When deploying an ARM template using resource iteration, I'd like to pass the resource properties as an object.
Doing this would allow for a different set of parameters to exist within each element the copy array. The reason for this is because some properties may need to be conditionally included or excluded depending on the values of others. For example, in the case of an API Management product, the documentation states the following with regard to the subscriptionsLimit
property -
Can be present only if subscriptionRequired property is present and has a value of false.
However, when deploying the example template below the deployment hangs in Azure. Looking in to the related events, I can see that the action the deploy the resource keeps failing with an Internal Server Error (500), but there are no additional details.
If I refer to each parameter in the properties
object using variables('productsJArray')[copyIndex()].whatever
then the deployment succeeds. However, this is undesirable as it means that every properties
object would have to contain identical parameters, which is not always permissible and may cause the deployment to fail.
Example template
Note that I've output variables('productsJArray')[copyIndex()]
and it is a valid object. I've even copied the output in to the template and deployed it successfully.
{
"$schema": "http://schema.management.azure.com/schemas/2015-01-01/deploymentTemplate.json#",
"contentVersion": "1.0.0.0",
"parameters": {
"apiManagementServiceName": {
"type": "string",
"metadata": {
"description": "The name of the API Management instance."
}
},
"productsJson": {
"type": "string",
"metadata": {
"description": "A JSON representation of the Products to add."
}
}
},
"variables": {
"productsJArray": "[json(parameters('productsJson'))]"
},
"resources": [
{
"condition": "[greater(length(variables('productsJArray')), 0)]",
"type": "Microsoft.ApiManagement/service/products",
"name": "[concat(parameters('apiManagementServiceName'), '/', variables('productsJArray')[copyIndex()].name)]",
"apiVersion": "2018-06-01-preview",
"properties": "[variables('productsJArray')[copyIndex()]]",
"copy": {
"name": "productscopy",
"count": "[if(greater(length(variables('productsJArray')), 0), length(variables('productsJArray')), 1)]"
}
}
]
}
Example parameters
{
"$schema": "http://schema.management.azure.com/schemas/2015-01-01/deploymentParameters.json#",
"contentVersion": "1.0.0.0",
"parameters": {
"apiManagementServiceName": {
"value": "my-api-management"
},
"productsJson": {
"value": "[{\"name\":\"my-product\",\"displayName\":\"My Product\",\"description\":\"My product is awesome.\",\"state\":\"published\",\"subscriptionRequired\":true,\"approvalRequired\":false}]"
}
}
}
Output of variable 'productsJArray[0]'
"outputs": {
"properties": {
"type": "Object",
"value": {
"approvalRequired": false,
"description": "My product is awesome.",
"displayName": "My Product",
"name": "my-product",
"state": "published",
"subscriptionRequired": true
}
}
}
[variables('productsJArray')[copyIndex()]]
, showing that it is a valid object. Thanks. – David GardsubscriptionsLimit
doesnt exist here, although you said it should be there? I think I know where this is going anyway – 4c74356b41properties
results in a working deployment - however referencingvariables('productsJArray')[copyIndex()]
results in a failed deployment.subscriptionsLimit
doesn't need to exist; I just used it as an example of a parameter that either must or must not exist in the properties object depending on the value of another parameter. In my example,subscriptionRequired
has a value oftrue
, and sosubscriptionsLimit
must not exist. Thanks. – David Gard