예제 #1
0
파일: commands.go 프로젝트: mc0/okq
func qpeekgeneric(
	client *clients.Client, args []string, peekRight bool,
) (
	interface{}, error,
) {
	queueName := args[0]
	unclaimedKey := db.UnclaimedKey(queueName)
	offset := "0"
	if peekRight {
		offset = "-1"
	}

	eventIDs, err := db.Inst.Cmd("LRANGE", unclaimedKey, offset, offset).List()
	if err != nil {
		return nil, fmt.Errorf("QPEEK* LRANGE: %s", err)
	} else if len(eventIDs) == 0 {
		return nil, nil
	}

	eventID := eventIDs[0]
	itemsKey := db.ItemsKey(queueName)

	var eventRaw string
	reply := db.Inst.Cmd("HGET", itemsKey, eventID)
	if reply.IsType(redis.Nil) {
		return nil, nil
	}
	if eventRaw, err = reply.Str(); err != nil {
		return nil, fmt.Errorf("QPEEK* HGET: %s", err)
	}

	return []string{eventID, eventRaw}, nil
}
예제 #2
0
파일: commands.go 프로젝트: mc0/okq
func qflush(client *clients.Client, args []string) (interface{}, error) {
	queue := args[0]
	unclaimedKey := db.UnclaimedKey(queue)
	claimedKey := db.ClaimedKey(queue)
	itemsKey := db.ItemsKey(queue)

	err := db.Inst.Cmd("DEL", unclaimedKey, claimedKey, itemsKey).Err
	if err != nil {
		return nil, fmt.Errorf("QFLUSH DEL: %s", err)
	}
	return okSS, nil
}
예제 #3
0
파일: commands.go 프로젝트: mc0/okq
func qpushgeneric(
	_ *clients.Client, args []string, pushRight bool,
) (
	interface{}, error,
) {
	queueName, eventID, contents := args[0], args[1], args[2]
	restArgs := args[3:]
	if len(restArgs) > 0 && isEqualUpper("NOBLOCK", restArgs[0]) {
		coreArgs := args[:3]
		select {
		case qpushBGCh <- &qpushBG{coreArgs, pushRight}:
			return okSS, nil
		default:
			return fmt.Errorf("ERR too busy to process NOBLOCK event"), nil
		}
	}

	itemsKey := db.ItemsKey(queueName)

	created, err := db.Inst.Cmd("HSETNX", itemsKey, eventID, contents).Int()
	if err != nil {
		return nil, fmt.Errorf("QPUSH* HSETNX: %s", err)
	} else if created == 0 {
		return fmt.Errorf("ERR duplicate event %s", eventID), nil
	}

	unclaimedKey := db.UnclaimedKey(queueName)
	cmd := "LPUSH"
	if pushRight {
		cmd = "RPUSH"
	}
	channelName := db.QueueChannelNameKey(queueName)

	_, err = db.Inst.Pipe(
		db.PP(cmd, unclaimedKey, eventID),
		db.PP("PUBLISH", channelName, eventID),
	)
	if err != nil {
		return nil, fmt.Errorf("QPUSH* %s/PUBLISH: %s", cmd, err)
	}

	return okSS, nil
}
예제 #4
0
파일: commands_test.go 프로젝트: mc0/okq
func TestQFlush(t *T) {
	client := newClient()
	queue := clients.RandQueueName()

	// Ensure adding a single event to a queue and then flushing destroys it
	Dispatch(client, "qlpush", []string{queue, "0", "foo"})
	readAndAssertStr(t, client, "OK")
	Dispatch(client, "qflush", []string{queue})
	readAndAssertStr(t, client, "OK")
	Dispatch(client, "qstatus", []string{queue})
	readAndAssertQStatus(t, client, []queueInfo{
		queueInfo{queue, 0, 0, 0},
	})

	// Ensure adding a multiple items, having one in the claimed queue, and then
	// flushing still destroys everything
	Dispatch(client, "qlpush", []string{queue, "0", "foo"})
	readAndAssertStr(t, client, "OK")
	Dispatch(client, "qlpush", []string{queue, "1", "foo"})
	readAndAssertStr(t, client, "OK")
	Dispatch(client, "qrpop", []string{queue})
	readAndAssertArr(t, client, []string{"0", "foo"})
	Dispatch(client, "qflush", []string{queue})
	readAndAssertStr(t, client, "OK")
	Dispatch(client, "qstatus", []string{queue})
	readAndAssertQStatus(t, client, []queueInfo{
		queueInfo{queue, 0, 0, 0},
	})

	// Make sure the actual redis keys are destroyed
	keys := []string{
		db.UnclaimedKey(queue),
		db.ClaimedKey(queue),
		db.ItemsKey(queue),
	}
	for _, key := range keys {
		exists, err := db.Inst.Cmd("EXISTS", key).Int()
		assert.Nil(t, err)
		assert.Equal(t, 0, exists)
	}
}
예제 #5
0
파일: restore_test.go 프로젝트: mc0/okq
func TestRestore(t *T) {

	// Add an item to claimed list and call validateClaimedEvents. Since it
	// doesn't have a lock it should be moved to the unclaimed list
	q := clients.RandQueueName()
	unclaimedKey := db.UnclaimedKey(q)
	claimedKey := db.ClaimedKey(q)
	itemsKey := db.ItemsKey(q)
	require.Nil(t, db.Inst.Cmd("HSET", itemsKey, "foo", "bar").Err)
	require.Nil(t, db.Inst.Cmd("LPUSH", claimedKey, "foo").Err)

	validateClaimedEvents()

	l, err := db.Inst.Cmd("LRANGE", claimedKey, 0, -1).List()
	require.Nil(t, err)
	assert.Empty(t, l)

	l, err = db.Inst.Cmd("LRANGE", unclaimedKey, 0, -1).List()
	require.Nil(t, err)
	assert.Equal(t, []string{"foo"}, l)
}
예제 #6
0
파일: commands.go 프로젝트: mc0/okq
func qack(client *clients.Client, args []string) (interface{}, error) {
	queueName, eventID := args[0], args[1]
	claimedKey := db.ClaimedKey(queueName)

	var numRemoved int
	numRemoved, err := db.Inst.Cmd("LREM", claimedKey, -1, eventID).Int()
	if err != nil {
		return nil, fmt.Errorf("QACK LREM (claimed): %s", err)
	}

	// If we didn't removed the eventID from the claimed events we see if it can
	// be found in unclaimed. We only do this in the uncommon case that the
	// eventID isn't in claimed since unclaimed can be really large, so LREM is
	// slow on it
	if numRemoved == 0 {
		unclaimedKey := db.UnclaimedKey(queueName)
		var err error
		numRemoved, err = db.Inst.Cmd("LREM", unclaimedKey, -1, eventID).Int()
		if err != nil {
			return nil, fmt.Errorf("QACK LREM (unclaimed): %s", err)
		}
	}

	// We only remove the object data itself if the eventID was actually removed
	// from something
	if numRemoved > 0 {
		itemsKey := db.ItemsKey(queueName)
		lockKey := db.ItemLockKey(queueName, eventID)
		_, err := db.Inst.Pipe(
			db.PP("HDEL", itemsKey, eventID),
			db.PP("DEL", lockKey),
		)
		if err != nil {
			return nil, fmt.Errorf("QACK HDEL/DEL: %s", err)
		}
	}

	return numRemoved, nil
}
예제 #7
0
파일: commands.go 프로젝트: mc0/okq
func qrpop(client *clients.Client, args []string) (interface{}, error) {
	var err error
	queueName := args[0]
	expires := 30

	noack := false
	args = args[1:]
	if len(args) > 1 && isEqualUpper("EX", args[0]) {
		if expires, err = parseInt(args[1], "expires"); err != nil {
			return err, nil
		}
		// The expiry of 0 is special and turns the read into at-most-once
		if expires == 0 {
			noack = true
			expires = 30
		}
	}

	unclaimedKey := db.UnclaimedKey(queueName)
	claimedKey := db.ClaimedKey(queueName)
	itemsKey := db.ItemsKey(queueName)

	reply := db.Inst.Lua("RPOPLPUSH_LOCK_HGET", 3, unclaimedKey, claimedKey, itemsKey, queueName, expires)
	if reply.IsType(redis.Nil) {
		return nil, nil
	}

	r, err := reply.List()
	if err != nil {
		return nil, fmt.Errorf("QRPOP RPOPLPUSH_LOCK_HGET: %s", err)
	}

	if noack {
		qack(client, []string{queueName, r[0]})
	}

	return r, nil
}