Internalize client generation

.gitignore

@@ -1,6 +1,9 @@
 # macOS system files
 .DS_Store
 
+# IDE
+.idea/
+
 # Docs build artifacts
 site/
 docs/clients/

Makefile

@@ -4,7 +4,10 @@ PYTHON_VERSION := 3.12
 # Colocated smithy-python checkout that provides the codegen jars.
 SMITHY_PYTHON ?= ../smithy-python
 
-.PHONY: docs docs-serve docs-clean docs-install docs-lock venv gen publish-codegen aio-check
+# Clients per gradle build in `make clients`; lower it if the build runs out of heap.
+BATCH_SIZE ?= 25
+
+.PHONY: docs docs-serve docs-clean docs-install docs-lock venv gen clients publish-codegen aio-check
 
 # Publishes the smithy-python codegen jars to the local Maven cache so `gen`
 # can resolve them. Run once, and again whenever the generator changes.
@@ -14,7 +17,13 @@ publish-codegen:
 # Regenerate one client from its service model: `make gen dynamodb`.
 # Accepts dynamodb, aws_sdk_dynamodb, aws-sdk-dynamodb, or a hyphenated model name.
 gen:
-	SMITHY_PYTHON=$(SMITHY_PYTHON) uv run python codegen/gen_client.py $(filter-out gen,$(MAKECMDGOALS))
+	SMITHY_PYTHON=$(abspath $(SMITHY_PYTHON)) uv run python codegen/gen_client.py $(filter-out gen,$(MAKECMDGOALS))
+
+# Regenerate every client from codegen/aws-models with codegen built from the
+# smithy-python commit in codegen/smithy-python.toml. Each client is cleared first,
+# keeping only the paths in gen_client.py's KEEP, then scripts/client-overlays is applied.
+clients:
+	SMITHY_PYTHON=$(abspath $(SMITHY_PYTHON)) uv run python codegen/gen_client.py --all --pinned --batch-size $(BATCH_SIZE)
 
 # Swallow the client-name argument so make does not treat it as a target.
 # Scoped to `gen` so it does not mask typos in unrelated commands.

codegen/.gitignore

@@ -2,3 +2,4 @@
 build/
 smithy-build.json
 __pycache__/
+.smithy-python/

codegen/build.gradle.kts

@@ -13,28 +13,23 @@ repositories {
     mavenCentral()
 }
 
-// Read the codegen and smithy versions from the colocated smithy-python
-// checkout so this harness tracks whatever generator you build against,
-// rather than a literal that silently rots when smithy-python bumps.
-// Falls back to the last-known values if the checkout can't be read.
-val smithyPython = file(System.getenv("SMITHY_PYTHON") ?: "../smithy-python")
+// Read the codegen and smithy versions from the smithy-python checkout being built
+// against, so this harness tracks that generator instead of a literal that rots.
+val smithyPython = file(System.getenv("SMITHY_PYTHON") ?: "../../smithy-python")
 
-fun readVersion(file: File, regex: Regex, fallback: String): String =
-    if (file.exists()) {
-        file.readLines().firstNotNullOfOrNull { regex.find(it)?.groupValues?.get(1) } ?: fallback
-    } else {
-        fallback
-    }
+fun readVersion(file: File, regex: Regex): String =
+    file.takeIf { it.exists() }
+        ?.readLines()
+        ?.firstNotNullOfOrNull { regex.find(it)?.groupValues?.get(1) }
+        ?: error("cannot read ${regex.pattern} from $file; set SMITHY_PYTHON to a smithy-python checkout")
 
 val codegenVersion = readVersion(
     smithyPython.resolve("codegen/build.gradle.kts"),
     Regex("""version\s*=\s*"([^"]+)""""),
-    "0.5.1",
 )
 val smithyVersion = readVersion(
     smithyPython.resolve("codegen/gradle/libs.versions.toml"),
     Regex("""^smithy\s*=\s*"([^"]+)""""),
-    "1.73.0",
 )
 
 dependencies {