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Event store using PostgreSQL for persistence.
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Files
lib/event_store/subscriptions/all_streams_subscription.ex
defmodule EventStore.Subscriptions.AllStreamsSubscription do
@moduledoc false
@behaviour EventStore.Subscriptions.StreamSubscriptionProvider
alias EventStore.{RecordedEvent,Storage}
alias EventStore.Streams.AllStream
@all_stream "$all"
def extract_ack({event_id, _stream_version}), do: event_id
def event_id(%RecordedEvent{event_id: event_id}), do: event_id
def last_ack(%Storage.Subscription{last_seen_event_id: last_seen_event_id}) do
last_seen_event_id
end
def unseen_event_stream(@all_stream, last_seen, read_batch_size) do
AllStream.stream_forward(last_seen + 1, read_batch_size)
end
def ack_last_seen_event(@all_stream, subscription_name, last_event_id) do
Storage.ack_last_seen_event(@all_stream, subscription_name, last_event_id, nil)
end
end