Bicep - Pair arrays with loops

Question

My case is that I have a list of companies, as well as a list of queues that I want to pair together in my bicep file. I want to use the result to add queues to an service bus namespace.

This is an example of the queue array:

`var queues = [
  'first-queue'
  'second-queue'
  'third-queue'
]``

And this is an example of the company array:

`var companies = [
  'apple'
  'intel'
  'blizzard'
]``

I would like to loop through the company list with bicep syntax and insert the company name before each queue. In this case i want to have a result like bwlow:

`var res = [ 
  'apple-first-queue'
  'apple-second-queue'
  'apple-third-queue'
  'intel-first-queue'
  'intel-second-queue'
  'intel-third-queue'
  'blizzard-first-queue'
  'blizzard-second-queue'
  'blizzard-third-queue'
]`

I've tried a few different ways but can't get it to work. This is my latest attempt below where I get an error message regarding the syntax of "queuesToCreate" in the form of* "Directly referencing a resource or module collection is not currently supported. Apply an array indexer to the expression"*.

Does anyone see what I'm doing wrong here and can point me in the right direction?

`// ## Service bus multiple companies module ## //
module queuesToCreate 'service-bus-loop.bicep' = [for company in companies: {
name: 'multipleQueues-${company}'
  params: {
    company: company
  }
}]
`

``// ## Service bus namespace ## //
resource serviceBusNamespace 'Microsoft.ServiceBus/namespaces@2022-01-01-preview' = {
  name: serviceBusNamespaceName
  location: location
  sku: {
    name: skuName
  }
}

// ## Queues ## //
resource queues 'Microsoft.ServiceBus/namespaces/queues@2022-01-01-preview' = [for queueName in queuesToCreate: {
  parent: serviceBusNamespace
  name: queueName
  properties: {
    maxDeliveryCount: 1
    lockDuration: 'PT5M'
  }
}]`

This service-bus-loop.bicep file look like below and just returns an array as output

param company string
`// Create an array with the names of the queues
var queues = [
  '${company}-queue'
  '${company}-queue'
  '${company}-queue'
]

output res array = queues`

queuesToCreate variable has in above case an syntax error like "Directly referencing a resource or module collection is not currently supported. Apply an array indexer to the expression."

You could divide it up into modules and run the module for each company to create the queues. Thus you can have a loop on the module and inside that separate module loop on the resource creation for the queues to create each type of queue. — NotFound, Jan 31 '23 at 12:36
Hope this could help: https://stackoverflow.com/a/72739394/4167200 — Thomas, Jan 31 '23 at 18:57

score 1 · Answer 1 · answered Feb 02 '23 at 09:02

As suggested in the comment section, you could always use a module to create all the queues for a specific company.

// service-bus-queues.bicep
param serviceBusNamespaceName string
param company string
param queues array

resource serviceBusNamespace 'Microsoft.ServiceBus/namespaces@2022-01-01-preview' existing = {
  name: serviceBusNamespaceName
}

resource queuesToCreate 'Microsoft.ServiceBus/namespaces/queues@2022-01-01-preview' = [for queue in queues: {
  parent: serviceBusNamespace
  name: '${company}-${queue}'
  properties: {
    maxDeliveryCount: 1
    lockDuration: 'PT5M'
  }
}]

Then from you main, loop through companies.

// main.bicep
param serviceBusNamespaceName string
param location string
param skuName string

var queues = [
  'first-queue'
  'second-queue'
  'third-queue'
]

var companies = [
  'apple'
  'intel'
  'blizzard'
]

resource serviceBusNamespace 'Microsoft.ServiceBus/namespaces@2022-01-01-preview' = {
  name: serviceBusNamespaceName
  location: location
  sku: {
    name: skuName
  }
}

module queuesToCreate 'service-bus-queues.bicep' = [for company in companies: {
  name: 'multipleQueues-${company}'
  params: {
    serviceBusNamespaceName: serviceBusNamespace.name
    company: company
    queues: queues
  }
}]

Bicep - Pair arrays with loops

1 Answers1