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DTOSS-12524: Add logic-app-slack-alert module for Azure Monitor Slack notifications
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‎infrastructure/modules/app-insights/tfdocs.md‎

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Default: `{}`
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### <a name="input_use_log_based_exception_alert"></a> [use\_log\_based\_exception\_alert](#input\_use\_log\_based\_exception\_alert)
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Description: Replace the default metric-based exceptions alert with a log-based scheduled query alert.
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The log-based alert projects exception type, message, affected URL, and operation ID,
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which enables the Slack notification transformer to include those fields directly.
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Existing consumers of this module are unaffected — the default retains the metric alert.
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Type: `bool`
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Default: `false`
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## Outputs
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The following outputs are exported:
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### <a name="output_app_id"></a> [app\_id](#output\_app\_id)
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Description: The Application ID (GUID) used to authenticate with the App Insights REST API.
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### <a name="output_connection_string"></a> [connection\_string](#output\_connection\_string)
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Description: n/a
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- [azurerm_application_insights.appins](https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/application_insights) (resource)
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- [azurerm_monitor_metric_alert.exceptions](https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/monitor_metric_alert) (resource)
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- [azurerm_monitor_scheduled_query_rules_alert_v2.exceptions](https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/monitor_scheduled_query_rules_alert_v2) (resource)

‎infrastructure/modules/logic-app-slack-alert/main.tf‎

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resource "azurerm_logic_app_workflow" "this" {
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name = var.name
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resource_group_name = var.resource_group_name
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location = var.location
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workflow_parameters = {
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"slackWebhookUrl" = jsonencode({
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type = "SecureString"
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defaultValue = ""
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})
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}
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parameters = {
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"slackWebhookUrl" = var.slack_webhook_url
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}
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}
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resource "azurerm_logic_app_trigger_http_request" "this" {
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name = "When_an_HTTP_request_is_received"
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logic_app_id = azurerm_logic_app_workflow.this.id
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method = "POST"
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schema = jsonencode({
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"$schema" = "http://json-schema.org/draft-04/schema#"
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type = "object"
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properties = {
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schemaId = { type = "string" }
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data = {
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type = "object"
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properties = {
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essentials = {
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type = "object"
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properties = {
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alertRule = { type = "string" }
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severity = { type = "string" }
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firedDateTime = { type = "string" }
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resolvedDateTime = { type = "string" }
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monitorCondition = { type = "string" }
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description = { type = "string" }
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alertTargetIDs = {
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type = "array"
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items = { type = "string" }
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}
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configurationItems = {
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type = "array"
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items = { type = "string" }
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}
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}
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}
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}
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}
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}
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})
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}
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resource "azurerm_logic_app_action_custom" "post_to_slack" {
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name = "Post_to_Slack"
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logic_app_id = azurerm_logic_app_workflow.this.id
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body = <<-BODY
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{
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"type": "Http",
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"inputs": {
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"method": "POST",
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"uri": "@parameters('slackWebhookUrl')",
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"headers": {
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"Content-Type": "application/json"
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},
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"body": {
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"blocks": [
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{
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"type": "header",
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"text": {
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"type": "plain_text",
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"text": "@{if(equals(triggerBody()?['data']?['essentials']?['monitorCondition'], 'Resolved'), concat('✅ Resolved – ', triggerBody()?['data']?['essentials']?['alertRule']), concat('🚨 Alert – ', triggerBody()?['data']?['essentials']?['alertRule']))}",
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"emoji": true
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}
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},
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{
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"type": "section",
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"fields": [
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{
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"type": "mrkdwn",
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"text": "@{concat('*Severity*\n', triggerBody()?['data']?['essentials']?['severity'])}"
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},
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{
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"type": "mrkdwn",
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"text": "@{concat('*Status*\n', triggerBody()?['data']?['essentials']?['monitorCondition'])}"
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},
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{
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"type": "mrkdwn",
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"text": "@{concat('*Fired At*\n', triggerBody()?['data']?['essentials']?['firedDateTime'])}"
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},
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{
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"type": "mrkdwn",
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"text": "@{concat('*Resource*\n`', coalesce(triggerBody()?['data']?['essentials']?['configurationItems']?[0], 'N/A'), '`')}"
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}
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]
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},
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{
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"type": "section",
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"text": {
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"type": "mrkdwn",
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"text": "@{concat('*Description*\n> ', coalesce(triggerBody()?['data']?['essentials']?['description'], 'N/A'))}"
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}
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},
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{
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"type": "section",
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"text": {
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"type": "mrkdwn",
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"text": "@{if(contains(triggerBody()?['data']?['essentials']?['alertTargetIDs']?[0], 'microsoft.insights/components'), concat(':mag: <https://portal.azure.com/#resource', triggerBody()?['data']?['essentials']?['alertTargetIDs']?[0], '/failures|View Failures in App Insights>'), concat(':mag: <https://portal.azure.com/#resource', triggerBody()?['data']?['essentials']?['alertTargetIDs']?[0], '|View Resource in Azure Portal>'))}"
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}
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}
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]
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}
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},
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"runAfter": {}
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}
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BODY
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depends_on = [azurerm_logic_app_trigger_http_request.this]
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}

‎infrastructure/modules/logic-app-slack-alert/outputs.tf‎

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output "trigger_callback_url" {
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description = "HTTP trigger callback URL to register with an Azure Monitor action group webhook receiver."
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value = azurerm_logic_app_trigger_http_request.this.callback_url
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sensitive = true
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}

‎infrastructure/modules/logic-app-slack-alert/tfdocs.md‎

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# Module documentation
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## Required Inputs
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The following input variables are required:
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### <a name="input_location"></a> [location](#input\_location)
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Description: Azure region in which to create the Logic App.
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Type: `string`
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### <a name="input_name"></a> [name](#input\_name)
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Description: Name of the Logic App workflow.
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Type: `string`
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### <a name="input_resource_group_name"></a> [resource\_group\_name](#input\_resource\_group\_name)
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Description: Resource group in which to create the Logic App.
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Type: `string`
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### <a name="input_slack_webhook_url"></a> [slack\_webhook\_url](#input\_slack\_webhook\_url)
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Description: Slack incoming webhook URL. Stored as a SecureString workflow parameter.
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Type: `string`
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## Outputs
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The following outputs are exported:
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### <a name="output_trigger_callback_url"></a> [trigger\_callback\_url](#output\_trigger\_callback\_url)
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Description: HTTP trigger callback URL to register with an Azure Monitor action group webhook receiver.
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## Resources
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The following resources are used by this module:
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- [azurerm_logic_app_action_custom.post_to_slack](https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/logic_app_action_custom) (resource)
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- [azurerm_logic_app_trigger_http_request.this](https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/logic_app_trigger_http_request) (resource)
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- [azurerm_logic_app_workflow.this](https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/logic_app_workflow) (resource)

‎infrastructure/modules/logic-app-slack-alert/variables.tf‎

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variable "name" {
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type = string
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description = "Name of the Logic App workflow."
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}
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variable "resource_group_name" {
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type = string
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description = "Resource group in which to create the Logic App."
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}
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variable "location" {
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type = string
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description = "Azure region in which to create the Logic App."
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}
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variable "slack_webhook_url" {
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type = string
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description = "Slack incoming webhook URL. Stored as a SecureString workflow parameter."
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sensitive = true
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}

‎infrastructure/modules/virtual-desktop/tfdocs.md‎

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Default: `16`
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### <a name="input_principal_id"></a> [principal\_id](#input\_principal\_id)
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Description: The principal (object) ID to assign the 'Desktop Virtualization Power On Off Contributor' role to the host pool. If null, the role assignment will not be created. This maintains backward compatibility for existing deployments. The role is required for autoscaling but can be omitted if autoscaling is not used or the role is assigned manually.
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Type: `string`
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Default: `null`
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### <a name="input_source_image_from_gallery"></a> [source\_image\_from\_gallery](#input\_source\_image\_from\_gallery)
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Description: n/a
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The following resources are used by this module:
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- [azurerm_network_interface.this](https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/network_interface) (resource)
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- [azurerm_role_assignment.avd_autoscale_hostpool](https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/role_assignment) (resource)
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- [azurerm_role_assignment.dag_admins](https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/role_assignment) (resource)
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- [azurerm_role_assignment.dag_users](https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/role_assignment) (resource)
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- [azurerm_role_assignment.rg_admins](https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/role_assignment) (resource)

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