TP44 Etappe 2 Teil A: Seeder für die zwei fehlenden IPAM-Prefixe

nautobot/tp44-ipam-prefixes.py — idempotenter get-or-create für
10.40.0.0/16 (container, Route bf-core-mesh) und 10.101.0.0/24
(network, Route fm.emsenhuber.net). Dry-Run default, --commit schreibt.
Nach dem Anlegen zieht tp44-cf-estate-seed.py Schritt [7] die zwei
cloud-network-prefix-assignments automatisch ein. Muster:
ingest-baseline.py / tp37-substrat-seed.py. Noch nicht gegen Nautobot
ausgeführt (nur Dry-Run verifiziert).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

nautobot/tp44-ipam-prefixes.py

@@ -0,0 +1,119 @@
+#!/usr/bin/env python3
+"""
+TP44 Etappe 2 Teil A — die zwei fehlenden IPAM-Prefixe der CF-CloudNetworks anlegen.
+
+Zwei CloudNetworks (tp44-cf-estate-seed.py) tragen eine Route, die der Seeder als
+cloud-network-prefix-assignment verknuepfen wuerde -- aber nur, wenn der Prefix in
+IPAM existiert (dort Schritt [7], sonst "~ Prefix ... nicht in IPAM"):
+
+  10.40.0.0/16   -> bf-core-mesh (WARP-Connector auf crs326-core, TP16.1)  [container]
+  10.101.0.0/24  -> fm.emsenhuber.net (Standort FM, cloudflared-Tunnel)     [network]
+
+Idempotenter get-or-create (Dry-Run default). Nach dem --commit den Seeder erneut
+laufen lassen -- er haengt die zwei Assignments dann automatisch ein.
+
+  10.40.0.0/16 als 'container', weil die VLAN-/24 (10.40.10/20/30/...) aus
+  ingest-baseline.py bereits als Prefixe existieren; Nautobot nistet sie
+  automatisch darunter (rein hierarchisch, nicht-destruktiv).
+
+Token-Quelle: docs/nas-vlan20/stacks/210-nautobot.yml (gitignored),
+Schluessel NAUTOBOT_SUPERUSER_API_TOKEN.
+
+Aufruf:
+  python3 nautobot/tp44-ipam-prefixes.py            # Dry-Run (default)
+  python3 nautobot/tp44-ipam-prefixes.py --commit   # legt an
+"""
+import json
+import os
+import re
+import sys
+import urllib.request
+import urllib.parse
+import urllib.error
+from pathlib import Path
+
+NB = os.environ.get("NAUTOBOT_URL", "http://10.40.20.30:8080")
+REPO = Path(__file__).resolve().parent.parent
+YML = REPO / "docs" / "nas-vlan20" / "stacks" / "210-nautobot.yml"
+COMMIT = "--commit" in sys.argv
+
+
+def load_token() -> str:
+    for line in YML.read_text().splitlines():
+        m = re.search(r"NAUTOBOT_SUPERUSER_API_TOKEN[=:]\s*([^\s\"']+)", line)
+        if m:
+            return m.group(1)
+    sys.exit(f"NAUTOBOT_SUPERUSER_API_TOKEN nicht in {YML} gefunden")
+
+
+TOKEN = load_token()
+HDRS = {"Authorization": f"Token {TOKEN}", "Accept": "application/json",
+        "Content-Type": "application/json"}
+
+
+def req(method: str, path: str, body=None):
+    url = f"{NB}{path}"
+    data = json.dumps(body).encode() if body is not None else None
+    r = urllib.request.Request(url, data=data, headers=HDRS, method=method)
+    try:
+        with urllib.request.urlopen(r, timeout=20) as resp:
+            return resp.status, json.loads(resp.read().decode() or "{}")
+    except urllib.error.HTTPError as e:
+        return e.code, json.loads(e.read().decode() or "{}")
+
+
+def find(endpoint: str, params: dict, match_key: str, match_val: str):
+    q = urllib.parse.urlencode(dict(params, depth=0))
+    st, d = req("GET", f"/api/{endpoint}/?{q}")
+    for row in d.get("results", []):
+        if row.get(match_key) == match_val:
+            return row
+    return None
+
+
+def status_id(name: str):
+    return find("extras/statuses", {"name": name}, "name", name)["id"]
+
+
+def namespace_id(name: str):
+    return find("ipam/namespaces", {"name": name}, "name", name)["id"]
+
+
+# ---------------------------------------------------------------- Inventar
+# (prefix, type, description)
+PREFIXES = [
+    ("10.40.0.0/16", "container",
+     "BF-Supernet; Route des CF WARP-Connectors bf-core-mesh (crs326-core, TP16.1)"),
+    ("10.101.0.0/24", "network",
+     "Standort FM; Route des CF cloudflared-Tunnels fm.emsenhuber.net"),
+]
+
+
+def main():
+    print(f"== TP44 IPAM-Prefixe  ({'COMMIT' if COMMIT else 'DRY-RUN'})  @ {NB} ==")
+    st_active = status_id("Active")
+    ns_global = namespace_id("Global")
+
+    for prefix, ptype, desc in PREFIXES:
+        existing = find("ipam/prefixes", {"prefix": prefix}, "prefix", prefix)
+        if existing:
+            print(f"  = Prefix: '{prefix}' existiert ({existing['id']})")
+            continue
+        if not COMMIT:
+            print(f"  + Prefix: '{prefix}' [{ptype}]  [DRY-RUN]")
+            continue
+        payload = {"prefix": prefix, "status": st_active, "namespace": ns_global,
+                   "type": ptype, "description": desc}
+        st, d = req("POST", "/api/ipam/prefixes/", payload)
+        if st in (200, 201):
+            print(f"  + Prefix: '{prefix}' [{ptype}] angelegt ({d.get('id')})")
+        else:
+            print(f"  ! Prefix: '{prefix}' FEHLER {st}: {json.dumps(d)[:300]}")
+
+    print(f"\n== fertig ({'COMMIT' if COMMIT else 'DRY-RUN — nichts geschrieben'}) ==")
+    if not COMMIT:
+        print("Danach: python3 nautobot/tp44-cf-estate-seed.py --commit  (haengt die 2 Assignments ein)")
+
+
+if __name__ == "__main__":
+    main()