[OpenAPI] Add a CLI to configure export parameters (#4426)

(cherry picked from commit dbbdd21)

Author: swallez

.gitattributes

@@ -234,5 +234,6 @@ dist/*            binary
 
 output/** linguist-generated=true
 output/schema/validation-errors.json linguist-generated=false
+compiler-rs/compiler-wasm-lib/pkg/* linguist-generated=true
 
 ####################################################################################################

Makefile

@@ -49,10 +49,11 @@ transform-expand-generics: ## Create a new schema with all generics expanded
 	@npm run transform-expand-generics --prefix compiler
 
 transform-to-openapi: ## Generate the OpenAPI definition from the compiled schema
-	@npm run transform-to-openapi --prefix compiler
+	@npm run transform-to-openapi -- --schema output/schema/schema.json --flavor stack --output output/openapi/elasticsearch-openapi.json
+	@npm run transform-to-openapi -- --schema output/schema/schema.json --flavor serverless --output output/openapi/elasticsearch-serverless-openapi.json
 
 filter-for-serverless: ## Generate the serverless version from the compiled schema
-	@npm run --prefix compiler filter-by-availability -- --serverless --visibility=public --input ../output/schema/schema.json --output ../output/schema/schema-serverless.json
+	@npm run --prefix compiler filter-by-availability -- --serverless --visibility=public --input ../output/schema/schema.json --output ../output/output/openapi/elasticsearch-serverless-openapi.json
 
 dump-routes: ## Create a new schema with all generics expanded
 	@npm run dump-routes --prefix compiler

compiler-rs/Cargo.lock

@@ -10,6 +10,7 @@ members = [
 [workspace.dependencies]
 anyhow = "1"
 arcstr = "1"
+argh = "0.1"
 clap = "4"
 console_error_panic_hook = "0.1"
 convert_case = "0.6"

compiler-rs/Cargo.toml

@@ -7,6 +7,8 @@ publish = false
 [dependencies]
 clients_schema = {path="../clients_schema"}
 
+argh = { workspace = true }
+derive_more = { version = "2", features = ["from_str"] }
 serde_json = { workspace = true }
 itertools = { workspace = true }
 icu_segmenter = { workspace = true }
@@ -16,5 +18,3 @@ indexmap = { workspace = true }
 
 tracing = { workspace = true }
 tracing-subscriber = { workspace = true }
-clap = { workspace = true, features = ["derive"] }
-

compiler-rs/clients_schema_to_openapi/Cargo.toml

@@ -0,0 +1,62 @@
+use std::path::PathBuf;
+use argh::FromArgs;
+use clients_schema::Flavor;
+use crate::Configuration;
+
+/// Convert schema.json to an OpenAPI schema
+#[derive(Debug, FromArgs)]
+pub struct Cli {
+    /// schema file to transform.
+    #[argh(option)]
+    pub schema: PathBuf,
+
+    /// output file.
+    #[argh(option)]
+    pub output: PathBuf,
+
+    //---- Fields from lib::Configuration
+
+    /// the flavor to generate [all, stack, serverless - default = all]
+    #[argh(option, default = "SchemaFlavor::All")]
+    pub flavor: SchemaFlavor,
+
+    /// add enum descriptions to property descriptions [default = true]
+    #[argh(option, default = "true")]
+    pub lift_enum_descriptions: bool,
+
+    /// generate only this namespace (can be repeated)
+    #[argh(option)]
+    pub namespace: Vec<String>,
+}
+
+use derive_more::FromStr;
+
+#[derive(Debug, Clone, PartialEq, FromStr)]
+pub enum SchemaFlavor {
+    /// No schema filtering
+    All,
+    /// Stack (stateful) flavor
+    Stack,
+    /// Serverless flavor
+    Serverless,
+}
+
+impl From<Cli> for Configuration {
+    fn from(val: Cli) -> Configuration {
+        let flavor = match val.flavor {
+            SchemaFlavor::All => None,
+            SchemaFlavor::Serverless => Some(Flavor::Serverless),
+            SchemaFlavor::Stack => Some(Flavor::Stack),
+        };
+
+        Configuration {
+            flavor,
+            lift_enum_descriptions: val.lift_enum_descriptions,
+            namespaces: if val.namespace.is_empty() {
+                None
+            } else {
+                Some(val.namespace)
+            },
+        }
+    }
+}

compiler-rs/clients_schema_to_openapi/src/cli.rs

@@ -19,6 +19,7 @@ mod components;
 mod paths;
 mod schemas;
 mod utils;
+pub mod cli;
 
 use indexmap::IndexMap;
 
@@ -29,18 +30,10 @@ use crate::components::TypesAndComponents;
 
 pub struct Configuration {
     pub flavor: Option<Flavor>,
+    pub namespaces: Option<Vec<String>>,
     pub lift_enum_descriptions: bool,
 }
 
-impl Default for Configuration {
-    fn default() -> Self {
-        Self {
-            flavor: None,
-            lift_enum_descriptions: true,
-        }
-    }
-}
-
 /// Convert an API model into an OpenAPI v3 schema, optionally filtered for a given flavor
 pub fn convert_schema(mut schema: IndexedModel, config: Configuration) -> anyhow::Result<OpenAPI> {
     // Expand generics
@@ -105,6 +98,11 @@ pub fn convert_expanded_schema(model: &IndexedModel, config: &Configuration) ->
 
     // Endpoints
     for endpoint in &model.endpoints {
+        if let Some(namespaces) = &config.namespaces {
+            if !namespaces.contains(&endpoint.name) {
+                continue;
+            }
+        }
         paths::add_endpoint(endpoint, &mut tac, &mut openapi.paths)?;
     }