Example #1
0
func (s *S) SetUpTest(c *C) {
	txn.SetChaos(txn.Chaos{})
	txn.SetLogger(c)
	txn.SetDebug(true)
	s.MgoSuite.SetUpTest(c)

	s.db = s.session.DB("test")
	s.tc = s.db.C("tc")
	s.sc = s.db.C("tc.stash")
	s.accounts = s.db.C("accounts")
	s.runner = txn.NewRunner(s.tc)
}
Example #2
0
func (s *S) TestTxnQueueStashStressTest(c *C) {
	txn.SetChaos(txn.Chaos{
		SlowdownChance: 0.3,
		Slowdown:       50 * time.Millisecond,
	})
	defer txn.SetChaos(txn.Chaos{})

	// So we can run more iterations of the test in less time.
	txn.SetDebug(false)

	const runners = 10
	const inserts = 10
	const repeat = 100

	for r := 0; r < repeat; r++ {
		var wg sync.WaitGroup
		wg.Add(runners)
		for i := 0; i < runners; i++ {
			go func(i, r int) {
				defer wg.Done()

				session := s.session.New()
				defer session.Close()
				runner := txn.NewRunner(s.tc.With(session))

				for j := 0; j < inserts; j++ {
					ops := []txn.Op{{
						C:  "accounts",
						Id: fmt.Sprintf("insert-%d-%d", r, j),
						Insert: bson.M{
							"added-by": i,
						},
					}}
					err := runner.Run(ops, "", nil)
					if err != txn.ErrAborted {
						c.Check(err, IsNil)
					}
				}
			}(i, r)
		}
		wg.Wait()
	}
}
Example #3
0
func (s *S) TestTxnQueueStressTest(c *C) {
	txn.SetChaos(txn.Chaos{
		SlowdownChance: 0.3,
		Slowdown:       50 * time.Millisecond,
	})
	defer txn.SetChaos(txn.Chaos{})

	// So we can run more iterations of the test in less time.
	txn.SetDebug(false)

	err := s.accounts.Insert(M{"_id": 0, "balance": 0}, M{"_id": 1, "balance": 0})
	c.Assert(err, IsNil)

	// Run half of the operations changing account 0 and then 1,
	// and the other half in the opposite order.
	ops01 := []txn.Op{{
		C:      "accounts",
		Id:     0,
		Update: M{"$inc": M{"balance": 1}},
	}, {
		C:      "accounts",
		Id:     1,
		Update: M{"$inc": M{"balance": 1}},
	}}

	ops10 := []txn.Op{{
		C:      "accounts",
		Id:     1,
		Update: M{"$inc": M{"balance": 1}},
	}, {
		C:      "accounts",
		Id:     0,
		Update: M{"$inc": M{"balance": 1}},
	}}

	ops := [][]txn.Op{ops01, ops10}

	const runners = 4
	const changes = 1000

	var wg sync.WaitGroup
	wg.Add(runners)
	for n := 0; n < runners; n++ {
		n := n
		go func() {
			defer wg.Done()
			for i := 0; i < changes; i++ {
				err = s.runner.Run(ops[n%2], "", nil)
				c.Assert(err, IsNil)
			}
		}()
	}
	wg.Wait()

	for id := 0; id < 2; id++ {
		var account Account
		err = s.accounts.FindId(id).One(&account)
		if account.Balance != runners*changes {
			c.Errorf("Account should have balance of %d, got %d", runners*changes, account.Balance)
		}
	}
}
Example #4
0
func (s *S) TearDownTest(c *C) {
	txn.SetLogger(nil)
	txn.SetDebug(false)
}