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68 changes: 68 additions & 0 deletions
68
apps/indexer/lib/indexer/fetcher/coin_balance_daily_updater.ex
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,68 @@ | ||
| defmodule Indexer.Fetcher.CoinBalanceDailyUpdater do | ||
| @moduledoc """ | ||
| Accumulates and periodically updates daily coin balances | ||
| """ | ||
|
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| use GenServer | ||
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| alias Explorer.Chain | ||
| alias Explorer.Counters.AverageBlockTime | ||
| alias Timex.Duration | ||
|
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| @default_update_interval :timer.seconds(10) | ||
|
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| def start_link(_) do | ||
| GenServer.start_link(__MODULE__, :ok, name: __MODULE__) | ||
| end | ||
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| @impl true | ||
| def init(_) do | ||
| schedule_next_update() | ||
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| {:ok, %{}} | ||
| end | ||
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| def add_daily_balances_params(daily_balances_params) do | ||
| GenServer.cast(__MODULE__, {:add_daily_balances_params, daily_balances_params}) | ||
| end | ||
|
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| @impl true | ||
| def handle_cast({:add_daily_balances_params, daily_balances_params}, state) do | ||
| {:noreply, Enum.reduce(daily_balances_params, state, &put_new_param/2)} | ||
| end | ||
|
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| defp put_new_param(%{day: day, address_hash: address_hash, value: value} = param, acc) do | ||
| Map.update(acc, {address_hash, day}, param, fn %{value: old_value} = old_param -> | ||
| if is_nil(old_value) or value > old_value, do: param, else: old_param | ||
| end) | ||
| end | ||
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| @impl true | ||
| def handle_info(:update, state) when state == %{} do | ||
| schedule_next_update() | ||
|
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| {:noreply, %{}} | ||
| end | ||
|
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| def handle_info(:update, state) do | ||
| Chain.import(%{address_coin_balances_daily: %{params: Map.values(state)}}) | ||
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| schedule_next_update() | ||
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| {:noreply, %{}} | ||
| end | ||
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| def handle_info(_, state) do | ||
| {:noreply, state} | ||
| end | ||
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| defp schedule_next_update do | ||
| update_interval = | ||
| case AverageBlockTime.average_block_time() do | ||
| {:error, :disabled} -> @default_update_interval | ||
| block_time -> round(Duration.to_milliseconds(block_time)) | ||
| end | ||
|
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| Process.send_after(self(), :update, update_interval) | ||
| end | ||
| end |
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