module "log_metric_filter" {
  source  = "terraform-aws-modules/cloudwatch/aws//modules/log-metric-filter"
  version = "~> 3.0"

  log_group_name = "my-application-logs"

  name    = "error-metric"
  pattern = "ERROR"

  metric_transformation_namespace = "MyApplication"
  metric_transformation_name      = "ErrorCount"
}

module "log_group" {
  source  = "terraform-aws-modules/cloudwatch/aws//modules/log-group"
  version = "~> 3.0"

  name              = "my-app"
  retention_in_days = 120
}

module "log_stream" {
  source  = "terraform-aws-modules/cloudwatch/aws//modules/log-stream"
  version = "~> 3.0"

  name           = "stream1"
  log_group_name = "my-app"
}

module "metric_alarm" {
  source  = "terraform-aws-modules/cloudwatch/aws//modules/metric-alarm"
  version = "~> 3.0"

  alarm_name          = "my-application-logs-errors"
  alarm_description   = "Bad errors in my-application-logs"
  comparison_operator = "GreaterThanOrEqualToThreshold"
  evaluation_periods  = 1
  threshold           = 10
  period              = 60
  unit                = "Count"

  namespace   = "MyApplication"
  metric_name = "ErrorCount"
  statistic   = "Maximum"

  alarm_actions = ["arn:aws:sns:eu-west-1:835367859852:my-sns-queue"]
}

module "metric_alarms" {
  source  = "terraform-aws-modules/cloudwatch/aws//modules/metric-alarms-by-multiple-dimensions"
  version = "~> 3.0"

  alarm_name          = "lambda-duration-"
  alarm_description   = "Lambda duration is too high"
  comparison_operator = "GreaterThanOrEqualToThreshold"
  evaluation_periods  = 1
  threshold           = 10
  period              = 60
  unit                = "Milliseconds"

  namespace   = "AWS/Lambda"
  metric_name = "Duration"
  statistic   = "Maximum"

  dimensions = {
    "lambda1" = {
      FunctionName = "index"
    },
    "lambda2" = {
      FunctionName = "signup"
    },
  }

  alarm_actions = ["arn:aws:sns:eu-west-1:835367859852:my-sns-queue"]
}

module "cis_alarms" {
  source  = "terraform-aws-modules/cloudwatch/aws//modules/cis-alarms"
  version = "~> 3.0"

  log_group_name = "my-cloudtrail-logs"
  alarm_actions  = ["arn:aws:sns:eu-west-1:835367859852:my-sns-queue"]
}