Add peer data implementation

peer/peerdata.py

@@ -0,0 +1,32 @@
+from .peerdata_interface import IPeerData
+
+class PeerData(IPeerData):
+
+    def __init__(self, context):
+    	self.metadata = {}
+        self.protocols = []
+        self.addrs = []
+
+    def get_protocols(self):
+    	return self.protocols
+
+    def add_protocols(self, protocols):
+        self.protocols.extend(protocols)
+
+    def add_addrs(self, addrs):
+    	self.addrs.extend(addrs)
+
+    def get_addrs(self):
+    	return self.addrs
+
+    def clear_addrs(self):
+    	self.addrs = []
+
+    def put_metadata(self, key, val):
+    	self.metadata[key] = val
+
+    def get_metadata(self, key):
+    	if key in self.metadata:
+            return self.metadata[key], None
+        else:
+            return None, "key not found"