You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
186 lines
4.9 KiB
186 lines
4.9 KiB
// Copyright 2016 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 mocktikv
|
|
|
|
import (
|
|
"context"
|
|
"math"
|
|
"sync"
|
|
"time"
|
|
|
|
"github.com/pingcap/errors"
|
|
"github.com/pingcap/kvproto/pkg/metapb"
|
|
"github.com/pingcap/kvproto/pkg/pdpb"
|
|
pd "github.com/tikv/pd/client"
|
|
)
|
|
|
|
// Use global variables to prevent pdClients from creating duplicate timestamps.
|
|
var tsMu = struct {
|
|
sync.Mutex
|
|
physicalTS int64
|
|
logicalTS int64
|
|
}{}
|
|
|
|
type pdClient struct {
|
|
cluster *Cluster
|
|
// SafePoint set by `UpdateGCSafePoint`. Not to be confused with SafePointKV.
|
|
gcSafePoint uint64
|
|
// Represents the current safePoint of all services including TiDB, representing how much data they want to retain
|
|
// in GC.
|
|
serviceSafePoints map[string]uint64
|
|
gcSafePointMu sync.Mutex
|
|
}
|
|
|
|
// NewPDClient creates a mock pd.Client that uses local timestamp and meta data
|
|
// from a Cluster.
|
|
func NewPDClient(cluster *Cluster) pd.Client {
|
|
return &pdClient{
|
|
cluster: cluster,
|
|
serviceSafePoints: make(map[string]uint64),
|
|
}
|
|
}
|
|
|
|
func (c *pdClient) GetAllMembers(ctx context.Context) ([]*pdpb.Member, error) {
|
|
return nil, nil
|
|
}
|
|
|
|
func (c *pdClient) GetClusterID(ctx context.Context) uint64 {
|
|
return 1
|
|
}
|
|
|
|
func (c *pdClient) GetTS(context.Context) (int64, int64, error) {
|
|
tsMu.Lock()
|
|
defer tsMu.Unlock()
|
|
|
|
ts := time.Now().UnixNano() / int64(time.Millisecond)
|
|
if tsMu.physicalTS >= ts {
|
|
tsMu.logicalTS++
|
|
} else {
|
|
tsMu.physicalTS = ts
|
|
tsMu.logicalTS = 0
|
|
}
|
|
return tsMu.physicalTS, tsMu.logicalTS, nil
|
|
}
|
|
|
|
func (c *pdClient) GetTSAsync(ctx context.Context) pd.TSFuture {
|
|
return &mockTSFuture{c, ctx, false}
|
|
}
|
|
|
|
type mockTSFuture struct {
|
|
pdc *pdClient
|
|
ctx context.Context
|
|
used bool
|
|
}
|
|
|
|
func (m *mockTSFuture) Wait() (int64, int64, error) {
|
|
if m.used {
|
|
return 0, 0, errors.New("cannot wait tso twice")
|
|
}
|
|
m.used = true
|
|
return m.pdc.GetTS(m.ctx)
|
|
}
|
|
|
|
func (c *pdClient) GetRegion(ctx context.Context, key []byte) (*pd.Region, error) {
|
|
region, peer := c.cluster.GetRegionByKey(key)
|
|
return &pd.Region{Meta: region, Leader: peer}, nil
|
|
}
|
|
|
|
func (c *pdClient) GetPrevRegion(ctx context.Context, key []byte) (*pd.Region, error) {
|
|
region, peer := c.cluster.GetPrevRegionByKey(key)
|
|
return &pd.Region{Meta: region, Leader: peer}, nil
|
|
}
|
|
|
|
func (c *pdClient) GetRegionByID(ctx context.Context, regionID uint64) (*pd.Region, error) {
|
|
region, peer := c.cluster.GetRegionByID(regionID)
|
|
return &pd.Region{Meta: region, Leader: peer}, nil
|
|
}
|
|
|
|
func (c *pdClient) ScanRegions(ctx context.Context, startKey []byte, endKey []byte, limit int) ([]*metapb.Region, []*metapb.Peer, error) {
|
|
regions, peers := c.cluster.ScanRegions(startKey, endKey, limit)
|
|
return regions, peers, nil
|
|
}
|
|
|
|
func (c *pdClient) GetStore(ctx context.Context, storeID uint64) (*metapb.Store, error) {
|
|
select {
|
|
case <-ctx.Done():
|
|
return nil, ctx.Err()
|
|
default:
|
|
}
|
|
store := c.cluster.GetStore(storeID)
|
|
return store, nil
|
|
}
|
|
|
|
func (c *pdClient) GetAllStores(ctx context.Context, opts ...pd.GetStoreOption) ([]*metapb.Store, error) {
|
|
return c.cluster.GetAllStores(), nil
|
|
}
|
|
|
|
func (c *pdClient) UpdateGCSafePoint(ctx context.Context, safePoint uint64) (uint64, error) {
|
|
c.gcSafePointMu.Lock()
|
|
defer c.gcSafePointMu.Unlock()
|
|
|
|
if safePoint > c.gcSafePoint {
|
|
c.gcSafePoint = safePoint
|
|
}
|
|
return c.gcSafePoint, nil
|
|
}
|
|
|
|
func (c *pdClient) UpdateServiceGCSafePoint(ctx context.Context, serviceID string, ttl int64, safePoint uint64) (uint64, error) {
|
|
c.gcSafePointMu.Lock()
|
|
defer c.gcSafePointMu.Unlock()
|
|
|
|
if ttl == 0 {
|
|
delete(c.serviceSafePoints, serviceID)
|
|
} else {
|
|
var minSafePoint uint64 = math.MaxUint64
|
|
for _, ssp := range c.serviceSafePoints {
|
|
if ssp < minSafePoint {
|
|
minSafePoint = ssp
|
|
}
|
|
}
|
|
|
|
if len(c.serviceSafePoints) == 0 || minSafePoint <= safePoint {
|
|
c.serviceSafePoints[serviceID] = safePoint
|
|
}
|
|
}
|
|
|
|
// The minSafePoint may have changed. Reload it.
|
|
var minSafePoint uint64 = math.MaxUint64
|
|
for _, ssp := range c.serviceSafePoints {
|
|
if ssp < minSafePoint {
|
|
minSafePoint = ssp
|
|
}
|
|
}
|
|
return minSafePoint, nil
|
|
}
|
|
|
|
func (c *pdClient) Close() {
|
|
}
|
|
|
|
func (c *pdClient) ScatterRegion(ctx context.Context, regionID uint64) error {
|
|
return nil
|
|
}
|
|
|
|
func (c *pdClient) ScatterRegionWithOption(ctx context.Context, regionID uint64, opts ...pd.ScatterRegionOption) error {
|
|
return nil
|
|
}
|
|
|
|
func (c *pdClient) GetOperator(ctx context.Context, regionID uint64) (*pdpb.GetOperatorResponse, error) {
|
|
return &pdpb.GetOperatorResponse{Status: pdpb.OperatorStatus_SUCCESS}, nil
|
|
}
|
|
|
|
func (c *pdClient) GetMemberInfo(ctx context.Context) ([]*pdpb.Member, error) {
|
|
return nil, nil
|
|
}
|
|
|
|
func (c *pdClient) GetLeaderAddr() string { return "mockpd" }
|
|
|