219 lines
9.6 KiB
Python
219 lines
9.6 KiB
Python
import hashlib
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import mimetypes
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import os
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import subprocess
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from typing import ClassVar
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from datetime import timedelta
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from zipfile import Path
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from django.utils import timezone
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from archivebox.misc.hashing import get_dir_info
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from core.models import ArchiveResult
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import abx
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import archivebox
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# class Extractor:
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# # static class variables
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# name: ClassVar[str] = 'ytdlp'
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# verbose_name: ClassVar[str] = 'YT-DLP'
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# binaries: ClassVar[tuple[str, ...]] = ()
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# daemons: ClassVar[tuple[str, ...]] = ()
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# timeout: ClassVar[int] = 60
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#
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# # instance variables
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# ARCHIVERESULT: ArchiveResult
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# CONFIG: dict[str, object]
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# BINARIES: dict[str, object]
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# DAEMONS: dict[str, object]
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#
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# def __init__(self, archiveresult: ArchiveResult, extra_config: dict | None=None):
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# assert archiveresult.pk, 'ArchiveResult must be saved to DB before it can be extracted'
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# self.archiveresult = self.ARCHIVERESULT = archiveresult
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# self.CONFIG = archivebox.pm.hook.get_SCOPE_CONFIG(archiveresult=self.archiveresult, extra=extra_config)
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# all_binaries = abx.as_dict(archivebox.pm.hook.get_BINARIES())
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# all_daemons = abx.as_dict(archivebox.pm.hook.get_DAEMONS())
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# self.BINARIES = {
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# binary_name: all_binaries[binary_name]
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# for binary_name in self.binaries
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# }
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# self.DAEMONS = {
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# daemon_name: all_daemons[daemon_name]
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# for daemon_name in self.daemons
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# }
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# def extract(self, config: dict | None=None) -> 'ArchiveResult':
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# """
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# - making sure any binaries the extractor depends on are installed and loaded
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# - creating a new temporary working directory under the snapshot dir to hold extractor output
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# - setting up a timer signal to kill the extractor if it runs too long
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# - passing the extractor the URLs, temporary working directory, and config dict of options
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# - running the extractor in a shell subprocess and collecting stdout/stderr
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# - capturing the extractor's exit code
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# - if extractor exits with 29 (RetryError), it should set the status to 'BACKOFF' and set retry_at to a datetime in the future
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# - if extractor exits with 50 (NotApplicable), it should set the status to 'SKIPPED', and set retry_at to None
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# - setting the correct permissions and ownership on all the output files
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# - generating the merkle tree of all the output files and their hashes
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# - generating a thumbnail of the main output (or collecting one provided by the extractor)
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# - detecting any special outputs files that need to be parsed for other parts of the system (content-types? )
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# - metadata.json -> ArchiveResult.output_json
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# - outlinks.jsonl -> ArchiveResult.output_links
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# - search_texts.txt -> ArchiveResult.index_texts
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# - .merkle.json -> ArchiveResult.output_files
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# - videos.jsonl -> ArchiveResult.output_videos
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# - audios.jsonl -> ArchiveResult.output_audios
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# - images.jsonl -> ArchiveResult.output_images
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# - htmls.jsonl -> ArchiveResult.output_htmls
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# - saving all the result metadata to the ArchiveResult in the database
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# """
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# archiveresult = self.ARCHIVERESULT
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# # config = get_scope_config(archiveresult=archiveresult.snapshot.url, env=...)
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# self.before_extract()
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# error = Exception('Failed to start extractor')
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# stdout = ''
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# stderr = ''
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# try:
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# proc = archiveresult.EXTRACTOR.spawn(url=archiveresult.snapshot.url, binaries=binaries, daemons=daemons, cwd=cwd, config=config)
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# stdout, stderr = proc.communicate()
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# error = None
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# except Exception as err:
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# error = err
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# finally:
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# self.after_extract(error=error)
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# return archiveresult
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# def should_extract(self):
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# if self.archiveresult.snapshot.url.startswith('https://youtube.com/'):
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# return True
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# return False
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# def load_binaries(self):
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# return {
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# bin_name: binary.load()
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# for bin_name, binary in self.BINARIES.items()
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# }
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# def load_daemons(self):
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# return {
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# daemon_name: daemon.load()
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# for daemon_name, daemon in self.DAEMONS.items()
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# }
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# def output_dir_name(self):
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# # e.g. 'ytdlp'
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# return f'{self.name}'
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# @property
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# def OUTPUT_DIR(self):
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# return self.archiveresult.snapshot_dir / self.output_dir_name()
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# def before_extract(self):
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# # create self.archiveresult.snapshot_dir / self.archiveresult.extractor / dir
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# # chown, chmod, etc.
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# binaries = self.load_binaries()
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# daemons = self.load_daemons()
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# cmd = self.archiveresult.EXTRACTOR.get_cmd(binaries=binaries, daemons=daemons)
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# cmd_version = self.archiveresult.EXTRACTOR.get_cmd_version(binaries=binaries, daemons=daemons)
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# self.OUTPUT_DIR.mkdir(parents=True, exist_ok=True)
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# os.chmod(self.OUTPUT_DIR, 0o755)
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# self.archiveresult.status = self.archiveresult.StatusChoices.STARTED
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# self.archiveresult.retry_at = timezone.now() + timedelta(seconds=self.timeout)
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# self.archiveresult.start_ts = timezone.now()
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# self.archiveresult.end_ts = None
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# self.archiveresult.output = None
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# self.archiveresult.output_path = str(self.OUTPUT_DIR.relative_to(self.archiveresult.snapshot_dir))
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# self.archiveresult.cmd = cmd
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# self.archiveresult.cmd_version = cmd_version
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# self.archiveresult.machine = Machine.objects.get_current()
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# self.archiveresult.iface = NetworkInterface.objects.get_current()
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# self.archiveresult.save()
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# self.archiveresult.write_indexes()
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# def extract(self, url: str, binaries: dict, daemons: dict, cwd: Path, config: dict):
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# proc = subprocess.run(self.archiveresult.cmd, cwd=self.archiveresult.cwd, env=os.environ.update(binaries), timeout=self.timeout, shell=True, capture_output=True, text=True)
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# self.archiveresult.stdout = proc.stdout
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# self.archiveresult.stderr = proc.stderr
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# self.archiveresult.returncode = proc.returncode
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# self.archiveresult.save()
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# self.archiveresult.write_indexes()
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# def determine_status(self):
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# if self.archiveresult.returncode == 29:
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# return self.archiveresult.StatusChoices.BACKOFF, timezone.now() + timedelta(seconds=self.timeout)
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# elif self.archiveresult.returncode == 50:
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# return self.archiveresult.StatusChoices.SKIPPED, None
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# else:
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# return self.archiveresult.StatusChoices.FAILED, None
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# def collect_outputs(self, cwd: Path):
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# for file in cwd.rglob('*'):
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# path = file.relative_to(cwd)
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# os.chmod(file, 0o644)
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# #os.chown(file, ARCHIVEBOX_UID, ARCHIVEBOX_GID)
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# self.archiveresult.outputs.append({
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# 'type': 'FILE',
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# 'path': file.relative_to(cwd),
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# 'size': file.stat().st_size,
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# 'ext': file.suffix,
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# 'mimetype': mimetypes.guess_type(file)[0],
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# 'sha256': hashlib.sha256(file.read_bytes()).hexdigest(),
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# 'blake3': hashlib.blake3(file.read_bytes()).hexdigest(),
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# 'created_at': file.stat().st_ctime,
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# 'modified_at': file.stat().st_mtime,
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# 'symlinks': [
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# 'screenshot.png',
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# 'example.com',
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# ]
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# })
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# outlinks = parse_outlinks(file)
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# if outlinks:
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# self.archiveresult.outputs.append({
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# 'type': 'OUTLINK',
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# 'url': outlink.target,
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# 'selector': outlink.selector,
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# 'text': outlink.text,
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# })
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#
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# if path.endswith('favicon.ico'):
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# self.archiveresult.outputs.append({
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# 'type': 'FAVICON',
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# 'symlinks': {
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# 'favicon': output_file['path'],
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# 'favicon.ico': output_file['path'],
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# 'favicon.png': output_file['path'].with_suffix('.png'),
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# },
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# 'path': output_file['path'],
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# })
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# if path.endswith('.pdf'):
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# self.archiveresult.outputs.append({
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# 'type': 'PDF',
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# 'path': file.relative_to(cwd),
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# })
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#
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# if 'text/plain' in mimetypes.guess_type(file):
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# self.archiveresult.outputs.append({
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# 'type': 'SEARCHTEXT',
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# 'path': file.relative_to(self.archiveresult.OUTPUT_DIR),
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# 'archiveresult_id': self.archiveresult.id,
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# })
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#
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# def after_extract(self, error: Exception | None=None):
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# status, retry_at = self.determine_status()
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#
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# self.archiveresult.error = f'{type(error).__name__}: {error}' if error else None
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# self.archiveresult.status = self.archiveresult.StatusChoices.FAILED if error else self.archiveresult.StatusChoices.SUCCEEDED
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# self.archiveresult.retry_at = None
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# self.archiveresult.end_ts = timezone.now()
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# self.archiveresult.output = self.archiveresult.outputs[0].path
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# self.archiveresult.save()
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# self.archiveresult.write_indexes()
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