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Event store using PostgreSQL for persistence.
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lib/event_store/streams/supervisor.ex
defmodule EventStore.Streams.Supervisor do
@moduledoc """
Streams provides access to a stream process by its stream uuid
"""
use Supervisor
require Logger
alias EventStore.Streams.Stream
def start_link(serializer) do
Supervisor.start_link(__MODULE__, [serializer], name: __MODULE__)
end
def open_stream(stream_uuid) do
case Supervisor.start_child(__MODULE__, [stream_uuid]) do
{:ok, stream} -> {:ok, stream}
{:error, {:already_started, stream}} -> {:ok, stream}
end
end
def close_stream(stream_uuid) do
case Registry.lookup(EventStore.Streams, stream_uuid) do
[] -> :ok
[{stream, _}] -> Supervisor.terminate_child(__MODULE__, stream)
end
end
@doc false
def init([serializer]) do
children = [
worker(Stream, [serializer], restart: :temporary)
]
supervise(children, strategy: :simple_one_for_one)
end
end