grafana-terraform/environments/modules/grafana_dashboard/locals.tf

locals {
  # Dashboards with both manual changes allowed and destroy protection
  dashboards_ignore_and_protect = flatten([
    for group in var.groups : [
      for file in(group.dashboard_path_if_exist != null ? fileset(group.dashboard_path_if_exist, "**/*.json") : []) : {
        group_name     = group.dashboard_alert_group_name
        file_path      = "${group.dashboard_path_if_exist}/${file}"
        dashboard_json = jsondecode(file("${group.dashboard_path_if_exist}/${file}"))
        dashboard_uid = substr(
          replace(
            lower(
              "${try(jsondecode(file("${group.dashboard_path_if_exist}/${file}")).uid, trimsuffix(basename(file), ".json"))}_${group.dashboard_path_if_exist}/${file}"
            ),
            "/[^a-z0-9_-]/",
            "_"
          ),
          0,
          var.dashboard_uid_max_length
        )
        folder_id                   = lookup(var.folder_ids, group.dashboard_alert_group_name, null)
        keep_manual_changes         = lookup(group, "keep_manual_changes", false)
        prevent_destroy_on_recreate = lookup(group, "prevent_destroy_on_recreate", false)
      }
    ] if lookup(group, "keep_manual_changes", false) && lookup(group, "prevent_destroy_on_recreate", false)
  ])

  # Dashboards with only manual changes allowed
  dashboards_ignore_only = flatten([
    for group in var.groups : [
      for file in(group.dashboard_path_if_exist != null ? fileset(group.dashboard_path_if_exist, "**/*.json") : []) : {
        group_name     = group.dashboard_alert_group_name
        file_path      = "${group.dashboard_path_if_exist}/${file}"
        dashboard_json = jsondecode(file("${group.dashboard_path_if_exist}/${file}"))
        dashboard_uid = substr(
          replace(
            lower(
              "${try(jsondecode(file("${group.dashboard_path_if_exist}/${file}")).uid, trimsuffix(basename(file), ".json"))}_${group.dashboard_path_if_exist}/${file}"
            ),
            "/[^a-z0-9_-]/",
            "_"
          ),
          0,
          var.dashboard_uid_max_length
        )
        folder_id                   = lookup(var.folder_ids, group.dashboard_alert_group_name, null)
        keep_manual_changes         = lookup(group, "keep_manual_changes", false)
        prevent_destroy_on_recreate = lookup(group, "prevent_destroy_on_recreate", false)
      }
    ] if lookup(group, "keep_manual_changes", false) && !lookup(group, "prevent_destroy_on_recreate", false)
  ])

  # Dashboards with only destroy protection
  dashboards_protect_only = flatten([
    for group in var.groups : [
      for file in(group.dashboard_path_if_exist != null ? fileset(group.dashboard_path_if_exist, "**/*.json") : []) : {
        group_name     = group.dashboard_alert_group_name
        file_path      = "${group.dashboard_path_if_exist}/${file}"
        dashboard_json = jsondecode(file("${group.dashboard_path_if_exist}/${file}"))
        dashboard_uid = substr(
          replace(
            lower(
              "${try(jsondecode(file("${group.dashboard_path_if_exist}/${file}")).uid, trimsuffix(basename(file), ".json"))}_${group.dashboard_path_if_exist}/${file}"
            ),
            "/[^a-z0-9_-]/",
            "_"
          ),
          0,
          var.dashboard_uid_max_length
        )
        folder_id                   = lookup(var.folder_ids, group.dashboard_alert_group_name, null)
        keep_manual_changes         = lookup(group, "keep_manual_changes", false)
        prevent_destroy_on_recreate = lookup(group, "prevent_destroy_on_recreate", false)
      }
    ] if !lookup(group, "keep_manual_changes", false) && lookup(group, "prevent_destroy_on_recreate", false)
  ])

  # Standard dashboards without any special lifecycle management
  dashboards_standard = flatten([
    for group in var.groups : [
      for file in(group.dashboard_path_if_exist != null ? fileset(group.dashboard_path_if_exist, "**/*.json") : []) : {
        group_name     = group.dashboard_alert_group_name
        file_path      = "${group.dashboard_path_if_exist}/${file}"
        dashboard_json = jsondecode(file("${group.dashboard_path_if_exist}/${file}"))
        dashboard_uid = substr(
          replace(
            lower(
              "${try(jsondecode(file("${group.dashboard_path_if_exist}/${file}")).uid, trimsuffix(basename(file), ".json"))}_${group.dashboard_path_if_exist}/${file}"
            ),
            "/[^a-z0-9_-]/",
            "_"
          ),
          0,
          var.dashboard_uid_max_length
        )
        folder_id                   = lookup(var.folder_ids, group.dashboard_alert_group_name, null)
        keep_manual_changes         = lookup(group, "keep_manual_changes", false)
        prevent_destroy_on_recreate = lookup(group, "prevent_destroy_on_recreate", false)
      }
    ] if !lookup(group, "keep_manual_changes", false) && !lookup(group, "prevent_destroy_on_recreate", false)
  ])
}