Using CA AppLogic® › Application Architect Guide › Creating Applications on Standard Infrastructure

Creating Applications on Standard Infrastructure

This topic describes how to design and create a new application on standard infrastructure. Standard infrastructure refers to ready-made appliances contained in one or more catalogs or located in the Cloud Commons marketplace.

The following sections explain the process for creating applications on a standard infrastructure.

Creating an empty application

1. Click the New button in the applications tab.
2. Enter a unique name for the application.

   The application is created.

   Note: You can click the application name in the list to open it for editing.

Determine application boundary

The boundary of the application refers to what network services the application will provide and what network services the application will need. Network services provided by the application are its inputs and network services needed by the application are its outputs. Note the following:

• For each input, drag-and-drop an input gateway (IN) appliance from the system catalog onto the canvas.
• For each output, drag-and-drop an output gateway (OUT or NET) appliance from the system catalog onto the canvas.

  Configure each of the input and output gateway appliances by double-clicking on an appliance shape on the canvas or right-clicking on the appliance shape and click Attributes, Resources, User Volumes or Property Values from the menu.

Create application volumes

The next step is to create the application volumes where you can place the code, scripts, content and databases that are specific for your application. Note, that you can use an application volume with more than one appliance.

To create an application volume:

1. Right-click the application canvas and select Manage Volumes from the list.
2. Click the Add button
3. Enter the name of the volume, its size, and filesystem and click OK.
4. Repeat this procedure for each volume, as needed.

Assemble application infrastructure

The next step is to assemble the infrastructure you need between the inputs and the outputs of the application using appliances and servers from the catalogs. See Catalog Reference for list of available appliances.

Redirect Properties to application boundary

You can redirect configurable properties, volumes, and attributes of an appliance to the application as a whole to allow the settings to be configured from a single place. For example, an application has multiple instances of a specific appliance.

To define properties and volumes that are configurable on the application, right-click the canvas for the MAIN assembly and select 'Modify Application Boundary'. Refer to the Class Editor Property Sheet Quick Reference for details.

After defining the properties and volumes on the assembly, you then to configure each instance to redirect its properties to the assembly.