kopia lustrzana https://github.com/OpenDroneMap/WebODM
Removed scheduler code, background decorator, added Celery workers, migrated code, added SharedTestWatch
Piero Toffanin
rodzic
d9f4f1527c
commit
22c3e66c02
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@ -75,6 +75,7 @@ target/
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# celery beat schedule file
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celerybeat-schedule
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celerybeat.pid
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# dotenv
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.env
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@ -17,8 +17,9 @@ from rest_framework.views import APIView
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from nodeodm import status_codes
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from .common import get_and_check_project, get_tile_json, path_traversal_check
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from app import models, scheduler, pending_actions
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from app import models, pending_actions
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from nodeodm.models import ProcessingNode
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from worker import tasks as worker_tasks
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class TaskIDsSerializer(serializers.BaseSerializer):
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@ -84,8 +85,8 @@ class TaskViewSet(viewsets.ViewSet):
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task.last_error = None
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task.save()
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# Call the scheduler (speed things up)
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scheduler.process_pending_tasks(background=True)
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# Process pending tasks without waiting for the scheduler (speed things up)
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worker_tasks.process_pending_tasks.delay()
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return Response({'success': True})
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@ -180,8 +181,8 @@ class TaskViewSet(viewsets.ViewSet):
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serializer.is_valid(raise_exception=True)
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serializer.save()
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# Call the scheduler (speed things up)
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scheduler.process_pending_tasks(background=True)
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# Process pending tasks without waiting for the scheduler (speed things up)
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worker_tasks.process_pending_tasks.delay()
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return Response(serializer.data)
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@ -1,40 +0,0 @@
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from threading import Thread
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import logging
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from django import db
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from app.testwatch import testWatch
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logger = logging.getLogger('app.logger')
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def background(func):
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"""
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Adds background={True|False} param to any function
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so that we can call update_nodes_info(background=True) from the outside
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"""
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def wrapper(*args,**kwargs):
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background = kwargs.get('background', False)
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if 'background' in kwargs: del kwargs['background']
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if background:
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if testWatch.hook_pre(func, *args, **kwargs): return
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# Create a function that closes all
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# db connections at the end of the thread
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# This is necessary to make sure we don't leave
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# open connections lying around.
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def execute_and_close_db():
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ret = None
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try:
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ret = func(*args, **kwargs)
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finally:
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db.connections.close_all()
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testWatch.hook_post(func, *args, **kwargs)
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return ret
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t = Thread(target=execute_and_close_db)
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t.daemon = True
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t.start()
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return t
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else:
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return func(*args, **kwargs)
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return wrapper
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10
app/boot.py
10
app/boot.py
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@ -7,13 +7,14 @@ from django.core.files import File
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from django.db.utils import ProgrammingError
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from guardian.shortcuts import assign_perm
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from worker import tasks as worker_tasks
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from app.models import Preset
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from app.models import Theme
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from app.plugins import register_plugins
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from nodeodm.models import ProcessingNode
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# noinspection PyUnresolvedReferences
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from webodm.settings import MEDIA_ROOT
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from . import scheduler, signals
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from . import signals
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import logging
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from .models import Task, Setting
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from webodm import settings
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@ -22,7 +23,7 @@ from webodm.wsgi import booted
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def boot():
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# booted is a shared memory variable to keep track of boot status
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# as multiple workers could trigger the boot sequence twice
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# as multiple gunicorn workers could trigger the boot sequence twice
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if not settings.DEBUG and booted.value: return
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booted.value = True
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@ -92,10 +93,7 @@ def boot():
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register_plugins()
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if not settings.TESTING:
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# Setup and start scheduler
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scheduler.setup()
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scheduler.update_nodes_info(background=True)
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worker_tasks.update_nodes_info.delay()
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except ProgrammingError:
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logger.warning("Could not touch the database. If running a migration, this is expected.")
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@ -32,7 +32,7 @@ class Project(models.Model):
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super().delete(*args)
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else:
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# Need to remove all tasks before we can remove this project
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# which will be deleted on the scheduler after pending actions
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# which will be deleted by workers after pending actions
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# have been completed
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self.task_set.update(pending_action=pending_actions.REMOVE)
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self.deleting = True
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@ -109,7 +109,7 @@ class Task(models.Model):
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# mission
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created_at = models.DateTimeField(default=timezone.now, help_text="Creation date")
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pending_action = models.IntegerField(choices=PENDING_ACTIONS, db_index=True, null=True, blank=True, help_text="A requested action to be performed on the task. The selected action will be performed by the scheduler at the next iteration.")
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pending_action = models.IntegerField(choices=PENDING_ACTIONS, db_index=True, null=True, blank=True, help_text="A requested action to be performed on the task. The selected action will be performed by the worker at the next iteration.")
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public = models.BooleanField(default=False, help_text="A flag indicating whether this task is available to the public")
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@ -221,7 +221,7 @@ class Task(models.Model):
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def process(self):
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"""
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This method contains the logic for processing tasks asynchronously
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from a background thread or from the scheduler. Here tasks that are
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from a background thread or from a worker. Here tasks that are
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ready to be processed execute some logic. This could be communication
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with a processing node or executing a pending action.
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"""
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@ -1,96 +0,0 @@
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import logging
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import traceback
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from multiprocessing.dummy import Pool as ThreadPool
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from threading import Lock
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from apscheduler.schedulers import SchedulerAlreadyRunningError, SchedulerNotRunningError
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from apscheduler.schedulers.background import BackgroundScheduler
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from django import db
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from django.db.models import Q, Count
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from webodm import settings
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from app.models import Task, Project
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from nodeodm import status_codes
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from nodeodm.models import ProcessingNode
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from app.background import background
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logger = logging.getLogger('app.logger')
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scheduler = BackgroundScheduler({
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'apscheduler.job_defaults.coalesce': 'true',
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'apscheduler.job_defaults.max_instances': '3',
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})
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@background
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def update_nodes_info():
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processing_nodes = ProcessingNode.objects.all()
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for processing_node in processing_nodes:
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processing_node.update_node_info()
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tasks_mutex = Lock()
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@background
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def process_pending_tasks():
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tasks = []
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try:
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tasks_mutex.acquire()
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# All tasks that have a processing node assigned
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# Or that need one assigned (via auto)
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# or tasks that need a status update
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# or tasks that have a pending action
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# and that are not locked (being processed by another thread)
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tasks = Task.objects.filter(Q(processing_node__isnull=True, auto_processing_node=True) |
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Q(Q(status=None) | Q(status__in=[status_codes.QUEUED, status_codes.RUNNING]), processing_node__isnull=False) |
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Q(pending_action__isnull=False)).exclude(Q(processing_lock=True))
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for task in tasks:
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task.processing_lock = True
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task.save()
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finally:
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tasks_mutex.release()
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def process(task):
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try:
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task.process()
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except Exception as e:
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logger.error("Uncaught error! This is potentially bad. Please report it to http://github.com/OpenDroneMap/WebODM/issues: {} {}".format(e, traceback.format_exc()))
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if settings.TESTING: raise e
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finally:
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# Might have been deleted
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if task.pk is not None:
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task.processing_lock = False
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task.save()
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db.connections.close_all()
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if tasks.count() > 0:
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pool = ThreadPool(tasks.count())
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pool.map(process, tasks, chunksize=1)
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pool.close()
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pool.join()
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def cleanup_projects():
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# Delete all projects that are marked for deletion
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# and that have no tasks left
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total, count_dict = Project.objects.filter(deleting=True).annotate(
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tasks_count=Count('task')
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).filter(tasks_count=0).delete()
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if total > 0 and 'app.Project' in count_dict:
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logger.info("Deleted {} projects".format(count_dict['app.Project']))
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def setup():
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try:
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scheduler.start()
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scheduler.add_job(update_nodes_info, 'interval', seconds=30)
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scheduler.add_job(process_pending_tasks, 'interval', seconds=5)
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scheduler.add_job(cleanup_projects, 'interval', seconds=60)
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except SchedulerAlreadyRunningError:
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logger.warning("Scheduler already running (this is OK while testing)")
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def teardown():
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logger.info("Stopping scheduler...")
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try:
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scheduler.shutdown()
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logger.info("Scheduler stopped")
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except SchedulerNotRunningError:
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logger.warning("Scheduler not running")
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@ -16,7 +16,6 @@ from rest_framework import status
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from rest_framework.test import APIClient
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from app import pending_actions
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from app import scheduler
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from django.utils import timezone
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from app.models import Project, Task, ImageUpload
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from app.models.task import task_directory_path, full_task_directory_path
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@ -201,15 +201,7 @@ class TestApp(BootTestCase):
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self.assertRaises(ValidationError, task.save)
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def test_scheduler(self):
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self.assertTrue(scheduler.setup() is None)
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# Can call update_nodes_info()
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self.assertTrue(scheduler.update_nodes_info() is None)
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# Can call function in background
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self.assertTrue(scheduler.update_nodes_info(background=True).join() is None)
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self.assertTrue(scheduler.teardown() is None)
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def test_worker(self):
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self.assertTrue(True) # TODO!!!
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@ -1,6 +1,7 @@
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from django.test import TestCase
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from webodm.settings import CELERY_BROKER_URL
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from app.testwatch import TestWatch
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from app.testwatch import TestWatch, SharedTestWatch
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def test(a, b):
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@ -8,8 +9,8 @@ def test(a, b):
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class TestTestWatch(TestCase):
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def test_methods(self):
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tw = TestWatch()
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def test_watch_instance(tw):
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self.assertTrue(tw.get_calls_count("app.tests.test_testwatch.test") == 0)
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self.assertTrue(tw.get_calls_count("app.tests.test_testwatch.nonexistent") == 0)
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@ -53,5 +54,6 @@ class TestTestWatch(TestCase):
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self.assertFalse(d['a'])
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self.assertTrue(d['b'])
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test_watch_instance(TestWatch())
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test_watch_instance(SharedTestWatch(CELERY_BROKER_URL))
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@ -1,7 +1,12 @@
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import time
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import time, redis
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import logging
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import marshal
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import types
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import json
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from webodm import settings
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logger = logging.getLogger('app.logger')
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@ -10,26 +15,32 @@ class TestWatch:
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def __init__(self):
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self.clear()
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def func_to_name(f):
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return "{}.{}".format(f.__module__, f.__name__)
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def clear(self):
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self._calls = {}
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self._intercept_list = {}
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def func_to_name(f):
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return "{}.{}".format(f.__module__, f.__name__)
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def intercept(self, fname, f = None):
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self._intercept_list[fname] = f if f is not None else True
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def execute_intercept_function_replacement(self, fname, *args, **kwargs):
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if fname in self._intercept_list and callable(self._intercept_list[fname]):
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(self._intercept_list[fname])(*args, **kwargs)
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def intercept_list_has(self, fname):
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return fname in self._intercept_list
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def should_prevent_execution(self, func):
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return TestWatch.func_to_name(func) in self._intercept_list
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def execute_intercept_function_replacement(self, fname, *args, **kwargs):
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if self.intercept_list_has(fname) and callable(self._intercept_list[fname]):
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(self._intercept_list[fname])(*args, **kwargs)
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def get_calls(self, fname):
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return self._calls[fname] if fname in self._calls else []
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def set_calls(self, fname, value):
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self._calls[fname] = value
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def should_prevent_execution(self, func):
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return self.intercept_list_has(TestWatch.func_to_name(func))
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def get_calls_count(self, fname):
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return len(self.get_calls(fname))
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@ -49,9 +60,9 @@ class TestWatch:
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def log_call(self, func, *args, **kwargs):
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fname = TestWatch.func_to_name(func)
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logger.info("{} called".format(fname))
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list = self._calls[fname] if fname in self._calls else []
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list = self.get_calls(fname)
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list.append({'f': fname, 'args': args, 'kwargs': kwargs})
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self._calls[fname] = list
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self.set_calls(fname, list)
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def hook_pre(self, func, *args, **kwargs):
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if settings.TESTING and self.should_prevent_execution(func):
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@ -80,4 +91,42 @@ class TestWatch:
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return wrapper
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return outer
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"""
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Redis-backed test watch
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suitable for cross-machine/cross-process
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test watching
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"""
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class SharedTestWatch(TestWatch):
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"""
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:param redis_url same as celery broker URL, for ex. redis://localhost:1234
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"""
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def __init__(self, redis_url):
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self.r = redis.from_url(redis_url)
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super().__init__()
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def clear(self):
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self.r.delete('testwatch:calls', 'testwatch:intercept_list')
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def intercept(self, fname, f = None):
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self.r.hmset('testwatch:intercept_list', {fname: marshal.dumps(f.__code__) if f is not None else 1})
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def intercept_list_has(self, fname):
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return self.r.hget('testwatch:intercept_list', fname) is not None
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def execute_intercept_function_replacement(self, fname, *args, **kwargs):
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if self.intercept_list_has(fname) and self.r.hget('testwatch:intercept_list', fname) != b'1':
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# Rebuild function
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fcode = self.r.hget('testwatch:intercept_list', fname)
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f = types.FunctionType(marshal.loads(fcode), globals())
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f(*args, **kwargs)
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def get_calls(self, fname):
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value = self.r.hget('testwatch:calls', fname)
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if value is None: return []
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else:
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return json.loads(value.decode('utf-8'))
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def set_calls(self, fname, value):
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self.r.hmset('testwatch:calls', {fname: json.dumps(value)})
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testWatch = TestWatch()
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@ -1,3 +1,4 @@
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import sys
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from django.conf.urls import url, include
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from .views import app as app_views, public as public_views
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@ -30,5 +31,7 @@ urlpatterns = [
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urlpatterns += get_url_patterns()
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# Test cases call boot() independently
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if not settings.TESTING:
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# Also don't execute boot with celery workers
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celery_running = sys.argv[2:3] == ["worker"]
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if not celery_running and not settings.TESTING:
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boot()
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@ -37,6 +37,8 @@ services:
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image: opendronemap/webodm_worker
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container_name: worker
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entrypoint: /bin/bash -c \"/webodm/wait-for-it.sh broker:6379 -- /broker/start.sh\""
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volumes:
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- ${WO_MEDIA_DIR}:/worker/app/media
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depends_on:
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- broker
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environment:
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|
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@ -313,6 +313,16 @@ LIBSASS_CUSTOM_FUNCTIONS = {
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'scalebyiv': scalebyiv
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}
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# Celery
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CELERY_BROKER_URL = os.environ.get('WO_BROKER', 'redis://localhost')
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CELERY_RESULT_BACKEND = os.environ.get('WO_BROKER', 'redis://localhost')
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CELERY_TASK_SERIALIZER = 'json'
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CELERY_RESULT_SERIALIZER = 'json'
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CELERY_ACCEPT_CONTENT = ['json']
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CELERY_INCLUDE=['worker.tasks']
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if TESTING:
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MEDIA_ROOT = os.path.join(BASE_DIR, 'app', 'media_test')
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|
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|
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@ -3,6 +3,16 @@ set -eo pipefail
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__dirname=$(cd $(dirname "$0"); pwd -P)
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cd ${__dirname}
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usage(){
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echo "Usage: $0 <command>"
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echo
|
||||
echo "This program manages the background worker processes. WebODM requires at least one background process worker to be running at all times."
|
||||
echo
|
||||
echo "Command list:"
|
||||
echo " start Start background worker"
|
||||
exit
|
||||
}
|
||||
|
||||
check_command(){
|
||||
check_msg_prefix="Checking for $1... "
|
||||
check_msg_result="\033[92m\033[1m OK\033[0m\033[39m"
|
||||
|
|
@ -36,11 +46,17 @@ environment_check(){
|
|||
fi
|
||||
}
|
||||
|
||||
environment_check
|
||||
|
||||
start(){
|
||||
action=$1
|
||||
|
||||
echo "Starting worker using broker at $WO_BROKER"
|
||||
|
||||
# Switch to parent directory
|
||||
# so that celery recognizes the package name
|
||||
cd ${__dirname}/../
|
||||
|
||||
celery -A worker worker --loglevel=info
|
||||
}
|
||||
|
||||
if [[ $1 = "start" ]]; then
|
||||
environment_check
|
||||
start
|
||||
else
|
||||
usage
|
||||
fi
|
||||
|
|
@ -1,21 +0,0 @@
|
|||
FROM ubuntu:16.04
|
||||
MAINTAINER Piero Toffanin <pt@masseranolabs.com>
|
||||
|
||||
WO_BROKER=redis://broker
|
||||
|
||||
RUN apt-get update && \
|
||||
apt-get install -y software-properties-common && \
|
||||
add-apt-repository -y ppa:ubuntugis/ubuntugis-unstable && \
|
||||
apt-get install update && \
|
||||
apt-get install -y grass-core python-pip
|
||||
|
||||
COPY requirements.txt /worker/
|
||||
COPY ../wait-for-it.sh /worker/
|
||||
WORKDIR /worker
|
||||
|
||||
RUN pip install -U pip && pip install -r requirements.txt
|
||||
|
||||
RUN apt-get clean && \
|
||||
rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
|
||||
|
||||
RUN chmod 644 /docker-entrypoint-initdb.d/init-db.sql
|
||||
|
|
@ -1,8 +1,37 @@
|
|||
from celery import Celery
|
||||
import os
|
||||
|
||||
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'webodm.settings')
|
||||
|
||||
app = Celery('tasks')
|
||||
app.config_from_object('worker.celeryconfig');
|
||||
app.config_from_object('django.conf:settings', namespace='CELERY')
|
||||
|
||||
app.conf.beat_schedule = {
|
||||
'update-nodes-info': {
|
||||
'task': 'worker.tasks.update_nodes_info',
|
||||
'schedule': 30,
|
||||
'options': {
|
||||
'expires': 14,
|
||||
'retry': False
|
||||
}
|
||||
},
|
||||
'cleanup-projects': {
|
||||
'task': 'worker.tasks.cleanup_projects',
|
||||
'schedule': 60,
|
||||
'options': {
|
||||
'expires': 29,
|
||||
'retry': False
|
||||
}
|
||||
},
|
||||
'process-pending-tasks': {
|
||||
'task': 'worker.tasks.process_pending_tasks',
|
||||
'schedule': 5,
|
||||
'options': {
|
||||
'expires': 2,
|
||||
'retry': False
|
||||
}
|
||||
},
|
||||
}
|
||||
|
||||
if __name__ == '__main__':
|
||||
app.start()
|
||||
|
|
@ -1,9 +0,0 @@
|
|||
import os
|
||||
|
||||
broker_url = os.environ.get('WO_BROKER', 'redis://localhost')
|
||||
result_backend = os.environ.get('WO_BROKER', 'redis://localhost')
|
||||
|
||||
task_serializer = 'json'
|
||||
result_serializer = 'json'
|
||||
accept_content = ['json']
|
||||
include=['worker.tasks']
|
||||
|
|
@ -1,2 +0,0 @@
|
|||
celery
|
||||
redis
|
||||
|
|
@ -1,15 +1,83 @@
|
|||
import traceback
|
||||
|
||||
from django.core.exceptions import ObjectDoesNotExist
|
||||
from django.db.models import Count
|
||||
from django.db.models import Q
|
||||
|
||||
from app.models import Project
|
||||
from app.models import Task
|
||||
from webodm import settings
|
||||
from nodeodm import status_codes
|
||||
from nodeodm.models import ProcessingNode
|
||||
from .celery import app
|
||||
from celery.utils.log import get_task_logger
|
||||
from django.db import transaction
|
||||
|
||||
logger = get_task_logger(__name__)
|
||||
|
||||
@app.task
|
||||
def add(x, y):
|
||||
return x + y
|
||||
def update_nodes_info():
|
||||
processing_nodes = ProcessingNode.objects.all()
|
||||
for processing_node in processing_nodes:
|
||||
processing_node.update_node_info()
|
||||
|
||||
|
||||
@app.task
|
||||
def mul(x, y):
|
||||
return x * y
|
||||
def cleanup_projects():
|
||||
# Delete all projects that are marked for deletion
|
||||
# and that have no tasks left
|
||||
total, count_dict = Project.objects.filter(deleting=True).annotate(
|
||||
tasks_count=Count('task')
|
||||
).filter(tasks_count=0).delete()
|
||||
if total > 0 and 'app.Project' in count_dict:
|
||||
logger.info("Deleted {} projects".format(count_dict['app.Project']))
|
||||
|
||||
|
||||
@app.task
|
||||
def xsum(numbers):
|
||||
return sum(numbers)
|
||||
def process_task(taskId):
|
||||
# TODO: would a redis lock perform better here?
|
||||
with transaction.atomic():
|
||||
try:
|
||||
task = Task.objects.filter(pk=taskId).select_for_update().get()
|
||||
except ObjectDoesNotExist:
|
||||
logger.info("Task id {} has already been deleted.".format(taskId))
|
||||
return
|
||||
|
||||
if not task.processing_lock:
|
||||
task.processing_lock = True
|
||||
task.save()
|
||||
else:
|
||||
return # Another worker beat us to it
|
||||
|
||||
try:
|
||||
task.process()
|
||||
except Exception as e:
|
||||
logger.error(
|
||||
"Uncaught error! This is potentially bad. Please report it to http://github.com/OpenDroneMap/WebODM/issues: {} {}".format(
|
||||
e, traceback.format_exc()))
|
||||
if settings.TESTING: raise e
|
||||
finally:
|
||||
# Might have been deleted
|
||||
if task.pk is not None:
|
||||
task.processing_lock = False
|
||||
task.save()
|
||||
|
||||
|
||||
@app.task
|
||||
def process_pending_tasks():
|
||||
# All tasks that have a processing node assigned
|
||||
# Or that need one assigned (via auto)
|
||||
# or tasks that need a status update
|
||||
# or tasks that have a pending action
|
||||
# and that are not locked (being processed by another thread)
|
||||
qs = Task.objects.filter(Q(processing_node__isnull=True, auto_processing_node=True) |
|
||||
Q(Q(status=None) | Q(status__in=[status_codes.QUEUED, status_codes.RUNNING]),
|
||||
processing_node__isnull=False) |
|
||||
Q(pending_action__isnull=False)).exclude(Q(processing_lock=True))
|
||||
|
||||
tasks = list(qs)
|
||||
|
||||
if len(qs) > 0:
|
||||
for task in tasks:
|
||||
process_task.delay(task.id)
|
||||
|
||||
|
|
|
|||
Ładowanie…
Reference in New Issue