parse meta_data.json on startup

Author: syedhaseebahmed

README.md

@@ -54,7 +54,7 @@ non-interactive.
 
 ```bash
 # using uvx
-uvx esxi-image --output esxi.img path/to/esxi.iso
+uvx esxi-img --output esxi.img path/to/esxi.iso
 
 # using pip
 python -m venv .venv

packages/esxi-netinit/doc/meta_data.json

@@ -0,0 +1,39 @@
+{
+   "random_seed": "yu5ZnkqF2CqnDZVAfZgarG...",
+   "availability_zone": "nova",
+   "keys": [
+       {
+         "data": "ssh-rsa AAAAB3NzaC1y...== Generated by Nova\n",
+         "type": "ssh",
+         "name": "mykey"
+       }
+   ],
+   "hostname": "test.novalocal",
+   "launch_index": 0,
+   "meta": {
+      "priority": "low",
+      "role": "webserver"
+   },
+   "devices": [
+       {
+         "type": "nic",
+         "bus": "pci",
+         "address": "0000:00:02.0",
+         "mac": "00:11:22:33:44:55",
+         "tags": ["trusted"]
+       },
+       {
+         "type": "disk",
+         "bus": "ide",
+         "address": "0:0",
+         "serial": "disk-vol-2352423",
+         "path": "/dev/sda",
+         "tags": ["baz"]
+       }
+   ],
+   "project_id": "f7ac731cc11f40efbc03a9f9e1d1d21f",
+   "public_keys": {
+       "mykey": "ssh-rsa AAAAB3NzaC1y...== Generated by Nova\n"
+   },
+   "name": "test"
+}

packages/esxi-netinit/doc/example.json renamed to packages/esxi-netinit/doc/network_data.json

@@ -3,8 +3,10 @@
 import logging.handlers
 import os
 import sys
+from pathlib import Path
 
 from esxi_netinit.esxconfig import ESXConfig
+from esxi_netinit.meta_data import MetaDataData
 from esxi_netinit.network_data import NetworkData
 
 OLD_MGMT_PG = "Management Network"
@@ -38,8 +40,22 @@ def setup_logger(log_level=logging.INFO):
         logger.error("Failed to setup syslog for logging")
 
 
-def main(json_file, dry_run):
-    network_data = NetworkData.from_json_file(json_file)
+def main(config_dir, dry_run):
+    config_path = Path(config_dir)
+    network_data_file = config_path / "network_data.json"
+    meta_data_file = config_path / "meta_data.json"
+
+    if not network_data_file.exists():
+        logger.error("Missing network_data.json in %s", config_dir)
+        sys.exit(1)
+
+    network_data = NetworkData.from_json_file(network_data_file)
+
+    if meta_data_file.exists():
+        logger.info("Loading meta_data.json from %s", meta_data_file)
+        meta_data = MetaDataData.from_json_file(meta_data_file)
+        logger.debug(meta_data)
+
     esx = ESXConfig(network_data, dry_run=dry_run)
     esx.clean_default_network_setup(OLD_MGMT_PG, OLD_VSWITCH)
     esx.configure_vswitch(

packages/esxi-netinit/esxi_netinit/main.py

@@ -0,0 +1,17 @@
+import json
+import logging
+from .metadata import MetaData
+
+logger = logging.getLogger(__name__)
+
+class MetaDataData:
+    """Represents meta_data.json."""
+
+    def __init__(self, data: dict):
+        self.data = data
+
+    @staticmethod
+    def from_json_file(path):
+        with open(path) as f:
+            data = json.load(f)
+            return MetaData(data)

packages/esxi-netinit/esxi_netinit/meta_data.py

@@ -0,0 +1,18 @@
+from dataclasses import dataclass, field
+from typing import Dict, Optional
+
+
+@dataclass
+class MetaData:
+    uuid: str
+    admin_pass: str
+    hostname: str
+    project_id: str
+    random_seed: str
+    launch_index: Optional[int] = 0
+    availability_zone: Optional[str] = None
+    meta: Dict[str, str] = field(default_factory=dict)
+    public_keys: Dict[str, str] = field(default_factory=dict)
+    devices: "list | None" = field(default=None)
+    dedicated_cpus: "list | None" = field(default=None)
+