feat(influxdb): parse query json

pkg/tsdb/influxdb/models.go

@@ -1 +1,99 @@
 package influxdb
+
+import "github.com/grafana/grafana/pkg/components/simplejson"
+
+type InfluxDBQuery struct {
+	Measurement  string
+	Policy       string
+	ResultFormat string
+	Tags         []Tag
+	GroupBy      []GroupBy
+}
+
+type Tag struct {
+	Key      string
+	Operator string
+	Value    string
+}
+
+type GroupBy struct {
+	Type   string
+	Params []string
+}
+
+type InfluxDbSelect struct {
+	Type string
+}
+
+func ParseQuery(model *simplejson.Json) (*InfluxDBQuery, error) {
+	measurement, err := model.Get("measurement").String()
+	if err != nil {
+		return nil, err
+	}
+
+	policy := model.Get("policy").MustString("default")
+
+	resultFormat, err := model.Get("resultFormat").String()
+	if err != nil {
+		return nil, err
+	}
+
+	var tags []Tag
+	var groupBy []GroupBy
+
+	for _, g := range model.Get("groupBy").MustArray() {
+		group := simplejson.NewFromAny(g)
+
+		typ, err := group.Get("type").String()
+		if err != nil {
+			return nil, err
+		}
+
+		var params []string
+		for _, p := range group.Get("params").MustArray() {
+			param := simplejson.NewFromAny(p)
+
+			pv, err := param.String()
+			if err != nil {
+				return nil, err
+			}
+			params = append(params, pv)
+		}
+
+		gap := GroupBy{
+			Type:   typ,
+			Params: params,
+		}
+
+		groupBy = append(groupBy, gap)
+	}
+
+	for _, t := range model.Get("tags").MustArray() {
+		tag := simplejson.NewFromAny(t)
+
+		key, err := tag.Get("key").String()
+		if err != nil {
+			return nil, err
+		}
+
+		operator, err := tag.Get("operator").String()
+		if err != nil {
+			return nil, err
+		}
+
+		value, err := tag.Get("value").String()
+		if err != nil {
+			return nil, err
+		}
+
+		tags = append(tags, Tag{Key: key, Operator: operator, Value: value})
+	}
+
+	return &InfluxDBQuery{
+		Measurement:  measurement,
+		Policy:       policy,
+		ResultFormat: resultFormat,
+		GroupBy:      groupBy,
+		Tags:         tags,
+	}, nil
+}