query optimizations

server/src/data_access_layer/mappers/data_warehouse/data/report_query_mapper.ts

@@ -1,7 +1,7 @@
 import Result from '../../../../common_classes/result';
 import Mapper from '../../mapper';
 import { PoolClient, QueryConfig } from 'pg';
-import ReportQuery from '../../../../domain_objects/data_warehouse/data/report_query';
+import ReportQuery, { CompletedQueryMatch } from '../../../../domain_objects/data_warehouse/data/report_query';
 
 const format = require('pg-format');
 
@@ -88,6 +88,12 @@ export default class ReportQueryMapper extends Mapper {
         return super.runStatement(this.deleteStatement(id), { transaction });
     }
 
+    CheckQueryExists(query: string): Promise<Result<CompletedQueryMatch>> {
+        return super.retrieve<CompletedQueryMatch>(this.checkQueryExistsStatement(query), {
+            resultClass: CompletedQueryMatch
+        });
+    }
+
     // Below are a set of query building functions. So far they're very simple
     // and the return value is something that the postgres driver can understand.
     // The hope is that this method will allow us to be more flexible and create
@@ -187,4 +193,18 @@ export default class ReportQueryMapper extends Mapper {
             values: [queryID, fileID],
         };
     }
+
+    private checkQueryExistsStatement(query: string): QueryConfig {
+        // compare a query with those in the database, sanitizing queries
+        // of extraneous whitespace and casing before comparison
+        // return {
+            const text = `SELECT rq.id, r.status_message
+            FROM report_queries rq JOIN reports r ON rq.report_id = r.id
+            WHERE r.status = 'completed'
+            AND LOWER(REGEXP_REPLACE(TRIM(rq.query), '\\s+', ' ', 'g')) = LOWER(REGEXP_REPLACE(TRIM($1), '\\s+', ' ', 'g'))
+            ORDER BY rq.created_at DESC LIMIT 1`;
+            const values = [query];
+        // }
+        return {text, values}
+    }
 }

server/src/data_access_layer/repositories/data_warehouse/data/report_query_repository.ts

@@ -1,5 +1,5 @@
 import RepositoryInterface, {QueryOptions, Repository} from '../../repository';
-import ReportQuery, { TimeseriesInitialRequest } from '../../../../domain_objects/data_warehouse/data/report_query';
+import ReportQuery, { ReportQueryMetadata, TimeseriesInitialRequest } from '../../../../domain_objects/data_warehouse/data/report_query';
 import Result from '../../../../common_classes/result';
 import ReportQueryMapper from '../../../mappers/data_warehouse/data/report_query_mapper';
 import {PoolClient} from 'pg';
@@ -72,17 +72,13 @@ export default class ReportQueryRepository extends Repository implements Reposit
         return Promise.resolve(Result.Success(true));
     }
 
+    // perform all necessary checks before kicking off the query including verifying
+    // all files are timeseries and checking for previously executed/select * queries
     async initiateQuery(containerID: string, dataSourceID: string, request: TimeseriesInitialRequest, user: User, describe: boolean): Promise<Result<string>> {
         // check that all files exist and are timeseries, return an error if not
         const isTimeseries = await this.#fileRepo.checkTimeseries(request.file_ids!);
         if (isTimeseries.isError) {return Promise.resolve(Result.Pass(isTimeseries))}
 
-        // create a new report object
-        const report = new Report({container_id: containerID});
-        const reportSaved = await this.#reportMapper.Create(user.id!, report);
-        if (reportSaved.isError) {return Promise.resolve(Result.Pass(reportSaved))}
-        const reportID = reportSaved.value.id!
-
         // formulate query if describe, check for presence of table name if regular query
         if (describe) {
             const describeQueries: string[] = [];
@@ -98,18 +94,70 @@ export default class ReportQueryRepository extends Repository implements Reposit
             }
         }
 
-        // create a report query based on the timeseries rust module query request
+        // create a new report object to return the ID if a SELECT * or repeated query is found
+        const reportSaved = await this.#reportMapper.Create(user.id!, new Report({container_id: containerID}));
+        if (reportSaved.isError) {return Promise.resolve(Result.Pass(reportSaved))}
+        const reportID = reportSaved.value.id!
+
+        // check if the query text was already successfully used in a previous query
+        // if so return the result file from that original query
+        const previousQueryResults = await this.#mapper.CheckQueryExists(request.query!);
+        // if an error is found, simply log and move on
+        if (previousQueryResults.isError) {
+            Logger.error(previousQueryResults.error.error);
+        }
+
+        if (previousQueryResults.value) {
+            // grab and use the previous status message for this report
+            void this.#reportRepo.setStatus(reportID, 'completed', previousQueryResults.value.status_message);
+
+            return Promise.resolve(Result.Success(reportID));
+        }
+
+        // create a query object if a previous query was not found
         const reportQuery = new ReportQuery({query: request.query!, report_id: reportID});
         const querySaved = await this.#mapper.Create(user.id!, reportQuery);
         if (querySaved.isError) { return Promise.resolve(Result.Pass(querySaved))}
         const queryID = querySaved.value.id!
 
-        // fetch file metadata
-        const fileInfo = await this.#fileRepo.listPathMetadata(...request.file_ids!);
-        if (fileInfo.isError) {return Promise.resolve(Result.Failure('unable to find file information'))}
-        const files = fileInfo.value;
+        // check if the query is a SELECT * query; if so return original file instead of querying
+        // verify there's only one file being queried
+        if (request.file_ids!.length === 1) {
+            const fileID = request.file_ids![0];
+            // trim and case densensitize query to eliminate any syntax variance
+            const normalizedQuery = request.query?.trim().replace(/\s+/g, ' ').replace(';', '').toLowerCase();
+            if (normalizedQuery === `select * from table_${fileID}`) {
+                // set the original file as the report file and return report ID
+                const resultSet = await this.setResultFile(reportID, queryID, fileID);
+                if (resultSet.isError) {
+                    const errorMessage = `error attaching record to report ${reportID}: ${resultSet.error.error}`;
+                    void this.#reportRepo.setStatus(reportID, 'error', errorMessage);
+                    Logger.error(errorMessage);
+                }
+
+                // if everything was successful, set the report status to completed
+                const successMessage = `results now available. Download them at "/containers/${containerID}/files/${fileID}/download"`;
+                void this.#reportRepo.setStatus(reportID, 'completed', successMessage);
+                return Promise.resolve(Result.Success(reportID));
+            }
+        }
+
+        const queryMetadata: ReportQueryMetadata = {
+            container_id: containerID,
+            data_source_id: dataSourceID,
+            request: request,
+            user: user,
+            report_id: reportID,
+            query: reportQuery,
+            query_id: queryID
+        }
+
+        // kickoff the query itself if there are no early return scenarios
+        return this.kickoffQuery(queryMetadata, describe);
+    }
 
-        // create a connection string based on the type of storage being used
+    // create a connection string based on the type of storage being used
+    async createConnectionString(containerID: string, dataSourceID: string): Promise<Result<string>> {
         const uploadPath = `containers/${containerID}/datasources/${dataSourceID}`;
         let storageConnection: string;
         if (Config.file_storage_method === 'filesystem') {
@@ -141,29 +189,46 @@ export default class ReportQueryRepository extends Repository implements Reposit
             return Promise.resolve(Result.Failure(`error: unsupported or unimplemented file storage method being used`));
         }
 
+        return Promise.resolve(Result.Success(storageConnection));
+    }
+
+    async kickoffQuery(queryMetadata: ReportQueryMetadata, describe: boolean): Promise<Result<string>> {
+        // fetch file metadata
+        const fileInfo = await this.#fileRepo.listPathMetadata(...queryMetadata.request.file_ids!);
+        if (fileInfo.isError) {return Promise.resolve(Result.Pass(fileInfo))}
+        const files = fileInfo.value;
+
+        const getConnString = await this.createConnectionString(queryMetadata.container_id, queryMetadata.data_source_id);
+        if (getConnString.isError) {return Promise.resolve(Result.Pass(getConnString))}
+        const storageConnection = getConnString.value;
+
         // set report status to "processing"
         let statusSet = await this.#reportRepo.setStatus(
-            reportID, 'processing',
-            `executing query ${queryID}: "${reportQuery.query}" as part of report ${reportID}`
+            queryMetadata.report_id, 'processing',
+            `executing query ${queryMetadata.query_id}: "${queryMetadata.query.query}" as part of report ${queryMetadata.report_id}`
         );
         if (statusSet.isError) {return Promise.resolve(Result.Failure(`unable to set report status`))}
 
         // kick off the describe or query process
         if (describe) {
-            this.processDescribe(reportID, request.query!, storageConnection, files as FileMetadata[]);
+            this.processDescribe(
+                queryMetadata.report_id, 
+                queryMetadata.request.query!, 
+                storageConnection, 
+                files as FileMetadata[]);
         } else {
             this.processQuery(
-                reportID,
-                request.query!,
+                queryMetadata.report_id,
+                queryMetadata.request.query!,
                 storageConnection,
                 files as FileMetadata[],
-                queryID,
-                user
+                queryMetadata.query_id,
+                queryMetadata.user
             );
         }
 
         // return report ID to the user so they can poll for results
-        return Promise.resolve(Result.Success(reportID));
+        return Promise.resolve(Result.Success(queryMetadata.report_id));
     }
 
     async processQuery(

server/src/data_access_layer/repositories/data_warehouse/etl/type_transformation_repository.ts

@@ -392,18 +392,12 @@ export default class TypeTransformationRepository extends Repository implements
             // if the data_source value for any given param is an old ID for an existing data source, replace it with the actual data source ID
             const backfillDataSources = (params: EdgeConnectionParameter[]) => {
                 params.forEach(param => {
-                    console.log('old param val', param.value);
                     if (param.value) {
                         // backfill old ID with new ID if present
                         const matchedSource = dataSources.find(src => src?.DataSourceRecord?.old_id === param.value);
-                        console.log('old id', matchedSource?.DataSourceRecord?.old_id);
-                        console.log('new id', matchedSource?.DataSourceRecord?.id);
                         if (matchedSource) param.value = matchedSource!.DataSourceRecord!.id!;
-                        console.log('new param val', param.value);
                     } else {
-                        console.log('dsID', dataSourceID);
                         param.value = dataSourceID;
-                        console.log('new param val', param.value);
                     }
                 })
             }

server/src/domain_objects/data_warehouse/data/report_query.ts

@@ -1,6 +1,7 @@
 import { BaseDomainClass } from "../../../common_classes/base_domain_class";
 import {IsArray, IsOptional, IsString} from 'class-validator';
 import Report from './report';
+import { User } from "../../access_management/user";
 
 /*
     ReportQuery represents a query and its execution status.
@@ -39,6 +40,26 @@ export default class ReportQuery extends BaseDomainClass{
     }
 }
 
+// input type for passing info between query methods
+export type ReportQueryMetadata = {
+    container_id: string;
+    data_source_id: string;
+    request: TimeseriesInitialRequest;
+    user: User;
+    report_id: string;
+    query: ReportQuery;
+    query_id: string;
+}
+
+// domain object for the results of checkQueryExists query
+export class CompletedQueryMatch {
+    @IsString()
+    query_id?: string;
+
+    @IsString()
+    status_message?: string;
+}
+
 // initial object used to create request for the timeseries rust module
 export class TimeseriesInitialRequest {
     @IsOptional()