178 lines
3.6 KiB
Go
178 lines
3.6 KiB
Go
// Copyright 2015 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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// See the License for the specific language governing permissions and
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// limitations under the License.
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package util
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import (
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"fmt"
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"testing"
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. "github.com/pingcap/check"
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"github.com/pingcap/tidb/kv"
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"github.com/pingcap/tidb/store/localstore"
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"github.com/pingcap/tidb/store/localstore/goleveldb"
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"github.com/pingcap/tidb/util/codec"
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)
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const (
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startIndex = 0
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testCount = 12
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testPow = 10
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)
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func TestT(t *testing.T) {
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TestingT(t)
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}
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var _ = Suite(&testPrefixSuite{})
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type testPrefixSuite struct {
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s kv.Storage
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}
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func (s *testPrefixSuite) SetUpSuite(c *C) {
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path := "memory:"
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d := localstore.Driver{
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Driver: goleveldb.MemoryDriver{},
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}
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store, err := d.Open(path)
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c.Assert(err, IsNil)
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s.s = store
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// must in cache
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cacheS, _ := d.Open(path)
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c.Assert(cacheS, Equals, store)
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}
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func (s *testPrefixSuite) TearDownSuite(c *C) {
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err := s.s.Close()
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c.Assert(err, IsNil)
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}
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func encodeInt(n int) []byte {
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return []byte(fmt.Sprintf("%d", n))
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}
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type MockContext struct {
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prefix int
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values map[fmt.Stringer]interface{}
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kv.Storage
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txn kv.Transaction
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}
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func (c *MockContext) SetValue(key fmt.Stringer, value interface{}) {
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c.values[key] = value
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}
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func (c *MockContext) Value(key fmt.Stringer) interface{} {
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value := c.values[key]
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return value
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}
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func (c *MockContext) ClearValue(key fmt.Stringer) {
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delete(c.values, key)
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}
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func (c *MockContext) GetTxn(forceNew bool) (kv.Transaction, error) {
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var err error
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c.txn, err = c.Begin()
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if err != nil {
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return nil, err
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}
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return c.txn, nil
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}
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func (c *MockContext) fillTxn() error {
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if c.txn == nil {
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return nil
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}
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var err error
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for i := startIndex; i < testCount; i++ {
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val := encodeInt(i + (c.prefix * testPow))
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err = c.txn.Set(val, val)
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if err != nil {
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return err
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}
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}
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return nil
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}
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func (c *MockContext) FinishTxn(rollback bool) error {
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if c.txn == nil {
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return nil
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}
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return c.txn.Commit()
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}
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func (s *testPrefixSuite) TestPrefix(c *C) {
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ctx := &MockContext{10000000, make(map[fmt.Stringer]interface{}), s.s, nil}
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ctx.fillTxn()
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err := DelKeyWithPrefix(ctx, string(encodeInt(ctx.prefix)))
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c.Assert(err, IsNil)
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err = ctx.FinishTxn(false)
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c.Assert(err, IsNil)
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txn, err := s.s.Begin()
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c.Assert(err, IsNil)
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str := "key100jfowi878230"
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err = txn.Set([]byte(str), []byte("val32dfaskli384757^*&%^"))
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c.Assert(err, IsNil)
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err = ScanMetaWithPrefix(txn, str, func([]byte, []byte) bool {
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return true
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})
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c.Assert(err, IsNil)
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err = txn.Commit()
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c.Assert(err, IsNil)
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}
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func (s *testPrefixSuite) TestCode(c *C) {
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table := []struct {
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prefix string
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h int64
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ID int64
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}{
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{"123abc##!@#((_)((**&&^^%$", 1234567890, 0},
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{"", 1, 0},
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{"", -1, 0},
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{"", -1, 1},
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}
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for _, t := range table {
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b := EncodeRecordKey(t.prefix, t.h, t.ID)
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handle, err := DecodeHandleFromRowKey(string(b))
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c.Assert(err, IsNil)
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c.Assert(handle, Equals, t.h)
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}
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b1 := EncodeRecordKey("aa", 1, 0)
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b2 := EncodeRecordKey("aa", 1, 1)
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c.Logf("%#v, %#v", b2, b1)
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_, err := codec.StripEnd(b1)
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c.Assert(err, IsNil)
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}
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func (s *testPrefixSuite) TestPrefixFilter(c *C) {
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rowKey := []byte("test@#$%l(le[0]..prefix) 2uio")
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rowKey[8] = 0x00
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rowKey[9] = 0x00
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f := RowKeyPrefixFilter(rowKey)
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b := f(append(rowKey, []byte("akjdf3*(34")...))
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c.Assert(b, IsFalse)
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buf := f([]byte("sjfkdlsaf"))
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c.Assert(buf, IsTrue)
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}
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