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BUG=b:233893248
TEST=CQ

Change-Id: I66591d7a738d241aed3290138c0f68065ab10a6d
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/chromite/+/3879174
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Tested-by: Alex Klein <saklein@chromium.org>
diff --git a/api/api_config.py b/api/api_config.py
index e04cbf9..7a61ef4 100644
--- a/api/api_config.py
+++ b/api/api_config.py
@@ -8,146 +8,154 @@
 
 
 class Error(Exception):
-  """Base error class for the module."""
+    """Base error class for the module."""
 
 
 class UnknownCallTypeEnumValue(Error):
-  """Thrown when the call type enum value in proto is not configured here."""
+    """Thrown when the call type enum value in proto is not configured here."""
 
 
 class ApiConfig(object):
-  """API Config class."""
-  # Call type constants.
-  CALL_TYPE_EXECUTE = 1
-  CALL_TYPE_VALIDATE_ONLY = 2
-  CALL_TYPE_MOCK_SUCCESS = 3
-  CALL_TYPE_MOCK_FAILURE = 4
-  CALL_TYPE_MOCK_INVALID = 5
+    """API Config class."""
 
-  # Maps the proto enum to the type constants.
-  TYPE_ENUM_MAP = {
-      build_api_config_pb2.CALL_TYPE_NONE: CALL_TYPE_EXECUTE,
-      build_api_config_pb2.CALL_TYPE_EXECUTE: CALL_TYPE_EXECUTE,
-      build_api_config_pb2.CALL_TYPE_VALIDATE_ONLY: CALL_TYPE_VALIDATE_ONLY,
-      build_api_config_pb2.CALL_TYPE_MOCK_SUCCESS: CALL_TYPE_MOCK_SUCCESS,
-      build_api_config_pb2.CALL_TYPE_MOCK_FAILURE: CALL_TYPE_MOCK_FAILURE,
-      build_api_config_pb2.CALL_TYPE_MOCK_INVALID: CALL_TYPE_MOCK_INVALID,
-  }
+    # Call type constants.
+    CALL_TYPE_EXECUTE = 1
+    CALL_TYPE_VALIDATE_ONLY = 2
+    CALL_TYPE_MOCK_SUCCESS = 3
+    CALL_TYPE_MOCK_FAILURE = 4
+    CALL_TYPE_MOCK_INVALID = 5
 
-  # Maps the type constants to the proto enums.
-  ENUM_TYPE_MAP = {
-      CALL_TYPE_EXECUTE: build_api_config_pb2.CALL_TYPE_EXECUTE,
-      CALL_TYPE_VALIDATE_ONLY: build_api_config_pb2.CALL_TYPE_VALIDATE_ONLY,
-      CALL_TYPE_MOCK_SUCCESS: build_api_config_pb2.CALL_TYPE_MOCK_SUCCESS,
-      CALL_TYPE_MOCK_FAILURE: build_api_config_pb2.CALL_TYPE_MOCK_FAILURE,
-      CALL_TYPE_MOCK_INVALID: build_api_config_pb2.CALL_TYPE_MOCK_INVALID,
-  }
+    # Maps the proto enum to the type constants.
+    TYPE_ENUM_MAP = {
+        build_api_config_pb2.CALL_TYPE_NONE: CALL_TYPE_EXECUTE,
+        build_api_config_pb2.CALL_TYPE_EXECUTE: CALL_TYPE_EXECUTE,
+        build_api_config_pb2.CALL_TYPE_VALIDATE_ONLY: CALL_TYPE_VALIDATE_ONLY,
+        build_api_config_pb2.CALL_TYPE_MOCK_SUCCESS: CALL_TYPE_MOCK_SUCCESS,
+        build_api_config_pb2.CALL_TYPE_MOCK_FAILURE: CALL_TYPE_MOCK_FAILURE,
+        build_api_config_pb2.CALL_TYPE_MOCK_INVALID: CALL_TYPE_MOCK_INVALID,
+    }
 
-  # The valid call types.
-  _VALID_CALL_TYPES = tuple(ENUM_TYPE_MAP.keys())
+    # Maps the type constants to the proto enums.
+    ENUM_TYPE_MAP = {
+        CALL_TYPE_EXECUTE: build_api_config_pb2.CALL_TYPE_EXECUTE,
+        CALL_TYPE_VALIDATE_ONLY: build_api_config_pb2.CALL_TYPE_VALIDATE_ONLY,
+        CALL_TYPE_MOCK_SUCCESS: build_api_config_pb2.CALL_TYPE_MOCK_SUCCESS,
+        CALL_TYPE_MOCK_FAILURE: build_api_config_pb2.CALL_TYPE_MOCK_FAILURE,
+        CALL_TYPE_MOCK_INVALID: build_api_config_pb2.CALL_TYPE_MOCK_INVALID,
+    }
 
-  def __init__(self, call_type=CALL_TYPE_EXECUTE, log_path=None):
-    assert call_type in self._VALID_CALL_TYPES
-    self._call_type = call_type
-    # Explicit `or None` to simplify proto default empty string.
-    self.log_path = log_path or None
+    # The valid call types.
+    _VALID_CALL_TYPES = tuple(ENUM_TYPE_MAP.keys())
 
-  def __eq__(self, other):
-    if self.__class__ is other.__class__:
-      return self.__dict__ == other.__dict__
+    def __init__(self, call_type=CALL_TYPE_EXECUTE, log_path=None):
+        assert call_type in self._VALID_CALL_TYPES
+        self._call_type = call_type
+        # Explicit `or None` to simplify proto default empty string.
+        self.log_path = log_path or None
 
-    return NotImplemented
+    def __eq__(self, other):
+        if self.__class__ is other.__class__:
+            return self.__dict__ == other.__dict__
 
-  __hash__ = NotImplemented
+        return NotImplemented
 
-  @property
-  def do_validation(self):
-    # We skip validation for all mock calls, so do validation when it's
-    # anything but a mocked call.
-    return not (self.mock_call or self.mock_error or self.mock_invalid)
+    __hash__ = NotImplemented
 
-  @property
-  def validate_only(self):
-    return self._call_type == self.CALL_TYPE_VALIDATE_ONLY
+    @property
+    def do_validation(self):
+        # We skip validation for all mock calls, so do validation when it's
+        # anything but a mocked call.
+        return not (self.mock_call or self.mock_error or self.mock_invalid)
 
-  @property
-  def mock_call(self):
-    return self._call_type == self.CALL_TYPE_MOCK_SUCCESS
+    @property
+    def validate_only(self):
+        return self._call_type == self.CALL_TYPE_VALIDATE_ONLY
 
-  @property
-  def mock_error(self):
-    return self._call_type == self.CALL_TYPE_MOCK_FAILURE
+    @property
+    def mock_call(self):
+        return self._call_type == self.CALL_TYPE_MOCK_SUCCESS
 
-  @property
-  def mock_invalid(self):
-    return self._call_type == self.CALL_TYPE_MOCK_INVALID
+    @property
+    def mock_error(self):
+        return self._call_type == self.CALL_TYPE_MOCK_FAILURE
 
-  @property
-  def run_endpoint(self) -> bool:
-    """Run the endpoint when none of the special calls are invoked."""
-    return (not self.validate_only and not self.mock_call and
-            not self.mock_error and not self.mock_invalid)
+    @property
+    def mock_invalid(self):
+        return self._call_type == self.CALL_TYPE_MOCK_INVALID
 
-  def get_proto(
-      self,
-      for_inside_execution: bool = True
-  ) -> build_api_config_pb2.BuildApiConfig:
-    """Get the config as a proto.
+    @property
+    def run_endpoint(self) -> bool:
+        """Run the endpoint when none of the special calls are invoked."""
+        return (
+            not self.validate_only
+            and not self.mock_call
+            and not self.mock_error
+            and not self.mock_invalid
+        )
 
-    Args:
-      for_inside_execution: Allows avoiding propagating configs that are
-        irrelevant for the build api process executed inside the chroot.
-        Enabled by default.
-    """
-    config = build_api_config_pb2.BuildApiConfig()
-    config.call_type = self.ENUM_TYPE_MAP[self._call_type]
+    def get_proto(
+        self, for_inside_execution: bool = True
+    ) -> build_api_config_pb2.BuildApiConfig:
+        """Get the config as a proto.
 
-    if not for_inside_execution:
-      # Add values not needed when reexecuting.
-      config.log_path = self.log_path
+        Args:
+          for_inside_execution: Allows avoiding propagating configs that are
+            irrelevant for the build api process executed inside the chroot.
+            Enabled by default.
+        """
+        config = build_api_config_pb2.BuildApiConfig()
+        config.call_type = self.ENUM_TYPE_MAP[self._call_type]
 
-    return config
+        if not for_inside_execution:
+            # Add values not needed when reexecuting.
+            config.log_path = self.log_path
+
+        return config
 
 
 def build_config_from_proto(
-    config_proto: build_api_config_pb2.BuildApiConfig) -> ApiConfig:
-  """Build an ApiConfig instance from a BuildApiConfig message.
+    config_proto: build_api_config_pb2.BuildApiConfig,
+) -> ApiConfig:
+    """Build an ApiConfig instance from a BuildApiConfig message.
 
-  Args:
-    config_proto: The proto config.
-  """
+    Args:
+      config_proto: The proto config.
+    """
 
-  if config_proto.call_type not in ApiConfig.TYPE_ENUM_MAP:
-    raise UnknownCallTypeEnumValue('The given protobuf call_type value is not '
-                                   'configured in api_config.')
-  return ApiConfig(
-      call_type=ApiConfig.TYPE_ENUM_MAP[config_proto.call_type],
-      log_path=config_proto.log_path)
+    if config_proto.call_type not in ApiConfig.TYPE_ENUM_MAP:
+        raise UnknownCallTypeEnumValue(
+            "The given protobuf call_type value is not "
+            "configured in api_config."
+        )
+    return ApiConfig(
+        call_type=ApiConfig.TYPE_ENUM_MAP[config_proto.call_type],
+        log_path=config_proto.log_path,
+    )
 
 
 class ApiConfigMixin(object):
-  """Mixin to add an API Config factory properties.
+    """Mixin to add an API Config factory properties.
 
-  This is meant to be used for tests to make these configs more uniform across
-  all the tests since there's very little to change anyway.
-  """
+    This is meant to be used for tests to make these configs more uniform across
+    all the tests since there's very little to change anyway.
+    """
 
-  @property
-  def api_config(self):
-    return ApiConfig()
+    @property
+    def api_config(self):
+        return ApiConfig()
 
-  @property
-  def validate_only_config(self):
-    return ApiConfig(call_type=ApiConfig.CALL_TYPE_VALIDATE_ONLY)
+    @property
+    def validate_only_config(self):
+        return ApiConfig(call_type=ApiConfig.CALL_TYPE_VALIDATE_ONLY)
 
-  @property
-  def no_validate_config(self):
-    return self.mock_call_config
+    @property
+    def no_validate_config(self):
+        return self.mock_call_config
 
-  @property
-  def mock_call_config(self):
-    return ApiConfig(call_type=ApiConfig.CALL_TYPE_MOCK_SUCCESS)
+    @property
+    def mock_call_config(self):
+        return ApiConfig(call_type=ApiConfig.CALL_TYPE_MOCK_SUCCESS)
 
-  @property
-  def mock_error_config(self):
-    return ApiConfig(call_type=ApiConfig.CALL_TYPE_MOCK_FAILURE)
+    @property
+    def mock_error_config(self):
+        return ApiConfig(call_type=ApiConfig.CALL_TYPE_MOCK_FAILURE)