Upgrade semconv gen to weaver v0.17.0 (#7172)

- Remove temporary fix to filter out deprecated metrics (addressed in
open-telemetry/weaver#870)
- Handle empty briefs gracefully
- Handle empty attributes gracefully
- Regenerate v1.36.0 semconv to fix docs

[Weaver v0.17.0
release](https://github.com/open-telemetry/weaver/releases/tag/v0.17.0)

Follow up to #7163

---------

Co-authored-by: Robert Pająk <[email protected]>

Author: MrAlias

semconv/templates/registry/go/helpers.j2

@@ -41,12 +41,16 @@ Examples: {{ attr.examples | trim("[]") }}
 {%- endmacro -%}
 
 {%- macro lower_first(line) -%}
+{%- if line is string and line | length > 1 -%}
 {%- if line[0] is upper and line[1] is upper -%}
 {#- Assume an acronym -#}
 {{ line }}
 {%- else -%}
 {{ line[0]|lower }}{{ line[1:] }}
 {%- endif -%}
+{%- elif line is not none -%}
+{{ line }}
+{%- endif -%}
 {%- endmacro -%}
 
 {%- macro first_word(line, delim=" ") -%}

semconv/templates/registry/go/instrument.j2

@@ -133,7 +133,7 @@ func (m {{ name }}) Add(
 {%- macro add_method(metric, inst, pkg="") -%}
 
 // Add adds incr to the existing count.
-{%- if metric.attributes | length > 0 %}
+{%- if metric.attributes is not none and metric.attributes | length > 0 %}
 {{ params_docs(metric.attributes, pkg=pkg) }}
 {%- if metric.note is defined %}
 //
@@ -189,7 +189,7 @@ func (m {{ name }}) Record(
 {%- macro record_method(metric, inst, pkg="") -%}
 
 // Record records val to the current distribution.
-{%- if metric.attributes | length > 0 %}
+{%- if metric.attributes is not none and metric.attributes | length > 0 %}
 {{ params_docs(metric.attributes, pkg=pkg) }}
 {%- if metric.note is defined %}
 //

semconv/templates/registry/go/metric.go.j2

@@ -26,19 +26,27 @@ var (
 type {{ name }}Attr {{ h.member_type(attr.type.members[0]) }}
 
 var (
-{%- for m in attr.type.members if not m.deprecated %}
-	{%- set m_name = name ~ h.to_go_name(m.id, ctx.root_namespace) %}
-{{ h.prefix_brief(m.brief, m_name ~ " is ") | comment(format="go_1tab") }}
-	{{ m_name }} {{ name }}Attr = {% if attr.type.members[0].value is string -%}
-		"{{ m.value }}"
+{%- for m in attr.type.members %}
+	{%- set m_name = name ~ h.to_go_name(m.id, ctx.root_namespace) -%}
+
+	{% if attr.type.members[0].value is string -%}
+	{%- set m_value = '"' + m.value + '"' -%}
 	{%- else -%}
-		{{ m.value }}
+	{%- set m_value = m.value -%}
 	{%- endif -%}
+
+	{%- if m.brief is defined %}
+	{%- set m_brief = m.brief -%}
+	{%- else %}
+	{%- set m_brief = "standardized value " + m_value + ' of ' + name + 'Attr.' -%}
+	{%- endif %}
+{{ h.prefix_brief(m_brief, m_name ~ " is ") | comment(format="go_1tab") }}
+	{{ m_name }} {{ name }}Attr = {{ m_value }}
 {%- endfor %}
 )
 {%- endfor %}
 
-{%- for metric in ctx.metrics if not metric.deprecated %}
+{%- for metric in ctx.metrics %}
 {%- set metric_name = h.to_go_name(metric.metric_name, ctx.root_namespace) %}
 {%- set metric_inst = metric.metric_name | map_text("instrument", i.instrument_default(metric)) %}
 

semconv/templates/registry/go/weaver.yaml

@@ -27,7 +27,6 @@ templates:
         "exclude_deprecated": true,
         "exclude_root_namespace": $excluded_namespaces,
       }) 
-      | map(select(has("deprecated") | not))
       | semconv_group_metrics_by_root_namespace
     application_mode: each
     file_name: "{{ctx.root_namespace | camel_case | lower }}conv/metric.go"