TerminateInstanceInAutoScalingGroup.hs

{-# LANGUAGE DataKinds                   #-}
{-# LANGUAGE DeriveGeneric               #-}
{-# LANGUAGE FlexibleInstances           #-}
{-# LANGUAGE GeneralizedNewtypeDeriving  #-}
{-# LANGUAGE LambdaCase                  #-}
{-# LANGUAGE NoImplicitPrelude           #-}
{-# LANGUAGE OverloadedStrings           #-}
{-# LANGUAGE RecordWildCards             #-}
{-# LANGUAGE TypeFamilies                #-}

{-# OPTIONS_GHC -fno-warn-unused-imports #-}

-- Module      : Network.AWS.AutoScaling.TerminateInstanceInAutoScalingGroup
-- Copyright   : (c) 2013-2014 Brendan Hay <brendan.g.hay@gmail.com>
-- License     : This Source Code Form is subject to the terms of
--               the Mozilla Public License, v. 2.0.
--               A copy of the MPL can be found in the LICENSE file or
--               you can obtain it at http://mozilla.org/MPL/2.0/.
-- Maintainer  : Brendan Hay <brendan.g.hay@gmail.com>
-- Stability   : experimental
-- Portability : non-portable (GHC extensions)
--
-- Derived from AWS service descriptions, licensed under Apache 2.0.

-- | Terminates the specified instance and optionally adjusts the desired group
-- size.
--
-- This call simply makes a termination request. The instances is not
-- terminated immediately.
--
-- <http://docs.aws.amazon.com/AutoScaling/latest/APIReference/API_TerminateInstanceInAutoScalingGroup.html>
module Network.AWS.AutoScaling.TerminateInstanceInAutoScalingGroup
    (
    -- * Request
      TerminateInstanceInAutoScalingGroup
    -- ** Request constructor
    , terminateInstanceInAutoScalingGroup
    -- ** Request lenses
    , tiiasgInstanceId
    , tiiasgShouldDecrementDesiredCapacity

    -- * Response
    , TerminateInstanceInAutoScalingGroupResponse
    -- ** Response constructor
    , terminateInstanceInAutoScalingGroupResponse
    -- ** Response lenses
    , tiiasgrActivity
    ) where

import Network.AWS.Prelude
import Network.AWS.Request.Query
import Network.AWS.AutoScaling.Types
import qualified GHC.Exts

data TerminateInstanceInAutoScalingGroup = TerminateInstanceInAutoScalingGroup
    { _tiiasgInstanceId                     :: Text
    , _tiiasgShouldDecrementDesiredCapacity :: Bool
    } deriving (Eq, Ord, Read, Show)

-- | 'TerminateInstanceInAutoScalingGroup' constructor.
--
-- The fields accessible through corresponding lenses are:
--
-- * 'tiiasgInstanceId' @::@ 'Text'
--
-- * 'tiiasgShouldDecrementDesiredCapacity' @::@ 'Bool'
--
terminateInstanceInAutoScalingGroup :: Text -- ^ 'tiiasgInstanceId'
                                    -> Bool -- ^ 'tiiasgShouldDecrementDesiredCapacity'
                                    -> TerminateInstanceInAutoScalingGroup
terminateInstanceInAutoScalingGroup p1 p2 = TerminateInstanceInAutoScalingGroup
    { _tiiasgInstanceId                     = p1
    , _tiiasgShouldDecrementDesiredCapacity = p2
    }

-- | The ID of the EC2 instance.
tiiasgInstanceId :: Lens' TerminateInstanceInAutoScalingGroup Text
tiiasgInstanceId = lens _tiiasgInstanceId (\s a -> s { _tiiasgInstanceId = a })

-- | If 'true', terminating this instance also decrements the size of the Auto
-- Scaling group.
tiiasgShouldDecrementDesiredCapacity :: Lens' TerminateInstanceInAutoScalingGroup Bool
tiiasgShouldDecrementDesiredCapacity =
    lens _tiiasgShouldDecrementDesiredCapacity
        (\s a -> s { _tiiasgShouldDecrementDesiredCapacity = a })

newtype TerminateInstanceInAutoScalingGroupResponse = TerminateInstanceInAutoScalingGroupResponse
    { _tiiasgrActivity :: Maybe Activity
    } deriving (Eq, Read, Show)

-- | 'TerminateInstanceInAutoScalingGroupResponse' constructor.
--
-- The fields accessible through corresponding lenses are:
--
-- * 'tiiasgrActivity' @::@ 'Maybe' 'Activity'
--
terminateInstanceInAutoScalingGroupResponse :: TerminateInstanceInAutoScalingGroupResponse
terminateInstanceInAutoScalingGroupResponse = TerminateInstanceInAutoScalingGroupResponse
    { _tiiasgrActivity = Nothing
    }

-- | A scaling activity.
tiiasgrActivity :: Lens' TerminateInstanceInAutoScalingGroupResponse (Maybe Activity)
tiiasgrActivity = lens _tiiasgrActivity (\s a -> s { _tiiasgrActivity = a })

instance ToPath TerminateInstanceInAutoScalingGroup where
    toPath = const "/"

instance ToQuery TerminateInstanceInAutoScalingGroup where
    toQuery TerminateInstanceInAutoScalingGroup{..} = mconcat
        [ "InstanceId"                     =? _tiiasgInstanceId
        , "ShouldDecrementDesiredCapacity" =? _tiiasgShouldDecrementDesiredCapacity
        ]

instance ToHeaders TerminateInstanceInAutoScalingGroup

instance AWSRequest TerminateInstanceInAutoScalingGroup where
    type Sv TerminateInstanceInAutoScalingGroup = AutoScaling
    type Rs TerminateInstanceInAutoScalingGroup = TerminateInstanceInAutoScalingGroupResponse

    request  = post "TerminateInstanceInAutoScalingGroup"
    response = xmlResponse

instance FromXML TerminateInstanceInAutoScalingGroupResponse where
    parseXML = withElement "TerminateInstanceInAutoScalingGroupResult" $ \x -> TerminateInstanceInAutoScalingGroupResponse
        <$> x .@? "Activity"