fleshing out spoke API

capsulflask/hub_model.py

@@ -241,6 +241,7 @@ class CapsulFlaskHub(HubInterface):
     operation_id = op[0]
     results = op[1]
     number_of_assigned = 0
+    error_message = ""
     assigned_hosts = []
     for i in range(len(results)):
       host = online_hosts[i]
@@ -250,6 +251,8 @@ class CapsulFlaskHub(HubInterface):
         if isinstance(result_body, dict) and 'assignment_status' in result_body and result_body['assignment_status'] == "assigned":
           number_of_assigned += 1
           assigned_hosts.append(host.id)
+        if isinstance(result_body, dict) and 'error_message' in result_body:
+          error_message = result_body['error_message']
       except:
         # no need to do anything here since if it cant be parsed then generic_operation will handle it.
         pass
@@ -257,7 +260,8 @@ class CapsulFlaskHub(HubInterface):
     if number_of_assigned != 1:
       assigned_hosts_string = ", ".join(assigned_hosts)
       raise ValueError(f"expected create capsul operation {operation_id} to be assigned to one host, it was assigned to {number_of_assigned} ({assigned_hosts_string})")
-
+    if error_message != "":
+      raise ValueError(f"create capsul operation {operation_id} on {assigned_hosts_string} failed with {error_message}")
       
 
   def destroy(self, email: str, id: str):

capsulflask/spoke_api.py

@@ -1,11 +1,13 @@
 
+import sys
 import aiohttp
 from flask import Blueprint
 from flask import current_app
 from flask import request
+from flask.json import jsonify
 from werkzeug.exceptions import abort
 
-from capsulflask.db import get_model, my_exec_info_message
+from capsulflask.db import  my_exec_info_message
 
 bp = Blueprint("spoke", __name__, url_prefix="/spoke")
 
@@ -20,6 +22,106 @@ def heartbeat():
     # succeed or fail based on whether the request succeeds or fails.
     pass
   else:
-    current_app.logger.info(f"/hosts/heartbeat returned 401: invalid token")
+    current_app.logger.info(f"/hosts/heartbeat returned 401: invalid hub token")
     return abort(401, "invalid hub token")
 
+@bp.route("/operation", methods=("POST"))
+def operation():
+  if authorized_as_hub(id):
+    request_body = request.json()
+    handlers = {
+      "capacity_avaliable": handle_capacity_avaliable,
+      "get": handle_get,
+      "list_ids": handle_list_ids,
+      "create": handle_create,
+      "destroy": handle_destroy,
+    }
+
+    error_message = ""
+    types_csv = ", ".join(handlers.keys())
+    if isinstance(request_body, dict) and 'type' in request_body:
+      if request_body['type'] in handlers:
+        return handlers[request_body['type']](request_body)
+      else:
+        error_message = f"'type' must be one of {types_csv}"
+    else:
+      error_message = "'type' json property is required"
+
+    if error_message != "":
+      current_app.logger.info(f"/hosts/operation returned 400: {error_message}")
+      return abort(400, f"bad request; {error_message}")
+  else:
+    current_app.logger.info(f"/hosts/operation returned 401: invalid hub token")
+    return abort(401, "invalid hub token")
+
+def handle_capacity_avaliable(request_body):
+  if 'additional_ram_bytes' not in request_body:
+    current_app.logger.info(f"/hosts/operation returned 400: additional_ram_bytes is required for capacity_avaliable")
+    return abort(400, f"bad request; additional_ram_bytes is required for capacity_avaliable")
+
+  has_capacity = current_app.config['SPOKE_MODEL'].capacity_avaliable(request_body['additional_ram_bytes'])
+  return jsonify(dict(assignment_status="assigned", capacity_avaliable=has_capacity))
+
+def handle_get(request_body):
+  if 'id' not in request_body:
+    current_app.logger.info(f"/hosts/operation returned 400: id is required for get")
+    return abort(400, f"bad request; id is required for get")
+
+  vm = current_app.config['SPOKE_MODEL'].get(request_body['id'])
+  
+  return jsonify(dict(assignment_status="assigned", id=vm.id, host=vm.host, ipv4=vm.ipv4, ipv6=vm.ipv6))
+
+def handle_list_ids(request_body):
+  return jsonify(dict(assignment_status="assigned", ids=current_app.config['SPOKE_MODEL'].list_ids()))
+
+def handle_create(request_body):
+  parameters = ["operation_id", "email", "id", "template_image_file_name", "vcpus", "memory_mb", "ssh_public_keys"]
+  error_message = ""
+  for parameter in parameters:
+    if parameter not in request_body:
+      error_message = f"{error_message}\n{parameter} is required for create"
+  
+  if error_message != "":
+    current_app.logger.info(f"/hosts/operation returned 400: {error_message}")
+    return abort(400, f"bad request; {error_message}")
+
+  # try to aquire operation_id
+  assignment_status = "assigned"
+
+  if assignment_status == "assigned":
+    try:
+      current_app.config['SPOKE_MODEL'].create(
+        email=request_body['email'],
+        id=request_body['id'],
+        template_image_file_name=request_body['template_image_file_name'],
+        vcpus=request_body['vcpus'],
+        memory_mb=request_body['memory_mb'],
+        ssh_public_keys=request_body['ssh_public_keys'],
+      )
+    except:
+      error_message = my_exec_info_message(sys.exc_info())
+      params = f"email='{request_body['email']}', id='{request_body['id']}', "
+      params = f"{params}, template_image_file_name='{request_body['template_image_file_name']}', vcpus='{request_body['vcpus']}'"
+      params = f"{params}, memory_mb='{request_body['memory_mb']}', ssh_public_keys='{request_body['ssh_public_keys']}'"
+      current_app.logger.error(f"current_app.config['SPOKE_MODEL'].create({params}) failed: {error_message}")
+      return jsonify(dict(assignment_status=assignment_status, error_message=error_message))
+
+  return jsonify(dict(assignment_status=assignment_status))
+
+def handle_destroy(request_body):
+  if 'id' not in request_body:
+    current_app.logger.info(f"/hosts/operation returned 400: id is required for destroy")
+    return abort(400, f"bad request; id is required for destroy")
+
+  if 'email' not in request_body:
+    current_app.logger.info(f"/hosts/operation returned 400: email is required for destroy")
+    return abort(400, f"bad request; email is required for destroy")
+
+  try:
+    current_app.config['SPOKE_MODEL'].destroy(id=request_body['id'], email=request_body['email'])
+  except:
+    error_message = my_exec_info_message(sys.exc_info())
+    current_app.logger.error(f"current_app.config['SPOKE_MODEL'].destroy(id='{request_body['id']}', email='{request_body['email']}') failed: {error_message}")
+    return jsonify(dict(assignment_status="assigned", status="error", error_message=error_message))
+  
+  return jsonify(dict(assignment_status="assigned", status="success"))

capsulflask/spoke_model.py

@@ -156,12 +156,18 @@ class ShellScriptSpoke(SpokeInterface):
         {completedProcess.stderr}
       """)
 
-  def destroy(self, email: str, id: str) -> str:
+  def destroy(self, email: str, id: str):
     validate_capsul_id(id)
     completedProcess = run([join(current_app.root_path, 'shell_scripts/destroy.sh'), id], capture_output=True)
     self.validate_completed_process(completedProcess, email)
     lines = completedProcess.stdout.splitlines()
     status = lines[len(lines)-1].decode("utf-8")
-    return status
+    if not status == "success":
+      raise ValueError(f"""failed to destroy vm {id} for {email} on {current_app.config["SPOKE_HOST_ID"]}:
+        stdout:
+        {completedProcess.stdout}
+        stderr:
+        {completedProcess.stderr}
+      """)