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0.1.0
Spawn Elixir SDK is the support library for the Spawn Actors System
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lib/flow.ex
defmodule SpawnSdk.Flow do
defmodule Broadcast do
defstruct channel: nil, command: nil, payload: nil
@type t :: %__MODULE__{
channel: String.t(),
command: String.t() | atom(),
payload: module()
}
@type channel :: String.t()
@type command :: String.t() | atom()
@type payload :: module() | nil
@spec to(channel(), command(), payload()) :: Broadcast.t()
def to(channel, command, payload) do
command_name = if is_atom(command), do: Atom.to_string(command), else: command
%__MODULE__{
channel: channel,
command: command_name,
payload: payload
}
end
@spec to(channel(), payload()) :: Broadcast.t()
def to(channel, payload) do
%__MODULE__{
channel: channel,
payload: payload
}
end
end
defmodule Pipe do
defstruct actor_name: nil, command: nil
@type t :: %__MODULE__{
actor_name: String.t(),
command: String.t() | atom()
}
@type actor_name :: String.t()
@type command :: String.t() | atom()
@spec to(actor_name(), command()) :: Pipe.t()
def to(actor_name, command) do
command_name = if is_atom(command), do: Atom.to_string(command), else: command
%__MODULE__{
actor_name: actor_name,
command: command_name
}
end
end
defmodule Forward do
defstruct actor_name: nil, command: nil
@type t :: %__MODULE__{
actor_name: String.t(),
command: String.t() | atom()
}
@type actor_name :: String.t()
@type command :: String.t() | atom()
@spec to(actor_name(), command()) :: Forward.t()
def to(actor_name, command) do
command_name = if is_atom(command), do: Atom.to_string(command), else: command
%__MODULE__{
actor_name: actor_name,
command: command_name
}
end
end
defmodule SideEffect do
defstruct actor_name: nil, command: nil, payload: nil, scheduled_to: nil
@type t :: %__MODULE__{
actor_name: String.t(),
command: String.t() | atom(),
payload: module(),
scheduled_to: integer() | nil
}
@type actor_name :: String.t()
@type command :: String.t() | atom()
@type payload :: module() | nil
@spec of() :: list(SideEffect.t())
def of(), do: []
@spec effect(list(), actor_name(), command(), payload()) :: list(SideEffect.t())
def effect(list, actor_name, command, payload \\ nil, opts \\ []) do
effect = to(actor_name, command, payload, opts)
list ++ [effect]
end
@spec to(actor_name(), command(), payload(), list()) :: SideEffect.t()
def to(actor_name, command, payload \\ nil, opts \\ []) do
command_name = if is_atom(command), do: Atom.to_string(command), else: command
%__MODULE__{
actor_name: actor_name,
command: command_name,
payload: payload,
scheduled_to: parse_scheduled_to(opts[:delay], opts[:scheduled_to])
}
end
defp parse_scheduled_to(nil, nil), do: nil
defp parse_scheduled_to(delay_ms, _scheduled_to) when is_integer(delay_ms) do
scheduled_to = DateTime.add(DateTime.utc_now(), delay_ms, :millisecond)
parse_scheduled_to(nil, scheduled_to)
end
defp parse_scheduled_to(_delay_ms, nil), do: nil
defp parse_scheduled_to(_delay_ms, scheduled_to) do
DateTime.to_unix(scheduled_to, :millisecond)
end
end
end