mirror of https://github.com/tikv/client-go.git
107 lines
3.6 KiB
Go
107 lines
3.6 KiB
Go
// Copyright 2021 TiKV Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// NOTE: The code in this file is based on code from the
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// TiDB project, licensed under the Apache License v 2.0
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//
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// https://github.com/pingcap/tidb/tree/cc5e161ac06827589c4966674597c137cc9e809c/store/tikv/oracle/oracles/pd_test.go
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//
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// Copyright 2019 PingCAP, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package oracles_test
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import (
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"context"
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"math"
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"testing"
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"time"
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"github.com/stretchr/testify/assert"
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"github.com/tikv/client-go/v2/oracle"
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"github.com/tikv/client-go/v2/oracle/oracles"
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)
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func TestPDOracle_UntilExpired(t *testing.T) {
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lockAfter, lockExp := 10, 15
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o := oracles.NewEmptyPDOracle()
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start := time.Now()
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oracles.SetEmptyPDOracleLastTs(o, oracle.GoTimeToTS(start))
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lockTs := oracle.GoTimeToTS(start.Add(time.Duration(lockAfter)*time.Millisecond)) + 1
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waitTs := o.UntilExpired(lockTs, uint64(lockExp), &oracle.Option{TxnScope: oracle.GlobalTxnScope})
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assert.Equal(t, int64(lockAfter+lockExp), waitTs)
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}
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func TestPdOracle_GetStaleTimestamp(t *testing.T) {
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o := oracles.NewEmptyPDOracle()
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start := time.Now()
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oracles.SetEmptyPDOracleLastTs(o, oracle.GoTimeToTS(start))
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ts, err := o.GetStaleTimestamp(context.Background(), oracle.GlobalTxnScope, 10)
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assert.Nil(t, err)
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assert.WithinDuration(t, start.Add(-10*time.Second), oracle.GetTimeFromTS(ts), 2*time.Second)
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_, err = o.GetStaleTimestamp(context.Background(), oracle.GlobalTxnScope, 1e12)
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assert.NotNil(t, err)
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assert.Regexp(t, ".*invalid prevSecond.*", err.Error())
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_, err = o.GetStaleTimestamp(context.Background(), oracle.GlobalTxnScope, math.MaxUint64)
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assert.NotNil(t, err)
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assert.Regexp(t, ".*invalid prevSecond.*", err.Error())
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}
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func TestNonFutureStaleTSO(t *testing.T) {
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o := oracles.NewEmptyPDOracle()
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oracles.SetEmptyPDOracleLastTs(o, oracle.GoTimeToTS(time.Now()))
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for i := 0; i < 100; i++ {
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time.Sleep(10 * time.Millisecond)
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now := time.Now()
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upperBound := now.Add(5 * time.Millisecond) // allow 5ms time drift
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closeCh := make(chan struct{})
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go func() {
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time.Sleep(100 * time.Microsecond)
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oracles.SetEmptyPDOracleLastTs(o, oracle.GoTimeToTS(now))
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close(closeCh)
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}()
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CHECK:
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for {
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select {
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case <-closeCh:
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break CHECK
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default:
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ts, err := o.GetStaleTimestamp(context.Background(), oracle.GlobalTxnScope, 0)
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assert.Nil(t, err)
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staleTime := oracle.GetTimeFromTS(ts)
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if staleTime.After(upperBound) && time.Since(now) < time.Millisecond /* only check staleTime within 1ms */ {
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assert.Less(t, staleTime, upperBound, i)
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t.FailNow()
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}
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}
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}
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}
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}
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