Scenario 6 - Integrating with Data Sources

This is a tutorial that is part of a series and can be used as a standalone tutorial on how to integrate with Data Sources. For more details on the scenario and general prerequisites, please see the scenario overview page.

Time to Complete : 5 minutes

User story

RailCo HR department is planning to develop an HR system dashboard. Therefore, Railco wants to create REST APIs to expose their Employee Database as a service where users can add, delete, update and view employee details.

With ESB Micro Integrator Data Services, users can integrate with different Data Sources and decouple the data from its infrastructure. In other words, when you create a data service in ESB Micro Integrator, the data that is stored in a storage system (such as the RDBMS) can be exposed in the form of a service. This allows users (that may be any application or system) to access the data without interacting with the original source of the data.

Expose Datasource

Step 1: Develop a service in Micro Integrator

To develop a service in Micro Integrator, you can use ESB Integration Studio.

Integration Studio Dataservice View

Step 2: Expose data via ESB

Once developed, you can expose the data via API manager for secure access. For simplicity, the data service is already developed and added in the API manager. A database has been created with dummy Employee Data that you can query and modify.

Employee Database

Step 3: Invoke the API

To invoke the API from ESB,

  1. Go to https://localhost:9443/devportal/ Developer Portal and select RailCo tenant domain. This will redirect you to RailCo’s Developer Portal.
  2. Sign in with a RailCo tenant, Developer Portal user. Use user as tom@railco.com and password as user123.
  3. Click on RailCoEmployeeAPI and click subscribe using a policy and generate the access token.

  4. After that you can try out the CRUD operations on the EmployeeAPI.

    Employee API resources

    For e.g., you can try out the following Curl request.

    curl -k -X GET 'https://localhost:8243/t/railco.com/operations/data/employees/1.0.0/employees/2' \
--header 'Accept: application/json' \
--header 'Authorization: Bearer <Access Token>'

What's next

Try out the next scenario in the series, Analytics.

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