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eventstore
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0.0.1
Event store using PostgreSQL for persistence.
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lib/eventstore/storage.ex
defmodule EventStore.Storage do
use GenServer
require Logger
alias EventStore.Storage
alias EventStore.Storage.Stream
def start_link do
config = Application.get_env(:eventstore, Storage)
GenServer.start_link(__MODULE__, config)
end
def initialize_store!(storage) do
GenServer.call(storage, :initialize_store)
end
def append_to_stream(storage, stream_uuid, expected_version, events) do
GenServer.call(storage, {:append_to_stream, stream_uuid, expected_version, events})
end
def read_stream_forward(storage, stream_uuid, start_version, count \\ nil) do
GenServer.call(storage, {:read_stream_forward, stream_uuid, start_version, count})
end
def init(config) do
Postgrex.start_link(config)
end
def handle_call(:initialize_store, _from, conn) do
Storage.Initializer.run!(conn)
{:reply, :ok, conn}
end
def handle_call({:append_to_stream, stream_uuid, expected_version, events}, _from, conn) do
reply = Stream.append_to_stream(conn, stream_uuid, expected_version, events)
{:reply, reply, conn}
end
def handle_call({:read_stream_forward, stream_uuid, start_version, count}, _from, conn) do
reply = Stream.read_stream_forward(conn, stream_uuid, start_version, count)
{:reply, reply, conn}
end
end