287 lines
8.9 KiB
Python
287 lines
8.9 KiB
Python
__package__ = 'archivebox.core'
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import uuid
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import json
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from pathlib import Path
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from typing import Optional, List
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from django.db import models
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from django.utils.functional import cached_property
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from django.utils.text import slugify
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from django.core.cache import cache
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from django.urls import reverse
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from django.db.models import Case, When, Value, IntegerField
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from django.contrib.auth.models import User # noqa
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from ..config import ARCHIVE_DIR, ARCHIVE_DIR_NAME
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from ..system import get_dir_size
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from ..util import parse_date, base_url, hashurl
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from ..index.schema import Link
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from ..index.html import snapshot_icons
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from ..extractors import get_default_archive_methods, ARCHIVE_METHODS_INDEXING_PRECEDENCE
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EXTRACTORS = [(extractor[0], extractor[0]) for extractor in get_default_archive_methods()]
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STATUS_CHOICES = [
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("succeeded", "succeeded"),
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("failed", "failed"),
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("skipped", "skipped")
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]
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try:
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JSONField = models.JSONField
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except AttributeError:
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import jsonfield
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JSONField = jsonfield.JSONField
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class Tag(models.Model):
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"""
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Based on django-taggit model
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"""
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id = models.AutoField(primary_key=True, serialize=False, verbose_name='ID')
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name = models.CharField(unique=True, blank=False, max_length=100)
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# slug is autoset on save from name, never set it manually
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slug = models.SlugField(unique=True, blank=True, max_length=100)
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class Meta:
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verbose_name = "Tag"
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verbose_name_plural = "Tags"
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def __str__(self):
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return self.name
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def slugify(self, tag, i=None):
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slug = slugify(tag)
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if i is not None:
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slug += "_%d" % i
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return slug
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def save(self, *args, **kwargs):
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if self._state.adding and not self.slug:
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self.slug = self.slugify(self.name)
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# if name is different but slug conficts with another tags slug, append a counter
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# with transaction.atomic():
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slugs = set(
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type(self)
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._default_manager.filter(slug__startswith=self.slug)
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.values_list("slug", flat=True)
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)
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i = None
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while True:
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slug = self.slugify(self.name, i)
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if slug not in slugs:
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self.slug = slug
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return super().save(*args, **kwargs)
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i = 1 if i is None else i+1
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else:
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return super().save(*args, **kwargs)
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class Snapshot(models.Model):
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id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
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url = models.URLField(unique=True, db_index=True)
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timestamp = models.CharField(max_length=32, unique=True, db_index=True)
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title = models.CharField(max_length=512, null=True, blank=True, db_index=True)
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added = models.DateTimeField(auto_now_add=True, db_index=True)
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updated = models.DateTimeField(auto_now=True, blank=True, null=True, db_index=True)
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tags = models.ManyToManyField(Tag, blank=True)
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keys = ('url', 'timestamp', 'title', 'tags', 'updated')
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def __repr__(self) -> str:
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title = self.title or '-'
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return f'[{self.timestamp}] {self.url[:64]} ({title[:64]})'
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def __str__(self) -> str:
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title = self.title or '-'
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return f'[{self.timestamp}] {self.url[:64]} ({title[:64]})'
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@classmethod
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def from_json(cls, info: dict):
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info = {k: v for k, v in info.items() if k in cls.keys}
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return cls(**info)
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def as_json(self, *args) -> dict:
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args = args or self.keys
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return {
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key: getattr(self, key)
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if key != 'tags' else self.tags_str()
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for key in args
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}
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def as_link(self) -> Link:
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return Link.from_json(self.as_json())
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def as_link_with_details(self) -> Link:
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from ..index import load_link_details
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return load_link_details(self.as_link())
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def tags_str(self, nocache=True) -> str:
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cache_key = f'{self.id}-{(self.updated or self.added).timestamp()}-tags'
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calc_tags_str = lambda: ','.join(self.tags.order_by('name').values_list('name', flat=True))
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if nocache:
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tags_str = calc_tags_str()
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cache.set(cache_key, tags_str)
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return tags_str
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return cache.get_or_set(cache_key, calc_tags_str)
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def icons(self) -> str:
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return snapshot_icons(self)
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@cached_property
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def extension(self) -> str:
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from ..util import extension
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return extension(self.url)
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@cached_property
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def bookmarked(self):
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return parse_date(self.timestamp)
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@cached_property
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def bookmarked_date(self):
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# TODO: remove this
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return self.bookmarked
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@cached_property
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def is_archived(self):
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return self.as_link().is_archived
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@cached_property
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def num_outputs(self):
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return self.archiveresult_set.filter(status='succeeded').count()
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@cached_property
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def url_hash(self):
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return hashurl(self.url)
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@cached_property
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def base_url(self):
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return base_url(self.url)
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@cached_property
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def link_dir(self):
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return str(ARCHIVE_DIR / self.timestamp)
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@cached_property
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def archive_path(self):
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return '{}/{}'.format(ARCHIVE_DIR_NAME, self.timestamp)
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@cached_property
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def archive_size(self):
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cache_key = f'{str(self.id)[:12]}-{(self.updated or self.added).timestamp()}-size'
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def calc_dir_size():
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try:
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return get_dir_size(self.link_dir)[0]
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except Exception:
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return 0
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return cache.get_or_set(cache_key, calc_dir_size)
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@cached_property
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def thumbnail_url(self) -> Optional[str]:
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result = self.archiveresult_set.filter(
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extractor='screenshot',
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status='succeeded'
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).only('output').last()
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if result:
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return reverse('Snapshot', args=[f'{str(self.timestamp)}/{result.output}'])
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return None
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@cached_property
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def headers(self) -> Optional[dict]:
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try:
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return json.loads((Path(self.link_dir) / 'headers.json').read_text(encoding='utf-8').strip())
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except Exception:
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pass
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return None
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@cached_property
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def status_code(self) -> Optional[str]:
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return self.headers and self.headers.get('Status-Code')
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@cached_property
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def history(self) -> dict:
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# TODO: use ArchiveResult for this instead of json
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return self.as_link_with_details().history
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@cached_property
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def latest_title(self) -> Optional[str]:
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if self.title:
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return self.title # whoopdedoo that was easy
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try:
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# take longest successful title from ArchiveResult db history
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return sorted(
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self.archiveresult_set\
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.filter(extractor='title', status='succeeded', output__isnull=False)\
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.values_list('output', flat=True),
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key=lambda r: len(r),
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)[-1]
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except IndexError:
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pass
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try:
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# take longest successful title from Link json index file history
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return sorted(
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(
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result.output.strip()
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for result in self.history['title']
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if result.status == 'succeeded' and result.output.strip()
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),
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key=lambda r: len(r),
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)[-1]
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except (KeyError, IndexError):
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pass
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return None
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def save_tags(self, tags: List[str]=()) -> None:
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tags_id = []
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for tag in tags:
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if tag.strip():
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tags_id.append(Tag.objects.get_or_create(name=tag)[0].id)
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self.tags.clear()
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self.tags.add(*tags_id)
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class ArchiveResultManager(models.Manager):
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def indexable(self, sorted: bool = True):
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INDEXABLE_METHODS = [ r[0] for r in ARCHIVE_METHODS_INDEXING_PRECEDENCE ]
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qs = self.get_queryset().filter(extractor__in=INDEXABLE_METHODS,status='succeeded')
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if sorted:
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precedence = [ When(extractor=method, then=Value(precedence)) for method, precedence in ARCHIVE_METHODS_INDEXING_PRECEDENCE ]
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qs = qs.annotate(indexing_precedence=Case(*precedence, default=Value(1000),output_field=IntegerField())).order_by('indexing_precedence')
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return qs
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class ArchiveResult(models.Model):
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id = models.AutoField(primary_key=True, serialize=False, verbose_name='ID')
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uuid = models.UUIDField(default=uuid.uuid4, editable=False)
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snapshot = models.ForeignKey(Snapshot, on_delete=models.CASCADE)
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extractor = models.CharField(choices=EXTRACTORS, max_length=32)
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cmd = JSONField()
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pwd = models.CharField(max_length=256)
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cmd_version = models.CharField(max_length=128, default=None, null=True, blank=True)
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output = models.CharField(max_length=1024)
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start_ts = models.DateTimeField(db_index=True)
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end_ts = models.DateTimeField()
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status = models.CharField(max_length=16, choices=STATUS_CHOICES)
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objects = ArchiveResultManager()
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def __str__(self):
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return self.extractor
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