workspaces.json

{
    "if": {
      "field": "type",
      "equals": "Microsoft.DesktopVirtualization/workspaces"
    },
    "then": {
      "effect": "[parameters('effect')]",
      "details": {
        "type": "Microsoft.Insights/diagnosticSettings",
        "name": "[parameters('profileName')]",
        "roleDefinitionIds": [
            "/providers/Microsoft.Authorization/roleDefinitions/b24988ac-6180-42a0-ab88-20f7382dd24c"
          ],
        "existenceCondition": {
          "allOf": [
            {
              "field": "Microsoft.Insights/diagnosticSettings/logs.enabled",
              "equals": "[parameters('logsEnabled')]"
            }
          ]
        },
        "deployment": {
          "properties": {
            "mode": "incremental",
            "template": {
              "$schema": "http://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
              "contentVersion": "1.0.0.0",
              "parameters": {
                "resourceName": {
                  "type": "string"
                },
                "location": {
                  "type": "string"
                },
                "logAnalytics": {
                  "type": "string"
                },
                "logsEnabled": {
                  "type": "string"
                },
                "profileName": {
                  "type": "string"
                }
              },
              "variables": {},
              "resources": [
                {
                  "type": "Microsoft.DesktopVirtualization/workspaces/providers/diagnosticSettings",
                  "apiVersion": "2017-05-01-preview",
                  "name": "[concat(parameters('resourceName'), '/', 'Microsoft.Insights/', parameters('profileName'))]",
                  "location": "[parameters('location')]",
                  "dependsOn": [],
                  "properties": {
                    "workspaceId": "[parameters('logAnalytics')]",
                    "logs": [
                      {
                          "category": "AllLogs",
                          "enabled": true
                      }
                    ]
                  }
                }
              ],
              "outputs": {}
            },
            "parameters": {
              "location": {
                "value": "[field('location')]"
              },
              "resourceName": {
                "value": "[field('name')]"
              },
              "logAnalytics": {
                "value": "[parameters('logAnalytics')]"
              },
              "logsEnabled": {
                "value": "[parameters('logsEnabled')]"
              },
              "profileName": {
                "value": "[parameters('profileName')]"
              }
            }
          }
        }
      }
    }
  }