Esempio n. 1
0
func (r *redismqQ) Get(timeout time.Duration) (*Message, error) {
	packChan := make(chan *redismq.Package)
	errChan := make(chan error)
	quit := make(chan int)
	go func() {
		var pack *redismq.Package
		var err error
		for pack == nil {
			select {
			case <-quit:
				return
			default:
				pack, err = r.consumer.NoWaitGet()
				if err != nil {
					errChan <- err
					return
				}
			}
		}
		packChan <- pack
	}()
	var pack *redismq.Package
	select {
	case pack = <-packChan:
	case err := <-errChan:
		return nil, err
	case <-time.After(timeout):
		close(quit)
		return nil, &timeoutError{timeout: timeout}
	}
	defer pack.Ack()
	reader := strings.NewReader(pack.Payload)
	var msg Message
	if err := json.NewDecoder(reader).Decode(&msg); err != nil && err != io.EOF {
		return nil, fmt.Errorf("Invalid message: %q", pack.Payload)
	}
	return &msg, nil
}
Esempio n. 2
0
func (ri *RedisMQInput) Run(ir pipeline.InputRunner, h pipeline.PluginHelper) error {
	// Get the InputRunner's chan to receive empty PipelinePacks
	packs := ir.InChan()

	var decoding chan<- *pipeline.PipelinePack
	if ri.conf.Decoder != "" {
		// Fetch specified decoder
		decoder, ok := h.DecoderRunner(ri.conf.Decoder)
		if !ok {
			err := fmt.Errorf("Could not find decoder", ri.conf.Decoder)
			return err
		}

		// Get the decoder's receiving chan
		decoding = decoder.InChan()
	}

	var pack *pipeline.PipelinePack
	//var p []*redismq.Package
	var p *redismq.Package
	var count int
	var b []byte
	var err error

	for {
		p, err = ri.rdconsumer.Get()
		if err != nil {
			ir.LogError(err)
			continue
		}
		err = p.Ack()
		if err != nil {
			ir.LogError(err)
		}
		b = []byte(p.Payload)
		// Grab an empty PipelinePack from the InputRunner
		pack = <-packs

		// Trim the excess empty bytes
		count = len(b)
		pack.MsgBytes = pack.MsgBytes[:count]

		// Copy ws bytes into pack's bytes
		copy(pack.MsgBytes, b)

		if decoding != nil {
			// Send pack onto decoder
			decoding <- pack
		} else {
			// Send pack into Heka pipeline
			ir.Inject(pack)
		}
	}
	/*
	           checkStat := time.Tick(ri.statInterval)
	           ok := true
	           for ok {
	               select {
	   		case _, ok = <-ri.stopChan:
	   			break
	   		case <-checkStat:
	                       p, err = ri.rdconsumer.MultiGet(500)
	                       if err != nil {
	                           ir.LogError(err)
	                           continue
	                       }
	                       err = p[len(p)-1].MultiAck()
	                       if err != nil {
	                           ir.LogError(err)
	                       }
	                       for _, v := range p {
	                         b = []byte(v.Payload)
	                         // Grab an empty PipelinePack from the InputRunner
	                         pack = <-packs

	                         // Trim the excess empty bytes
	                         count = len(b)
	                         pack.MsgBytes = pack.MsgBytes[:count]

	                         // Copy ws bytes into pack's bytes
	                         copy(pack.MsgBytes, b)

	                         if decoding != nil {
	                           // Send pack onto decoder
	                           decoding <- pack
	                         } else {
	                           // Send pack into Heka pipeline
	                           ir.Inject(pack)
	                         }
	                       }
	                   }
	           }
	*/
	return nil
}