Exemplo n.º 1
0
func findHandlerPickle(w http.ResponseWriter, req *http.Request, responses []serverResponse) ([]map[interface{}]interface{}, map[string][]string, error) {

	// metric -> [server1, ... ]
	paths := make(map[string][]string)

	var metrics []map[interface{}]interface{}
	for _, r := range responses {
		d := pickle.NewDecoder(bytes.NewReader(r.response))
		metric, err := d.Decode()
		if err != nil {
			logger.Logf("error decoding response from server:%s: req:%s: err=%s", r.server, req.URL.RequestURI(), err)
			if Debug > 1 {
				logger.Logln("\n" + hex.Dump(r.response))
			}
			Metrics.Errors.Add(1)
			continue
		}

		marray, ok := metric.([]interface{})
		if !ok {
			logger.Logf("bad type for metric:%t from server:%s: req:%s", metric, r.server, req.URL.RequestURI())
			http.Error(w, fmt.Sprintf("bad type for metric: %t", metric), http.StatusInternalServerError)
			Metrics.Errors.Add(1)
			return nil, nil, errors.New("failed")
		}

		for i, m := range marray {
			mm, ok := m.(map[interface{}]interface{})
			if !ok {
				logger.Logf("bad type for metric[%d]:%t from server:%s: req:%s", i, m, r.server, req.URL.RequestURI())
				http.Error(w, fmt.Sprintf("bad type for metric[%d]:%t", i, m), http.StatusInternalServerError)
				Metrics.Errors.Add(1)
				return nil, nil, errors.New("failed")
			}
			name, ok := mm["metric_path"].(string)
			if !ok {
				logger.Logf("bad type for metric_path:%t from server:%s: req:%s", mm["metric_path"], r.server, req.URL.RequestURI())
				http.Error(w, fmt.Sprintf("bad type for metric_path: %t", mm["metric_path"]), http.StatusInternalServerError)
				Metrics.Errors.Add(1)
				return nil, nil, errors.New("failed")
			}
			p, ok := paths[name]
			if !ok {
				// we haven't seen this name yet
				// add the metric to the list of metrics to return
				metrics = append(metrics, mm)
			}
			// add the server to the list of servers that know about this metric
			p = append(p, r.server)
			paths[name] = p
		}
	}

	return metrics, paths, nil
}
Exemplo n.º 2
0
func handleRenderPickle(w http.ResponseWriter, req *http.Request, responses []serverResponse) {

	// nothing to merge
	if len(responses) == 1 {
		w.Header().Set("Content-Type", "application/pickle")
		w.Write(responses[0].response)
		return
	}

	// decode everything
	var decoded [][]interface{}
	for _, r := range responses {
		d := pickle.NewDecoder(bytes.NewReader(r.response))
		metric, err := d.Decode()
		if err != nil {
			logger.Logf("error decoding response from server:%s: req:%s: err=%s", r.server, req.URL.RequestURI(), err)
			if Debug > 1 {
				logger.Logln("\n" + hex.Dump(r.response))
			}
			Metrics.Errors.Add(1)
			continue
		}

		marray, ok := metric.([]interface{})
		if !ok {
			err := fmt.Sprintf("bad type for metric:%d from server:%s req:%s", metric, r.server, req.URL.RequestURI())
			logger.Logln(err)
			http.Error(w, err, http.StatusInternalServerError)
			Metrics.Errors.Add(1)
			return
		}
		if len(marray) == 0 {
			continue
		}
		decoded = append(decoded, marray)
	}

	if Debug > 2 {
		logger.Logf("request: %s: %v", req.URL.RequestURI(), decoded)
	}

	if len(decoded) == 0 {
		logger.Logf("no decoded responses to merge for req:%s", req.URL.RequestURI())
		w.Header().Set("Content-Type", "application/pickle")
		w.Write(responses[0].response)
		return
	}

	if len(decoded) == 1 {
		if Debug > 0 {
			logger.Logf("only one decoded responses to merge for req:%s", req.URL.RequestURI())
		}
		w.Header().Set("Content-Type", "application/pickle")
		// send back whatever data we have
		e := pickle.NewEncoder(w)
		e.Encode(decoded[0])
		return
	}

	if len(decoded[0]) != 1 {
		err := fmt.Sprintf("bad length for decoded[]:%d from req:%s", len(decoded[0]), req.URL.RequestURI())
		logger.Logln(err)
		http.Error(w, err, http.StatusInternalServerError)
		Metrics.Errors.Add(1)
		return
	}

	base, ok := decoded[0][0].(map[interface{}]interface{})
	if !ok {
		err := fmt.Sprintf("bad type for decoded:%t from req:%s", decoded[0][0], req.URL.RequestURI())
		logger.Logln(err)
		http.Error(w, err, http.StatusInternalServerError)
		Metrics.Errors.Add(1)
		return
	}

	values, ok := base["values"].([]interface{})
	if !ok {
		err := fmt.Sprintf("bad type for values:%t from req:%s", base["values"], req.URL.RequestURI())
		logger.Logln(err)
		http.Error(w, err, http.StatusInternalServerError)
		Metrics.Errors.Add(1)
		return
	}

fixValues:
	for i := 0; i < len(values); i++ {
		if _, ok := values[i].(pickle.None); ok {
			// find one in the other values arrays
			for other := 1; other < len(decoded); other++ {
				m, ok := decoded[other][0].(map[interface{}]interface{})
				if !ok {
					logger.Logln(fmt.Sprintf("bad type for decoded[%d][0]: %t", other, decoded[other][0]))
					Metrics.Errors.Add(1)
					break fixValues
				}

				ovalues, ok := m["values"].([]interface{})
				if !ok {
					logger.Logf("bad type for ovalues:%t from req:%s (skipping)", m["values"], req.URL.RequestURI())
					Metrics.Errors.Add(1)
					break fixValues
				}

				if len(ovalues) != len(values) {
					logger.Logf("request: %s: unable to merge ovalues: len(values)=%d but len(ovalues)=%d", req.URL.RequestURI(), len(values), len(ovalues))
					Metrics.Errors.Add(1)
					break fixValues
				}

				if _, ok := ovalues[i].(pickle.None); !ok {
					values[i] = ovalues[i]
					break
				}
			}
		}
	}

	// the first response is where we've been filling in our data, so we're ok just to serialize it as our response
	w.Header().Set("Content-Type", "application/pickle")
	e := pickle.NewEncoder(w)
	e.Encode(decoded[0])
}
Exemplo n.º 3
0
func (p *Pickle) Handle(c net.Conn) {
	defer c.Close()
	// TODO c.SetTimeout(60e9)
	r := bufio.NewReaderSize(c, 4096)
ReadLoop:
	for {

		// Note that everything in this loop should proceed as fast as it can
		// so we're not blocked and can keep processing
		// so the validation, the pipeline initiated via table.Dispatch(), etc
		// must never block.

		var length uint32
		err := binary.Read(r, binary.BigEndian, &length)
		if err != nil {
			if io.EOF != err {
				log.Error("couldn't read payload length: " + err.Error())
			}
			break
		}

		lengthTotal := int(length)
		lengthRead := 0
		payload := make([]byte, lengthTotal, lengthTotal)
		for {
			tmpLengthRead, err := r.Read(payload[lengthRead:])
			if err != nil {
				log.Error("couldn't read payload: " + err.Error())
				break ReadLoop
			}
			lengthRead += tmpLengthRead
			if lengthRead == lengthTotal {
				break
			}
			if lengthRead > lengthTotal {
				log.Error(fmt.Sprintf("expected to read %d bytes, but read %d", length, lengthRead))
				break ReadLoop
			}
		}

		decoder := ogorek.NewDecoder(bytes.NewBuffer(payload))

		rawDecoded, err := decoder.Decode()
		if err != nil {
			if io.EOF != err {
				log.Error("error reading pickled data " + err.Error())
			}
			break
		}

		decoded, ok := rawDecoded.([]interface{})
		if !ok {
			log.Error(fmt.Sprintf("Unrecognized type %T for pickled data", rawDecoded))
			break
		}

	ItemLoop:
		for _, rawItem := range decoded {
			numIn.Inc(1)

			item, ok := rawItem.([]interface{})
			if !ok {
				log.Error(fmt.Sprintf("Unrecognized type %T for item", rawItem))
				numInvalid.Inc(1)
				continue
			}
			if len(item) != 2 {
				log.Error(fmt.Sprintf("item length must be 2, got %d", len(item)))
				numInvalid.Inc(1)
				continue
			}

			metric, ok := item[0].(string)
			if !ok {
				log.Error(fmt.Sprintf("item metric must be a string, got %T", item[0]))
				numInvalid.Inc(1)
				continue
			}

			data, ok := item[1].([]interface{})
			if !ok {
				log.Error(fmt.Sprintf("item data must be an array, got %T", item[1]))
				numInvalid.Inc(1)
				continue
			}
			if len(data) != 2 {
				log.Error(fmt.Sprintf("item data length must be 2, got %d", len(data)))
				numInvalid.Inc(1)
				continue
			}

			var value string
			switch data[1].(type) {
			case string:
				value = data[1].(string)
			case uint8, uint16, uint32, uint64, int8, int16, int32, int64:
				value = fmt.Sprintf("%d", data[1])
			case float32, float64:
				value = fmt.Sprintf("%f", data[1])
			default:
				log.Error(fmt.Sprintf("Unrecognized type %T for value", data[1]))
				numInvalid.Inc(1)
				continue ItemLoop
			}

			var timestamp string
			switch data[0].(type) {
			case string:
				timestamp = data[0].(string)
			case uint8, uint16, uint32, uint64, int8, int16, int32, int64, (*big.Int):
				timestamp = fmt.Sprintf("%d", data[0])
			case float32, float64:
				timestamp = fmt.Sprintf("%.0f", data[0])
			default:
				log.Error(fmt.Sprintf("Unrecognized type %T for timestamp", data[0]))
				numInvalid.Inc(1)
				continue ItemLoop
			}

			buf := []byte(metric + " " + value + " " + timestamp)

			key, _, ts, err := m20.ValidatePacket(buf, p.config.Validation_level_legacy.Level, p.config.Validation_level_m20.Level)
			if err != nil {
				p.bad.Add(key, buf, err)
				numInvalid.Inc(1)
				continue
			}

			if p.config.Validate_order {
				err = validate.Ordered(key, ts)
				if err != nil {
					p.bad.Add(key, buf, err)
					numOutOfOrder.Inc(1)
					continue
				}
			}

			p.table.Dispatch(buf)
		}
	}
}