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@mveytsman
Last active May 25, 2021 10:24
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LiveView -> Honeybadger via telemetry
defmodule BikeBrigade.HoneybadgerTelemetry do
require Logger
@events [
[:phoenix, :live_view, :mount, :start],
[:phoenix, :live_view, :handle_params, :start],
[:phoenix, :live_view, :handle_event, :start],
[:phoenix, :live_component, :handle_event, :start]
]
def attach do
case :telemetry.attach_many(__MODULE__, @events, &handle_event/4, nil) do
:ok ->
Logger.debug("#{__MODULE__} attached to #{inspect(@events)}")
:ok
{:error, _} = error ->
Logger.warn("failed to attach to Phoenix events: #{inspect(error)}")
error
end
end
def handle_event(
[:phoenix, :live_view, :mount, :start],
_measurements,
%{socket: socket, params: params, session: session},
_config
) do
put_plug_env(socket, params, session)
Honeybadger.add_breadcrumb("mount",
category: "live_view",
metadata: %{
params: inspect(params)
}
)
end
def handle_event(
[:phoenix, :live_view, :handle_params, :start],
_measurements,
%{params: params},
_config
) do
update_plug_env_params(params)
Honeybadger.add_breadcrumb("handle_params",
category: "live_view",
metadata: %{
params: inspect(params)
}
)
end
def handle_event(
[:phoenix, :live_view, :handle_event, :start],
_measurements,
%{event: event, params: params},
_config
) do
Honeybadger.add_breadcrumb("handle_event \"#{event}\"",
category: "live_view",
metadata: %{
params: inspect(params)
}
)
end
def handle_event(
[:phoenix, :live_component, :handle_event, :start],
_measurements,
%{event: event, component: component, params: params},
_config
) do
Honeybadger.add_breadcrumb("handle_event \"#{event}\"",
category: "live_component",
metadata: %{
component: module_to_string(component),
params: inspect(params)
}
)
end
defp put_plug_env(socket, params, _session) do
# This is a hack to make sure we have a `:context` key in out context, so that HoneyBadger reports our `plug_env` outside of it
if Honeybadger.context()[:context] == nil do
Honeybadger.context(context: %{})
end
Honeybadger.context(
plug_env: %{
component: module_to_string(socket.view),
action: socket.assigns.live_action,
params: params,
session: %{}, # Not sending session for now
url: URI.to_string(socket.host_uri)
}
)
end
defp update_plug_env_params(params) do
(Honeybadger.context()[:plug_env] || %{})
|> Map.put(:params, params)
|> Honeybadger.context()
end
# Copied from Honeybadger.Utils for portability
defp module_to_string(module) do
module
|> Module.split()
|> Enum.join(".")
end
end
@mfilej
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mfilej commented May 25, 2021

I ended up just calling PlatformWeb.HoneybadgerTelemetry.attach() from inside MyWeb.Application.start but I'm not sure if that's the right thing to do.

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