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functions.tf
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resource "azurerm_log_analytics_workspace" "la_workspace" {
name = "${local.alphanumeric_prefix_name}-${local.alphanumeric_cluster_name}-workspace"
location = data.azurerm_resource_group.rg.location
resource_group_name = data.azurerm_resource_group.rg.name
sku = "PerGB2018"
retention_in_days = 30
lifecycle {
ignore_changes = [tags]
}
}
resource "azurerm_application_insights" "application_insights" {
name = "${var.prefix}-${var.cluster_name}-application-insights"
location = data.azurerm_resource_group.rg.location
resource_group_name = data.azurerm_resource_group.rg.name
workspace_id = azurerm_log_analytics_workspace.la_workspace.id
application_type = "web"
lifecycle {
ignore_changes = [tags]
}
}
resource "azurerm_monitor_diagnostic_setting" "insights_diagnostic_setting" {
name = "${var.prefix}-${var.cluster_name}-insights-diagnostic-setting"
target_resource_id = azurerm_application_insights.application_insights.id
storage_account_id = azurerm_storage_account.deployment_sa.id
log_analytics_workspace_id = azurerm_log_analytics_workspace.la_workspace.id
enabled_log {
category = "AppTraces"
retention_policy {
enabled = false
}
}
lifecycle {
ignore_changes = [metric,log_analytics_destination_type]
}
depends_on = [azurerm_linux_function_app.function_app,azurerm_log_analytics_workspace.la_workspace]
}
resource "azurerm_monitor_diagnostic_setting" "function_diagnostic_setting" {
name = "${var.prefix}-${var.cluster_name}-function-diagnostic-setting"
target_resource_id = azurerm_linux_function_app.function_app.id
storage_account_id = azurerm_storage_account.deployment_sa.id
log_analytics_workspace_id = azurerm_log_analytics_workspace.la_workspace.id
enabled_log {
category = "FunctionAppLogs"
retention_policy {
enabled = false
}
}
lifecycle {
ignore_changes = [metric,log_analytics_destination_type]
}
depends_on = [azurerm_linux_function_app.function_app,azurerm_log_analytics_workspace.la_workspace]
}
resource "azurerm_subnet" "subnet-delegation" {
name = "${var.prefix}-${var.cluster_name}-subnet-delegation"
resource_group_name = var.rg_name
virtual_network_name = data.azurerm_virtual_network.vnet.name
address_prefixes = [var.subnet_delegation]
delegation {
name = "subnet-delegation"
service_delegation {
name = "Microsoft.Web/serverFarms"
actions = ["Microsoft.Network/virtualNetworks/subnets/action"]
}
}
}
resource "azurerm_service_plan" "app_service_plan" {
name = "${var.prefix}-${var.cluster_name}-app-service-plan"
resource_group_name = data.azurerm_resource_group.rg.name
location = data.azurerm_resource_group.rg.location
os_type = "Linux"
sku_name = "EP2"
lifecycle {
ignore_changes = [tags]
}
}
locals {
stripe_width_calculated = var.cluster_size - var.protection_level - 1
stripe_width = local.stripe_width_calculated < 16 ? local.stripe_width_calculated : 16
}
locals {
location = data.azurerm_resource_group.rg.location
function_app_zip_name = "${var.function_app_dist}/${var.function_app_version}.zip"
weka_sa = "${var.function_app_storage_account_prefix}${local.location}"
weka_sa_container = "${var.function_app_storage_account_container_prefix}${local.location}"
}
locals {
function_code_path = "${path.module}/function-app/code"
function_app_code_hash = md5(join("", [for f in fileset(local.function_code_path, "**") : filemd5("${local.function_code_path}/${f}")]))
}
resource "azurerm_linux_function_app" "function_app" {
name = "${local.alphanumeric_prefix_name}-${local.alphanumeric_cluster_name}-function-app"
resource_group_name = data.azurerm_resource_group.rg.name
location = data.azurerm_resource_group.rg.location
service_plan_id = azurerm_service_plan.app_service_plan.id
storage_account_name = azurerm_storage_account.deployment_sa.name
storage_account_access_key = azurerm_storage_account.deployment_sa.primary_access_key
https_only = true
virtual_network_subnet_id = azurerm_subnet.subnet-delegation.id
site_config {
vnet_route_all_enabled = true
}
app_settings = {
"APPINSIGHTS_INSTRUMENTATIONKEY" = azurerm_application_insights.application_insights.instrumentation_key
"STATE_STORAGE_NAME" = azurerm_storage_account.deployment_sa.name
"STATE_CONTAINER_NAME" = azurerm_storage_container.deployment.name
"HOSTS_NUM" = var.cluster_size
"CLUSTER_NAME" = var.cluster_name
"PROTECTION_LEVEL" = var.protection_level
"STRIPE_WIDTH" = var.stripe_width != -1 ? var.stripe_width : local.stripe_width
"HOTSPARE" = var.hotspare
"VM_USERNAME" = var.vm_username
"COMPUTE_MEMORY" = var.container_number_map[var.instance_type].memory
"SUBSCRIPTION_ID" = data.azurerm_subscription.primary.subscription_id
"RESOURCE_GROUP_NAME" = data.azurerm_resource_group.rg.name
"LOCATION" = data.azurerm_resource_group.rg.location
"SET_OBS" = var.set_obs_integration
"OBS_NAME" = var.obs_name != "" ? var.obs_name : "${var.prefix}${var.cluster_name}obs"
"OBS_CONTAINER_NAME" = var.obs_container_name != "" ? var.obs_container_name : "${var.prefix}-${var.cluster_name}-obs"
"OBS_ACCESS_KEY" = var.blob_obs_access_key
"NUM_DRIVE_CONTAINERS" = var.container_number_map[var.instance_type].drive
"NUM_COMPUTE_CONTAINERS" = var.container_number_map[var.instance_type].compute
"NUM_FRONTEND_CONTAINERS" = var.container_number_map[var.instance_type].frontend
"NVMES_NUM" = var.container_number_map[var.instance_type].nvme
"TIERING_SSD_PERCENT" = var.tiering_ssd_percent
"PREFIX" = var.prefix
"KEY_VAULT_URI" = azurerm_key_vault.key_vault.vault_uri
"INSTANCE_TYPE" = var.instance_type
"INSTALL_DPDK" = var.install_cluster_dpdk
"NICS_NUM" = var.container_number_map[var.instance_type].nics
"INSTALL_URL" = var.install_weka_url != "" ? var.install_weka_url : "https://$TOKEN@get.weka.io/dist/v1/install/${var.weka_version}/${var.weka_version}"
"LOG_LEVEL" = var.function_app_log_level
"SUBNET" = data.azurerm_subnet.subnet.address_prefix
https_only = true
FUNCTIONS_WORKER_RUNTIME = "custom"
FUNCTION_APP_EDIT_MODE = "readonly"
HASH = var.function_app_version
WEBSITE_RUN_FROM_PACKAGE = "https://${local.weka_sa}.blob.core.windows.net/${local.weka_sa_container}/${local.function_app_zip_name}"
WEBSITE_VNET_ROUTE_ALL = true
}
identity {
type = "SystemAssigned"
}
lifecycle {
precondition {
condition = var.function_app_version == local.function_app_code_hash
error_message = "Please update function app code version."
}
ignore_changes = [site_config,tags]
}
depends_on = [azurerm_storage_account.deployment_sa, azurerm_subnet.subnet-delegation]
}
data "azurerm_subscription" "primary" {}
resource "azurerm_role_assignment" "function-assignment" {
scope = data.azurerm_resource_group.rg.id
role_definition_name = "Storage Blob Data Contributor"
principal_id = azurerm_linux_function_app.function_app.identity[0].principal_id
depends_on = [azurerm_linux_function_app.function_app]
}
resource "azurerm_role_assignment" "storage-blob-data-owner" {
scope = azurerm_storage_account.deployment_sa.id
role_definition_name = "Storage Blob Data Owner"
principal_id = azurerm_linux_function_app.function_app.identity[0].principal_id
depends_on = [azurerm_linux_function_app.function_app, azurerm_storage_account.deployment_sa]
}
resource "azurerm_role_assignment" "storage-account-contributor" {
scope = data.azurerm_resource_group.rg.id
role_definition_name = "Storage Account Contributor"
principal_id = azurerm_linux_function_app.function_app.identity[0].principal_id
depends_on = [azurerm_linux_function_app.function_app]
}
resource "azurerm_role_assignment" "function-app-key-vault-secrets-user" {
scope = data.azurerm_resource_group.rg.id
role_definition_name = "Key Vault Secrets User"
principal_id = azurerm_linux_function_app.function_app.identity[0].principal_id
depends_on = [azurerm_linux_function_app.function_app]
}
resource "azurerm_role_assignment" "function-app-key-user-access-admin" {
scope = data.azurerm_resource_group.rg.id
role_definition_name = "User Access Administrator"
principal_id = azurerm_linux_function_app.function_app.identity[0].principal_id
depends_on = [azurerm_linux_function_app.function_app]
}
resource "azurerm_role_assignment" "function-app-reader" {
scope = data.azurerm_resource_group.rg.id
role_definition_name = "Reader"
principal_id = azurerm_linux_function_app.function_app.identity[0].principal_id
depends_on = [azurerm_linux_function_app.function_app]
}
resource "azurerm_role_assignment" "function-app-scale-set-machine-owner" {
scope = azurerm_linux_virtual_machine_scale_set.vmss.id
role_definition_name = "Owner"
principal_id = azurerm_linux_function_app.function_app.identity[0].principal_id
depends_on = [azurerm_linux_function_app.function_app, azurerm_linux_virtual_machine_scale_set.vmss]
}