X-Git-Url: https://osm.etsi.org/gitweb/?a=blobdiff_plain;f=osm_ro%2Fvim_thread.py;h=e401502f408db2786f3e59c6c6af4ba56a094378;hb=00e3df7ab3391d92299ab439d7517f8cb9f47a81;hp=42279a23628f4e69cf12bc69f887f6efd8de30fc;hpb=2c290ca4088492a3c32bb6ab218d0004da68f6ea;p=osm%2FRO.git diff --git a/osm_ro/vim_thread.py b/osm_ro/vim_thread.py index 42279a23..e401502f 100644 --- a/osm_ro/vim_thread.py +++ b/osm_ro/vim_thread.py @@ -21,32 +21,72 @@ # contact with: nfvlabs@tid.es ## -''' -This is thread that interact with the host and the libvirt to manage VM -One thread will be launched per host -''' -__author__ = "Alfonso Tierno" -__date__ = "$10-feb-2017 12:07:15$" +"""" +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 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 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+ MD item_id: uuid of the referenced entry in the previous table + MD status: SCHEDULED,BUILD,DONE,FAILED,SUPERSEDED + MD extra: text with yaml format at database, dict at memory with: + params: list with the params to be sent to the VIM for CREATE or FIND.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 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 + iface_id: uuid of intance_interfaces + sdn_port_id: + sdn_net_id: + created_items: dictionary with extra elements created that need to be deleted. e.g. ports, volumes,... + created: False if the VIM element is not created by other actions, and it should not be deleted + vim_status: VIM status of the element. Stored also at database in the instance_XXX + M depends: dict with task_index(from depends_on) to task class + M params: same as extra[params] but with the resolved dependencies + M vim_interfaces: similar to extra[interfaces] but with VIM information. Stored at database in the instance_XXX but not at vim_actions + M vim_info: Detailed information of a vm,net from the VIM. Stored at database in the instance_XXX but not at vim_actions + MD error_msg: descriptive text upon an error.Stored also at database instance_XXX + MD created_at: task creation time + MD modified_at: last task update time. On refresh it contains when this task need to be refreshed + +""" import threading import time import Queue import logging import vimconn +import yaml from db_base import db_base_Exception +from lib_osm_openvim.ovim import ovimException + +__author__ = "Alfonso Tierno, Pablo Montes" +__date__ = "$28-Sep-2017 12:07:15$" + + +def is_task_id(task_id): + return task_id.startswith("TASK-") -# from logging import Logger -# import auxiliary_functions as af +class VimThreadException(Exception): + pass -def is_task_id(id): - return True if id[:5] == "TASK." else False +class VimThreadExceptionNotFound(VimThreadException): + pass class vim_thread(threading.Thread): + REFRESH_BUILD = 5 # 5 seconds + REFRESH_ACTIVE = 60 # 1 minute - def __init__(self, vimconn, task_lock, name=None, datacenter_name=None, datacenter_tenant_id=None, db=None, db_lock=None): + def __init__(self, myvimconn, task_lock, name=None, datacenter_name=None, datacenter_tenant_id=None, + db=None, db_lock=None, ovim=None): """Init a thread. Arguments: 'id' number of thead @@ -54,16 +94,16 @@ class vim_thread(threading.Thread): 'host','user': host ip or name to manage and user 'db', 'db_lock': database class and lock to use it in exclusion """ - self.tasksResult = {} - """ It will contain a dictionary with - task_id: - status: enqueued,done,error,deleted,processing - result: VIM result, - """ threading.Thread.__init__(self) - self.vim = vimconn + if isinstance(myvimconn, vimconn.vimconnException): + self.vim = None + self.error_status = "Error accesing to VIM: {}".format(myvimconn) + else: + self.vim = myvimconn + self.error_status = None self.datacenter_name = datacenter_name self.datacenter_tenant_id = datacenter_tenant_id + self.ovim = ovim if not name: self.name = vimconn["id"] + "." + vimconn["config"]["datacenter_tenant_id"] else: @@ -76,17 +116,531 @@ class vim_thread(threading.Thread): self.task_lock = task_lock self.task_queue = Queue.Queue(2000) + self.refresh_tasks = [] + """Contains time ordered task list for refreshing the status of VIM VMs and nets""" + + self.pending_tasks = [] + """Contains time ordered task list for creation, deletion of VIM VMs and nets""" + + self.grouped_tasks = {} + """ It contains all the creation/deletion pending tasks grouped by its concrete vm, net, etc + : + - # e.g. CREATE task + # e.g. DELETE task + """ + + def _reload_vim_actions(self): + """ + Read actions from database and reload them at memory. Fill self.refresh_list, pending_list, vim_actions + :return: None + """ + action_completed = False + task_list = [] + old_action_key = None + + 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 + + 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""" + now = time.time() + nb_processed = 0 + vm_to_refresh_list = [] + net_to_refresh_list = [] + vm_to_refresh_dict = {} + net_to_refresh_dict = {} + items_to_refresh = 0 + while self.refresh_tasks: + task = self.refresh_tasks[0] + with self.task_lock: + if task['status'] == 'SUPERSEDED': + self.refresh_tasks.pop(0) + continue + if task['modified_at'] > now: + break + # task["status"] = "processing" + nb_processed += 1 + self.refresh_tasks.pop(0) + if task["item"] == 'instance_vms': + vm_to_refresh_list.append(task["vim_id"]) + vm_to_refresh_dict[task["vim_id"]] = task + elif task["item"] == 'instance_nets': + net_to_refresh_list.append(task["vim_id"]) + net_to_refresh_dict[task["vim_id"]] = task + else: + error_text = "unknown task {}".format(task["item"]) + self.logger.error(error_text) + items_to_refresh += 1 + if items_to_refresh == 10: + break + + if vm_to_refresh_list: + now = time.time() + try: + vim_dict = self.vim.refresh_vms_status(vm_to_refresh_list) + except vimconn.vimconnException as e: + # Mark all tasks at VIM_ERROR status + self.logger.error("vimconnException Exception when trying to refresh vms " + str(e)) + vim_dict = {} + for vim_id in vm_to_refresh_list: + vim_dict[vim_id] = {"status": "VIM_ERROR", "error_msg": str(e)} + + for vim_id, vim_info in vim_dict.items(): + # look for task + task_need_update = False + task = vm_to_refresh_dict[vim_id] + self.logger.debug("get-vm vm_id=%s result=%s", task["vim_id"], str(vim_info)) + + # check and update interfaces + task_warning_msg = "" + for interface in vim_info.get("interfaces", ()): + vim_interface_id = interface["vim_interface_id"] + if vim_interface_id not in task["extra"]["interfaces"]: + self.logger.critical("Interface not found {} on task info {}".format( + vim_interface_id, task["extra"]["interfaces"]), exc_info=True) + continue + task_interface = task["extra"]["interfaces"][vim_interface_id] + task_vim_interface = task["vim_interfaces"].get(vim_interface_id) + if task_vim_interface != interface: + # delete old port + if task_interface.get("sdn_port_id"): + try: + with self.db_lock: + self.ovim.delete_port(task_interface["sdn_port_id"]) + task_interface["sdn_port_id"] = None + task_need_update = True + except ovimException as e: + error_text =" ovimException deleting external_port={} {}".format( + task_interface["sdn_port_id"], e) + self.logger.error(error_text, exc_info=True) + task_warning_msg += error_text + # TODO Set error_msg at instance_nets instead of instance VMs + + # Create SDN port + sdn_net_id = task_interface.get("sdn_net_id") + if sdn_net_id and interface.get("compute_node") and interface.get("pci"): + sdn_port_name = sdn_net_id + "." + task["vim_id"] + sdn_port_name = sdn_port_name[:63] + try: + with self.db_lock: + sdn_port_id = self.ovim.new_external_port( + {"compute_node": interface["compute_node"], + "pci": interface["pci"], + "vlan": interface.get("vlan"), + "net_id": sdn_net_id, + "region": self.vim["config"]["datacenter_id"], + "name": sdn_port_name, + "mac": interface.get("mac_address")}) + task_interface["sdn_port_id"] = sdn_port_id + task_need_update = True + except (ovimException, Exception) as e: + error_text = "ovimException creating new_external_port compute_node={} "\ + "pci={} vlan={} {}".format( + interface["compute_node"], + interface["pci"], + interface.get("vlan"), e) + self.logger.error(error_text, exc_info=True) + task_warning_msg += error_text + # TODO Set error_msg at instance_nets instead of instance VMs + + with self.db_lock: + self.db.update_rows( + 'instance_interfaces', + UPDATE={"mac_address": interface.get("mac_address"), + "ip_address": interface.get("ip_address"), + "vim_info": interface.get("vim_info"), + "sdn_port_id": task_interface.get("sdn_port_id"), + "compute_node": interface.get("compute_node"), + "pci": interface.get("pci"), + "vlan": interface.get("vlan"), + }, + WHERE={'uuid': task_interface["iface_id"]}) + task["vim_interfaces"][vim_interface_id] = interface + + # check and update task and instance_vms database + if vim_info.get("error_msg"): + vim_info["error_msg"] = self._format_vim_error_msg(vim_info["error_msg"] + task_warning_msg) + elif task_warning_msg: + vim_info["error_msg"] = self._format_vim_error_msg(task_warning_msg) + + task_vim_info = task.get("vim_info") + task_error_msg = task.get("error_msg") + task_vim_status = task["extra"].get("vim_status") + if task_vim_status != vim_info["status"] or task_error_msg != vim_info.get("error_msg") or \ + (vim_info.get("vim_info") and task_vim_info != vim_info["vim_info"]): + temp_dict = {"status": vim_info["status"], "error_msg": vim_info.get("error_msg")} + if vim_info.get("vim_info"): + temp_dict["vim_info"] = vim_info["vim_info"] + with self.db_lock: + self.db.update_rows('instance_vms', UPDATE=temp_dict, WHERE={"uuid": task["item_id"]}) + task["extra"]["vim_status"] = vim_info["status"] + task["error_msg"] = vim_info.get("error_msg") + if vim_info.get("vim_info"): + task["vim_info"] = vim_info["vim_info"] + task_need_update = True + + if task_need_update: + with self.db_lock: + self.db.update_rows( + 'vim_actions', + UPDATE={"extra": yaml.safe_dump(task["extra"], default_flow_style=True, width=256), + "error_msg": task.get("error_msg"), "modified_at": now}, + WHERE={'instance_action_id': task['instance_action_id'], + 'task_index': task['task_index']}) + if task["extra"].get("vim_status") == "BUILD": + self._insert_refresh(task, now + self.REFRESH_BUILD) + else: + self._insert_refresh(task, now + self.REFRESH_ACTIVE) + + if net_to_refresh_list: + now = time.time() + try: + vim_dict = self.vim.refresh_nets_status(net_to_refresh_list) + except vimconn.vimconnException as e: + # Mark all tasks at VIM_ERROR status + self.logger.error("vimconnException Exception when trying to refresh nets " + str(e)) + vim_dict = {} + for vim_id in net_to_refresh_list: + vim_dict[vim_id] = {"status": "VIM_ERROR", "error_msg": str(e)} + + for vim_id, vim_info in vim_dict.items(): + # look for task + task = net_to_refresh_dict[vim_id] + self.logger.debug("get-net net_id=%s result=%s", task["vim_id"], str(vim_info)) + + task_vim_info = task.get("vim_info") + task_vim_status = task["extra"].get("vim_status") + task_error_msg = task.get("error_msg") + task_sdn_net_id = task["extra"].get("sdn_net_id") + + # get ovim status + if task_sdn_net_id: + try: + with self.db_lock: + sdn_net = self.ovim.show_network(task_sdn_net_id) + except (ovimException, Exception) as e: + text_error = "ovimException getting network infor snd_net_id={}".format(task_sdn_net_id) + self.logger.error(text_error, exc_info = True) + sdn_net = {"status": "ERROR", "error_msg": text_error} + if sdn_net["status"] == "ERROR": + if not vim_info.get("error_msg"): + vim_info["error_msg"] = sdn_net["error_msg"] + else: + vim_info["error_msg"] = "VIM_ERROR: {} && SDN_ERROR: {}".format( + self._format_vim_error_msg(vim_info["error_msg"], 1024//2-14), + self._format_vim_error_msg(sdn_net["error_msg"], 1024//2-14)) + if vim_info["status"] == "VIM_ERROR": + vim_info["status"] = "VIM_SDN_ERROR" + else: + vim_info["status"] = "SDN_ERROR" + + # update database + 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 \ + (vim_info.get("vim_info") and task_vim_info != vim_info["vim_info"]): + task["extra"]["vim_status"] = vim_info["status"] + task["error_msg"] = vim_info.get("error_msg") + if vim_info.get("vim_info"): + task["vim_info"] = vim_info["vim_info"] + temp_dict = {"status": vim_info["status"], "error_msg": vim_info.get("error_msg")} + if vim_info.get("vim_info"): + temp_dict["vim_info"] = vim_info["vim_info"] + with self.db_lock: + self.db.update_rows('instance_nets', UPDATE=temp_dict, WHERE={"uuid": task["item_id"]}) + self.db.update_rows( + 'vim_actions', + UPDATE={"extra": yaml.safe_dump(task["extra"], default_flow_style=True, width=256), + "error_msg": task.get("error_msg"), "modified_at": now}, + WHERE={'instance_action_id': task['instance_action_id'], + 'task_index': task['task_index']}) + if task["extra"].get("vim_status") == "BUILD": + self._insert_refresh(task, now + self.REFRESH_BUILD) + else: + self._insert_refresh(task, now + self.REFRESH_ACTIVE) + + return nb_processed + + def _insert_refresh(self, task, threshold_time=None): + """Insert a task at list of refreshing elements. The refreshing list is ordered by threshold_time (task['modified_at'] + It is assumed that this is called inside this thread + """ + if not self.vim: + return + if not threshold_time: + threshold_time = time.time() + task["modified_at"] = threshold_time + task_name = task["item"][9:] + "-" + task["action"] + task_id = task["instance_action_id"] + "." + str(task["task_index"]) + for index in range(0, len(self.refresh_tasks)): + if self.refresh_tasks[index]["modified_at"] > threshold_time: + self.refresh_tasks.insert(index, task) + break + else: + index = len(self.refresh_tasks) + self.refresh_tasks.append(task) + self.logger.debug("new refresh task={} name={}, modified_at={} index={}".format( + task_id, task_name, task["modified_at"], index)) + + def _remove_refresh(self, task_name, vim_id): + """Remove a task with this name and vim_id from the list of refreshing elements. + It is assumed that this is called inside this thread outside _refres_elements method + Return True if self.refresh_list is modified, task is found + Return False if not found + """ + index_to_delete = None + for index in range(0, len(self.refresh_tasks)): + if self.refresh_tasks[index]["name"] == task_name and self.refresh_tasks[index]["vim_id"] == vim_id: + index_to_delete = index + break + else: + return False + if index_to_delete != None: + del self.refresh_tasks[index_to_delete] + return True + + def _proccess_pending_tasks(self): + nb_created = 0 + nb_processed = 0 + while self.pending_tasks: + task = self.pending_tasks.pop(0) + nb_processed += 1 + 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{}.{})".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 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["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"): + self._insert_refresh(task) + + self.logger.debug("vim_action id={}.{} item={} action={} result={}:{} params={}".format( + task["instance_action_id"], task["task_index"], task["item"], task["action"], + task["status"], task["vim_id"] if task["status"] == "DONE" else task.get("error_msg"), + task["params"])) + try: + now = time.time() + with self.db_lock: + self.db.update_rows( + table="vim_actions", + 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"]}) + if result is not None: + self.db.update_rows( + table="instance_actions", + UPDATE={("number_done" if result else "number_failed"): {"INCREMENT": 1}, + "modified_at": now}, + WHERE={"uuid": task["instance_action_id"]}) + if database_update: + self.db.update_rows(table=task["item"], + UPDATE=database_update, + WHERE={"uuid": task["item_id"]}) + except db_base_Exception as e: + self.logger.error("Error updating database %s", str(e), exc_info=True) + + if nb_created == 10: + break + return nb_processed + + def _insert_pending_tasks(self, vim_actions_list): + now = time.time() + for task in vim_actions_list: + if task["datacenter_vim_id"] != self.datacenter_tenant_id: + continue + item = task["item"] + item_id = task["item_id"] + action_key = item + item_id + if action_key not in self.grouped_tasks: + self.grouped_tasks[action_key] = [] + task["params"] = None + task["depends"] = {} + if task["extra"]: + extra = yaml.load(task["extra"]) + task["extra"] = extra + task["params"] = extra.get("params") + depends_on_list = extra.get("depends_on") + if depends_on_list: + for index in depends_on_list: + if index < len(vim_actions_list) and vim_actions_list[index]["task_index"] == index and\ + vim_actions_list[index]["instance_action_id"] == task["instance_action_id"]: + task["depends"]["TASK-" + str(index)] = vim_actions_list[index] + if extra.get("interfaces"): + task["vim_interfaces"] = {} + else: + task["extra"] = {} + if "error_msg" not in task: + task["error_msg"] = None + if "vim_id" not in task: + task["vim_id"] = None + + if task["action"] == "DELETE": + need_delete_action = False + for to_supersede in self.grouped_tasks.get(action_key, ()): + if to_supersede["action"] == "FIND" and to_supersede.get("vim_id"): + task["vim_id"] = to_supersede["vim_id"] + if to_supersede["action"] == "CREATE" and to_supersede["extra"].get("created", True) and \ + (to_supersede.get("vim_id") or to_supersede["extra"].get("sdn_net_id")): + need_delete_action = True + task["vim_id"] = to_supersede["vim_id"] + if to_supersede["extra"].get("sdn_net_id"): + task["extra"]["sdn_net_id"] = to_supersede["extra"]["sdn_net_id"] + if to_supersede["extra"].get("interfaces"): + task["extra"]["interfaces"] = to_supersede["extra"]["interfaces"] + if to_supersede["extra"].get("created_items"): + if not task["extra"].get("created_items"): + task["extra"]["created_items"] = {} + task["extra"]["created_items"].update(to_supersede["extra"]["created_items"]) + # Mark task as SUPERSEDED. + # If task is in self.pending_tasks, it will be removed and database will be update + # If task is in self.refresh_tasks, it will be removed + to_supersede["status"] = "SUPERSEDED" + if not need_delete_action: + task["status"] = "SUPERSEDED" + + self.grouped_tasks[action_key].append(task) + self.pending_tasks.append(task) + elif task["status"] == "SCHEDULED": + self.grouped_tasks[action_key].append(task) + self.pending_tasks.append(task) + elif task["action"] in ("CREATE", "FIND"): + self.grouped_tasks[action_key].append(task) + if task["status"] in ("DONE", "BUILD"): + self._insert_refresh(task) + # TODO add VM reset, get console, etc... + else: + raise vimconn.vimconnException(self.name + "unknown vim_action action {}".format(task["action"])) + def insert_task(self, task): try: self.task_queue.put(task, False) - return task["id"] + return None except Queue.Full: raise vimconn.vimconnException(self.name + ": timeout inserting a task") def del_task(self, task): with self.task_lock: - if task["status"] == "enqueued": - task["status"] == "deleted" + if task["status"] == "SCHEDULED": + task["status"] == "SUPERSEDED" return True else: # task["status"] == "processing" self.task_lock.release() @@ -95,132 +649,278 @@ class vim_thread(threading.Thread): def run(self): self.logger.debug("Starting") while True: - #TODO reload service + self._reload_vim_actions() + reload_thread = False while True: - if not self.task_queue.empty(): - task = self.task_queue.get() - self.task_lock.acquire() - if task["status"] == "deleted": - self.task_lock.release() - continue - task["status"] == "processing" - self.task_lock.release() - else: - now=time.time() - time.sleep(1) - continue - self.logger.debug("processing task id={} name={} params={}".format(task["id"], task["name"], - str(task["params"]))) - if task["name"] == 'exit' or task["name"] == 'reload': - result, content = self.terminate(task) - elif task["name"] == 'new-vm': - result, content = self.new_vm(task) - elif task["name"] == 'del-vm': - result, content = self.del_vm(task) - elif task["name"] == 'new-net': - result, content = self.new_net(task) - elif task["name"] == 'del-net': - result, content = self.del_net(task) - else: - error_text = "unknown task {}".format(task["name"]) - self.logger.error(error_text) - result = False - content = error_text + try: + while not self.task_queue.empty(): + task = self.task_queue.get() + if isinstance(task, list): + self._insert_pending_tasks(task) + elif isinstance(task, str): + if task == 'exit': + return 0 + elif task == 'reload': + reload_thread = True + break + self.task_queue.task_done() + if reload_thread: + break + nb_processed = self._proccess_pending_tasks() + nb_processed += self._refres_elements() + if not nb_processed: + time.sleep(1) - with self.task_lock: - task["status"] = "done" if result else "error" - task["result"] = content - self.task_queue.task_done() - - if task["name"] == 'exit': - return 0 - elif task["name"] == 'reload': - break + except Exception as e: + self.logger.critical("Unexpected exception at run: " + str(e), exc_info=True) self.logger.debug("Finishing") def terminate(self, task): return True, None - def new_net(self, task): - try: - task_id = task["id"] - params = task["params"] - net_id = self.vim.new_network(*params) - with self.db_lock: - self.db.update_rows("instance_nets", UPDATE={"vim_net_id": net_id}, WHERE={"vim_net_id": task_id}) - return True, net_id - except db_base_Exception as e: - self.logger.error("Error updating database %s", str(e)) - return True, net_id - except vimconn.vimconnException as e: - return False, str(e) + def _look_for_task(self, instance_action_id, task_id): + task_index = task_id.split("-")[-1] + with self.db_lock: + tasks = self.db.get_rows(FROM="vim_actions", WHERE={"instance_action_id": instance_action_id, + "task_index": task_index}) + if not tasks: + return None + task = tasks[0] + task["params"] = None + task["depends"] = {} + if task["extra"]: + extra = yaml.load(task["extra"]) + task["extra"] = extra + task["params"] = extra.get("params") + if extra.get("interfaces"): + task["vim_interfaces"] = {} + else: + task["extra"] = {} + return task + + def _format_vim_error_msg(self, error_text, max_length=1024): + if error_text and len(error_text) >= max_length: + return error_text[:max_length//2-3] + " ... " + error_text[-max_length//2+3:] + return error_text def new_vm(self, task): try: params = task["params"] - task_id = task["id"] + task_id = task["instance_action_id"] + "." + str(task["task_index"]) depends = task.get("depends") net_list = params[5] + error_text = "" for net in net_list: - if is_task_id(net["net_id"]): # change task_id into network_id - try: - task_net = depends[net["net_id"]] - with self.task_lock: - if task_net["status"] == "error": - return False, "Cannot create VM because depends on a network that cannot be created: " + \ - str(task_net["result"]) - elif task_net["status"] == "enqueued" or task_net["status"] == "processing": - return False, "Cannot create VM because depends on a network still not created" - network_id = task_net["result"] - net["net_id"] = network_id - except Exception as e: - return False, "Error trying to map from task_id={} to task result: {}".format(net["net_id"], - str(e)) - vm_id = self.vim.new_vminstance(*params) - with self.db_lock: - self.db.update_rows("instance_vms", UPDATE={"vim_vm_id": vm_id}, WHERE={"vim_vm_id": task_id}) - return True, vm_id - except db_base_Exception as e: - self.logger.error("Error updtaing database %s", str(e)) - return True, vm_id - except vimconn.vimconnException as e: - return False, str(e) + if "net_id" in net and is_task_id(net["net_id"]): # change task_id into network_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(depends[net["net_id"]]["error_msg"])) + net["net_id"] = network_id + vim_vm_id, created_items = self.vim.new_vminstance(*params) + + # fill task_interfaces. Look for snd_net_id at database for each interface + task_interfaces = {} + for iface in net_list: + task_interfaces[iface["vim_id"]] = {"iface_id": iface["uuid"]} + with self.db_lock: + result = self.db.get_rows(SELECT=('sdn_net_id',), + FROM='instance_nets as ine join instance_interfaces as ii on ii.instance_net_id=ine.uuid', + WHERE={'ii.uuid': iface["uuid"]}) + if result: + task_interfaces[iface["vim_id"]]["sdn_net_id"] = result[0]['sdn_net_id'] + else: + self.logger.critical("Error creating VM, task=%s Network {} not found at DB", task_id, + iface["uuid"], exc_info=True) + + task["vim_info"] = {} + task["vim_interfaces"] = {} + task["extra"]["interfaces"] = task_interfaces + task["extra"]["created"] = True + task["extra"]["created_items"] = created_items + task["error_msg"] = None + task["status"] = "DONE" + task["vim_id"] = vim_vm_id + instance_element_update = {"status": "BUILD", "vim_vm_id": vim_vm_id, "error_msg": None} + return True, instance_element_update + + except (vimconn.vimconnException, VimThreadException) as e: + self.logger.error("Error creating VM, task=%s: %s", task_id, str(e)) + error_text = self._format_vim_error_msg(str(e)) + task["error_msg"] = error_text + task["status"] = "FAILED" + task["vim_id"] = None + instance_element_update = {"status": "VIM_ERROR", "vim_vm_id": None, "error_msg": error_text} + return False, instance_element_update def del_vm(self, task): - vm_id = task["params"] - if is_task_id(vm_id): - try: - task_create = task["depends"][vm_id] - with self.task_lock: - if task_create["status"] == "error": - return True, "VM was not created. It has error: " + str(task_create["result"]) - elif task_create["status"] == "enqueued" or task_create["status"] == "processing": - return False, "Cannot delete VM because still creating" - vm_id = task_create["result"] - except Exception as e: - return False, "Error trying to get task_id='{}':".format(vm_id, str(e)) + vm_vim_id = task["vim_id"] + interfaces = task["extra"].get("interfaces", ()) try: - return True, self.vim.delete_vminstance(vm_id) + for iface in interfaces.values(): + if iface.get("sdn_port_id"): + try: + with self.db_lock: + self.ovim.delete_port(iface["sdn_port_id"]) + except ovimException as e: + self.logger.error("ovimException deleting external_port={} at VM vim_id={} deletion ".format( + iface["sdn_port_id"], vm_vim_id) + str(e), exc_info=True) + # TODO Set error_msg at instance_nets + + self.vim.delete_vminstance(vm_vim_id, task["extra"].get("created_items")) + task["status"] = "DONE" + task["error_msg"] = None + return True, None + except vimconn.vimconnException as e: - return False, str(e) + task["error_msg"] = self._format_vim_error_msg(str(e)) + if isinstance(e, vimconn.vimconnNotFoundException): + # If not found mark as Done and fill error_msg + task["status"] = "DONE" + return True, None + task["status"] = "FAILED" + return False, None - def del_net(self, task): - net_id = task["params"] - if is_task_id(net_id): - try: - task_create = task["depends"][net_id] - with self.task_lock: - if task_create["status"] == "error": - return True, "net was not created. It has error: " + str(task_create["result"]) - elif task_create["status"] == "enqueued" or task_create["status"] == "processing": - return False, "Cannot delete net because still creating" - net_id = task_create["result"] - except Exception as e: - return False, "Error trying to get task_id='{}':".format(net_id, str(e)) + def _get_net_internal(self, task, filter_param): + """ + Common code for get_net and new_net. It looks for a network on VIM with the filter_params + :param task: task for this find or find-or-create action + :param filter_param: parameters to send to the vimconnector + :return: a dict with the content to update the instance_nets database table. Raises an exception on error, or + when network is not found or found more than one + """ + vim_nets = self.vim.get_network_list(filter_param) + if not vim_nets: + raise VimThreadExceptionNotFound("Network not found with this criteria: '{}'".format(filter_param)) + elif len(vim_nets) > 1: + raise VimThreadException("More than one network found with this criteria: '{}'".format(filter_param)) + vim_net_id = vim_nets[0]["id"] + + # Discover if this network is managed by a sdn controller + sdn_net_id = None + with self.db_lock: + result = self.db.get_rows(SELECT=('sdn_net_id',), FROM='instance_nets', + WHERE={'vim_net_id': vim_net_id, 'instance_scenario_id': None, + 'datacenter_tenant_id': self.datacenter_tenant_id}) + if result: + sdn_net_id = result[0]['sdn_net_id'] + + task["status"] = "DONE" + task["extra"]["vim_info"] = {} + task["extra"]["created"] = False + task["extra"]["sdn_net_id"] = sdn_net_id + task["error_msg"] = None + task["vim_id"] = vim_net_id + instance_element_update = {"vim_net_id": vim_net_id, "created": False, "status": "BUILD", + "error_msg": None, "sdn_net_id": sdn_net_id} + return instance_element_update + + def get_net(self, task): try: - return True, self.vim.delete_network(net_id) - except vimconn.vimconnException as e: - return False, str(e) + task_id = task["instance_action_id"] + "." + str(task["task_index"]) + params = task["params"] + filter_param = params[0] + instance_element_update = self._get_net_internal(task, filter_param) + return True, instance_element_update + + except (vimconn.vimconnException, VimThreadException) as e: + self.logger.error("Error looking for NET, task=%s: %s", str(task_id), str(e)) + task["status"] = "FAILED" + task["vim_id"] = None + task["error_msg"] = self._format_vim_error_msg(str(e)) + instance_element_update = {"vim_net_id": None, "status": "VIM_ERROR", + "error_msg": task["error_msg"]} + return False, instance_element_update + def new_net(self, task): + vim_net_id = None + sdn_net_id = None + try: + task_id = task["instance_action_id"] + "." + str(task["task_index"]) + # FIND + if task["extra"].get("find"): + action_text = "finding" + filter_param = task["extra"]["find"][0] + try: + instance_element_update = self._get_net_internal(task, filter_param) + return True, instance_element_update + except VimThreadExceptionNotFound: + pass + # CREATE + params = task["params"] + action_text = "creating VIM" + vim_net_id = self.vim.new_network(*params) + net_name = params[0] + net_type = params[1] + + sdn_controller = self.vim.config.get('sdn-controller') + if sdn_controller and (net_type == "data" or net_type == "ptp"): + network = {"name": net_name, "type": net_type, "region": self.vim["config"]["datacenter_id"]} + + vim_net = self.vim.get_network(vim_net_id) + if vim_net.get('encapsulation') != 'vlan': + raise vimconn.vimconnException( + "net '{}' defined as type '{}' has not vlan encapsulation '{}'".format( + net_name, net_type, vim_net['encapsulation'])) + network["vlan"] = vim_net.get('segmentation_id') + action_text = "creating SDN" + with self.db_lock: + sdn_net_id = self.ovim.new_network(network) + task["status"] = "DONE" + task["extra"]["vim_info"] = {} + task["extra"]["sdn_net_id"] = sdn_net_id + task["extra"]["created"] = True + task["error_msg"] = None + task["vim_id"] = vim_net_id + instance_element_update = {"vim_net_id": vim_net_id, "sdn_net_id": sdn_net_id, "status": "BUILD", + "created": True, "error_msg": None} + return True, instance_element_update + except (vimconn.vimconnException, ovimException) as e: + self.logger.error("Error {} NET, task={}: {}".format(action_text, task_id, e)) + task["status"] = "FAILED" + task["vim_id"] = vim_net_id + task["error_msg"] = self._format_vim_error_msg(str(e)) + task["extra"]["sdn_net_id"] = sdn_net_id + instance_element_update = {"vim_net_id": vim_net_id, "sdn_net_id": sdn_net_id, "status": "VIM_ERROR", + "error_msg": task["error_msg"]} + return False, instance_element_update + + def del_net(self, task): + net_vim_id = task["vim_id"] + sdn_net_id = task["extra"].get("sdn_net_id") + try: + if sdn_net_id: + # Delete any attached port to this sdn network. There can be ports associated to this network in case + # it was manually done using 'openmano vim-net-sdn-attach' + with self.db_lock: + port_list = self.ovim.get_ports(columns={'uuid'}, + filter={'name': 'external_port', 'net_id': sdn_net_id}) + for port in port_list: + self.ovim.delete_port(port['uuid']) + self.ovim.delete_network(sdn_net_id) + if net_vim_id: + self.vim.delete_network(net_vim_id) + task["status"] = "DONE" + task["error_msg"] = None + return True, None + except ovimException as e: + task["error_msg"] = self._format_vim_error_msg("ovimException obtaining and deleting external " + "ports for net {}: {}".format(sdn_net_id, str(e))) + except vimconn.vimconnException as e: + task["error_msg"] = self._format_vim_error_msg(str(e)) + if isinstance(e, vimconn.vimconnNotFoundException): + # If not found mark as Done and fill error_msg + task["status"] = "DONE" + return True, None + task["status"] = "FAILED" + return False, None