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eventstore
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Event store using PostgreSQL for persistence.
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Files
lib/event_store/subscriptions/single_stream_subscription.ex
defmodule EventStore.Subscriptions.SingleStreamSubscription do
alias EventStore.Storage
alias EventStore.Streams.Stream
def event_id(%EventStore.RecordedEvent{stream_version: stream_version}) do
stream_version
end
def last_ack(%EventStore.Storage.Subscription{last_seen_stream_version: last_seen_stream_version}) do
last_seen_stream_version
end
def unseen_events(stream, last_seen_stream_version, count) do
start_version = last_seen_stream_version + 1
case Stream.read_stream_forward(stream, start_version, count) do
{:ok, _events} = reply -> reply
{:error, :stream_not_found} -> {:ok, []}
end
end
def ack_last_seen_event(stream_uuid, subscription_name, last_stream_version) do
Storage.ack_last_seen_event(stream_uuid, subscription_name, nil, last_stream_version)
end
end