{-# 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.EFS.DescribeMountTargets
-- 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 the descriptions of all the current mount targets, or a specific
-- mount target, for a file system. When requesting all of the current
-- mount targets, the order of mount targets returned in the response is
-- unspecified.
--
-- This operation requires permissions for the
-- @elasticfilesystem:DescribeMountTargets@ action, on either the file
-- system ID that you specify in @FileSystemId@, or on the file system of
-- the mount target that you specify in @MountTargetId@.
--
-- This operation returns paginated results.
module Amazonka.EFS.DescribeMountTargets
  ( -- * Creating a Request
    DescribeMountTargets (..),
    newDescribeMountTargets,

    -- * Request Lenses
    describeMountTargets_accessPointId,
    describeMountTargets_fileSystemId,
    describeMountTargets_marker,
    describeMountTargets_maxItems,
    describeMountTargets_mountTargetId,

    -- * Destructuring the Response
    DescribeMountTargetsResponse (..),
    newDescribeMountTargetsResponse,

    -- * Response Lenses
    describeMountTargetsResponse_marker,
    describeMountTargetsResponse_mountTargets,
    describeMountTargetsResponse_nextMarker,
    describeMountTargetsResponse_httpStatus,
  )
where

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

-- |
--
-- /See:/ 'newDescribeMountTargets' smart constructor.
data DescribeMountTargets = DescribeMountTargets'
  { -- | (Optional) The ID of the access point whose mount targets that you want
    -- to list. It must be included in your request if a @FileSystemId@ or
    -- @MountTargetId@ is not included in your request. Accepts either an
    -- access point ID or ARN as input.
    accessPointId :: Prelude.Maybe Prelude.Text,
    -- | (Optional) ID of the file system whose mount targets you want to list
    -- (String). It must be included in your request if an @AccessPointId@ or
    -- @MountTargetId@ is not included. Accepts either a file system ID or ARN
    -- as input.
    fileSystemId :: Prelude.Maybe Prelude.Text,
    -- | (Optional) Opaque pagination token returned from a previous
    -- @DescribeMountTargets@ operation (String). If present, it specifies to
    -- continue the list from where the previous returning call left off.
    marker :: Prelude.Maybe Prelude.Text,
    -- | (Optional) Maximum number of mount targets to return in the response.
    -- Currently, this number is automatically set to 10, and other values are
    -- ignored. The response is paginated at 100 per page if you have more than
    -- 100 mount targets.
    maxItems :: Prelude.Maybe Prelude.Natural,
    -- | (Optional) ID of the mount target that you want to have described
    -- (String). It must be included in your request if @FileSystemId@ is not
    -- included. Accepts either a mount target ID or ARN as input.
    mountTargetId :: Prelude.Maybe Prelude.Text
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'DescribeMountTargets' 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:
--
-- 'accessPointId', 'describeMountTargets_accessPointId' - (Optional) The ID of the access point whose mount targets that you want
-- to list. It must be included in your request if a @FileSystemId@ or
-- @MountTargetId@ is not included in your request. Accepts either an
-- access point ID or ARN as input.
--
-- 'fileSystemId', 'describeMountTargets_fileSystemId' - (Optional) ID of the file system whose mount targets you want to list
-- (String). It must be included in your request if an @AccessPointId@ or
-- @MountTargetId@ is not included. Accepts either a file system ID or ARN
-- as input.
--
-- 'marker', 'describeMountTargets_marker' - (Optional) Opaque pagination token returned from a previous
-- @DescribeMountTargets@ operation (String). If present, it specifies to
-- continue the list from where the previous returning call left off.
--
-- 'maxItems', 'describeMountTargets_maxItems' - (Optional) Maximum number of mount targets to return in the response.
-- Currently, this number is automatically set to 10, and other values are
-- ignored. The response is paginated at 100 per page if you have more than
-- 100 mount targets.
--
-- 'mountTargetId', 'describeMountTargets_mountTargetId' - (Optional) ID of the mount target that you want to have described
-- (String). It must be included in your request if @FileSystemId@ is not
-- included. Accepts either a mount target ID or ARN as input.
newDescribeMountTargets ::
  DescribeMountTargets
newDescribeMountTargets =
  DescribeMountTargets'
    { accessPointId =
        Prelude.Nothing,
      fileSystemId = Prelude.Nothing,
      marker = Prelude.Nothing,
      maxItems = Prelude.Nothing,
      mountTargetId = Prelude.Nothing
    }

-- | (Optional) The ID of the access point whose mount targets that you want
-- to list. It must be included in your request if a @FileSystemId@ or
-- @MountTargetId@ is not included in your request. Accepts either an
-- access point ID or ARN as input.
describeMountTargets_accessPointId :: Lens.Lens' DescribeMountTargets (Prelude.Maybe Prelude.Text)
describeMountTargets_accessPointId = Lens.lens (\DescribeMountTargets' {accessPointId} -> accessPointId) (\s@DescribeMountTargets' {} a -> s {accessPointId = a} :: DescribeMountTargets)

-- | (Optional) ID of the file system whose mount targets you want to list
-- (String). It must be included in your request if an @AccessPointId@ or
-- @MountTargetId@ is not included. Accepts either a file system ID or ARN
-- as input.
describeMountTargets_fileSystemId :: Lens.Lens' DescribeMountTargets (Prelude.Maybe Prelude.Text)
describeMountTargets_fileSystemId = Lens.lens (\DescribeMountTargets' {fileSystemId} -> fileSystemId) (\s@DescribeMountTargets' {} a -> s {fileSystemId = a} :: DescribeMountTargets)

-- | (Optional) Opaque pagination token returned from a previous
-- @DescribeMountTargets@ operation (String). If present, it specifies to
-- continue the list from where the previous returning call left off.
describeMountTargets_marker :: Lens.Lens' DescribeMountTargets (Prelude.Maybe Prelude.Text)
describeMountTargets_marker = Lens.lens (\DescribeMountTargets' {marker} -> marker) (\s@DescribeMountTargets' {} a -> s {marker = a} :: DescribeMountTargets)

-- | (Optional) Maximum number of mount targets to return in the response.
-- Currently, this number is automatically set to 10, and other values are
-- ignored. The response is paginated at 100 per page if you have more than
-- 100 mount targets.
describeMountTargets_maxItems :: Lens.Lens' DescribeMountTargets (Prelude.Maybe Prelude.Natural)
describeMountTargets_maxItems = Lens.lens (\DescribeMountTargets' {maxItems} -> maxItems) (\s@DescribeMountTargets' {} a -> s {maxItems = a} :: DescribeMountTargets)

-- | (Optional) ID of the mount target that you want to have described
-- (String). It must be included in your request if @FileSystemId@ is not
-- included. Accepts either a mount target ID or ARN as input.
describeMountTargets_mountTargetId :: Lens.Lens' DescribeMountTargets (Prelude.Maybe Prelude.Text)
describeMountTargets_mountTargetId = Lens.lens (\DescribeMountTargets' {mountTargetId} -> mountTargetId) (\s@DescribeMountTargets' {} a -> s {mountTargetId = a} :: DescribeMountTargets)

instance Core.AWSPager DescribeMountTargets where
  page rq rs
    | Core.stop
        ( rs
            Lens.^? describeMountTargetsResponse_nextMarker
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Core.stop
        ( rs
            Lens.^? describeMountTargetsResponse_mountTargets
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Prelude.otherwise =
        Prelude.Just
          Prelude.$ rq
          Prelude.& describeMountTargets_marker
          Lens..~ rs
          Lens.^? describeMountTargetsResponse_nextMarker
          Prelude.. Lens._Just

instance Core.AWSRequest DescribeMountTargets where
  type
    AWSResponse DescribeMountTargets =
      DescribeMountTargetsResponse
  request overrides =
    Request.get (overrides defaultService)
  response =
    Response.receiveJSON
      ( \s h x ->
          DescribeMountTargetsResponse'
            Prelude.<$> (x Data..?> "Marker")
            Prelude.<*> (x Data..?> "MountTargets" Core..!@ Prelude.mempty)
            Prelude.<*> (x Data..?> "NextMarker")
            Prelude.<*> (Prelude.pure (Prelude.fromEnum s))
      )

instance Prelude.Hashable DescribeMountTargets where
  hashWithSalt _salt DescribeMountTargets' {..} =
    _salt
      `Prelude.hashWithSalt` accessPointId
      `Prelude.hashWithSalt` fileSystemId
      `Prelude.hashWithSalt` marker
      `Prelude.hashWithSalt` maxItems
      `Prelude.hashWithSalt` mountTargetId

instance Prelude.NFData DescribeMountTargets where
  rnf DescribeMountTargets' {..} =
    Prelude.rnf accessPointId
      `Prelude.seq` Prelude.rnf fileSystemId
      `Prelude.seq` Prelude.rnf marker
      `Prelude.seq` Prelude.rnf maxItems
      `Prelude.seq` Prelude.rnf mountTargetId

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

instance Data.ToPath DescribeMountTargets where
  toPath = Prelude.const "/2015-02-01/mount-targets"

instance Data.ToQuery DescribeMountTargets where
  toQuery DescribeMountTargets' {..} =
    Prelude.mconcat
      [ "AccessPointId" Data.=: accessPointId,
        "FileSystemId" Data.=: fileSystemId,
        "Marker" Data.=: marker,
        "MaxItems" Data.=: maxItems,
        "MountTargetId" Data.=: mountTargetId
      ]

-- |
--
-- /See:/ 'newDescribeMountTargetsResponse' smart constructor.
data DescribeMountTargetsResponse = DescribeMountTargetsResponse'
  { -- | If the request included the @Marker@, the response returns that value in
    -- this field.
    marker :: Prelude.Maybe Prelude.Text,
    -- | Returns the file system\'s mount targets as an array of
    -- @MountTargetDescription@ objects.
    mountTargets :: Prelude.Maybe [MountTargetDescription],
    -- | If a value is present, there are more mount targets to return. In a
    -- subsequent request, you can provide @Marker@ in your request with this
    -- value to retrieve the next set of mount targets.
    nextMarker :: 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 'DescribeMountTargetsResponse' 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:
--
-- 'marker', 'describeMountTargetsResponse_marker' - If the request included the @Marker@, the response returns that value in
-- this field.
--
-- 'mountTargets', 'describeMountTargetsResponse_mountTargets' - Returns the file system\'s mount targets as an array of
-- @MountTargetDescription@ objects.
--
-- 'nextMarker', 'describeMountTargetsResponse_nextMarker' - If a value is present, there are more mount targets to return. In a
-- subsequent request, you can provide @Marker@ in your request with this
-- value to retrieve the next set of mount targets.
--
-- 'httpStatus', 'describeMountTargetsResponse_httpStatus' - The response's http status code.
newDescribeMountTargetsResponse ::
  -- | 'httpStatus'
  Prelude.Int ->
  DescribeMountTargetsResponse
newDescribeMountTargetsResponse pHttpStatus_ =
  DescribeMountTargetsResponse'
    { marker =
        Prelude.Nothing,
      mountTargets = Prelude.Nothing,
      nextMarker = Prelude.Nothing,
      httpStatus = pHttpStatus_
    }

-- | If the request included the @Marker@, the response returns that value in
-- this field.
describeMountTargetsResponse_marker :: Lens.Lens' DescribeMountTargetsResponse (Prelude.Maybe Prelude.Text)
describeMountTargetsResponse_marker = Lens.lens (\DescribeMountTargetsResponse' {marker} -> marker) (\s@DescribeMountTargetsResponse' {} a -> s {marker = a} :: DescribeMountTargetsResponse)

-- | Returns the file system\'s mount targets as an array of
-- @MountTargetDescription@ objects.
describeMountTargetsResponse_mountTargets :: Lens.Lens' DescribeMountTargetsResponse (Prelude.Maybe [MountTargetDescription])
describeMountTargetsResponse_mountTargets = Lens.lens (\DescribeMountTargetsResponse' {mountTargets} -> mountTargets) (\s@DescribeMountTargetsResponse' {} a -> s {mountTargets = a} :: DescribeMountTargetsResponse) Prelude.. Lens.mapping Lens.coerced

-- | If a value is present, there are more mount targets to return. In a
-- subsequent request, you can provide @Marker@ in your request with this
-- value to retrieve the next set of mount targets.
describeMountTargetsResponse_nextMarker :: Lens.Lens' DescribeMountTargetsResponse (Prelude.Maybe Prelude.Text)
describeMountTargetsResponse_nextMarker = Lens.lens (\DescribeMountTargetsResponse' {nextMarker} -> nextMarker) (\s@DescribeMountTargetsResponse' {} a -> s {nextMarker = a} :: DescribeMountTargetsResponse)

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

instance Prelude.NFData DescribeMountTargetsResponse where
  rnf DescribeMountTargetsResponse' {..} =
    Prelude.rnf marker
      `Prelude.seq` Prelude.rnf mountTargets
      `Prelude.seq` Prelude.rnf nextMarker
      `Prelude.seq` Prelude.rnf httpStatus