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eventstore
0.16.1
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0.0.1
Event store using PostgreSQL for persistence.
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lib/event_store/registration/registration.ex
defmodule EventStore.Registration do
@moduledoc """
Registration specification for EventStore pub/sub.
"""
alias EventStore.Registration.{DistributedRegistry, LocalRegistry}
@doc """
Return an optional supervisor spec for the registry.
"""
@callback child_spec() :: [:supervisor.child_spec()]
@doc """
Subscribes the caller to the given topic.
"""
@callback subscribe(binary, mapper: (EventStore.RecordedEvent.t() -> any())) :: :ok | {:error, term}
@doc """
Broadcasts message on given topic.
"""
@callback broadcast(binary, term) :: :ok | {:error, term}
@doc """
Return an optional supervisor spec for the registry.
"""
@spec child_spec() :: [:supervisor.child_spec()]
def child_spec, do: registry_provider().child_spec()
@doc """
Subscribes the caller to the given topic.
"""
@spec subscribe(
binary,
selector: (EventStore.RecordedEvent.t() -> any()),
mapper: (EventStore.RecordedEvent.t() -> any())
) :: :ok | {:error, term}
def subscribe(topic, opts \\ []), do: registry_provider().subscribe(topic, opts)
@doc """
Broadcasts message on given topic.
"""
@spec broadcast(binary, term) :: :ok | {:error, term}
def broadcast(topic, message), do: registry_provider().broadcast(topic, message)
@doc """
Get the configured registry provider, defaults to `:local` if not configured.
"""
def registry_provider do
case Application.get_env(:eventstore, :registry, :local) do
:local ->
LocalRegistry
:distributed ->
DistributedRegistry
unknown ->
raise ArgumentError, message: "Unknown `:registry` setting in config: #{inspect(unknown)}"
end
end
end