{-# 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.Neptune.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 DB instances, DB security groups, DB
-- snapshots, and DB parameter groups for the past 14 days. Events specific
-- to a particular DB instance, DB security group, database snapshot, or DB
-- 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.Neptune.DescribeEvents
  ( -- * Creating a Request
    DescribeEvents (..),
    newDescribeEvents,

    -- * Request Lenses
    describeEvents_duration,
    describeEvents_endTime,
    describeEvents_eventCategories,
    describeEvents_filters,
    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 Amazonka.Neptune.Types
import qualified Amazonka.Prelude as Prelude
import qualified Amazonka.Request as Request
import qualified Amazonka.Response as Response

-- | /See:/ 'newDescribeEvents' smart constructor.
data DescribeEvents = DescribeEvents'
  { -- | The number of minutes to retrieve events for.
    --
    -- 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,
    -- | A list of event categories that trigger notifications for a event
    -- notification subscription.
    eventCategories :: Prelude.Maybe [Prelude.Text],
    -- | This parameter is not currently supported.
    filters :: Prelude.Maybe [Filter],
    -- | An optional pagination token provided by a previous DescribeEvents
    -- request. If this parameter is specified, the response includes only
    -- records beyond the marker, up to the value specified by @MaxRecords@.
    marker :: Prelude.Maybe Prelude.Text,
    -- | The maximum number of records to include in the response. If more
    -- records exist than the specified @MaxRecords@ value, a pagination token
    -- called a marker is included in the response so that the remaining
    -- results can be retrieved.
    --
    -- Default: 100
    --
    -- Constraints: Minimum 20, maximum 100.
    maxRecords :: Prelude.Maybe Prelude.Int,
    -- | The identifier of the event source for which events are returned. If not
    -- specified, then all sources are included in the response.
    --
    -- Constraints:
    --
    -- -   If SourceIdentifier is supplied, SourceType must also be provided.
    --
    -- -   If the source type is @DBInstance@, then a @DBInstanceIdentifier@
    --     must be supplied.
    --
    -- -   If the source type is @DBSecurityGroup@, a @DBSecurityGroupName@
    --     must be supplied.
    --
    -- -   If the source type is @DBParameterGroup@, a @DBParameterGroupName@
    --     must be supplied.
    --
    -- -   If the source type is @DBSnapshot@, a @DBSnapshotIdentifier@ must be
    --     supplied.
    --
    -- -   Cannot end with a hyphen or contain two consecutive hyphens.
    sourceIdentifier :: Prelude.Maybe Prelude.Text,
    -- | The event source to retrieve events for. If no value is specified, all
    -- events are returned.
    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 to retrieve events for.
--
-- 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
--
-- 'eventCategories', 'describeEvents_eventCategories' - A list of event categories that trigger notifications for a event
-- notification subscription.
--
-- 'filters', 'describeEvents_filters' - This parameter is not currently supported.
--
-- 'marker', 'describeEvents_marker' - An optional pagination token provided by a previous DescribeEvents
-- request. If this parameter is specified, the response includes only
-- records beyond the marker, up to the value specified by @MaxRecords@.
--
-- 'maxRecords', 'describeEvents_maxRecords' - The maximum number of records to include in the response. If more
-- records exist than the specified @MaxRecords@ value, a pagination token
-- called a marker is included in the response so that the remaining
-- results can be retrieved.
--
-- Default: 100
--
-- Constraints: Minimum 20, maximum 100.
--
-- 'sourceIdentifier', 'describeEvents_sourceIdentifier' - The identifier of the event source for which events are returned. If not
-- specified, then all sources are included in the response.
--
-- Constraints:
--
-- -   If SourceIdentifier is supplied, SourceType must also be provided.
--
-- -   If the source type is @DBInstance@, then a @DBInstanceIdentifier@
--     must be supplied.
--
-- -   If the source type is @DBSecurityGroup@, a @DBSecurityGroupName@
--     must be supplied.
--
-- -   If the source type is @DBParameterGroup@, a @DBParameterGroupName@
--     must be supplied.
--
-- -   If the source type is @DBSnapshot@, a @DBSnapshotIdentifier@ must be
--     supplied.
--
-- -   Cannot end with a hyphen or contain two consecutive hyphens.
--
-- 'sourceType', 'describeEvents_sourceType' - The event source to retrieve events for. If no value is specified, all
-- events are returned.
--
-- '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,
      eventCategories = Prelude.Nothing,
      filters = Prelude.Nothing,
      marker = Prelude.Nothing,
      maxRecords = Prelude.Nothing,
      sourceIdentifier = Prelude.Nothing,
      sourceType = Prelude.Nothing,
      startTime = Prelude.Nothing
    }

-- | The number of minutes to retrieve events for.
--
-- 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

-- | A list of event categories that trigger notifications for a event
-- notification subscription.
describeEvents_eventCategories :: Lens.Lens' DescribeEvents (Prelude.Maybe [Prelude.Text])
describeEvents_eventCategories = Lens.lens (\DescribeEvents' {eventCategories} -> eventCategories) (\s@DescribeEvents' {} a -> s {eventCategories = a} :: DescribeEvents) Prelude.. Lens.mapping Lens.coerced

-- | This parameter is not currently supported.
describeEvents_filters :: Lens.Lens' DescribeEvents (Prelude.Maybe [Filter])
describeEvents_filters = Lens.lens (\DescribeEvents' {filters} -> filters) (\s@DescribeEvents' {} a -> s {filters = a} :: DescribeEvents) Prelude.. Lens.mapping Lens.coerced

-- | An optional pagination token provided by a previous DescribeEvents
-- request. If this parameter is specified, the response includes only
-- records beyond the marker, up to the value specified by @MaxRecords@.
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 records to include in the response. If more
-- records exist than the specified @MaxRecords@ value, a pagination token
-- called a marker is included in the response so that the remaining
-- results can be retrieved.
--
-- 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 are returned. If not
-- specified, then all sources are included in the response.
--
-- Constraints:
--
-- -   If SourceIdentifier is supplied, SourceType must also be provided.
--
-- -   If the source type is @DBInstance@, then a @DBInstanceIdentifier@
--     must be supplied.
--
-- -   If the source type is @DBSecurityGroup@, a @DBSecurityGroupName@
--     must be supplied.
--
-- -   If the source type is @DBParameterGroup@, a @DBParameterGroupName@
--     must be supplied.
--
-- -   If the source type is @DBSnapshot@, a @DBSnapshotIdentifier@ must be
--     supplied.
--
-- -   Cannot end with a hyphen or contain two consecutive hyphens.
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.
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` eventCategories
      `Prelude.hashWithSalt` filters
      `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 eventCategories
      `Prelude.seq` Prelude.rnf filters
      `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.=: ("2014-10-31" :: Prelude.ByteString),
        "Duration" Data.=: duration,
        "EndTime" Data.=: endTime,
        "EventCategories"
          Data.=: Data.toQuery
            ( Data.toQueryList "EventCategory"
                Prelude.<$> eventCategories
            ),
        "Filters"
          Data.=: Data.toQuery
            (Data.toQueryList "Filter" Prelude.<$> filters),
        "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],
    -- | An optional pagination token provided by a previous Events request. If
    -- this parameter is specified, the response includes only records beyond
    -- the marker, up to the value specified by @MaxRecords@ .
    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' - An optional pagination token provided by a previous Events request. If
-- this parameter is specified, the response includes only records beyond
-- the marker, up to the value specified by @MaxRecords@ .
--
-- '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

-- | An optional pagination token provided by a previous Events request. If
-- this parameter is specified, the response includes only records beyond
-- the marker, up to the value specified by @MaxRecords@ .
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