UpdateSizeConstraintSet.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.WAF.UpdateSizeConstraintSet
-- 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)
--
-- Inserts or deletes < SizeConstraint> objects (filters) in a
-- < SizeConstraintSet>. For each 'SizeConstraint' object, you specify the
-- following values:
--
-- -   Whether to insert or delete the object from the array. If you want
--     to change a 'SizeConstraintSetUpdate' object, you delete the
--     existing object and add a new one.
-- -   The part of a web request that you want AWS WAF to evaluate, such as
--     the length of a query string or the length of the 'User-Agent'
--     header.
-- -   Whether to perform any transformations on the request, such as
--     converting it to lowercase, before checking its length. Note that
--     transformations of the request body are not supported because the
--     AWS resource forwards only the first '8192' bytes of your request to
--     AWS WAF.
-- -   A 'ComparisonOperator' used for evaluating the selected part of the
--     request against the specified 'Size', such as equals, greater than,
--     less than, and so on.
-- -   The length, in bytes, that you want AWS WAF to watch for in selected
--     part of the request. The length is computed after applying the
--     transformation.
--
-- For example, you can add a 'SizeConstraintSetUpdate' object that matches
-- web requests in which the length of the 'User-Agent' header is greater
-- than 100 bytes. You can then configure AWS WAF to block those requests.
--
-- To create and configure a 'SizeConstraintSet', perform the following
-- steps:
--
-- 1.  Create a 'SizeConstraintSet.' For more information, see
--     < CreateSizeConstraintSet>.
-- 2.  Use < GetChangeToken> to get the change token that you provide in
--     the 'ChangeToken' parameter of an 'UpdateSizeConstraintSet' request.
-- 3.  Submit an 'UpdateSizeConstraintSet' request to specify the part of
--     the request that you want AWS WAF to inspect (for example, the
--     header or the URI) and the value that you want AWS WAF to watch for.
--
-- For more information about how to use the AWS WAF API to allow or block
-- HTTP requests, see the
-- <http://docs.aws.amazon.com/waf/latest/developerguide/ AWS WAF Developer Guide>.
module Network.AWS.WAF.UpdateSizeConstraintSet
    (
    -- * Creating a Request
      updateSizeConstraintSet
    , UpdateSizeConstraintSet
    -- * Request Lenses
    , uscsSizeConstraintSetId
    , uscsChangeToken
    , uscsUpdates

    -- * Destructuring the Response
    , updateSizeConstraintSetResponse
    , UpdateSizeConstraintSetResponse
    -- * Response Lenses
    , uscsrsChangeToken
    , uscsrsResponseStatus
    ) where

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

-- | /See:/ 'updateSizeConstraintSet' smart constructor.
data UpdateSizeConstraintSet = UpdateSizeConstraintSet'
    { _uscsSizeConstraintSetId :: !Text
    , _uscsChangeToken         :: !Text
    , _uscsUpdates             :: ![SizeConstraintSetUpdate]
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'UpdateSizeConstraintSet' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'uscsSizeConstraintSetId'
--
-- * 'uscsChangeToken'
--
-- * 'uscsUpdates'
updateSizeConstraintSet
    :: Text -- ^ 'uscsSizeConstraintSetId'
    -> Text -- ^ 'uscsChangeToken'
    -> UpdateSizeConstraintSet
updateSizeConstraintSet pSizeConstraintSetId_ pChangeToken_ =
    UpdateSizeConstraintSet'
    { _uscsSizeConstraintSetId = pSizeConstraintSetId_
    , _uscsChangeToken = pChangeToken_
    , _uscsUpdates = mempty
    }

-- | The 'SizeConstraintSetId' of the < SizeConstraintSet> that you want to
-- update. 'SizeConstraintSetId' is returned by < CreateSizeConstraintSet>
-- and by < ListSizeConstraintSets>.
uscsSizeConstraintSetId :: Lens' UpdateSizeConstraintSet Text
uscsSizeConstraintSetId = lens _uscsSizeConstraintSetId (\ s a -> s{_uscsSizeConstraintSetId = a});

-- | The value returned by the most recent call to < GetChangeToken>.
uscsChangeToken :: Lens' UpdateSizeConstraintSet Text
uscsChangeToken = lens _uscsChangeToken (\ s a -> s{_uscsChangeToken = a});

-- | An array of 'SizeConstraintSetUpdate' objects that you want to insert
-- into or delete from a < SizeConstraintSet>. For more information, see
-- the applicable data types:
--
-- -   < SizeConstraintSetUpdate>: Contains 'Action' and 'SizeConstraint'
-- -   < SizeConstraint>: Contains 'FieldToMatch', 'TextTransformation',
--     'ComparisonOperator', and 'Size'
-- -   < FieldToMatch>: Contains 'Data' and 'Type'
uscsUpdates :: Lens' UpdateSizeConstraintSet [SizeConstraintSetUpdate]
uscsUpdates = lens _uscsUpdates (\ s a -> s{_uscsUpdates = a}) . _Coerce;

instance AWSRequest UpdateSizeConstraintSet where
        type Rs UpdateSizeConstraintSet =
             UpdateSizeConstraintSetResponse
        request = postJSON waf
        response
          = receiveJSON
              (\ s h x ->
                 UpdateSizeConstraintSetResponse' <$>
                   (x .?> "ChangeToken") <*> (pure (fromEnum s)))

instance Hashable UpdateSizeConstraintSet

instance NFData UpdateSizeConstraintSet

instance ToHeaders UpdateSizeConstraintSet where
        toHeaders
          = const
              (mconcat
                 ["X-Amz-Target" =#
                    ("AWSWAF_20150824.UpdateSizeConstraintSet" ::
                       ByteString),
                  "Content-Type" =#
                    ("application/x-amz-json-1.1" :: ByteString)])

instance ToJSON UpdateSizeConstraintSet where
        toJSON UpdateSizeConstraintSet'{..}
          = object
              (catMaybes
                 [Just
                    ("SizeConstraintSetId" .= _uscsSizeConstraintSetId),
                  Just ("ChangeToken" .= _uscsChangeToken),
                  Just ("Updates" .= _uscsUpdates)])

instance ToPath UpdateSizeConstraintSet where
        toPath = const "/"

instance ToQuery UpdateSizeConstraintSet where
        toQuery = const mempty

-- | /See:/ 'updateSizeConstraintSetResponse' smart constructor.
data UpdateSizeConstraintSetResponse = UpdateSizeConstraintSetResponse'
    { _uscsrsChangeToken    :: !(Maybe Text)
    , _uscsrsResponseStatus :: !Int
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'UpdateSizeConstraintSetResponse' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'uscsrsChangeToken'
--
-- * 'uscsrsResponseStatus'
updateSizeConstraintSetResponse
    :: Int -- ^ 'uscsrsResponseStatus'
    -> UpdateSizeConstraintSetResponse
updateSizeConstraintSetResponse pResponseStatus_ =
    UpdateSizeConstraintSetResponse'
    { _uscsrsChangeToken = Nothing
    , _uscsrsResponseStatus = pResponseStatus_
    }

-- | The 'ChangeToken' that you used to submit the 'UpdateSizeConstraintSet'
-- request. You can also use this value to query the status of the request.
-- For more information, see < GetChangeTokenStatus>.
uscsrsChangeToken :: Lens' UpdateSizeConstraintSetResponse (Maybe Text)
uscsrsChangeToken = lens _uscsrsChangeToken (\ s a -> s{_uscsrsChangeToken = a});

-- | The response status code.
uscsrsResponseStatus :: Lens' UpdateSizeConstraintSetResponse Int
uscsrsResponseStatus = lens _uscsrsResponseStatus (\ s a -> s{_uscsrsResponseStatus = a});

instance NFData UpdateSizeConstraintSetResponse