{-# 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.ECR.GetDownloadUrlForLayer
-- 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 the pre-signed Amazon S3 download URL corresponding to an
-- image layer. You can only get URLs for image layers that are referenced
-- in an image.
--
-- When an image is pulled, the GetDownloadUrlForLayer API is called once
-- per image layer that is not already cached.
--
-- This operation is used by the Amazon ECR proxy and is not generally used
-- by customers for pulling and pushing images. In most cases, you should
-- use the @docker@ CLI to pull, tag, and push images.
module Amazonka.ECR.GetDownloadUrlForLayer
  ( -- * Creating a Request
    GetDownloadUrlForLayer (..),
    newGetDownloadUrlForLayer,

    -- * Request Lenses
    getDownloadUrlForLayer_registryId,
    getDownloadUrlForLayer_repositoryName,
    getDownloadUrlForLayer_layerDigest,

    -- * Destructuring the Response
    GetDownloadUrlForLayerResponse (..),
    newGetDownloadUrlForLayerResponse,

    -- * Response Lenses
    getDownloadUrlForLayerResponse_downloadUrl,
    getDownloadUrlForLayerResponse_layerDigest,
    getDownloadUrlForLayerResponse_httpStatus,
  )
where

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

-- | /See:/ 'newGetDownloadUrlForLayer' smart constructor.
data GetDownloadUrlForLayer = GetDownloadUrlForLayer'
  { -- | The Amazon Web Services account ID associated with the registry that
    -- contains the image layer to download. If you do not specify a registry,
    -- the default registry is assumed.
    registryId :: Prelude.Maybe Prelude.Text,
    -- | The name of the repository that is associated with the image layer to
    -- download.
    repositoryName :: Prelude.Text,
    -- | The digest of the image layer to download.
    layerDigest :: Prelude.Text
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'GetDownloadUrlForLayer' 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:
--
-- 'registryId', 'getDownloadUrlForLayer_registryId' - The Amazon Web Services account ID associated with the registry that
-- contains the image layer to download. If you do not specify a registry,
-- the default registry is assumed.
--
-- 'repositoryName', 'getDownloadUrlForLayer_repositoryName' - The name of the repository that is associated with the image layer to
-- download.
--
-- 'layerDigest', 'getDownloadUrlForLayer_layerDigest' - The digest of the image layer to download.
newGetDownloadUrlForLayer ::
  -- | 'repositoryName'
  Prelude.Text ->
  -- | 'layerDigest'
  Prelude.Text ->
  GetDownloadUrlForLayer
newGetDownloadUrlForLayer
  pRepositoryName_
  pLayerDigest_ =
    GetDownloadUrlForLayer'
      { registryId =
          Prelude.Nothing,
        repositoryName = pRepositoryName_,
        layerDigest = pLayerDigest_
      }

-- | The Amazon Web Services account ID associated with the registry that
-- contains the image layer to download. If you do not specify a registry,
-- the default registry is assumed.
getDownloadUrlForLayer_registryId :: Lens.Lens' GetDownloadUrlForLayer (Prelude.Maybe Prelude.Text)
getDownloadUrlForLayer_registryId = Lens.lens (\GetDownloadUrlForLayer' {registryId} -> registryId) (\s@GetDownloadUrlForLayer' {} a -> s {registryId = a} :: GetDownloadUrlForLayer)

-- | The name of the repository that is associated with the image layer to
-- download.
getDownloadUrlForLayer_repositoryName :: Lens.Lens' GetDownloadUrlForLayer Prelude.Text
getDownloadUrlForLayer_repositoryName = Lens.lens (\GetDownloadUrlForLayer' {repositoryName} -> repositoryName) (\s@GetDownloadUrlForLayer' {} a -> s {repositoryName = a} :: GetDownloadUrlForLayer)

-- | The digest of the image layer to download.
getDownloadUrlForLayer_layerDigest :: Lens.Lens' GetDownloadUrlForLayer Prelude.Text
getDownloadUrlForLayer_layerDigest = Lens.lens (\GetDownloadUrlForLayer' {layerDigest} -> layerDigest) (\s@GetDownloadUrlForLayer' {} a -> s {layerDigest = a} :: GetDownloadUrlForLayer)

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

instance Prelude.Hashable GetDownloadUrlForLayer where
  hashWithSalt _salt GetDownloadUrlForLayer' {..} =
    _salt
      `Prelude.hashWithSalt` registryId
      `Prelude.hashWithSalt` repositoryName
      `Prelude.hashWithSalt` layerDigest

instance Prelude.NFData GetDownloadUrlForLayer where
  rnf GetDownloadUrlForLayer' {..} =
    Prelude.rnf registryId
      `Prelude.seq` Prelude.rnf repositoryName
      `Prelude.seq` Prelude.rnf layerDigest

instance Data.ToHeaders GetDownloadUrlForLayer where
  toHeaders =
    Prelude.const
      ( Prelude.mconcat
          [ "X-Amz-Target"
              Data.=# ( "AmazonEC2ContainerRegistry_V20150921.GetDownloadUrlForLayer" ::
                          Prelude.ByteString
                      ),
            "Content-Type"
              Data.=# ( "application/x-amz-json-1.1" ::
                          Prelude.ByteString
                      )
          ]
      )

instance Data.ToJSON GetDownloadUrlForLayer where
  toJSON GetDownloadUrlForLayer' {..} =
    Data.object
      ( Prelude.catMaybes
          [ ("registryId" Data..=) Prelude.<$> registryId,
            Prelude.Just
              ("repositoryName" Data..= repositoryName),
            Prelude.Just ("layerDigest" Data..= layerDigest)
          ]
      )

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

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

-- | /See:/ 'newGetDownloadUrlForLayerResponse' smart constructor.
data GetDownloadUrlForLayerResponse = GetDownloadUrlForLayerResponse'
  { -- | The pre-signed Amazon S3 download URL for the requested layer.
    downloadUrl :: Prelude.Maybe Prelude.Text,
    -- | The digest of the image layer to download.
    layerDigest :: Prelude.Maybe Prelude.Text,
    -- | The response's http status code.
    httpStatus :: Prelude.Int
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'GetDownloadUrlForLayerResponse' 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:
--
-- 'downloadUrl', 'getDownloadUrlForLayerResponse_downloadUrl' - The pre-signed Amazon S3 download URL for the requested layer.
--
-- 'layerDigest', 'getDownloadUrlForLayerResponse_layerDigest' - The digest of the image layer to download.
--
-- 'httpStatus', 'getDownloadUrlForLayerResponse_httpStatus' - The response's http status code.
newGetDownloadUrlForLayerResponse ::
  -- | 'httpStatus'
  Prelude.Int ->
  GetDownloadUrlForLayerResponse
newGetDownloadUrlForLayerResponse pHttpStatus_ =
  GetDownloadUrlForLayerResponse'
    { downloadUrl =
        Prelude.Nothing,
      layerDigest = Prelude.Nothing,
      httpStatus = pHttpStatus_
    }

-- | The pre-signed Amazon S3 download URL for the requested layer.
getDownloadUrlForLayerResponse_downloadUrl :: Lens.Lens' GetDownloadUrlForLayerResponse (Prelude.Maybe Prelude.Text)
getDownloadUrlForLayerResponse_downloadUrl = Lens.lens (\GetDownloadUrlForLayerResponse' {downloadUrl} -> downloadUrl) (\s@GetDownloadUrlForLayerResponse' {} a -> s {downloadUrl = a} :: GetDownloadUrlForLayerResponse)

-- | The digest of the image layer to download.
getDownloadUrlForLayerResponse_layerDigest :: Lens.Lens' GetDownloadUrlForLayerResponse (Prelude.Maybe Prelude.Text)
getDownloadUrlForLayerResponse_layerDigest = Lens.lens (\GetDownloadUrlForLayerResponse' {layerDigest} -> layerDigest) (\s@GetDownloadUrlForLayerResponse' {} a -> s {layerDigest = a} :: GetDownloadUrlForLayerResponse)

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

instance
  Prelude.NFData
    GetDownloadUrlForLayerResponse
  where
  rnf GetDownloadUrlForLayerResponse' {..} =
    Prelude.rnf downloadUrl
      `Prelude.seq` Prelude.rnf layerDigest
      `Prelude.seq` Prelude.rnf httpStatus