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import importlib
import schedule
import time
from types import ModuleType
from typing import Any
from app.Item import Item
from app.PluginInterface import PluginInterface
from app.AggroConfig import AggroConfig
from app.utils import get_param
class PluginManager:
def __init__(self, config: AggroConfig) -> None:
self._plugins: dict[str, Any] = {}
self.plugin_instances: dict[str, PluginInterface] = {}
self.running = False
self.config = config
def load_plugin(self, plugin_name: str) -> None:
module: ModuleType = importlib.import_module(f"app.{plugin_name}")
plugin_class = module.Plugin
self._plugins[plugin_name] = plugin_class
def propagate(self, id: str, items: list[Item]):
next_nodes: list[str]
if id not in self.config.graph:
next_nodes = []
else:
next_nodes = self.config.graph[id]
for next_node_id in next_nodes:
self.run_plugin_job(next_node_id, items)
def run_plugin_job(self, id: str, items: list[Item] = []):
if not self.running:
return
plugin: PluginInterface = self.plugin_instances[id]
ret_items: list[Item] = plugin.process(items)
self.propagate(id, ret_items)
def build_plugin_instances(self):
self.graph: dict[str, PluginInterface] = {}
for id in self.config.plugins:
params: dict[str, str] = self.config.plugins[id]
plugin_name = get_param("plugin", params)
trigger_type = get_param("trigger_type", params)
if plugin_name not in self._plugins:
self.load_plugin(plugin_name)
match trigger_type:
case "schedule":
schedule_expr = get_param("schedule_expr", params)
job: schedule.Job = eval(schedule_expr, {"schedule": schedule})
job.do(self.run_plugin_job, id) # type: ignore
case "input_change":
pass
case _:
raise Exception("unknown trigger_type: " + trigger_type)
PluginClass: Any = self._plugins[plugin_name]
plugin: PluginInterface = PluginClass(id=id, params=params)
self.plugin_instances[id] = plugin
def run(self) -> None:
self.running = True
while self.running:
schedule.run_pending()
time.sleep(1)
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