{-# 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.CloudFormation.DescribeStackResources
-- 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)
--
-- Returns AWS resource descriptions for running and deleted stacks. If @StackName@ is specified, all the associated resources that are part of the stack are returned. If @PhysicalResourceId@ is specified, the associated resources of the stack that the resource belongs to are returned.
--
--
-- For deleted stacks, @DescribeStackResources@ returns resource information for up to 90 days after the stack has been deleted.
--
-- You must specify either @StackName@ or @PhysicalResourceId@ , but not both. In addition, you can specify @LogicalResourceId@ to filter the returned result. For more information about resources, the @LogicalResourceId@ and @PhysicalResourceId@ , go to the <http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/ AWS CloudFormation User Guide> .
--
module Network.AWS.CloudFormation.DescribeStackResources
    (
    -- * Creating a Request
      describeStackResources
    , DescribeStackResources
    -- * Request Lenses
    , dsrLogicalResourceId
    , dsrPhysicalResourceId
    , dsrStackName

    -- * Destructuring the Response
    , describeStackResourcesResponse
    , DescribeStackResourcesResponse
    -- * Response Lenses
    , dsrsrsStackResources
    , dsrsrsResponseStatus
    ) where

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

-- | The input for 'DescribeStackResources' action.
--
--
--
-- /See:/ 'describeStackResources' smart constructor.
data DescribeStackResources = DescribeStackResources'
    { _dsrLogicalResourceId  :: !(Maybe Text)
    , _dsrPhysicalResourceId :: !(Maybe Text)
    , _dsrStackName          :: !(Maybe Text)
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'DescribeStackResources' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'dsrLogicalResourceId' - The logical name of the resource as specified in the template. Default: There is no default value.
--
-- * 'dsrPhysicalResourceId' - The name or unique identifier that corresponds to a physical instance ID of a resource supported by AWS CloudFormation. For example, for an Amazon Elastic Compute Cloud (EC2) instance, @PhysicalResourceId@ corresponds to the @InstanceId@ . You can pass the EC2 @InstanceId@ to @DescribeStackResources@ to find which stack the instance belongs to and what other resources are part of the stack. Required: Conditional. If you do not specify @PhysicalResourceId@ , you must specify @StackName@ . Default: There is no default value.
--
-- * 'dsrStackName' - The name or the unique stack ID that is associated with the stack, which are not always interchangeable:     * Running stacks: You can specify either the stack's name or its unique stack ID.     * Deleted stacks: You must specify the unique stack ID. Default: There is no default value. Required: Conditional. If you do not specify @StackName@ , you must specify @PhysicalResourceId@ .
describeStackResources
    :: DescribeStackResources
describeStackResources =
    DescribeStackResources'
    { _dsrLogicalResourceId = Nothing
    , _dsrPhysicalResourceId = Nothing
    , _dsrStackName = Nothing
    }

-- | The logical name of the resource as specified in the template. Default: There is no default value.
dsrLogicalResourceId :: Lens' DescribeStackResources (Maybe Text)
dsrLogicalResourceId = lens _dsrLogicalResourceId (\ s a -> s{_dsrLogicalResourceId = a});

-- | The name or unique identifier that corresponds to a physical instance ID of a resource supported by AWS CloudFormation. For example, for an Amazon Elastic Compute Cloud (EC2) instance, @PhysicalResourceId@ corresponds to the @InstanceId@ . You can pass the EC2 @InstanceId@ to @DescribeStackResources@ to find which stack the instance belongs to and what other resources are part of the stack. Required: Conditional. If you do not specify @PhysicalResourceId@ , you must specify @StackName@ . Default: There is no default value.
dsrPhysicalResourceId :: Lens' DescribeStackResources (Maybe Text)
dsrPhysicalResourceId = lens _dsrPhysicalResourceId (\ s a -> s{_dsrPhysicalResourceId = a});

-- | The name or the unique stack ID that is associated with the stack, which are not always interchangeable:     * Running stacks: You can specify either the stack's name or its unique stack ID.     * Deleted stacks: You must specify the unique stack ID. Default: There is no default value. Required: Conditional. If you do not specify @StackName@ , you must specify @PhysicalResourceId@ .
dsrStackName :: Lens' DescribeStackResources (Maybe Text)
dsrStackName = lens _dsrStackName (\ s a -> s{_dsrStackName = a});

instance AWSRequest DescribeStackResources where
        type Rs DescribeStackResources =
             DescribeStackResourcesResponse
        request = postQuery cloudFormation
        response
          = receiveXMLWrapper "DescribeStackResourcesResult"
              (\ s h x ->
                 DescribeStackResourcesResponse' <$>
                   (x .@? "StackResources" .!@ mempty >>=
                      may (parseXMLList "member"))
                     <*> (pure (fromEnum s)))

instance Hashable DescribeStackResources

instance NFData DescribeStackResources

instance ToHeaders DescribeStackResources where
        toHeaders = const mempty

instance ToPath DescribeStackResources where
        toPath = const "/"

instance ToQuery DescribeStackResources where
        toQuery DescribeStackResources'{..}
          = mconcat
              ["Action" =:
                 ("DescribeStackResources" :: ByteString),
               "Version" =: ("2010-05-15" :: ByteString),
               "LogicalResourceId" =: _dsrLogicalResourceId,
               "PhysicalResourceId" =: _dsrPhysicalResourceId,
               "StackName" =: _dsrStackName]

-- | The output for a 'DescribeStackResources' action.
--
--
--
-- /See:/ 'describeStackResourcesResponse' smart constructor.
data DescribeStackResourcesResponse = DescribeStackResourcesResponse'
    { _dsrsrsStackResources :: !(Maybe [StackResource])
    , _dsrsrsResponseStatus :: !Int
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'DescribeStackResourcesResponse' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'dsrsrsStackResources' - A list of @StackResource@ structures.
--
-- * 'dsrsrsResponseStatus' - -- | The response status code.
describeStackResourcesResponse
    :: Int -- ^ 'dsrsrsResponseStatus'
    -> DescribeStackResourcesResponse
describeStackResourcesResponse pResponseStatus_ =
    DescribeStackResourcesResponse'
    { _dsrsrsStackResources = Nothing
    , _dsrsrsResponseStatus = pResponseStatus_
    }

-- | A list of @StackResource@ structures.
dsrsrsStackResources :: Lens' DescribeStackResourcesResponse [StackResource]
dsrsrsStackResources = lens _dsrsrsStackResources (\ s a -> s{_dsrsrsStackResources = a}) . _Default . _Coerce;

-- | -- | The response status code.
dsrsrsResponseStatus :: Lens' DescribeStackResourcesResponse Int
dsrsrsResponseStatus = lens _dsrsrsResponseStatus (\ s a -> s{_dsrsrsResponseStatus = a});

instance NFData DescribeStackResourcesResponse