update changelog and refactor

CHANGELOG.md

@@ -7,6 +7,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Added
+
+- Attach to `[:absinthe, :subscription, :publish]` (both `:start` and `:stop`)
+- New `graphql.event.type` trace attribute, with value `operation` or `publish`
+
 ## [2.2.1] - 2024-02-21
 
 ### Changed

lib/instrumentation.ex

@@ -71,28 +71,28 @@ defmodule OpentelemetryAbsinthe.Instrumentation do
     :telemetry.attach(
       {__MODULE__, :operation_start},
       [:absinthe, :execute, :operation, :start],
-      &__MODULE__.handle_operation_start/4,
+      &__MODULE__.handle_start/4,
       Map.put(config, :type, :operation)
     )
 
     :telemetry.attach(
       {__MODULE__, :operation_stop},
       [:absinthe, :execute, :operation, :stop],
-      &__MODULE__.handle_operation_stop/4,
+      &__MODULE__.handle_stop/4,
       Map.put(config, :type, :operation)
     )
 
     :telemetry.attach(
       {__MODULE__, :publish_start},
       [:absinthe, :subscription, :publish, :start],
-      &__MODULE__.handle_operation_start/4,
+      &__MODULE__.handle_start/4,
       Map.put(config, :type, :publish)
     )
 
     :telemetry.attach(
       {__MODULE__, :publish_stop},
       [:absinthe, :subscription, :publish, :stop],
-      &__MODULE__.handle_operation_stop/4,
+      &__MODULE__.handle_stop/4,
       Map.put(config, :type, :publish)
     )
   end
@@ -104,7 +104,7 @@ defmodule OpentelemetryAbsinthe.Instrumentation do
     :telemetry.detach({__MODULE__, :publish_stop})
   end
 
-  def handle_operation_start(_event_name, _measurements, metadata, config) do
+  def handle_start(_event_name, _measurements, metadata, config) do
     document = metadata.blueprint.input
     variables = metadata |> Map.get(:options, []) |> Keyword.get(:variables, %{})
 
@@ -125,7 +125,7 @@ defmodule OpentelemetryAbsinthe.Instrumentation do
     Tracer.set_current_span(new_ctx)
   end
 
-  def handle_operation_stop(_event_name, measurements, data, config) do
+  def handle_stop(_event_name, measurements, data, config) do
     operation_type = get_operation_type(data)
     operation_name = get_operation_name(data)