livebook/lib/livebook_web/live/session_live/attached_live.ex
Jonatan Kłosko a18122cfcb
Further redesign (#112)
* Update logo and favicon

* Tiny updates

* Replace checkbox with switch button

* Build assets

* Move assets/static to priv/static

* Update lib/livebook_web/endpoint.ex

Co-authored-by: José Valim <jose.valim@dashbit.co>

Co-authored-by: José Valim <jose.valim@dashbit.co>
2021-03-23 17:46:33 +01:00

71 lines
2.2 KiB
Elixir

defmodule LivebookWeb.SessionLive.AttachedLive do
use LivebookWeb, :live_view
alias Livebook.{Session, Runtime, Utils}
@impl true
def mount(_params, %{"session_id" => session_id, "current_runtime" => current_runtime}, socket) do
{:ok,
assign(socket,
session_id: session_id,
error_message: nil,
name: if(current_runtime, do: current_runtime.node, else: "")
)}
end
@impl true
def render(assigns) do
~L"""
<div class="flex-col space-y-3">
<%= if @error_message do %>
<div class="mb-3 rounded-lg px-4 py-2 bg-red-100 text-red-400 font-medium">
<%= @error_message %>
</div>
<% end %>
<p class="text-gray-700">
Connect the session to an already running node
and evaluate code in the context of that node.
Thanks to this approach you can work with
an arbitrary Elixir runtime.
Make sure to give the node a name, for example:
</p>
<div class="text-gray-700 markdown">
<%= if Livebook.Config.shortnames? do %>
<pre><code>iex --sname test</code></pre>
<% else %>
<pre><code>iex --name test@127.0.0.1</code></pre>
<% end %>
</div>
<p class="text-gray-700">
Then enter the name of the node below:
</p>
<%= f = form_for :node, "#", phx_submit: "init" %>
<%= text_input f, :name, value: @name, class: "input",
placeholder: if(Livebook.Config.shortnames?, do: "test", else: "test@127.0.0.1") %>
<%= submit "Connect", class: "mt-3 button button-primary" %>
</form>
</div>
"""
end
@impl true
def handle_event("init", %{"node" => %{"name" => name}}, socket) do
node = Utils.node_from_name(name)
case Runtime.Attached.init(node) do
{:ok, runtime} ->
Session.connect_runtime(socket.assigns.session_id, runtime)
{:noreply, assign(socket, name: name, error_message: nil)}
{:error, error} ->
message = runtime_error_to_message(error)
{:noreply, assign(socket, name: name, error_message: message)}
end
end
defp runtime_error_to_message(:unreachable), do: "Node unreachable"
defp runtime_error_to_message(:already_in_use),
do: "Another session is already connected to this node"
end