Source code for swh.scheduler.interface

# Copyright (C) 2015-2021  The Software Heritage developers
# See the AUTHORS file at the top-level directory of this distribution
# License: GNU General Public License version 3, or any later version
# See top-level LICENSE file for more information


import datetime
from typing import Any, Dict, Iterable, List, Optional, Tuple, Union
from uuid import UUID

from typing_extensions import Protocol, runtime_checkable

from swh.core.api import remote_api_endpoint
from swh.core.api.classes import PagedResult
from swh.scheduler.model import ListedOrigin, Lister, OriginVisitStats, SchedulerMetrics

ListedOriginPageToken = Tuple[str, str]


[docs]class PaginatedListedOriginList(PagedResult[ListedOrigin, ListedOriginPageToken]): """A list of listed origins, with a continuation token""" def __init__( self, results: List[ListedOrigin], next_page_token: Union[None, ListedOriginPageToken, List[str]], ): parsed_next_page_token: Optional[Tuple[str, str]] = None if next_page_token is not None: if len(next_page_token) != 2: raise TypeError("Expected Tuple[str, str] or list of size 2.") parsed_next_page_token = tuple(next_page_token) # type: ignore super().__init__(results, parsed_next_page_token)
[docs]@runtime_checkable class SchedulerInterface(Protocol):
[docs] @remote_api_endpoint("task_type/create") def create_task_type(self, task_type): """Create a new task type ready for scheduling. Args: task_type (dict): a dictionary with the following keys: - type (str): an identifier for the task type - description (str): a human-readable description of what the task does - backend_name (str): the name of the task in the job-scheduling backend - default_interval (datetime.timedelta): the default interval between two task runs - min_interval (datetime.timedelta): the minimum interval between two task runs - max_interval (datetime.timedelta): the maximum interval between two task runs - backoff_factor (float): the factor by which the interval changes at each run - max_queue_length (int): the maximum length of the task queue for this task type """ ...
[docs] @remote_api_endpoint("task_type/get") def get_task_type(self, task_type_name): """Retrieve the task type with id task_type_name""" ...
[docs] @remote_api_endpoint("task_type/get_all") def get_task_types(self): """Retrieve all registered task types""" ...
[docs] @remote_api_endpoint("task/create") def create_tasks(self, tasks, policy="recurring"): """Create new tasks. Args: tasks (list): each task is a dictionary with the following keys: - type (str): the task type - arguments (dict): the arguments for the task runner, keys: - args (list of str): arguments - kwargs (dict str -> str): keyword arguments - next_run (datetime.datetime): the next scheduled run for the task Returns: a list of created tasks. """ ...
[docs] @remote_api_endpoint("task/set_status") def set_status_tasks( self, task_ids: List[int], status: str = "disabled", next_run: Optional[datetime.datetime] = None, ): """Set the tasks' status whose ids are listed. If given, also set the next_run date. """ ...
[docs] @remote_api_endpoint("task/disable") def disable_tasks(self, task_ids): """Disable the tasks whose ids are listed.""" ...
[docs] @remote_api_endpoint("task/search") def search_tasks( self, task_id=None, task_type=None, status=None, priority=None, policy=None, before=None, after=None, limit=None, ): """Search tasks from selected criterions""" ...
[docs] @remote_api_endpoint("task/get") def get_tasks(self, task_ids): """Retrieve the info of tasks whose ids are listed.""" ...
[docs] @remote_api_endpoint("task/peek_ready") def peek_ready_tasks( self, task_type: str, timestamp: Optional[datetime.datetime] = None, num_tasks: Optional[int] = None, ) -> List[Dict]: """Fetch the list of tasks (with no priority) to be scheduled. Args: task_type: filtering task per their type timestamp: peek tasks that need to be executed before that timestamp num_tasks: only peek at num_tasks tasks (with no priority) Returns: the list of tasks which would be scheduled """ ...
[docs] @remote_api_endpoint("task/grab_ready") def grab_ready_tasks( self, task_type: str, timestamp: Optional[datetime.datetime] = None, num_tasks: Optional[int] = None, ) -> List[Dict]: """Fetch and schedule the list of tasks (with no priority) ready to be scheduled. Args: task_type: filtering task per their type timestamp: grab tasks that need to be executed before that timestamp num_tasks: only grab num_tasks tasks (with no priority) Returns: the list of scheduled tasks """ ...
[docs] @remote_api_endpoint("task/peek_ready_with_priority") def peek_ready_priority_tasks( self, task_type: str, timestamp: Optional[datetime.datetime] = None, num_tasks: Optional[int] = None, ) -> List[Dict]: """Fetch list of tasks (with any priority) ready to be scheduled. Args: task_type: filtering task per their type timestamp: peek tasks that need to be executed before that timestamp num_tasks: only peek at num_tasks tasks (with no priority) Returns: a list of tasks """ ...
[docs] @remote_api_endpoint("task/grab_ready_with_priority") def grab_ready_priority_tasks( self, task_type: str, timestamp: Optional[datetime.datetime] = None, num_tasks: Optional[int] = None, ) -> List[Dict]: """Fetch and schedule the list of tasks (with any priority) ready to be scheduled. Args: task_type: filtering task per their type timestamp: grab tasks that need to be executed before that timestamp num_tasks: only grab num_tasks tasks (with no priority) Returns: a list of tasks """ ...
[docs] @remote_api_endpoint("task_run/schedule_one") def schedule_task_run(self, task_id, backend_id, metadata=None, timestamp=None): """Mark a given task as scheduled, adding a task_run entry in the database. Args: task_id (int): the identifier for the task being scheduled backend_id (str): the identifier of the job in the backend metadata (dict): metadata to add to the task_run entry timestamp (datetime.datetime): the instant the event occurred Returns: a fresh task_run entry """ ...
[docs] @remote_api_endpoint("task_run/schedule") def mass_schedule_task_runs(self, task_runs): """Schedule a bunch of task runs. Args: task_runs (list): a list of dicts with keys: - task (int): the identifier for the task being scheduled - backend_id (str): the identifier of the job in the backend - metadata (dict): metadata to add to the task_run entry - scheduled (datetime.datetime): the instant the event occurred Returns: None """ ...
[docs] @remote_api_endpoint("task_run/start") def start_task_run(self, backend_id, metadata=None, timestamp=None): """Mark a given task as started, updating the corresponding task_run entry in the database. Args: backend_id (str): the identifier of the job in the backend metadata (dict): metadata to add to the task_run entry timestamp (datetime.datetime): the instant the event occurred Returns: the updated task_run entry """ ...
[docs] @remote_api_endpoint("task_run/end") def end_task_run( self, backend_id, status, metadata=None, timestamp=None, result=None, ): """Mark a given task as ended, updating the corresponding task_run entry in the database. Args: backend_id (str): the identifier of the job in the backend status (str): how the task ended; one of: 'eventful', 'uneventful', 'failed' metadata (dict): metadata to add to the task_run entry timestamp (datetime.datetime): the instant the event occurred Returns: the updated task_run entry """ ...
[docs] @remote_api_endpoint("task/filter_for_archive") def filter_task_to_archive( self, after_ts: str, before_ts: str, limit: int = 10, page_token: Optional[str] = None, ) -> Dict[str, Any]: """Compute the tasks to archive within the datetime interval [after_ts, before_ts[. The method returns a paginated result. Returns: dict with the following keys: - **next_page_token**: opaque token to be used as `page_token` to retrieve the next page of result. If absent, there is no more pages to gather. - **tasks**: list of task dictionaries with the following keys: **id** (str): origin task id **started** (Optional[datetime]): started date **scheduled** (datetime): scheduled date **arguments** (json dict): task's arguments ... """ ...
[docs] @remote_api_endpoint("task/delete_archived") def delete_archived_tasks(self, task_ids): """Delete archived tasks as much as possible. Only the task_ids whose complete associated task_run have been cleaned up will be. """ ...
[docs] @remote_api_endpoint("task_run/get") def get_task_runs(self, task_ids, limit=None): """Search task run for a task id""" ...
[docs] @remote_api_endpoint("listers/get") def get_listers(self) -> List[Lister]: """Retrieve information about all listers from the database. """ ...
[docs] @remote_api_endpoint("lister/get") def get_lister( self, name: str, instance_name: Optional[str] = None ) -> Optional[Lister]: """Retrieve information about the given instance of the lister from the database. """ ...
[docs] @remote_api_endpoint("lister/get_or_create") def get_or_create_lister( self, name: str, instance_name: Optional[str] = None ) -> Lister: """Retrieve information about the given instance of the lister from the database, or create the entry if it did not exist. """ ...
[docs] @remote_api_endpoint("lister/update") def update_lister(self, lister: Lister) -> Lister: """Update the state for the given lister instance in the database. Returns: a new Lister object, with all fields updated from the database Raises: StaleData if the `updated` timestamp for the lister instance in database doesn't match the one passed by the user. """ ...
[docs] @remote_api_endpoint("origins/record") def record_listed_origins( self, listed_origins: Iterable[ListedOrigin] ) -> List[ListedOrigin]: """Record a set of origins that a lister has listed. This performs an "upsert": origins with the same (lister_id, url, visit_type) values are updated with new values for extra_loader_arguments, last_update and last_seen. """ ...
[docs] @remote_api_endpoint("origins/get") def get_listed_origins( self, lister_id: Optional[UUID] = None, url: Optional[str] = None, limit: int = 1000, page_token: Optional[ListedOriginPageToken] = None, ) -> PaginatedListedOriginList: """Get information on the listed origins matching either the `url` or `lister_id`, or both arguments. Use the `limit` and `page_token` arguments for continuation. The next page token, if any, is returned in the PaginatedListedOriginList object. """ ...
[docs] @remote_api_endpoint("origins/grab_next") def grab_next_visits( self, visit_type: str, count: int, policy: str, enabled: bool = True, lister_uuid: Optional[str] = None, timestamp: Optional[datetime.datetime] = None, scheduled_cooldown: Optional[datetime.timedelta] = datetime.timedelta(days=7), failed_cooldown: Optional[datetime.timedelta] = datetime.timedelta(days=14), not_found_cooldown: Optional[datetime.timedelta] = datetime.timedelta(days=31), tablesample: Optional[float] = None, ) -> List[ListedOrigin]: """Get at most the `count` next origins that need to be visited with the `visit_type` loader according to the given scheduling `policy`. This will mark the origins as scheduled in the origin_visit_stats table, to avoid scheduling multiple visits to the same origin. Arguments: visit_type: type of visits to schedule count: number of visits to schedule policy: the scheduling policy used to select which visits to schedule enabled: Determine whether we want to list enabled or disabled origins. As default, we want reasonably enabled origins. For some edge case, we might want the others. lister_uuid: Determine the list of origins listed from the lister with uuid timestamp: the mocked timestamp at which we're recording that the visits are being scheduled (defaults to the current time) scheduled_cooldown: the minimal interval before which we can schedule the same origin again failed_cooldown: the minimal interval before which we can reschedule a failed origin not_found_cooldown: the minimal interval before which we can reschedule a not_found origin tablesample: the percentage of the table on which we run the query (None: no sampling) """ ...
[docs] @remote_api_endpoint("visit_stats/upsert") def origin_visit_stats_upsert( self, origin_visit_stats: Iterable[OriginVisitStats] ) -> None: """Create a new origin visit stats """ ...
[docs] @remote_api_endpoint("visit_stats/get") def origin_visit_stats_get( self, ids: Iterable[Tuple[str, str]] ) -> List[OriginVisitStats]: """Retrieve the stats for an origin with a given visit type If some visit_stats are not found, they are filtered out of the result. So the output list may be of length inferior to the length of the input list. """ ...
[docs] @remote_api_endpoint("visit_scheduler/get") def visit_scheduler_queue_position_get(self,) -> Dict[str, datetime.datetime]: """Retrieve all current queue positions for the recurrent visit scheduler. Returns Mapping of visit type to their current queue position """ ...
[docs] @remote_api_endpoint("visit_scheduler/set") def visit_scheduler_queue_position_set( self, visit_type: str, position: datetime.datetime ) -> None: """Set the current queue position of the recurrent visit scheduler for `visit_type`. """ ...
[docs] @remote_api_endpoint("scheduler_metrics/update") def update_metrics( self, lister_id: Optional[UUID] = None, timestamp: Optional[datetime.datetime] = None, ) -> List[SchedulerMetrics]: """Update the performance metrics of this scheduler instance. Returns the updated metrics. Args: lister_id: if passed, update the metrics only for this lister instance timestamp: if passed, the date at which we're updating the metrics, defaults to the database NOW() """ ...
[docs] @remote_api_endpoint("scheduler_metrics/get") def get_metrics( self, lister_id: Optional[UUID] = None, visit_type: Optional[str] = None ) -> List[SchedulerMetrics]: """Retrieve the performance metrics of this scheduler instance. Args: lister_id: filter the metrics for this lister instance only visit_type: filter the metrics for this visit type only """ ...