Example #1
0
func (s *S) TestSafeInsert(c *C) {
	session, err := mgo.Mongo("localhost:40001")
	c.Assert(err, IsNil)
	defer session.Close()

	coll := session.DB("mydb").C("mycoll")

	// Insert an element with a predefined key.
	err = coll.Insert(M{"_id": 1})
	c.Assert(err, IsNil)

	mgo.ResetStats()

	// Session should be safe by default, so inserting it again must fail.
	err = coll.Insert(M{"_id": 1})
	c.Assert(err, Matches, "E11000 duplicate.*")
	c.Assert(err.(*mgo.LastError).Code, Equals, 11000)

	// It must have sent two operations (INSERT_OP + getLastError QUERY_OP)
	stats := mgo.GetStats()
	c.Assert(stats.SentOps, Equals, 2)

	mgo.ResetStats()

	// If we disable safety, though, it won't complain.
	session.SetSafe(nil)
	err = coll.Insert(M{"_id": 1})
	c.Assert(err, IsNil)

	// Must have sent a single operation this time (just the INSERT_OP)
	stats = mgo.GetStats()
	c.Assert(stats.SentOps, Equals, 1)
}
Example #2
0
func (s *S) TestPrefetching(c *C) {
	session, err := mgo.Mongo("localhost:40001")
	c.Assert(err, IsNil)
	defer session.Close()

	coll := session.DB("mydb").C("mycoll")

	docs := make([]interface{}, 200)
	for i := 0; i != 200; i++ {
		docs[i] = M{"n": i}
	}
	coll.Insert(docs...)

	// Same test three times.  Once with prefetching via query, then with the
	// default prefetching, and a third time tweaking the default settings in
	// the session.
	for testi := 0; testi != 3; testi++ {
		mgo.ResetStats()

		var iter *mgo.Iter
		var nextn int

		switch testi {
		case 0: // First, using query methods.
			iter, err = coll.Find(M{}).Prefetch(0.27).Batch(100).Iter()
			c.Assert(err, IsNil)
			nextn = 73

		case 1: // Then, the default session value.
			session.SetBatch(100)
			iter, err = coll.Find(M{}).Iter()
			c.Assert(err, IsNil)
			nextn = 75

		case 2: // Then, tweaking the session value.
			session.SetBatch(100)
			session.SetPrefetch(0.27)
			iter, err = coll.Find(M{}).Iter()
			c.Assert(err, IsNil)
			nextn = 73
		}

		result := struct{ N int }{}
		for i := 0; i != nextn; i++ {
			iter.Next(&result)
		}

		stats := mgo.GetStats()
		c.Assert(stats.ReceivedDocs, Equals, 100)

		iter.Next(&result)

		// Ping the database just to wait for the fetch above
		// to get delivered.
		session.Run("ping", M{}) // XXX Should support nil here.

		stats = mgo.GetStats()
		c.Assert(stats.ReceivedDocs, Equals, 201) // 200 + the ping result
	}
}
Example #3
0
func (s *S) SetUpTest(c *C) {
	err := run("mongo --nodb testdb/dropall.js")
	if err != nil {
		panic(err.Error())
	}
	mgo.SetLogger((*cLogger)(c))
	mgo.ResetStats()
}
Example #4
0
func (s *S) TestNewSession(c *C) {
	session, err := mgo.Mongo("localhost:40001")
	c.Assert(err, IsNil)
	defer session.Close()

	// Do a dummy operation to wait for connection.
	coll := session.DB("mydb").C("mycoll")
	err = coll.Insert(M{"_id": 1})
	c.Assert(err, IsNil)

	// Tweak safety and query settings to ensure other has copied those.
	session.SetSafe(nil)
	session.SetBatch(-1)
	other := session.New()
	defer other.Close()
	session.SetSafe(&mgo.Safe{})

	// Clone was copied while session was unsafe, so no errors.
	otherColl := other.DB("mydb").C("mycoll")
	err = otherColl.Insert(M{"_id": 1})
	c.Assert(err, IsNil)

	// Original session was made safe again.
	err = coll.Insert(M{"_id": 1})
	c.Assert(err, NotNil)

	// With New(), each session has its own socket now.
	stats := mgo.GetStats()
	c.Assert(stats.MasterConns, Equals, 2)
	c.Assert(stats.SocketsInUse, Equals, 2)

	// Ensure query parameters were cloned.
	err = otherColl.Insert(M{"_id": 2})
	c.Assert(err, IsNil)

	// Ping the database to ensure the nonce has been received already.
	c.Assert(other.Ping(), IsNil)

	mgo.ResetStats()

	iter := otherColl.Find(M{}).Iter()
	c.Assert(err, IsNil)

	m := M{}
	ok := iter.Next(m)
	c.Assert(ok, Equals, true)
	err = iter.Err()
	c.Assert(err, IsNil)

	// If Batch(-1) is in effect, a single document must have been received.
	stats = mgo.GetStats()
	c.Assert(stats.ReceivedDocs, Equals, 1)
}
Example #5
0
func (s *S) TestEnsureIndexCaching(c *C) {
	session, err := mgo.Mongo("localhost:40001")
	c.Assert(err, IsNil)
	defer session.Close()

	coll := session.DB("mydb").C("mycoll")

	err = coll.EnsureIndexKey([]string{"a"})
	c.Assert(err, IsNil)

	mgo.ResetStats()

	// Second EnsureIndex should be cached and do nothing.
	err = coll.EnsureIndexKey([]string{"a"})
	c.Assert(err, IsNil)

	stats := mgo.GetStats()
	c.Assert(stats.SentOps, Equals, 0)

	// Resetting the cache should make it contact the server again.
	session.ResetIndexCache()

	err = coll.EnsureIndexKey([]string{"a"})
	c.Assert(err, IsNil)

	stats = mgo.GetStats()
	c.Assert(stats.SentOps, Equals, 2)

	// Dropping the index should also drop the cached index key.
	err = coll.DropIndex([]string{"a"})
	c.Assert(err, IsNil)

	mgo.ResetStats()

	err = coll.EnsureIndexKey([]string{"a"})
	c.Assert(err, IsNil)

	stats = mgo.GetStats()
	c.Assert(stats.SentOps, Equals, 2)
}
Example #6
0
func (s *S) TestFindIterLimitWithBatch(c *C) {
	session, err := mgo.Mongo("localhost:40001")
	c.Assert(err, IsNil)
	defer session.Close()

	coll := session.DB("mydb").C("mycoll")

	ns := []int{40, 41, 42, 43, 44, 45, 46}
	for _, n := range ns {
		coll.Insert(M{"n": n})
	}

	// Ping the database to ensure the nonce has been received already.
	c.Assert(session.Ping(), IsNil)

	session.Refresh() // Release socket.

	mgo.ResetStats()

	query := coll.Find(M{"n": M{"$gte": 42}}).Sort(M{"$natural": 1}).Limit(3).Batch(2)
	iter, err := query.Iter()
	c.Assert(err, IsNil)

	result := struct{ N int }{}
	for i := 2; i < 5; i++ {
		err = iter.Next(&result)
		c.Assert(err, IsNil)
		c.Assert(result.N, Equals, ns[i])
		if i == 3 {
			stats := mgo.GetStats()
			c.Assert(stats.ReceivedDocs, Equals, 2)
		}
	}

	err = iter.Next(&result)
	c.Assert(err == mgo.NotFound, Equals, true)

	session.Refresh() // Release socket.

	stats := mgo.GetStats()
	c.Assert(stats.SentOps, Equals, 2)     // 1*QUERY_OP + 1*GET_MORE_OP
	c.Assert(stats.ReceivedOps, Equals, 2) // and its REPLY_OPs
	c.Assert(stats.ReceivedDocs, Equals, 3)
	c.Assert(stats.SocketsInUse, Equals, 0)
}
Example #7
0
func (s *S) TestPing(c *C) {
	session, err := mgo.Mongo("localhost:40001")
	c.Assert(err, IsNil)
	defer session.Close()

	// Just ensure the nonce has been received.
	result := struct{}{}
	err = session.Run("ping", &result)

	mgo.ResetStats()

	err = session.Ping()
	c.Assert(err, IsNil)

	// Pretty boring.
	stats := mgo.GetStats()
	c.Assert(stats.SentOps, Equals, 1)
	c.Assert(stats.ReceivedOps, Equals, 1)
}
Example #8
0
func (s *S) TestFindForOnIter(c *C) {
	session, err := mgo.Mongo("localhost:40001")
	c.Assert(err, IsNil)
	defer session.Close()

	coll := session.DB("mydb").C("mycoll")

	ns := []int{40, 41, 42, 43, 44, 45, 46}
	for _, n := range ns {
		coll.Insert(M{"n": n})
	}

	session.Refresh() // Release socket.

	mgo.ResetStats()

	query := coll.Find(M{"n": M{"$gte": 42}}).Sort(M{"$natural": 1}).Prefetch(0).Batch(2)
	iter, err := query.Iter()
	c.Assert(err, IsNil)

	i := 2
	var result *struct{ N int }
	err = iter.For(&result, func() os.Error {
		c.Assert(i < 7, Equals, true)
		c.Assert(result.N, Equals, ns[i])
		if i == 1 {
			stats := mgo.GetStats()
			c.Assert(stats.ReceivedDocs, Equals, 2)
		}
		i++
		return nil
	})
	c.Assert(err, IsNil)

	session.Refresh() // Release socket.

	stats := mgo.GetStats()
	c.Assert(stats.SentOps, Equals, 3)     // 1*QUERY_OP + 2*GET_MORE_OP
	c.Assert(stats.ReceivedOps, Equals, 3) // and their REPLY_OPs.
	c.Assert(stats.ReceivedDocs, Equals, 5)
	c.Assert(stats.SocketsInUse, Equals, 0)
}
Example #9
0
func (s *S) TestFindIterLimit(c *C) {
	session, err := mgo.Mongo("localhost:40001")
	c.Assert(err, IsNil)
	defer session.Close()

	coll := session.DB("mydb").C("mycoll")

	ns := []int{40, 41, 42, 43, 44, 45, 46}
	for _, n := range ns {
		coll.Insert(M{"n": n})
	}

	session.Refresh() // Release socket.

	mgo.ResetStats()

	query := coll.Find(M{"n": M{"$gte": 42}}).Sort(M{"$natural": 1}).Limit(3)
	iter, err := query.Iter()
	c.Assert(err, IsNil)

	result := struct{ N int }{}
	for i := 2; i < 5; i++ {
		err = iter.Next(&result)
		c.Assert(err, IsNil)
		c.Assert(result.N, Equals, ns[i])
	}

	err = iter.Next(&result)
	c.Assert(err == mgo.NotFound, Equals, true)

	session.Refresh() // Release socket.

	stats := mgo.GetStats()
	c.Assert(stats.SentOps, Equals, 1)     // 1*QUERY_OP
	c.Assert(stats.ReceivedOps, Equals, 1) // and its REPLY_OP
	c.Assert(stats.ReceivedDocs, Equals, 3)
	c.Assert(stats.SocketsInUse, Equals, 0)
}
Example #10
0
// Test tailable cursors in a situation where Next never gets to sleep once
// to respect the timeout requested on Tail.
func (s *S) TestFindTailNoTimeout(c *C) {
	if *fast {
		c.Skip("-fast")
	}

	session, err := mgo.Mongo("localhost:40001")
	c.Assert(err, IsNil)
	defer session.Close()

	cresult := struct{ ErrMsg string }{}

	db := session.DB("mydb")
	err = db.Run(bson.D{{"create", "mycoll"}, {"capped", true}, {"size", 1024}}, &cresult)
	c.Assert(err, IsNil)
	c.Assert(cresult.ErrMsg, Equals, "")
	coll := db.C("mycoll")

	ns := []int{40, 41, 42, 43, 44, 45, 46}
	for _, n := range ns {
		coll.Insert(M{"n": n})
	}

	session.Refresh() // Release socket.

	mgo.ResetStats()

	query := coll.Find(M{"n": M{"$gte": 42}}).Sort(M{"$natural": 1}).Prefetch(0).Batch(2)
	iter, err := query.Tail(-1)
	c.Assert(err, IsNil)

	n := len(ns)
	result := struct{ N int }{}
	for i := 2; i != n; i++ {
		err = iter.Next(&result)
		c.Assert(err, IsNil)
		c.Assert(result.N, Equals, ns[i])
		if i == 3 { // The batch boundary.
			stats := mgo.GetStats()
			c.Assert(stats.ReceivedDocs, Equals, 2)
		}
	}

	mgo.ResetStats()

	// The following call to Next will block.
	go func() {
		time.Sleep(5e8)
		session := session.New()
		defer session.Close()
		coll := session.DB("mydb").C("mycoll")
		coll.Insert(M{"n": 47})
	}()

	c.Log("Will wait for Next with N=47...")
	err = iter.Next(&result)
	c.Assert(err, IsNil)
	c.Assert(result.N, Equals, 47)
	c.Log("Got Next with N=47!")

	// The following may break because it depends a bit on the internal
	// timing used by MongoDB's AwaitData logic.  If it does, the problem
	// will be observed as more GET_MORE_OPs than predicted:
	// 1*QUERY_OP for nonce + 1*GET_MORE_OP on Next +
	// 1*INSERT_OP + 1*QUERY_OP for getLastError on insert of 47
	stats := mgo.GetStats()
	c.Assert(stats.SentOps, Equals, 4)
	c.Assert(stats.ReceivedOps, Equals, 3)  // REPLY_OPs for 1*QUERY_OP for nonce + 1*GET_MORE_OPs and 1*QUERY_OP
	c.Assert(stats.ReceivedDocs, Equals, 3) // nonce + N=47 result + getLastError response

	c.Log("Will wait for a result which will never come...")

	gotNext := make(chan os.Error)
	go func() {
		err := iter.Next(&result)
		gotNext <- err
	}()

	select {
	case err := <-gotNext:
		c.Fatal("Next returned: " + err.String())
	case <-time.After(3e9):
		// Good. Should still be sleeping at that point.
	}

	// Closing the session should cause Next to return.
	session.Close()

	select {
	case err := <-gotNext:
		c.Assert(err, Matches, "Closed explicitly")
	case <-time.After(1e9):
		c.Fatal("Closing the session did not unblock Next")
	}
}
Example #11
0
// Test tailable cursors in a situation where Next never gets to sleep once
// to respect the timeout requested on Tail.
func (s *S) TestFindTailTimeoutNoSleep(c *C) {
	session, err := mgo.Mongo("localhost:40001")
	c.Assert(err, IsNil)
	defer session.Close()

	cresult := struct{ ErrMsg string }{}

	db := session.DB("mydb")
	err = db.Run(bson.D{{"create", "mycoll"}, {"capped", true}, {"size", 1024}}, &cresult)
	c.Assert(err, IsNil)
	c.Assert(cresult.ErrMsg, Equals, "")
	coll := db.C("mycoll")

	ns := []int{40, 41, 42, 43, 44, 45, 46}
	for _, n := range ns {
		coll.Insert(M{"n": n})
	}

	session.Refresh() // Release socket.

	mgo.ResetStats()

	const timeout = 1

	query := coll.Find(M{"n": M{"$gte": 42}}).Sort(M{"$natural": 1}).Prefetch(0).Batch(2)
	iter, err := query.Tail(timeout)
	c.Assert(err, IsNil)

	n := len(ns)
	result := struct{ N int }{}
	for i := 2; i != n; i++ {
		err = iter.Next(&result)
		c.Assert(err, IsNil)
		c.Assert(result.N, Equals, ns[i])
		if i == 3 { // The batch boundary.
			stats := mgo.GetStats()
			c.Assert(stats.ReceivedDocs, Equals, 2)
		}
	}

	mgo.ResetStats()

	// The following call to Next will block.
	go func() {
		// The internal AwaitData timing of MongoDB is around 2 seconds,
		// so this item should arrive within the AwaitData threshold.
		time.Sleep(5e8)
		session := session.New()
		defer session.Close()
		coll := session.DB("mydb").C("mycoll")
		coll.Insert(M{"n": 47})
	}()

	c.Log("Will wait for Next with N=47...")
	err = iter.Next(&result)
	c.Assert(err, IsNil)
	c.Assert(result.N, Equals, 47)
	c.Log("Got Next with N=47!")

	// The following may break because it depends a bit on the internal
	// timing used by MongoDB's AwaitData logic.  If it does, the problem
	// will be observed as more GET_MORE_OPs than predicted:
	// 1*QUERY_OP for nonce + 1*GET_MORE_OP on Next +
	// 1*INSERT_OP + 1*QUERY_OP for getLastError on insert of 47
	stats := mgo.GetStats()
	c.Assert(stats.SentOps, Equals, 4)
	c.Assert(stats.ReceivedOps, Equals, 3)  // REPLY_OPs for 1*QUERY_OP for nonce + 1*GET_MORE_OPs and 1*QUERY_OP
	c.Assert(stats.ReceivedDocs, Equals, 3) // nonce + N=47 result + getLastError response

	c.Log("Will wait for a result which will never come...")

	started := time.Nanoseconds()
	err = iter.Next(&result)
	c.Assert(time.Nanoseconds()-started > timeout*1e9, Equals, true)
	c.Assert(err == mgo.TailTimeout, Equals, true)
}
Example #12
0
func (s *S) TestCloneSession(c *C) {
	session, err := mgo.Mongo("localhost:40001")
	c.Assert(err, IsNil)
	defer session.Close()

	// Do a dummy operation to wait for connection.
	coll := session.DB("mydb").C("mycoll")
	err = coll.Insert(M{"_id": 1})
	c.Assert(err, IsNil)

	// Tweak safety and query settings to ensure clone is copying those.
	session.SetSafe(nil)
	session.SetBatch(-1)
	clone := session.Clone()
	defer clone.Close()
	session.SetSafe(&mgo.Safe{})

	// Clone was copied while session was unsafe, so no errors.
	cloneColl := clone.DB("mydb").C("mycoll")
	err = cloneColl.Insert(M{"_id": 1})
	c.Assert(err, IsNil)

	// Original session was made safe again.
	err = coll.Insert(M{"_id": 1})
	c.Assert(err, NotNil)

	// With Clone(), same socket is shared between sessions now.
	stats := mgo.GetStats()
	c.Assert(stats.SocketsInUse, Equals, 1)
	c.Assert(stats.SocketRefs, Equals, 2)

	// Refreshing one of them should let the original socket go,
	// while preserving the safety settings.
	clone.Refresh()
	err = cloneColl.Insert(M{"_id": 1})
	c.Assert(err, IsNil)

	// Must have used another connection now.
	stats = mgo.GetStats()
	c.Assert(stats.SocketsInUse, Equals, 2)
	c.Assert(stats.SocketRefs, Equals, 2)

	// Ensure query parameters were cloned.
	err = cloneColl.Insert(M{"_id": 2})
	c.Assert(err, IsNil)

	// Ping the database to ensure the nonce has been received already.
	c.Assert(clone.Ping(), IsNil)

	mgo.ResetStats()

	iter := cloneColl.Find(M{}).Iter()
	c.Assert(err, IsNil)

	m := M{}
	ok := iter.Next(m)
	c.Assert(ok, Equals, true)
	err = iter.Err()
	c.Assert(err, IsNil)

	// If Batch(-1) is in effect, a single document must have been received.
	stats = mgo.GetStats()
	c.Assert(stats.ReceivedDocs, Equals, 1)
}