adding metrics semconv (#1633)

Author: brettmc

script/semantic-conventions/templates/registry/php/Metrics.php.j2

@@ -0,0 +1,31 @@
+<?php
+
+// DO NOT EDIT, this is an Auto-generated file from script/semantic-conventions
+
+declare(strict_types=1);
+
+namespace OpenTelemetry\SemConv\Metrics;
+
+interface {{ ctx.root_namespace | pascal_case }}Metrics
+{
+{# blank line #}
+{%- for metric in ctx.metrics %}
+{% set const_name = metric.metric_name | screaming_snake_case %}
+    {%- if metric is deprecated %}
+        {%- set deprecated_phpdoc = "@deprecated" -%}
+    {% else %}
+        {% set deprecated_phpdoc = "" %}
+    {%- endif -%}
+    {%- if metric is stable -%}
+        {%- set stability_phpdoc = "@stable" -%}
+    {%- else -%}
+        {%- set stability_phpdoc = "@experimental" -%}
+    {%- endif -%}
+    {%- set instrument_phpdoc = "Instrument: " ~ metric.instrument -%}
+    {%- set unit_phpdoc = "Unit: " ~ metric.unit -%}
+    {{ [metric.brief, concat_if(metric.note), instrument_phpdoc, unit_phpdoc, deprecated_phpdoc, stability_phpdoc] | comment(indent=4)  | replace(' \n', '\n') }}
+    public const {{ const_name }} = '{{ metric.metric_name }}';
+
+{% endfor %}
+}
+{# blank line #}

script/semantic-conventions/templates/registry/php/weaver.yaml

@@ -3,6 +3,7 @@ params:
   # this behavior is fully controlled by jinja templates
   # TODO exclude more namespaces, eg: ios, aspnetcore, signalr, android, dotnet, jvm, kestrel, browser, device, ...
   excluded_namespaces: [cloudfoundry, dotnet, hw, nodejs, profile]
+  excluded_metrics_namespaces: [aspnetcore, azure, cicd, container, cpu, cpython, db, dns, dotnet, faas, gen_ai, go, hw, jvm, k8s, kestrel, messaging, nodejs, process, rpc, signalr, system, v8js, vcs]
 
   # excluded attributes will be commented out in the generated code
   # this behavior is fully controlled by jinja templates
@@ -55,6 +56,17 @@ templates:
       | map(.[-1])
     application_mode: single
     file_name: "ResourceAttributeValues.php"
+  - template: Metrics.php.j2
+    filter: >
+      semconv_grouped_metrics({
+        "exclude_root_namespace": $excluded_metrics_namespaces,
+        "exclude_stability": [],
+      }) | map({
+        root_namespace: .root_namespace,
+        metrics: .metrics,
+      })
+    application_mode: each
+    file_name: "Metrics/{{ctx.root_namespace | pascal_case}}Metrics.php"
 whitespace_control:
   trim_blocks: true
   lstrip_blocks: true

src/SemConv/Metrics/HttpMetrics.php

@@ -0,0 +1,115 @@
+<?php
+
+// DO NOT EDIT, this is an Auto-generated file from script/semantic-conventions
+
+declare(strict_types=1);
+
+namespace OpenTelemetry\SemConv\Metrics;
+
+interface HttpMetrics
+{
+    /**
+     * Number of active HTTP requests.
+     *
+     * Instrument: updowncounter
+     * Unit: {request}
+     *
+     * @experimental
+     */
+    public const HTTP_CLIENT_ACTIVE_REQUESTS = 'http.client.active_requests';
+
+    /**
+     * The duration of the successfully established outbound HTTP connections.
+     *
+     * Instrument: histogram
+     * Unit: s
+     *
+     * @experimental
+     */
+    public const HTTP_CLIENT_CONNECTION_DURATION = 'http.client.connection.duration';
+
+    /**
+     * Number of outbound HTTP connections that are currently active or idle on the client.
+     *
+     * Instrument: updowncounter
+     * Unit: {connection}
+     *
+     * @experimental
+     */
+    public const HTTP_CLIENT_OPEN_CONNECTIONS = 'http.client.open_connections';
+
+    /**
+     * Size of HTTP client request bodies.
+     * The size of the request payload body in bytes. This is the number of bytes transferred excluding headers and is often, but not always, present as the [Content-Length](https://www.rfc-editor.org/rfc/rfc9110.html#field.content-length) header. For requests using transport encoding, this should be the compressed size.
+     *
+     * Instrument: histogram
+     * Unit: By
+     *
+     * @experimental
+     */
+    public const HTTP_CLIENT_REQUEST_BODY_SIZE = 'http.client.request.body.size';
+
+    /**
+     * Duration of HTTP client requests.
+     *
+     * Instrument: histogram
+     * Unit: s
+     *
+     * @stable
+     */
+    public const HTTP_CLIENT_REQUEST_DURATION = 'http.client.request.duration';
+
+    /**
+     * Size of HTTP client response bodies.
+     * The size of the response payload body in bytes. This is the number of bytes transferred excluding headers and is often, but not always, present as the [Content-Length](https://www.rfc-editor.org/rfc/rfc9110.html#field.content-length) header. For requests using transport encoding, this should be the compressed size.
+     *
+     * Instrument: histogram
+     * Unit: By
+     *
+     * @experimental
+     */
+    public const HTTP_CLIENT_RESPONSE_BODY_SIZE = 'http.client.response.body.size';
+
+    /**
+     * Number of active HTTP server requests.
+     *
+     * Instrument: updowncounter
+     * Unit: {request}
+     *
+     * @experimental
+     */
+    public const HTTP_SERVER_ACTIVE_REQUESTS = 'http.server.active_requests';
+
+    /**
+     * Size of HTTP server request bodies.
+     * The size of the request payload body in bytes. This is the number of bytes transferred excluding headers and is often, but not always, present as the [Content-Length](https://www.rfc-editor.org/rfc/rfc9110.html#field.content-length) header. For requests using transport encoding, this should be the compressed size.
+     *
+     * Instrument: histogram
+     * Unit: By
+     *
+     * @experimental
+     */
+    public const HTTP_SERVER_REQUEST_BODY_SIZE = 'http.server.request.body.size';
+
+    /**
+     * Duration of HTTP server requests.
+     *
+     * Instrument: histogram
+     * Unit: s
+     *
+     * @stable
+     */
+    public const HTTP_SERVER_REQUEST_DURATION = 'http.server.request.duration';
+
+    /**
+     * Size of HTTP server response bodies.
+     * The size of the response payload body in bytes. This is the number of bytes transferred excluding headers and is often, but not always, present as the [Content-Length](https://www.rfc-editor.org/rfc/rfc9110.html#field.content-length) header. For requests using transport encoding, this should be the compressed size.
+     *
+     * Instrument: histogram
+     * Unit: By
+     *
+     * @experimental
+     */
+    public const HTTP_SERVER_RESPONSE_BODY_SIZE = 'http.server.response.body.size';
+
+}