{-# 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.DetachVolume
-- 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)
--
-- Detaches an EBS volume from an instance. Make sure to unmount any file
-- systems on the device within your operating system before detaching the
-- volume. Failure to do so results in the volume being stuck in a busy
-- state while detaching.
--
-- If an Amazon EBS volume is the root device of an instance, it can\'t be
-- detached while the instance is running. To detach the root volume, stop
-- the instance first.
--
-- When a volume with an AWS Marketplace product code is detached from an
-- instance, the product code is no longer associated with the instance.
--
-- For more information, see
-- <http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ebs-detaching-volume.html Detaching an Amazon EBS Volume>
-- in the /Amazon Elastic Compute Cloud User Guide/.
--
-- /See:/ <http://docs.aws.amazon.com/AWSEC2/latest/APIReference/ApiReference-query-DetachVolume.html AWS API Reference> for DetachVolume.
module Network.AWS.EC2.DetachVolume
    (
    -- * Creating a Request
      detachVolume
    , DetachVolume
    -- * Request Lenses
    , dvInstanceId
    , dvForce
    , dvDevice
    , dvDryRun
    , dvVolumeId

    -- * Destructuring the Response
    , volumeAttachment
    , VolumeAttachment
    -- * Response Lenses
    , volInstanceId
    , volDeleteOnTermination
    , volState
    , volDevice
    , volVolumeId
    , volAttachTime
    ) where

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

-- | /See:/ 'detachVolume' smart constructor.
data DetachVolume = DetachVolume'
    { _dvInstanceId :: !(Maybe Text)
    , _dvForce      :: !(Maybe Bool)
    , _dvDevice     :: !(Maybe Text)
    , _dvDryRun     :: !(Maybe Bool)
    , _dvVolumeId   :: !Text
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'DetachVolume' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'dvInstanceId'
--
-- * 'dvForce'
--
-- * 'dvDevice'
--
-- * 'dvDryRun'
--
-- * 'dvVolumeId'
detachVolume
    :: Text -- ^ 'dvVolumeId'
    -> DetachVolume
detachVolume pVolumeId_ =
    DetachVolume'
    { _dvInstanceId = Nothing
    , _dvForce = Nothing
    , _dvDevice = Nothing
    , _dvDryRun = Nothing
    , _dvVolumeId = pVolumeId_
    }

-- | The ID of the instance.
dvInstanceId :: Lens' DetachVolume (Maybe Text)
dvInstanceId = lens _dvInstanceId (\ s a -> s{_dvInstanceId = a});

-- | Forces detachment if the previous detachment attempt did not occur
-- cleanly (for example, logging into an instance, unmounting the volume,
-- and detaching normally). This option can lead to data loss or a
-- corrupted file system. Use this option only as a last resort to detach a
-- volume from a failed instance. The instance won\'t have an opportunity
-- to flush file system caches or file system metadata. If you use this
-- option, you must perform file system check and repair procedures.
dvForce :: Lens' DetachVolume (Maybe Bool)
dvForce = lens _dvForce (\ s a -> s{_dvForce = a});

-- | The device name.
dvDevice :: Lens' DetachVolume (Maybe Text)
dvDevice = lens _dvDevice (\ s a -> s{_dvDevice = 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'.
dvDryRun :: Lens' DetachVolume (Maybe Bool)
dvDryRun = lens _dvDryRun (\ s a -> s{_dvDryRun = a});

-- | The ID of the volume.
dvVolumeId :: Lens' DetachVolume Text
dvVolumeId = lens _dvVolumeId (\ s a -> s{_dvVolumeId = a});

instance AWSRequest DetachVolume where
        type Sv DetachVolume = EC2
        type Rs DetachVolume = VolumeAttachment
        request = post
        response = receiveXML (\ s h x -> parseXML x)

instance ToHeaders DetachVolume where
        toHeaders = const mempty

instance ToPath DetachVolume where
        toPath = const "/"

instance ToQuery DetachVolume where
        toQuery DetachVolume'{..}
          = mconcat
              ["Action" =: ("DetachVolume" :: ByteString),
               "Version" =: ("2015-04-15" :: ByteString),
               "InstanceId" =: _dvInstanceId, "Force" =: _dvForce,
               "Device" =: _dvDevice, "DryRun" =: _dvDryRun,
               "VolumeId" =: _dvVolumeId]