{:ok, fsm} = FooFsm.start_link()
FooFsm.foo(fsm)
FooFsm.bar(fsm)
FooFsm.foo(fsm)
defmodule FooFsm do
@behaviour :gen_fsm
def start_link() do
:gen_fsm.start_link(__MODULE__, :ok, [])
end
def foo(pid) do
:gen_fsm.send_event(pid, :foo)
end
def bar(pid) do
:gen_fsm.send_event(pid, :bar)
end
def init(:ok) do
{:ok, :foo_state, []}
end
def foo_state(:foo, state) do
IO.puts "foo state!"
{:next_state, :bar_state, state}
end
def bar_state(:bar, state) do
IO.puts "bar state!"
{:next_state, :foo_state, state}
end
def handle_event(_event, state_name, state) do
{:next_state, state_name, state}
end
def handle_sync_event(_event, _from, state_name, state) do
{:next_state, state_name, state}
end
def handle_info(:stop, _state_name, state) do
{:stop, :normal, state};
end
def handle_info(_Info, state_name, state) do
{:next_state, state_name, state}
end
def code_change(_OldVsn, state_name, state, _extra) do
{:ok, state_name, state}
end
def terminate(reason, _state_name, _state) do
reason
end
end
