ModifyInstanceGroups.hs

{-# LANGUAGE DeriveDataTypeable #-}
{-# LANGUAGE DeriveGeneric      #-}
{-# LANGUAGE OverloadedStrings  #-}
{-# LANGUAGE RecordWildCards    #-}
{-# LANGUAGE TypeFamilies       #-}

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

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

-- |
-- Module      : Network.AWS.EMR.ModifyInstanceGroups
-- Copyright   : (c) 2013-2015 Brendan Hay
-- License     : Mozilla Public License, v. 2.0.
-- Maintainer  : Brendan Hay <brendan.g.hay@gmail.com>
-- Stability   : auto-generated
-- Portability : non-portable (GHC extensions)
--
-- ModifyInstanceGroups modifies the number of nodes and configuration
-- settings of an instance group. The input parameters include the new
-- target instance count for the group and the instance group ID. The call
-- will either succeed or fail atomically.
--
-- /See:/ <http://docs.aws.amazon.com/ElasticMapReduce/latest/API/API_ModifyInstanceGroups.html AWS API Reference> for ModifyInstanceGroups.
module Network.AWS.EMR.ModifyInstanceGroups
    (
    -- * Creating a Request
      modifyInstanceGroups
    , ModifyInstanceGroups
    -- * Request Lenses
    , migInstanceGroups

    -- * Destructuring the Response
    , modifyInstanceGroupsResponse
    , ModifyInstanceGroupsResponse
    ) where

import           Network.AWS.EMR.Types
import           Network.AWS.EMR.Types.Product
import           Network.AWS.Prelude
import           Network.AWS.Request
import           Network.AWS.Response

-- | Change the size of some instance groups.
--
-- /See:/ 'modifyInstanceGroups' smart constructor.
newtype ModifyInstanceGroups = ModifyInstanceGroups'
    { _migInstanceGroups :: Maybe [InstanceGroupModifyConfig]
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'ModifyInstanceGroups' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'migInstanceGroups'
modifyInstanceGroups
    :: ModifyInstanceGroups
modifyInstanceGroups =
    ModifyInstanceGroups'
    { _migInstanceGroups = Nothing
    }

-- | Instance groups to change.
migInstanceGroups :: Lens' ModifyInstanceGroups [InstanceGroupModifyConfig]
migInstanceGroups = lens _migInstanceGroups (\ s a -> s{_migInstanceGroups = a}) . _Default . _Coerce;

instance AWSRequest ModifyInstanceGroups where
        type Rs ModifyInstanceGroups =
             ModifyInstanceGroupsResponse
        request = postJSON eMR
        response = receiveNull ModifyInstanceGroupsResponse'

instance ToHeaders ModifyInstanceGroups where
        toHeaders
          = const
              (mconcat
                 ["X-Amz-Target" =#
                    ("ElasticMapReduce.ModifyInstanceGroups" ::
                       ByteString),
                  "Content-Type" =#
                    ("application/x-amz-json-1.1" :: ByteString)])

instance ToJSON ModifyInstanceGroups where
        toJSON ModifyInstanceGroups'{..}
          = object
              (catMaybes
                 [("InstanceGroups" .=) <$> _migInstanceGroups])

instance ToPath ModifyInstanceGroups where
        toPath = const "/"

instance ToQuery ModifyInstanceGroups where
        toQuery = const mempty

-- | /See:/ 'modifyInstanceGroupsResponse' smart constructor.
data ModifyInstanceGroupsResponse =
    ModifyInstanceGroupsResponse'
    deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'ModifyInstanceGroupsResponse' with the minimum fields required to make a request.
--
modifyInstanceGroupsResponse
    :: ModifyInstanceGroupsResponse
modifyInstanceGroupsResponse = ModifyInstanceGroupsResponse'