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// Copyright 2018 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 domain
import (
"time"
. "github.com/pingcap/check"
"github.com/pingcap/parser/terror"
"github.com/pingcap/tidb/store/tikv"
)
func (s *testSuite) TestSchemaCheckerSimple(c *C) {
lease := 5 * time.Millisecond
validator := NewSchemaValidator(lease, nil)
checker := &SchemaChecker{SchemaValidator: validator}
// Add some schema versions and delta table IDs.
ts := uint64(time.Now().UnixNano())
validator.Update(ts, 0, 2, &tikv.RelatedSchemaChange{PhyTblIDS: []int64{1}, ActionTypes: []uint64{1}})
validator.Update(ts, 2, 4, &tikv.RelatedSchemaChange{PhyTblIDS: []int64{2}, ActionTypes: []uint64{2}})
// checker's schema version is the same as the current schema version.
checker.schemaVer = 4
_, err := checker.Check(ts)
c.Assert(err, IsNil)
// checker's schema version is less than the current schema version, and it doesn't exist in validator's items.
// checker's related table ID isn't in validator's changed table IDs.
checker.schemaVer = 2
checker.relatedTableIDs = []int64{3}
_, err = checker.Check(ts)
c.Assert(err, IsNil)
// The checker's schema version isn't in validator's items.
checker.schemaVer = 1
checker.relatedTableIDs = []int64{3}
_, err = checker.Check(ts)
c.Assert(terror.ErrorEqual(err, ErrInfoSchemaChanged), IsTrue)
// checker's related table ID is in validator's changed table IDs.
checker.relatedTableIDs = []int64{2}
_, err = checker.Check(ts)
c.Assert(terror.ErrorEqual(err, ErrInfoSchemaChanged), IsTrue)
// validator's latest schema version is expired.
time.Sleep(lease + time.Microsecond)
checker.schemaVer = 4
checker.relatedTableIDs = []int64{3}
_, err = checker.Check(ts)
c.Assert(err, IsNil)
nowTS := uint64(time.Now().UnixNano())
// Use checker.SchemaValidator.Check instead of checker.Check here because backoff make CI slow.
_, result := checker.SchemaValidator.Check(nowTS, checker.schemaVer, checker.relatedTableIDs)
c.Assert(result, Equals, ResultUnknown)
}