To reuse Log Analytics across subscriptions

Author: Vamshi-Microsoft

infra/deploy_ai_foundry.bicep

@@ -730,6 +730,7 @@ output aiProjectName string = aiHubProject.name
 output applicationInsightsId string = applicationInsights.id
 output logAnalyticsWorkspaceResourceName string = useExisting ? existingLogAnalyticsWorkspace.name : logAnalytics.name
 output logAnalyticsWorkspaceResourceGroup string = useExisting ? existingLawResourceGroup : resourceGroup().name
+output logAnalyticsWorkspaceSubscription string = useExisting ? existingLawSubscription : subscription().subscriptionId
 
 output storageAccountName string = storageNameCleaned
 

infra/deploy_post_deployment_scripts.bicep

@@ -18,11 +18,12 @@ param sqlUsers array = [
 ]
 param logAnalyticsWorkspaceResourceName string
 param logAnalyticsWorkspaceResourceGroup string
+param logAnalyticsWorkspaceSubscription string
 var resourceGroupName = resourceGroup().name
 
 resource logAnalytics 'Microsoft.OperationalInsights/workspaces@2020-10-01' existing = {
   name: logAnalyticsWorkspaceResourceName
-  scope: resourceGroup(logAnalyticsWorkspaceResourceGroup)
+  scope: resourceGroup(logAnalyticsWorkspaceSubscription, logAnalyticsWorkspaceResourceGroup)
 }
 
 resource containerAppEnv 'Microsoft.App/managedEnvironments@2022-03-01' = {

infra/main.bicep

@@ -169,6 +169,7 @@ module uploadFiles 'deploy_post_deployment_scripts.bicep' = {
     keyVaultName:aifoundry.outputs.keyvaultName
     logAnalyticsWorkspaceResourceName: aifoundry.outputs.logAnalyticsWorkspaceResourceName
     logAnalyticsWorkspaceResourceGroup: aifoundry.outputs.logAnalyticsWorkspaceResourceGroup
+    logAnalyticsWorkspaceSubscription: aifoundry.outputs.logAnalyticsWorkspaceSubscription
     sqlServerName: sqlDBModule.outputs.sqlServerName
     sqlDbName: sqlDBModule.outputs.sqlDbName
     sqlUsers: [