defaultToAll */)
plan, report, err := PlanReplicas(context.Background(), e.replicas, stores)
if err != nil {
return "", err
}
err = report.Error()
var force bool
if d.HasArg("force") {
d.ScanArgs(t, "force", &force)
}
if err != nil && !force {
return "", err
}
e.plan = plan
// We only marshal actual data without container to reduce clutter.
out, err := yaml.Marshal(e.plan.Updates)
if err != nil {
t.Fatalf("failed to marshal plan into yaml for verification: %v", err)
}
return string(out), nil
}
func (e *quorumRecoveryEnv) getOrCreateStore(
ctx context.Context, t *testing.T, storeID roachpb.StoreID, nodeID roachpb.NodeID,
) storage.Engine {
wrapped := e.stores[storeID]
if wrapped.nodeID == 0 {
var err error
eng, err := storage.Open(ctx, storage.InMemory(), storage.CacheSize(1<<20 /* 1 MiB */))
if err != nil {
t.Fatalf("failed to crate in mem store: %v", err)
}
sIdent := roachpb.StoreIdent{
ClusterID: uuid.MakeV4(),
NodeID: nodeID,
StoreID: storeID,
}
if err = storage.MVCCPutProto(
context.Background(), eng, nil, keys.StoreIdentKey(), hlc.Timestamp{}, nil,
&sIdent); err != nil {
t.Fatalf("failed to populate test store ident: %v", err)
}
wrapped.engine = eng
wrapped.nodeID = nodeID
e.stores[storeID] = wrapped
}
return wrapped.engine
}
func (e *quorumRecoveryEnv) handleCollectReplicas(
t *testing.T, d datadriven.TestData,
) (string, error) {
ctx := context.Background()
stores := e.parseStoresArg(t, d, true /* defaultToAll */)
nodes := e.groupStoresByNode(t, stores)
// save collected results into environment
e.replicas = nil
for _, nodeStores := range nodes {
info, err := CollectReplicaInfo(ctx, nodeStores)
if err != nil {
return "", err
}
e.replicas = append(e.replicas, info)
}
return "ok", nil
}
func (e *quorumRecoveryEnv) groupStoresByNode(
t *testing.T, storeIDs []roachpb.StoreID,
) map[roachpb.NodeID][]storage.Engine {
nodes := make(map[roachpb.NodeID][]storage.Engine)
iterateSelectedStores(t, storeIDs, e.stores,
func(store storage.Engine, nodeID roachpb.NodeID, storeID roachpb.StoreID) {
nodes[nodeID] = append(nodes[nodeID], store)
})
return nodes
}
func (e *quorumRecoveryEnv) groupStoresByNodeStore(
t *testing.T, storeIDs []roachpb.StoreID,
) map[roachpb.NodeID]map[roachpb.StoreID]storage.Batch {
nodes := make(map[roachpb.NodeID]map[roachpb.StoreID]storage.Batch)
iterateSelectedStores(t, storeIDs, e.stores,
func(store storage.Engine, nodeID roachpb.NodeID, storeID roachpb.StoreID) {
nodeStores, ok := nodes[nodeID]
if !ok {
nodeStores = make(map[roachpb.StoreID]storage.Batch)
nodes[nodeID] = nodeStores
}
nodeStores[storeID] = store.NewBatch()
})
return nodes
}
func iterateSelectedStores(
t *testing.T,
storeIDs []roachpb.StoreID,
stores map[roachpb.StoreID]wrappedStore,
f func(store storage.Engine, nodeID roachpb.NodeID, storeID roachpb.StoreID),
) {
for _, id := range storeIDs {
wrappedStore, ok := stores[id]
if !ok {
t.Fatalf("replica info requested from store that was not populated: %d", id)
}
f(wrappedStore.engine, wrappedStore.nodeID, id)
}
}
// parseStoresArg parses StoreIDs from stores arg if available, if no arguments are set
// all available stores are returned.
// Results are returned in sorted order to allow consistent output.
func (e *quorumRecoveryEnv) parseStoresArg(
t *testing.T, d datadriven.TestData, defaultToAll bool,
) []roachpb.StoreID {
// Prepare replica info
var stores []roachpb.StoreID
if d.HasArg("stores") {
for _, arg := range d.CmdArgs {
if arg.Key == "stores" {
for _, id := range arg.Vals {
id, err := strconv.ParseInt(id, 10, 32)
if err != nil {
t.Fatalf("failed to parse store id: %v", err)
}
stores = append(stores, roachpb.StoreID(id))
}
}
}
} else {
if defaultToAll {
for id := range e.stores {
stores = append(stores, id)
}
} else {
stores = []roachpb.StoreID{}
}
}
sort.Slice(stores, func(i, j int) bool { return i < j })
return stores
}
func (e *quorumRecoveryEnv) handleDumpStore(t *testing.T, d datadriven.TestData) string {
ctx := context.Background()
stores := e.parseStoresArg(t, d, true /* defaultToAll */)
var storesView []storeView
for _, storeID := range stores {
var descriptorViews []storeDescriptorView
var localDataViews []localDataView
store := e.stores[storeID]
err := kvserver.IterateRangeDescriptorsFromDisk(ctx, store.engine,
func(desc roachpb.RangeDescriptor) error {
descriptorViews = append(descriptorViews, descriptorView(desc))
sl := stateloader.Make(desc.RangeID)
raftReplicaID, _, err := sl.LoadRaftReplicaID(ctx, store.engine)
if err != nil {
t.Fatalf("failed to load Raft replica ID: %v", err)
}
localDataViews = append(localDataViews, localDataView{
RangeID: desc.RangeID,
RaftReplicaID: int(raftReplicaID.ReplicaID),
})
return nil
})
if err != nil {
t.Fatalf("failed to make a dump of store replica data: %v", err)
}
storesView = append(storesView, storeView{
NodeID: e.stores[storeID].nodeID,
StoreID: storeID,
Descriptors: descriptorViews,
LocalData: localDataViews,
})
}
out, err := yaml.Marshal(storesView)
if err != nil {
t.Fatalf("failed to serialize range descriptors from store: %v", err)
}
return string(out)
}
func (e *quorumRecoveryEnv) handleApplyPlan(t *testing.T, d datadriven.TestData) (string, error) {
ctx := context.Background()
stores := e.parseStoresArg(t, d, true /* defaultToAll */)
nodes := e.groupStoresByNodeStore(t, stores)
updateTime := timeutil.Now()
for nodeID, stores := range nodes {
_, err := PrepareUpdateReplicas(ctx, e.plan, uuid.DefaultGenerator, updateTime, nodeID, stores)
if err != nil {
return "", err
}
if _, err := CommitReplicaChanges(stores); err != nil {
return "", err
}
}
return "ok", nil
}
func (e *quorumRecoveryEnv) cleanupStores() {
for _, store := range e.stores {
store.engine.Close()
}
e.stores = nil
}
func (e *quorumRecoveryEnv) dumpRecoveryEvents(
t *testing.T, d datadriven.TestData,
) (string, error) {
ctx := context.Background()
removeEvents := false
if d.HasArg("remove") {
d.ScanArgs(t, "remove", &removeEvents)
}
var events []string
logEvents := func(ctx context.Context, record loqrecoverypb.ReplicaRecoveryRecord) (bool, error) {
event := record.AsStructuredLog()
events = append(events, fmt.Sprintf("Updated range r%d, Key:%s, Store:s%d ReplicaID:%d",
event.RangeID, event.StartKey, event.StoreID, event.UpdatedReplicaID))
return removeEvents, nil
}
stores := e.parseStoresArg(t, d, true /* defaultToAll */)
for _, store := range stores {
if _, err := RegisterOfflineRecoveryEvents(ctx, e.stores[store].engine, logEvents); err != nil {
return "", err
}
}
return strings.Join(events, "\n"), nil
}
func descriptorView(desc roachpb.RangeDescriptor) storeDescriptorView {
var replicas []descriptorViewWrapper
for _, desc := range desc.InternalReplicas {
replicas = append(replicas, descriptorViewWrapper{replicaDescriptorView{
NodeID: desc.NodeID,
StoreID: desc.StoreID,
ReplicaID: desc.ReplicaID,
ReplicaType: desc.Type,
}})
}
return storeDescriptorView{
RangeID: desc.RangeID,
StartKey: desc.StartKey.String(),
Replicas: replicas,
}
}