resource "datadog_monitor" "apimgt_status" {
  count   = "${var.status_enabled ? 1 : 0}"
  name    = "[${var.environment}] API Management is down"
  message = "${coalesce(var.status_message, var.message)}"

  query = <<EOF
      ${var.status_time_aggregator}(${var.status_timeframe}):avg:azure.apimanagement_service.status${module.filter-tags.query_alert} by {resource_group,region,name} < 1
  EOF

  type = "metric alert"

  thresholds {
    critical = 1
  }

  silenced = "${var.status_silenced}"

  notify_no_data      = true
  evaluation_delay    = "${var.evaluation_delay}"
  renotify_interval   = 0
  notify_audit        = false
  timeout_h           = 0
  include_tags        = true
  locked              = false
  require_full_window = false
  new_host_delay      = "${var.new_host_delay}"

  tags = ["env:${var.environment}", "type:cloud", "provider:azure", "resource:apimanagement", "team:claranet", "created-by:terraform", "${var.status_extra_tags}"]
}

resource "datadog_monitor" "apimgt_failed_requests" {
  count   = "${var.failed_requests_enabled ? 1 : 0}"
  name    = "[${var.environment}] API Management too many failed requests {{#is_alert}}{{{comparator}}} {{threshold}}% ({{value}}%){{/is_alert}}{{#is_warning}}{{{comparator}}} {{warn_threshold}}% ({{value}}%){{/is_warning}}"
  message = "${coalesce(var.failed_requests_message, var.message)}"

  query = <<EOF
    ${var.failed_requests_time_aggregator}(${var.failed_requests_timeframe}): (
      default(avg:azure.apimanagement_service.failed_requests${module.filter-tags.query_alert} by {resource_group,region,name}.as_rate(), 0) /
      default(avg:azure.apimanagement_service.total_requests${module.filter-tags.query_alert} by {resource_group,region,name}.as_rate(), 1)
    ) * 100 > ${var.failed_requests_threshold_critical}
  EOF

  thresholds {
    critical = "${var.failed_requests_threshold_critical}"
    warning  = "${var.failed_requests_threshold_warning}"
  }

  silenced = "${var.failed_requests_silenced}"

  type                = "metric alert"
  notify_no_data      = false
  notify_audit        = false
  timeout_h           = 1
  include_tags        = true
  locked              = false
  require_full_window = false
  new_host_delay      = "${var.new_host_delay}"
  evaluation_delay    = "${var.evaluation_delay}"
  renotify_interval   = 0

  tags = ["env:${var.environment}", "type:cloud", "provider:azure", "resource:apimanagement", "team:claranet", "created-by:terraform", "${var.failed_requests_extra_tags}"]
}

resource "datadog_monitor" "apimgt_other_requests" {
  count   = "${var.other_requests_enabled ? 1 : 0}"
  name    = "[${var.environment}] API Management too many other requests {{#is_alert}}{{{comparator}}} {{threshold}}% ({{value}}%){{/is_alert}}{{#is_warning}}{{{comparator}}} {{warn_threshold}}% ({{value}}%){{/is_warning}}"
  message = "${coalesce(var.other_requests_message, var.message)}"

  query = <<EOF
    ${var.other_requests_time_aggregator}(${var.other_requests_timeframe}): (
      default(avg:azure.apimanagement_service.other_requests${module.filter-tags.query_alert} by {resource_group,region,name}.as_rate(), 0) /
      default(avg:azure.apimanagement_service.total_requests${module.filter-tags.query_alert} by {resource_group,region,name}.as_rate(), 1)
    ) * 100 > ${var.other_requests_threshold_critical}
  EOF

  thresholds {
    critical = "${var.other_requests_threshold_critical}"
    warning  = "${var.other_requests_threshold_warning}"
  }

  silenced = "${var.other_requests_silenced}"

  type                = "metric alert"
  notify_no_data      = false
  notify_audit        = false
  timeout_h           = 1
  include_tags        = true
  locked              = false
  require_full_window = false
  new_host_delay      = "${var.new_host_delay}"
  evaluation_delay    = "${var.evaluation_delay}"
  renotify_interval   = 0

  tags = ["env:${var.environment}", "type:cloud", "provider:azure", "resource:apimanagement", "team:claranet", "created-by:terraform", "${var.other_requests_extra_tags}"]
}

resource "datadog_monitor" "apimgt_unauthorized_requests" {
  count   = "${var.unauthorized_requests_enabled ? 1 : 0}"
  name    = "[${var.environment}] API Management too many unauthorized requests {{#is_alert}}{{{comparator}}} {{threshold}}% ({{value}}%){{/is_alert}}{{#is_warning}}{{{comparator}}} {{warn_threshold}}% ({{value}}%){{/is_warning}}"
  message = "${coalesce(var.unauthorized_requests_message, var.message)}"

  query = <<EOF
    ${var.unauthorized_requests_time_aggregator}(${var.unauthorized_requests_timeframe}): (
      default(avg:azure.apimanagement_service.unauthorized_requests${module.filter-tags.query_alert} by {resource_group,region,name}.as_rate(), 0) /
      default(avg:azure.apimanagement_service.total_requests${module.filter-tags.query_alert} by {resource_group,region,name}.as_rate(), 1)
    ) * 100 > ${var.unauthorized_requests_threshold_critical}
  EOF

  thresholds {
    critical = "${var.unauthorized_requests_threshold_critical}"
    warning  = "${var.unauthorized_requests_threshold_warning}"
  }

  silenced = "${var.unauthorized_requests_silenced}"

  type                = "metric alert"
  notify_no_data      = false
  notify_audit        = false
  timeout_h           = 1
  include_tags        = true
  locked              = false
  require_full_window = false
  new_host_delay      = "${var.new_host_delay}"
  evaluation_delay    = "${var.evaluation_delay}"
  renotify_interval   = 0

  tags = ["env:${var.environment}", "type:cloud", "provider:azure", "resource:apimanagement", "team:claranet", "created-by:terraform", "${var.unauthorized_requests_extra_tags}"]
}

resource "datadog_monitor" "apimgt_successful_requests" {
  count   = "${var.successful_requests_enabled ? 1 : 0}"
  name    = "[${var.environment}] API Management successful requests rate too low {{#is_alert}}{{{comparator}}} {{threshold}}% ({{value}}%){{/is_alert}}{{#is_warning}}{{{comparator}}} {{warn_threshold}}% ({{value}}%){{/is_warning}}"
  message = "${coalesce(var.successful_requests_message, var.message)}"

  query = <<EOF
    ${var.successful_requests_time_aggregator}(${var.successful_requests_timeframe}):
    default( (
      default(avg:azure.apimanagement_service.successful_requests${module.filter-tags.query_alert} by {resource_group,region,name}.as_rate(), 0) /
      default(avg:azure.apimanagement_service.total_requests${module.filter-tags.query_alert} by {resource_group,region,name}.as_rate(), 0)
    ) * 100, 100) < ${var.successful_requests_threshold_critical}
  EOF

  thresholds {
    critical = "${var.successful_requests_threshold_critical}"
    warning  = "${var.successful_requests_threshold_warning}"
  }

  silenced = "${var.successful_requests_silenced}"

  type                = "metric alert"
  notify_no_data      = false
  notify_audit        = false
  timeout_h           = 1
  include_tags        = true
  locked              = false
  require_full_window = false
  new_host_delay      = "${var.new_host_delay}"
  evaluation_delay    = "${var.evaluation_delay}"
  renotify_interval   = 0

  tags = ["env:${var.environment}", "type:cloud", "provider:azure", "resource:apimanagement", "team:claranet", "created-by:terraform", "${var.successful_requests_extra_tags}"]
}