{-# 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.Redshift.DescribeEvents
-- 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 events related to clusters, security groups, snapshots, and
-- parameter groups for the past 14 days. Events specific to a particular
-- cluster, security group, snapshot or parameter group can be obtained by
-- providing the name as a parameter. By default, the past hour of events
-- are returned.
--
-- This operation returns paginated results.
module Amazonka.Redshift.DescribeEvents
  ( -- * Creating a Request
    DescribeEvents (..),
    newDescribeEvents,

    -- * Request Lenses
    describeEvents_duration,
    describeEvents_endTime,
    describeEvents_marker,
    describeEvents_maxRecords,
    describeEvents_sourceIdentifier,
    describeEvents_sourceType,
    describeEvents_startTime,

    -- * Destructuring the Response
    DescribeEventsResponse (..),
    newDescribeEventsResponse,

    -- * Response Lenses
    describeEventsResponse_events,
    describeEventsResponse_marker,
    describeEventsResponse_httpStatus,
  )
where

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

-- |
--
-- /See:/ 'newDescribeEvents' smart constructor.
data DescribeEvents = DescribeEvents'
  { -- | The number of minutes prior to the time of the request for which to
    -- retrieve events. For example, if the request is sent at 18:00 and you
    -- specify a duration of 60, then only events which have occurred after
    -- 17:00 will be returned.
    --
    -- Default: @60@
    duration :: Prelude.Maybe Prelude.Int,
    -- | The end of the time interval for which to retrieve events, specified in
    -- ISO 8601 format. For more information about ISO 8601, go to the
    -- <http://en.wikipedia.org/wiki/ISO_8601 ISO8601 Wikipedia page.>
    --
    -- Example: @2009-07-08T18:00Z@
    endTime :: Prelude.Maybe Data.ISO8601,
    -- | An optional parameter that specifies the starting point to return a set
    -- of response records. When the results of a DescribeEvents request exceed
    -- the value specified in @MaxRecords@, Amazon Web Services returns a value
    -- in the @Marker@ field of the response. You can retrieve the next set of
    -- response records by providing the returned marker value in the @Marker@
    -- parameter and retrying the request.
    marker :: Prelude.Maybe Prelude.Text,
    -- | The maximum number of response records to return in each call. If the
    -- number of remaining response records exceeds the specified @MaxRecords@
    -- value, a value is returned in a @marker@ field of the response. You can
    -- retrieve the next set of records by retrying the command with the
    -- returned marker value.
    --
    -- Default: @100@
    --
    -- Constraints: minimum 20, maximum 100.
    maxRecords :: Prelude.Maybe Prelude.Int,
    -- | The identifier of the event source for which events will be returned. If
    -- this parameter is not specified, then all sources are included in the
    -- response.
    --
    -- Constraints:
    --
    -- If /SourceIdentifier/ is supplied, /SourceType/ must also be provided.
    --
    -- -   Specify a cluster identifier when /SourceType/ is @cluster@.
    --
    -- -   Specify a cluster security group name when /SourceType/ is
    --     @cluster-security-group@.
    --
    -- -   Specify a cluster parameter group name when /SourceType/ is
    --     @cluster-parameter-group@.
    --
    -- -   Specify a cluster snapshot identifier when /SourceType/ is
    --     @cluster-snapshot@.
    sourceIdentifier :: Prelude.Maybe Prelude.Text,
    -- | The event source to retrieve events for. If no value is specified, all
    -- events are returned.
    --
    -- Constraints:
    --
    -- If /SourceType/ is supplied, /SourceIdentifier/ must also be provided.
    --
    -- -   Specify @cluster@ when /SourceIdentifier/ is a cluster identifier.
    --
    -- -   Specify @cluster-security-group@ when /SourceIdentifier/ is a
    --     cluster security group name.
    --
    -- -   Specify @cluster-parameter-group@ when /SourceIdentifier/ is a
    --     cluster parameter group name.
    --
    -- -   Specify @cluster-snapshot@ when /SourceIdentifier/ is a cluster
    --     snapshot identifier.
    sourceType :: Prelude.Maybe SourceType,
    -- | The beginning of the time interval to retrieve events for, specified in
    -- ISO 8601 format. For more information about ISO 8601, go to the
    -- <http://en.wikipedia.org/wiki/ISO_8601 ISO8601 Wikipedia page.>
    --
    -- Example: @2009-07-08T18:00Z@
    startTime :: Prelude.Maybe Data.ISO8601
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'DescribeEvents' 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:
--
-- 'duration', 'describeEvents_duration' - The number of minutes prior to the time of the request for which to
-- retrieve events. For example, if the request is sent at 18:00 and you
-- specify a duration of 60, then only events which have occurred after
-- 17:00 will be returned.
--
-- Default: @60@
--
-- 'endTime', 'describeEvents_endTime' - The end of the time interval for which to retrieve events, specified in
-- ISO 8601 format. For more information about ISO 8601, go to the
-- <http://en.wikipedia.org/wiki/ISO_8601 ISO8601 Wikipedia page.>
--
-- Example: @2009-07-08T18:00Z@
--
-- 'marker', 'describeEvents_marker' - An optional parameter that specifies the starting point to return a set
-- of response records. When the results of a DescribeEvents request exceed
-- the value specified in @MaxRecords@, Amazon Web Services returns a value
-- in the @Marker@ field of the response. You can retrieve the next set of
-- response records by providing the returned marker value in the @Marker@
-- parameter and retrying the request.
--
-- 'maxRecords', 'describeEvents_maxRecords' - The maximum number of response records to return in each call. If the
-- number of remaining response records exceeds the specified @MaxRecords@
-- value, a value is returned in a @marker@ field of the response. You can
-- retrieve the next set of records by retrying the command with the
-- returned marker value.
--
-- Default: @100@
--
-- Constraints: minimum 20, maximum 100.
--
-- 'sourceIdentifier', 'describeEvents_sourceIdentifier' - The identifier of the event source for which events will be returned. If
-- this parameter is not specified, then all sources are included in the
-- response.
--
-- Constraints:
--
-- If /SourceIdentifier/ is supplied, /SourceType/ must also be provided.
--
-- -   Specify a cluster identifier when /SourceType/ is @cluster@.
--
-- -   Specify a cluster security group name when /SourceType/ is
--     @cluster-security-group@.
--
-- -   Specify a cluster parameter group name when /SourceType/ is
--     @cluster-parameter-group@.
--
-- -   Specify a cluster snapshot identifier when /SourceType/ is
--     @cluster-snapshot@.
--
-- 'sourceType', 'describeEvents_sourceType' - The event source to retrieve events for. If no value is specified, all
-- events are returned.
--
-- Constraints:
--
-- If /SourceType/ is supplied, /SourceIdentifier/ must also be provided.
--
-- -   Specify @cluster@ when /SourceIdentifier/ is a cluster identifier.
--
-- -   Specify @cluster-security-group@ when /SourceIdentifier/ is a
--     cluster security group name.
--
-- -   Specify @cluster-parameter-group@ when /SourceIdentifier/ is a
--     cluster parameter group name.
--
-- -   Specify @cluster-snapshot@ when /SourceIdentifier/ is a cluster
--     snapshot identifier.
--
-- 'startTime', 'describeEvents_startTime' - The beginning of the time interval to retrieve events for, specified in
-- ISO 8601 format. For more information about ISO 8601, go to the
-- <http://en.wikipedia.org/wiki/ISO_8601 ISO8601 Wikipedia page.>
--
-- Example: @2009-07-08T18:00Z@
newDescribeEvents ::
  DescribeEvents
newDescribeEvents =
  DescribeEvents'
    { duration = Prelude.Nothing,
      endTime = Prelude.Nothing,
      marker = Prelude.Nothing,
      maxRecords = Prelude.Nothing,
      sourceIdentifier = Prelude.Nothing,
      sourceType = Prelude.Nothing,
      startTime = Prelude.Nothing
    }

-- | The number of minutes prior to the time of the request for which to
-- retrieve events. For example, if the request is sent at 18:00 and you
-- specify a duration of 60, then only events which have occurred after
-- 17:00 will be returned.
--
-- Default: @60@
describeEvents_duration :: Lens.Lens' DescribeEvents (Prelude.Maybe Prelude.Int)
describeEvents_duration = Lens.lens (\DescribeEvents' {duration} -> duration) (\s@DescribeEvents' {} a -> s {duration = a} :: DescribeEvents)

-- | The end of the time interval for which to retrieve events, specified in
-- ISO 8601 format. For more information about ISO 8601, go to the
-- <http://en.wikipedia.org/wiki/ISO_8601 ISO8601 Wikipedia page.>
--
-- Example: @2009-07-08T18:00Z@
describeEvents_endTime :: Lens.Lens' DescribeEvents (Prelude.Maybe Prelude.UTCTime)
describeEvents_endTime = Lens.lens (\DescribeEvents' {endTime} -> endTime) (\s@DescribeEvents' {} a -> s {endTime = a} :: DescribeEvents) Prelude.. Lens.mapping Data._Time

-- | An optional parameter that specifies the starting point to return a set
-- of response records. When the results of a DescribeEvents request exceed
-- the value specified in @MaxRecords@, Amazon Web Services returns a value
-- in the @Marker@ field of the response. You can retrieve the next set of
-- response records by providing the returned marker value in the @Marker@
-- parameter and retrying the request.
describeEvents_marker :: Lens.Lens' DescribeEvents (Prelude.Maybe Prelude.Text)
describeEvents_marker = Lens.lens (\DescribeEvents' {marker} -> marker) (\s@DescribeEvents' {} a -> s {marker = a} :: DescribeEvents)

-- | The maximum number of response records to return in each call. If the
-- number of remaining response records exceeds the specified @MaxRecords@
-- value, a value is returned in a @marker@ field of the response. You can
-- retrieve the next set of records by retrying the command with the
-- returned marker value.
--
-- Default: @100@
--
-- Constraints: minimum 20, maximum 100.
describeEvents_maxRecords :: Lens.Lens' DescribeEvents (Prelude.Maybe Prelude.Int)
describeEvents_maxRecords = Lens.lens (\DescribeEvents' {maxRecords} -> maxRecords) (\s@DescribeEvents' {} a -> s {maxRecords = a} :: DescribeEvents)

-- | The identifier of the event source for which events will be returned. If
-- this parameter is not specified, then all sources are included in the
-- response.
--
-- Constraints:
--
-- If /SourceIdentifier/ is supplied, /SourceType/ must also be provided.
--
-- -   Specify a cluster identifier when /SourceType/ is @cluster@.
--
-- -   Specify a cluster security group name when /SourceType/ is
--     @cluster-security-group@.
--
-- -   Specify a cluster parameter group name when /SourceType/ is
--     @cluster-parameter-group@.
--
-- -   Specify a cluster snapshot identifier when /SourceType/ is
--     @cluster-snapshot@.
describeEvents_sourceIdentifier :: Lens.Lens' DescribeEvents (Prelude.Maybe Prelude.Text)
describeEvents_sourceIdentifier = Lens.lens (\DescribeEvents' {sourceIdentifier} -> sourceIdentifier) (\s@DescribeEvents' {} a -> s {sourceIdentifier = a} :: DescribeEvents)

-- | The event source to retrieve events for. If no value is specified, all
-- events are returned.
--
-- Constraints:
--
-- If /SourceType/ is supplied, /SourceIdentifier/ must also be provided.
--
-- -   Specify @cluster@ when /SourceIdentifier/ is a cluster identifier.
--
-- -   Specify @cluster-security-group@ when /SourceIdentifier/ is a
--     cluster security group name.
--
-- -   Specify @cluster-parameter-group@ when /SourceIdentifier/ is a
--     cluster parameter group name.
--
-- -   Specify @cluster-snapshot@ when /SourceIdentifier/ is a cluster
--     snapshot identifier.
describeEvents_sourceType :: Lens.Lens' DescribeEvents (Prelude.Maybe SourceType)
describeEvents_sourceType = Lens.lens (\DescribeEvents' {sourceType} -> sourceType) (\s@DescribeEvents' {} a -> s {sourceType = a} :: DescribeEvents)

-- | The beginning of the time interval to retrieve events for, specified in
-- ISO 8601 format. For more information about ISO 8601, go to the
-- <http://en.wikipedia.org/wiki/ISO_8601 ISO8601 Wikipedia page.>
--
-- Example: @2009-07-08T18:00Z@
describeEvents_startTime :: Lens.Lens' DescribeEvents (Prelude.Maybe Prelude.UTCTime)
describeEvents_startTime = Lens.lens (\DescribeEvents' {startTime} -> startTime) (\s@DescribeEvents' {} a -> s {startTime = a} :: DescribeEvents) Prelude.. Lens.mapping Data._Time

instance Core.AWSPager DescribeEvents where
  page rq rs
    | Core.stop
        ( rs
            Lens.^? describeEventsResponse_marker
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Core.stop
        ( rs
            Lens.^? describeEventsResponse_events
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Prelude.otherwise =
        Prelude.Just
          Prelude.$ rq
          Prelude.& describeEvents_marker
          Lens..~ rs
          Lens.^? describeEventsResponse_marker
          Prelude.. Lens._Just

instance Core.AWSRequest DescribeEvents where
  type
    AWSResponse DescribeEvents =
      DescribeEventsResponse
  request overrides =
    Request.postQuery (overrides defaultService)
  response =
    Response.receiveXMLWrapper
      "DescribeEventsResult"
      ( \s h x ->
          DescribeEventsResponse'
            Prelude.<$> ( x
                            Data..@? "Events"
                            Core..!@ Prelude.mempty
                            Prelude.>>= Core.may (Data.parseXMLList "Event")
                        )
            Prelude.<*> (x Data..@? "Marker")
            Prelude.<*> (Prelude.pure (Prelude.fromEnum s))
      )

instance Prelude.Hashable DescribeEvents where
  hashWithSalt _salt DescribeEvents' {..} =
    _salt
      `Prelude.hashWithSalt` duration
      `Prelude.hashWithSalt` endTime
      `Prelude.hashWithSalt` marker
      `Prelude.hashWithSalt` maxRecords
      `Prelude.hashWithSalt` sourceIdentifier
      `Prelude.hashWithSalt` sourceType
      `Prelude.hashWithSalt` startTime

instance Prelude.NFData DescribeEvents where
  rnf DescribeEvents' {..} =
    Prelude.rnf duration
      `Prelude.seq` Prelude.rnf endTime
      `Prelude.seq` Prelude.rnf marker
      `Prelude.seq` Prelude.rnf maxRecords
      `Prelude.seq` Prelude.rnf sourceIdentifier
      `Prelude.seq` Prelude.rnf sourceType
      `Prelude.seq` Prelude.rnf startTime

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

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

instance Data.ToQuery DescribeEvents where
  toQuery DescribeEvents' {..} =
    Prelude.mconcat
      [ "Action"
          Data.=: ("DescribeEvents" :: Prelude.ByteString),
        "Version"
          Data.=: ("2012-12-01" :: Prelude.ByteString),
        "Duration" Data.=: duration,
        "EndTime" Data.=: endTime,
        "Marker" Data.=: marker,
        "MaxRecords" Data.=: maxRecords,
        "SourceIdentifier" Data.=: sourceIdentifier,
        "SourceType" Data.=: sourceType,
        "StartTime" Data.=: startTime
      ]

-- |
--
-- /See:/ 'newDescribeEventsResponse' smart constructor.
data DescribeEventsResponse = DescribeEventsResponse'
  { -- | A list of @Event@ instances.
    events :: Prelude.Maybe [Event],
    -- | A value that indicates the starting point for the next set of response
    -- records in a subsequent request. If a value is returned in a response,
    -- you can retrieve the next set of records by providing this returned
    -- marker value in the @Marker@ parameter and retrying the command. If the
    -- @Marker@ field is empty, all response records have been retrieved for
    -- the request.
    marker :: 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 'DescribeEventsResponse' 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:
--
-- 'events', 'describeEventsResponse_events' - A list of @Event@ instances.
--
-- 'marker', 'describeEventsResponse_marker' - A value that indicates the starting point for the next set of response
-- records in a subsequent request. If a value is returned in a response,
-- you can retrieve the next set of records by providing this returned
-- marker value in the @Marker@ parameter and retrying the command. If the
-- @Marker@ field is empty, all response records have been retrieved for
-- the request.
--
-- 'httpStatus', 'describeEventsResponse_httpStatus' - The response's http status code.
newDescribeEventsResponse ::
  -- | 'httpStatus'
  Prelude.Int ->
  DescribeEventsResponse
newDescribeEventsResponse pHttpStatus_ =
  DescribeEventsResponse'
    { events = Prelude.Nothing,
      marker = Prelude.Nothing,
      httpStatus = pHttpStatus_
    }

-- | A list of @Event@ instances.
describeEventsResponse_events :: Lens.Lens' DescribeEventsResponse (Prelude.Maybe [Event])
describeEventsResponse_events = Lens.lens (\DescribeEventsResponse' {events} -> events) (\s@DescribeEventsResponse' {} a -> s {events = a} :: DescribeEventsResponse) Prelude.. Lens.mapping Lens.coerced

-- | A value that indicates the starting point for the next set of response
-- records in a subsequent request. If a value is returned in a response,
-- you can retrieve the next set of records by providing this returned
-- marker value in the @Marker@ parameter and retrying the command. If the
-- @Marker@ field is empty, all response records have been retrieved for
-- the request.
describeEventsResponse_marker :: Lens.Lens' DescribeEventsResponse (Prelude.Maybe Prelude.Text)
describeEventsResponse_marker = Lens.lens (\DescribeEventsResponse' {marker} -> marker) (\s@DescribeEventsResponse' {} a -> s {marker = a} :: DescribeEventsResponse)

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

instance Prelude.NFData DescribeEventsResponse where
  rnf DescribeEventsResponse' {..} =
    Prelude.rnf events
      `Prelude.seq` Prelude.rnf marker
      `Prelude.seq` Prelude.rnf httpStatus