Overvrite yaml options in terminal

gradient/cli/common.py

@@ -67,7 +67,7 @@ def get_option_name(options_strings):
 class ReadValueFromConfigFile(click.Parameter):
     def handle_parse_result(self, ctx, opts, args):
         config_file = ctx.params.get(OPTIONS_FILE_PARAMETER_NAME)
-        if config_file:
+        if self.should_read_value_from_file(opts, args, config_file):
             with open(config_file) as f:
                 config_data = yaml.load(f, Loader=yaml.FullLoader)
                 option_name = get_option_name(self.opts)
@@ -89,8 +89,15 @@ def handle_parse_result(self, ctx, opts, args):
 
                         opts[self.name] = value
 
-        return super(ReadValueFromConfigFile, self).handle_parse_result(
+        rv = super(ReadValueFromConfigFile, self).handle_parse_result(
             ctx, opts, args)
+        return rv
+
+    def should_read_value_from_file(self, opts, args, config_file):
+        """
+        :rtype: bool
+        """
+        raise NotImplementedError
 
 
 class ColorExtrasInCommandHelpMixin(object):
@@ -127,11 +134,13 @@ def _color_str(self, s):
 
 
 class GradientArgument(ColorExtrasInCommandHelpMixin, ReadValueFromConfigFile, click.Argument):
-    pass
+    def should_read_value_from_file(self, opts, args, config_file):
+        return opts.get(self.name) in (None, ()) and config_file
 
 
 class GradientOption(ColorExtrasInCommandHelpMixin, ReadValueFromConfigFile, click.Option):
-    pass
+    def should_read_value_from_file(self, opts, args, config_file):
+        return self.name not in opts and config_file
 
 
 api_key_option = click.option(
@@ -207,6 +216,7 @@ def options_file(f):
         click.option(
             "--" + OPTIONS_FILE_OPTION_NAME,
             OPTIONS_FILE_PARAMETER_NAME,
+            is_eager=True,
             help="Path to YAML file with predefined options",
             type=click.Path(exists=True, resolve_path=True)
         ),

tests/functional/test_experiments.py

@@ -1,3 +1,4 @@
+import copy
 import os
 import shutil
 import tempfile
@@ -98,6 +99,11 @@ class TestExperimentsCreateSingleNode(object):
         "experiments", "create", "singlenode",
         "--optionsFile",  # path added in test,
     ]
+    FULL_OPTIONS_COMMAND_WITH_OPTIONS_FILE_AND_SOME_VALUES_OVERWRITTEN_IN_LINE = [
+        "experiments", "create", "singlenode",
+        "--name", "some_other_name",
+        "--optionsFile",  # path added in test,
+    ]
     BASIC_OPTIONS_REQUEST = {
         "projectHandle": u"testHandle",
         "container": u"testContainer",
@@ -173,6 +179,29 @@ def test_should_read_options_from_config_file(
                                              data=None)
         assert result.exit_code == 0, result.exc_info
 
+    @mock.patch("gradient.api_sdk.clients.http_client.requests.post")
+    def test_should_read_options_from_config_file_and_overwrite_options_with_values_provided_in_terminal(
+            self, post_patched, create_single_node_experiment_config_path):
+        post_patched.return_value = MockResponse(self.RESPONSE_JSON_200)
+        request_json = copy.deepcopy(self.FULL_OPTIONS_REQUEST)
+        request_json["name"] = "some_other_name"
+        request_json["projectHandle"] = "some_other_project_id"
+
+        command = self.FULL_OPTIONS_COMMAND_WITH_OPTIONS_FILE_AND_SOME_VALUES_OVERWRITTEN_IN_LINE[:]
+        command = command[:] + [create_single_node_experiment_config_path, "--projectId", "some_other_project_id"]
+
+        runner = CliRunner()
+        result = runner.invoke(cli.cli, command)
+
+        assert self.EXPECTED_STDOUT in result.output, result.exc_info
+        post_patched.assert_called_once_with(self.URL_V2,
+                                             headers=EXPECTED_HEADERS_WITH_CHANGED_API_KEY,
+                                             json=request_json,
+                                             params=None,
+                                             files=None,
+                                             data=None)
+        assert result.exit_code == 0, result.exc_info
+
     @mock.patch("gradient.api_sdk.clients.http_client.requests.post")
     def test_should_send_proper_data_and_print_message_when_create_experiment_was_run_with_full_options(self,
                                                                                                         post_patched):
@@ -953,6 +982,11 @@ class TestExperimentsCreateAndStartSingleNode(TestExperimentsCreateSingleNode):
         "experiments", "run", "singlenode",
         "--optionsFile",  # path added in test,
     ]
+    FULL_OPTIONS_COMMAND_WITH_OPTIONS_FILE_AND_SOME_VALUES_OVERWRITTEN_IN_LINE = [
+        "experiments", "run", "singlenode",
+        "--name", "some_other_name",
+        "--optionsFile",  # path added in test,
+    ]
     EXPECTED_STDOUT = "New experiment created and started with ID: sadkfhlskdjh\n"