mirror of
https://github.com/ArchiveBox/ArchiveBox
synced 2024-11-25 05:30:23 +00:00
add new core and crawsl statemachine manager
This commit is contained in:
parent
41efd010f0
commit
48f8416762
18 changed files with 798 additions and 374 deletions
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@ -44,16 +44,17 @@ class ActorType(ABC, Generic[ModelType]):
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launch_kwargs: LaunchKwargs = {}
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mode: Literal['thread', 'process'] = 'process'
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MAX_CONCURRENT_ACTORS: ClassVar[int] = min(max(2, int(cpu_count() * 0.6)), 8) # min 2, max 8, up to 60% of available cpu cores
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MAX_TICK_TIME: ClassVar[int] = 60 # maximum duration in seconds to process a single object
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QUERYSET: ClassVar[QuerySet] # the QuerySet to claim objects from
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CLAIM_WHERE: ClassVar[str] = 'status = "queued"' # the WHERE clause to filter the objects when atomically getting the next object from the queue
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CLAIM_SET: ClassVar[str] = 'status = "started"' # the SET clause to claim the object when atomically getting the next object from the queue
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CLAIM_ORDER: ClassVar[str] = 'created_at DESC' # the ORDER BY clause to sort the objects with when atomically getting the next object from the queue
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CLAIM_FROM_TOP: ClassVar[int] = 50 # the number of objects to consider when atomically getting the next object from the queue
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CLAIM_FROM_TOP: ClassVar[int] = MAX_CONCURRENT_ACTORS * 10 # the number of objects to consider when atomically getting the next object from the queue
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ATOMIC: ClassVar[bool] = True # whether to atomically fetch+claim the nextobject in one step, or fetch and lock it in two steps
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# model_type: Type[ModelType]
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MAX_CONCURRENT_ACTORS: ClassVar[int] = min(max(2, int(cpu_count() * 0.6)), 8) # min 2, max 8, up to 60% of available cpu cores
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MAX_TICK_TIME: ClassVar[int] = 60 # maximum duration in seconds to process a single object
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_SPAWNED_ACTOR_PIDS: ClassVar[list[psutil.Process]] = [] # record all the pids of Actors spawned by this class
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@ -89,18 +90,19 @@ class ActorType(ABC, Generic[ModelType]):
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@classmethod
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def get_actors_to_spawn(cls, queue: QuerySet, running_actors: list[int]) -> list[LaunchKwargs]:
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"""Get a list of launch kwargs for the number of actors to spawn based on the queue and currently running actors"""
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queue_length = queue.count()
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if not queue_length: # queue is empty, spawn 0 actors
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return []
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actors_to_spawn: list[LaunchKwargs] = []
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max_spawnable = cls.MAX_CONCURRENT_ACTORS - len(running_actors)
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queue_length = queue.count()
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# spawning new actors is expensive, avoid spawning all the actors at once. To stagger them,
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# let the next orchestrator tick handle starting another 2 on the next tick()
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# if queue_length > 10: # queue is long, spawn as many as possible
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# actors_to_spawn += max_spawnable * [{}]
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if not queue_length: # queue is empty, spawn 0 actors
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return actors_to_spawn
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elif queue_length > 4: # queue is medium, spawn 1 or 2 actors
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if queue_length > 4: # queue is medium, spawn 1 or 2 actors
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actors_to_spawn += min(2, max_spawnable) * [{**cls.launch_kwargs}]
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else: # queue is short, spawn 1 actor
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actors_to_spawn += min(1, max_spawnable) * [{**cls.launch_kwargs}]
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@ -144,7 +146,6 @@ class ActorType(ABC, Generic[ModelType]):
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# return ArchiveResult.objects.filter(status='queued', extractor__in=('pdf', 'dom', 'screenshot'))
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return cls.QUERYSET
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### Instance Methods: Called by Actor after it has been spawned (i.e. forked as a thread or process)
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def runloop(self):
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@ -1,286 +0,0 @@
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__package__ = 'archivebox.actors'
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import os
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import time
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from typing import ClassVar, Generic, cast, Literal, Type
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from django.utils.functional import classproperty
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from rich import print
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import psutil
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from django import db
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from django.db.models import QuerySet
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from multiprocessing import Process, cpu_count
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from threading import Thread, get_native_id
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from crawls.models import Crawl
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from .actor import ActorType, LaunchKwargs
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class CrawlActor(ActorType[Crawl]):
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QUERYSET: ClassVar[QuerySet] = Crawl.objects.filter(status='queued')
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CLAIM_WHERE: ClassVar[str] = 'status = "queued"' # the WHERE clause to filter the objects when atomically getting the next object from the queue
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CLAIM_SET: ClassVar[str] = 'status = "started"' # the SET clause to claim the object when atomically getting the next object from the queue
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CLAIM_ORDER: ClassVar[str] = 'created_at DESC' # the ORDER BY clause to sort the objects with when atomically getting the next object from the queue
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CLAIM_FROM_TOP: ClassVar[int] = 50 # the number of objects to consider when atomically getting the next object from the queue
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# model_type: Type[ModelType]
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MAX_CONCURRENT_ACTORS: ClassVar[int] = min(max(2, int(cpu_count() * 0.6)), 8) # min 2, max 8, up to 60% of available cpu cores
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MAX_TICK_TIME: ClassVar[int] = 60 # maximum duration in seconds to process a single object
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_SPAWNED_ACTOR_PIDS: ClassVar[list[psutil.Process]] = [] # record all the pids of Actors spawned by this class
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def __init__(self, mode: Literal['thread', 'process']|None=None, **launch_kwargs: LaunchKwargs):
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self.mode = mode or self.mode
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self.launch_kwargs = launch_kwargs or dict(self.launch_kwargs)
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@classproperty
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def name(cls) -> str:
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return cls.__name__ # type: ignore
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def __str__(self) -> str:
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return self.__repr__()
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def __repr__(self) -> str:
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"""FaviconActor[pid=1234]"""
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label = 'pid' if self.mode == 'process' else 'tid'
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return f'[underline]{self.name}[/underline]\\[{label}={self.pid}]'
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### Class Methods: Called by Orchestrator on ActorType class before it has been spawned
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@classmethod
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def get_running_actors(cls) -> list[int]:
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"""returns a list of pids of all running actors of this type"""
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# WARNING: only works for process actors, not thread actors
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if cls.mode == 'thread':
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raise NotImplementedError('get_running_actors() is not implemented for thread actors')
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return [
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proc.pid for proc in cls._SPAWNED_ACTOR_PIDS
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if proc.is_running() and proc.status() != 'zombie'
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]
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@classmethod
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def get_actors_to_spawn(cls, queue: QuerySet, running_actors: list[int]) -> list[LaunchKwargs]:
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"""Get a list of launch kwargs for the number of actors to spawn based on the queue and currently running actors"""
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actors_to_spawn: list[LaunchKwargs] = []
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max_spawnable = cls.MAX_CONCURRENT_ACTORS - len(running_actors)
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queue_length = queue.count()
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# spawning new actors is expensive, avoid spawning all the actors at once. To stagger them,
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# let the next orchestrator tick handle starting another 2 on the next tick()
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# if queue_length > 10: # queue is long, spawn as many as possible
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# actors_to_spawn += max_spawnable * [{}]
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if not queue_length: # queue is empty, spawn 0 actors
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return actors_to_spawn
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elif queue_length > 4: # queue is medium, spawn 1 or 2 actors
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actors_to_spawn += min(2, max_spawnable) * [{**cls.launch_kwargs}]
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else: # queue is short, spawn 1 actor
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actors_to_spawn += min(1, max_spawnable) * [{**cls.launch_kwargs}]
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return actors_to_spawn
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@classmethod
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def start(cls, mode: Literal['thread', 'process']='process', **launch_kwargs: LaunchKwargs) -> int:
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if mode == 'thread':
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return cls.fork_actor_as_thread(**launch_kwargs)
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elif mode == 'process':
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return cls.fork_actor_as_process(**launch_kwargs)
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raise ValueError(f'Invalid actor mode: {mode} must be "thread" or "process"')
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@classmethod
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def fork_actor_as_thread(cls, **launch_kwargs: LaunchKwargs) -> int:
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"""Spawn a new background thread running the actor's runloop"""
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actor = cls(mode='thread', **launch_kwargs)
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bg_actor_thread = Thread(target=actor.runloop)
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bg_actor_thread.start()
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assert bg_actor_thread.native_id is not None
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return bg_actor_thread.native_id
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@classmethod
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def fork_actor_as_process(cls, **launch_kwargs: LaunchKwargs) -> int:
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"""Spawn a new background process running the actor's runloop"""
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actor = cls(mode='process', **launch_kwargs)
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bg_actor_process = Process(target=actor.runloop)
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bg_actor_process.start()
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assert bg_actor_process.pid is not None
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cls._SPAWNED_ACTOR_PIDS.append(psutil.Process(pid=bg_actor_process.pid))
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return bg_actor_process.pid
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@classmethod
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def get_model(cls) -> Type[ModelType]:
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# wish this was a @classproperty but Generic[ModelType] return type cant be statically inferred for @classproperty
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return cls.QUERYSET.model
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@classmethod
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def get_queue(cls) -> QuerySet:
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"""override this to provide your queryset as the queue"""
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# return ArchiveResult.objects.filter(status='queued', extractor__in=('pdf', 'dom', 'screenshot'))
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return cls.QUERYSET
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### Instance Methods: Called by Actor after it has been spawned (i.e. forked as a thread or process)
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def runloop(self):
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"""The main runloop that starts running when the actor is spawned (as subprocess or thread) and exits when the queue is empty"""
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self.on_startup()
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try:
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while True:
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obj_to_process: ModelType | None = None
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try:
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obj_to_process = cast(ModelType, self.get_next(atomic=self.atomic))
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except Exception:
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pass
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if obj_to_process:
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self.idle_count = 0 # reset idle count if we got an object
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else:
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if self.idle_count >= 30:
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break # stop looping and exit if queue is empty and we have idled for 30sec
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else:
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# print('Actor runloop()', f'pid={self.pid}', 'queue empty, rechecking...')
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self.idle_count += 1
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time.sleep(1)
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continue
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self.on_tick_start(obj_to_process)
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# Process the object
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try:
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self.tick(obj_to_process)
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except Exception as err:
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print(f'[red]🏃♂️ ERROR: {self}.tick()[/red]', err)
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db.connections.close_all() # always reset the db connection after an exception to clear any pending transactions
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self.on_tick_exception(obj_to_process, err)
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finally:
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self.on_tick_end(obj_to_process)
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self.on_shutdown(err=None)
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except BaseException as err:
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if isinstance(err, KeyboardInterrupt):
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print()
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else:
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print(f'\n[red]🏃♂️ {self}.runloop() FATAL:[/red]', err.__class__.__name__, err)
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self.on_shutdown(err=err)
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def get_next(self, atomic: bool | None=None) -> ModelType | None:
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"""get the next object from the queue, atomically locking it if self.atomic=True"""
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if atomic is None:
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atomic = self.ATOMIC
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if atomic:
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# fetch and claim the next object from in the queue in one go atomically
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obj = self.get_next_atomic()
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else:
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# two-step claim: fetch the next object and lock it in a separate query
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obj = self.get_queue().last()
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assert obj and self.lock_next(obj), f'Unable to fetch+lock the next {self.get_model().__name__} ojbect from {self}.QUEUE'
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return obj
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def lock_next(self, obj: ModelType) -> bool:
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"""override this to implement a custom two-step (non-atomic)lock mechanism"""
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# For example:
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# assert obj._model.objects.filter(pk=obj.pk, status='queued').update(status='started', locked_by=self.pid)
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# Not needed if using get_next_and_lock() to claim the object atomically
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# print(f'[blue]🏃♂️ {self}.lock()[/blue]', obj.abid or obj.id)
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return True
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def claim_sql_where(self) -> str:
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"""override this to implement a custom WHERE clause for the atomic claim step e.g. "status = 'queued' AND locked_by = NULL" """
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return self.CLAIM_WHERE
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def claim_sql_set(self) -> str:
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"""override this to implement a custom SET clause for the atomic claim step e.g. "status = 'started' AND locked_by = {self.pid}" """
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return self.CLAIM_SET
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def claim_sql_order(self) -> str:
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"""override this to implement a custom ORDER BY clause for the atomic claim step e.g. "created_at DESC" """
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return self.CLAIM_ORDER
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def claim_from_top(self) -> int:
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"""override this to implement a custom number of objects to consider when atomically claiming the next object from the top of the queue"""
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return self.CLAIM_FROM_TOP
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def get_next_atomic(self, shallow: bool=True) -> ModelType | None:
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"""
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claim a random object from the top n=50 objects in the queue (atomically updates status=queued->started for claimed object)
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optimized for minimizing contention on the queue with other actors selecting from the same list
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slightly faster than claim_any_obj() which selects randomly from the entire queue but needs to know the total count
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"""
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Model = self.get_model() # e.g. ArchiveResult
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table = f'{Model._meta.app_label}_{Model._meta.model_name}' # e.g. core_archiveresult
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where_sql = self.claim_sql_where()
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set_sql = self.claim_sql_set()
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order_by_sql = self.claim_sql_order()
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choose_from_top = self.claim_from_top()
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with db.connection.cursor() as cursor:
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# subquery gets the pool of the top 50 candidates sorted by sort and order
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# main query selects a random one from that pool
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cursor.execute(f"""
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UPDATE {table}
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SET {set_sql}
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WHERE {where_sql} and id = (
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SELECT id FROM (
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SELECT id FROM {table}
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WHERE {where_sql}
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ORDER BY {order_by_sql}
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LIMIT {choose_from_top}
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) candidates
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ORDER BY RANDOM()
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LIMIT 1
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)
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RETURNING id;
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""")
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result = cursor.fetchone()
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if result is None:
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return None # If no rows were claimed, return None
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if shallow:
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# shallow: faster, returns potentially incomplete object instance missing some django auto-populated fields:
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columns = [col[0] for col in cursor.description or ['id']]
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return Model(**dict(zip(columns, result)))
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# if not shallow do one extra query to get a more complete object instance (load it fully from scratch)
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return Model.objects.get(id=result[0])
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@abstractmethod
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def tick(self, obj: ModelType) -> None:
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"""override this to process the object"""
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print(f'[blue]🏃♂️ {self}.tick()[/blue]', obj.abid or obj.id)
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# For example:
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# do_some_task(obj)
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# do_something_else(obj)
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# obj._model.objects.filter(pk=obj.pk, status='started').update(status='success')
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raise NotImplementedError('tick() must be implemented by the Actor subclass')
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def on_startup(self) -> None:
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if self.mode == 'thread':
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self.pid = get_native_id() # thread id
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print(f'[green]🏃♂️ {self}.on_startup() STARTUP (THREAD)[/green]')
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else:
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self.pid = os.getpid() # process id
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print(f'[green]🏃♂️ {self}.on_startup() STARTUP (PROCESS)[/green]')
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# abx.pm.hook.on_actor_startup(self)
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def on_shutdown(self, err: BaseException | None=None) -> None:
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print(f'[grey53]🏃♂️ {self}.on_shutdown() SHUTTING DOWN[/grey53]', err or '[green](gracefully)[/green]')
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# abx.pm.hook.on_actor_shutdown(self)
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def on_tick_start(self, obj: ModelType) -> None:
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# print(f'🏃♂️ {self}.on_tick_start()', obj.abid or obj.id)
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# abx.pm.hook.on_actor_tick_start(self, obj_to_process)
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# self.timer = TimedProgress(self.MAX_TICK_TIME, prefix=' ')
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pass
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def on_tick_end(self, obj: ModelType) -> None:
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# print(f'🏃♂️ {self}.on_tick_end()', obj.abid or obj.id)
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# abx.pm.hook.on_actor_tick_end(self, obj_to_process)
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# self.timer.end()
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pass
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def on_tick_exception(self, obj: ModelType, err: BaseException) -> None:
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print(f'[red]🏃♂️ {self}.on_tick_exception()[/red]', obj.abid or obj.id, err)
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# abx.pm.hook.on_actor_tick_exception(self, obj_to_process, err)
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@ -3,8 +3,7 @@ __package__ = 'archivebox.actors'
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import os
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import time
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import itertools
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import uuid
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from typing import Dict, Type, Literal
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from typing import Dict, Type, Literal, ClassVar
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from django.utils.functional import classproperty
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from multiprocessing import Process, cpu_count
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@ -173,54 +172,36 @@ from django import db
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from django.db import connection
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from crawls.actors import CrawlActor
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from .actor_snapshot import SnapshotActor
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from abx_plugin_singlefile.actors import SinglefileActor
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class FaviconActor(ActorType[ArchiveResult]):
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@classmethod
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def get_queue(cls) -> QuerySet[ArchiveResult]:
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return ArchiveResult.objects.filter(status='failed', extractor='favicon')
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CLAIM_ORDER: ClassVar[str] = 'created_at DESC'
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CLAIM_WHERE: ClassVar[str] = 'status = "queued" AND extractor = "favicon"'
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CLAIM_SET: ClassVar[str] = 'status = "started"'
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@classmethod
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def get_next(cls) -> ArchiveResult | None:
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# return cls.get_next_atomic(
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# model=ArchiveResult,
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# where='status = "failed"',
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# set='status = "started"',
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# order_by='created_at DESC',
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# choose_from_top=cpu_count() * 10,
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# )
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return cls.get_random(
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model=ArchiveResult,
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where='status = "failed" AND extractor = "favicon"',
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set='status = "queued"',
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choose_from_top=50,
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)
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@classproperty
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def QUERYSET(cls) -> QuerySet:
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return ArchiveResult.objects.filter(status='failed', extractor='favicon')
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def tick(self, obj: ArchiveResult):
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print(f'[grey53]{self}.tick({obj.abid or obj.id}, status={obj.status}) remaining:[/grey53]', self.get_queue().count())
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updated = ArchiveResult.objects.filter(id=obj.id, status='started').update(status='success') == 1
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if not updated:
|
||||
raise Exception(f'Failed to update {obj.abid or obj.id}, interrupted by another actor writing to the same object')
|
||||
# obj.refresh_from_db()
|
||||
obj.status = 'success'
|
||||
|
||||
def lock(self, obj: ArchiveResult) -> bool:
|
||||
"""As an alternative to self.get_next_atomic(), we can use select_for_update() or manually update a semaphore field here"""
|
||||
|
||||
locked = ArchiveResult.objects.filter(id=obj.id, status='queued').update(status='started') == 1
|
||||
if locked:
|
||||
# obj.refresh_from_db()
|
||||
obj.status = 'started'
|
||||
# print(f'FaviconActor[{self.pid}] lock({obj.id}) 🔒')
|
||||
pass
|
||||
else:
|
||||
print(f'FaviconActor[{self.pid}] lock({obj.id}) X')
|
||||
return locked
|
||||
obj.refresh_from_db()
|
||||
obj.save()
|
||||
|
||||
|
||||
class ExtractorsOrchestrator(Orchestrator):
|
||||
actor_types = {
|
||||
'CrawlActor': CrawlActor,
|
||||
'SnapshotActor': SnapshotActor,
|
||||
'FaviconActor': FaviconActor,
|
||||
'SinglefileActor': SinglefileActor,
|
||||
}
|
||||
|
||||
|
||||
|
|
286
archivebox/actors/statemachine.py
Normal file
286
archivebox/actors/statemachine.py
Normal file
|
@ -0,0 +1,286 @@
|
|||
from statemachine import State, StateMachine
|
||||
from django.db import models
|
||||
from multiprocessing import Process
|
||||
import psutil
|
||||
import time
|
||||
|
||||
# State Machine Definitions
|
||||
#################################################
|
||||
|
||||
class SnapshotMachine(StateMachine):
|
||||
"""State machine for managing Snapshot lifecycle."""
|
||||
|
||||
# States
|
||||
queued = State(initial=True)
|
||||
started = State()
|
||||
sealed = State(final=True)
|
||||
|
||||
# Transitions
|
||||
start = queued.to(started, cond='can_start')
|
||||
seal = started.to(sealed, cond='is_finished')
|
||||
|
||||
# Events
|
||||
tick = (
|
||||
queued.to.itself(unless='can_start') |
|
||||
queued.to(started, cond='can_start') |
|
||||
started.to.itself(unless='is_finished') |
|
||||
started.to(sealed, cond='is_finished')
|
||||
)
|
||||
|
||||
def __init__(self, snapshot):
|
||||
self.snapshot = snapshot
|
||||
super().__init__()
|
||||
|
||||
def can_start(self):
|
||||
return True
|
||||
|
||||
def is_finished(self):
|
||||
return not self.snapshot.has_pending_archiveresults()
|
||||
|
||||
def before_start(self):
|
||||
"""Pre-start validation and setup."""
|
||||
self.snapshot.cleanup_dir()
|
||||
|
||||
def after_start(self):
|
||||
"""Post-start side effects."""
|
||||
self.snapshot.create_pending_archiveresults()
|
||||
self.snapshot.update_indices()
|
||||
self.snapshot.bump_retry_at(seconds=10)
|
||||
|
||||
def before_seal(self):
|
||||
"""Pre-seal validation and cleanup."""
|
||||
self.snapshot.cleanup_dir()
|
||||
|
||||
def after_seal(self):
|
||||
"""Post-seal actions."""
|
||||
self.snapshot.update_indices()
|
||||
self.snapshot.seal_dir()
|
||||
self.snapshot.upload_dir()
|
||||
self.snapshot.retry_at = None
|
||||
self.snapshot.save()
|
||||
|
||||
|
||||
class ArchiveResultMachine(StateMachine):
|
||||
"""State machine for managing ArchiveResult lifecycle."""
|
||||
|
||||
# States
|
||||
queued = State(initial=True)
|
||||
started = State()
|
||||
succeeded = State(final=True)
|
||||
backoff = State()
|
||||
failed = State(final=True)
|
||||
|
||||
# Transitions
|
||||
start = queued.to(started, cond='can_start')
|
||||
succeed = started.to(succeeded, cond='extractor_succeeded')
|
||||
backoff = started.to(backoff, unless='extractor_succeeded')
|
||||
retry = backoff.to(queued, cond='can_retry')
|
||||
fail = backoff.to(failed, unless='can_retry')
|
||||
|
||||
# Events
|
||||
tick = (
|
||||
queued.to.itself(unless='can_start') |
|
||||
queued.to(started, cond='can_start') |
|
||||
started.to.itself(cond='extractor_still_running') |
|
||||
started.to(succeeded, cond='extractor_succeeded') |
|
||||
started.to(backoff, unless='extractor_succeeded') |
|
||||
backoff.to.itself(cond='still_waiting_to_retry') |
|
||||
backoff.to(queued, cond='can_retry') |
|
||||
backoff.to(failed, unless='can_retry')
|
||||
)
|
||||
|
||||
def __init__(self, archiveresult):
|
||||
self.archiveresult = archiveresult
|
||||
super().__init__()
|
||||
|
||||
def can_start(self):
|
||||
return True
|
||||
|
||||
def extractor_still_running(self):
|
||||
return self.archiveresult.start_ts > time.now() - timedelta(seconds=5)
|
||||
|
||||
def extractor_succeeded(self):
|
||||
# return check_if_extractor_succeeded(self.archiveresult)
|
||||
return self.archiveresult.start_ts < time.now() - timedelta(seconds=5)
|
||||
|
||||
def can_retry(self):
|
||||
return self.archiveresult.retries < self.archiveresult.max_retries
|
||||
|
||||
def before_start(self):
|
||||
"""Pre-start initialization."""
|
||||
self.archiveresult.retries += 1
|
||||
self.archiveresult.start_ts = time.now()
|
||||
self.archiveresult.output = None
|
||||
self.archiveresult.error = None
|
||||
|
||||
def after_start(self):
|
||||
"""Post-start execution."""
|
||||
self.archiveresult.bump_retry_at(seconds=self.archiveresult.timeout + 5)
|
||||
execute_extractor(self.archiveresult)
|
||||
self.archiveresult.snapshot.bump_retry_at(seconds=5)
|
||||
|
||||
def before_succeed(self):
|
||||
"""Pre-success validation."""
|
||||
self.archiveresult.output = get_archiveresult_output(self.archiveresult)
|
||||
|
||||
def after_succeed(self):
|
||||
"""Post-success cleanup."""
|
||||
self.archiveresult.end_ts = time.now()
|
||||
self.archiveresult.retry_at = None
|
||||
self.archiveresult.update_indices()
|
||||
|
||||
def before_backoff(self):
|
||||
"""Pre-backoff error capture."""
|
||||
self.archiveresult.error = get_archiveresult_error(self.archiveresult)
|
||||
|
||||
def after_backoff(self):
|
||||
"""Post-backoff retry scheduling."""
|
||||
self.archiveresult.end_ts = time.now()
|
||||
self.archiveresult.bump_retry_at(
|
||||
seconds=self.archiveresult.timeout * self.archiveresult.retries
|
||||
)
|
||||
self.archiveresult.update_indices()
|
||||
|
||||
def before_fail(self):
|
||||
"""Pre-failure finalization."""
|
||||
self.archiveresult.retry_at = None
|
||||
|
||||
def after_fail(self):
|
||||
"""Post-failure cleanup."""
|
||||
self.archiveresult.update_indices()
|
||||
|
||||
# Models
|
||||
#################################################
|
||||
|
||||
class Snapshot(models.Model):
|
||||
status = models.CharField(max_length=32, default='queued')
|
||||
retry_at = models.DateTimeField(null=True)
|
||||
|
||||
@property
|
||||
def sm(self):
|
||||
"""Get the state machine for this snapshot."""
|
||||
return SnapshotMachine(self)
|
||||
|
||||
def has_pending_archiveresults(self):
|
||||
return self.archiveresult_set.exclude(
|
||||
status__in=['succeeded', 'failed']
|
||||
).exists()
|
||||
|
||||
def bump_retry_at(self, seconds):
|
||||
self.retry_at = time.now() + timedelta(seconds=seconds)
|
||||
self.save()
|
||||
|
||||
def cleanup_dir(self):
|
||||
cleanup_snapshot_dir(self)
|
||||
|
||||
def create_pending_archiveresults(self):
|
||||
create_snapshot_pending_archiveresults(self)
|
||||
|
||||
def update_indices(self):
|
||||
update_snapshot_index_json(self)
|
||||
update_snapshot_index_html(self)
|
||||
|
||||
def seal_dir(self):
|
||||
seal_snapshot_dir(self)
|
||||
|
||||
def upload_dir(self):
|
||||
upload_snapshot_dir(self)
|
||||
|
||||
|
||||
class ArchiveResult(models.Model):
|
||||
snapshot = models.ForeignKey(Snapshot, on_delete=models.CASCADE)
|
||||
status = models.CharField(max_length=32, default='queued')
|
||||
retry_at = models.DateTimeField(null=True)
|
||||
retries = models.IntegerField(default=0)
|
||||
max_retries = models.IntegerField(default=3)
|
||||
timeout = models.IntegerField(default=60)
|
||||
start_ts = models.DateTimeField(null=True)
|
||||
end_ts = models.DateTimeField(null=True)
|
||||
output = models.TextField(null=True)
|
||||
error = models.TextField(null=True)
|
||||
|
||||
def get_machine(self):
|
||||
return ArchiveResultMachine(self)
|
||||
|
||||
def bump_retry_at(self, seconds):
|
||||
self.retry_at = time.now() + timedelta(seconds=seconds)
|
||||
self.save()
|
||||
|
||||
def update_indices(self):
|
||||
update_archiveresult_index_json(self)
|
||||
update_archiveresult_index_html(self)
|
||||
|
||||
|
||||
# Actor System
|
||||
#################################################
|
||||
|
||||
class BaseActor:
|
||||
MAX_TICK_TIME = 60
|
||||
|
||||
def tick(self, obj):
|
||||
"""Process a single object through its state machine."""
|
||||
machine = obj.get_machine()
|
||||
|
||||
if machine.is_queued:
|
||||
if machine.can_start():
|
||||
machine.start()
|
||||
|
||||
elif machine.is_started:
|
||||
if machine.can_seal():
|
||||
machine.seal()
|
||||
|
||||
elif machine.is_backoff:
|
||||
if machine.can_retry():
|
||||
machine.retry()
|
||||
else:
|
||||
machine.fail()
|
||||
|
||||
|
||||
class Orchestrator:
|
||||
"""Main orchestrator that manages all actors."""
|
||||
|
||||
def __init__(self):
|
||||
self.pid = None
|
||||
|
||||
@classmethod
|
||||
def spawn(cls):
|
||||
orchestrator = cls()
|
||||
proc = Process(target=orchestrator.runloop)
|
||||
proc.start()
|
||||
return proc.pid
|
||||
|
||||
def runloop(self):
|
||||
self.pid = os.getpid()
|
||||
abx.pm.hook.on_orchestrator_startup(self)
|
||||
|
||||
try:
|
||||
while True:
|
||||
self.process_queue(Snapshot)
|
||||
self.process_queue(ArchiveResult)
|
||||
time.sleep(0.1)
|
||||
|
||||
except (KeyboardInterrupt, SystemExit):
|
||||
abx.pm.hook.on_orchestrator_shutdown(self)
|
||||
|
||||
def process_queue(self, model):
|
||||
retry_at_reached = Q(retry_at__isnull=True) | Q(retry_at__lte=time.now())
|
||||
queue = model.objects.filter(retry_at_reached)
|
||||
|
||||
if queue.exists():
|
||||
actor = BaseActor()
|
||||
for obj in queue:
|
||||
try:
|
||||
with transaction.atomic():
|
||||
actor.tick(obj)
|
||||
except Exception as e:
|
||||
abx.pm.hook.on_actor_tick_exception(actor, obj, e)
|
||||
|
||||
|
||||
# Periodic Tasks
|
||||
#################################################
|
||||
|
||||
@djhuey.periodic_task(schedule=djhuey.crontab(minute='*'))
|
||||
def ensure_orchestrator_running():
|
||||
"""Ensure orchestrator is running, start if not."""
|
||||
if not any(p.name().startswith('Orchestrator') for p in psutil.process_iter()):
|
||||
Orchestrator.spawn()
|
73
archivebox/core/actors.py
Normal file
73
archivebox/core/actors.py
Normal file
|
@ -0,0 +1,73 @@
|
|||
__package__ = 'archivebox.core'
|
||||
|
||||
from typing import ClassVar
|
||||
|
||||
from rich import print
|
||||
|
||||
from django.db.models import QuerySet
|
||||
from django.utils import timezone
|
||||
from datetime import timedelta
|
||||
from core.models import Snapshot
|
||||
|
||||
from actors.actor import ActorType
|
||||
|
||||
|
||||
class SnapshotActor(ActorType[Snapshot]):
|
||||
|
||||
QUERYSET: ClassVar[QuerySet] = Snapshot.objects.filter(status='queued')
|
||||
CLAIM_WHERE: ClassVar[str] = 'status = "queued"' # the WHERE clause to filter the objects when atomically getting the next object from the queue
|
||||
CLAIM_SET: ClassVar[str] = 'status = "started"' # the SET clause to claim the object when atomically getting the next object from the queue
|
||||
CLAIM_ORDER: ClassVar[str] = 'created_at DESC' # the ORDER BY clause to sort the objects with when atomically getting the next object from the queue
|
||||
CLAIM_FROM_TOP: ClassVar[int] = 50 # the number of objects to consider when atomically getting the next object from the queue
|
||||
|
||||
# model_type: Type[ModelType]
|
||||
MAX_CONCURRENT_ACTORS: ClassVar[int] = 4 # min 2, max 8, up to 60% of available cpu cores
|
||||
MAX_TICK_TIME: ClassVar[int] = 60 # maximum duration in seconds to process a single object
|
||||
|
||||
def claim_sql_where(self) -> str:
|
||||
"""override this to implement a custom WHERE clause for the atomic claim step e.g. "status = 'queued' AND locked_by = NULL" """
|
||||
return self.CLAIM_WHERE
|
||||
|
||||
def claim_sql_set(self) -> str:
|
||||
"""override this to implement a custom SET clause for the atomic claim step e.g. "status = 'started' AND locked_by = {self.pid}" """
|
||||
retry_at = timezone.now() + timedelta(seconds=self.MAX_TICK_TIME)
|
||||
# format as 2024-10-31 10:14:33.240903
|
||||
retry_at_str = retry_at.strftime('%Y-%m-%d %H:%M:%S.%f')
|
||||
return f'{self.CLAIM_SET}, retry_at = {retry_at_str}'
|
||||
|
||||
def claim_sql_order(self) -> str:
|
||||
"""override this to implement a custom ORDER BY clause for the atomic claim step e.g. "created_at DESC" """
|
||||
return self.CLAIM_ORDER
|
||||
|
||||
def claim_from_top(self) -> int:
|
||||
"""override this to implement a custom number of objects to consider when atomically claiming the next object from the top of the queue"""
|
||||
return self.CLAIM_FROM_TOP
|
||||
|
||||
def tick(self, obj: Snapshot) -> None:
|
||||
"""override this to process the object"""
|
||||
print(f'[blue]🏃♂️ {self}.tick()[/blue]', obj.abid or obj.id)
|
||||
# For example:
|
||||
# do_some_task(obj)
|
||||
# do_something_else(obj)
|
||||
# obj._model.objects.filter(pk=obj.pk, status='started').update(status='success')
|
||||
# raise NotImplementedError('tick() must be implemented by the Actor subclass')
|
||||
|
||||
def on_shutdown(self, err: BaseException | None=None) -> None:
|
||||
print(f'[grey53]🏃♂️ {self}.on_shutdown() SHUTTING DOWN[/grey53]', err or '[green](gracefully)[/green]')
|
||||
# abx.pm.hook.on_actor_shutdown(self)
|
||||
|
||||
def on_tick_start(self, obj: Snapshot) -> None:
|
||||
# print(f'🏃♂️ {self}.on_tick_start()', obj.abid or obj.id)
|
||||
# abx.pm.hook.on_actor_tick_start(self, obj_to_process)
|
||||
# self.timer = TimedProgress(self.MAX_TICK_TIME, prefix=' ')
|
||||
pass
|
||||
|
||||
def on_tick_end(self, obj: Snapshot) -> None:
|
||||
# print(f'🏃♂️ {self}.on_tick_end()', obj.abid or obj.id)
|
||||
# abx.pm.hook.on_actor_tick_end(self, obj_to_process)
|
||||
# self.timer.end()
|
||||
pass
|
||||
|
||||
def on_tick_exception(self, obj: Snapshot, err: BaseException) -> None:
|
||||
print(f'[red]🏃♂️ {self}.on_tick_exception()[/red]', obj.abid or obj.id, err)
|
||||
# abx.pm.hook.on_actor_tick_exception(self, obj_to_process, err)
|
|
@ -8,21 +8,25 @@ import os
|
|||
import json
|
||||
|
||||
from pathlib import Path
|
||||
from datetime import timedelta
|
||||
|
||||
from django.db import models
|
||||
from django.utils.functional import cached_property
|
||||
from django.utils.text import slugify
|
||||
from django.utils import timezone
|
||||
from django.core.cache import cache
|
||||
from django.urls import reverse, reverse_lazy
|
||||
from django.db.models import Case, When, Value, IntegerField
|
||||
from django.contrib import admin
|
||||
from django.conf import settings
|
||||
|
||||
from statemachine.mixins import MachineMixin
|
||||
|
||||
from archivebox.config import CONSTANTS
|
||||
|
||||
from abid_utils.models import ABIDModel, ABIDField, AutoDateTimeField
|
||||
from queues.tasks import bg_archive_snapshot
|
||||
# from crawls.models import Crawl
|
||||
from crawls.models import Crawl
|
||||
# from machine.models import Machine, NetworkInterface
|
||||
|
||||
from archivebox.misc.system import get_dir_size
|
||||
|
@ -152,7 +156,7 @@ class SnapshotManager(models.Manager):
|
|||
return super().get_queryset().prefetch_related('tags', 'archiveresult_set') # .annotate(archiveresult_count=models.Count('archiveresult')).distinct()
|
||||
|
||||
|
||||
class Snapshot(ABIDModel):
|
||||
class Snapshot(ABIDModel, MachineMixin):
|
||||
abid_prefix = 'snp_'
|
||||
abid_ts_src = 'self.created_at'
|
||||
abid_uri_src = 'self.url'
|
||||
|
@ -160,6 +164,17 @@ class Snapshot(ABIDModel):
|
|||
abid_rand_src = 'self.id'
|
||||
abid_drift_allowed = True
|
||||
|
||||
state_field_name = 'status'
|
||||
state_machine_name = 'core.statemachines.SnapshotMachine'
|
||||
state_machine_attr = 'sm'
|
||||
|
||||
class SnapshotStatus(models.TextChoices):
|
||||
QUEUED = 'queued', 'Queued'
|
||||
STARTED = 'started', 'Started'
|
||||
SEALED = 'sealed', 'Sealed'
|
||||
|
||||
status = models.CharField(max_length=15, default=SnapshotStatus.QUEUED, null=False, blank=False)
|
||||
|
||||
id = models.UUIDField(primary_key=True, default=None, null=False, editable=False, unique=True, verbose_name='ID')
|
||||
abid = ABIDField(prefix=abid_prefix)
|
||||
|
||||
|
@ -171,7 +186,7 @@ class Snapshot(ABIDModel):
|
|||
bookmarked_at = AutoDateTimeField(default=None, null=False, editable=True, db_index=True)
|
||||
downloaded_at = models.DateTimeField(default=None, null=True, editable=False, db_index=True, blank=True)
|
||||
|
||||
# crawl = models.ForeignKey(Crawl, on_delete=models.CASCADE, default=None, null=True, blank=True, related_name='snapshot_set')
|
||||
crawl = models.ForeignKey(Crawl, on_delete=models.CASCADE, default=None, null=True, blank=True, related_name='snapshot_set')
|
||||
|
||||
url = models.URLField(unique=True, db_index=True)
|
||||
timestamp = models.CharField(max_length=32, unique=True, db_index=True, editable=False)
|
||||
|
@ -397,6 +412,25 @@ class Snapshot(ABIDModel):
|
|||
self.tags.clear()
|
||||
self.tags.add(*tags_id)
|
||||
|
||||
def has_pending_archiveresults(self) -> bool:
|
||||
pending_statuses = [ArchiveResult.ArchiveResultStatus.QUEUED, ArchiveResult.ArchiveResultStatus.STARTED]
|
||||
pending_archiveresults = self.archiveresult_set.filter(status__in=pending_statuses)
|
||||
return pending_archiveresults.exists()
|
||||
|
||||
def create_pending_archiveresults(self) -> list['ArchiveResult']:
|
||||
archiveresults = []
|
||||
for extractor in EXTRACTORS:
|
||||
archiveresult, _created = ArchiveResult.objects.get_or_create(
|
||||
snapshot=self,
|
||||
extractor=extractor,
|
||||
status=ArchiveResult.ArchiveResultStatus.QUEUED,
|
||||
)
|
||||
archiveresults.append(archiveresult)
|
||||
return archiveresults
|
||||
|
||||
def bump_retry_at(self, seconds: int = 10):
|
||||
self.retry_at = timezone.now() + timedelta(seconds=seconds)
|
||||
|
||||
|
||||
# def get_storage_dir(self, create=True, symlink=True) -> Path:
|
||||
# date_str = self.bookmarked_at.strftime('%Y%m%d')
|
||||
|
@ -453,6 +487,20 @@ class ArchiveResult(ABIDModel):
|
|||
abid_rand_src = 'self.id'
|
||||
abid_drift_allowed = True
|
||||
|
||||
state_field_name = 'status'
|
||||
state_machine_name = 'core.statemachines.ArchiveResultMachine'
|
||||
state_machine_attr = 'sm'
|
||||
|
||||
class ArchiveResultStatus(models.TextChoices):
|
||||
QUEUED = 'queued', 'Queued'
|
||||
STARTED = 'started', 'Started'
|
||||
SUCCEEDED = 'succeeded', 'Succeeded'
|
||||
FAILED = 'failed', 'Failed'
|
||||
SKIPPED = 'skipped', 'Skipped'
|
||||
BACKOFF = 'backoff', 'Waiting to retry'
|
||||
|
||||
status = models.CharField(max_length=15, choices=ArchiveResultStatus.choices, default=ArchiveResultStatus.QUEUED, null=False, blank=False)
|
||||
|
||||
EXTRACTOR_CHOICES = (
|
||||
('htmltotext', 'htmltotext'),
|
||||
('git', 'git'),
|
||||
|
@ -469,11 +517,7 @@ class ArchiveResult(ABIDModel):
|
|||
('title', 'title'),
|
||||
('wget', 'wget'),
|
||||
)
|
||||
STATUS_CHOICES = [
|
||||
("succeeded", "succeeded"),
|
||||
("failed", "failed"),
|
||||
("skipped", "skipped")
|
||||
]
|
||||
|
||||
|
||||
id = models.UUIDField(primary_key=True, default=None, null=False, editable=False, unique=True, verbose_name='ID')
|
||||
abid = ABIDField(prefix=abid_prefix)
|
||||
|
@ -491,7 +535,6 @@ class ArchiveResult(ABIDModel):
|
|||
output = models.CharField(max_length=1024)
|
||||
start_ts = models.DateTimeField(db_index=True)
|
||||
end_ts = models.DateTimeField()
|
||||
status = models.CharField(max_length=16, choices=STATUS_CHOICES)
|
||||
|
||||
# the network interface that was used to download this result
|
||||
# uplink = models.ForeignKey(NetworkInterface, on_delete=models.SET_NULL, null=True, blank=True, verbose_name='Network Interface Used')
|
||||
|
@ -552,7 +595,15 @@ class ArchiveResult(ABIDModel):
|
|||
return link.canonical_outputs().get(f'{self.extractor}_path')
|
||||
|
||||
def output_exists(self) -> bool:
|
||||
return os.access(self.output_path(), os.R_OK)
|
||||
return os.path.exists(self.output_path())
|
||||
|
||||
def bump_retry_at(self, seconds: int = 10):
|
||||
self.retry_at = timezone.now() + timedelta(seconds=seconds)
|
||||
|
||||
def create_output_dir(self):
|
||||
snap_dir = self.snapshot_dir
|
||||
snap_dir.mkdir(parents=True, exist_ok=True)
|
||||
return snap_dir / self.output_path()
|
||||
|
||||
|
||||
# def get_storage_dir(self, create=True, symlink=True):
|
||||
|
|
|
@ -64,7 +64,8 @@ INSTALLED_APPS = [
|
|||
# 'abid_utils', # handles ABID ID creation, handling, and models
|
||||
'config', # ArchiveBox config settings (loaded as a plugin, don't need to add it here)
|
||||
'machine', # handles collecting and storing information about the host machine, network interfaces, installed binaries, etc.
|
||||
'queues', # handles starting and managing background workers and processes
|
||||
'actors', # handles starting and managing background workers and processes (orchestrators and actors)
|
||||
'queues', # handles starting and managing background workers and processes (supervisord)
|
||||
'seeds', # handles Seed model and URL source management
|
||||
'crawls', # handles Crawl and CrawlSchedule models and management
|
||||
'personas', # handles Persona and session management
|
||||
|
|
115
archivebox/core/statemachines.py
Normal file
115
archivebox/core/statemachines.py
Normal file
|
@ -0,0 +1,115 @@
|
|||
__package__ = 'archivebox.snapshots'
|
||||
|
||||
from django.utils import timezone
|
||||
|
||||
from statemachine import State, StateMachine
|
||||
|
||||
from core.models import Snapshot, ArchiveResult
|
||||
|
||||
# State Machine Definitions
|
||||
#################################################
|
||||
|
||||
|
||||
class SnapshotMachine(StateMachine, strict_states=True):
|
||||
"""State machine for managing Snapshot lifecycle."""
|
||||
|
||||
model: Snapshot
|
||||
|
||||
# States
|
||||
queued = State(value=Snapshot.SnapshotStatus.QUEUED, initial=True)
|
||||
started = State(value=Snapshot.SnapshotStatus.STARTED)
|
||||
sealed = State(value=Snapshot.SnapshotStatus.SEALED, final=True)
|
||||
|
||||
# Tick Event
|
||||
tick = (
|
||||
queued.to.itself(unless='can_start', internal=True) |
|
||||
queued.to(started, cond='can_start') |
|
||||
started.to.itself(unless='is_finished', internal=True) |
|
||||
started.to(sealed, cond='is_finished')
|
||||
)
|
||||
|
||||
def __init__(self, snapshot, *args, **kwargs):
|
||||
self.snapshot = snapshot
|
||||
super().__init__(snapshot, *args, **kwargs)
|
||||
|
||||
def can_start(self) -> bool:
|
||||
return self.snapshot.seed and self.snapshot.seed.uri
|
||||
|
||||
def is_finished(self) -> bool:
|
||||
return not self.snapshot.has_pending_archiveresults()
|
||||
|
||||
def on_started(self):
|
||||
self.snapshot.create_pending_archiveresults()
|
||||
self.snapshot.bump_retry_at(seconds=60)
|
||||
self.snapshot.save()
|
||||
|
||||
def on_sealed(self):
|
||||
self.snapshot.retry_at = None
|
||||
self.snapshot.save()
|
||||
|
||||
class ArchiveResultMachine(StateMachine, strict_states=True):
|
||||
"""State machine for managing ArchiveResult lifecycle."""
|
||||
|
||||
model: ArchiveResult
|
||||
|
||||
# States
|
||||
queued = State(value=ArchiveResult.ArchiveResultStatus.QUEUED, initial=True)
|
||||
started = State(value=ArchiveResult.ArchiveResultStatus.STARTED)
|
||||
backoff = State(value=ArchiveResult.ArchiveResultStatus.BACKOFF)
|
||||
succeeded = State(value=ArchiveResult.ArchiveResultStatus.SUCCEEDED, final=True)
|
||||
failed = State(value=ArchiveResult.ArchiveResultStatus.FAILED, final=True)
|
||||
|
||||
# Tick Event
|
||||
tick = (
|
||||
queued.to.itself(unless='can_start', internal=True) |
|
||||
queued.to(started, cond='can_start') |
|
||||
started.to.itself(unless='is_finished', internal=True) |
|
||||
started.to(succeeded, cond='is_succeeded') |
|
||||
started.to(failed, cond='is_failed') |
|
||||
started.to(backoff, cond='is_backoff') |
|
||||
backoff.to.itself(unless='can_start', internal=True) |
|
||||
backoff.to(started, cond='can_start') |
|
||||
backoff.to(succeeded, cond='is_succeeded') |
|
||||
backoff.to(failed, cond='is_failed')
|
||||
)
|
||||
|
||||
def __init__(self, archiveresult, *args, **kwargs):
|
||||
self.archiveresult = archiveresult
|
||||
super().__init__(archiveresult, *args, **kwargs)
|
||||
|
||||
def can_start(self) -> bool:
|
||||
return self.archiveresult.snapshot and self.archiveresult.snapshot.is_started()
|
||||
|
||||
def is_succeeded(self) -> bool:
|
||||
return self.archiveresult.output_exists()
|
||||
|
||||
def is_failed(self) -> bool:
|
||||
return not self.archiveresult.output_exists()
|
||||
|
||||
def is_backoff(self) -> bool:
|
||||
return self.archiveresult.status == ArchiveResult.ArchiveResultStatus.BACKOFF
|
||||
|
||||
def on_started(self):
|
||||
self.archiveresult.start_ts = timezone.now()
|
||||
self.archiveresult.create_output_dir()
|
||||
self.archiveresult.bump_retry_at(seconds=60)
|
||||
self.archiveresult.save()
|
||||
|
||||
def on_backoff(self):
|
||||
self.archiveresult.bump_retry_at(seconds=60)
|
||||
self.archiveresult.save()
|
||||
|
||||
def on_succeeded(self):
|
||||
self.archiveresult.end_ts = timezone.now()
|
||||
self.archiveresult.save()
|
||||
|
||||
def on_failed(self):
|
||||
self.archiveresult.end_ts = timezone.now()
|
||||
self.archiveresult.save()
|
||||
|
||||
def after_transition(self, event: str, source: State, target: State):
|
||||
print(f"after '{event}' from '{source.id}' to '{target.id}'")
|
||||
# self.archiveresult.save_merkle_index()
|
||||
# self.archiveresult.save_html_index()
|
||||
# self.archiveresult.save_json_index()
|
||||
return "after_transition"
|
69
archivebox/crawls/actors.py
Normal file
69
archivebox/crawls/actors.py
Normal file
|
@ -0,0 +1,69 @@
|
|||
__package__ = 'archivebox.crawls'
|
||||
|
||||
from typing import ClassVar
|
||||
|
||||
from rich import print
|
||||
|
||||
from django.db.models import QuerySet
|
||||
|
||||
from crawls.models import Crawl
|
||||
|
||||
from actors.actor import ActorType
|
||||
|
||||
|
||||
class CrawlActor(ActorType[Crawl]):
|
||||
|
||||
QUERYSET: ClassVar[QuerySet] = Crawl.objects.filter(status='queued')
|
||||
CLAIM_WHERE: ClassVar[str] = 'status = "queued"' # the WHERE clause to filter the objects when atomically getting the next object from the queue
|
||||
CLAIM_SET: ClassVar[str] = 'status = "started"' # the SET clause to claim the object when atomically getting the next object from the queue
|
||||
CLAIM_ORDER: ClassVar[str] = 'created_at DESC' # the ORDER BY clause to sort the objects with when atomically getting the next object from the queue
|
||||
CLAIM_FROM_TOP: ClassVar[int] = 50 # the number of objects to consider when atomically getting the next object from the queue
|
||||
|
||||
# model_type: Type[ModelType]
|
||||
MAX_CONCURRENT_ACTORS: ClassVar[int] = 4 # min 2, max 8, up to 60% of available cpu cores
|
||||
MAX_TICK_TIME: ClassVar[int] = 60 # maximum duration in seconds to process a single object
|
||||
|
||||
def claim_sql_where(self) -> str:
|
||||
"""override this to implement a custom WHERE clause for the atomic claim step e.g. "status = 'queued' AND locked_by = NULL" """
|
||||
return self.CLAIM_WHERE
|
||||
|
||||
def claim_sql_set(self) -> str:
|
||||
"""override this to implement a custom SET clause for the atomic claim step e.g. "status = 'started' AND locked_by = {self.pid}" """
|
||||
return self.CLAIM_SET
|
||||
|
||||
def claim_sql_order(self) -> str:
|
||||
"""override this to implement a custom ORDER BY clause for the atomic claim step e.g. "created_at DESC" """
|
||||
return self.CLAIM_ORDER
|
||||
|
||||
def claim_from_top(self) -> int:
|
||||
"""override this to implement a custom number of objects to consider when atomically claiming the next object from the top of the queue"""
|
||||
return self.CLAIM_FROM_TOP
|
||||
|
||||
def tick(self, obj: Crawl) -> None:
|
||||
"""override this to process the object"""
|
||||
print(f'[blue]🏃♂️ {self}.tick()[/blue]', obj.abid or obj.id)
|
||||
# For example:
|
||||
# do_some_task(obj)
|
||||
# do_something_else(obj)
|
||||
# obj._model.objects.filter(pk=obj.pk, status='started').update(status='success')
|
||||
# raise NotImplementedError('tick() must be implemented by the Actor subclass')
|
||||
|
||||
def on_shutdown(self, err: BaseException | None=None) -> None:
|
||||
print(f'[grey53]🏃♂️ {self}.on_shutdown() SHUTTING DOWN[/grey53]', err or '[green](gracefully)[/green]')
|
||||
# abx.pm.hook.on_actor_shutdown(self)
|
||||
|
||||
def on_tick_start(self, obj: Crawl) -> None:
|
||||
# print(f'🏃♂️ {self}.on_tick_start()', obj.abid or obj.id)
|
||||
# abx.pm.hook.on_actor_tick_start(self, obj_to_process)
|
||||
# self.timer = TimedProgress(self.MAX_TICK_TIME, prefix=' ')
|
||||
pass
|
||||
|
||||
def on_tick_end(self, obj: Crawl) -> None:
|
||||
# print(f'🏃♂️ {self}.on_tick_end()', obj.abid or obj.id)
|
||||
# abx.pm.hook.on_actor_tick_end(self, obj_to_process)
|
||||
# self.timer.end()
|
||||
pass
|
||||
|
||||
def on_tick_exception(self, obj: Crawl, err: BaseException) -> None:
|
||||
print(f'[red]🏃♂️ {self}.on_tick_exception()[/red]', obj.abid or obj.id, err)
|
||||
# abx.pm.hook.on_actor_tick_exception(self, obj_to_process, err)
|
|
@ -1,13 +1,20 @@
|
|||
__package__ = 'archivebox.crawls'
|
||||
|
||||
from typing import TYPE_CHECKING
|
||||
from django_stubs_ext.db.models import TypedModelMeta
|
||||
|
||||
from datetime import timedelta
|
||||
|
||||
from django.db import models
|
||||
from django.db.models import Q
|
||||
from django.core.validators import MaxValueValidator, MinValueValidator
|
||||
from django.conf import settings
|
||||
from django.utils import timezone
|
||||
from django.urls import reverse_lazy
|
||||
from django.utils import timezone
|
||||
|
||||
from statemachine.mixins import MachineMixin
|
||||
|
||||
if TYPE_CHECKING:
|
||||
from core.models import Snapshot
|
||||
|
||||
from seeds.models import Seed
|
||||
|
||||
|
@ -42,7 +49,8 @@ class CrawlSchedule(ABIDModel, ModelWithHealthStats):
|
|||
return self.crawl_set.first()
|
||||
|
||||
|
||||
class Crawl(ABIDModel, ModelWithHealthStats):
|
||||
|
||||
class Crawl(ABIDModel, ModelWithHealthStats, MachineMixin):
|
||||
"""
|
||||
A single session of URLs to archive starting from a given Seed and expanding outwards. An "archiving session" so to speak.
|
||||
|
||||
|
@ -55,10 +63,22 @@ class Crawl(ABIDModel, ModelWithHealthStats):
|
|||
abid_prefix = 'crl_'
|
||||
abid_ts_src = 'self.created_at'
|
||||
abid_uri_src = 'self.seed.uri'
|
||||
abid_subtype_src = 'self.persona_id'
|
||||
abid_subtype_src = 'self.persona'
|
||||
abid_rand_src = 'self.id'
|
||||
abid_drift_allowed = True
|
||||
|
||||
state_field_name = 'status'
|
||||
state_machine_name = 'crawls.statemachines.CrawlMachine'
|
||||
state_machine_attr = 'sm'
|
||||
bind_events_as_methods = True
|
||||
|
||||
class CrawlStatus(models.TextChoices):
|
||||
QUEUED = 'queued', 'Queued'
|
||||
STARTED = 'started', 'Started'
|
||||
SEALED = 'sealed', 'Sealed'
|
||||
|
||||
status = models.CharField(choices=CrawlStatus.choices, max_length=15, default=CrawlStatus.QUEUED, null=False, blank=False)
|
||||
|
||||
id = models.UUIDField(primary_key=True, default=None, null=False, editable=False, unique=True, verbose_name='ID')
|
||||
abid = ABIDField(prefix=abid_prefix)
|
||||
|
||||
|
@ -66,6 +86,7 @@ class Crawl(ABIDModel, ModelWithHealthStats):
|
|||
created_at = AutoDateTimeField(default=None, null=False, db_index=True)
|
||||
modified_at = models.DateTimeField(auto_now=True)
|
||||
|
||||
|
||||
seed = models.ForeignKey(Seed, on_delete=models.PROTECT, related_name='crawl_set', null=False, blank=False)
|
||||
max_depth = models.PositiveSmallIntegerField(default=0, validators=[MinValueValidator(0), MaxValueValidator(4)])
|
||||
tags_str = models.CharField(max_length=1024, blank=True, null=False, default='')
|
||||
|
@ -79,7 +100,7 @@ class Crawl(ABIDModel, ModelWithHealthStats):
|
|||
# schedule = models.JSONField()
|
||||
# config = models.JSONField()
|
||||
|
||||
# snapshot_set: models.Manager['Snapshot']
|
||||
snapshot_set: models.Manager['Snapshot']
|
||||
|
||||
|
||||
class Meta(TypedModelMeta):
|
||||
|
@ -103,6 +124,28 @@ class Crawl(ABIDModel, ModelWithHealthStats):
|
|||
def api_docs_url(self) -> str:
|
||||
return '/api/v1/docs#/Core%20Models/api_v1_core_get_crawl'
|
||||
|
||||
def has_pending_archiveresults(self) -> bool:
|
||||
from core.models import ArchiveResult
|
||||
|
||||
pending_statuses = [ArchiveResult.ArchiveResultStatus.QUEUED, ArchiveResult.ArchiveResultStatus.STARTED]
|
||||
|
||||
snapshot_ids = self.snapshot_set.values_list('id', flat=True)
|
||||
pending_archiveresults = ArchiveResult.objects.filter(snapshot_id__in=snapshot_ids, status__in=pending_statuses)
|
||||
return pending_archiveresults.exists()
|
||||
|
||||
def create_root_snapshot(self) -> 'Snapshot':
|
||||
from core.models import Snapshot
|
||||
|
||||
root_snapshot, _ = Snapshot.objects.get_or_create(
|
||||
crawl=self,
|
||||
url=self.seed.uri,
|
||||
)
|
||||
return root_snapshot
|
||||
|
||||
def bump_retry_at(self, seconds: int = 10):
|
||||
self.retry_at = timezone.now() + timedelta(seconds=seconds)
|
||||
self.save()
|
||||
|
||||
|
||||
class Outlink(models.Model):
|
||||
"""A record of a link found on a page, pointing to another page."""
|
||||
|
|
48
archivebox/crawls/statemachines.py
Normal file
48
archivebox/crawls/statemachines.py
Normal file
|
@ -0,0 +1,48 @@
|
|||
__package__ = 'archivebox.crawls'
|
||||
|
||||
from statemachine import State, StateMachine
|
||||
|
||||
from crawls.models import Crawl
|
||||
|
||||
# State Machine Definitions
|
||||
#################################################
|
||||
|
||||
|
||||
class CrawlMachine(StateMachine, strict_states=True):
|
||||
"""State machine for managing Crawl lifecycle."""
|
||||
|
||||
model: Crawl
|
||||
|
||||
# States
|
||||
queued = State(value=Crawl.CrawlStatus.QUEUED, initial=True)
|
||||
started = State(value=Crawl.CrawlStatus.STARTED)
|
||||
sealed = State(value=Crawl.CrawlStatus.SEALED, final=True)
|
||||
|
||||
# Tick Event
|
||||
tick = (
|
||||
queued.to.itself(unless='can_start', internal=True) |
|
||||
queued.to(started, cond='can_start') |
|
||||
started.to.itself(unless='is_finished', internal=True) |
|
||||
started.to(sealed, cond='is_finished')
|
||||
)
|
||||
|
||||
def __init__(self, crawl, *args, **kwargs):
|
||||
self.crawl = crawl
|
||||
super().__init__(crawl, *args, **kwargs)
|
||||
|
||||
def can_start(self) -> bool:
|
||||
return self.crawl.seed and self.crawl.seed.uri
|
||||
|
||||
def is_finished(self) -> bool:
|
||||
return not self.crawl.has_pending_archiveresults()
|
||||
|
||||
|
||||
|
||||
def on_started(self):
|
||||
self.crawl.create_root_snapshot()
|
||||
self.crawl.bump_retry_at(seconds=10)
|
||||
self.crawl.save()
|
||||
|
||||
def on_sealed(self):
|
||||
self.crawl.retry_at = None
|
||||
self.crawl.save()
|
|
@ -29,7 +29,7 @@ def get_EXTRACTORS():
|
|||
'singlefile': SINGLEFILE_EXTRACTOR,
|
||||
}
|
||||
|
||||
# @abx.hookimpl
|
||||
# def get_INSTALLED_APPS():
|
||||
# # needed to load ./models.py
|
||||
# return [__package__]
|
||||
@abx.hookimpl
|
||||
def get_INSTALLED_APPS():
|
||||
# needed to load ./models.py
|
||||
return [__package__]
|
||||
|
|
|
@ -0,0 +1,27 @@
|
|||
__package__ = 'abx_plugin_singlefile'
|
||||
|
||||
from typing import ClassVar
|
||||
from django.db.models import QuerySet
|
||||
from django.utils.functional import classproperty
|
||||
|
||||
from actors.actor import ActorType
|
||||
|
||||
from .models import SinglefileResult
|
||||
|
||||
|
||||
class SinglefileActor(ActorType[SinglefileResult]):
|
||||
CLAIM_ORDER: ClassVar[str] = 'created_at DESC'
|
||||
CLAIM_WHERE: ClassVar[str] = 'status = "queued" AND extractor = "favicon"'
|
||||
CLAIM_SET: ClassVar[str] = 'status = "started"'
|
||||
|
||||
@classproperty
|
||||
def QUERYSET(cls) -> QuerySet:
|
||||
return SinglefileResult.objects.filter(status='queued')
|
||||
|
||||
def tick(self, obj: SinglefileResult):
|
||||
print(f'[grey53]{self}.tick({obj.abid or obj.id}, status={obj.status}) remaining:[/grey53]', self.get_queue().count())
|
||||
updated = SinglefileResult.objects.filter(id=obj.id, status='started').update(status='success') == 1
|
||||
if not updated:
|
||||
raise Exception(f'Failed to update {obj.abid or obj.id}, interrupted by another actor writing to the same object')
|
||||
obj.refresh_from_db()
|
||||
obj.save()
|
|
@ -20,6 +20,17 @@ from django.urls import reverse_lazy
|
|||
|
||||
from pathlib import Path
|
||||
|
||||
# Glossary:
|
||||
# - startup: when a new process is spawned
|
||||
# - shutdown: when a process is exiting
|
||||
# - start: at the beginning of some python code block
|
||||
# - end: at the end of some python code block
|
||||
# - queue: a django queryset of objects of a single type that are waiting to be processed
|
||||
# - actor: a long-running daemon process that wakes up and processes a single object from a queue at a time
|
||||
# - plugin: a python package that defines some hookimpls based on hookspecs exposed by ABX
|
||||
# - object: an instance of a django model that represents a single row in the database
|
||||
|
||||
|
||||
# ORCHESTRATOR:
|
||||
# An orchestrator is a single long-running daemon process that manages spawning and killing actors for different queues of objects.
|
||||
# The orchestrator first starts when the archivebox starts, and it stops when archivebox is killed.
|
||||
|
@ -74,8 +85,8 @@ from pathlib import Path
|
|||
# On startup an actor should fire abx.pm.hook.on_actor_startup(object) and on exit it should fire abx.pm.hook.on_actor_exit(object) (both syncronous hooks that can be used by plugins to register any startup/cleanup code).
|
||||
# An ActorType defines the following hookspecs for plugins to hook into its behavior:
|
||||
# - abx.pm.hook.on_actor_startup(actor, queue)
|
||||
# - abx.pm.hook.on_actor_tick_started(actor, object)
|
||||
# - abx.pm.hook.on_actor_tick_finished(actor, object)
|
||||
# - abx.pm.hook.on_actor_tick_start(actor, object)
|
||||
# - abx.pm.hook.on_actor_tick_end(actor, object)
|
||||
# - abx.pm.hook.on_actor_tick_exception(actor, object, exception)
|
||||
# - abx.pm.hook.on_actor_shutdown(actor)
|
||||
|
||||
|
@ -107,8 +118,8 @@ from pathlib import Path
|
|||
# - external API calls (e.g. uploading to s3, firing a webhook, writing to a logfile, etc.)
|
||||
# - DO NOT use side effects to directly mutate other objects state or trigger other state transitions
|
||||
# ABX defines the following hookspecs for plugins to hook into transition behavior:
|
||||
# - abx.pm.hook.on_transition_<objecttype>_from_abx_to_xyz_started(object)
|
||||
# - abx.pm.hook.on_transition_<objecttype>_from_abx_to_xyz_succeeded(object)
|
||||
# - abx.pm.hook.on_transition_<objecttype>_from_abx_to_xyz_start(object)
|
||||
# - abx.pm.hook.on_transition_<objecttype>_from_abx_to_xyz_end(object)
|
||||
|
||||
# READ:
|
||||
# A read() method is a function defined for a given ActorType that performs a single read from the DB and/or other read models like django cache, filesystem, in-memory caches, etc.
|
||||
|
|
|
@ -1,19 +1,8 @@
|
|||
__package__ = 'archivebox.seeds'
|
||||
|
||||
|
||||
from datetime import datetime
|
||||
|
||||
from django_stubs_ext.db.models import TypedModelMeta
|
||||
|
||||
from django.db import models
|
||||
from django.db.models import Q
|
||||
from django.core.validators import MaxValueValidator, MinValueValidator
|
||||
from django.conf import settings
|
||||
from django.utils import timezone
|
||||
from django.utils.functional import cached_property
|
||||
from django.urls import reverse_lazy
|
||||
|
||||
from pathlib import Path
|
||||
|
||||
|
||||
from abid_utils.models import ABIDModel, ABIDField, AutoDateTimeField, ModelWithHealthStats
|
||||
|
@ -47,7 +36,10 @@ class Seed(ABIDModel, ModelWithHealthStats):
|
|||
abid_rand_src = 'self.id'
|
||||
abid_drift_allowed = True
|
||||
|
||||
uri = models.URLField(max_length=255, blank=False, null=False, unique=True) # unique source location where URLs will be loaded from
|
||||
id = models.UUIDField(primary_key=True, default=None, null=False, editable=False, unique=True, verbose_name='ID')
|
||||
abid = ABIDField(prefix=abid_prefix)
|
||||
|
||||
uri = models.URLField(max_length=2000, blank=False, null=False) # unique source location where URLs will be loaded from
|
||||
|
||||
extractor = models.CharField(default='auto', max_length=32) # suggested extractor to use to load this URL source
|
||||
tags_str = models.CharField(max_length=255, null=False, blank=True, default='') # tags to attach to any URLs that come from this source
|
||||
|
@ -64,4 +56,10 @@ class Seed(ABIDModel, ModelWithHealthStats):
|
|||
# pocketapi://
|
||||
# s3://
|
||||
# etc..
|
||||
return self.uri.split('://')[0].lower()
|
||||
return self.uri.split('://', 1)[0].lower()
|
||||
|
||||
class Meta:
|
||||
verbose_name = 'Seed'
|
||||
verbose_name_plural = 'Seeds'
|
||||
|
||||
unique_together = (('created_by', 'uri', 'extractor'),)
|
||||
|
|
|
@ -86,40 +86,35 @@ dependencies = [
|
|||
"yt-dlp>=2024.8.6", # for: media"
|
||||
############# Plugin Dependencies ################
|
||||
"abx>=0.1.0",
|
||||
|
||||
"abx-spec-pydantic-pkgr>=0.1.0",
|
||||
"abx-spec-config>=0.1.0",
|
||||
"abx-spec-archivebox>=0.1.0",
|
||||
"abx-spec-django>=0.1.0",
|
||||
"abx-spec-extractor>=0.1.0",
|
||||
"abx-spec-searchbackend>=0.1.0",
|
||||
|
||||
"abx-plugin-default-binproviders>=2024.10.24",
|
||||
"abx-plugin-pip>=2024.10.24",
|
||||
"abx-plugin-npm>=2024.10.24",
|
||||
"abx-plugin-playwright>=2024.10.24",
|
||||
"abx-plugin-puppeteer>=2024.10.28",
|
||||
|
||||
"abx-plugin-ripgrep-search>=2024.10.28",
|
||||
"abx-plugin-sqlitefts-search>=2024.10.28",
|
||||
"abx-plugin-sonic-search>=2024.10.28",
|
||||
"abx-plugin-ldap-auth>=2024.10.28",
|
||||
|
||||
"abx-plugin-curl>=2024.10.27",
|
||||
"abx-plugin-wget>=2024.10.28",
|
||||
"abx-plugin-git>=2024.10.28",
|
||||
"abx-plugin-chrome>=2024.10.28",
|
||||
"abx-plugin-ytdlp>=2024.10.28",
|
||||
|
||||
"abx-plugin-title>=2024.10.27",
|
||||
"abx-plugin-favicon>=2024.10.27",
|
||||
# "abx-plugin-headers>=2024.10.27",
|
||||
"abx-plugin-archivedotorg>=2024.10.28",
|
||||
|
||||
"abx-plugin-singlefile>=2024.10.28",
|
||||
"abx-plugin-readability>=2024.10.28",
|
||||
"abx-plugin-mercury>=2024.10.28",
|
||||
"abx-plugin-htmltotext>=2024.10.28",
|
||||
"python-statemachine>=2.3.6",
|
||||
]
|
||||
|
||||
[project.optional-dependencies]
|
||||
|
|
11
uv.lock
11
uv.lock
|
@ -661,6 +661,7 @@ dependencies = [
|
|||
{ name = "pydantic-settings" },
|
||||
{ name = "python-benedict", extra = ["io", "parse"] },
|
||||
{ name = "python-crontab" },
|
||||
{ name = "python-statemachine" },
|
||||
{ name = "requests" },
|
||||
{ name = "rich" },
|
||||
{ name = "rich-argparse" },
|
||||
|
@ -789,6 +790,7 @@ requires-dist = [
|
|||
{ name = "python-benedict", extras = ["io", "parse"], specifier = ">=0.33.2" },
|
||||
{ name = "python-crontab", specifier = ">=3.2.0" },
|
||||
{ name = "python-ldap", marker = "extra == 'ldap'", specifier = ">=3.4.3" },
|
||||
{ name = "python-statemachine", specifier = ">=2.3.6" },
|
||||
{ name = "requests", specifier = ">=2.32.3" },
|
||||
{ name = "requests-tracker", marker = "extra == 'debug'", specifier = ">=0.3.3" },
|
||||
{ name = "rich", specifier = ">=13.8.0" },
|
||||
|
@ -2729,6 +2731,15 @@ wheels = [
|
|||
{ url = "https://files.pythonhosted.org/packages/a4/62/02da182e544a51a5c3ccf4b03ab79df279f9c60c5e82d5e8bec7ca26ac11/python_slugify-8.0.4-py2.py3-none-any.whl", hash = "sha256:276540b79961052b66b7d116620b36518847f52d5fd9e3a70164fc8c50faa6b8", size = 10051 },
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "python-statemachine"
|
||||
version = "2.3.6"
|
||||
source = { registry = "https://pypi.org/simple" }
|
||||
sdist = { url = "https://files.pythonhosted.org/packages/20/c9/7034a362ce151f9fa0ead5630727a16122f7a5ed235d42447910dff95b6a/python_statemachine-2.3.6.tar.gz", hash = "sha256:9cb4040ca7f2158d3cd46f36a77b420b6ef95a90223928a7f3cab232a70bd560", size = 36735 }
|
||||
wheels = [
|
||||
{ url = "https://files.pythonhosted.org/packages/39/04/19a44b549cbaae1ac6c2acc58afb96b71209da866713877f40aab2f45de6/python_statemachine-2.3.6-py3-none-any.whl", hash = "sha256:0001b02cbe2f5b2420c423b5b3e3a33915447ac6d9735219c929e2378d454f5f", size = 41529 },
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "python-stdnum"
|
||||
version = "1.20"
|
||||
|
|
Loading…
Reference in a new issue