Creating Blueprints

A blueprint is a model of the application’s topology and its operations implementation.

Cloudify Composer allows to display/edit the blueprint in two complementary ways:

Topology view

It provides visual representation showing used nodes and relations between them. You can access this view by clicking Topology option under the blueprint in Project view pane.

Topology view

You add and move node types on the canvas using drag and drop actions. The buttons on the top right of the canvas assist you in creating and viewing the topology:

Topology toolbar

Nodes types

All node types - both Cloudify built-in and provided by the imported plugins - are presented in the left pane called Stencils pane. Each type is displayed with an icon that is derived from its parent type.

You can also import your own node types by adding plugins. See Managing Plugins on how to add plugins to a blueprint.

Adding Nodes to a Blueprint

Select the node type that you require to add to the blueprint and drag it from the Stencil catalog to the canvas.

Cloudify Composer only allows you to perform valid actions.

Editing a Node

Click the node to display the node property panel. It includes the following components:

To close the panel, press Esc or click the close window icon on the top-right corner.

Working with Nodes

Setting interfaces

To select the operations that you require, click the Select Operation icon next to the implementation fields in the node’s Interfaces section on the right of the screen. The following dialog box is displayed:

Implementation tree

Defining relationships

To define a relationship between nodes, where the connector icon is displayed, draw a connecting line from the edge of one node type to the edge of another. Note that the connector icons show either relationships in or relationships out of a node type.

You can pull the relationship line so that it is displayed in the topology according to your preferences.

Click a relationship connector to display its properties for editing and configuring the relationship parameters.

Creating networks

To connect networks, subnets and ports to a platform node, click and drag a line from the VNIC square at the bottom of the node to the left (entry) side of the network. The connection is reflected as a colored square in the VNIC. Each square in the VNIC represents one connected network.

Connect to Network

Virtual IP

To define IP components, drag the relevant icon to the topology canvas then select the node to which you want to add the IP. 1. In the properties panel, click Network. 2. Under the Virtual IPs section, click Add virtual IP. 3. Select the required virtual IP from the dropdown list.
The IP component is added to the node’s VNIC area.

To remove a virtual IP associated with a node, select the node from which you want to remove the virtual IP. 1. In the properties panel, click Network. 2. Under the Virtual IPs section, locate the virtual IP to remove. 3. Click the X button next to its name to delete the IP.
You can also delete a virtual IP from the canvas by selecting it and clicking Delete in the properties panel. It is removed from all nodes on which it was configured.

Security Groups

To define a security group drag the relevant stencil to the topology canvas then click the node to add to the security group. 1. In the properties panel, click Network. 2. Under the security groups section, click Add security group. 3. Select the security group to add from the dropdown list.

To remove a security group associated with a node, click the node from which you want to remove the security group. 1. In the properties panel, click Network. 2. Under the Security Groups section, locate the security group to remove. 3. Click on the X button next to its name to remove the group.

You can also delete a security group from the canvas by selecting it and clicking Delete in the properties panel. It is removed from all nodes on which it was configured.

Creating a Group

You can group a number of components using the drag to select button. Select the required nodes and click on the create node group button to create a resource group in the Topology view.

The resource group is also created in the source code. You can click the group to display its properties and add or remove members.

create group

Intrinsic Functions

As in Cloudify Premium Manager, the values of node properties, inputs or outputs can be specified as intrinsic function return values. The intrinsic functions list is available at Intrinsic functions specification page.

Cloudify Composer auto-fills the functions and displays the available properties in the existing topology. Note that, for the get_attribute function you must be familiar with and use the run-time attributes’ names, not the auto-filled properties names. For example, to obtain a virtual IP address using the get_attribute function, use the run-time attribute VirtualIp_address, not the VirtualIP property.

Source view

Source view provides a representation of the generated TOSCA code behind the application modeling. You can open this file in two different ways:

Topology Source Code

It works two ways:

  1. Allows to see the currently generated blueprint based on all of the user inputs:

    • TOSCA definitions version
    • imports
    • blueprint description
    • inputs and outputs
    • custom node/relationship types created by user
    • nodes added to topology, including their properties, interfaces, network configuration and relationships between nodes
  2. Provides a possibility to edit or paste the blueprint source code directly. Cloudify Composer will parse it and reflect in the Topology view accordingly.

Saving resources

To save a modified source press the Save Source button in the top right corner of the editor. Cloudify Composer will then run a 2-step validation:

  1. Syntax of your source code
  2. Cloudify DSL rules validation

Switching views

Switching views

To switch to topology view press the Switch to Topology view button in the top right corner of the editor. Please note this button is available only for main blueprint file and is absent for other files.

Warning

If you write some illegal code, it will either not be reflected in the topology and anywhere in the Cloudify Composer or will throw an error.