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eventstore
0.14.0-rc.0
1.4.8
1.4.7
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
1.2.3
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1.2.1
1.2.0
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1.0.3
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1.0.1
1.0.0
1.0.0-rc.0
0.17.0
0.16.2
0.16.1
0.16.0
0.15.1
0.15.0
0.14.0
0.14.0-rc.0
0.13.2
0.13.1
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
0.7.3
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0.7.1
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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
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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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lib/event_store/registration/local_registry.ex
defmodule EventStore.Registration.LocalRegistry do
@moduledoc """
Pub/sub using Elixir's local `Registry` module, restricted to running on a
single node only.
"""
@behaviour EventStore.Registration
@doc """
Return the local supervisor child spec.
"""
@spec child_spec() :: [:supervisor.child_spec()]
@impl EventStore.Registration
def child_spec do
[
Supervisor.child_spec(
{
Registry,
keys: :duplicate, name: EventStore.PubSub, partitions: System.schedulers_online()
},
id: EventStore.PubSub
)
]
end
@doc """
Subscribes the caller to the given topic.
"""
@spec subscribe(binary, mapper: (RecordedEvent.t() -> any())) :: :ok | {:error, term}
@impl EventStore.Registration
def subscribe(topic, opts) do
with {:ok, _} <- Registry.register(EventStore.PubSub, topic, opts) do
:ok
end
end
@doc """
Broadcasts message on given topic.
"""
@spec broadcast(binary, term) :: :ok | {:error, term}
@impl EventStore.Registration
def broadcast(topic, message) do
Registry.dispatch(EventStore.PubSub, topic, fn entries ->
for {pid, opts} <- entries do
notify_subscriber(pid, message, opts)
end
end)
end
defp notify_subscriber(pid, {:events, events}, mapper: mapper) when is_function(mapper, 1) do
send(pid, {:events, Enum.map(events, mapper)})
end
defp notify_subscriber(pid, message, _opts) do
send(pid, message)
end
end