feat(cubejs-server-core): add dbType to dataSources (#6089)

Author: wolfeeeg

packages/cubejs-api-gateway/test/index.test.ts

@@ -592,7 +592,7 @@ describe('API Gateway', () => {
           }
         }]
       },
-      { route: 'data-sources', successResult: { dataSources: ['default'] } },
+      { route: 'data-sources', successResult: { dataSources: [{ dataSource: 'default', dbType: 'postgres' }] } },
     ];
 
     testConfigs.forEach((config) => {

packages/cubejs-api-gateway/test/mocks.ts

@@ -143,7 +143,7 @@ export const compilerApi = jest.fn().mockImplementation(() => ({
 
   async dataSources() {
     return {
-      dataSources: ['default']
+      dataSources: [{ dataSource: 'default', dbType: 'postgres' }]
     };
   },
 }));

packages/cubejs-server-core/src/core/CompilerApi.js

@@ -232,7 +232,8 @@ export class CompilerApi {
       dataSources.map(async (dataSource) => {
         try {
           await orchestratorApi.driverFactory(dataSource);
-          return dataSource;
+          const dbType = await this.getDbType(dataSource);
+          return { dataSource, dbType };
         } catch (err) {
           return null;
         }

packages/cubejs-server-core/test/unit/index.test.ts

@@ -414,7 +414,11 @@ describe('index.test', () => {
       });
 
       expect(dataSources).toHaveProperty('dataSources');
-      expect(dataSources.dataSources).toEqual(['main']);
+      expect(dataSources.dataSources).toEqual([{
+        dataSource: 'main',
+        dbType: 'mysql',
+      }]);
+      
       expect(dataSourcesSpy).toHaveBeenCalled();
       dataSourcesSpy.mockClear();
     });