got httpclient working, spoke heartbeat is working

capsulflask/shared.py

@@ -0,0 +1,44 @@
+import re
+
+from flask import current_app
+
+class OnlineHost:
+  def __init__(self, id: str, url: str):
+    self.id = id
+    self.url = url
+
+class VirtualMachine:
+  def __init__(self, id, host, ipv4=None, ipv6=None):
+    self.id = id
+    self.host = host
+    self.ipv4 = ipv4
+    self.ipv6 = ipv6
+
+class VirtualizationInterface:
+  def capacity_avaliable(self, additional_ram_bytes: int) -> bool:
+    pass
+
+  def get(self, id: str) -> VirtualMachine:
+    pass
+
+  def list_ids(self) -> list:
+    pass
+
+  def create(self, email: str, id: str, template_image_file_name: str, vcpus: int, memory: int, ssh_public_keys: list):
+    pass
+
+  def destroy(self, email: str, id: str):
+    pass
+
+def validate_capsul_id(id):
+  if not re.match(r"^(cvm|capsul)-[a-z0-9]{10}$", id):
+    raise ValueError(f"vm id \"{id}\" must match \"^capsul-[a-z0-9]{{10}}$\"")
+
+def authorized_as_hub(headers):
+  if headers.get('Authorization'):
+    auth_header_value = headers.get('Authorization').replace("Bearer ", "")
+    return auth_header_value == current_app.config["HUB_TOKEN"]
+  return False
+
+def my_exec_info_message(exec_info):
+  return "{}: {}".format(".".join([exec_info[0].__module__, exec_info[0].__name__]), exec_info[1])