""""
This is thread that interacts with a VIM. It processes TASKs sequentially against a single VIM.
The tasks are stored at database in table vim_actions
-The task content are (M: stored at memory, D: stored at database):
+The task content is (M: stored at memory, D: stored at database):
MD instance_action_id: reference a global action over an instance-scenario: database instance_actions
- MD task_index: index number of the task. This with the previous are a key
+ MD task_index: index number of the task. This together with the previous forms a unique key identifier
MD datacenter_vim_id: should contain the uuid of the VIM managed by this thread
MD vim_id: id of the vm,net,etc at VIM
MD action: CREATE, DELETE, FIND
MD item: database table name, can be instance_vms, instance_nets, TODO: datacenter_flavors, datacenter_images
- MD item_id: uuid of the referenced entry in the preious table
+ MD item_id: uuid of the referenced entry in the previous table
MD status: SCHEDULED,BUILD,DONE,FAILED,SUPERSEDED
MD extra: text with yaml format at database, dict at memory with:
params: list with the params to be sent to the VIM for CREATE or FIND. For DELETE the vim_id is taken from other related tasks
find: (only for CREATE tasks) if present it should FIND before creating and use if existing. Contains the FIND params
- depends_on: list with the 'task_index'es of tasks that must be completed before. e.g. a vm depends on a net
+ depends_on: list with the 'task_index'es of tasks that must be completed before. e.g. a vm creation depends on a net creation
sdn_net_id: used for net.
tries:
interfaces: used for VMs. Each key is the uuid of the instance_interfaces entry at database
__author__ = "Alfonso Tierno, Pablo Montes"
__date__ = "$28-Sep-2017 12:07:15$"
-# from logging import Logger
-# import auxiliary_functions as af
-
def is_task_id(task_id):
return task_id.startswith("TASK-")
task_list = []
old_action_key = None
- with self.db_lock:
- vim_actions = self.db.get_rows(FROM="vim_actions",
- WHERE={"datacenter_vim_id": self.datacenter_tenant_id },
- ORDER_BY=("item", "item_id", "created_at",))
- for task in vim_actions:
- item = task["item"]
- item_id = task["item_id"]
- action_key = item + item_id
- if old_action_key != action_key:
- if not action_completed and task_list:
- # This will fill needed task parameters into memory, and insert the task if needed in
- # self.pending_tasks or self.refresh_tasks
- self._insert_pending_tasks(task_list)
- task_list = []
- old_action_key = action_key
- action_completed = False
- elif action_completed:
- continue
+ old_item_id = ""
+ old_item = ""
+ old_created_at = 0.0
+ database_limit = 200
+ while True:
+ # get 200 (database_limit) entries each time
+ with self.db_lock:
+ vim_actions = self.db.get_rows(FROM="vim_actions",
+ WHERE={"datacenter_vim_id": self.datacenter_tenant_id,
+ "item_id>=": old_item_id},
+ ORDER_BY=("item_id", "item", "created_at",),
+ LIMIT=database_limit)
+ for task in vim_actions:
+ item = task["item"]
+ item_id = task["item_id"]
+
+ # skip the first entries that are already processed in the previous pool of 200
+ if old_item_id:
+ if item_id == old_item_id and item == old_item and task["created_at"] == old_created_at:
+ old_item_id = False # next one will be a new un-processed task
+ continue
- if task["status"] == "SCHEDULED" or task["action"] == "CREATE" or task["action"] == "FIND":
- task_list.append(task)
- elif task["action"] == "DELETE":
- # action completed because deleted and status is not SCHEDULED. Not needed anything
- action_completed = True
+ action_key = item + item_id
+ if old_action_key != action_key:
+ if not action_completed and task_list:
+ # This will fill needed task parameters into memory, and insert the task if needed in
+ # self.pending_tasks or self.refresh_tasks
+ self._insert_pending_tasks(task_list)
+ task_list = []
+ old_action_key = action_key
+ action_completed = False
+ elif action_completed:
+ continue
+ if task["status"] == "SCHEDULED" or task["action"] == "CREATE" or task["action"] == "FIND":
+ task_list.append(task)
+ elif task["action"] == "DELETE":
+ # action completed because deleted and status is not SCHEDULED. Not needed anything
+ action_completed = True
+ if len(vim_actions) == database_limit:
+ # update variables for get the next database iteration
+ old_item_id = item_id
+ old_item = item
+ old_created_at = task["created_at"]
+ else:
+ break
# Last actions group need to be inserted too
if not action_completed and task_list:
self._insert_pending_tasks(task_list)
+ self.logger.debug("reloaded vim actions pending:{} refresh:{}".format(
+ len(self.pending_tasks), len(self.refresh_tasks)))
def _refres_elements(self):
"""Call VIM to get VMs and networks status until 10 elements"""
if vim_info.get("error_msg"):
vim_info["error_msg"] = self._format_vim_error_msg(vim_info["error_msg"])
if task_vim_status != vim_info["status"] or task_error_msg != vim_info.get("error_msg") or \
- task_vim_info != vim_info["vim_info"]:
+ task_vim_info != vim_info.get("vim_info"):
task["extra"]["vim_status"] = vim_info["status"]
task["error_msg"] = vim_info.get("error_msg")
- task["vim_info"] = vim_info["vim_info"]
+ task["vim_info"] = vim_info.get("vim_info")
temp_dict = {"status": vim_info["status"],
"error_msg": vim_info.get("error_msg"),
- "vim_info": vim_info["vim_info"]}
+ "vim_info": vim_info.get("vim_info")}
with self.db_lock:
self.db.update_rows('instance_nets', UPDATE=temp_dict, WHERE={"uuid": task["item_id"]})
self.db.update_rows(
while self.pending_tasks:
task = self.pending_tasks.pop(0)
nb_processed += 1
- if task["status"] == "SUPERSEDED":
- # not needed to do anything but update database with the new status
- result = True
- database_update = None
- elif not self.vim:
- task["status"] == "ERROR"
- task["error_msg"] = self.error_status
- result = False
- database_update = {"status": "VIM_ERROR", "error_msg": task["error_msg"]}
- elif task["item"] == 'instance_vms':
- if task["action"] == "CREATE":
- result, database_update = self.new_vm(task)
- nb_created += 1
- elif task["action"] == "DELETE":
- result, database_update = self.del_vm(task)
- else:
- raise vimconn.vimconnException(self.name + "unknown task action {}".format(task["action"]))
- elif task["item"] == 'instance_nets':
- if task["action"] == "CREATE":
- result, database_update = self.new_net(task)
- nb_created += 1
- elif task["action"] == "DELETE":
- result, database_update = self.del_net(task)
- elif task["action"] == "FIND":
- result, database_update = self.get_net(task)
+ try:
+ # check if tasks that this depends on have been completed
+ dependency_not_completed = False
+ for task_index in task["extra"].get("depends_on", ()):
+ task_dependency = task["depends"].get("TASK-" + str(task_index))
+ if not task_dependency:
+ task_dependency = self._look_for_task(task["instance_action_id"], "TASK-" + str(task_index))
+ if not task_dependency:
+ raise VimThreadException(
+ "Cannot get depending net task trying to get depending task {}.{}".format(
+ task["instance_action_id"], task_index))
+ # task["depends"]["TASK-" + str(task_index)] = task_dependency #it references another object,so database must be look again
+ if task_dependency["status"] == "SCHEDULED":
+ dependency_not_completed = True
+ break
+ elif task_dependency["status"] == "FAILED":
+ raise VimThreadException(
+ "Cannot {} {}, task {}.{} {} because depends on failed {} {}, task{}.{}"
+ "task {}.{}".format(task["action"], task["item"],
+ task["instance_action_id"], task["task_index"],
+ task_dependency["instance_action_id"], task_dependency["task_index"],
+ task_dependency["action"], task_dependency["item"] ))
+ if dependency_not_completed:
+ # Move this task to the end.
+ task["extra"]["tries"] = task["extra"].get("tries", 0) + 1
+ if task["extra"]["tries"] <= 3:
+ self.pending_tasks.append(task)
+ continue
+ else:
+ raise VimThreadException(
+ "Cannot {} {}, (task {}.{}) because timeout waiting to complete {} {}, "
+ "(task {}.{})".format(task["action"], task["item"],
+ task["instance_action_id"], task["task_index"],
+ task_dependency["instance_action_id"], task_dependency["task_index"],
+ task_dependency["action"], task_dependency["item"]))
+
+ if task["status"] == "SUPERSEDED":
+ # not needed to do anything but update database with the new status
+ result = True
+ database_update = None
+ elif not self.vim:
+ task["status"] == "ERROR"
+ task["error_msg"] = self.error_status
+ result = False
+ database_update = {"status": "VIM_ERROR", "error_msg": task["error_msg"]}
+ elif task["item"] == 'instance_vms':
+ if task["action"] == "CREATE":
+ result, database_update = self.new_vm(task)
+ nb_created += 1
+ elif task["action"] == "DELETE":
+ result, database_update = self.del_vm(task)
+ else:
+ raise vimconn.vimconnException(self.name + "unknown task action {}".format(task["action"]))
+ elif task["item"] == 'instance_nets':
+ if task["action"] == "CREATE":
+ result, database_update = self.new_net(task)
+ nb_created += 1
+ elif task["action"] == "DELETE":
+ result, database_update = self.del_net(task)
+ elif task["action"] == "FIND":
+ result, database_update = self.get_net(task)
+ else:
+ raise vimconn.vimconnException(self.name + "unknown task action {}".format(task["action"]))
else:
- raise vimconn.vimconnException(self.name + "unknown task action {}".format(task["action"]))
- else:
- raise vimconn.vimconnException(self.name + "unknown task item {}".format(task["item"]))
- # TODO
+ raise vimconn.vimconnException(self.name + "unknown task item {}".format(task["item"]))
+ # TODO
+ except VimThreadException as e:
+ result = False
+ task["error_msg"] = str(e)
+ task["status"] = "FAILED"
+ database_update = {"status": "VIM_ERROR", "vim_vm_id": None, "error_msg": task["error_msg"]}
- if task["status"] == "SCHEDULED":
- # This is because a depend task is not completed. Moved to the end. NOT USED YET
- if task["extra"].get("tries", 0) > 3:
- task["status"] == "FAILED"
- else:
- task["extra"]["tries"] = task["extra"].get("tries", 0) + 1
- self.pending_tasks.append(task)
- elif task["action"] == "DELETE":
+ if task["action"] == "DELETE":
action_key = task["item"] + task["item_id"]
del self.grouped_tasks[action_key]
elif task["action"] in ("CREATE", "FIND") and task["status"] in ("DONE", "BUILD"):
with self.db_lock:
self.db.update_rows(
table="vim_actions",
- UPDATE={"status": task["status"], "vim_id": task["vim_id"], "modified_at": now,
+ UPDATE={"status": task["status"], "vim_id": task.get("vim_id"), "modified_at": now,
"error_msg": task["error_msg"],
"extra": yaml.safe_dump(task["extra"], default_flow_style=True, width=256)},
WHERE={"instance_action_id": task["instance_action_id"], "task_index": task["task_index"]})
error_text = ""
for net in net_list:
if "net_id" in net and is_task_id(net["net_id"]): # change task_id into network_id
- if net["net_id"] in depends:
- task_net = depends[net["net_id"]]
- else:
- task_net = self._look_for_task(task["instance_action_id"], net["net_id"])
- if not task_net:
- raise VimThreadException(
- "Error trying to get depending task from task_index={}".format(net["net_id"]))
- network_id = task_net.get("vim_id")
+ task_dependency = task["depends"].get(net["net_id"])
+ if not task_dependency:
+ task_dependency = self._look_for_task(task["instance_action_id"], net["net_id"])
+ if not task_dependency:
+ raise VimThreadException(
+ "Cannot get depending net task trying to get depending task {}.{}".format(
+ task["instance_action_id"], net["net_id"]))
+ network_id = task_dependency.get("vim_id")
if not network_id:
raise VimThreadException(
"Cannot create VM because depends on a network not created or found: " +
- str(task_net["error_msg"]))
+ str(depends[net["net_id"]]["error_msg"]))
net["net_id"] = network_id
vim_vm_id, created_items = self.vim.new_vminstance(*params)
projects / osm / RO.git / blobdiff