added healthcheck api

backend/applications/src/app/controllers/form.controller.ts

@@ -15,13 +15,13 @@ export class FormController {
    * @returns form count
    */
   @Get('health')
-  async getFormCount(): Promise<number> {
-    const formCount = await this.formService.formCount();
+  async healthCheck(): Promise<number> {
+    const formCount = await this.formService.healthCheck();
 
-    if (formCount == 0) {
+    if (!formCount) {
       return Promise.reject({
         statusCode: 404,
-        message: 'Form data not found',
+        message: 'Table not found',
       });
     }
     return formCount;

backend/applications/src/app/services/form.service.ts

@@ -10,11 +10,20 @@ export class FormService {
   ) { }
 
   /**
-   * Gets count of submitted forms
+   * Checks if table exists
    * @returns form count
    */
-  async formCount(): Promise<number> {
-    return this.formRepository.count();
+  async healthCheck(): Promise<any> {
+    const tableExists = (
+      await this.formRepository.manager.query(
+        `SELECT exists (
+      SELECT FROM information_schema.tables
+        WHERE  table_schema = 'epd_applications'
+        AND    table_name   = 'form'
+        )`,
+      )
+    )[0].exists;
+    return tableExists;
   }
 
   /**