added forkmon

src/forkmon/forkmon_launcher.star

+load("github.com/kurtosis-tech/eth2-module/src/shared_utils/shared_utils.star", "new_port_spec", "new_template_and_data", "path_join")
+
+
+SERVICE_ID = "forkmon"
+IMAGE_NAME = "ralexstokes/ethereum_consensus_monitor:latest"
+
+HTTP_PORT_ID     = "http"
+HTTP_PORT_NUMBER = uint16(80)
+HTTP_PROTOCOL = "TCP"
+
+FORKMON_CONFIG_FILENAME = "forkmon-config.toml"
+
+FORKMON_CONFIG_MOUNT_DIRPATH_ON_SERVICE = "/config"
+
+USED_PORTS = {
+	HTTP_PORT_ID: new_port_spec(HTTP_PORT_NUMBER, HTTP_PROTOCOL)
+}
+
+
+def launch_forkmon(
+		config_template,
+		cl_client_contexts,
+		genesis_unix_timestamp,
+		seconds_per_slot,
+		slots_per_epoch
+	):
+	
+	all_cl_client_info = []
+	for client in cl_client_contexts:
+		client_info = new_cl_client_info(client.ip_addr, client.http_port_num)
+		all_cl_client_info.append(client_info)
+
+	template_data = new_config_template_data(HTTP_PORT_NUMBER, all_cl_client_info, seconds_per_slot, slots_per_epoch, genesis_unix_timestamp)
+	template_data_json = json.encode(template_data)
+
+	template_and_data = new_template_and_data(config_template, template_data_json)
+	template_and_data_by_rel_dest_filepath[FORKMON_CONFIG_FILENAME] = template_and_data
+
+	config_files_artifact_uuid = render_templates(template_and_data_by_rel_dest_filepath)
+
+	service_config = get_service_config(config_files_artifact_uuid)
+
+	add_service(SERVICE_ID, service_config)
+
+
+def get_service_config(config_files_artifact_uuid):
+	config_file_path = path_join(FORKMON_CONFIG_MOUNT_DIRPATH_ON_SERVICE, FORKMON_CONFIG_FILENAME)
+	return struct(
+		container_image_name = IMAGE_NAME,
+		used_ports = USED_PORTS,
+		files_artifact_mount_dirpaths = {
+			config_files_artifact_uuid: FORKMON_CONFIG_MOUNT_DIRPATH_ON_SERVICE,
+		}
+		cmd_args = ["--config-path", config_file_path]
+	)
+
+
+def new_config_template_data():
+	return {
+		"ListenPortNum": listen_port_num,
+		"CLClientInfo": cl_client_info,
+		"SecondsPerSlot": seconds_per_slot,
+		"SlotsPerEpoch": slots_per_epoch,
+		"GenesisUnixTimestamp": genesis_unix_timestamp,
+	}
+
+
+def new_cl_client_info(ip_addr, port_num):
+	return {
+		"IPAddr": ip_addr,
+		"PortNum": port_num
+	}
\ No newline at end of file