Exemplo n.º 1
0
// Parse returns a slice of Metrics from a text representation of a
// metric (in line-protocol format)
// with each metric separated by newlines. If any metrics fail to parse,
// a non-nil error will be returned in addition to the metrics that parsed
// successfully.
func (p *InfluxParser) Parse(buf []byte) ([]telegraf.Metric, error) {
	// parse even if the buffer begins with a newline
	buf = bytes.TrimPrefix(buf, []byte("\n"))
	points, err := models.ParsePoints(buf)
	metrics := make([]telegraf.Metric, len(points))
	for i, point := range points {
		tags := point.Tags()
		for k, v := range p.DefaultTags {
			// Only set tags not in parsed metric
			if _, ok := tags[k]; !ok {
				tags[k] = v
			}
		}
		// Ignore error here because it's impossible that a model.Point
		// wouldn't parse into client.Point properly
		metrics[i], _ = telegraf.NewMetric(point.Name(), tags,
			point.Fields(), point.Time())
	}
	return metrics, err
}
Exemplo n.º 2
0
func (p *JSONParser) Parse(buf []byte) ([]telegraf.Metric, error) {
	metrics := make([]telegraf.Metric, 0)

	var jsonOut map[string]interface{}
	err := json.Unmarshal(buf, &jsonOut)
	if err != nil {
		err = fmt.Errorf("unable to parse out as JSON, %s", err)
		return nil, err
	}

	tags := make(map[string]string)
	for k, v := range p.DefaultTags {
		tags[k] = v
	}

	for _, tag := range p.TagKeys {
		switch v := jsonOut[tag].(type) {
		case string:
			tags[tag] = v
		}
		delete(jsonOut, tag)
	}

	f := JSONFlattener{}
	err = f.FlattenJSON("", jsonOut)
	if err != nil {
		return nil, err
	}

	metric, err := telegraf.NewMetric(p.MetricName, tags, f.Fields, time.Now().UTC())

	if err != nil {
		return nil, err
	}
	return append(metrics, metric), nil
}
Exemplo n.º 3
0
func (ac *accumulator) AddFields(
	measurement string,
	fields map[string]interface{},
	tags map[string]string,
	t ...time.Time,
) {
	if len(fields) == 0 || len(measurement) == 0 {
		return
	}

	if !ac.inputConfig.Filter.ShouldTagsPass(tags) {
		return
	}

	// Override measurement name if set
	if len(ac.inputConfig.NameOverride) != 0 {
		measurement = ac.inputConfig.NameOverride
	}
	// Apply measurement prefix and suffix if set
	if len(ac.inputConfig.MeasurementPrefix) != 0 {
		measurement = ac.inputConfig.MeasurementPrefix + measurement
	}
	if len(ac.inputConfig.MeasurementSuffix) != 0 {
		measurement = measurement + ac.inputConfig.MeasurementSuffix
	}

	if tags == nil {
		tags = make(map[string]string)
	}
	// Apply plugin-wide tags if set
	for k, v := range ac.inputConfig.Tags {
		if _, ok := tags[k]; !ok {
			tags[k] = v
		}
	}
	// Apply daemon-wide tags if set
	for k, v := range ac.defaultTags {
		if _, ok := tags[k]; !ok {
			tags[k] = v
		}
	}

	result := make(map[string]interface{})
	for k, v := range fields {
		// Filter out any filtered fields
		if ac.inputConfig != nil {
			if !ac.inputConfig.Filter.ShouldPass(k) {
				continue
			}
		}
		result[k] = v

		// Validate uint64 and float64 fields
		switch val := v.(type) {
		case uint64:
			// InfluxDB does not support writing uint64
			if val < uint64(9223372036854775808) {
				result[k] = int64(val)
			} else {
				result[k] = int64(9223372036854775807)
			}
		case float64:
			// NaNs are invalid values in influxdb, skip measurement
			if math.IsNaN(val) || math.IsInf(val, 0) {
				if ac.debug {
					log.Printf("Measurement [%s] field [%s] has a NaN or Inf "+
						"field, skipping",
						measurement, k)
				}
				continue
			}
		}
	}
	fields = nil
	if len(result) == 0 {
		return
	}

	var timestamp time.Time
	if len(t) > 0 {
		timestamp = t[0]
	} else {
		timestamp = time.Now()
	}

	if ac.prefix != "" {
		measurement = ac.prefix + measurement
	}

	m, err := telegraf.NewMetric(measurement, tags, result, timestamp)
	if err != nil {
		log.Printf("Error adding point [%s]: %s\n", measurement, err.Error())
		return
	}
	if ac.debug {
		fmt.Println("> " + m.String())
	}
	ac.metrics <- m
}