Prometheus: support auth

README.md

@@ -12,7 +12,7 @@ TSDB-kit is a node.js library and CLI-tool for querying timeseries-datasources.
 
 ### Direct
 
-* Prometheus (limited, auth is not supported yet)
+* Prometheus
 
 ### Grafana
 
@@ -34,7 +34,7 @@ For now, CLI supports only direct Prometheus queries
 
 For example:
 
-`npx @corpglory/tsdb-kit -u http://localhost:9090 -q '100-(avg by (instance) (irate(node_cpu_seconds_total{mode="idle"}[5m])) * 100)'`
+`npx @corpglory/tsdb-kit -U http://localhost:9090 -q '100-(avg by (instance) (irate(node_cpu_seconds_total{mode="idle"}[5m])) * 100)' -u my_user -p my_password`
 
 
 ## Development (TODO)

spec/prometheus.jest.ts

@@ -7,7 +7,11 @@ import 'jest';
 describe('Test Prometheus time range processing', function() {
   let datasource = {
     type: DatasourceType.PROMETHEUS,
-    url: 'api/datasources/proxy/4/api/v1/query_range?query=node_disk_io_time_ms&start=1543411320&end=1543432950&step=30'
+    url: 'api/datasources/proxy/4/api/v1/query_range?query=node_disk_io_time_ms&start=1543411320&end=1543432950&step=30',
+    auth: {
+      username: 'my_user',
+      password: 'my_password',
+    }
   }
   let targets = [];
   let prometheus = new PrometheusConnector(datasource, targets);
@@ -19,4 +23,11 @@ describe('Test Prometheus time range processing', function() {
     expect(query.url.indexOf(`start=${Math.floor(from / 1000)}`) !== -1).toBeTruthy();
     expect(query.url.indexOf(`end=${Math.floor(to / 1000)}`) !== -1).toBeTruthy();
   });
+
+  it('check that username/password present in query', function() {
+    let query = prometheus.getQuery(0, 0, 1000, 0);
+
+    expect(query.auth?.username).toBe('my_user');
+    expect(query.auth?.password).toBe('my_password');
+  })
 });

src/connectors/index.ts

@@ -12,6 +12,7 @@ export enum DatasourceType {
   MYSQL = 'mysql',
 }
 
+// TODO: Datasource: type -> class
 export declare type Datasource = {
   url: string;
   type: DatasourceType;
@@ -22,6 +23,7 @@ export declare type Datasource = {
   };
   data?: any;
   datasourceId?: string;
+  auth?: any;
 };
 
 export type DatasourceQuery = {
@@ -29,6 +31,10 @@ export type DatasourceQuery = {
   method: string;
   schema: any;
   headers?: any;
+  auth?: {
+    username: string;
+    password: string;
+  };
 }
 
 export type DataTable = {

src/connectors/prometheus.ts

@@ -21,7 +21,8 @@ export class PrometheusConnector extends DatasourceConnector {
       method: 'GET',
       schema: {
         params: this.datasource.params
-      }
+      },
+      auth: this.datasource.auth,
     }
   }
 

src/services/query_service/direct.ts

@@ -14,8 +14,7 @@ export class DirectQueryService extends QueryService {
   async query(query: DatasourceQuery): Promise<AxiosResponse<any>> {
     // TODO: support auth
     let axiosQuery = {
-      url: query.url,
+      ...query,
-      method: query.method,
     };
 
     _.defaults(axiosQuery, query.schema);

src/tsdb-kit/index.ts

@@ -9,10 +9,12 @@ import * as _ from 'lodash';
 const parser = new ArgumentParser();
 
 parser.add_argument('-v', '--version', { action: 'version', version });
-parser.add_argument('-u', '--url', { help: 'Datasource URL', required: true });
+parser.add_argument('-U', '--url', { help: 'Datasource URL', required: true });
 parser.add_argument('-q', '--query', { help: 'Query Template', required: true });
 parser.add_argument('-f', '--from', { help: 'From timestamp (ms), e.g. 1660670020000. If not specified, `now-5m` is used' });
 parser.add_argument('-t', '--to', { help: 'To timestamp (ms), e.g. 1660670026000. If not specified, `now` is used' });
+parser.add_argument('-u', '--username', { help: 'Basic Auth Username' });
+parser.add_argument('-p', '--password', { help: 'Basic Auth Password' });
 
 const args = parser.parse_args();
 
@@ -22,12 +24,19 @@ const PROMETHEUS_URL = args.url;
 const QUERY = args.query;
 const FROM = args.from || timeNowInMs - 5 * 60 * 1000;
 const TO = args.to || timeNowInMs;
+const USERNAME = args.username;
+const PASSWORD = args.password;
 
+let auth;
+if(USERNAME && PASSWORD) {
+  auth = { username: USERNAME, password: PASSWORD };
+}
 const datasource = {
   type: DatasourceType.PROMETHEUS,
   // TODO: remove PROMETHEUS_URL from here
-  url: `${PROMETHEUS_URL}/api/v1/query_range?query=${QUERY}&start=1543411320&end=1543432950&step=30`
+  url: `${PROMETHEUS_URL}/api/v1/query_range?query=${QUERY}&start=1543411320&end=1543432950&step=30`,
-}
+  auth,
+};
 const targets = [];
 const queryConfig = new QueryConfig(QueryType.DIRECT, datasource, targets);
 queryByConfig(queryConfig, PROMETHEUS_URL, FROM, TO)