Do not generate deprecated attributes

Author: MrAlias

semconv/attribute_group.go.j2

@@ -8,7 +8,13 @@ package semconv // import "go.opentelemetry.io/otel/semconv/{{params.tag}}"
 
 import "go.opentelemetry.io/otel/attribute"
 {%- for group in ctx %}
+{%- set ns = namespace(attrs=0) %}
+{%- for attribute in group.attributes if not attribute.deprecated %}
+{%- set ns.attrs = ns.attrs + 1 %}
+{%- endfor %}
+{%- if ns.attrs > 0 %}
 {{- h.generate_consts(group) }}
 {{- h.generate_funcs(group) }}
 {{- h.generate_vars(group) }}
+{%- endif %}
 {%- endfor %}

semconv/helpers.j2

@@ -48,7 +48,7 @@ Stability: {{ attr.stability | title }}
 
 {{ ["Namespace: " ~ group.root_namespace] | comment(format="go") }}
 const (
-{%- for attribute in group.attributes %}
+{%- for attribute in group.attributes if not attribute.deprecated %}
 {#- TODO: Handle template attributes. #}
 {%- if not attribute.type is template_type %}
 {{ keydoc(attribute) | comment(format="go_1tab") }}
@@ -59,7 +59,7 @@ const (
 {%- endmacro -%}
 
 {%- macro generate_funcs(group) -%}
-{%- for attribute in group.attributes %}
+{%- for attribute in group.attributes if not attribute.deprecated %}
 {#- TODO: Handle template attributes. #}
 {%- if not attribute.type is template_type %}
 
@@ -73,7 +73,7 @@ func {{to_go_name(attribute.name)}}(val {{attribute.type | instantiated_type | m
 
 {%- macro generate_vars(group) -%}
 {#- Render values for enums #}
-{%- for attribute in group.attributes %}
+{%- for attribute in group.attributes if not attribute.deprecated %}
 {%- if attribute is enum %}
 
 {{ ["Enum values for " ~ attribute.name] | comment(format="go") }}