{-# 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.EC2.GetConsoleOutput
-- Copyright   : (c) 2013-2023 Brendan Hay
-- License     : Mozilla Public License, v. 2.0.
-- Maintainer  : Brendan Hay
-- Stability   : auto-generated
-- Portability : non-portable (GHC extensions)
--
-- Gets the console output for the specified instance. For Linux instances,
-- the instance console output displays the exact console output that would
-- normally be displayed on a physical monitor attached to a computer. For
-- Windows instances, the instance console output includes the last three
-- system event log errors.
--
-- By default, the console output returns buffered information that was
-- posted shortly after an instance transition state (start, stop, reboot,
-- or terminate). This information is available for at least one hour after
-- the most recent post. Only the most recent 64 KB of console output is
-- available.
--
-- You can optionally retrieve the latest serial console output at any time
-- during the instance lifecycle. This option is supported on instance
-- types that use the Nitro hypervisor.
--
-- For more information, see
-- <https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/instance-console.html#instance-console-console-output Instance console output>
-- in the /Amazon EC2 User Guide/.
module Amazonka.EC2.GetConsoleOutput
  ( -- * Creating a Request
    GetConsoleOutput (..),
    newGetConsoleOutput,

    -- * Request Lenses
    getConsoleOutput_dryRun,
    getConsoleOutput_latest,
    getConsoleOutput_instanceId,

    -- * Destructuring the Response
    GetConsoleOutputResponse (..),
    newGetConsoleOutputResponse,

    -- * Response Lenses
    getConsoleOutputResponse_instanceId,
    getConsoleOutputResponse_output,
    getConsoleOutputResponse_timestamp,
    getConsoleOutputResponse_httpStatus,
  )
where

import qualified Amazonka.Core as Core
import qualified Amazonka.Core.Lens.Internal as Lens
import qualified Amazonka.Data as Data
import Amazonka.EC2.Types
import qualified Amazonka.Prelude as Prelude
import qualified Amazonka.Request as Request
import qualified Amazonka.Response as Response

-- | /See:/ 'newGetConsoleOutput' smart constructor.
data GetConsoleOutput = GetConsoleOutput'
  { -- | Checks whether you have the required permissions for the action, without
    -- actually making the request, and provides an error response. If you have
    -- the required permissions, the error response is @DryRunOperation@.
    -- Otherwise, it is @UnauthorizedOperation@.
    dryRun :: Prelude.Maybe Prelude.Bool,
    -- | When enabled, retrieves the latest console output for the instance.
    --
    -- Default: disabled (@false@)
    latest :: Prelude.Maybe Prelude.Bool,
    -- | The ID of the instance.
    instanceId :: Prelude.Text
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'GetConsoleOutput' 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:
--
-- 'dryRun', 'getConsoleOutput_dryRun' - Checks whether you have the required permissions for the action, without
-- actually making the request, and provides an error response. If you have
-- the required permissions, the error response is @DryRunOperation@.
-- Otherwise, it is @UnauthorizedOperation@.
--
-- 'latest', 'getConsoleOutput_latest' - When enabled, retrieves the latest console output for the instance.
--
-- Default: disabled (@false@)
--
-- 'instanceId', 'getConsoleOutput_instanceId' - The ID of the instance.
newGetConsoleOutput ::
  -- | 'instanceId'
  Prelude.Text ->
  GetConsoleOutput
newGetConsoleOutput pInstanceId_ =
  GetConsoleOutput'
    { dryRun = Prelude.Nothing,
      latest = Prelude.Nothing,
      instanceId = pInstanceId_
    }

-- | Checks whether you have the required permissions for the action, without
-- actually making the request, and provides an error response. If you have
-- the required permissions, the error response is @DryRunOperation@.
-- Otherwise, it is @UnauthorizedOperation@.
getConsoleOutput_dryRun :: Lens.Lens' GetConsoleOutput (Prelude.Maybe Prelude.Bool)
getConsoleOutput_dryRun = Lens.lens (\GetConsoleOutput' {dryRun} -> dryRun) (\s@GetConsoleOutput' {} a -> s {dryRun = a} :: GetConsoleOutput)

-- | When enabled, retrieves the latest console output for the instance.
--
-- Default: disabled (@false@)
getConsoleOutput_latest :: Lens.Lens' GetConsoleOutput (Prelude.Maybe Prelude.Bool)
getConsoleOutput_latest = Lens.lens (\GetConsoleOutput' {latest} -> latest) (\s@GetConsoleOutput' {} a -> s {latest = a} :: GetConsoleOutput)

-- | The ID of the instance.
getConsoleOutput_instanceId :: Lens.Lens' GetConsoleOutput Prelude.Text
getConsoleOutput_instanceId = Lens.lens (\GetConsoleOutput' {instanceId} -> instanceId) (\s@GetConsoleOutput' {} a -> s {instanceId = a} :: GetConsoleOutput)

instance Core.AWSRequest GetConsoleOutput where
  type
    AWSResponse GetConsoleOutput =
      GetConsoleOutputResponse
  request overrides =
    Request.postQuery (overrides defaultService)
  response =
    Response.receiveXML
      ( \s h x ->
          GetConsoleOutputResponse'
            Prelude.<$> (x Data..@? "instanceId")
            Prelude.<*> (x Data..@? "output")
            Prelude.<*> (x Data..@? "timestamp")
            Prelude.<*> (Prelude.pure (Prelude.fromEnum s))
      )

instance Prelude.Hashable GetConsoleOutput where
  hashWithSalt _salt GetConsoleOutput' {..} =
    _salt
      `Prelude.hashWithSalt` dryRun
      `Prelude.hashWithSalt` latest
      `Prelude.hashWithSalt` instanceId

instance Prelude.NFData GetConsoleOutput where
  rnf GetConsoleOutput' {..} =
    Prelude.rnf dryRun
      `Prelude.seq` Prelude.rnf latest
      `Prelude.seq` Prelude.rnf instanceId

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

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

instance Data.ToQuery GetConsoleOutput where
  toQuery GetConsoleOutput' {..} =
    Prelude.mconcat
      [ "Action"
          Data.=: ("GetConsoleOutput" :: Prelude.ByteString),
        "Version"
          Data.=: ("2016-11-15" :: Prelude.ByteString),
        "DryRun" Data.=: dryRun,
        "Latest" Data.=: latest,
        "InstanceId" Data.=: instanceId
      ]

-- | /See:/ 'newGetConsoleOutputResponse' smart constructor.
data GetConsoleOutputResponse = GetConsoleOutputResponse'
  { -- | The ID of the instance.
    instanceId :: Prelude.Maybe Prelude.Text,
    -- | The console output, base64-encoded. If you are using a command line
    -- tool, the tool decodes the output for you.
    output :: Prelude.Maybe Prelude.Text,
    -- | The time at which the output was last updated.
    timestamp :: Prelude.Maybe Data.ISO8601,
    -- | The response's http status code.
    httpStatus :: Prelude.Int
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'GetConsoleOutputResponse' 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:
--
-- 'instanceId', 'getConsoleOutputResponse_instanceId' - The ID of the instance.
--
-- 'output', 'getConsoleOutputResponse_output' - The console output, base64-encoded. If you are using a command line
-- tool, the tool decodes the output for you.
--
-- 'timestamp', 'getConsoleOutputResponse_timestamp' - The time at which the output was last updated.
--
-- 'httpStatus', 'getConsoleOutputResponse_httpStatus' - The response's http status code.
newGetConsoleOutputResponse ::
  -- | 'httpStatus'
  Prelude.Int ->
  GetConsoleOutputResponse
newGetConsoleOutputResponse pHttpStatus_ =
  GetConsoleOutputResponse'
    { instanceId =
        Prelude.Nothing,
      output = Prelude.Nothing,
      timestamp = Prelude.Nothing,
      httpStatus = pHttpStatus_
    }

-- | The ID of the instance.
getConsoleOutputResponse_instanceId :: Lens.Lens' GetConsoleOutputResponse (Prelude.Maybe Prelude.Text)
getConsoleOutputResponse_instanceId = Lens.lens (\GetConsoleOutputResponse' {instanceId} -> instanceId) (\s@GetConsoleOutputResponse' {} a -> s {instanceId = a} :: GetConsoleOutputResponse)

-- | The console output, base64-encoded. If you are using a command line
-- tool, the tool decodes the output for you.
getConsoleOutputResponse_output :: Lens.Lens' GetConsoleOutputResponse (Prelude.Maybe Prelude.Text)
getConsoleOutputResponse_output = Lens.lens (\GetConsoleOutputResponse' {output} -> output) (\s@GetConsoleOutputResponse' {} a -> s {output = a} :: GetConsoleOutputResponse)

-- | The time at which the output was last updated.
getConsoleOutputResponse_timestamp :: Lens.Lens' GetConsoleOutputResponse (Prelude.Maybe Prelude.UTCTime)
getConsoleOutputResponse_timestamp = Lens.lens (\GetConsoleOutputResponse' {timestamp} -> timestamp) (\s@GetConsoleOutputResponse' {} a -> s {timestamp = a} :: GetConsoleOutputResponse) Prelude.. Lens.mapping Data._Time

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

instance Prelude.NFData GetConsoleOutputResponse where
  rnf GetConsoleOutputResponse' {..} =
    Prelude.rnf instanceId
      `Prelude.seq` Prelude.rnf output
      `Prelude.seq` Prelude.rnf timestamp
      `Prelude.seq` Prelude.rnf httpStatus