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Automate code & data workflows with interactive notebooks
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Files
lib/livebook_web/live/session_helpers.ex
defmodule LivebookWeb.SessionHelpers do
import Phoenix.LiveView
alias Phoenix.LiveView.Socket
alias Livebook.Session
alias LivebookWeb.Router.Helpers, as: Routes
@doc """
Creates a new session, redirects on success,
puts an error flash message on failure.
Accepts the same options as `Livebook.Sessions.create_session/1`.
"""
@spec create_session(Socket.t(), keyword()) :: Socket.t()
def create_session(socket, opts \\ []) do
# Revert persistence options to default values if there is
# no file attached to the new session
opts =
if opts[:notebook] != nil and opts[:file] == nil do
Keyword.update!(opts, :notebook, &Livebook.Notebook.reset_persistence_options/1)
else
opts
end
case Livebook.Sessions.create_session(opts) do
{:ok, session} ->
redirect_path = session_path(socket, session.id, opts)
push_redirect(socket, to: redirect_path)
{:error, reason} ->
put_flash(socket, :error, "Failed to create session: #{reason}")
end
end
@doc """
Generate the session path based on the provided options.
"""
@spec session_path(Socket.t(), Session.id(), keyword()) :: String.t()
def session_path(socket, session_id, opts \\ []) do
socket
|> Routes.session_path(:page, session_id)
|> maybe_add_url_hash(opts)
end
defp maybe_add_url_hash(redirect_path, opts) do
case opts[:url_hash] do
nil -> redirect_path
url_hash -> "#{redirect_path}##{url_hash}"
end
end
@doc """
Formats the given list of notebook import messages and puts
into the warning flash.
"""
@spec put_import_warnings(Socket.t(), list(String.t())) :: Socket.t()
def put_import_warnings(socket, messages)
def put_import_warnings(socket, []), do: socket
def put_import_warnings(socket, messages) do
list =
messages
|> Enum.map(fn message -> ["- ", message] end)
|> Enum.intersperse("\n")
flash =
IO.iodata_to_binary([
"We found problems while importing the file and tried to autofix them:\n" | list
])
put_flash(socket, :warning, flash)
end
def uses_memory?(%{runtime: %{total: total}}) when total > 0, do: true
def uses_memory?(_), do: false
end