osmium: added

scripts/nixos-updater.py

@@ -0,0 +1,90 @@
+import requests
+import os
+import socket
+import json
+from os import path as osp
+from dataclasses import dataclass
+
+"""
+This updater consists of several parts: 
+
+- Update checker: Check an url for update (if outPath is different from /run/current-system or some specified profile) or maybe use timestamp for update
+- Nix copy --from: copy from remote. Need to specify remote url.
+- Create a symlink: /run/next-system -> <new system derivation>
+- Listen for POST request to trigger system switch (optional)
+"""
+
+
+@dataclass
+class GarnixConfig:
+    token: str
+
+
+@dataclass
+class Config:
+    check_type: str
+    check_url: str
+    remote_url: str
+    garnix: GarnixConfig
+    hostname: str = socket.gethostname()
+
+
+class Nix:
+    def __init__(self, args):
+        self.args = args
+
+    def copy_from_remote(self):
+        # run nix copy with subprocess
+        pass
+
+    def eval(self):
+
+
+class Updater:
+    def __init__(self, config: Config):
+        self.config = config
+
+        # TODO: Make this configurable
+        self.current_drv = os.readlink("/run/current-system")
+        self.next_dev = None
+
+    # checkers take an url and returns the outPath of the latest success build
+    def garnix_checker(self) -> str:
+        domain = "garnix.io"
+        build_endpoint = "/api/build/commit"
+
+        # Latest commit from git
+
+        # Check build status of this commit
+        resp = requests.get(
+            f"https://{domain}{build_endpoint}/40b1e9ff23aaa5f555420dd22414c3f137a02cfe"
+        )
+        # Raise error if status code is not valid
+
+        # Fetch outPath from eval endpoint
+        # TODO: In theory, this could be done by parsing raw log from garnix.
+
+        # Try to evaluate locally if eval endpoint is not configured
+
+        resp = resp.json()
+        # TODO
+        return "null"
+
+    def hydra_checker(self) -> str:
+        # TODO
+        return "null"
+
+    # Check for update
+    def poll(self) -> str | None:
+        cfg = self.config
+        if cfg.check_type == "garnix":
+            pass
+        elif cfg.check_type == "hydra":
+            pass
+        else:
+            pass
+        pass
+
+
+if __name__ == "__main__":
+    pass