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				# Copyright (C) 2021 The Software Heritage developers
				# See the AUTHORS file at the top-level directory of this distribution
				# License: GNU General Public License version 3, or any later version
				# See top-level LICENSE file for more information

				"""
				A simple tool to start the swh-graph GRPC server in Java.
				"""

				import subprocess

				import aiohttp.test_utils
				import aiohttp.web

				from swh.graph.config import check_config


				def spawn_java_rpc_server(config, port=None):
				if port is None:
				port = aiohttp.test_utils.unused_port()
				config = check_config(config or {})
				cmd = [
				"java",
				"-cp",
				config["classpath"],
				*config["java_tool_options"].split(),
				"org.softwareheritage.graph.rpc.GraphServer",
				"--port",
				str(port),
				config["graph"]["path"],
				]
				server = subprocess.Popen(cmd)
				return server, port