complex info handle

kvmd/apps/kvmd/info/system.py

@@ -0,0 +1,80 @@
+# ========================================================================== #
+#                                                                            #
+#    KVMD - The main Pi-KVM daemon.                                          #
+#                                                                            #
+#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+# ========================================================================== #
+
+
+import os
+import asyncio
+import platform
+
+from typing import List
+from typing import Dict
+
+from ....logging import get_logger
+
+from .... import aioproc
+
+from .... import __version__
+
+from .base import BaseInfoSubmanager
+
+
+# =====
+class SystemInfoSubmanager(BaseInfoSubmanager):
+    def __init__(self, streamer_cmd: List[str]) -> None:
+        self.__streamer_cmd = streamer_cmd
+
+    async def get_state(self) -> Dict:
+        streamer_info = await self.__get_streamer_info()
+        uname_info = platform.uname()  # Uname using the internal cache
+        return {
+            "kvmd": {"version": __version__},
+            "streamer": streamer_info,
+            "kernel": {
+                field: getattr(uname_info, field)
+                for field in ["system", "release", "version", "machine"]
+            },
+        }
+
+    # =====
+
+    async def __get_streamer_info(self) -> Dict:
+        version = ""
+        features: Dict[str, bool] = {}
+        try:
+            path = self.__streamer_cmd[0]
+            ((_, version), (_, features_text)) = await asyncio.gather(
+                aioproc.read_process([path, "--version"], err_to_null=True),
+                aioproc.read_process([path, "--features"], err_to_null=True),
+            )
+        except Exception:
+            get_logger(0).exception("Can't get streamer info")
+        else:
+            try:
+                for line in features_text.split("\n"):
+                    (status, name) = map(str.strip, line.split(" "))
+                    features[name] = (status == "+")
+            except Exception:
+                get_logger(0).exception("Can't parse streamer features")
+        return {
+            "app": os.path.basename(path),
+            "version": version,
+            "features": features,
+        }