{-# 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.EMR.Types.PlacementGroupConfig
-- 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.EMR.Types.PlacementGroupConfig where

import qualified Amazonka.Core as Core
import qualified Amazonka.Core.Lens.Internal as Lens
import qualified Amazonka.Data as Data
import Amazonka.EMR.Types.InstanceRoleType
import Amazonka.EMR.Types.PlacementGroupStrategy
import qualified Amazonka.Prelude as Prelude

-- | Placement group configuration for an Amazon EMR cluster. The
-- configuration specifies the placement strategy that can be applied to
-- instance roles during cluster creation.
--
-- To use this configuration, consider attaching managed policy
-- AmazonElasticMapReducePlacementGroupPolicy to the EMR role.
--
-- /See:/ 'newPlacementGroupConfig' smart constructor.
data PlacementGroupConfig = PlacementGroupConfig'
  { -- | EC2 Placement Group strategy associated with instance role.
    --
    -- Starting with Amazon EMR version 5.23.0, the only supported placement
    -- strategy is @SPREAD@ for the @MASTER@ instance role.
    PlacementGroupConfig -> Maybe PlacementGroupStrategy
placementStrategy :: Prelude.Maybe PlacementGroupStrategy,
    -- | Role of the instance in the cluster.
    --
    -- Starting with Amazon EMR version 5.23.0, the only supported instance
    -- role is @MASTER@.
    PlacementGroupConfig -> InstanceRoleType
instanceRole :: InstanceRoleType
  }
  deriving (PlacementGroupConfig -> PlacementGroupConfig -> Bool
forall a. (a -> a -> Bool) -> (a -> a -> Bool) -> Eq a
/= :: PlacementGroupConfig -> PlacementGroupConfig -> Bool
$c/= :: PlacementGroupConfig -> PlacementGroupConfig -> Bool
== :: PlacementGroupConfig -> PlacementGroupConfig -> Bool
$c== :: PlacementGroupConfig -> PlacementGroupConfig -> Bool
Prelude.Eq, ReadPrec [PlacementGroupConfig]
ReadPrec PlacementGroupConfig
Int -> ReadS PlacementGroupConfig
ReadS [PlacementGroupConfig]
forall a.
(Int -> ReadS a)
-> ReadS [a] -> ReadPrec a -> ReadPrec [a] -> Read a
readListPrec :: ReadPrec [PlacementGroupConfig]
$creadListPrec :: ReadPrec [PlacementGroupConfig]
readPrec :: ReadPrec PlacementGroupConfig
$creadPrec :: ReadPrec PlacementGroupConfig
readList :: ReadS [PlacementGroupConfig]
$creadList :: ReadS [PlacementGroupConfig]
readsPrec :: Int -> ReadS PlacementGroupConfig
$creadsPrec :: Int -> ReadS PlacementGroupConfig
Prelude.Read, Int -> PlacementGroupConfig -> ShowS
[PlacementGroupConfig] -> ShowS
PlacementGroupConfig -> String
forall a.
(Int -> a -> ShowS) -> (a -> String) -> ([a] -> ShowS) -> Show a
showList :: [PlacementGroupConfig] -> ShowS
$cshowList :: [PlacementGroupConfig] -> ShowS
show :: PlacementGroupConfig -> String
$cshow :: PlacementGroupConfig -> String
showsPrec :: Int -> PlacementGroupConfig -> ShowS
$cshowsPrec :: Int -> PlacementGroupConfig -> ShowS
Prelude.Show, forall x. Rep PlacementGroupConfig x -> PlacementGroupConfig
forall x. PlacementGroupConfig -> Rep PlacementGroupConfig x
forall a.
(forall x. a -> Rep a x) -> (forall x. Rep a x -> a) -> Generic a
$cto :: forall x. Rep PlacementGroupConfig x -> PlacementGroupConfig
$cfrom :: forall x. PlacementGroupConfig -> Rep PlacementGroupConfig x
Prelude.Generic)

-- |
-- Create a value of 'PlacementGroupConfig' 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:
--
-- 'placementStrategy', 'placementGroupConfig_placementStrategy' - EC2 Placement Group strategy associated with instance role.
--
-- Starting with Amazon EMR version 5.23.0, the only supported placement
-- strategy is @SPREAD@ for the @MASTER@ instance role.
--
-- 'instanceRole', 'placementGroupConfig_instanceRole' - Role of the instance in the cluster.
--
-- Starting with Amazon EMR version 5.23.0, the only supported instance
-- role is @MASTER@.
newPlacementGroupConfig ::
  -- | 'instanceRole'
  InstanceRoleType ->
  PlacementGroupConfig
newPlacementGroupConfig :: InstanceRoleType -> PlacementGroupConfig
newPlacementGroupConfig InstanceRoleType
pInstanceRole_ =
  PlacementGroupConfig'
    { $sel:placementStrategy:PlacementGroupConfig' :: Maybe PlacementGroupStrategy
placementStrategy =
        forall a. Maybe a
Prelude.Nothing,
      $sel:instanceRole:PlacementGroupConfig' :: InstanceRoleType
instanceRole = InstanceRoleType
pInstanceRole_
    }

-- | EC2 Placement Group strategy associated with instance role.
--
-- Starting with Amazon EMR version 5.23.0, the only supported placement
-- strategy is @SPREAD@ for the @MASTER@ instance role.
placementGroupConfig_placementStrategy :: Lens.Lens' PlacementGroupConfig (Prelude.Maybe PlacementGroupStrategy)
placementGroupConfig_placementStrategy :: Lens' PlacementGroupConfig (Maybe PlacementGroupStrategy)
placementGroupConfig_placementStrategy = forall s a b t. (s -> a) -> (s -> b -> t) -> Lens s t a b
Lens.lens (\PlacementGroupConfig' {Maybe PlacementGroupStrategy
placementStrategy :: Maybe PlacementGroupStrategy
$sel:placementStrategy:PlacementGroupConfig' :: PlacementGroupConfig -> Maybe PlacementGroupStrategy
placementStrategy} -> Maybe PlacementGroupStrategy
placementStrategy) (\s :: PlacementGroupConfig
s@PlacementGroupConfig' {} Maybe PlacementGroupStrategy
a -> PlacementGroupConfig
s {$sel:placementStrategy:PlacementGroupConfig' :: Maybe PlacementGroupStrategy
placementStrategy = Maybe PlacementGroupStrategy
a} :: PlacementGroupConfig)

-- | Role of the instance in the cluster.
--
-- Starting with Amazon EMR version 5.23.0, the only supported instance
-- role is @MASTER@.
placementGroupConfig_instanceRole :: Lens.Lens' PlacementGroupConfig InstanceRoleType
placementGroupConfig_instanceRole :: Lens' PlacementGroupConfig InstanceRoleType
placementGroupConfig_instanceRole = forall s a b t. (s -> a) -> (s -> b -> t) -> Lens s t a b
Lens.lens (\PlacementGroupConfig' {InstanceRoleType
instanceRole :: InstanceRoleType
$sel:instanceRole:PlacementGroupConfig' :: PlacementGroupConfig -> InstanceRoleType
instanceRole} -> InstanceRoleType
instanceRole) (\s :: PlacementGroupConfig
s@PlacementGroupConfig' {} InstanceRoleType
a -> PlacementGroupConfig
s {$sel:instanceRole:PlacementGroupConfig' :: InstanceRoleType
instanceRole = InstanceRoleType
a} :: PlacementGroupConfig)

instance Data.FromJSON PlacementGroupConfig where
  parseJSON :: Value -> Parser PlacementGroupConfig
parseJSON =
    forall a. String -> (Object -> Parser a) -> Value -> Parser a
Data.withObject
      String
"PlacementGroupConfig"
      ( \Object
x ->
          Maybe PlacementGroupStrategy
-> InstanceRoleType -> PlacementGroupConfig
PlacementGroupConfig'
            forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
Prelude.<$> (Object
x forall a. FromJSON a => Object -> Key -> Parser (Maybe a)
Data..:? Key
"PlacementStrategy")
            forall (f :: * -> *) a b. Applicative f => f (a -> b) -> f a -> f b
Prelude.<*> (Object
x forall a. FromJSON a => Object -> Key -> Parser a
Data..: Key
"InstanceRole")
      )

instance Prelude.Hashable PlacementGroupConfig where
  hashWithSalt :: Int -> PlacementGroupConfig -> Int
hashWithSalt Int
_salt PlacementGroupConfig' {Maybe PlacementGroupStrategy
InstanceRoleType
instanceRole :: InstanceRoleType
placementStrategy :: Maybe PlacementGroupStrategy
$sel:instanceRole:PlacementGroupConfig' :: PlacementGroupConfig -> InstanceRoleType
$sel:placementStrategy:PlacementGroupConfig' :: PlacementGroupConfig -> Maybe PlacementGroupStrategy
..} =
    Int
_salt
      forall a. Hashable a => Int -> a -> Int
`Prelude.hashWithSalt` Maybe PlacementGroupStrategy
placementStrategy
      forall a. Hashable a => Int -> a -> Int
`Prelude.hashWithSalt` InstanceRoleType
instanceRole

instance Prelude.NFData PlacementGroupConfig where
  rnf :: PlacementGroupConfig -> ()
rnf PlacementGroupConfig' {Maybe PlacementGroupStrategy
InstanceRoleType
instanceRole :: InstanceRoleType
placementStrategy :: Maybe PlacementGroupStrategy
$sel:instanceRole:PlacementGroupConfig' :: PlacementGroupConfig -> InstanceRoleType
$sel:placementStrategy:PlacementGroupConfig' :: PlacementGroupConfig -> Maybe PlacementGroupStrategy
..} =
    forall a. NFData a => a -> ()
Prelude.rnf Maybe PlacementGroupStrategy
placementStrategy
      seq :: forall a b. a -> b -> b
`Prelude.seq` forall a. NFData a => a -> ()
Prelude.rnf InstanceRoleType
instanceRole

instance Data.ToJSON PlacementGroupConfig where
  toJSON :: PlacementGroupConfig -> Value
toJSON PlacementGroupConfig' {Maybe PlacementGroupStrategy
InstanceRoleType
instanceRole :: InstanceRoleType
placementStrategy :: Maybe PlacementGroupStrategy
$sel:instanceRole:PlacementGroupConfig' :: PlacementGroupConfig -> InstanceRoleType
$sel:placementStrategy:PlacementGroupConfig' :: PlacementGroupConfig -> Maybe PlacementGroupStrategy
..} =
    [Pair] -> Value
Data.object
      ( forall a. [Maybe a] -> [a]
Prelude.catMaybes
          [ (Key
"PlacementStrategy" forall kv v. (KeyValue kv, ToJSON v) => Key -> v -> kv
Data..=)
              forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
Prelude.<$> Maybe PlacementGroupStrategy
placementStrategy,
            forall a. a -> Maybe a
Prelude.Just (Key
"InstanceRole" forall kv v. (KeyValue kv, ToJSON v) => Key -> v -> kv
Data..= InstanceRoleType
instanceRole)
          ]
      )