Use weaver for semantic convention codegen

opentelemetry-semantic-conventions/CHANGELOG.md

@@ -2,6 +2,14 @@
 
 ## vNext
 
+## v0.26.0
+### Changed
+
+- Starting with this version, this crate will use Weaver for the generation of
+  the semantic conventions.
+- Introduced a new feature `semconv_experimental` to enable experimental semantic conventions.
+  This feature is disabled by default.
+
 ## v0.25.0
 ### Changed
 

opentelemetry-semantic-conventions/Cargo.toml

@@ -19,6 +19,10 @@ rust-version = "1.65"
 all-features = true
 rustdoc-args = ["--cfg", "docsrs"]
 
+[features]
+default = []
+semconv_experimental = []
+
 [dev-dependencies]
 opentelemetry = { default-features = false, path = "../opentelemetry" } # for doctests
 opentelemetry_sdk = { features = ["trace"], path = "../opentelemetry-sdk" } # for doctests

opentelemetry-semantic-conventions/scripts/generate-consts-from-spec.sh

@@ -6,7 +6,7 @@ CRATE_DIR="${SCRIPT_DIR}/../"
 
 # freeze the spec version and generator version to make generation reproducible
 SPEC_VERSION=1.27.0
-SEMCOVGEN_VERSION=0.25.0
+WEAVER_VERSION=v0.9.2
 
 cd "$CRATE_DIR"
 
@@ -20,54 +20,24 @@ git fetch origin "v$SPEC_VERSION"
 git reset --hard FETCH_HEAD
 cd "$CRATE_DIR"
 
-docker run --rm \
-	-v "${CRATE_DIR}/semantic-conventions/model:/source" \
-	-v "${CRATE_DIR}/scripts/templates:/templates" \
-	-v "${CRATE_DIR}/src:/output" \
-	otel/semconvgen:$SEMCOVGEN_VERSION \
-  -f /source code \
-	--template /templates/semantic_attributes.rs.j2 \
-	--output /output/attribute.rs \
-	--parameters conventions=attribute
-
-docker run --rm \
-	-v "${CRATE_DIR}/semantic-conventions/model:/source" \
-	-v "${CRATE_DIR}/scripts/templates:/templates" \
-	-v "${CRATE_DIR}/src:/output" \
-	otel/semconvgen:$SEMCOVGEN_VERSION \
-  --only span,event \
-  -f /source code \
-	--template /templates/semantic_attributes.rs.j2 \
-	--output /output/trace.rs \
-	--parameters conventions=trace
-
-docker run --rm \
-	-v "${CRATE_DIR}/semantic-conventions/model:/source" \
-	-v "${CRATE_DIR}/scripts/templates:/templates" \
-	-v "${CRATE_DIR}/src:/output" \
-	otel/semconvgen:$SEMCOVGEN_VERSION \
-  --only resource \
-  -f /source code \
-	--template /templates/semantic_attributes.rs.j2 \
-	--output /output/resource.rs \
-	--parameters conventions=resource
-
-docker run --rm \
-	-v "${CRATE_DIR}/semantic-conventions/model:/source" \
-	-v "${CRATE_DIR}/scripts/templates:/templates" \
-	-v "${CRATE_DIR}/src:/output" \
-	otel/semconvgen:$SEMCOVGEN_VERSION \
-  -f /source code \
-	--template /templates/semantic_metrics.rs.j2 \
-	--output /output/metric.rs
-
 SED=(sed -i)
 if [[ "$(uname)" = "Darwin" ]]; then
   SED=(sed -i "")
 fi
 
 # Keep `SCHEMA_URL` key in sync with spec version
-"${SED[@]}" "s/\(opentelemetry.io\/schemas\/\)[^\"]*\"/\1$SPEC_VERSION\"/" src/lib.rs
+"${SED[@]}" "s/\(opentelemetry.io\/schemas\/\)[^\"]*\"/\1$SPEC_VERSION\"/" scripts/templates/registry/rust/weaver.yaml
+
+docker run --rm \
+  --mount type=bind,source=$CRATE_DIR/semantic-conventions/model,target=/home/weaver/source,readonly \
+  --mount type=bind,source=$CRATE_DIR/scripts/templates,target=/home/weaver/templates,readonly \
+  --mount type=bind,source=$CRATE_DIR/src,target=/home/weaver/target \
+  otel/weaver:$WEAVER_VERSION \
+  registry generate \
+  --registry=/home/weaver/source \
+  --templates=/home/weaver/templates \
+  rust \
+  /home/weaver/target/
 
 # handle doc generation failures
 "${SED[@]}" 's/\[2\]\.$//' src/attribute.rs # remove trailing [2] from few of the doc comments

opentelemetry-semantic-conventions/scripts/templates/registry/rust/attribute.rs.j2

@@ -0,0 +1,24 @@
+{%- import 'macros.j2' as attr_macros -%}
+// DO NOT EDIT, this is an auto-generated file
+//
+// If you want to update the file:
+// - Edit the template at scripts/templates/registry/rust/attributes.rs.j2
+// - Run the script at scripts/generate-consts-from-spec.sh
+
+//! # Semantic Attributes
+//!
+//! The entire set of semantic attributes (or [conventions](https://opentelemetry.io/docs/concepts/semantic-conventions/)) defined by the project. The resource, metric, and trace modules reference these attributes.
+
+{% for root_ns in ctx %}
+    {% for attr in root_ns.attributes | rejectattr("name", "in", params.excluded_attributes) %}
+{{ [attr.brief, concat_if("\n\n# Notes\n\n", attr.note), attr_macros.examples(attr)] | comment }}
+        {% if attr is experimental %}
+#[cfg(feature = "semconv_experimental")]
+        {% endif %}
+        {% if attr is deprecated %}
+#[deprecated(note="{{ attr.deprecated.strip(" \n\"") }}")]
+        {% endif %}
+pub const {{ attr.name | screaming_snake_case }}: &str = "{{ attr.name }}";
+
+    {% endfor %}
+{% endfor %}

opentelemetry-semantic-conventions/scripts/templates/registry/rust/lib.rs.j2

@@ -0,0 +1,25 @@
+//! OpenTelemetry semantic conventions are agreed standardized naming patterns
+//! for OpenTelemetry things. This crate aims to be the centralized place to
+//! interact with these conventions.
+#![warn(
+    future_incompatible,
+    missing_debug_implementations,
+    missing_docs,
+    nonstandard_style,
+    rust_2018_idioms,
+    unreachable_pub,
+    unused
+)]
+#![cfg_attr(test, deny(warnings))]
+#![doc(
+    html_logo_url = "https://raw.githubusercontent.com/open-telemetry/opentelemetry-rust/main/assets/logo.svg"
+)]
+
+pub mod attribute;
+pub mod metric;
+pub mod resource;
+pub mod trace;
+
+/// The schema URL that matches the version of the semantic conventions that
+/// this crate defines.
+pub const SCHEMA_URL: &str = "{{ params.schema_url }}";

opentelemetry-semantic-conventions/scripts/templates/registry/rust/macros.j2

@@ -0,0 +1,13 @@
+{%- macro examples(entity) -%}
+    {% if entity.examples %}
+# Examples
+
+        {% if entity.examples is sequence %}
+            {% for example in entity.examples %}
+ - {{ example | pprint }}
+            {% endfor %}
+        {% else %}
+ - {{ entity.examples | pprint }}
+        {% endif %}
+    {% endif %}
+{% endmacro %}

opentelemetry-semantic-conventions/scripts/templates/registry/rust/metric.rs.j2

@@ -0,0 +1,79 @@
+{%- import 'macros.j2' as metric_macros -%}
+// DO NOT EDIT, this is an auto-generated file
+//
+// If you want to update the file:
+// - Edit the template at scripts{{template}}
+// - Run the script at scripts/generate-consts-from-spec.sh
+
+//! # Metric Semantic Conventions
+//!
+//! The [metric semantic conventions] define a set of standardized attributes to
+//! be used in `Meter`s.
+//!
+//! [metric semantic conventions]: https://github.com/open-telemetry/semantic-conventions/tree/main/model/metric
+//!
+//! ## Usage
+//!
+//! ```rust
+//! use opentelemetry::{global, KeyValue};
+//! use opentelemetry_semantic_conventions as semconv;
+//!
+//! // Assumes we already have an initialized `MeterProvider`
+//! // See: https://github.com/open-telemetry/opentelemetry-rust/blob/main/examples/metrics-basic/src/main.rs
+//! // for an example
+//! let meter = global::meter("mylibraryname");
+//! let histogram = meter
+//!     .u64_histogram(semconv::metric::HTTP_SERVER_REQUEST_DURATION)
+//!     .with_unit("By")
+//!     .with_description("Duration of HTTP server requests.")
+//!     .init();
+//! ```
+
+{% for root_ns in ctx %}
+    {% for metric in root_ns.metrics %}
+{{ ["## Description\n\n", metric.brief, concat_if("\n\n# Notes\n\n", metric.note), metric_macros.examples(metric)] | comment }}
+/// ## Metadata
+/// | | |
+/// |:-|:-
+/// | Instrument: | `{{ metric.instrument }}` |
+/// | Unit: | `{{ metric.unit }}` |
+/// | Status: | `{{ metric.stability | capitalize }}`  |
+        {% if metric.attributes %}
+///
+/// ## Attributes
+/// | Name | Requirement |
+/// |:-|:- |
+        {% endif %}
+        {% for attribute in metric.attributes | rejectattr("name", "in", params.excluded_attributes) | sort(attribute="name") %}
+            {% if attribute.requirement_level %}
+                {% if attribute.requirement_level.conditionally_required %}
+                    {% set req_level = "Conditionally_required" %}
+                    {% set req_message = attribute.requirement_level.conditionally_required %}
+                {% else %}
+                    {% set req_level = (attribute.requirement_level | capitalize) %}
+                    {% set req_message = attribute.requirement_level_msg %}
+                {% endif %}
+            {% else %}
+                {% set req_level = "Unspecified" %}
+                {% set req_message = '' %}
+            {% endif %}
+/// | [`crate::attribute::{{ attribute.name | screaming_snake_case }}`] | `{{ req_level }}`{{ (': ' + req_message if req_message else '') }}
+        {% endfor %}
+        {% if metric.examples %}
+///
+/// # Examples
+///
+            {% for example in metric.examples %}
+/// - `{{ example }}`
+            {% endfor %}
+        {% endif %}
+        {% if metric is experimental %}
+#[cfg(feature = "semconv_experimental")]
+        {% endif %}
+        {% if metric is deprecated %}
+#[deprecated(note="{{ metric.deprecated.strip(" \n\"") }}")]
+        {% endif %}
+pub const {{ metric.metric_name | screaming_snake_case }}: &str = "{{ metric.metric_name }}";
+
+    {% endfor %}
+{% endfor %}

opentelemetry-semantic-conventions/scripts/templates/header_resource.rs → opentelemetry-semantic-conventions/scripts/templates/registry/rust/resource.rs.j2

@@ -1,21 +1,39 @@
-//! # Resource Semantic Conventions
-//!
-//! The [resource semantic conventions] define a set of standardized attributes
-//! to be used in `Resource`s.
-//!
-//! [resource semantic conventions]: https://github.com/open-telemetry/semantic-conventions/tree/main/model/resource
-//!
-//! ## Usage
-//!
-//! ```rust
-//! use opentelemetry::KeyValue;
-//! use opentelemetry_sdk::{trace::{config, TracerProvider}, Resource};
-//! use opentelemetry_semantic_conventions as semconv;
-//!
-//! let _tracer = TracerProvider::builder()
-//!     .with_config(config().with_resource(Resource::new(vec![
-//!         KeyValue::new(semconv::resource::SERVICE_NAME, "my-service"),
-//!         KeyValue::new(semconv::resource::SERVICE_NAMESPACE, "my-namespace"),
-//!     ])))
-//!     .build();
-//! ```
+{%- import 'macros.j2' as attr_macros -%}
+// DO NOT EDIT, this is an auto-generated file
+//
+// If you want to update the file:
+// - Edit the template at scripts/templates/registry/rust/attributes.rs.j2
+// - Run the script at scripts/generate-consts-from-spec.sh
+
+//! # Resource Semantic Conventions
+//!
+//! The [resource semantic conventions] define a set of standardized attributes
+//! to be used in `Resource`s.
+//!
+//! [resource semantic conventions]: https://github.com/open-telemetry/semantic-conventions/tree/main/model/resource
+//!
+//! ## Usage
+//!
+//! ```rust
+//! use opentelemetry::KeyValue;
+//! use opentelemetry_sdk::{trace::{config, TracerProvider}, Resource};
+//! use opentelemetry_semantic_conventions as semconv;
+//!
+//! let _tracer = TracerProvider::builder()
+//!     .with_config(config().with_resource(Resource::new(vec![
+//!         KeyValue::new(semconv::resource::SERVICE_NAME, "my-service"),
+//!         KeyValue::new(semconv::resource::SERVICE_NAMESPACE, "my-namespace"),
+//!     ])))
+//!     .build();
+//! ```
+
+{% for attr in ctx | rejectattr("name", "in", params.excluded_attributes) %}
+    {% if attr is experimental %}
+#[cfg(feature = "semconv_experimental")]
+    {% endif %}
+    {% if attr is deprecated %}
+#[deprecated(note="{{ attr.deprecated.strip(" \n\"") }}")]
+    {% endif %}
+pub use crate::attribute::{{ attr.name | screaming_snake_case }};
+
+{% endfor %}