Skip to content

Instantly share code, notes, and snippets.

Embed
What would you like to do?
non-working Agent reload code
I have an Agent which processes a tree of TOML files on startup,
turning it into a tree of maps. Occasionally, while debugging,
I'd like to reload this tree. So, I set up a "/reload" page to:
- get the current time
- tell the Agent to print a message and then kill itself
- get the current time
- calculate the duration
- render a "reload" page
Although the message is getting printed, the "reload" page is
not appearing. The browser says:
This page isn’t working
localhost didn’t send any data.
Suggestions? See below for the relevant code...
=========================================================
defmodule PhxHttpWeb.Router do
...
scope "/", PhxHttpWeb do
...
get "/reload", TreeController, :reload
...
end
end
=========================================================
defmodule PhxHttpWeb.TreeController do
...
def reload(conn, _params) do
time_1 = Time.utc_now()
message = "Reloading by request."
RefData.reload(message)
time_2 = Time.utc_now()
duration = Time.diff(time_2, time_1, :millisecond)
render(conn, "reload.html",
duration: duration,
item_key: nil)
end
...
end
=========================================================
<!-- templates/tree/reload.html.eex -->
<h2>Reload</h2>
At your request, RefData.Server has been crashed and restarted,
causing the data to be reloaded from the TOML tree.
This process took approximately <%= @duration %> milliseconds.
=========================================================
defmodule RefData do
...
defdelegate reload(message), to: Server
...
end
=========================================================
defmodule RefData.Server do
...
def reload(message) do
IO.puts message
pid = self()
Process.exit(pid, :kill)
end
...
def start_link() do
Agent.start_link(&build_map/0, name: @me)
end
def build_map() do
tree_abs = "/Users/rdm/_Work/P_Elixir/PA_hax/PA_toml" #K
toml_map = Loader.load(tree_abs)
toml_ndx = Indexer.index(toml_map)
Map.put(toml_map, :index, toml_ndx)
end
end
=========================================================
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment