refactor(onnxruntime): add subpackage and move commands

The onnxruntime commands are moved into a subpackage loader directory.
This subpackage directory is only loaded (and its commands added) when
the onnxruntime is available.
This avoids wrongly indicating that the onnxruntime commands are available
when the package is actually not installed.

optimum/commands/__init__.py

@@ -15,5 +15,4 @@
 from .base import BaseOptimumCLICommand, CommandInfo, RootOptimumCLICommand
 from .env import EnvironmentCommand
 from .export import ExportCommand, ONNXExportCommand, TFLiteExportCommand
-from .onnxruntime import ONNXRuntimeCommand, ONNXRuntimeOptimizeCommand, ONNXRuntimeQuantizeCommand
 from .optimum_cli import optimum_cli_subcommand

optimum/commands/optimum_cli.py

@@ -22,13 +22,12 @@
 from .base import BaseOptimumCLICommand, CommandInfo, RootOptimumCLICommand
 from .env import EnvironmentCommand
 from .export import ExportCommand
-from .onnxruntime import ONNXRuntimeCommand
 
 
 logger = logging.get_logger()
 
 # The table below contains the optimum-cli root subcommands provided by the optimum package
-OPTIMUM_CLI_ROOT_SUBCOMMANDS = [ExportCommand, EnvironmentCommand, ONNXRuntimeCommand]
+OPTIMUM_CLI_ROOT_SUBCOMMANDS = [ExportCommand, EnvironmentCommand]
 
 # The table below is dynamically populated when loading subpackages
 _OPTIMUM_CLI_SUBCOMMANDS = []

optimum/onnxruntime/subpackage/__init__.py

@@ -0,0 +1 @@
+from .commands import ONNXRuntimeCommand

optimum/commands/onnxruntime/__init__.py → optimum/onnxruntime/subpackage/commands/__init__.py

@@ -14,5 +14,3 @@
 # limitations under the License.
 
 from .base import ONNXRuntimeCommand
-from .optimize import ONNXRuntimeOptimizeCommand
-from .quantize import ONNXRuntimeQuantizeCommand

optimum/commands/onnxruntime/base.py → optimum/onnxruntime/subpackage/commands/base.py

@@ -14,11 +14,13 @@
 # limitations under the License.
 """optimum.onnxruntime command-line interface base classes."""
 
-from .. import BaseOptimumCLICommand, CommandInfo
+from optimum.commands import BaseOptimumCLICommand, CommandInfo, optimum_cli_subcommand
+
 from .optimize import ONNXRuntimeOptimizeCommand
 from .quantize import ONNXRuntimeQuantizeCommand
 
 
+@optimum_cli_subcommand()
 class ONNXRuntimeCommand(BaseOptimumCLICommand):
     COMMAND = CommandInfo(
         name="onnxruntime",

optimum/commands/onnxruntime/optimize.py → optimum/onnxruntime/subpackage/commands/optimize.py

@@ -75,8 +75,8 @@ def parse_args(parser: "ArgumentParser"):
         return parse_args_onnxruntime_optimize(parser)
 
     def run(self):
-        from ...onnxruntime.configuration import AutoOptimizationConfig, ORTConfig
-        from ...onnxruntime.optimization import ORTOptimizer
+        from ...configuration import AutoOptimizationConfig, ORTConfig
+        from ...optimization import ORTOptimizer
 
         if self.args.output == self.args.onnx_model:
             raise ValueError("The output directory must be different than the directory hosting the ONNX model.")

optimum/commands/onnxruntime/quantize.py → optimum/onnxruntime/subpackage/commands/quantize.py

@@ -17,7 +17,7 @@
 from pathlib import Path
 from typing import TYPE_CHECKING
 
-from .. import BaseOptimumCLICommand
+from optimum.commands import BaseOptimumCLICommand
 
 
 if TYPE_CHECKING:
@@ -69,8 +69,8 @@ def parse_args(parser: "ArgumentParser"):
         return parse_args_onnxruntime_quantize(parser)
 
     def run(self):
-        from ...onnxruntime.configuration import AutoQuantizationConfig, ORTConfig
-        from ...onnxruntime.quantization import ORTQuantizer
+        from ...configuration import AutoQuantizationConfig, ORTConfig
+        from ...quantization import ORTQuantizer
 
         if self.args.output == self.args.onnx_model:
             raise ValueError("The output directory must be different than the directory hosting the ONNX model.")

optimum/subpackages.py

@@ -8,6 +8,8 @@
     import importlib_metadata
 from importlib.util import find_spec, module_from_spec
 
+from .utils import is_onnxruntime_available
+
 
 logger = logging.getLogger(__name__)
 
@@ -54,6 +56,11 @@ def load_subpackages():
 
     This module is then in charge of registering the subpackage commands.
     """
+
     OPTIMUM_NAMESPACE = "optimum"
     OPTIMUM_SUBPACKAGE_LOADER = "subpackage"
     load_namespace_modules(OPTIMUM_NAMESPACE, OPTIMUM_SUBPACKAGE_LOADER)
+
+    # Load subpackages from internal modules not explicitly defined as namespace packages
+    if is_onnxruntime_available():
+        from .onnxruntime import subpackage