{-# 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.SWF.RecordActivityTaskHeartbeat
-- 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)
--
-- Used by activity workers to report to the service that the 'ActivityTask' represented by the specified @taskToken@ is still making progress. The worker can also specify details of the progress, for example percent complete, using the @details@ parameter. This action can also be used by the worker as a mechanism to check if cancellation is being requested for the activity task. If a cancellation is being attempted for the specified task, then the boolean @cancelRequested@ flag returned by the service is set to @true@ .
--
--
-- This action resets the @taskHeartbeatTimeout@ clock. The @taskHeartbeatTimeout@ is specified in 'RegisterActivityType' .
--
-- This action doesn't in itself create an event in the workflow execution history. However, if the task times out, the workflow execution history contains a @ActivityTaskTimedOut@ event that contains the information from the last heartbeat generated by the activity worker.
--
-- /Important:/ If the @cancelRequested@ flag returns @true@ , a cancellation is being attempted. If the worker can cancel the activity, it should respond with 'RespondActivityTaskCanceled' . Otherwise, it should ignore the cancellation request.
--
-- __Access Control__
--
-- You can use IAM policies to control this action's access to Amazon SWF resources as follows:
--
--     * Use a @Resource@ element with the domain name to limit the action to only specified domains.
--
--     * Use an @Action@ element to allow or deny permission to call this action.
--
--     * You cannot use an IAM policy to constrain this action's parameters.
--
--
--
-- If the caller doesn't have sufficient permissions to invoke the action, or the parameter values fall outside the specified constraints, the action fails. The associated event attribute's @cause@ parameter is set to @OPERATION_NOT_PERMITTED@ . For details and example IAM policies, see <http://docs.aws.amazon.com/amazonswf/latest/developerguide/swf-dev-iam.html Using IAM to Manage Access to Amazon SWF Workflows> in the /Amazon SWF Developer Guide/ .
--
module Network.AWS.SWF.RecordActivityTaskHeartbeat
    (
    -- * Creating a Request
      recordActivityTaskHeartbeat
    , RecordActivityTaskHeartbeat
    -- * Request Lenses
    , rathDetails
    , rathTaskToken

    -- * Destructuring the Response
    , recordActivityTaskHeartbeatResponse
    , RecordActivityTaskHeartbeatResponse
    -- * Response Lenses
    , rathrsResponseStatus
    , rathrsCancelRequested
    ) where

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

-- | /See:/ 'recordActivityTaskHeartbeat' smart constructor.
data RecordActivityTaskHeartbeat = RecordActivityTaskHeartbeat'
  { _rathDetails   :: !(Maybe Text)
  , _rathTaskToken :: !Text
  } deriving (Eq, Read, Show, Data, Typeable, Generic)


-- | Creates a value of 'RecordActivityTaskHeartbeat' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'rathDetails' - If specified, contains details about the progress of the task.
--
-- * 'rathTaskToken' - The @taskToken@ of the 'ActivityTask' . /Important:/ @taskToken@ is generated by the service and should be treated as an opaque value. If the task is passed to another process, its @taskToken@ must also be passed. This enables it to provide its progress and respond with results.
recordActivityTaskHeartbeat
    :: Text -- ^ 'rathTaskToken'
    -> RecordActivityTaskHeartbeat
recordActivityTaskHeartbeat pTaskToken_ =
  RecordActivityTaskHeartbeat'
    {_rathDetails = Nothing, _rathTaskToken = pTaskToken_}


-- | If specified, contains details about the progress of the task.
rathDetails :: Lens' RecordActivityTaskHeartbeat (Maybe Text)
rathDetails = lens _rathDetails (\ s a -> s{_rathDetails = a})

-- | The @taskToken@ of the 'ActivityTask' . /Important:/ @taskToken@ is generated by the service and should be treated as an opaque value. If the task is passed to another process, its @taskToken@ must also be passed. This enables it to provide its progress and respond with results.
rathTaskToken :: Lens' RecordActivityTaskHeartbeat Text
rathTaskToken = lens _rathTaskToken (\ s a -> s{_rathTaskToken = a})

instance AWSRequest RecordActivityTaskHeartbeat where
        type Rs RecordActivityTaskHeartbeat =
             RecordActivityTaskHeartbeatResponse
        request = postJSON swf
        response
          = receiveJSON
              (\ s h x ->
                 RecordActivityTaskHeartbeatResponse' <$>
                   (pure (fromEnum s)) <*> (x .:> "cancelRequested"))

instance Hashable RecordActivityTaskHeartbeat where

instance NFData RecordActivityTaskHeartbeat where

instance ToHeaders RecordActivityTaskHeartbeat where
        toHeaders
          = const
              (mconcat
                 ["X-Amz-Target" =#
                    ("SimpleWorkflowService.RecordActivityTaskHeartbeat"
                       :: ByteString),
                  "Content-Type" =#
                    ("application/x-amz-json-1.0" :: ByteString)])

instance ToJSON RecordActivityTaskHeartbeat where
        toJSON RecordActivityTaskHeartbeat'{..}
          = object
              (catMaybes
                 [("details" .=) <$> _rathDetails,
                  Just ("taskToken" .= _rathTaskToken)])

instance ToPath RecordActivityTaskHeartbeat where
        toPath = const "/"

instance ToQuery RecordActivityTaskHeartbeat where
        toQuery = const mempty

-- | Status information about an activity task.
--
--
--
-- /See:/ 'recordActivityTaskHeartbeatResponse' smart constructor.
data RecordActivityTaskHeartbeatResponse = RecordActivityTaskHeartbeatResponse'
  { _rathrsResponseStatus  :: !Int
  , _rathrsCancelRequested :: !Bool
  } deriving (Eq, Read, Show, Data, Typeable, Generic)


-- | Creates a value of 'RecordActivityTaskHeartbeatResponse' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'rathrsResponseStatus' - -- | The response status code.
--
-- * 'rathrsCancelRequested' - Set to @true@ if cancellation of the task is requested.
recordActivityTaskHeartbeatResponse
    :: Int -- ^ 'rathrsResponseStatus'
    -> Bool -- ^ 'rathrsCancelRequested'
    -> RecordActivityTaskHeartbeatResponse
recordActivityTaskHeartbeatResponse pResponseStatus_ pCancelRequested_ =
  RecordActivityTaskHeartbeatResponse'
    { _rathrsResponseStatus = pResponseStatus_
    , _rathrsCancelRequested = pCancelRequested_
    }


-- | -- | The response status code.
rathrsResponseStatus :: Lens' RecordActivityTaskHeartbeatResponse Int
rathrsResponseStatus = lens _rathrsResponseStatus (\ s a -> s{_rathrsResponseStatus = a})

-- | Set to @true@ if cancellation of the task is requested.
rathrsCancelRequested :: Lens' RecordActivityTaskHeartbeatResponse Bool
rathrsCancelRequested = lens _rathrsCancelRequested (\ s a -> s{_rathrsCancelRequested = a})

instance NFData RecordActivityTaskHeartbeatResponse
         where