cli command for calling validate entrypoint

Author: sowmyasris

fedn/cli/run_cmd.py

@@ -43,6 +43,38 @@ def run_cmd(ctx):
     """:param ctx:
     """
     pass
+@run_cmd.command("validate")
+@click.option("-p", "--path", required=True, help="Path to package directory containing fedn.yaml")
+@click.option("-i", "--input", required=True, help="Path to input model" )
+@click.option("-o", "--output", required=True,help="Path to write the output JSON containing validation metrics")
+@click.pass_context
+def validate_cmd(ctx, path,input,output):
+    """Execute 'validate' entrypoint in fedn.yaml.
+
+    :param ctx:
+    :param path: Path to folder containing fedn.yaml
+    :type path: str
+    """
+    path = os.path.abspath(path)
+    yaml_file = os.path.join(path, "fedn.yaml")
+    if not os.path.exists(yaml_file):
+        logger.error(f"Could not find fedn.yaml in {path}")
+        exit(-1)
+
+    config = _read_yaml_file(yaml_file)
+    # Check that validate is defined in fedn.yaml under entry_points
+    if "validate" not in config["entry_points"]:
+        logger.error("No validate command defined in fedn.yaml")
+        exit(-1)
+
+    dispatcher = Dispatcher(config, path)
+    _ = dispatcher._get_or_create_python_env()
+    dispatcher.run_cmd("validate {} {}".format(input, output))
+
+    # delete the virtualenv
+    if dispatcher.python_env_path:
+        logger.info(f"Removing virtualenv {dispatcher.python_env_path}")
+        shutil.rmtree(dispatcher.python_env_path)
 @run_cmd.command("train")
 @click.option("-p", "--path", required=True, help="Path to package directory containing fedn.yaml")
 @click.option("-i", "--input", required=True, help="Path to input model parameters" )