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fix: Replace try() with can(coalesce()) to better handle null values #389

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fix: Replace try() with can(coalesce()) to better handle null values #389

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29 changes: 14 additions & 15 deletions main.tf
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Original file line number Diff line number Diff line change
Expand Up @@ -92,7 +92,7 @@ resource "aws_lb_listener" "this" {
certificate_arn = try(each.value.certificate_arn, null)

dynamic "default_action" {
for_each = try([each.value.authenticate_cognito], [])
for_each = can(coalesce(each.value.authenticate_cognito)) ? [each.value.authenticate_cognito] : []

content {
authenticate_cognito {
Expand All @@ -112,7 +112,7 @@ resource "aws_lb_listener" "this" {
}

dynamic "default_action" {
for_each = try([each.value.authenticate_oidc], [])
for_each = can(coalesce(each.value.authentication_oidc)) ? [each.value.authenticate_oidc] : []

content {
authenticate_oidc {
Expand All @@ -135,7 +135,7 @@ resource "aws_lb_listener" "this" {
}

dynamic "default_action" {
for_each = try([each.value.fixed_response], [])
for_each = can(coalesce(each.value.fixed_response)) ? [each.value.fixed_response] : []

content {
fixed_response {
Expand All @@ -150,7 +150,7 @@ resource "aws_lb_listener" "this" {
}

dynamic "default_action" {
for_each = try([each.value.forward], [])
for_each = can(coalesce(each.value.forward)) ? [each.value.forward] : []

content {
order = try(default_action.value.order, null)
Expand All @@ -160,7 +160,7 @@ resource "aws_lb_listener" "this" {
}

dynamic "default_action" {
for_each = try([each.value.weighted_forward], [])
for_each = can(coalesce(each.value.weighted_forward)) ? [each.value.weighted_forward] : []

content {
forward {
Expand Down Expand Up @@ -189,7 +189,7 @@ resource "aws_lb_listener" "this" {
}

dynamic "default_action" {
for_each = try([each.value.redirect], [])
for_each = can(coalesce(each.value.redirect)) ? [each.value.redirect] : []

content {
order = try(default_action.value.order, null)
Expand All @@ -208,7 +208,7 @@ resource "aws_lb_listener" "this" {
}

dynamic "mutual_authentication" {
for_each = try([each.value.mutual_authentication], [])
for_each = can(coalesce(each.value.mutual_authentication)) ? [each.value.mutual_authentication] : []
content {
mode = mutual_authentication.value.mode
trust_store_arn = try(mutual_authentication.value.trust_store_arn, null)
Expand Down Expand Up @@ -493,7 +493,7 @@ resource "aws_lb_target_group" "this" {
deregistration_delay = try(each.value.deregistration_delay, null)

dynamic "health_check" {
for_each = try([each.value.health_check], [])
for_each = can(coalesce(each.value.health_check)) ? [each.value.health_check] : []

content {
enabled = try(health_check.value.enabled, null)
Expand Down Expand Up @@ -523,7 +523,7 @@ resource "aws_lb_target_group" "this" {
slow_start = try(each.value.slow_start, null)

dynamic "stickiness" {
for_each = try([each.value.stickiness], [])
for_each = can(coalesce(each.value.stickiness)) ? [each.value.stickiness] : []

content {
cookie_duration = try(stickiness.value.cookie_duration, null)
Expand All @@ -534,7 +534,7 @@ resource "aws_lb_target_group" "this" {
}

dynamic "target_failover" {
for_each = try(each.value.target_failover, [])
for_each = can(coalesce(each.value.target_failover)) ? each.value.target_failover : []

content {
on_deregistration = target_failover.value.on_deregistration
Expand All @@ -543,12 +543,11 @@ resource "aws_lb_target_group" "this" {
}

dynamic "target_group_health" {
for_each = try([each.value.target_group_health], [])
for_each = can(coalesce(each.value.target_group_health)) ? [each.value.target_group_health] : []

content {

dynamic "dns_failover" {
for_each = try([target_group_health.value.dns_failover], [])
for_each = can(coalesce(target_group_health.value.dns_failover)) ? [target_group_health.value.dns_failover] : []

content {
minimum_healthy_targets_count = try(dns_failover.value.minimum_healthy_targets_count, null)
Expand All @@ -557,7 +556,7 @@ resource "aws_lb_target_group" "this" {
}

dynamic "unhealthy_state_routing" {
for_each = try([target_group_health.value.unhealthy_state_routing], [])
for_each = can(coalesce(target_group_health.value.unhealthy_state_routing)) ? [target_group_health.value.unhealthy_state_routing] : []

content {
minimum_healthy_targets_count = try(unhealthy_state_routing.value.minimum_healthy_targets_count, null)
Expand All @@ -568,7 +567,7 @@ resource "aws_lb_target_group" "this" {
}

dynamic "target_health_state" {
for_each = try([each.value.target_health_state], [])
for_each = can(coalesce(each.value.target_health_state)) ? [each.value.target_health_state] : []
content {
enable_unhealthy_connection_termination = try(target_health_state.value.enable_unhealthy_connection_termination, true)
unhealthy_draining_interval = try(target_health_state.value.unhealthy_draining_interval, null)
Expand Down
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