func (rp *ResponseParser) Parse(response *Response, query *Query) *tsdb.QueryResult {
queryRes := tsdb.NewQueryResult()
for _, result := range response.Results {
queryRes.Series = append(queryRes.Series, rp.transformRows(result.Series, queryRes, query)...)
}
return queryRes
}
func (e *GraphiteExecutor) Execute(ctx context.Context, queries tsdb.QuerySlice, context *tsdb.QueryContext) *tsdb.BatchResult {
result := &tsdb.BatchResult{}
formData := url.Values{
"from": []string{"-" + formatTimeRange(context.TimeRange.From)},
"until": []string{formatTimeRange(context.TimeRange.To)},
"format": []string{"json"},
"maxDataPoints": []string{"500"},
}
for _, query := range queries {
if fullTarget, err := query.Model.Get("targetFull").String(); err == nil {
formData["target"] = []string{fullTarget}
} else {
formData["target"] = []string{query.Model.Get("target").MustString()}
}
}
if setting.Env == setting.DEV {
glog.Debug("Graphite request", "params", formData)
}
req, err := e.createRequest(formData)
if err != nil {
result.Error = err
return result
}
res, err := ctxhttp.Do(ctx, HttpClient, req)
if err != nil {
result.Error = err
return result
}
data, err := e.parseResponse(res)
if err != nil {
result.Error = err
return result
}
result.QueryResults = make(map[string]*tsdb.QueryResult)
queryRes := tsdb.NewQueryResult()
for _, series := range data {
queryRes.Series = append(queryRes.Series, &tsdb.TimeSeries{
Name: series.Target,
Points: series.DataPoints,
})
if setting.Env == setting.DEV {
glog.Debug("Graphite response", "target", series.Target, "datapoints", len(series.DataPoints))
}
}
result.QueryResults["A"] = queryRes
return result
}
func (e *OpenTsdbExecutor) parseResponse(query OpenTsdbQuery, res *http.Response) (map[string]*tsdb.QueryResult, error) {
queryResults := make(map[string]*tsdb.QueryResult)
queryRes := tsdb.NewQueryResult()
body, err := ioutil.ReadAll(res.Body)
defer res.Body.Close()
if err != nil {
return nil, err
}
if res.StatusCode/100 != 2 {
plog.Info("Request failed", "status", res.Status, "body", string(body))
return nil, fmt.Errorf("Request failed status: %v", res.Status)
}
var data []OpenTsdbResponse
err = json.Unmarshal(body, &data)
if err != nil {
plog.Info("Failed to unmarshal opentsdb response", "error", err, "status", res.Status, "body", string(body))
return nil, err
}
for _, val := range data {
series := tsdb.TimeSeries{
Name: val.Metric,
}
for timeString, value := range val.DataPoints {
timestamp, err := strconv.ParseFloat(timeString, 64)
if err != nil {
plog.Info("Failed to unmarshal opentsdb timestamp", "timestamp", timeString)
return nil, err
}
series.Points = append(series.Points, tsdb.NewTimePoint(null.FloatFrom(value), timestamp))
}
queryRes.Series = append(queryRes.Series, &series)
}
queryResults["A"] = queryRes
return queryResults, nil
}
func parseResponse(value pmodel.Value, query *PrometheusQuery) (map[string]*tsdb.QueryResult, error) {
queryResults := make(map[string]*tsdb.QueryResult)
queryRes := tsdb.NewQueryResult()
data, ok := value.(pmodel.Matrix)
if !ok {
return queryResults, fmt.Errorf("Unsupported result format: %s", value.Type().String())
}
for _, v := range data {
series := tsdb.TimeSeries{
Name: formatLegend(v.Metric, query),
}
for _, k := range v.Values {
series.Points = append(series.Points, tsdb.NewTimePoint(null.FloatFrom(float64(k.Value)), float64(k.Timestamp.Unix()*1000)))
}
queryRes.Series = append(queryRes.Series, &series)
}
queryResults["A"] = queryRes
return queryResults, nil
}
func init() {
ScenarioRegistry = make(map[string]*Scenario)
logger := log.New("tsdb.testdata")
logger.Debug("Initializing TestData Scenario")
registerScenario(&Scenario{
Id: "random_walk",
Name: "Random Walk",
Handler: func(query *tsdb.Query, context *tsdb.QueryContext) *tsdb.QueryResult {
timeWalkerMs := context.TimeRange.GetFromAsMsEpoch()
to := context.TimeRange.GetToAsMsEpoch()
series := newSeriesForQuery(query)
points := make(tsdb.TimeSeriesPoints, 0)
walker := rand.Float64() * 100
for i := int64(0); i < 10000 && timeWalkerMs < to; i++ {
points = append(points, tsdb.NewTimePoint(walker, float64(timeWalkerMs)))
walker += rand.Float64() - 0.5
timeWalkerMs += query.IntervalMs
}
series.Points = points
queryRes := tsdb.NewQueryResult()
queryRes.Series = append(queryRes.Series, series)
return queryRes
},
})
registerScenario(&Scenario{
Id: "no_data_points",
Name: "No Data Points",
Handler: func(query *tsdb.Query, context *tsdb.QueryContext) *tsdb.QueryResult {
return tsdb.NewQueryResult()
},
})
registerScenario(&Scenario{
Id: "datapoints_outside_range",
Name: "Datapoints Outside Range",
Handler: func(query *tsdb.Query, context *tsdb.QueryContext) *tsdb.QueryResult {
queryRes := tsdb.NewQueryResult()
series := newSeriesForQuery(query)
outsideTime := context.TimeRange.MustGetFrom().Add(-1*time.Hour).Unix() * 1000
series.Points = append(series.Points, tsdb.NewTimePoint(10, float64(outsideTime)))
queryRes.Series = append(queryRes.Series, series)
return queryRes
},
})
registerScenario(&Scenario{
Id: "csv_metric_values",
Name: "CSV Metric Values",
StringInput: "1,20,90,30,5,0",
Handler: func(query *tsdb.Query, context *tsdb.QueryContext) *tsdb.QueryResult {
queryRes := tsdb.NewQueryResult()
stringInput := query.Model.Get("stringInput").MustString()
values := []float64{}
for _, strVal := range strings.Split(stringInput, ",") {
if val, err := strconv.ParseFloat(strVal, 64); err == nil {
values = append(values, val)
}
}
if len(values) == 0 {
return queryRes
}
series := newSeriesForQuery(query)
startTime := context.TimeRange.GetFromAsMsEpoch()
endTime := context.TimeRange.GetToAsMsEpoch()
step := (endTime - startTime) / int64(len(values)-1)
for _, val := range values {
series.Points = append(series.Points, tsdb.NewTimePoint(val, float64(startTime)))
startTime += step
}
queryRes.Series = append(queryRes.Series, series)
return queryRes
},
})
}