{-# 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.Glue.GetUserDefinedFunction
-- Copyright   : (c) 2013-2023 Brendan Hay
-- License     : Mozilla Public License, v. 2.0.
-- Maintainer  : Brendan Hay
-- Stability   : auto-generated
-- Portability : non-portable (GHC extensions)
--
-- Retrieves a specified function definition from the Data Catalog.
module Amazonka.Glue.GetUserDefinedFunction
  ( -- * Creating a Request
    GetUserDefinedFunction (..),
    newGetUserDefinedFunction,

    -- * Request Lenses
    getUserDefinedFunction_catalogId,
    getUserDefinedFunction_databaseName,
    getUserDefinedFunction_functionName,

    -- * Destructuring the Response
    GetUserDefinedFunctionResponse (..),
    newGetUserDefinedFunctionResponse,

    -- * Response Lenses
    getUserDefinedFunctionResponse_userDefinedFunction,
    getUserDefinedFunctionResponse_httpStatus,
  )
where

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

-- | /See:/ 'newGetUserDefinedFunction' smart constructor.
data GetUserDefinedFunction = GetUserDefinedFunction'
  { -- | The ID of the Data Catalog where the function to be retrieved is
    -- located. If none is provided, the Amazon Web Services account ID is used
    -- by default.
    catalogId :: Prelude.Maybe Prelude.Text,
    -- | The name of the catalog database where the function is located.
    databaseName :: Prelude.Text,
    -- | The name of the function.
    functionName :: Prelude.Text
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'GetUserDefinedFunction' 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:
--
-- 'catalogId', 'getUserDefinedFunction_catalogId' - The ID of the Data Catalog where the function to be retrieved is
-- located. If none is provided, the Amazon Web Services account ID is used
-- by default.
--
-- 'databaseName', 'getUserDefinedFunction_databaseName' - The name of the catalog database where the function is located.
--
-- 'functionName', 'getUserDefinedFunction_functionName' - The name of the function.
newGetUserDefinedFunction ::
  -- | 'databaseName'
  Prelude.Text ->
  -- | 'functionName'
  Prelude.Text ->
  GetUserDefinedFunction
newGetUserDefinedFunction
  pDatabaseName_
  pFunctionName_ =
    GetUserDefinedFunction'
      { catalogId =
          Prelude.Nothing,
        databaseName = pDatabaseName_,
        functionName = pFunctionName_
      }

-- | The ID of the Data Catalog where the function to be retrieved is
-- located. If none is provided, the Amazon Web Services account ID is used
-- by default.
getUserDefinedFunction_catalogId :: Lens.Lens' GetUserDefinedFunction (Prelude.Maybe Prelude.Text)
getUserDefinedFunction_catalogId = Lens.lens (\GetUserDefinedFunction' {catalogId} -> catalogId) (\s@GetUserDefinedFunction' {} a -> s {catalogId = a} :: GetUserDefinedFunction)

-- | The name of the catalog database where the function is located.
getUserDefinedFunction_databaseName :: Lens.Lens' GetUserDefinedFunction Prelude.Text
getUserDefinedFunction_databaseName = Lens.lens (\GetUserDefinedFunction' {databaseName} -> databaseName) (\s@GetUserDefinedFunction' {} a -> s {databaseName = a} :: GetUserDefinedFunction)

-- | The name of the function.
getUserDefinedFunction_functionName :: Lens.Lens' GetUserDefinedFunction Prelude.Text
getUserDefinedFunction_functionName = Lens.lens (\GetUserDefinedFunction' {functionName} -> functionName) (\s@GetUserDefinedFunction' {} a -> s {functionName = a} :: GetUserDefinedFunction)

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

instance Prelude.Hashable GetUserDefinedFunction where
  hashWithSalt _salt GetUserDefinedFunction' {..} =
    _salt
      `Prelude.hashWithSalt` catalogId
      `Prelude.hashWithSalt` databaseName
      `Prelude.hashWithSalt` functionName

instance Prelude.NFData GetUserDefinedFunction where
  rnf GetUserDefinedFunction' {..} =
    Prelude.rnf catalogId
      `Prelude.seq` Prelude.rnf databaseName
      `Prelude.seq` Prelude.rnf functionName

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

instance Data.ToJSON GetUserDefinedFunction where
  toJSON GetUserDefinedFunction' {..} =
    Data.object
      ( Prelude.catMaybes
          [ ("CatalogId" Data..=) Prelude.<$> catalogId,
            Prelude.Just ("DatabaseName" Data..= databaseName),
            Prelude.Just ("FunctionName" Data..= functionName)
          ]
      )

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

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

-- | /See:/ 'newGetUserDefinedFunctionResponse' smart constructor.
data GetUserDefinedFunctionResponse = GetUserDefinedFunctionResponse'
  { -- | The requested function definition.
    userDefinedFunction :: Prelude.Maybe UserDefinedFunction,
    -- | The response's http status code.
    httpStatus :: Prelude.Int
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'GetUserDefinedFunctionResponse' 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:
--
-- 'userDefinedFunction', 'getUserDefinedFunctionResponse_userDefinedFunction' - The requested function definition.
--
-- 'httpStatus', 'getUserDefinedFunctionResponse_httpStatus' - The response's http status code.
newGetUserDefinedFunctionResponse ::
  -- | 'httpStatus'
  Prelude.Int ->
  GetUserDefinedFunctionResponse
newGetUserDefinedFunctionResponse pHttpStatus_ =
  GetUserDefinedFunctionResponse'
    { userDefinedFunction =
        Prelude.Nothing,
      httpStatus = pHttpStatus_
    }

-- | The requested function definition.
getUserDefinedFunctionResponse_userDefinedFunction :: Lens.Lens' GetUserDefinedFunctionResponse (Prelude.Maybe UserDefinedFunction)
getUserDefinedFunctionResponse_userDefinedFunction = Lens.lens (\GetUserDefinedFunctionResponse' {userDefinedFunction} -> userDefinedFunction) (\s@GetUserDefinedFunctionResponse' {} a -> s {userDefinedFunction = a} :: GetUserDefinedFunctionResponse)

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

instance
  Prelude.NFData
    GetUserDefinedFunctionResponse
  where
  rnf GetUserDefinedFunctionResponse' {..} =
    Prelude.rnf userDefinedFunction
      `Prelude.seq` Prelude.rnf httpStatus