Generate stable event constants

buildscripts/templates/registry/incubating_java/IncubatingSemanticEvents.java.j2

@@ -1,7 +1,5 @@
 {%- set my_class_name = ctx.root_namespace | pascal_case ~ "IncubatingEvents" -%}
-{# Uncomment when stable event constants are enabled in buildscripts/templates/registry/java/weaver.yaml:
 {%- set stable_class_name = ctx.root_namespace | pascal_case ~ "Events" -%}
-#}
 
 /*
  * Copyright The OpenTelemetry Authors
@@ -13,9 +11,7 @@ package io.opentelemetry.semconv.incubating;
 @SuppressWarnings("unused")
 public final class {{ my_class_name }} {
   {%- for event in ctx.events -%}
-    {# When stable event constants are enabled, change `event is experimental or event is stable`
-       to `event is experimental` and uncomment the elif block below. #}
-    {%- if event is experimental or event is stable -%}
+    {%- if event is experimental -%}
       {%- if event is deprecated -%}
         {%- if event.deprecated.note == "Uncategorized." -%}
           {%- set deprecated_javadoc = "@deprecated" -%}
@@ -30,12 +26,10 @@ public final class {{ my_class_name }} {
         @Deprecated
       {% endif %}
       public static final String {{ event.name | screaming_snake_case }} = "{{ event.name }}";
-    {# Uncomment when stable event constants are enabled in buildscripts/templates/registry/java/weaver.yaml:
     {% elif event is stable %}
       {%- set stable_class_link = "io.opentelemetry.semconv." ~ stable_class_name ~ "#" ~ (event.name | screaming_snake_case) -%}
       {{ [event.brief, concat_if("\n\nNotes:\n\n", event.note), "@deprecated deprecated in favor of stable {@link " ~ stable_class_link ~ "} event."] | comment }}
       @Deprecated public static final String {{ event.name | screaming_snake_case }} = "{{ event.name }}";
-    #}
     {% endif %}
   {% endfor %}
 

buildscripts/templates/registry/java/weaver.yaml

@@ -29,19 +29,19 @@ templates:
       })
     application_mode: each
     file_name: "{{ctx.root_namespace | pascal_case}}Attributes.java"
-  # - pattern: SemanticEvents.java.j2
-  #   filter: >
-  #     semconv_signal("event"; {
-  #       "exclude_root_namespace": $excluded_namespaces,
-  #       "exclude_stability": ["experimental", "deprecated"]
-  #     })
-  #     | group_by(.root_namespace)
-  #     | map({
-  #         root_namespace: .[0].root_namespace,
-  #         events: sort_by(.name)
-  #     })
-  #   application_mode: each
-  #   file_name: "{{ctx.root_namespace | pascal_case}}Events.java"
+  - pattern: SemanticEvents.java.j2
+    filter: >
+      semconv_signal("event"; {
+        "exclude_root_namespace": $excluded_namespaces,
+        "exclude_stability": ["experimental", "deprecated"]
+      })
+      | group_by(.root_namespace)
+      | map({
+          root_namespace: .[0].root_namespace,
+          events: sort_by(.name)
+      })
+    application_mode: each
+    file_name: "{{ctx.root_namespace | pascal_case}}Events.java"
   # - pattern: SemanticMetrics.java.j2
   #   filter: >
   #     semconv_grouped_metrics({

docs/apidiffs/current_vs_latest/opentelemetry-semconv.txt

@@ -1,2 +1,5 @@
 Comparing source compatibility of opentelemetry-semconv-1.42.0-SNAPSHOT.jar against opentelemetry-semconv-1.42.0.jar
-No changes.
++++  NEW CLASS: PUBLIC(+) FINAL(+) io.opentelemetry.semconv.ExceptionEvents  (not serializable)
+	+++  CLASS FILE FORMAT VERSION: 52.0 <- n.a.
+	+++  NEW SUPERCLASS: java.lang.Object
+	+++  NEW FIELD: PUBLIC(+) STATIC(+) FINAL(+) java.lang.String EXCEPTION

semconv-incubating/src/main/java/io/opentelemetry/semconv/incubating/ExceptionIncubatingEvents.java

@@ -9,8 +9,13 @@
 // buildscripts/templates/registry/incubating_java/IncubatingSemanticEvents.java.j2
 @SuppressWarnings("unused")
 public final class ExceptionIncubatingEvents {
-  /** This event describes a single exception. */
-  public static final String EXCEPTION = "exception";
+  /**
+   * This event describes a single exception.
+   *
+   * @deprecated deprecated in favor of stable {@link
+   *     io.opentelemetry.semconv.ExceptionEvents#EXCEPTION} event.
+   */
+  @Deprecated public static final String EXCEPTION = "exception";
 
   private ExceptionIncubatingEvents() {}
 }

semconv/src/main/java/io/opentelemetry/semconv/ExceptionEvents.java

@@ -0,0 +1,16 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package io.opentelemetry.semconv;
+
+// DO NOT EDIT, this is an Auto-generated file from
+// buildscripts/templates/registry/java/SemanticEvents.java.j2
+@SuppressWarnings("unused")
+public final class ExceptionEvents {
+  /** This event describes a single exception. */
+  public static final String EXCEPTION = "exception";
+
+  private ExceptionEvents() {}
+}