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Encode config values with Keyset
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-13
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-2
lib/cluster_config.ex
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lib/cluster_config.ex
···
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defmodule Hobbes.ClusterConfig do
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alias Hobbes.ClusterConfig
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alias Hobbes.Encoding.Keyset
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import Hobbes.Utils
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@type t :: %__MODULE__{
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num_replicas: pos_integer,
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num_begin_buffers: pos_integer,
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num_commit_buffers: pos_integer,
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num_tlog_teams: pos_integer,
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num_storage_teams: pos_integer,
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initial_shards: [binary],
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}
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@defaults [
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num_replicas: 3,
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num_begin_buffers: 1,
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num_commit_buffers: 3,
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num_tlog_teams: 1,
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num_storage_teams: 2,
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initial_shards: [""],
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]
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@keys Enum.map(@defaults, fn {k, _v} -> k end)
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···
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key = coordinator_config_prefix() <> Atom.to_string(k)
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case List.keyfind(pairs, key, 0) do
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{^key, value} -> {k, String.to_integer(value)}
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{^key, value} -> {k, hd(Keyset.unpack(value))}
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nil -> {k, v}
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end
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end)
···
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value = Map.fetch!(config, k)
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{
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coordinator_config_prefix() <> Atom.to_string(k),
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Integer.to_string(value),
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Keyset.pack([value]),
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}
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end)
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end
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-2
lib/hobbes.ex
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lib/hobbes.ex
···
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config = ClusterConfig.from_opts(opts)
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config_pairs = ClusterConfig.to_pairs(config)
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initial_shards_pairs = Keyword.get(opts, :initial_shards, [""]) |> Enum.map(fn k -> {"config/initial_shards/" <> k, ""} end)
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:ok = Coordinator.write(hd(coordinators), config_pairs ++ initial_shards_pairs)
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:ok = Coordinator.write(hd(coordinators), config_pairs)
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{
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:ok,
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lib/servers/manager.ex
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lib/servers/manager.ex
···
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end
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defp load_config(pairs) when is_list(pairs) do
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initial_shards =
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Enum.reduce(pairs, [], fn
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{"config/initial_shards/" <> shard_key, ""}, acc -> [shard_key | acc]
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{_, _}, acc -> acc
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end)
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|> Enum.reverse()
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fields =
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ClusterConfig.from_pairs(pairs)
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|> Map.from_struct()
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|> Map.put(:initial_shards, initial_shards)
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|> Map.put(:num_replicas, 3)
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struct!(Config, fields)
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end
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