{-# LANGUAGE DeriveGeneric #-}
{-# LANGUAGE DuplicateRecordFields #-}
{-# LANGUAGE NamedFieldPuns #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE RecordWildCards #-}
{-# LANGUAGE StrictData #-}
{-# LANGUAGE NoImplicitPrelude #-}
{-# OPTIONS_GHC -fno-warn-unused-imports #-}
{-# OPTIONS_GHC -fno-warn-unused-matches #-}

-- Derived from AWS service descriptions, licensed under Apache 2.0.

-- |
-- Module      : Amazonka.AutoScaling.Types.InstanceReusePolicy
-- Copyright   : (c) 2013-2023 Brendan Hay
-- License     : Mozilla Public License, v. 2.0.
-- Maintainer  : Brendan Hay
-- Stability   : auto-generated
-- Portability : non-portable (GHC extensions)
module Amazonka.AutoScaling.Types.InstanceReusePolicy where

import qualified Amazonka.Core as Core
import qualified Amazonka.Core.Lens.Internal as Lens
import qualified Amazonka.Data as Data
import qualified Amazonka.Prelude as Prelude

-- | Describes an instance reuse policy for a warm pool.
--
-- For more information, see
-- <https://docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-warm-pools.html Warm pools for Amazon EC2 Auto Scaling>
-- in the /Amazon EC2 Auto Scaling User Guide/.
--
-- /See:/ 'newInstanceReusePolicy' smart constructor.
data InstanceReusePolicy = InstanceReusePolicy'
  { -- | Specifies whether instances in the Auto Scaling group can be returned to
    -- the warm pool on scale in.
    InstanceReusePolicy -> Maybe Bool
reuseOnScaleIn :: Prelude.Maybe Prelude.Bool
  }
  deriving (InstanceReusePolicy -> InstanceReusePolicy -> Bool
forall a. (a -> a -> Bool) -> (a -> a -> Bool) -> Eq a
/= :: InstanceReusePolicy -> InstanceReusePolicy -> Bool
$c/= :: InstanceReusePolicy -> InstanceReusePolicy -> Bool
== :: InstanceReusePolicy -> InstanceReusePolicy -> Bool
$c== :: InstanceReusePolicy -> InstanceReusePolicy -> Bool
Prelude.Eq, ReadPrec [InstanceReusePolicy]
ReadPrec InstanceReusePolicy
Int -> ReadS InstanceReusePolicy
ReadS [InstanceReusePolicy]
forall a.
(Int -> ReadS a)
-> ReadS [a] -> ReadPrec a -> ReadPrec [a] -> Read a
readListPrec :: ReadPrec [InstanceReusePolicy]
$creadListPrec :: ReadPrec [InstanceReusePolicy]
readPrec :: ReadPrec InstanceReusePolicy
$creadPrec :: ReadPrec InstanceReusePolicy
readList :: ReadS [InstanceReusePolicy]
$creadList :: ReadS [InstanceReusePolicy]
readsPrec :: Int -> ReadS InstanceReusePolicy
$creadsPrec :: Int -> ReadS InstanceReusePolicy
Prelude.Read, Int -> InstanceReusePolicy -> ShowS
[InstanceReusePolicy] -> ShowS
InstanceReusePolicy -> String
forall a.
(Int -> a -> ShowS) -> (a -> String) -> ([a] -> ShowS) -> Show a
showList :: [InstanceReusePolicy] -> ShowS
$cshowList :: [InstanceReusePolicy] -> ShowS
show :: InstanceReusePolicy -> String
$cshow :: InstanceReusePolicy -> String
showsPrec :: Int -> InstanceReusePolicy -> ShowS
$cshowsPrec :: Int -> InstanceReusePolicy -> ShowS
Prelude.Show, forall x. Rep InstanceReusePolicy x -> InstanceReusePolicy
forall x. InstanceReusePolicy -> Rep InstanceReusePolicy x
forall a.
(forall x. a -> Rep a x) -> (forall x. Rep a x -> a) -> Generic a
$cto :: forall x. Rep InstanceReusePolicy x -> InstanceReusePolicy
$cfrom :: forall x. InstanceReusePolicy -> Rep InstanceReusePolicy x
Prelude.Generic)

-- |
-- Create a value of 'InstanceReusePolicy' with all optional fields omitted.
--
-- Use <https://hackage.haskell.org/package/generic-lens generic-lens> or <https://hackage.haskell.org/package/optics optics> to modify other optional fields.
--
-- The following record fields are available, with the corresponding lenses provided
-- for backwards compatibility:
--
-- 'reuseOnScaleIn', 'instanceReusePolicy_reuseOnScaleIn' - Specifies whether instances in the Auto Scaling group can be returned to
-- the warm pool on scale in.
newInstanceReusePolicy ::
  InstanceReusePolicy
newInstanceReusePolicy :: InstanceReusePolicy
newInstanceReusePolicy =
  InstanceReusePolicy'
    { $sel:reuseOnScaleIn:InstanceReusePolicy' :: Maybe Bool
reuseOnScaleIn =
        forall a. Maybe a
Prelude.Nothing
    }

-- | Specifies whether instances in the Auto Scaling group can be returned to
-- the warm pool on scale in.
instanceReusePolicy_reuseOnScaleIn :: Lens.Lens' InstanceReusePolicy (Prelude.Maybe Prelude.Bool)
instanceReusePolicy_reuseOnScaleIn :: Lens' InstanceReusePolicy (Maybe Bool)
instanceReusePolicy_reuseOnScaleIn = forall s a b t. (s -> a) -> (s -> b -> t) -> Lens s t a b
Lens.lens (\InstanceReusePolicy' {Maybe Bool
reuseOnScaleIn :: Maybe Bool
$sel:reuseOnScaleIn:InstanceReusePolicy' :: InstanceReusePolicy -> Maybe Bool
reuseOnScaleIn} -> Maybe Bool
reuseOnScaleIn) (\s :: InstanceReusePolicy
s@InstanceReusePolicy' {} Maybe Bool
a -> InstanceReusePolicy
s {$sel:reuseOnScaleIn:InstanceReusePolicy' :: Maybe Bool
reuseOnScaleIn = Maybe Bool
a} :: InstanceReusePolicy)

instance Data.FromXML InstanceReusePolicy where
  parseXML :: [Node] -> Either String InstanceReusePolicy
parseXML [Node]
x =
    Maybe Bool -> InstanceReusePolicy
InstanceReusePolicy'
      forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
Prelude.<$> ([Node]
x forall a. FromXML a => [Node] -> Text -> Either String (Maybe a)
Data..@? Text
"ReuseOnScaleIn")

instance Prelude.Hashable InstanceReusePolicy where
  hashWithSalt :: Int -> InstanceReusePolicy -> Int
hashWithSalt Int
_salt InstanceReusePolicy' {Maybe Bool
reuseOnScaleIn :: Maybe Bool
$sel:reuseOnScaleIn:InstanceReusePolicy' :: InstanceReusePolicy -> Maybe Bool
..} =
    Int
_salt forall a. Hashable a => Int -> a -> Int
`Prelude.hashWithSalt` Maybe Bool
reuseOnScaleIn

instance Prelude.NFData InstanceReusePolicy where
  rnf :: InstanceReusePolicy -> ()
rnf InstanceReusePolicy' {Maybe Bool
reuseOnScaleIn :: Maybe Bool
$sel:reuseOnScaleIn:InstanceReusePolicy' :: InstanceReusePolicy -> Maybe Bool
..} =
    forall a. NFData a => a -> ()
Prelude.rnf Maybe Bool
reuseOnScaleIn

instance Data.ToQuery InstanceReusePolicy where
  toQuery :: InstanceReusePolicy -> QueryString
toQuery InstanceReusePolicy' {Maybe Bool
reuseOnScaleIn :: Maybe Bool
$sel:reuseOnScaleIn:InstanceReusePolicy' :: InstanceReusePolicy -> Maybe Bool
..} =
    forall a. Monoid a => [a] -> a
Prelude.mconcat
      [ByteString
"ReuseOnScaleIn" forall a. ToQuery a => ByteString -> a -> QueryString
Data.=: Maybe Bool
reuseOnScaleIn]