kopia lustrzana https://github.com/OpenDroneMap/WebODM
404 wiersze
18 KiB
Python
404 wiersze
18 KiB
Python
import logging
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import os
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import shutil
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import zipfile
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from django.contrib.auth.models import User
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from django.contrib.gis.gdal import GDALRaster
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from django.contrib.postgres import fields
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from django.core.exceptions import ValidationError
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from django.db import models
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from django.db import transaction
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from django.db.models import signals
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from django.dispatch import receiver
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from django.utils import timezone
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from guardian.models import GroupObjectPermissionBase
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from guardian.models import UserObjectPermissionBase
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from guardian.shortcuts import get_perms_for_model, assign_perm
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from app import pending_actions
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from app.postgis import OffDbRasterField
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from nodeodm import status_codes
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from nodeodm.exceptions import ProcessingException
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from nodeodm.models import ProcessingNode
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from webodm import settings
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logger = logging.getLogger('app.logger')
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def task_directory_path(taskId, projectId):
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return 'project/{0}/task/{1}/'.format(projectId, taskId)
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def assets_directory_path(taskId, projectId, filename):
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# files will be uploaded to MEDIA_ROOT/project/<id>/task/<id>/<filename>
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return '{0}{1}'.format(task_directory_path(taskId, projectId), filename)
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class Project(models.Model):
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owner = models.ForeignKey(User, on_delete=models.PROTECT, help_text="The person who created the project")
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name = models.CharField(max_length=255, help_text="A label used to describe the project")
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description = models.TextField(null=True, blank=True, help_text="More in-depth description of the project")
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created_at = models.DateTimeField(default=timezone.now, help_text="Creation date")
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deleting = models.BooleanField(db_index=True, default=False,
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help_text="Whether this project has been marked for deletion. Projects that have running tasks need to wait for tasks to be properly cleaned up before they can be deleted.")
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def delete(self, *args):
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# No tasks?
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if self.task_set.count() == 0:
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# Just delete normally
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logger.info("Deleted project {}".format(self.id))
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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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# 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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self.save()
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logger.info("Tasks pending, set project {} deleting flag".format(self.id))
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def __str__(self):
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return self.name
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def tasks(self):
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return self.task_set.only('id')
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def get_tile_json_data(self):
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return [task.get_tile_json_data() for task in self.task_set.filter(
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status=status_codes.COMPLETED
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).only('id', 'project_id')]
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class Meta:
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permissions = (
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('view_project', 'Can view project'),
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)
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@receiver(signals.post_save, sender=Project, dispatch_uid="project_post_save")
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def project_post_save(sender, instance, created, **kwargs):
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"""
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Automatically assigns all permissions to the owner. If the owner changes
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it's up to the user/developer to remove the previous owner's permissions.
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"""
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for perm in get_perms_for_model(sender).all():
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assign_perm(perm.codename, instance.owner, instance)
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class ProjectUserObjectPermission(UserObjectPermissionBase):
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content_object = models.ForeignKey(Project)
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class ProjectGroupObjectPermission(GroupObjectPermissionBase):
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content_object = models.ForeignKey(Project)
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def gcp_directory_path(task, filename):
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return assets_directory_path(task.id, task.project.id, filename)
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def validate_task_options(value):
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"""
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Make sure that the format of this options field is valid
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"""
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if len(value) == 0: return
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try:
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for option in value:
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if not option['name']: raise ValidationError("Name key not found in option")
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if not option['value']: raise ValidationError("Value key not found in option")
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except:
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raise ValidationError("Invalid options")
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class Task(models.Model):
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STATUS_CODES = (
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(status_codes.QUEUED, 'QUEUED'),
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(status_codes.RUNNING, 'RUNNING'),
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(status_codes.FAILED, 'FAILED'),
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(status_codes.COMPLETED, 'COMPLETED'),
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(status_codes.CANCELED, 'CANCELED')
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)
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PENDING_ACTIONS = (
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(pending_actions.CANCEL, 'CANCEL'),
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(pending_actions.REMOVE, 'REMOVE'),
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(pending_actions.RESTART, 'RESTART'),
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)
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uuid = models.CharField(max_length=255, db_index=True, default='', blank=True, help_text="Identifier of the task (as returned by OpenDroneMap's REST API)")
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project = models.ForeignKey(Project, on_delete=models.CASCADE, help_text="Project that this task belongs to")
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name = models.CharField(max_length=255, null=True, blank=True, help_text="A label for the task")
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processing_lock = models.BooleanField(default=False, help_text="A flag indicating whether this task is currently locked for processing. When this flag is turned on, the task is in the middle of a processing step.")
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processing_time = models.IntegerField(default=-1, help_text="Number of milliseconds that elapsed since the beginning of this task (-1 indicates that no information is available)")
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processing_node = models.ForeignKey(ProcessingNode, null=True, blank=True, help_text="Processing node assigned to this task (or null if this task has not been associated yet)")
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status = models.IntegerField(choices=STATUS_CODES, db_index=True, null=True, blank=True, help_text="Current status of the task")
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last_error = models.TextField(null=True, blank=True, help_text="The last processing error received")
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options = fields.JSONField(default=dict(), blank=True, help_text="Options that are being used to process this task", validators=[validate_task_options])
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console_output = models.TextField(null=False, default="", blank=True, help_text="Console output of the OpenDroneMap's process")
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ground_control_points = models.FileField(null=True, blank=True, upload_to=gcp_directory_path, help_text="Optional Ground Control Points file to use for processing")
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# georeferenced_model
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orthophoto = OffDbRasterField(null=True, blank=True, srid=4326, help_text="Orthophoto created by OpenDroneMap")
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# textured_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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def __str__(self):
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return 'Task ID: {}'.format(self.id)
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def save(self, *args, **kwargs):
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# Autovalidate on save
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self.full_clean()
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super(Task, self).save(*args, **kwargs)
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def assets_path(self, *args):
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"""
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Get a path relative to the place where assets are stored
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"""
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return os.path.join(settings.MEDIA_ROOT,
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assets_directory_path(self.id, self.project.id, ""),
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"assets",
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*args)
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@staticmethod
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def create_from_images(images, project):
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'''
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Create a new task from a set of input images (such as the ones coming from request.FILES).
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This will happen inside a transaction so if one of the images
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fails to load, the task will not be created.
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'''
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with transaction.atomic():
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task = Task.objects.create(project=project)
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for image in images:
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ImageUpload.objects.create(task=task, image=image)
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return task
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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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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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try:
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if self.processing_node:
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# Need to process some images (UUID not yet set and task not marked for deletion)?
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if not self.uuid and self.pending_action != pending_actions.REMOVE:
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logger.info("Processing... {}".format(self))
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images = [image.path() for image in self.imageupload_set.all()]
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try:
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# This takes a while
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uuid = self.processing_node.process_new_task(images, self.name, self.options)
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# Refresh task object before committing change
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self.refresh_from_db()
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self.uuid = uuid
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self.save()
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# TODO: log process has started processing
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except ProcessingException as e:
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self.set_failure(str(e))
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if self.pending_action is not None:
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try:
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if self.pending_action == pending_actions.CANCEL:
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# Do we need to cancel the task on the processing node?
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logger.info("Canceling task {}".format(self))
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if self.processing_node and self.uuid:
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self.processing_node.cancel_task(self.uuid)
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self.pending_action = None
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self.save()
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else:
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raise ProcessingException("Cannot cancel a task that has no processing node or UUID")
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elif self.pending_action == pending_actions.RESTART:
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logger.info("Restarting task {}".format(self))
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if self.processing_node and self.uuid:
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# Check if the UUID is still valid, as processing nodes purge
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# results after a set amount of time, the UUID might have eliminated.
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try:
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info = self.processing_node.get_task_info(self.uuid)
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uuid_still_exists = info['uuid'] == self.uuid
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except ProcessingException:
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uuid_still_exists = False
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if uuid_still_exists:
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# Good to go
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self.processing_node.restart_task(self.uuid)
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else:
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# Task has been purged (or processing node is offline)
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# TODO: what if processing node went offline?
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# Process this as a new task
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# Removing its UUID will cause the scheduler
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# to process this the next tick
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self.uuid = ''
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self.console_output = ""
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self.processing_time = -1
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self.status = None
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self.last_error = None
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self.pending_action = None
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self.save()
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else:
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raise ProcessingException("Cannot restart a task that has no processing node or UUID")
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elif self.pending_action == pending_actions.REMOVE:
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logger.info("Removing task {}".format(self))
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if self.processing_node and self.uuid:
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# Attempt to delete the resources on the processing node
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# We don't care if this fails, as resources on processing nodes
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# Are expected to be purged on their own after a set amount of time anyway
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try:
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self.processing_node.remove_task(self.uuid)
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except ProcessingException:
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pass
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# What's more important is that we delete our task properly here
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self.delete()
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# Stop right here!
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return
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except ProcessingException as e:
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self.last_error = str(e)
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self.save()
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if self.processing_node:
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# Need to update status (first time, queued or running?)
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if self.uuid and self.status in [None, status_codes.QUEUED, status_codes.RUNNING]:
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# Update task info from processing node
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try:
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info = self.processing_node.get_task_info(self.uuid)
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self.processing_time = info["processingTime"]
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self.status = info["status"]["code"]
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current_lines_count = len(self.console_output.split("\n")) - 1
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self.console_output += self.processing_node.get_task_console_output(self.uuid, current_lines_count)
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if "errorMessage" in info["status"]:
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self.last_error = info["status"]["errorMessage"]
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# Has the task just been canceled, failed, or completed?
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if self.status in [status_codes.FAILED, status_codes.COMPLETED, status_codes.CANCELED]:
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logger.info("Processing status: {} for {}".format(self.status, self))
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if self.status == status_codes.COMPLETED:
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try:
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assets_dir = self.assets_path("")
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if not os.path.exists(assets_dir):
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os.makedirs(assets_dir)
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logger.info("Downloading all.zip for {}".format(self))
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# Download all assets
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zip_stream = self.processing_node.download_task_asset(self.uuid, "all.zip")
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zip_path = os.path.join(assets_dir, "all.zip")
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with open(zip_path, 'wb') as fd:
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for chunk in zip_stream.iter_content(4096):
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fd.write(chunk)
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logger.info("Done downloading all.zip for {}".format(self))
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# Extract from zip
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with zipfile.ZipFile(zip_path, "r") as zip_h:
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zip_h.extractall(assets_dir)
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logger.info("Extracted all.zip for {}".format(self))
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# Add to database orthophoto
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orthophoto_path = os.path.realpath(self.assets_path("odm_orthophoto", "odm_orthophoto.tif"))
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if os.path.exists(orthophoto_path):
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orthophoto = GDALRaster(orthophoto_path, write=True)
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# We need to transform to 4326 before we can store it
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# as an offdb raster field
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orthophoto_4326_path = os.path.realpath(self.assets_path("odm_orthophoto", "odm_orthophoto_4326.tif"))
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self.orthophoto = orthophoto.transform(4326, 'GTiff', orthophoto_4326_path)
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logger.info("Imported orthophoto {} for {}".format(orthophoto_4326_path, self))
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self.save()
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except ProcessingException as e:
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self.set_failure(str(e))
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else:
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# FAILED, CANCELED
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self.save()
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else:
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# Still waiting...
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self.save()
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except ProcessingException as e:
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self.set_failure(str(e))
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except ConnectionRefusedError as e:
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logger.warning("Task {} cannot communicate with processing node: {}".format(self, str(e)))
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# In the future we might want to retry instead of just failing
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#self.set_failure(str(e))
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def get_tile_path(self, z, x, y):
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return self.assets_path("orthophoto_tiles", z, x, "{}.png".format(y))
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def get_tile_json_url(self):
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return "/api/projects/{}/tasks/{}/tiles.json".format(self.project.id, self.id)
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def get_tile_json_data(self):
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return {
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'url': self.get_tile_json_url(),
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'meta': {
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'task': self.id,
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'project': self.project.id
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}
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}
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def delete(self, using=None, keep_parents=False):
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directory_to_delete = os.path.join(settings.MEDIA_ROOT,
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task_directory_path(self.id, self.project.id))
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super(Task, self).delete(using, keep_parents)
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# Remove files related to this task
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try:
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shutil.rmtree(directory_to_delete)
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except FileNotFoundError as e:
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logger.warn(e)
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def set_failure(self, error_message):
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logger.error("{} ERROR: {}".format(self, error_message))
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self.last_error = error_message
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self.status = status_codes.FAILED
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self.save()
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class Meta:
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permissions = (
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('view_task', 'Can view task'),
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)
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def image_directory_path(image_upload, filename):
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return assets_directory_path(image_upload.task.id, image_upload.task.project.id, filename)
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class ImageUpload(models.Model):
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task = models.ForeignKey(Task, on_delete=models.CASCADE, help_text="Task this image belongs to")
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image = models.ImageField(upload_to=image_directory_path, help_text="File uploaded by a user")
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def __str__(self):
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return self.image.name
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def path(self):
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return self.image.path
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