mirror of
https://github.com/thingsboard/thingsboard-gateway
synced 2025-10-26 22:31:42 +08:00
220 lines
11 KiB
Python
220 lines
11 KiB
Python
# Copyright 2020. ThingsBoard
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from base64 import b64encode, b64decode
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from simplejson import dumps, loads, dump
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from yaml import safe_dump
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from time import time, sleep
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from logging import getLogger
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from os import remove
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from thingsboard_gateway.gateway.tb_client import TBClient
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from thingsboard_gateway.gateway.tb_logger import TBLoggerHandler
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log = getLogger("service")
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class RemoteConfigurator:
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def __init__(self, gateway, config):
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self.__gateway = gateway
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self.__new_configuration = None
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self.__apply_timeout = 10
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self.__old_tb_client = None
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self.__old_connectors_configs = {}
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self.__new_connectors_configs = {}
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self.__old_general_configuration_file = config
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self.__new_general_configuration_file = {}
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self.__old_event_storage = None
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self.__new_event_storage = None
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def process_configuration(self, configuration):
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try:
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decoded_configuration = b64decode(configuration)
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log.info("Remote configuration received: \n %s", decoded_configuration)
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self.__new_configuration = loads(decoded_configuration)
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self.__old_connectors_configs = self.__gateway._connectors_configs
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self.__new_general_configuration_file = self.__new_configuration.get("thingsboard")
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self.__process_connectors_configuration()
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self.send_current_configuration()
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except Exception as e:
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log.exception(e)
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def send_current_configuration(self):
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current_configuration = {}
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for connector in self.__gateway._connectors_configs:
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log.debug(connector)
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if current_configuration.get(connector) is None:
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current_configuration[connector] = []
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for config_file in self.__gateway._connectors_configs[connector]:
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for config in config_file:
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current_configuration[connector].append(config_file[config])
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current_configuration["thingsboard"] = self.__old_general_configuration_file
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encoded_current_configuration = b64encode(dumps(current_configuration).encode())
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self.__gateway.tb_client.client.send_attributes(
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{"current_configuration": encoded_current_configuration.decode("UTF-8")})
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def __process_connectors_configuration(self):
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log.debug("Processing remote connectors configuration...")
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self.__prepare_connectors_configuration()
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self.__apply_storage_configuration()
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if self.__apply_new_connectors_configuration():
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self.__write_new_configuration_files()
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if self.__safe_apply_connection_configuration():
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log.info("Remote configuration has been applied.")
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with open(self.__gateway._config_dir + "tb_gateway.yaml", "w") as general_configuration_file:
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safe_dump(self.__new_general_configuration_file, general_configuration_file)
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self.__old_connectors_configs = {}
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self.__new_connectors_configs = {}
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self.__old_general_configuration_file = self.__new_general_configuration_file
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self.__new_general_configuration_file = {}
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else:
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log.error("A remote general configuration applying has been failed.")
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self.__old_connectors_configs = {}
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self.__new_connectors_configs = {}
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self.__new_general_configuration_file = {}
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return
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def __prepare_connectors_configuration(self):
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self.__new_connectors_configs = {}
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try:
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for connector_type in {connector_type for connector_type in self.__new_configuration if
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"thingsboard" not in connector_type}:
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connector_number = 0
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for connector in self.__new_configuration[connector_type]:
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log.debug("Processing remote configuration for connector with type \"%s\" and config \"%s\".",
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connector_type, dumps(connector))
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if not self.__new_connectors_configs.get(connector_type):
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self.__new_connectors_configs[connector_type] = []
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self.__new_connectors_configs[connector_type].append(
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{connector_type.lower().replace(" ", "") + str(connector_number) + ".json": connector})
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connector_number += 1
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log.debug("Saved configuration for connectors: %s", ', '.join(con for con in self.__new_connectors_configs))
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except Exception as e:
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log.exception(e)
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def __apply_new_connectors_configuration(self):
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try:
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self.__gateway._connectors_configs = self.__new_connectors_configs
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for connector_name in self.__gateway.available_connectors:
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self.__gateway.available_connectors[connector_name].close()
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self.__gateway._connect_with_connectors()
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log.debug("New connectors configuration has been applied")
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self.__old_connectors_configs = {}
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return True
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except Exception as e:
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self.__gateway._connectors_configs = self.__old_connectors_configs
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for connector_name in self.__gateway.available_connectors:
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self.__gateway.available_connectors[connector_name].close()
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self.__gateway._connect_with_connectors()
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log.exception(e)
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return False
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def __write_new_configuration_files(self):
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try:
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general_edited = True
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self.__new_general_configuration_file = self.__new_general_configuration_file if general_edited else self.__old_general_configuration_file
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self.__new_connectors_configs = self.__new_connectors_configs if self.__new_connectors_configs else self.__new_connectors_configs
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# self.__new_general_configuration_file["connectors"] = []
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new_connectors_files = []
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for connector_type in self.__new_connectors_configs:
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for connector_config_section in self.__new_connectors_configs[connector_type]:
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for connector_file in connector_config_section:
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connector_config = connector_config_section[connector_file]
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# connector_name = connector_config["name"] if connector_config.get("name") else \
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# connector_config["broker"]["name"] if connector_config.get("broker") else \
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# connector_config["server"]["name"] if connector_config.get("server") else None
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# self.__new_general_configuration_file["connectors"].append(
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# {
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# "name": connector_name,
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# "type": connector_type,
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# "configuration": connector_file
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# }
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# )
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with open(self.__gateway._config_dir + connector_file, "w") as config_file:
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dump(connector_config, config_file, sort_keys=True, indent=2)
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new_connectors_files.append(connector_file)
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log.debug("Saving new configuration for \"%s\" connector to file \"%s\"", connector_type,
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connector_file)
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for old_connector_type in self.__old_connectors_configs:
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for old_connector_config_section in self.__old_connectors_configs[old_connector_type]:
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for old_connector_file in old_connector_config_section:
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if old_connector_file not in new_connectors_files:
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remove(self.__gateway._config_dir + old_connector_file)
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log.debug("Remove old configuration file \"%s\" for \"%s\" connector ", old_connector_file,
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old_connector_type)
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except Exception as e:
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log.exception(e)
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def __safe_apply_connection_configuration(self):
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apply_start = time() * 1000
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self.__old_tb_client = self.__gateway.tb_client
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try:
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self.__old_tb_client.pause()
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except Exception as e:
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log.exception(e)
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self.__revert_configuration()
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return False
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# connection_state = False
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try:
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tb_client = TBClient(self.__new_general_configuration_file["thingsboard"])
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tb_client.connect()
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except Exception as e:
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log.exception(e)
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self.__revert_configuration()
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return False
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self.__gateway.tb_client = tb_client
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try:
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connection_state = False
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while time() * 1000 - apply_start < self.__apply_timeout * 1000 and not connection_state:
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connection_state = self.__gateway.tb_client.is_connected()
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sleep(.1)
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if not connection_state:
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self.__revert_configuration()
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log.info("The gateway cannot connect to the ThingsBoard server with a new configuration.")
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return False
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else:
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self.__old_tb_client.stop()
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self.__gateway.tb_client.client.gw_set_server_side_rpc_request_handler(
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self.__gateway._rpc_request_handler)
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self.__gateway.tb_client.client.set_server_side_rpc_request_handler(self.__gateway._rpc_request_handler)
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self.__gateway.tb_client.client.subscribe_to_all_attributes(self.__gateway._attribute_update_callback)
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self.__gateway.tb_client.client.gw_subscribe_to_all_attributes(
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self.__gateway._attribute_update_callback)
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return True
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except Exception as e:
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log.exception(e)
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self.__revert_configuration()
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return False
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def __apply_storage_configuration(self):
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if self.__old_general_configuration_file["storage"] != self.__new_general_configuration_file["storage"]:
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self.__old_event_storage = self.__gateway._event_storage
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try:
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self.__gateway._event_storage = self.__gateway._event_storage_types[
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self.__new_general_configuration_file["storage"]["type"]](
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self.__new_general_configuration_file["storage"])
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self.__old_event_storage = None
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except Exception as e:
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log.exception(e)
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self.__gateway._event_storage = self.__old_event_storage
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def __revert_configuration(self):
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log.info("Remote general configuration will be restored.")
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self.__new_general_configuration_file = self.__old_general_configuration_file
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self.__gateway.tb_client.disconnect()
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self.__gateway.tb_client.stop()
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self.__gateway.tb_client = self.__old_tb_client
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self.__gateway.tb_client.connect()
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self.__gateway.tb_client.unpause()
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