Packages
commanded
1.2.0
1.4.10
1.4.9
1.4.8
1.4.7
1.4.6
1.4.3
1.4.2
1.4.1
1.4.0
1.4.0-rc.0
1.3.1
1.3.0
1.2.0
1.1.1
1.1.0
1.0.1
1.0.0
1.0.0-rc.1
1.0.0-rc.0
0.19.1
0.19.0
0.18.1
0.18.0
0.17.5
0.17.4
0.17.3
0.17.2
0.17.1
0.17.0
0.16.0
0.16.0-rc.1
0.16.0-rc.0
0.15.1
0.15.0
0.14.0
0.14.0-rc.0
0.13.0
0.12.0
0.11.0
0.10.0
0.9.0
0.8.5
0.8.4
0.8.3
0.8.1
0.8.0
0.7.1
0.6.2
0.6.1
0.6.0
0.4.0
0.3.1
0.3.0
0.2.1
0.2.0
0.1.0
Use Commanded to build your own Elixir applications following the CQRS/ES pattern.
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lib/commanded/subscriptions/registry.ex
defmodule Commanded.Subscriptions.Registry do
@moduledoc false
# Provides read/write access to a public ETS table used to track event store
# subscriptions. This process' only use is as the owner of the ETS table and
# should never crash.
use GenServer
def start_link(opts) do
{start_opts, registry_opts} =
Keyword.split(opts, [:debug, :name, :timeout, :spawn_opt, :hibernate_after])
GenServer.start_link(__MODULE__, registry_opts, start_opts)
end
@doc """
Register an event store subscription with the given consistency guarantee.
"""
def register(application, name, module, pid, consistency)
# Ignore subscriptions with `:eventual` consistency
def register(_application, _name, _module, _pid, :eventual), do: :ok
# Register subscriptions with `:strong` consistency
def register(application, name, module, pid, :strong) do
table_name = table_name(application)
true = :ets.insert(table_name, {name, module, pid})
:ok
end
@doc """
Get all registered subscriptions.
"""
def all(application) do
application
|> table_name()
|> :ets.tab2list()
end
def init(args) do
application = Keyword.fetch!(args, :application)
table_name = table_name(application)
table = :ets.new(table_name, [:set, :public, :named_table])
{:ok, table}
end
defp table_name(application), do: Module.concat([application, __MODULE__])
end