[INV-3663] Create Common Database Class

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Overview

This PR includes the following proposed change(s):

First pass

• Compartmentalize Database functionality into class

  • Class connects to DB
  • Class Runs Queries, returning responses
  • Class can be configured to fire logs, removing need for logger object to be used

• Converted Email Settings/Templates to use new Error Handler and CommonDatabase class

  • Showcases cutback on code, highlights functionality.

• Closes #3663

Examples

Having an Error occur in a response

function getEmailTemplates(): RequestHandler {
  return async (req, res) => {
    const response = await new CommonDatabase().query(getEmailTemplatesSQL());
    throw new Error('Error Occurring in Function');
    return res.status(200).json({
      message: 'Email templates retrieved',
      result: response?.rows,
      namespace: req.url,
      req: req.body
    });
  };
}

Error Handling Middleware kicks in

Throwing an Error in the CommonDatabase

  public readonly query = async (sqlStatement: SQLStatement): Promise<any> => {
    let connection: PoolClient;
    try {
      connection = await this.getDBConnection();
      if (this.logDetails) {
        this.log();
      }
      throw new Error('Error Occurring in Function');
      return await connection.query(sqlStatement.text, sqlStatement.values);
    } catch (e) {
      throw new CustomError(e?.message || 'Connection Refused', 503);
    } finally {
      connection?.release();
    }
  };
}

The API Handles the error and continues to run, changing the status code to one we defined in CustomError

[sonarcloud[bot]]

Quality Gate failed

Failed conditions
1 Security Hotspot
0.0% Coverage on New Code (required ≥ 80%)

See analysis details on SonarQube Cloud