upd types

src/index.ts

@@ -1,3 +1,4 @@
 export { Metric } from './metrics/metrics_factory';
 export { Datasource } from './metrics/metric'
+// TODO: move queryByMetric from Grafana service
 export { queryByMetric, GrafanaUnavailable, DatasourceUnavailable } from './grafana_service';

src/metrics/metric.ts

@@ -1,5 +1,6 @@
 export declare type Datasource = {
   url: string;
+  // TODO: type: enum
   type: string;
   params?: {
     db: string;
@@ -18,8 +19,8 @@ export type MetricQuery = {
 }
 
 export type MetricResults = {
-  values: any;
-  columns: any;
+  values: (number | null)[][];
+  columns: string[];
 }
 
 export type MetricId = string;

src/metrics/prometheus_metric.ts

@@ -36,13 +36,13 @@ export class PrometheusMetric extends AbstractMetric {
     }
 
     let result = res.data.data.result;
-    let result_matrix = {
+    let result_matrix: MetricResults = {
       columns: ['timestamp'],
       values: []
     };
 
     result.map(r => {
-      let keys = [];
+      let keys: string[] = [];
       for(let key in r.metric) {
         keys.push(`${key}=${r.metric[key]}`);
       }
@@ -51,8 +51,8 @@ export class PrometheusMetric extends AbstractMetric {
 
     let values = result.map(r => r.values);
 
-    let timestamps = [];
-    values.map(v => v.map(row => timestamps.push(row[0])));
+    let timestamps: (number | null)[] = [];
+    values.forEach(v => v.forEach((row: number[]) => timestamps.push(row[0])));
     timestamps = timestamps.filter(function(item, i, ar) {
       return ar.indexOf(item) === i; //uniq values
     });
@@ -70,12 +70,11 @@ export class PrometheusMetric extends AbstractMetric {
         if(currentTimestamp === t) {
           row.push(+currentValue);
           v.shift();
-        }
-        else {
+        } else {
           row.push(null);
         }
       });
-      row[0] = +row[0] * 1000; //convert timestamp to ms
+      row[0] = +(row[0] as number) * 1000; //convert timestamp to ms
       result_matrix.values.push(row);
     };
     return result_matrix;