Elasticsearch: Visualize logs in Explore (#17605)

* explore: try to use existing mode when switching datasource

* elasticsearch: initial explore logs support

* Elasticsearch: Adds ElasticsearchOptions type
Updates tests accordingly

* Elasticsearch: Adds typing to query method

* Elasticsearch: Makes maxConcurrentShardRequests optional

* Explore: Allows empty query for elasticsearch datasource

* Elasticsearch: Unifies ElasticsearchQuery interface definition
Removes check for context === 'explore'

* Elasticsearch: Removes context property from ElasticsearchQuery interface
Adds field property
Removes metricAggs property
Adds typing to metrics property

* Elasticsearch: Runs default 'empty' query when 'clear all' button is pressed

* Elasticsearch: Removes index property from ElasticsearchOptions interface

* Elasticsearch: Removes commented code from ElasticsearchQueryField.tsx

* Elasticsearch: Adds comment warning usage of for...in to elastic_response.ts

* Elasticsearch: adds tests related to log queries

devenv/datasources.yaml

@@ -153,6 +153,9 @@ datasources:
       interval: Daily
       timeField: "@timestamp"
       esVersion: 70
+      timeInterval: "10s"
+      logMessageField: message
+      logLevelField: fields.level
 
   - name: gdev-elasticsearch-v7-metricbeat
     type: elasticsearch

pkg/api/frontendsettings.go

@@ -115,11 +115,7 @@ func (hs *HTTPServer) getFrontendSettingsMap(c *m.ReqContext) (map[string]interf
 			}
 		}
 
-		if ds.Type == m.DS_ES {
-			dsMap["index"] = ds.Database
-		}
-
-		if ds.Type == m.DS_INFLUXDB {
+		if (ds.Type == m.DS_INFLUXDB) || (ds.Type == m.DS_ES) {
 			dsMap["database"] = ds.Database
 		}
 

public/app/features/explore/state/reducers.ts

@@ -240,7 +240,7 @@ export const itemReducer = reducerFactory<ExploreItemState>({} as ExploreItemSta
       const supportsGraph = datasourceInstance.meta.metrics;
       const supportsLogs = datasourceInstance.meta.logs;
 
-      let mode = ExploreMode.Metrics;
+      let mode = state.mode || ExploreMode.Metrics;
       const supportedModes: ExploreMode[] = [];
 
       if (supportsGraph) {

public/app/plugins/datasource/elasticsearch/components/ElasticsearchQueryField.tsx

+import _ from 'lodash';
+import React from 'react';
+// @ts-ignore
+import PluginPrism from 'slate-prism';
+// @ts-ignore
+import Prism from 'prismjs';
+
+// dom also includes Element polyfills
+import QueryField from 'app/features/explore/QueryField';
+import { ExploreQueryFieldProps } from '@grafana/ui';
+import { ElasticDatasource } from '../datasource';
+import { ElasticsearchOptions, ElasticsearchQuery } from '../types';
+
+interface Props extends ExploreQueryFieldProps<ElasticDatasource, ElasticsearchQuery, ElasticsearchOptions> {}
+
+interface State {
+  syntaxLoaded: boolean;
+}
+
+class ElasticsearchQueryField extends React.PureComponent<Props, State> {
+  plugins: any[];
+
+  constructor(props: Props, context: React.Context<any>) {
+    super(props, context);
+
+    this.plugins = [
+      PluginPrism({
+        onlyIn: (node: any) => node.type === 'code_block',
+        getSyntax: (node: any) => 'lucene',
+      }),
+    ];
+
+    this.state = {
+      syntaxLoaded: false,
+    };
+  }
+
+  componentDidMount() {
+    this.onChangeQuery('', true);
+  }
+
+  componentWillUnmount() {}
+
+  componentDidUpdate(prevProps: Props) {
+    // if query changed from the outside (i.e. cleared via explore toolbar)
+    if (!this.props.query.isLogsQuery) {
+      this.onChangeQuery('', true);
+    }
+  }
+
+  onChangeQuery = (value: string, override?: boolean) => {
+    // Send text change to parent
+    const { query, onChange, onRunQuery } = this.props;
+    if (onChange) {
+      const nextQuery: ElasticsearchQuery = { ...query, query: value, isLogsQuery: true };
+      onChange(nextQuery);
+
+      if (override && onRunQuery) {
+        onRunQuery();
+      }
+    }
+  };
+
+  render() {
+    const { queryResponse, query } = this.props;
+    const { syntaxLoaded } = this.state;
+
+    return (
+      <>
+        <div className="gf-form-inline gf-form-inline--nowrap">
+          <div className="gf-form gf-form--grow flex-shrink-1">
+            <QueryField
+              additionalPlugins={this.plugins}
+              initialQuery={query.query}
+              onChange={this.onChangeQuery}
+              onRunQuery={this.props.onRunQuery}
+              placeholder="Enter a Lucene query"
+              portalOrigin="elasticsearch"
+              syntaxLoaded={syntaxLoaded}
+            />
+          </div>
+        </div>
+        {queryResponse && queryResponse.error ? (
+          <div className="prom-query-field-info text-error">{queryResponse.error.message}</div>
+        ) : null}
+      </>
+    );
+  }
+}
+
+export default ElasticsearchQueryField;

public/app/plugins/datasource/elasticsearch/config_ctrl.ts

@@ -11,6 +11,8 @@ export class ElasticConfigCtrl {
     const defaultMaxConcurrentShardRequests = this.current.jsonData.esVersion >= 70 ? 5 : 256;
     this.current.jsonData.maxConcurrentShardRequests =
       this.current.jsonData.maxConcurrentShardRequests || defaultMaxConcurrentShardRequests;
+    this.current.jsonData.logMessageField = this.current.jsonData.logMessageField || '';
+    this.current.jsonData.logLevelField = this.current.jsonData.logLevelField || '';
   }
 
   indexPatternTypes = [

public/app/plugins/datasource/elasticsearch/datasource.ts

-import angular from 'angular';
+import angular, { IQService } from 'angular';
 import _ from 'lodash';
+import { DataSourceApi, DataSourceInstanceSettings, DataQueryRequest, DataQueryResponse } from '@grafana/ui';
 import { ElasticResponse } from './elastic_response';
 import { IndexPattern } from './index_pattern';
 import { ElasticQueryBuilder } from './query_builder';
 import { toUtc } from '@grafana/ui/src/utils/moment_wrapper';
+import * as queryDef from './query_def';
+import { BackendSrv } from 'app/core/services/backend_srv';
+import { TemplateSrv } from 'app/features/templating/template_srv';
+import { TimeSrv } from 'app/features/dashboard/services/TimeSrv';
+import { ElasticsearchOptions, ElasticsearchQuery } from './types';
 
-export class ElasticDatasource {
+export class ElasticDatasource extends DataSourceApi<ElasticsearchQuery, ElasticsearchOptions> {
   basicAuth: string;
   withCredentials: boolean;
   url: string;
@@ -17,23 +23,44 @@ export class ElasticDatasource {
   maxConcurrentShardRequests: number;
   queryBuilder: ElasticQueryBuilder;
   indexPattern: IndexPattern;
+  logMessageField?: string;
+  logLevelField?: string;
 
   /** @ngInject */
-  constructor(instanceSettings, private $q, private backendSrv, private templateSrv, private timeSrv) {
+  constructor(
+    instanceSettings: DataSourceInstanceSettings<ElasticsearchOptions>,
+    private $q: IQService,
+    private backendSrv: BackendSrv,
+    private templateSrv: TemplateSrv,
+    private timeSrv: TimeSrv
+  ) {
+    super(instanceSettings);
     this.basicAuth = instanceSettings.basicAuth;
     this.withCredentials = instanceSettings.withCredentials;
     this.url = instanceSettings.url;
     this.name = instanceSettings.name;
-    this.index = instanceSettings.index;
-    this.timeField = instanceSettings.jsonData.timeField;
-    this.esVersion = instanceSettings.jsonData.esVersion;
-    this.indexPattern = new IndexPattern(instanceSettings.index, instanceSettings.jsonData.interval);
-    this.interval = instanceSettings.jsonData.timeInterval;
-    this.maxConcurrentShardRequests = instanceSettings.jsonData.maxConcurrentShardRequests;
+    this.index = instanceSettings.database;
+    const settingsData = instanceSettings.jsonData || ({} as ElasticsearchOptions);
+
+    this.timeField = settingsData.timeField;
+    this.esVersion = settingsData.esVersion;
+    this.indexPattern = new IndexPattern(this.index, settingsData.interval);
+    this.interval = settingsData.timeInterval;
+    this.maxConcurrentShardRequests = settingsData.maxConcurrentShardRequests;
     this.queryBuilder = new ElasticQueryBuilder({
       timeField: this.timeField,
       esVersion: this.esVersion,
     });
+    this.logMessageField = settingsData.logMessageField || '';
+    this.logLevelField = settingsData.logLevelField || '';
+
+    if (this.logMessageField === '') {
+      this.logMessageField = null;
+    }
+
+    if (this.logLevelField === '') {
+      this.logLevelField = null;
+    }
   }
 
   private request(method, url, data?) {
@@ -200,7 +227,6 @@ export class ElasticDatasource {
   }
 
   testDatasource() {
-    this.timeSrv.setTime({ from: 'now-1m', to: 'now' }, true);
     // validate that the index exist and has date field
     return this.getFields({ type: 'date' }).then(
       dateFields => {
@@ -240,10 +266,10 @@ export class ElasticDatasource {
     return angular.toJson(queryHeader);
   }
 
-  query(options) {
+  query(options: DataQueryRequest<ElasticsearchQuery>): Promise<DataQueryResponse> {
     let payload = '';
     const targets = _.cloneDeep(options.targets);
-    const sentTargets = [];
+    const sentTargets: ElasticsearchQuery[] = [];
 
     // add global adhoc filters to timeFilter
     const adhocFilters = this.templateSrv.getAdhocFilters(this.name);
@@ -253,16 +279,25 @@ export class ElasticDatasource {
         continue;
       }
 
-      if (target.alias) {
-        target.alias = this.templateSrv.replace(target.alias, options.scopedVars, 'lucene');
-      }
-
       let queryString = this.templateSrv.replace(target.query, options.scopedVars, 'lucene');
       // Elasticsearch queryString should always be '*' if empty string
       if (!queryString || queryString === '') {
         queryString = '*';
       }
-      const queryObj = this.queryBuilder.build(target, adhocFilters, queryString);
+
+      let queryObj;
+      if (target.isLogsQuery) {
+        target.bucketAggs = [queryDef.defaultBucketAgg()];
+        target.metrics = [queryDef.defaultMetricAgg()];
+        queryObj = this.queryBuilder.getLogsQuery(target, queryString);
+      } else {
+        if (target.alias) {
+          target.alias = this.templateSrv.replace(target.alias, options.scopedVars, 'lucene');
+        }
+
+        queryObj = this.queryBuilder.build(target, adhocFilters, queryString);
+      }
+
       const esQuery = angular.toJson(queryObj);
 
       const searchType = queryObj.size === 0 && this.esVersion < 5 ? 'count' : 'query_then_fetch';
@@ -270,21 +305,27 @@ export class ElasticDatasource {
       payload += header + '\n';
 
       payload += esQuery + '\n';
+
       sentTargets.push(target);
     }
 
     if (sentTargets.length === 0) {
-      return this.$q.when([]);
+      return Promise.resolve({ data: [] });
     }
 
-    payload = payload.replace(/\$timeFrom/g, options.range.from.valueOf());
-    payload = payload.replace(/\$timeTo/g, options.range.to.valueOf());
+    payload = payload.replace(/\$timeFrom/g, options.range.from.valueOf().toString());
+    payload = payload.replace(/\$timeTo/g, options.range.to.valueOf().toString());
     payload = this.templateSrv.replace(payload, options.scopedVars);
 
     const url = this.getMultiSearchUrl();
 
     return this.post(url, payload).then(res => {
-      return new ElasticResponse(sentTargets, res).getTimeSeries();
+      const er = new ElasticResponse(sentTargets, res);
+      if (sentTargets.some(target => target.isLogsQuery)) {
+        return er.getLogs(this.logMessageField, this.logLevelField);
+      }
+
+      return er.getTimeSeries();
     });
   }
 
@@ -380,8 +421,8 @@ export class ElasticDatasource {
     const header = this.getQueryHeader(searchType, range.from, range.to);
     let esQuery = angular.toJson(this.queryBuilder.getTermsQuery(queryDef));
 
-    esQuery = esQuery.replace(/\$timeFrom/g, range.from.valueOf());
-    esQuery = esQuery.replace(/\$timeTo/g, range.to.valueOf());
+    esQuery = esQuery.replace(/\$timeFrom/g, range.from.valueOf().toString());
+    esQuery = esQuery.replace(/\$timeTo/g, range.to.valueOf().toString());
     esQuery = header + '\n' + esQuery + '\n';
 
     const url = this.getMultiSearchUrl();

public/app/plugins/datasource/elasticsearch/elastic_response.ts

 import _ from 'lodash';
+import flatten from 'app/core/utils/flatten';
 import * as queryDef from './query_def';
 import TableModel from 'app/core/table_model';
+import { SeriesData, DataQueryResponse, toSeriesData, FieldType } from '@grafana/ui';
 
 export class ElasticResponse {
   constructor(private targets, private response) {
@@ -410,4 +412,142 @@ export class ElasticResponse {
 
     return { data: seriesList };
   }
+
+  getLogs(logMessageField?: string, logLevelField?: string): DataQueryResponse {
+    const seriesData: SeriesData[] = [];
+    const docs: any[] = [];
+
+    for (let n = 0; n < this.response.responses.length; n++) {
+      const response = this.response.responses[n];
+      if (response.error) {
+        throw this.getErrorFromElasticResponse(this.response, response.error);
+      }
+
+      const hits = response.hits;
+      let propNames: string[] = [];
+      let propName, hit, doc, i;
+
+      for (i = 0; i < hits.hits.length; i++) {
+        hit = hits.hits[i];
+        const flattened = hit._source ? flatten(hit._source, null) : {};
+        doc = {};
+        doc[this.targets[0].timeField] = null;
+        doc = {
+          ...doc,
+          _id: hit._id,
+          _type: hit._type,
+          _index: hit._index,
+          ...flattened,
+        };
+
+        // Note: the order of for...in is arbitrary amd implementation dependant
+        // and should probably not be relied upon.
+        for (propName in hit.fields) {
+          if (propNames.indexOf(propName) === -1) {
+            propNames.push(propName);
+          }
+          doc[propName] = hit.fields[propName];
+        }
+
+        for (propName in doc) {
+          if (propNames.indexOf(propName) === -1) {
+            propNames.push(propName);
+          }
+        }
+
+        doc._source = { ...flattened };
+
+        docs.push(doc);
+      }
+
+      if (docs.length > 0) {
+        propNames = propNames.sort();
+        const series: SeriesData = {
+          fields: [
+            {
+              name: this.targets[0].timeField,
+              type: FieldType.time,
+            },
+          ],
+          rows: [],
+        };
+
+        if (logMessageField) {
+          series.fields.push({
+            name: logMessageField,
+            type: FieldType.string,
+          });
+        } else {
+          series.fields.push({
+            name: '_source',
+            type: FieldType.string,
+          });
+        }
+
+        if (logLevelField) {
+          series.fields.push({
+            name: 'level',
+            type: FieldType.string,
+          });
+        }
+
+        for (const propName of propNames) {
+          if (propName === this.targets[0].timeField || propName === '_source') {
+            continue;
+          }
+
+          series.fields.push({
+            name: propName,
+            type: FieldType.string,
+          });
+        }
+
+        for (const doc of docs) {
+          const row: any[] = [];
+          row.push(doc[this.targets[0].timeField][0]);
+
+          if (logMessageField) {
+            row.push(doc[logMessageField] || '');
+          } else {
+            row.push(JSON.stringify(doc._source, null, 2));
+          }
+
+          if (logLevelField) {
+            row.push(doc[logLevelField] || '');
+          }
+
+          for (const propName of propNames) {
+            if (doc.hasOwnProperty(propName)) {
+              row.push(doc[propName]);
+            } else {
+              row.push(null);
+            }
+          }
+
+          series.rows.push(row);
+        }
+
+        seriesData.push(series);
+      }
+
+      if (response.aggregations) {
+        const aggregations = response.aggregations;
+        const target = this.targets[n];
+        const tmpSeriesList = [];
+        const table = new TableModel();
+
+        this.processBuckets(aggregations, target, tmpSeriesList, table, {}, 0);
+        this.trimDatapoints(tmpSeriesList, target);
+        this.nameSeries(tmpSeriesList, target);
+
+        for (let y = 0; y < tmpSeriesList.length; y++) {
+          const series = toSeriesData(tmpSeriesList[y]);
+          series.labels = {};
+          seriesData.push(series);
+        }
+      }
+    }
+
+    return { data: seriesData };
+  }
 }

public/app/plugins/datasource/elasticsearch/metric_agg.ts

 import coreModule from 'app/core/core_module';
 import _ from 'lodash';
 import * as queryDef from './query_def';
+import { ElasticsearchAggregation } from './types';
 
 export class ElasticMetricAggCtrl {
   /** @ngInject */
   constructor($scope, uiSegmentSrv, $q, $rootScope) {
-    const metricAggs = $scope.target.metrics;
+    const metricAggs: ElasticsearchAggregation[] = $scope.target.metrics;
     $scope.metricAggTypes = queryDef.getMetricAggTypes($scope.esVersion);
     $scope.extendedStats = queryDef.extendedStats;
     $scope.pipelineAggOptions = [];

public/app/plugins/datasource/elasticsearch/module.ts

+import { DataSourcePlugin } from '@grafana/ui';
 import { ElasticDatasource } from './datasource';
 import { ElasticQueryCtrl } from './query_ctrl';
 import { ElasticConfigCtrl } from './config_ctrl';
+import ElasticsearchQueryField from './components/ElasticsearchQueryField';
 
 class ElasticAnnotationsQueryCtrl {
   static templateUrl = 'partials/annotations.editor.html';
 }
 
-export {
-  ElasticDatasource as Datasource,
-  ElasticQueryCtrl as QueryCtrl,
-  ElasticConfigCtrl as ConfigCtrl,
-  ElasticAnnotationsQueryCtrl as AnnotationsQueryCtrl,
-};
+export const plugin = new DataSourcePlugin(ElasticDatasource)
+  .setQueryCtrl(ElasticQueryCtrl)
+  .setConfigCtrl(ElasticConfigCtrl)
+  .setExploreLogsQueryField(ElasticsearchQueryField)
+  .setAnnotationQueryCtrl(ElasticAnnotationsQueryCtrl);

public/app/plugins/datasource/elasticsearch/partials/config.html

@@ -51,3 +51,16 @@
 		</div>
 	</div>
 </div>
+
+<b>Logs</b>
+
+<div class="gf-form-group">
+	<div class="gf-form max-width-30">
+		<span class="gf-form-label width-11">Message field name</span>
+		<input class="gf-form-input" type="text" ng-model='ctrl.current.jsonData.logMessageField' placeholder="_source" />
+	</div>
+	<div class="gf-form max-width-30">
+		<span class="gf-form-label width-11">Level field name</span>
+		<input class="gf-form-input" type="text" ng-model='ctrl.current.jsonData.logLevelField' placeholder="" />
+	</div>
+</div>

public/app/plugins/datasource/elasticsearch/plugin.json

@@ -21,6 +21,7 @@
   "alerting": true,
   "annotations": true,
   "metrics": true,
+  "logs": true,
 
   "queryOptions": {
     "minInterval": true

public/app/plugins/datasource/elasticsearch/query_builder.ts

@@ -367,4 +367,31 @@ export class ElasticQueryBuilder {
 
     return query;
   }
+
+  getLogsQuery(target, querystring) {
+    let query: any = {
+      size: 0,
+      query: {
+        bool: {
+          filter: [{ range: this.getRangeFilter() }],
+        },
+      },
+    };
+
+    if (target.query) {
+      query.query.bool.filter.push({
+        query_string: {
+          analyze_wildcard: true,
+          query: target.query,
+        },
+      });
+    }
+
+    query = this.documentQuery(query, 500);
+
+    return {
+      ...query,
+      aggs: this.build(target, null, querystring).aggs,
+    };
+  }
 }

public/app/plugins/datasource/elasticsearch/query_ctrl.ts

@@ -6,6 +6,7 @@ import angular from 'angular';
 import _ from 'lodash';
 import * as queryDef from './query_def';
 import { QueryCtrl } from 'app/plugins/sdk';
+import { ElasticsearchAggregation } from './types';
 
 export class ElasticQueryCtrl extends QueryCtrl {
   static templateUrl = 'partials/query.editor.html';
@@ -53,7 +54,7 @@ export class ElasticQueryCtrl extends QueryCtrl {
   }
 
   getCollapsedText() {
-    const metricAggs = this.target.metrics;
+    const metricAggs: ElasticsearchAggregation[] = this.target.metrics;
     const bucketAggs = this.target.bucketAggs;
     const metricAggTypes = queryDef.getMetricAggTypes(this.esVersion);
     const bucketAggTypes = queryDef.bucketAggTypes;

public/app/plugins/datasource/elasticsearch/specs/datasource.test.ts

-import angular from 'angular';
+import angular, { IQService } from 'angular';
 import * as dateMath from '@grafana/ui/src/utils/datemath';
 import _ from 'lodash';
 import { ElasticDatasource } from '../datasource';
 import { toUtc, dateTime } from '@grafana/ui/src/utils/moment_wrapper';
+import { BackendSrv } from 'app/core/services/backend_srv';
+import { TimeSrv } from 'app/features/dashboard/services/TimeSrv';
+import { TemplateSrv } from 'app/features/templating/template_srv';
+import { DataSourceInstanceSettings } from '@grafana/ui';
+import { ElasticsearchOptions } from '../types';
 
 describe('ElasticDatasource', function(this: any) {
-  const backendSrv = {
+  const backendSrv: any = {
     datasourceRequest: jest.fn(),
   };
 
-  const $rootScope = {
+  const $rootScope: any = {
     $on: jest.fn(),
     appEvent: jest.fn(),
   };
 
-  const templateSrv = {
+  const templateSrv: any = {
     replace: jest.fn(text => {
       if (text.startsWith('$')) {
         return `resolvedVariable`;
@@ -25,12 +30,12 @@ describe('ElasticDatasource', function(this: any) {
     getAdhocFilters: jest.fn(() => []),
   };
 
-  const timeSrv = {
+  const timeSrv: any = {
     time: { from: 'now-1h', to: 'now' },
     timeRange: jest.fn(() => {
       return {
-        from: dateMath.parse(this.time.from, false),
-        to: dateMath.parse(this.time.to, true),
+        from: dateMath.parse(timeSrv.time.from, false),
+        to: dateMath.parse(timeSrv.time.to, true),
       };
     }),
     setTime: jest.fn(time => {
@@ -43,18 +48,24 @@ describe('ElasticDatasource', function(this: any) {
     backendSrv,
   } as any;
 
-  function createDatasource(instanceSettings) {
-    instanceSettings.jsonData = instanceSettings.jsonData || {};
-    ctx.ds = new ElasticDatasource(instanceSettings, {}, backendSrv, templateSrv, timeSrv);
+  function createDatasource(instanceSettings: DataSourceInstanceSettings<ElasticsearchOptions>) {
+    instanceSettings.jsonData = instanceSettings.jsonData || ({} as ElasticsearchOptions);
+    ctx.ds = new ElasticDatasource(
+      instanceSettings,
+      {} as IQService,
+      backendSrv as BackendSrv,
+      templateSrv as TemplateSrv,
+      timeSrv as TimeSrv
+    );
   }
 
   describe('When testing datasource with index pattern', () => {
     beforeEach(() => {
       createDatasource({
         url: 'http://es.com',
-        index: '[asd-]YYYY.MM.DD',
-        jsonData: { interval: 'Daily', esVersion: '2' },
-      });
+        database: '[asd-]YYYY.MM.DD',
+        jsonData: { interval: 'Daily', esVersion: 2 } as ElasticsearchOptions,
+      } as DataSourceInstanceSettings<ElasticsearchOptions>);
     });
 
     it('should translate index pattern to current day', () => {
@@ -77,9 +88,9 @@ describe('ElasticDatasource', function(this: any) {
     beforeEach(async () => {
       createDatasource({
         url: 'http://es.com',
-        index: '[asd-]YYYY.MM.DD',
-        jsonData: { interval: 'Daily', esVersion: '2' },
-      });
+        database: '[asd-]YYYY.MM.DD',
+        jsonData: { interval: 'Daily', esVersion: 2 } as ElasticsearchOptions,
+      } as DataSourceInstanceSettings<ElasticsearchOptions>);
 
       ctx.backendSrv.datasourceRequest = jest.fn(options => {
         requestOptions = options;
@@ -142,15 +153,110 @@ describe('ElasticDatasource', function(this: any) {
     });
   });
 
+  describe('When issuing logs query with interval pattern', () => {
+    let query, queryBuilderSpy;
+
+    beforeEach(async () => {
+      createDatasource({
+        url: 'http://es.com',
+        database: 'mock-index',
+        jsonData: { interval: 'Daily', esVersion: 2, timeField: '@timestamp' } as ElasticsearchOptions,
+      } as DataSourceInstanceSettings<ElasticsearchOptions>);
+
+      ctx.backendSrv.datasourceRequest = jest.fn(options => {
+        return Promise.resolve({
+          data: {
+            responses: [
+              {
+                aggregations: {
+                  '2': {
+                    buckets: [
+                      {
+                        doc_count: 10,
+                        key: 1000,
+                      },
+                      {
+                        doc_count: 15,
+                        key: 2000,
+                      },
+                    ],
+                  },
+                },
+                hits: {
+                  hits: [
+                    {
+                      '@timestamp': ['2019-06-24T09:51:19.765Z'],
+                      _id: 'fdsfs',
+                      _type: '_doc',
+                      _index: 'mock-index',
+                      _source: {
+                        '@timestamp': '2019-06-24T09:51:19.765Z',
+                        host: 'djisaodjsoad',
+                        message: 'hello, i am a message',
+                      },
+                      fields: {
+                        '@timestamp': ['2019-06-24T09:51:19.765Z'],
+                      },
+                    },
+                    {
+                      '@timestamp': ['2019-06-24T09:52:19.765Z'],
+                      _id: 'kdospaidopa',
+                      _type: '_doc',
+                      _index: 'mock-index',
+                      _source: {
+                        '@timestamp': '2019-06-24T09:52:19.765Z',
+                        host: 'dsalkdakdop',
+                        message: 'hello, i am also message',
+                      },
+                      fields: {
+                        '@timestamp': ['2019-06-24T09:52:19.765Z'],
+                      },
+                    },
+                  ],
+                },
+              },
+            ],
+          },
+        });
+      });
+
+      query = {
+        range: {
+          from: toUtc([2015, 4, 30, 10]),
+          to: toUtc([2019, 7, 1, 10]),
+        },
+        targets: [
+          {
+            alias: '$varAlias',
+            refId: 'A',
+            bucketAggs: [{ type: 'date_histogram', settings: { interval: 'auto' }, id: '2' }],
+            metrics: [{ type: 'count', id: '1' }],
+            query: 'escape\\:test',
+            interval: '10s',
+            isLogsQuery: true,
+            timeField: '@timestamp',
+          },
+        ],
+      };
+
+      queryBuilderSpy = jest.spyOn(ctx.ds.queryBuilder, 'getLogsQuery');
+      await ctx.ds.query(query);
+    });
+
+    it('should call getLogsQuery()', () => {
+      expect(queryBuilderSpy).toHaveBeenCalled();
+    });
+  });
+
   describe('When issuing document query', () => {
     let requestOptions, parts, header;
 
     beforeEach(() => {
       createDatasource({
         url: 'http://es.com',
-        index: 'test',
-        jsonData: { esVersion: '2' },
-      });
+        database: 'test',
+        jsonData: { esVersion: 2 } as ElasticsearchOptions,
+      } as DataSourceInstanceSettings<ElasticsearchOptions>);
 
       ctx.backendSrv.datasourceRequest = jest.fn(options => {
         requestOptions = options;
@@ -187,7 +293,11 @@ describe('ElasticDatasource', function(this: any) {
 
   describe('When getting fields', () => {
     beforeEach(() => {
-      createDatasource({ url: 'http://es.com', index: 'metricbeat', jsonData: { esVersion: 50 } });
+      createDatasource({
+        url: 'http://es.com',
+        database: 'metricbeat',
+        jsonData: { esVersion: 50 } as ElasticsearchOptions,
+      } as DataSourceInstanceSettings<ElasticsearchOptions>);
 
       ctx.backendSrv.datasourceRequest = jest.fn(options => {
         return Promise.resolve({
@@ -279,7 +389,11 @@ describe('ElasticDatasource', function(this: any) {
 
   describe('When getting fields from ES 7.0', () => {
     beforeEach(() => {
-      createDatasource({ url: 'http://es.com', index: 'genuine.es7._mapping.response', jsonData: { esVersion: 70 } });
+      createDatasource({
+        url: 'http://es.com',
+        database: 'genuine.es7._mapping.response',
+        jsonData: { esVersion: 70 } as ElasticsearchOptions,
+      } as DataSourceInstanceSettings<ElasticsearchOptions>);
 
       ctx.backendSrv.datasourceRequest = jest.fn(options => {
         return Promise.resolve({
@@ -430,9 +544,9 @@ describe('ElasticDatasource', function(this: any) {
     beforeEach(() => {
       createDatasource({
         url: 'http://es.com',
-        index: 'test',
-        jsonData: { esVersion: '5' },
-      });
+        database: 'test',
+        jsonData: { esVersion: 5 } as ElasticsearchOptions,
+      } as DataSourceInstanceSettings<ElasticsearchOptions>);
 
       ctx.backendSrv.datasourceRequest = jest.fn(options => {
         requestOptions = options;
@@ -473,9 +587,9 @@ describe('ElasticDatasource', function(this: any) {
     beforeEach(() => {
       createDatasource({
         url: 'http://es.com',
-        index: 'test',
-        jsonData: { esVersion: '5' },
-      });
+        database: 'test',
+        jsonData: { esVersion: 5 } as ElasticsearchOptions,
+      } as DataSourceInstanceSettings<ElasticsearchOptions>);
 
       ctx.backendSrv.datasourceRequest = jest.fn(options => {
         requestOptions = options;

public/app/plugins/datasource/elasticsearch/specs/elastic_response.test.ts

@@ -784,4 +784,94 @@ describe('ElasticResponse', () => {
       expect(result.data[2].datapoints[1][0]).toBe(12);
     });
   });
+
+  describe('simple logs query and count', () => {
+    beforeEach(() => {
+      targets = [
+        {
+          refId: 'A',
+          metrics: [{ type: 'count', id: '1' }],
+          bucketAggs: [{ type: 'date_histogram', settings: { interval: 'auto' }, id: '2' }],
+          context: 'explore',
+          interval: '10s',
+          isLogsQuery: true,
+          key: 'Q-1561369883389-0.7611823271062786-0',
+          live: false,
+          maxDataPoints: 1620,
+          query: '',
+          timeField: '@timestamp',
+        },
+      ];
+      response = {
+        responses: [
+          {
+            aggregations: {
+              '2': {
+                buckets: [
+                  {
+                    doc_count: 10,
+                    key: 1000,
+                  },
+                  {
+                    doc_count: 15,
+                    key: 2000,
+                  },
+                ],
+              },
+            },
+            hits: {
+              hits: [
+                {
+                  _id: 'fdsfs',
+                  _type: '_doc',
+                  _index: 'mock-index',
+                  _source: {
+                    '@timestamp': '2019-06-24T09:51:19.765Z',
+                    host: 'djisaodjsoad',
+                    message: 'hello, i am a message',
+                  },
+                  fields: {
+                    '@timestamp': ['2019-06-24T09:51:19.765Z'],
+                  },
+                },
+                {
+                  _id: 'kdospaidopa',
+                  _type: '_doc',
+                  _index: 'mock-index',
+                  _source: {
+                    '@timestamp': '2019-06-24T09:52:19.765Z',
+                    host: 'dsalkdakdop',
+                    message: 'hello, i am also message',
+                  },
+                  fields: {
+                    '@timestamp': ['2019-06-24T09:52:19.765Z'],
+                  },
+                },
+              ],
+            },
+          },
+        ],
+      };
+
+      result = new ElasticResponse(targets, response).getLogs();
+    });
+
+    it('should return histogram aggregation and documents', () => {
+      expect(result.data.length).toBe(2);
+      expect(result.data[0].fields).toContainEqual({ name: '@timestamp', type: 'time' });
+      expect(result.data[0].fields).toContainEqual({ name: 'host', type: 'string' });
+      expect(result.data[0].fields).toContainEqual({ name: 'message', type: 'string' });
+      result.data[0].rows.forEach((row, i) => {
+        expect(row).toContain(response.responses[0].hits.hits[i]._id);
+        expect(row).toContain(response.responses[0].hits.hits[i]._type);
+        expect(row).toContain(response.responses[0].hits.hits[i]._index);
+        expect(row).toContain(JSON.stringify(response.responses[0].hits.hits[i]._source, undefined, 2));
+      });
+
+      expect(result.data[1]).toHaveProperty('name', 'Count');
+      response.responses[0].aggregations['2'].buckets.forEach(bucket => {
+        expect(result.data[1].rows).toContainEqual([bucket.doc_count, bucket.key]);
+      });
+    });
+  });
 });

public/app/plugins/datasource/elasticsearch/specs/query_builder.test.ts

@@ -490,4 +490,10 @@ describe('ElasticQueryBuilder', () => {
     const query = builder6x.getTermsQuery({});
     expect(query.aggs['1'].terms.order._key).toBe('asc');
   });
+
+  it('getTermsQuery should request documents and date histogram', () => {
+    const query = builder.getLogsQuery({});
+    expect(query).toHaveProperty('query.bool.filter');
+    expect(query.aggs['2']).toHaveProperty('date_histogram');
+  });
 });

public/app/plugins/datasource/elasticsearch/types.ts

+import { DataQuery, DataSourceJsonData } from '@grafana/ui';
+
+export interface ElasticsearchOptions extends DataSourceJsonData {
+  timeField: string;
+  esVersion: number;
+  interval: string;
+  timeInterval: string;
+  maxConcurrentShardRequests?: number;
+  logMessageField?: string;
+  logLevelField?: string;
+}
+
+export interface ElasticsearchAggregation {
+  id: string;
+  type: string;
+  settings?: any;
+  field?: string;
+}
+
+export interface ElasticsearchQuery extends DataQuery {
+  isLogsQuery: boolean;
+  alias?: string;
+  query?: string;
+  bucketAggs?: ElasticsearchAggregation[];
+  metrics?: ElasticsearchAggregation[];
+}