{-# LANGUAGE DeriveGeneric #-}
{-# LANGUAGE DuplicateRecordFields #-}
{-# LANGUAGE NamedFieldPuns #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE RecordWildCards #-}
{-# LANGUAGE StrictData #-}
{-# LANGUAGE TypeFamilies #-}
{-# LANGUAGE NoImplicitPrelude #-}
{-# OPTIONS_GHC -fno-warn-unused-binds #-}
{-# OPTIONS_GHC -fno-warn-unused-imports #-}
{-# OPTIONS_GHC -fno-warn-unused-matches #-}

-- Derived from AWS service descriptions, licensed under Apache 2.0.

-- |
-- Module      : Amazonka.EMR.DescribeCluster
-- Copyright   : (c) 2013-2023 Brendan Hay
-- License     : Mozilla Public License, v. 2.0.
-- Maintainer  : Brendan Hay
-- Stability   : auto-generated
-- Portability : non-portable (GHC extensions)
--
-- Provides cluster-level details including status, hardware and software
-- configuration, VPC settings, and so on.
module Amazonka.EMR.DescribeCluster
  ( -- * Creating a Request
    DescribeCluster (..),
    newDescribeCluster,

    -- * Request Lenses
    describeCluster_clusterId,

    -- * Destructuring the Response
    DescribeClusterResponse (..),
    newDescribeClusterResponse,

    -- * Response Lenses
    describeClusterResponse_httpStatus,
    describeClusterResponse_cluster,
  )
where

import qualified Amazonka.Core as Core
import qualified Amazonka.Core.Lens.Internal as Lens
import qualified Amazonka.Data as Data
import Amazonka.EMR.Types
import qualified Amazonka.Prelude as Prelude
import qualified Amazonka.Request as Request
import qualified Amazonka.Response as Response

-- | This input determines which cluster to describe.
--
-- /See:/ 'newDescribeCluster' smart constructor.
data DescribeCluster = DescribeCluster'
  { -- | The identifier of the cluster to describe.
    clusterId :: Prelude.Text
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'DescribeCluster' with all optional fields omitted.
--
-- Use <https://hackage.haskell.org/package/generic-lens generic-lens> or <https://hackage.haskell.org/package/optics optics> to modify other optional fields.
--
-- The following record fields are available, with the corresponding lenses provided
-- for backwards compatibility:
--
-- 'clusterId', 'describeCluster_clusterId' - The identifier of the cluster to describe.
newDescribeCluster ::
  -- | 'clusterId'
  Prelude.Text ->
  DescribeCluster
newDescribeCluster pClusterId_ =
  DescribeCluster' {clusterId = pClusterId_}

-- | The identifier of the cluster to describe.
describeCluster_clusterId :: Lens.Lens' DescribeCluster Prelude.Text
describeCluster_clusterId = Lens.lens (\DescribeCluster' {clusterId} -> clusterId) (\s@DescribeCluster' {} a -> s {clusterId = a} :: DescribeCluster)

instance Core.AWSRequest DescribeCluster where
  type
    AWSResponse DescribeCluster =
      DescribeClusterResponse
  request overrides =
    Request.postJSON (overrides defaultService)
  response =
    Response.receiveJSON
      ( \s h x ->
          DescribeClusterResponse'
            Prelude.<$> (Prelude.pure (Prelude.fromEnum s))
            Prelude.<*> (x Data..:> "Cluster")
      )

instance Prelude.Hashable DescribeCluster where
  hashWithSalt _salt DescribeCluster' {..} =
    _salt `Prelude.hashWithSalt` clusterId

instance Prelude.NFData DescribeCluster where
  rnf DescribeCluster' {..} = Prelude.rnf clusterId

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

instance Data.ToJSON DescribeCluster where
  toJSON DescribeCluster' {..} =
    Data.object
      ( Prelude.catMaybes
          [Prelude.Just ("ClusterId" Data..= clusterId)]
      )

instance Data.ToPath DescribeCluster where
  toPath = Prelude.const "/"

instance Data.ToQuery DescribeCluster where
  toQuery = Prelude.const Prelude.mempty

-- | This output contains the description of the cluster.
--
-- /See:/ 'newDescribeClusterResponse' smart constructor.
data DescribeClusterResponse = DescribeClusterResponse'
  { -- | The response's http status code.
    httpStatus :: Prelude.Int,
    -- | This output contains the details for the requested cluster.
    cluster :: Cluster
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'DescribeClusterResponse' with all optional fields omitted.
--
-- Use <https://hackage.haskell.org/package/generic-lens generic-lens> or <https://hackage.haskell.org/package/optics optics> to modify other optional fields.
--
-- The following record fields are available, with the corresponding lenses provided
-- for backwards compatibility:
--
-- 'httpStatus', 'describeClusterResponse_httpStatus' - The response's http status code.
--
-- 'cluster', 'describeClusterResponse_cluster' - This output contains the details for the requested cluster.
newDescribeClusterResponse ::
  -- | 'httpStatus'
  Prelude.Int ->
  -- | 'cluster'
  Cluster ->
  DescribeClusterResponse
newDescribeClusterResponse pHttpStatus_ pCluster_ =
  DescribeClusterResponse'
    { httpStatus = pHttpStatus_,
      cluster = pCluster_
    }

-- | The response's http status code.
describeClusterResponse_httpStatus :: Lens.Lens' DescribeClusterResponse Prelude.Int
describeClusterResponse_httpStatus = Lens.lens (\DescribeClusterResponse' {httpStatus} -> httpStatus) (\s@DescribeClusterResponse' {} a -> s {httpStatus = a} :: DescribeClusterResponse)

-- | This output contains the details for the requested cluster.
describeClusterResponse_cluster :: Lens.Lens' DescribeClusterResponse Cluster
describeClusterResponse_cluster = Lens.lens (\DescribeClusterResponse' {cluster} -> cluster) (\s@DescribeClusterResponse' {} a -> s {cluster = a} :: DescribeClusterResponse)

instance Prelude.NFData DescribeClusterResponse where
  rnf DescribeClusterResponse' {..} =
    Prelude.rnf httpStatus
      `Prelude.seq` Prelude.rnf cluster