1 General
I created this as an exercise, hopefully this is useful for others too.
This workflow got developed and tested with vRealize Automation 7.1.
Expand
File: defineHostname.js
// ----------------------------------------------- GLOBAL SETTINGS -----------------------------------------------------
var fallback_hostname_number_length = 4;
// ----------------------------------------------- FUNCTIONS -----------------------------------------------------------
// fill numbers with leading zeros
function pad(n, width, z) {
z = z || '0';
n = n + '';
return n.length >= width ? n : new Array(width - n.length + 1).join(z) + n;
}
// ---------------------------------------------- GET DATA -------------------------------------------------------------
// Retrieve the machine properties
var machine = payload.get("machine");
// Check the machine properties exists
if(machine != null) {
// Retrieve the values required
virtualMachineId = machine.get("id");
}
var machineProperties = machine.get('properties');
//Read the hostname generated by vRA
newHostname = machine.get('name');
System.log(workflow.currentWorkflow.name+" Default hostname is "+newHostname);
var custom_hostname_prefix_group = machineProperties.get("Custom.Hostname.Prefix.Group");
var custom_hostname_prefix = machineProperties.get("Custom.Hostname.Prefix."+custom_hostname_prefix_group);
var custom_hostname_uppercase = machineProperties.get("Custom.Hostname.Prefix."+custom_hostname_prefix_group+".UpperCase");
// -------------------------------------------- CHECK DATA VALIDITY ----------------------------------------------------
// check hostname prefix validity
if(!custom_hostname_prefix){
throw("custom_hostname_prefix is null");
}else if(custom_hostname_prefix == ''){
throw("custom_hostname_prefix is empty");
}
// ------------------------------------ CONSTRUCT NEW HOSTNAME NUMBER --------------------------------------------------
// -----------------hostname number length------------------
var element_exists = false;
var element_name = custom_hostname_prefix.toLowerCase()+"_number_length";
for each(element in PrefixConfigElement.attributes){
if (element.name.toLowerCase() == element_name){
element_exists = true;
System.log("Configuration element "+PrefixConfigElement.name+" / "+element_name+" does exist" );
}
}
if(!element_exists){
System.warn("Configuration element "+PrefixConfigElement.name+" / "+element_name+" does not exist, so I create new one" );
PrefixConfigElement.setAttributeWithKey(element_name , fallback_hostname_number_length);
}
var custom_hostname_number_length = PrefixConfigElement.getAttributeWithKey(element_name.toLowerCase()).value;
// -----------------hostname number-------------------------
var element_exists = false;
var element_name = custom_hostname_prefix.toLowerCase()+"_number";
for each(element in PrefixConfigElement.attributes){
if (element.name.toLowerCase() == element_name){
element_exists = true;
System.log("Configuration element "+PrefixConfigElement.name+" / "+element_name+" does exist" );
}
}
if(!element_exists){
System.warn("Configuration element "+PrefixConfigElement.name+" / "+element_name+" does not exist, so I create new one" );
PrefixConfigElement.setAttributeWithKey(element_name , 1);
}else{
System.warn("Configuration element "+PrefixConfigElement.name+" / "+element_name+" does not exist, so I create new one" );
PrefixConfigElement.setAttributeWithKey(element_name , Number(PrefixConfigElement.getAttributeWithKey(element_name.toLowerCase()).value) + 1);
}
var custom_hostname_number = PrefixConfigElement.getAttributeWithKey(element_name.toLowerCase()).value;
// ------------------------------------ CONSTRUCT NEW HOSTNAME ---------------------------------------------------------
// Build new hostname
newHostname = custom_hostname_prefix+pad(custom_hostname_number, custom_hostname_number_length);
// set to upper case or lower case
var convertToUpperCase = (custom_hostname_uppercase == 'true');
if(convertToUpperCase){
newHostname= newHostname.toUpperCase()
}else{
newHostname= newHostname.toLowerCase()
}
System.log(workflow.currentWorkflow.name+" New hostname will be "+newHostname);
1.1 Concept
- Select DropDown "hostname set" as a property in vRA
- Store Hostname Numbers for every pattern as configuration element in vRO
- Store hostname number length as configuration element in vRO
- If configuration elements do not exist (eg. new pattern) create them automatically
- Make it easy to work with property group in vRA to add prefix collection to blueprint component
2 Configuration
2.1 Workflows
You can import my package from github:
https://github.com/joe-speedboat/vRealizeOrchestrator/blob/master/ch.bitbull.hostname.package
2.2 vRA Event Broker
Create new Subscription.
Add the following conditions:
- Data > Lifecycle state name Equals VMPSMasterWorkflow32.BuildingMachine
- Data > Lifecycle state phase Equals PRE
- Data > Machine > Machine type Equals Virtual Machine
Do not forget to hand over the properties from EB to vRO, by setting this custom property to Blueprint Component:
Extensibility.Lifecycle.Properties.VMPSMasterWorkflow32.BuildingMachine = *
2.3 Create Properties / Property Group
Create vRA properties like:
Note: PRD is a placeholder for a set of hostname prefixes
Extensibility.Lifecycle.Properties.VMPSMasterWorkflow32.BuildingMachine -> *
Custom.Hostname.Prefix.Group -> empty (set in property group)
Custom.Hostname.Prefix.PRD -> drop down list with needed prefixes
Custom.Hostname.Prefix.PRD.UpperCase -> [true|false] (as you need)
Below you can find an example:
Add all the needed patterns to the dropdown list
2.4 Final note
Now you can add the property group to a blueprint component and get the desired dropdown.
3 Links
