{-# 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.GetConsoleOutput
-- 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)
--
-- Gets the console output for the specified instance.
--
-- Instances do not have a physical monitor through which you can view
-- their console output. They also lack physical controls that allow you to
-- power up, reboot, or shut them down. To allow these actions, we provide
-- them through the Amazon EC2 API and command line interface.
--
-- Instance console output is buffered and posted shortly after instance
-- boot, reboot, and termination. Amazon EC2 preserves the most recent 64
-- KB output which is available for at least one hour after the most recent
-- post.
--
-- For Linux instances, the instance console output displays the exact
-- console output that would normally be displayed on a physical monitor
-- attached to a computer. This output is buffered because the instance
-- produces it and then posts it to a store where the instance\'s owner can
-- retrieve it.
--
-- For Windows instances, the instance console output includes output from
-- the EC2Config service.
--
-- /See:/ <http://docs.aws.amazon.com/AWSEC2/latest/APIReference/ApiReference-query-GetConsoleOutput.html AWS API Reference> for GetConsoleOutput.
module Network.AWS.EC2.GetConsoleOutput
    (
    -- * Creating a Request
      getConsoleOutput
    , GetConsoleOutput
    -- * Request Lenses
    , gcoDryRun
    , gcoInstanceId

    -- * Destructuring the Response
    , getConsoleOutputResponse
    , GetConsoleOutputResponse
    -- * Response Lenses
    , gcorsInstanceId
    , gcorsOutput
    , gcorsTimestamp
    , gcorsResponseStatus
    ) 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:/ 'getConsoleOutput' smart constructor.
data GetConsoleOutput = GetConsoleOutput'
    { _gcoDryRun     :: !(Maybe Bool)
    , _gcoInstanceId :: !Text
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'GetConsoleOutput' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'gcoDryRun'
--
-- * 'gcoInstanceId'
getConsoleOutput
    :: Text -- ^ 'gcoInstanceId'
    -> GetConsoleOutput
getConsoleOutput pInstanceId_ =
    GetConsoleOutput'
    { _gcoDryRun = Nothing
    , _gcoInstanceId = pInstanceId_
    }

-- | 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'.
gcoDryRun :: Lens' GetConsoleOutput (Maybe Bool)
gcoDryRun = lens _gcoDryRun (\ s a -> s{_gcoDryRun = a});

-- | The ID of the instance.
gcoInstanceId :: Lens' GetConsoleOutput Text
gcoInstanceId = lens _gcoInstanceId (\ s a -> s{_gcoInstanceId = a});

instance AWSRequest GetConsoleOutput where
        type Rs GetConsoleOutput = GetConsoleOutputResponse
        request = postQuery eC2
        response
          = receiveXML
              (\ s h x ->
                 GetConsoleOutputResponse' <$>
                   (x .@? "instanceId") <*> (x .@? "output") <*>
                     (x .@? "timestamp")
                     <*> (pure (fromEnum s)))

instance ToHeaders GetConsoleOutput where
        toHeaders = const mempty

instance ToPath GetConsoleOutput where
        toPath = const "/"

instance ToQuery GetConsoleOutput where
        toQuery GetConsoleOutput'{..}
          = mconcat
              ["Action" =: ("GetConsoleOutput" :: ByteString),
               "Version" =: ("2015-04-15" :: ByteString),
               "DryRun" =: _gcoDryRun,
               "InstanceId" =: _gcoInstanceId]

-- | /See:/ 'getConsoleOutputResponse' smart constructor.
data GetConsoleOutputResponse = GetConsoleOutputResponse'
    { _gcorsInstanceId     :: !(Maybe Text)
    , _gcorsOutput         :: !(Maybe Text)
    , _gcorsTimestamp      :: !(Maybe ISO8601)
    , _gcorsResponseStatus :: !Int
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'GetConsoleOutputResponse' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'gcorsInstanceId'
--
-- * 'gcorsOutput'
--
-- * 'gcorsTimestamp'
--
-- * 'gcorsResponseStatus'
getConsoleOutputResponse
    :: Int -- ^ 'gcorsResponseStatus'
    -> GetConsoleOutputResponse
getConsoleOutputResponse pResponseStatus_ =
    GetConsoleOutputResponse'
    { _gcorsInstanceId = Nothing
    , _gcorsOutput = Nothing
    , _gcorsTimestamp = Nothing
    , _gcorsResponseStatus = pResponseStatus_
    }

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

-- | The console output, Base64 encoded.
gcorsOutput :: Lens' GetConsoleOutputResponse (Maybe Text)
gcorsOutput = lens _gcorsOutput (\ s a -> s{_gcorsOutput = a});

-- | The time the output was last updated.
gcorsTimestamp :: Lens' GetConsoleOutputResponse (Maybe UTCTime)
gcorsTimestamp = lens _gcorsTimestamp (\ s a -> s{_gcorsTimestamp = a}) . mapping _Time;

-- | The response status code.
gcorsResponseStatus :: Lens' GetConsoleOutputResponse Int
gcorsResponseStatus = lens _gcorsResponseStatus (\ s a -> s{_gcorsResponseStatus = a});