emit telemetry on server reload

Author: lukaszsamson

apps/language_server/lib/language_server/providers/execute_command/restart.ex

@@ -8,6 +8,15 @@ defmodule ElixirLS.LanguageServer.Providers.ExecuteCommand.Restart do
     {:ok, _pid} =
       Task.start(fn ->
         Logger.info("ElixirLS restart requested")
+
+        JsonRpc.telemetry(
+          "lsp_reload",
+          %{
+            "elixir_ls.lsp_reload_reason" => "client_request"
+          },
+          %{}
+        )
+
         Process.sleep(1000)
         ElixirLS.LanguageServer.restart()
       end)

apps/language_server/lib/language_server/server.ex

@@ -1505,6 +1505,14 @@ defmodule ElixirLS.LanguageServer.Server do
         "Environment variables change detected. ElixirLS will restart"
       )
 
+      JsonRpc.telemetry(
+        "lsp_reload",
+        %{
+          "elixir_ls.lsp_reload_reason" => "env_variables_changed"
+        },
+        %{}
+      )
+
       # sleep so the client has time to show the message
       Process.sleep(5000)
       ElixirLS.LanguageServer.restart()
@@ -1529,6 +1537,14 @@ defmodule ElixirLS.LanguageServer.Server do
     else
       JsonRpc.show_message(:warning, "Mix env change detected. ElixirLS will restart.")
 
+      JsonRpc.telemetry(
+        "lsp_reload",
+        %{
+          "elixir_ls.lsp_reload_reason" => "mix_env_changed"
+        },
+        %{}
+      )
+
       # sleep so the client has time to show the message
       Process.sleep(5000)
       ElixirLS.LanguageServer.restart()
@@ -1551,6 +1567,14 @@ defmodule ElixirLS.LanguageServer.Server do
     else
       JsonRpc.show_message(:warning, "Mix target change detected. ElixirLS will restart")
 
+      JsonRpc.telemetry(
+        "lsp_reload",
+        %{
+          "elixir_ls.lsp_reload_reason" => "mix_target_changed"
+        },
+        %{}
+      )
+
       # sleep so the client has time to show the message
       Process.sleep(5000)
       ElixirLS.LanguageServer.restart()
@@ -1587,6 +1611,14 @@ defmodule ElixirLS.LanguageServer.Server do
           "Project directory change detected. ElixirLS will restart"
         )
 
+        JsonRpc.telemetry(
+          "lsp_reload",
+          %{
+            "elixir_ls.lsp_reload_reason" => "project_dir_changed"
+          },
+          %{}
+        )
+
         # sleep so the client has time to show the message
         Process.sleep(5000)
         ElixirLS.LanguageServer.restart()