{-# 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.CreateSubnet
-- Copyright   : (c) 2013-2018 Brendan Hay
-- License     : Mozilla Public License, v. 2.0.
-- Maintainer  : Brendan Hay <brendan.g.hay+amazonka@gmail.com>
-- Stability   : auto-generated
-- Portability : non-portable (GHC extensions)
--
-- Creates a subnet in an existing VPC.
--
--
-- When you create each subnet, you provide the VPC ID and the IPv4 CIDR block you want for the subnet. After you create a subnet, you can't change its CIDR block. The size of the subnet's IPv4 CIDR block can be the same as a VPC's IPv4 CIDR block, or a subset of a VPC's IPv4 CIDR block. If you create more than one subnet in a VPC, the subnets' CIDR blocks must not overlap. The smallest IPv4 subnet (and VPC) you can create uses a /28 netmask (16 IPv4 addresses), and the largest uses a /16 netmask (65,536 IPv4 addresses).
--
-- If you've associated an IPv6 CIDR block with your VPC, you can create a subnet with an IPv6 CIDR block that uses a /64 prefix length.
--
-- /Important:/ AWS reserves both the first four and the last IPv4 address in each subnet's CIDR block. They're not available for use.
--
-- If you add more than one subnet to a VPC, they're set up in a star topology with a logical router in the middle.
--
-- If you launch an instance in a VPC using an Amazon EBS-backed AMI, the IP address doesn't change if you stop and restart the instance (unlike a similar instance launched outside a VPC, which gets a new IP address when restarted). It's therefore possible to have a subnet with no running instances (they're all stopped), but no remaining IP addresses available.
--
-- For more information about subnets, see <http://docs.aws.amazon.com/AmazonVPC/latest/UserGuide/VPC_Subnets.html Your VPC and Subnets> in the /Amazon Virtual Private Cloud User Guide/ .
--
module Network.AWS.EC2.CreateSubnet
    (
    -- * Creating a Request
      createSubnet
    , CreateSubnet
    -- * Request Lenses
    , cssIPv6CidrBlock
    , cssAvailabilityZone
    , cssDryRun
    , cssCidrBlock
    , cssVPCId

    -- * Destructuring the Response
    , createSubnetResponse
    , CreateSubnetResponse
    -- * Response Lenses
    , crersSubnet
    , crersResponseStatus
    ) 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 CreateSubnet.
--
--
--
-- /See:/ 'createSubnet' smart constructor.
data CreateSubnet = CreateSubnet'
  { _cssIPv6CidrBlock    :: !(Maybe Text)
  , _cssAvailabilityZone :: !(Maybe Text)
  , _cssDryRun           :: !(Maybe Bool)
  , _cssCidrBlock        :: !Text
  , _cssVPCId            :: !Text
  } deriving (Eq, Read, Show, Data, Typeable, Generic)


-- | Creates a value of 'CreateSubnet' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'cssIPv6CidrBlock' - The IPv6 network range for the subnet, in CIDR notation. The subnet size must use a /64 prefix length.
--
-- * 'cssAvailabilityZone' - The Availability Zone for the subnet. Default: AWS selects one for you. If you create more than one subnet in your VPC, we may not necessarily select a different zone for each subnet.
--
-- * 'cssDryRun' - 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@ .
--
-- * 'cssCidrBlock' - The IPv4 network range for the subnet, in CIDR notation. For example, @10.0.0.0/24@ .
--
-- * 'cssVPCId' - The ID of the VPC.
createSubnet
    :: Text -- ^ 'cssCidrBlock'
    -> Text -- ^ 'cssVPCId'
    -> CreateSubnet
createSubnet pCidrBlock_ pVPCId_ =
  CreateSubnet'
    { _cssIPv6CidrBlock = Nothing
    , _cssAvailabilityZone = Nothing
    , _cssDryRun = Nothing
    , _cssCidrBlock = pCidrBlock_
    , _cssVPCId = pVPCId_
    }


-- | The IPv6 network range for the subnet, in CIDR notation. The subnet size must use a /64 prefix length.
cssIPv6CidrBlock :: Lens' CreateSubnet (Maybe Text)
cssIPv6CidrBlock = lens _cssIPv6CidrBlock (\ s a -> s{_cssIPv6CidrBlock = a})

-- | The Availability Zone for the subnet. Default: AWS selects one for you. If you create more than one subnet in your VPC, we may not necessarily select a different zone for each subnet.
cssAvailabilityZone :: Lens' CreateSubnet (Maybe Text)
cssAvailabilityZone = lens _cssAvailabilityZone (\ s a -> s{_cssAvailabilityZone = a})

-- | 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@ .
cssDryRun :: Lens' CreateSubnet (Maybe Bool)
cssDryRun = lens _cssDryRun (\ s a -> s{_cssDryRun = a})

-- | The IPv4 network range for the subnet, in CIDR notation. For example, @10.0.0.0/24@ .
cssCidrBlock :: Lens' CreateSubnet Text
cssCidrBlock = lens _cssCidrBlock (\ s a -> s{_cssCidrBlock = a})

-- | The ID of the VPC.
cssVPCId :: Lens' CreateSubnet Text
cssVPCId = lens _cssVPCId (\ s a -> s{_cssVPCId = a})

instance AWSRequest CreateSubnet where
        type Rs CreateSubnet = CreateSubnetResponse
        request = postQuery ec2
        response
          = receiveXML
              (\ s h x ->
                 CreateSubnetResponse' <$>
                   (x .@? "subnet") <*> (pure (fromEnum s)))

instance Hashable CreateSubnet where

instance NFData CreateSubnet where

instance ToHeaders CreateSubnet where
        toHeaders = const mempty

instance ToPath CreateSubnet where
        toPath = const "/"

instance ToQuery CreateSubnet where
        toQuery CreateSubnet'{..}
          = mconcat
              ["Action" =: ("CreateSubnet" :: ByteString),
               "Version" =: ("2016-11-15" :: ByteString),
               "Ipv6CidrBlock" =: _cssIPv6CidrBlock,
               "AvailabilityZone" =: _cssAvailabilityZone,
               "DryRun" =: _cssDryRun, "CidrBlock" =: _cssCidrBlock,
               "VpcId" =: _cssVPCId]

-- | Contains the output of CreateSubnet.
--
--
--
-- /See:/ 'createSubnetResponse' smart constructor.
data CreateSubnetResponse = CreateSubnetResponse'
  { _crersSubnet         :: !(Maybe Subnet)
  , _crersResponseStatus :: !Int
  } deriving (Eq, Read, Show, Data, Typeable, Generic)


-- | Creates a value of 'CreateSubnetResponse' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'crersSubnet' - Information about the subnet.
--
-- * 'crersResponseStatus' - -- | The response status code.
createSubnetResponse
    :: Int -- ^ 'crersResponseStatus'
    -> CreateSubnetResponse
createSubnetResponse pResponseStatus_ =
  CreateSubnetResponse'
    {_crersSubnet = Nothing, _crersResponseStatus = pResponseStatus_}


-- | Information about the subnet.
crersSubnet :: Lens' CreateSubnetResponse (Maybe Subnet)
crersSubnet = lens _crersSubnet (\ s a -> s{_crersSubnet = a})

-- | -- | The response status code.
crersResponseStatus :: Lens' CreateSubnetResponse Int
crersResponseStatus = lens _crersResponseStatus (\ s a -> s{_crersResponseStatus = a})

instance NFData CreateSubnetResponse where