7.2

8. cpu: 1
9. memory:
10. min: 512
11. max: 8192
12. os_type: Linux
13. os_distribution: rhel
14. action: LinkedClone
15. archive_days: 1
16. provisioning_workflow: {id: CloneWorkflow}
17. lease_days: 3
18. source_machine_name: cbp_centos_63_x86
19. cost_center: sales
20. _cluster: 2
21. apache:
22. type: Software.Apache
23. data:
24. host: '${_resource~web}'
25. http_port: 8080
Each of these lines plays an important role in the blueprint structure.
n
Lines 1 - 4 represent possible top level blueprint elds that provide identifying information. The only
other possible eld is description. The semantics of these elds is straightforward, but you can refer to
java.classBlueprintDocument for more information.
n
Line 4 represents the blueprint components. Each key under components is the ID of the component
that must be unique under the current blueprint.
n
Lines 5 - 19 correspond to the Web component. The following appear under any component data:
n
The key type is mandatory and must refer to the component type on which the current component
is based.
n
The key dependsOn is optional and contains the list of component IDs current component depends
on. Component dependencies are extracted automatically based on property binding expressions.
In most cases, you do not need to explicitly specify component dependencies.
n
The key data denes the component conguration and appears under all component data.
n
Key is the name of the property or eld of that component. This can be a property dened in
the corresponding component type.
Property or field option Example
A property dened in the corresponding
component type
cpu
A reserved property
_cluster
Custom property
cost_center
n
The value of the eld can be directly dened as in cpu: 2, or you can denes its constraints, as
done for the memory eld in the example.
n
Line 16 shows how to specify and entity reference eld. The available sub-keys are id and label.
n
Line 24 depicts several things.
n
${<field_path>} provides a way to express the value of a eld to come from another eld.
n
_resource is a reserved eld ID that captures the output of entire blueprint. Output from each
component is exposed under the same key as component ID. So in this case, host value is set to the
output of the web component thus saying the apache component needs to be hosted on machine
provisioned from the web component.
Programming Guide
352 VMware, Inc.