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49f0cc16ba
This corrects two issues: 1. We were double serializing topic tracking state (as_json calls were not cached) 2. We were inefficiently serializing items by instantiating extra objects
28 lines
922 B
Ruby
28 lines
922 B
Ruby
# frozen_string_literal: true
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class TopicTrackingStateSerializer < ApplicationSerializer
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attributes :data, :meta
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def data
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serializer = TopicTrackingStateItemSerializer.new(nil, scope: scope, root: false)
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# note we may have 1000 rows, avoiding serializer instansitation saves significant time
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# for 1000 rows this takes it down from 10ms to 3ms on a reasonably fast machine
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object.map do |item|
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serializer.object = item
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serializer.as_json
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end
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end
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def meta
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MessageBus.last_ids(
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TopicTrackingState::LATEST_MESSAGE_BUS_CHANNEL,
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TopicTrackingState::RECOVER_MESSAGE_BUS_CHANNEL,
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TopicTrackingState::DELETE_MESSAGE_BUS_CHANNEL,
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TopicTrackingState::DESTROY_MESSAGE_BUS_CHANNEL,
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TopicTrackingState::NEW_MESSAGE_BUS_CHANNEL,
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TopicTrackingState::UNREAD_MESSAGE_BUS_CHANNEL,
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TopicTrackingState.unread_channel_key(scope.user.id),
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)
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end
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end
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