{-# 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.Lambda.GetFunction
-- Copyright   : (c) 2013-2023 Brendan Hay
-- License     : Mozilla Public License, v. 2.0.
-- Maintainer  : Brendan Hay
-- Stability   : auto-generated
-- Portability : non-portable (GHC extensions)
--
-- Returns information about the function or function version, with a link
-- to download the deployment package that\'s valid for 10 minutes. If you
-- specify a function version, only details that are specific to that
-- version are returned.
module Amazonka.Lambda.GetFunction
  ( -- * Creating a Request
    GetFunction (..),
    newGetFunction,

    -- * Request Lenses
    getFunction_qualifier,
    getFunction_functionName,

    -- * Destructuring the Response
    GetFunctionResponse (..),
    newGetFunctionResponse,

    -- * Response Lenses
    getFunctionResponse_code,
    getFunctionResponse_concurrency,
    getFunctionResponse_configuration,
    getFunctionResponse_tags,
    getFunctionResponse_httpStatus,
  )
where

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

-- | /See:/ 'newGetFunction' smart constructor.
data GetFunction = GetFunction'
  { -- | Specify a version or alias to get details about a published version of
    -- the function.
    qualifier :: Prelude.Maybe Prelude.Text,
    -- | The name of the Lambda function, version, or alias.
    --
    -- __Name formats__
    --
    -- -   __Function name__ – @my-function@ (name-only), @my-function:v1@
    --     (with alias).
    --
    -- -   __Function ARN__ –
    --     @arn:aws:lambda:us-west-2:123456789012:function:my-function@.
    --
    -- -   __Partial ARN__ – @123456789012:function:my-function@.
    --
    -- You can append a version number or alias to any of the formats. The
    -- length constraint applies only to the full ARN. If you specify only the
    -- function name, it is limited to 64 characters in length.
    functionName :: Prelude.Text
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'GetFunction' 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:
--
-- 'qualifier', 'getFunction_qualifier' - Specify a version or alias to get details about a published version of
-- the function.
--
-- 'functionName', 'getFunction_functionName' - The name of the Lambda function, version, or alias.
--
-- __Name formats__
--
-- -   __Function name__ – @my-function@ (name-only), @my-function:v1@
--     (with alias).
--
-- -   __Function ARN__ –
--     @arn:aws:lambda:us-west-2:123456789012:function:my-function@.
--
-- -   __Partial ARN__ – @123456789012:function:my-function@.
--
-- You can append a version number or alias to any of the formats. The
-- length constraint applies only to the full ARN. If you specify only the
-- function name, it is limited to 64 characters in length.
newGetFunction ::
  -- | 'functionName'
  Prelude.Text ->
  GetFunction
newGetFunction pFunctionName_ =
  GetFunction'
    { qualifier = Prelude.Nothing,
      functionName = pFunctionName_
    }

-- | Specify a version or alias to get details about a published version of
-- the function.
getFunction_qualifier :: Lens.Lens' GetFunction (Prelude.Maybe Prelude.Text)
getFunction_qualifier = Lens.lens (\GetFunction' {qualifier} -> qualifier) (\s@GetFunction' {} a -> s {qualifier = a} :: GetFunction)

-- | The name of the Lambda function, version, or alias.
--
-- __Name formats__
--
-- -   __Function name__ – @my-function@ (name-only), @my-function:v1@
--     (with alias).
--
-- -   __Function ARN__ –
--     @arn:aws:lambda:us-west-2:123456789012:function:my-function@.
--
-- -   __Partial ARN__ – @123456789012:function:my-function@.
--
-- You can append a version number or alias to any of the formats. The
-- length constraint applies only to the full ARN. If you specify only the
-- function name, it is limited to 64 characters in length.
getFunction_functionName :: Lens.Lens' GetFunction Prelude.Text
getFunction_functionName = Lens.lens (\GetFunction' {functionName} -> functionName) (\s@GetFunction' {} a -> s {functionName = a} :: GetFunction)

instance Core.AWSRequest GetFunction where
  type AWSResponse GetFunction = GetFunctionResponse
  request overrides =
    Request.get (overrides defaultService)
  response =
    Response.receiveJSON
      ( \s h x ->
          GetFunctionResponse'
            Prelude.<$> (x Data..?> "Code")
            Prelude.<*> (x Data..?> "Concurrency")
            Prelude.<*> (x Data..?> "Configuration")
            Prelude.<*> (x Data..?> "Tags" Core..!@ Prelude.mempty)
            Prelude.<*> (Prelude.pure (Prelude.fromEnum s))
      )

instance Prelude.Hashable GetFunction where
  hashWithSalt _salt GetFunction' {..} =
    _salt
      `Prelude.hashWithSalt` qualifier
      `Prelude.hashWithSalt` functionName

instance Prelude.NFData GetFunction where
  rnf GetFunction' {..} =
    Prelude.rnf qualifier
      `Prelude.seq` Prelude.rnf functionName

instance Data.ToHeaders GetFunction where
  toHeaders = Prelude.const Prelude.mempty

instance Data.ToPath GetFunction where
  toPath GetFunction' {..} =
    Prelude.mconcat
      ["/2015-03-31/functions/", Data.toBS functionName]

instance Data.ToQuery GetFunction where
  toQuery GetFunction' {..} =
    Prelude.mconcat ["Qualifier" Data.=: qualifier]

-- | /See:/ 'newGetFunctionResponse' smart constructor.
data GetFunctionResponse = GetFunctionResponse'
  { -- | The deployment package of the function or version.
    code :: Prelude.Maybe FunctionCodeLocation,
    -- | The function\'s
    -- <https://docs.aws.amazon.com/lambda/latest/dg/concurrent-executions.html reserved concurrency>.
    concurrency :: Prelude.Maybe Concurrency,
    -- | The configuration of the function or version.
    configuration :: Prelude.Maybe FunctionConfiguration,
    -- | The function\'s
    -- <https://docs.aws.amazon.com/lambda/latest/dg/tagging.html tags>.
    tags :: Prelude.Maybe (Prelude.HashMap Prelude.Text Prelude.Text),
    -- | The response's http status code.
    httpStatus :: Prelude.Int
  }
  deriving (Prelude.Eq, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'GetFunctionResponse' 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:
--
-- 'code', 'getFunctionResponse_code' - The deployment package of the function or version.
--
-- 'concurrency', 'getFunctionResponse_concurrency' - The function\'s
-- <https://docs.aws.amazon.com/lambda/latest/dg/concurrent-executions.html reserved concurrency>.
--
-- 'configuration', 'getFunctionResponse_configuration' - The configuration of the function or version.
--
-- 'tags', 'getFunctionResponse_tags' - The function\'s
-- <https://docs.aws.amazon.com/lambda/latest/dg/tagging.html tags>.
--
-- 'httpStatus', 'getFunctionResponse_httpStatus' - The response's http status code.
newGetFunctionResponse ::
  -- | 'httpStatus'
  Prelude.Int ->
  GetFunctionResponse
newGetFunctionResponse pHttpStatus_ =
  GetFunctionResponse'
    { code = Prelude.Nothing,
      concurrency = Prelude.Nothing,
      configuration = Prelude.Nothing,
      tags = Prelude.Nothing,
      httpStatus = pHttpStatus_
    }

-- | The deployment package of the function or version.
getFunctionResponse_code :: Lens.Lens' GetFunctionResponse (Prelude.Maybe FunctionCodeLocation)
getFunctionResponse_code = Lens.lens (\GetFunctionResponse' {code} -> code) (\s@GetFunctionResponse' {} a -> s {code = a} :: GetFunctionResponse)

-- | The function\'s
-- <https://docs.aws.amazon.com/lambda/latest/dg/concurrent-executions.html reserved concurrency>.
getFunctionResponse_concurrency :: Lens.Lens' GetFunctionResponse (Prelude.Maybe Concurrency)
getFunctionResponse_concurrency = Lens.lens (\GetFunctionResponse' {concurrency} -> concurrency) (\s@GetFunctionResponse' {} a -> s {concurrency = a} :: GetFunctionResponse)

-- | The configuration of the function or version.
getFunctionResponse_configuration :: Lens.Lens' GetFunctionResponse (Prelude.Maybe FunctionConfiguration)
getFunctionResponse_configuration = Lens.lens (\GetFunctionResponse' {configuration} -> configuration) (\s@GetFunctionResponse' {} a -> s {configuration = a} :: GetFunctionResponse)

-- | The function\'s
-- <https://docs.aws.amazon.com/lambda/latest/dg/tagging.html tags>.
getFunctionResponse_tags :: Lens.Lens' GetFunctionResponse (Prelude.Maybe (Prelude.HashMap Prelude.Text Prelude.Text))
getFunctionResponse_tags = Lens.lens (\GetFunctionResponse' {tags} -> tags) (\s@GetFunctionResponse' {} a -> s {tags = a} :: GetFunctionResponse) Prelude.. Lens.mapping Lens.coerced

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

instance Prelude.NFData GetFunctionResponse where
  rnf GetFunctionResponse' {..} =
    Prelude.rnf code
      `Prelude.seq` Prelude.rnf concurrency
      `Prelude.seq` Prelude.rnf configuration
      `Prelude.seq` Prelude.rnf tags
      `Prelude.seq` Prelude.rnf httpStatus