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leader_test.go
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leader_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"
"time"
. "github.com/pingcap/check"
"github.com/pingcap/kvproto/pkg/pdpb"
)
var _ = Suite(&testGetLeaderSuite{})
type testGetLeaderSuite struct {
svr *Server
wg sync.WaitGroup
done chan bool
}
func (s *testGetLeaderSuite) SetUpSuite(c *C) {
cfg := NewTestSingleConfig()
// Send requests before server has started.
s.wg.Add(1)
s.done = make(chan bool)
go s.sendRequest(c, cfg.ClientUrls)
time.Sleep(100 * time.Millisecond)
svr, err := CreateServer(cfg, nil)
c.Assert(err, IsNil)
err = svr.Run()
c.Assert(err, IsNil)
s.svr = svr
}
func (s *testGetLeaderSuite) TearDownSuite(c *C) {
s.svr.Close()
cleanServer(s.svr.cfg)
}
func (s *testGetLeaderSuite) TestGetLeader(c *C) {
mustWaitLeader(c, []*Server{s.svr})
leader, err := s.svr.GetLeader()
c.Assert(err, IsNil)
c.Assert(leader, NotNil)
s.done <- true
s.wg.Wait()
}
func (s *testGetLeaderSuite) sendRequest(c *C, addr string) {
defer s.wg.Done()
req := &pdpb.AllocIDRequest{
Header: newRequestHeader(0),
}
for {
select {
case <-s.done:
return
default:
// We don't need to check the response and error,
// just make sure the server will not panic.
grpcPDClient := mustNewGrpcClient(c, addr)
if grpcPDClient != nil {
grpcPDClient.AllocID(context.Background(), req)
}
}
time.Sleep(10 * time.Millisecond)
}
}