#
# CPU Utilization
#
resource "datadog_monitor" "cpu_utilization" {
  count   = var.cpu_utilization_enabled == "true" ? 1 : 0
  name    = "${var.prefix_slug == "" ? "" : "[${var.prefix_slug}]"}[${var.environment}] Cloud SQL CPU Utilization {{#is_alert}}{{{comparator}}} {{threshold}}% ({{value}}%){{/is_alert}}{{#is_warning}}{{{comparator}}} {{warn_threshold}}% ({{value}}%){{/is_warning}}"
  message = coalesce(var.cpu_utilization_message, var.message)
  type    = "query alert"

  query = <<EOQ
    ${var.cpu_utilization_time_aggregator}(${var.cpu_utilization_timeframe}):
      avg:gcp.cloudsql.database.cpu.utilization{${var.filter_tags}} by {database_id} * 100
    > ${var.cpu_utilization_threshold_critical}
EOQ

  thresholds = {
    warning = var.cpu_utilization_threshold_warning
    critical = var.cpu_utilization_threshold_critical
  }

  evaluation_delay = var.evaluation_delay
  new_host_delay = var.new_host_delay
  notify_audit = false
  locked = false
  timeout_h = 0
  include_tags = true
  require_full_window = false
  notify_no_data = false
  renotify_interval = 0

  tags = concat(["env:${var.environment}", "type:cloud", "provider:gcp", "resource:cloud-sql", "team:claranet", "created-by:terraform"], var.cpu_utilization_extra_tags)
}

#
# Disk Utilization
#
resource "datadog_monitor" "disk_utilization" {
  count = var.disk_utilization_enabled == "true" ? 1 : 0
  name = "${var.prefix_slug == "" ? "" : "[${var.prefix_slug}]"}[${var.environment}] Cloud SQL Disk Utilization {{#is_alert}}{{{comparator}}} {{threshold}}% ({{value}}%){{/is_alert}}{{#is_warning}}{{{comparator}}} {{warn_threshold}}% ({{value}}%){{/is_warning}}"
  message = coalesce(var.disk_utilization_message, var.message)
  type = "query alert"

  query = <<EOQ
    ${var.disk_utilization_time_aggregator}(${var.disk_utilization_timeframe}):
      avg:gcp.cloudsql.database.disk.utilization{${var.filter_tags}} by {database_id} * 100
    > ${var.disk_utilization_threshold_critical}
EOQ

thresholds = {
warning  = var.disk_utilization_threshold_warning
critical = var.disk_utilization_threshold_critical
}

evaluation_delay    = var.evaluation_delay
new_host_delay      = var.new_host_delay
notify_audit        = false
locked              = false
timeout_h           = 0
include_tags        = true
require_full_window = false
notify_no_data      = true
renotify_interval   = 0

tags = concat(["env:${var.environment}", "type:cloud", "provider:gcp", "resource:cloud-sql", "team:claranet", "created-by:terraform"], var.disk_utilization_extra_tags)
}

#
# Disk Utilization Forecast
#
resource "datadog_monitor" "disk_utilization_forecast" {
count   = var.disk_utilization_forecast_enabled == "true" ? 1 : 0
name    = "${var.prefix_slug == "" ? "" : "[${var.prefix_slug}]"}[${var.environment}] Cloud SQL Disk Utilization could reach {{#is_alert}}{{threshold}}%%{{/is_alert}} in a near future"
message = coalesce(var.disk_utilization_forecast_message, var.message)
  type  = "query alert"

query = <<EOQ
  ${var.disk_utilization_forecast_time_aggregator}(${var.disk_utilization_forecast_timeframe}):
    forecast(
      avg:gcp.cloudsql.database.disk.utilization{${var.filter_tags}} by {database_id} * 100,
      '${var.disk_utilization_forecast_algorithm}',
      ${var.disk_utilization_forecast_deviations},
      interval='${var.disk_utilization_forecast_interval}',
      ${var.disk_utilization_forecast_algorithm == "linear" ? format(
"history='%s',model='%s'",
var.disk_utilization_forecast_linear_history,
var.disk_utilization_forecast_linear_model,
) : ""}
      ${var.disk_utilization_forecast_algorithm == "seasonal" ? format(
"seasonality='%s'",
var.disk_utilization_forecast_seasonal_seasonality,
) : ""}
    )
  >= ${var.disk_utilization_forecast_threshold_critical}
EOQ

  thresholds = {
    critical          = var.disk_utilization_forecast_threshold_critical
    critical_recovery = var.disk_utilization_forecast_threshold_critical_recovery
  }

  evaluation_delay    = var.evaluation_delay
  new_host_delay      = var.new_host_delay
  notify_audit        = false
  locked              = false
  timeout_h           = 0
  include_tags        = true
  require_full_window = false
  notify_no_data      = false
  renotify_interval   = 0

  tags = concat(["env:${var.environment}", "type:cloud", "provider:gcp", "resource:cloud-sql", "team:claranet", "created-by:terraform"], var.disk_utilization_forecast_extra_tags)
}

#
# Memory Utilization
#
resource "datadog_monitor" "memory_utilization" {
  count   = var.memory_utilization_enabled == "true" ? 1 : 0
  name    = "${var.prefix_slug == "" ? "" : "[${var.prefix_slug}]"}[${var.environment}] Cloud SQL Memory Utilization {{#is_alert}}{{{comparator}}} {{threshold}}% ({{value}}%){{/is_alert}}{{#is_warning}}{{{comparator}}} {{warn_threshold}}% ({{value}}%){{/is_warning}}"
  message = coalesce(var.memory_utilization_message, var.message)
  type    = "query alert"

  query = <<EOQ
    ${var.memory_utilization_time_aggregator}(${var.memory_utilization_timeframe}):
      avg:gcp.cloudsql.database.memory.utilization{${var.filter_tags}} by {database_id} * 100
    > ${var.memory_utilization_threshold_critical}
EOQ

  thresholds = {
    warning = var.memory_utilization_threshold_warning
    critical = var.memory_utilization_threshold_critical
  }

  evaluation_delay = var.evaluation_delay
  new_host_delay = var.new_host_delay
  notify_audit = false
  locked = false
  timeout_h = 0
  include_tags = true
  require_full_window = false
  notify_no_data = false
  renotify_interval = 0

  tags = concat(["env:${var.environment}", "type:cloud", "provider:gcp", "resource:cloud-sql", "team:claranet", "created-by:terraform"], var.memory_utilization_extra_tags)
}

#
# Memory Utilization Forecast
#
resource "datadog_monitor" "memory_utilization_forecast" {
  count = var.memory_utilization_forecast_enabled == "true" ? 1 : 0
  name = "${var.prefix_slug == "" ? "" : "[${var.prefix_slug}]"}[${var.environment}] Cloud SQL Memory Utilization could reach {{#is_alert}}{{threshold}}%%{{/is_alert}} in a near future"
  message = coalesce(var.memory_utilization_forecast_message, var.message)
  type = "query alert"

  query = <<EOQ
    ${var.memory_utilization_forecast_time_aggregator}(${var.memory_utilization_forecast_timeframe}):
      forecast(
        avg:gcp.cloudsql.database.memory.utilization{${var.filter_tags}} by {database_id} * 100,
        '${var.memory_utilization_forecast_algorithm}',
        ${var.memory_utilization_forecast_deviations},
        interval='${var.memory_utilization_forecast_interval}',
        ${var.memory_utilization_forecast_algorithm == "linear" ? format(
"history='%s',model='%s'",
var.memory_utilization_forecast_linear_history,
var.memory_utilization_forecast_linear_model,
) : ""}
      ${var.memory_utilization_forecast_algorithm == "seasonal" ? format(
"seasonality='%s'",
var.memory_utilization_forecast_seasonal_seasonality,
) : ""}
      )
    >= ${var.memory_utilization_forecast_threshold_critical}
EOQ

    thresholds = {
      critical          = var.memory_utilization_forecast_threshold_critical
      critical_recovery = var.memory_utilization_forecast_threshold_critical_recovery
    }

    evaluation_delay    = var.evaluation_delay
    new_host_delay      = var.new_host_delay
    notify_audit        = false
    locked              = false
    timeout_h           = 0
    include_tags        = true
    require_full_window = false
    notify_no_data      = false
    renotify_interval   = 0

    tags = concat(["env:${var.environment}", "type:cloud", "provider:gcp", "resource:cloud-sql", "team:claranet", "created-by:terraform"], var.memory_utilization_forecast_extra_tags)
    }

    #
    # Failover Unavailable
    #
    resource "datadog_monitor" "failover_unavailable" {
      count   = var.failover_unavailable_enabled == "true" ? 1 : 0
      name    = "${var.prefix_slug == "" ? "" : "[${var.prefix_slug}]"}[${var.environment}] Cloud SQL Failover Unavailable"
      message = coalesce(var.failover_unavailable_message, var.message)
      type    = "metric alert"

      query = <<EOQ
  ${var.failover_unavailable_time_aggregator}(${var.failover_unavailable_timeframe}):
    avg:gcp.cloudsql.database.available_for_failover{${var.filter_tags}}
    by {database_id}
  <= ${var.failover_unavailable_threshold_critical}
EOQ

      thresholds = {
        critical = var.failover_unavailable_threshold_critical
      }

      evaluation_delay = var.evaluation_delay
      new_host_delay = var.new_host_delay
      notify_audit = false
      locked = false
      timeout_h = 0
      include_tags = true
      require_full_window = false
      notify_no_data = false
      renotify_interval = 0

      tags = concat(["env:${var.environment}", "type:cloud", "provider:gcp", "resource:cloud-sql", "team:claranet", "created-by:terraform"], var.failover_unavailable_extra_tags)
    }