Experimental support for async method calls

1 files changed, 55 insertions, 0 deletions

diff --git a/backend/src/plugin/plugin.py b/backend/src/plugin/plugin.py
new file mode 100644
index 00000000..b7d0a44a
--- /dev/null
+++ b/backend/src/plugin/plugin.py
@@ -0,0 +1,55 @@
+from json import dumps, load, loads
+from logging import getLogger
+from os import path
+
+from .sandboxed_plugin import SandboxedPlugin
+from .method_call_request import MethodCallRequest
+from ..localplatform.localsocket import LocalSocket
+
+from typing import Any, Dict
+
+class PluginWrapper:
+    def __init__(self, file: str, plugin_directory: str, plugin_path: str) -> None:
+        self.file = file
+        self.plugin_path = plugin_path
+        self.plugin_directory = plugin_directory
+
+        self.version = None
+
+        json = load(open(path.join(plugin_path, plugin_directory, "plugin.json"), "r", encoding="utf-8"))
+        if path.isfile(path.join(plugin_path, plugin_directory, "package.json")):
+            package_json = load(open(path.join(plugin_path, plugin_directory, "package.json"), "r", encoding="utf-8"))
+            self.version = package_json["version"]
+
+        self.name = json["name"]
+        self.author = json["author"]
+        self.flags = json["flags"]
+        self.passive = not path.isfile(self.file)
+
+        self.log = getLogger("plugin")
+        self.method_call_requests: Dict[str, MethodCallRequest] = {}
+        self.sandboxed_plugin = SandboxedPlugin(self.name, self.passive, self.flags, self.file, self.plugin_directory, self.plugin_path, self.version, self.author)
+        #TODO: Maybe somehow make LocalSocket not require on_new_message to make this more clear
+        self.socket = LocalSocket(self.sandboxed_plugin.on_new_message)
+        self.sandboxed_plugin.start(self.socket)
+
+    def __str__(self) -> str:
+        return self.name
+    
+    async def response_listener(self):
+        while True:
+            line = await self.socket.read_single_line()
+            if line != None:
+                res = loads(line)
+                self.method_call_requests.pop(res["id"]).set_result(res)
+
+    async def execute_method(self, method_name: str, kwargs: Dict[Any, Any]):
+        if self.passive:
+            raise RuntimeError("This plugin is passive (aka does not implement main.py)")
+        
+        request = MethodCallRequest()
+        await self.socket.get_socket_connection()
+        await self.socket.write_single_line(dumps({ "method": method_name, "args": kwargs, "id": request.id }, ensure_ascii=False))
+        self.method_call_requests[request.id] = request
+
+        return await request.wait_for_result()
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