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feat: Prepare Application Gateway for APIM change to External mode for Front Door migration #257

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Merged
patrickmoore-nc merged 1 commit into from
Oct 28, 2025
Merged

feat: Prepare Application Gateway for APIM change to External mode for Front Door migration #257

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58 changes: 58 additions & 0 deletions infrastructure/modules/application-gateway/main.tf
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Original file line number Diff line number Diff line change
Expand Up @@ -158,6 +158,64 @@ resource "azurerm_application_gateway" "this" {
backend_address_pool_name = var.names.backend_address_pool_name[request_routing_rule.value.backend_address_pool_key]
backend_http_settings_name = var.names.backend_http_settings_name[request_routing_rule.value.backend_http_settings_key]
priority = request_routing_rule.value.priority
rewrite_rule_set_name = try(var.names.rewrite_rule_set_name[request_routing_rule.value.rewrite_rule_set_key], null)
}
}

dynamic "rewrite_rule_set" {
for_each = var.rewrite_rule_set

content {
name = var.names.rewrite_rule_set_name[rewrite_rule_set.key]

dynamic "rewrite_rule" {
for_each = rewrite_rule_set.value.rewrite_rule

content {
name = rewrite_rule.key
rule_sequence = rewrite_rule.value.rule_sequence

dynamic "condition" {
for_each = coalesce(rewrite_rule.value.condition, {})

content {
variable = condition.value.variable
pattern = condition.value.pattern
ignore_case = condition.value.ignore_case
negate = condition.value.negate
}
}

dynamic "response_header_configuration" {
for_each = coalesce(rewrite_rule.value.response_header_configuration, {})

content {
header_name = response_header_configuration.key
header_value = response_header_configuration.value
}
}

dynamic "request_header_configuration" {
for_each = coalesce(rewrite_rule.value.request_header_configuration, {})

content {
header_name = request_header_configuration.key
header_value = request_header_configuration.value
}
}

dynamic "url" {
for_each = rewrite_rule.value.url != null ? [1] : []

content {
path = rewrite_rule.value.url.path
query_string = rewrite_rule.value.url.query_string
components = rewrite_rule.value.url.components
reroute = rewrite_rule.value.url.reroute
}
}
}
}
}
}

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25 changes: 25 additions & 0 deletions infrastructure/modules/application-gateway/variables.tf
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Original file line number Diff line number Diff line change
Expand Up @@ -115,6 +115,7 @@ variable "request_routing_rule" {
backend_http_settings_key = string
http_listener_key = string
priority = number
rewrite_rule_set_key = optional(string)
rule_type = string
}))
}
Expand All @@ -124,6 +125,30 @@ variable "resource_group_name" {
description = "The name of the resource group in which to create the Application Gateway. Changing this forces a new resource to be created."
}

variable "rewrite_rule_set" {
description = "A map of request rewrite rules for the Application Gateway. The key name will be used to retrieve the name from var.names."
type = map(object({
rewrite_rule = optional(map(object({
rule_sequence = number
condition = optional(map(object({
ignore_case = optional(bool)
negate = optional(bool)
pattern = string
variable = string
})))
request_header_configuration = optional(map(string))
response_header_configuration = optional(map(string))
url = optional(object({
components = optional(string)
path = optional(string)
query_string = optional(string)
reroute = optional(bool)
}))
})))
}))
default = {}
}

variable "sku" {
type = string
description = "The SKU of the Application Gateway (Basic, Standard_v2, or WAF_v2)."
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58 changes: 8 additions & 50 deletions infrastructure/modules/shared-config/output.tf
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Original file line number Diff line number Diff line change
Expand Up @@ -20,75 +20,33 @@ locals {
probe_name = {
apim_gateway = lower("apim-gateway-probe-${var.env}-${var.location_map[var.location]}-${var.application}")
apim_portal = lower("apim-portal-probe-${var.env}-${var.location_map[var.location]}-${var.application}")
cohman_www_dev = lower("cohman-www-dev-probe-${var.env}-${var.location_map[var.location]}-${var.application}")
cohman_www_nft = lower("cohman-www-nft-probe-${var.env}-${var.location_map[var.location]}-${var.application}")
cohman_www_int = lower("cohman-www-int-probe-${var.env}-${var.location_map[var.location]}-${var.application}")
cohman_www_pre = lower("cohman-www-pre-probe-${var.env}-${var.location_map[var.location]}-${var.application}")
cohman_www_prd = lower("cohman-www-prd-probe-${var.env}-${var.location_map[var.location]}-${var.application}")
parman_www_dev = lower("parman-www-dev-probe-${var.env}-${var.location_map[var.location]}-${var.application}")
parman_www_nft = lower("parman-www-nft-probe-${var.env}-${var.location_map[var.location]}-${var.application}")
parman_www_int = lower("parman-www-int-probe-${var.env}-${var.location_map[var.location]}-${var.application}")
parman_www_pre = lower("parman-www-pre-probe-${var.env}-${var.location_map[var.location]}-${var.application}")
parman_www_prd = lower("parman-www-prd-probe-${var.env}-${var.location_map[var.location]}-${var.application}")
migration_test = lower("migration-test-probe-${var.env}-${var.location_map[var.location]}-${var.application}")
}
backend_address_pool_name = {
apim_gateway = lower("apim-gateway-beap-${var.env}-${var.location_map[var.location]}-${var.application}")
apim_portal = lower("apim-portal-beap-${var.env}-${var.location_map[var.location]}-${var.application}")
cohman_www_dev = lower("cohman-www-dev-beap-${var.env}-${var.location_map[var.location]}-${var.application}")
cohman_www_nft = lower("cohman-www-nft-beap-${var.env}-${var.location_map[var.location]}-${var.application}")
cohman_www_int = lower("cohman-www-int-beap-${var.env}-${var.location_map[var.location]}-${var.application}")
cohman_www_pre = lower("cohman-www-pre-beap-${var.env}-${var.location_map[var.location]}-${var.application}")
cohman_www_prd = lower("cohman-www-prd-beap-${var.env}-${var.location_map[var.location]}-${var.application}")
parman_www_dev = lower("parman-www-dev-beap-${var.env}-${var.location_map[var.location]}-${var.application}")
parman_www_nft = lower("parman-www-nft-beap-${var.env}-${var.location_map[var.location]}-${var.application}")
parman_www_int = lower("parman-www-int-beap-${var.env}-${var.location_map[var.location]}-${var.application}")
parman_www_pre = lower("parman-www-pre-beap-${var.env}-${var.location_map[var.location]}-${var.application}")
parman_www_prd = lower("parman-www-prd-beap-${var.env}-${var.location_map[var.location]}-${var.application}")
migration_test = lower("migration-test-beap-${var.env}-${var.location_map[var.location]}-${var.application}")
}
backend_http_settings_name = {
apim_shared = lower("apim-shared-htst-${var.env}-${var.location_map[var.location]}-${var.application}")
apim_gateway = lower("apim-gateway-htst-${var.env}-${var.location_map[var.location]}-${var.application}")
apim_portal = lower("apim-portal-htst-${var.env}-${var.location_map[var.location]}-${var.application}")
cohman_www_dev = lower("cohman-www-dev-htst-${var.env}-${var.location_map[var.location]}-${var.application}")
cohman_www_nft = lower("cohman-www-nft-htst-${var.env}-${var.location_map[var.location]}-${var.application}")
cohman_www_int = lower("cohman-www-int-htst-${var.env}-${var.location_map[var.location]}-${var.application}")
cohman_www_pre = lower("cohman-www-pre-htst-${var.env}-${var.location_map[var.location]}-${var.application}")
cohman_www_prd = lower("cohman-www-prd-htst-${var.env}-${var.location_map[var.location]}-${var.application}")
parman_www_dev = lower("parman-www-dev-htst-${var.env}-${var.location_map[var.location]}-${var.application}")
parman_www_nft = lower("parman-www-nft-htst-${var.env}-${var.location_map[var.location]}-${var.application}")
parman_www_int = lower("parman-www-int-htst-${var.env}-${var.location_map[var.location]}-${var.application}")
parman_www_pre = lower("parman-www-pre-htst-${var.env}-${var.location_map[var.location]}-${var.application}")
parman_www_prd = lower("parman-www-prd-htst-${var.env}-${var.location_map[var.location]}-${var.application}")
migration_test = lower("migration-test-htst-${var.env}-${var.location_map[var.location]}-${var.application}")
}
http_listener_name = {
apim_gateway_public = lower("apim-gateway-pub-listener-${var.env}-${var.location_map[var.location]}-${var.application}")
apim_gateway_private = lower("apim-gateway-priv-listener-${var.env}-${var.location_map[var.location]}-${var.application}")
apim_portal_private = lower("apim-portal-priv-listener-${var.env}-${var.location_map[var.location]}-${var.application}")
cohman_www_dev_public = lower("cohman-www-dev-pub-listener-${var.env}-${var.location_map[var.location]}-${var.application}")
cohman_www_nft_public = lower("cohman-www-nft-pub-listener-${var.env}-${var.location_map[var.location]}-${var.application}")
cohman_www_int_public = lower("cohman-www-int-pub-listener-${var.env}-${var.location_map[var.location]}-${var.application}")
cohman_www_pre_public = lower("cohman-www-pre-pub-listener-${var.env}-${var.location_map[var.location]}-${var.application}")
cohman_www_prd_public = lower("cohman-www-prd-pub-listener-${var.env}-${var.location_map[var.location]}-${var.application}")
parman_www_dev_public = lower("parman-www-dev-pub-listener-${var.env}-${var.location_map[var.location]}-${var.application}")
parman_www_nft_public = lower("parman-www-nft-pub-listener-${var.env}-${var.location_map[var.location]}-${var.application}")
parman_www_int_public = lower("parman-www-int-pub-listener-${var.env}-${var.location_map[var.location]}-${var.application}")
parman_www_pre_public = lower("parman-www-pre-pub-listener-${var.env}-${var.location_map[var.location]}-${var.application}")
parman_www_prd_public = lower("parman-www-prd-pub-listener-${var.env}-${var.location_map[var.location]}-${var.application}")
migration_test_public = lower("migration-test-pub-listener-${var.env}-${var.location_map[var.location]}-${var.application}")
}
rewrite_rule_set_name = {
migration_test = lower("migration-test-rwrs-${var.env}-${var.location_map[var.location]}-${var.application}")
}
rule_name = {
apim_gateway_public = lower("apim-gateway-pub-rule-${var.env}-${var.location_map[var.location]}-${var.application}")
apim_gateway_private = lower("apim-gateway-priv-rule-${var.env}-${var.location_map[var.location]}-${var.application}")
apim_portal_private = lower("apim-portal-priv-rule-${var.env}-${var.location_map[var.location]}-${var.application}")
cohman_www_dev_public = lower("cohman-www-dev-pub-listener-${var.env}-${var.location_map[var.location]}-${var.application}")
cohman_www_nft_public = lower("cohman-www-nft-pub-listener-${var.env}-${var.location_map[var.location]}-${var.application}")
cohman_www_int_public = lower("cohman-www-int-pub-listener-${var.env}-${var.location_map[var.location]}-${var.application}")
cohman_www_pre_public = lower("cohman-www-pre-pub-listener-${var.env}-${var.location_map[var.location]}-${var.application}")
cohman_www_prd_public = lower("cohman-www-prd-pub-listener-${var.env}-${var.location_map[var.location]}-${var.application}")
parman_www_dev_public = lower("parman-www-dev-pub-listener-${var.env}-${var.location_map[var.location]}-${var.application}")
parman_www_nft_public = lower("parman-www-nft-pub-listener-${var.env}-${var.location_map[var.location]}-${var.application}")
parman_www_int_public = lower("parman-www-int-pub-listener-${var.env}-${var.location_map[var.location]}-${var.application}")
parman_www_pre_public = lower("parman-www-pre-pub-listener-${var.env}-${var.location_map[var.location]}-${var.application}")
parman_www_prd_public = lower("parman-www-prd-pub-listener-${var.env}-${var.location_map[var.location]}-${var.application}")
migration_test_public = lower("migration-test-pub-rule-${var.env}-${var.location_map[var.location]}-${var.application}")
}
}

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