nhs-notify-digital-letters/infrastructure/terraform/components/dl/modules_eventpub.tf at bd36edada53cca7e96d520456a34d09cb851e30c · NHSDigital/nhs-notify-digital-letters · GitHub

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module "eventpub" {
  source = "https://github.com/NHSDigital/nhs-notify-shared-modules/releases/download/v2.0.30/terraform-eventpub.zip"

  name = "eventpub"

  aws_account_id = var.aws_account_id
  component      = var.component
  environment    = var.environment
  project        = var.project
  region         = var.region
  group          = var.group

  default_tags = local.default_tags

  kms_key_arn           = module.kms.key_arn
  log_retention_in_days = var.log_retention_in_days
  log_level             = var.log_level

  force_destroy = var.force_destroy

  event_cache_buffer_interval        = 500
  enable_sns_delivery_logging        = true
  sns_success_logging_sample_percent = 0

  event_cache_expiry_days = 30
  enable_event_cache      = true

  data_plane_bus_arn    = var.eventpub_data_plane_bus_arn
  control_plane_bus_arn = var.eventpub_control_plane_bus_arn
}

resource "aws_sns_topic_policy" "eventbridge_publish" {
  arn    = module.eventpub.sns_topic.arn
  policy = data.aws_iam_policy_document.sns_publish.json
}

data "aws_iam_policy_document" "sns_publish" {
  statement {
    sid    = "AllowEventBridgePublish"
    effect = "Allow"

    principals {
      type        = "Service"
      identifiers = ["events.amazonaws.com"]
    }

    actions = [
      "sns:Publish"
    ]

    resources = [
      module.eventpub.sns_topic.arn
    ]

    condition {
      test     = "ArnEquals"
      variable = "aws:SourceArn"
      values   = [aws_cloudwatch_event_rule.letter_prepared.arn]
    }
  }
}