Packages
commanded
0.19.1
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/aggregates/supervisor.ex
defmodule Commanded.Aggregates.Supervisor do
@moduledoc """
Supervises `Commanded.Aggregates.Aggregate` instance processes.
"""
use DynamicSupervisor
require Logger
alias Commanded.Aggregates.Aggregate
alias Commanded.Registration
def child_spec(arg) do
Registration.supervisor_child_spec(__MODULE__, arg)
end
def start_link(arg) do
DynamicSupervisor.start_link(__MODULE__, arg, name: __MODULE__)
end
@doc """
Open an aggregate instance process for the given aggregate module and unique
indentity.
Returns `{:ok, aggregate_uuid}` when a process is sucessfully started, or is
already running.
"""
def open_aggregate(aggregate_module, aggregate_uuid)
when is_atom(aggregate_module) and is_binary(aggregate_uuid) do
Logger.debug(fn ->
"Locating aggregate process for `#{inspect(aggregate_module)}` with UUID " <>
inspect(aggregate_uuid)
end)
name = Aggregate.name(aggregate_module, aggregate_uuid)
child_spec = {Aggregate, aggregate_module: aggregate_module, aggregate_uuid: aggregate_uuid}
case Registration.start_child(name, __MODULE__, child_spec) do
{:ok, _pid} ->
{:ok, aggregate_uuid}
{:ok, _pid, _info} ->
{:ok, aggregate_uuid}
{:error, {:already_started, _pid}} ->
{:ok, aggregate_uuid}
reply ->
reply
end
end
def open_aggregate(_aggregate_module, aggregate_uuid),
do: {:error, {:unsupported_aggregate_identity_type, aggregate_uuid}}
def init(_arg) do
DynamicSupervisor.init(strategy: :one_for_one)
end
end