Modern Slavery Data Service

Provides a service layer to talk to a database to store and manage data for the modern slavery application

The main modern slavery service has the ability to save an application or read a saved application. In order to do this, it needs to use this modern-slavery-data-service.

Saving: The main application will send the data to this service as an end point. This service will connect to a database and store that data and respond back to the main application if successful

Reading: The main application will make a request to this modern-slavery-data-service. This service will then connect to the database, get the data back and send it to the main application if it is successful

Contents

1. Install & Run
   • Dependencies
   • PostgreSQL setup
   • Configuration settings
     • Standalone configuration settings
     • Main application configuration settings
   • Running the service in isolation

Install & Run

The application can be run on your local machine

Dependencies

You will need to have the following installed:

Node JS ( LTS Dubnium v10.x )

npm ( v6.x )

PostgreSQL ( v11.x )

PostgreSQL setup

An example script for a PostgreSQL database and table can be found here: examples/scripts/postgresql/create-test-database.sql You can use the instructions within the script to create a database with the default configurations found in config.js.

Configuration settings

If you wish to use this service in isolation (Standalone configuration settings), it can be run the using the configurations defined in the root of this service.

Alternatively you can pass configs defined in the main application (Main application configuration settings).

If no configuration is defined then the service will fallback to the default values defined in config.js.

Standalone configuration settings

Setup your .env file in the root of this directory to override the following variables based on the values you have setup on your local database installation.

DATA_SERVICE_MODEL - The database used; by default this is set to 'postgresql' the correlating model can be found in the modules folder '/modern-slavery-data-service/models/data-service-postgres.js'

PG_USER - The user name that will be used to connect to your database 

PG_PASSWORD - The password used to access the database

PG_HOST - The host address where the database can be found

PG_DATABASE - The database name

PG_DATABASE_TABLE - The database table used (We are only using one table currently)

PG_PORT -  Port number to access the database

See .env.example in the root of the project for this template

Main application configuration settings

If this service used in conjunction with the modern slavery application; then you will be able to set up environment variables and pass them to the functions exported by this service.

Add the environment variables defined in .env.example to the .env file in the root of the modern slavery application and they can be passed on to this service.

Running the service in isolation

Ensure your database is service is available and running.

Then to run the service use:

npm run dev

Currently running this command will ONLY insert the testData variable found in /modern-slavery-data-service/test.js into your database.

After the data has been inserted, the application will then try to read back the same data from the database.