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gc.go
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gc.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.
// Test backup with exceeding GC safe point.
package main
import (
"context"
"flag"
"time"
"github.com/pingcap/log"
"github.com/pingcap/tidb/store/tikv/oracle"
pd "github.com/tikv/pd/client"
"go.uber.org/zap"
)
var (
ca = flag.String("ca", "", "CA certificate path for TLS connection")
cert = flag.String("cert", "", "certificate path for TLS connection")
key = flag.String("key", "", "private key path for TLS connection")
pdAddr = flag.String("pd", "", "PD address")
gcOffset = flag.Duration("gc-offset", time.Second*10,
"Set GC safe point to current time - gc-offset, default: 10s")
updateService = flag.Bool("update-service", false, "use new service to update min SafePoint")
)
func main() {
flag.Parse()
if *pdAddr == "" {
log.Panic("pd address is empty")
}
if *gcOffset == time.Duration(0) {
log.Panic("zero gc-offset is not allowed")
}
timeout := time.Second * 10
ctx, cancel := context.WithTimeout(context.Background(), timeout)
defer cancel()
pdclient, err := pd.NewClientWithContext(ctx, []string{*pdAddr}, pd.SecurityOption{
CAPath: *ca,
CertPath: *cert,
KeyPath: *key,
})
if err != nil {
log.Panic("create pd client failed", zap.Error(err))
}
p, l, err := pdclient.GetTS(ctx)
if err != nil {
log.Panic("get ts failed", zap.Error(err))
}
now := oracle.ComposeTS(p, l)
nowMinusOffset := oracle.GetTimeFromTS(now).Add(-*gcOffset)
newSP := oracle.ComposeTS(oracle.GetPhysical(nowMinusOffset), 0)
if *updateService {
_, err = pdclient.UpdateServiceGCSafePoint(ctx, "br", 300, newSP)
if err != nil {
log.Panic("update service safe point failed", zap.Error(err))
}
log.Info("update service GC safe point", zap.Uint64("SP", newSP), zap.Uint64("now", now))
} else {
_, err = pdclient.UpdateGCSafePoint(ctx, newSP)
if err != nil {
log.Panic("update safe point failed", zap.Error(err))
}
log.Info("update GC safe point", zap.Uint64("SP", newSP), zap.Uint64("now", now))
}
}