[dashboard] Add support for log query in legacy API

dashboards.go

@@ -37,6 +37,39 @@ type GraphDefinitionRequest struct {
 	OrderBy        *string                            `json:"order_by,omitempty"`
 	ExtraCol       *string                            `json:"extra_col,omitempty"`
 	Metadata       map[string]GraphDefinitionMetadata `json:"metadata,omitempty"`
+
+	// For APM and log query
+	LogQuery *GraphApmOrLogQuery `json:"log_query,omitempty"`
+}
+
+// GraphApmOrLogQuery represents an APM or a Log query
+type GraphApmOrLogQuery struct {
+	Index   *string                     `json:"index"`
+	Compute *GraphApmOrLogQueryCompute  `json:"compute"`
+	Search  *GraphApmOrLogQuerySearch   `json:"search,omitempty"`
+	GroupBy []GraphApmOrLogQueryGroupBy `json:"groupBy,omitempty"`
+}
+
+type GraphApmOrLogQueryCompute struct {
+	Aggregation *string `json:"aggregation"`
+	Facet       *string `json:"facet,omitempty"`
+	Interval    *int    `json:"interval,omitempty"`
+}
+
+type GraphApmOrLogQuerySearch struct {
+	Query *string `json:"query"`
+}
+
+type GraphApmOrLogQueryGroupBy struct {
+	Facet *string                        `json:"facet"`
+	Limit *int                           `json:"limit,omitempty"`
+	Sort  *GraphApmOrLogQueryGroupBySort `json:"sort,omitempty"`
+}
+
+type GraphApmOrLogQueryGroupBySort struct {
+	Aggregation *string `json:"aggregation"`
+	Order       *string `json:"order"`
+	Facet       *string `json:"facet,omitempty"`
 }
 
 type GraphDefinitionMetadata TileDefMetadata