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eventstore
1.0.0-rc.0
1.4.8
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1.4.6
1.4.4
1.4.3
1.4.2
1.4.1
1.4.0
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1.3.1
1.3.0
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1.0.3
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1.0.0
1.0.0-rc.0
0.17.0
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0.15.1
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0.14.0
0.14.0-rc.0
0.13.2
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0.13.0
0.12.1
0.12.0
0.11.0
0.11.0-rc.0
0.10.1
0.10.0
0.9.0
0.8.1
0.8.0
0.7.4
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0.5.0
0.4.3
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0.4.0
0.3.0
0.2.1
0.2.0
0.1.0
0.0.5
0.0.4
0.0.3
0.0.2
0.0.1
Event store using PostgreSQL for persistence.
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Files
lib/event_store/notifications/broadcaster.ex
defmodule EventStore.Notifications.Broadcaster do
@moduledoc false
# Broadcasts events to subscriptions.
use GenStage
alias EventStore.Registration
defmodule State do
defstruct [:event_store, :registry, :subscribe_to]
end
def start_link(opts \\ []) do
state = %State{
event_store: Keyword.fetch!(opts, :event_store),
registry: Keyword.fetch!(opts, :registry),
subscribe_to: Keyword.fetch!(opts, :subscribe_to)
}
start_opts = Keyword.take(opts, [:name, :timeout, :debug, :spawn_opt])
GenStage.start_link(__MODULE__, state, start_opts)
end
def init(%State{} = state) do
%State{subscribe_to: subscribe_to} = state
{:consumer, state, subscribe_to: [subscribe_to]}
end
def handle_events(events, _from, %State{} = state) do
%State{event_store: event_store, registry: registry} = state
for {stream_uuid, batch} <- events do
:ok = broadcast(event_store, registry, stream_uuid, batch)
end
{:noreply, [], state}
end
defp broadcast(event_store, registry, stream_uuid, events) do
Registration.broadcast(event_store, registry, stream_uuid, {:events, events})
end
end