[components] Explicit glob in definitions

Author: schrockn

Diff for: python_modules/libraries/dagster-components/dagster_components/lib/definitions_component/component.py

@@ -1,10 +1,11 @@
+import glob
 import importlib
 from pathlib import Path
 from typing import Optional
 
 from dagster._core.definitions.definitions_class import Definitions
 from dagster._core.definitions.module_loaders.load_defs_from_module import (
-    load_definitions_from_module,
+    load_definitions_from_modules,
 )
 from dagster._utils import pushd
 from pydantic import Field
@@ -49,12 +50,17 @@ def build_defs(self, context: ComponentLoadContext) -> Definitions:
             ]
             component_module_name = ".".join([context.module_name, *component_module_relative_path])
 
-            defs_file_path = (
-                Path(self.definitions_path) if self.definitions_path else Path("definitions.py")
-            ).absolute()
-            if defs_file_path.name != "__init__.py":
-                component_module_name = f"{component_module_name}.{defs_file_path.stem}"
+            defs_file_glob = self.definitions_path if self.definitions_path else "definitions.py"
 
-            module = importlib.import_module(component_module_name)
+            files = glob.glob(defs_file_glob)
 
-        return load_definitions_from_module(module)
+            module_names = []
+            for file in files:
+                module_names.append(f"{component_module_name}.{Path(file).stem}")
+
+            modules = []
+            for module_name in module_names:
+                module = importlib.import_module(module_name)
+                modules.append(module)
+
+        return load_definitions_from_modules(modules)

Diff for: python_modules/libraries/dagster-components/dagster_components_tests/integration_tests/components/definitions/explicit_glob/component.yaml

@@ -0,0 +1,4 @@
+type: definitions@dagster_components
+
+params:
+  definitions_path: "*.py"

Diff for: python_modules/libraries/dagster-components/dagster_components_tests/integration_tests/components/definitions/explicit_glob/file_one.py

@@ -0,0 +1,5 @@
+from dagster import asset
+
+
+@asset
+def file_one_asset() -> None: ...

Diff for: python_modules/libraries/dagster-components/dagster_components_tests/integration_tests/components/definitions/explicit_glob/file_two.py

@@ -55,3 +55,10 @@ def test_definitions_component_validation_error() -> None:
         load_test_component_defs("definitions/validation_error_file")
 
     assert "component.yaml:4" in str(e.value)
+
+
+def test_definitions_explicit_glob() -> None:
+    defs = load_test_component_defs("definitions/explicit_glob")
+    assert {spec.key for spec in defs.get_all_asset_specs()} == {
+        AssetKey("file_one_asset"),
+    }