fixup

Author: duanhongyi

rootfs/helmbroker/meta.py

@@ -1,27 +1,47 @@
-from collections import namedtuple
+import os
+import yaml
+from .config import INSTANCES_PATH
 
+INSTANCE_META_FILE = os.path.join(INSTANCES_PATH, "instance.yaml")
 
+class InstanceMeta(object):
+    """
+    {
+        "id": "instance_id",
+        "details": {
+            "service_id": "service_id",
+            "plan_id" : "plan_id",
+            "context" : {
 
-"""
-{
-    "id": "instance_id",
-    "details": {
-        "service_id": "service_id",
-        "plan_id" : "plan_id",
-        "context" : {
+            },
+            "parameters": {
 
+            }
         },
-        "parameters": {
-
+        "last_operation": {
+            "state": "Ready",
+            "description": "everything is ok."
         }
-    },
-    "last_operation": {
-        "state": "Ready",
-        "description": "everything is ok."
     }
-}
-"""
+    """
+    def __init__(self, id, details, last_operation):
+        self.id = id
+        self.details = details
+        self.last_operation = last_operation
+    
+    @classmethod
+    def load(cls, file=INSTANCE_META_FILE):
+        with open(file) as f:
+            data = yaml.load(f, Loader=yaml.Loader)
+            return cls(data["id"], data["details"], data["last_operation"])
 
-
-class InstanceMeta(object):
-    pass
+    def dump(self, file=INSTANCE_META_FILE):
+        with open(file, "w") as f:
+            yaml.dump(
+                {
+                    "id": self.id,
+                    "details": self.details,
+                    "last_operation": self.last_operation
+                },
+                Loader=yaml.Loader
+            )