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id_test.go
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id_test.go
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// 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 server
import (
"context"
"sync"
"github.com/coreos/etcd/clientv3"
. "github.com/pingcap/check"
"github.com/pingcap/kvproto/pkg/pdpb"
)
var _ = Suite(&testAllocIDSuite{})
type testAllocIDSuite struct {
client *clientv3.Client
alloc *idAllocator
svr *Server
cleanup cleanUpFunc
grpcPDClient pdpb.PDClient
}
func (s *testAllocIDSuite) SetUpSuite(c *C) {
s.svr, s.cleanup = newTestServer(c)
err := s.svr.Run()
c.Assert(err, IsNil)
s.client = s.svr.client
s.alloc = s.svr.idAlloc
mustWaitLeader(c, []*Server{s.svr})
s.grpcPDClient = mustNewGrpcClient(c, s.svr.GetAddr())
}
func (s *testAllocIDSuite) TearDownSuite(c *C) {
s.cleanup()
}
func (s *testAllocIDSuite) TestID(c *C) {
mustGetLeader(c, s.client, s.svr.getLeaderPath())
var last uint64
for i := uint64(0); i < allocStep; i++ {
id, err := s.alloc.Alloc()
c.Assert(err, IsNil)
c.Assert(id, Greater, last)
last = id
}
var wg sync.WaitGroup
var m sync.Mutex
ids := make(map[uint64]struct{})
for i := 0; i < 10; i++ {
wg.Add(1)
go func() {
defer wg.Done()
for i := 0; i < 200; i++ {
id, err := s.alloc.Alloc()
c.Assert(err, IsNil)
m.Lock()
_, ok := ids[id]
ids[id] = struct{}{}
m.Unlock()
c.Assert(ok, IsFalse)
}
}()
}
wg.Wait()
}
func (s *testAllocIDSuite) TestCommand(c *C) {
req := &pdpb.AllocIDRequest{
Header: newRequestHeader(s.svr.clusterID),
}
var last uint64
for i := uint64(0); i < 2*allocStep; i++ {
resp, err := s.grpcPDClient.AllocID(context.Background(), req)
c.Assert(err, IsNil)
c.Assert(resp.GetId(), Greater, last)
last = resp.GetId()
}
}