{-# 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.EC2.DescribeVPCAttribute
-- Copyright   : (c) 2013-2016 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)
--
-- Describes the specified attribute of the specified VPC. You can specify only one attribute at a time.
module Network.AWS.EC2.DescribeVPCAttribute
    (
    -- * Creating a Request
      describeVPCAttribute
    , DescribeVPCAttribute
    -- * Request Lenses
    , dvpcaDryRun
    , dvpcaVPCId
    , dvpcaAttribute

    -- * Destructuring the Response
    , describeVPCAttributeResponse
    , DescribeVPCAttributeResponse
    -- * Response Lenses
    , dvpcarsEnableDNSHostnames
    , dvpcarsEnableDNSSupport
    , dvpcarsVPCId
    , dvpcarsResponseStatus
    ) where

import           Network.AWS.EC2.Types
import           Network.AWS.EC2.Types.Product
import           Network.AWS.Lens
import           Network.AWS.Prelude
import           Network.AWS.Request
import           Network.AWS.Response

-- | Contains the parameters for DescribeVpcAttribute.
--
-- /See:/ 'describeVPCAttribute' smart constructor.
data DescribeVPCAttribute = DescribeVPCAttribute'
    { _dvpcaDryRun    :: !(Maybe Bool)
    , _dvpcaVPCId     :: !Text
    , _dvpcaAttribute :: !VPCAttributeName
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'DescribeVPCAttribute' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'dvpcaDryRun'
--
-- * 'dvpcaVPCId'
--
-- * 'dvpcaAttribute'
describeVPCAttribute
    :: Text -- ^ 'dvpcaVPCId'
    -> VPCAttributeName -- ^ 'dvpcaAttribute'
    -> DescribeVPCAttribute
describeVPCAttribute pVPCId_ pAttribute_ =
    DescribeVPCAttribute'
    { _dvpcaDryRun = Nothing
    , _dvpcaVPCId = pVPCId_
    , _dvpcaAttribute = pAttribute_
    }

-- | Checks whether you have the required permissions for the action, without actually making the request, and provides an error response. If you have the required permissions, the error response is 'DryRunOperation'. Otherwise, it is 'UnauthorizedOperation'.
dvpcaDryRun :: Lens' DescribeVPCAttribute (Maybe Bool)
dvpcaDryRun = lens _dvpcaDryRun (\ s a -> s{_dvpcaDryRun = a});

-- | The ID of the VPC.
dvpcaVPCId :: Lens' DescribeVPCAttribute Text
dvpcaVPCId = lens _dvpcaVPCId (\ s a -> s{_dvpcaVPCId = a});

-- | The VPC attribute.
dvpcaAttribute :: Lens' DescribeVPCAttribute VPCAttributeName
dvpcaAttribute = lens _dvpcaAttribute (\ s a -> s{_dvpcaAttribute = a});

instance AWSRequest DescribeVPCAttribute where
        type Rs DescribeVPCAttribute =
             DescribeVPCAttributeResponse
        request = postQuery ec2
        response
          = receiveXML
              (\ s h x ->
                 DescribeVPCAttributeResponse' <$>
                   (x .@? "enableDnsHostnames") <*>
                     (x .@? "enableDnsSupport")
                     <*> (x .@? "vpcId")
                     <*> (pure (fromEnum s)))

instance Hashable DescribeVPCAttribute

instance NFData DescribeVPCAttribute

instance ToHeaders DescribeVPCAttribute where
        toHeaders = const mempty

instance ToPath DescribeVPCAttribute where
        toPath = const "/"

instance ToQuery DescribeVPCAttribute where
        toQuery DescribeVPCAttribute'{..}
          = mconcat
              ["Action" =: ("DescribeVpcAttribute" :: ByteString),
               "Version" =: ("2016-04-01" :: ByteString),
               "DryRun" =: _dvpcaDryRun, "VpcId" =: _dvpcaVPCId,
               "Attribute" =: _dvpcaAttribute]

-- | Contains the output of DescribeVpcAttribute.
--
-- /See:/ 'describeVPCAttributeResponse' smart constructor.
data DescribeVPCAttributeResponse = DescribeVPCAttributeResponse'
    { _dvpcarsEnableDNSHostnames :: !(Maybe AttributeBooleanValue)
    , _dvpcarsEnableDNSSupport   :: !(Maybe AttributeBooleanValue)
    , _dvpcarsVPCId              :: !(Maybe Text)
    , _dvpcarsResponseStatus     :: !Int
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'DescribeVPCAttributeResponse' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'dvpcarsEnableDNSHostnames'
--
-- * 'dvpcarsEnableDNSSupport'
--
-- * 'dvpcarsVPCId'
--
-- * 'dvpcarsResponseStatus'
describeVPCAttributeResponse
    :: Int -- ^ 'dvpcarsResponseStatus'
    -> DescribeVPCAttributeResponse
describeVPCAttributeResponse pResponseStatus_ =
    DescribeVPCAttributeResponse'
    { _dvpcarsEnableDNSHostnames = Nothing
    , _dvpcarsEnableDNSSupport = Nothing
    , _dvpcarsVPCId = Nothing
    , _dvpcarsResponseStatus = pResponseStatus_
    }

-- | Indicates whether the instances launched in the VPC get DNS hostnames. If this attribute is 'true', instances in the VPC get DNS hostnames; otherwise, they do not.
dvpcarsEnableDNSHostnames :: Lens' DescribeVPCAttributeResponse (Maybe AttributeBooleanValue)
dvpcarsEnableDNSHostnames = lens _dvpcarsEnableDNSHostnames (\ s a -> s{_dvpcarsEnableDNSHostnames = a});

-- | Indicates whether DNS resolution is enabled for the VPC. If this attribute is 'true', the Amazon DNS server resolves DNS hostnames for your instances to their corresponding IP addresses; otherwise, it does not.
dvpcarsEnableDNSSupport :: Lens' DescribeVPCAttributeResponse (Maybe AttributeBooleanValue)
dvpcarsEnableDNSSupport = lens _dvpcarsEnableDNSSupport (\ s a -> s{_dvpcarsEnableDNSSupport = a});

-- | The ID of the VPC.
dvpcarsVPCId :: Lens' DescribeVPCAttributeResponse (Maybe Text)
dvpcarsVPCId = lens _dvpcarsVPCId (\ s a -> s{_dvpcarsVPCId = a});

-- | The response status code.
dvpcarsResponseStatus :: Lens' DescribeVPCAttributeResponse Int
dvpcarsResponseStatus = lens _dvpcarsResponseStatus (\ s a -> s{_dvpcarsResponseStatus = a});

instance NFData DescribeVPCAttributeResponse