initial skeleton oss settings

geant_service_orchestrator/oss-params-example.json

+{
+  "RESOURCE_MANAGER_API_PREFIX": "http://localhost:44444",
+  "IPAM": {
+    "INFOBLOX": {
+      "scheme": "https",
+      "wapi_version": "v2.12",
+      "host": "10.0.0.1",
+      "username": "robot-user",
+      "password": "robot-user-password"
+    },
+    "TRUNK": {
+      "V4": {"container": "1.1.0.0/19", "mask": 31},
+      "V6": {"container": "dead:beef::/29", "mask": 96}
+    },
+    "GEANT_IP": {
+      "V4": {"container": "1.1.8.0/19", "mask": 31},
+      "V6": {"container": "dead:beef::/29", "mask": 96}
+    }
+  }
+}
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geant_service_orchestrator/settings.py

+import json
+import os
+from typing import Optional
+from pydantic import BaseSettings
+
+
+class InfoBloxParams(BaseSettings):
+    scheme: str
+    wapi_version: str
+    host: str
+    username: str
+    password: str
+
+
+class ServiceNetworkProtocolParams(BaseSettings):
+    container: str  # ipaddress?
+    mask: int
+
+
+class ServiceNetworkParams(BaseSettings):
+    V4: ServiceNetworkProtocolParams
+    V6: ServiceNetworkProtocolParams
+
+
+class IPAMParams(BaseSettings):
+    INFOBLOX: InfoBloxParams
+    TRUNK: ServiceNetworkParams
+    GEANT_IP: ServiceNetworkParams
+
+
+class OSSParams(BaseSettings):
+    IPAM: IPAMParams
+    RESOURCE_MANAGER_API_PREFIX: str  # api prefix
+
+
+def load_oss_params() -> OSSParams:
+    with open(os.environ['OSS_PARAMS_FILENAME']) as f:
+        return OSSParams(**json.loads(f.read()))
+
+
+if __name__ == '__main__':
+    print(load_oss_params())
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