ArchiveBox/archivebox/extractors/headers.py

70 lines
1.8 KiB
Python

__package__ = 'archivebox.extractors'
from pathlib import Path
from typing import Optional
from ..index.schema import Link, ArchiveResult, ArchiveOutput
from ..system import atomic_write
from ..util import (
enforce_types,
get_headers,
)
from ..config import (
TIMEOUT,
CURL_BINARY,
CURL_ARGS,
CURL_USER_AGENT,
CURL_VERSION,
CHECK_SSL_VALIDITY,
SAVE_HEADERS
)
from ..logging_util import TimedProgress
@enforce_types
def should_save_headers(link: Link, out_dir: Optional[str]=None, overwrite: Optional[bool]=False) -> bool:
out_dir = out_dir or Path(link.link_dir)
if not overwrite and (out_dir / 'headers.json').exists():
return False
return SAVE_HEADERS
@enforce_types
def save_headers(link: Link, out_dir: Optional[str]=None, timeout: int=TIMEOUT) -> ArchiveResult:
"""Download site headers"""
out_dir = Path(out_dir or link.link_dir)
output_folder = out_dir.absolute()
output: ArchiveOutput = 'headers.json'
status = 'succeeded'
timer = TimedProgress(timeout, prefix=' ')
cmd = [
CURL_BINARY,
*CURL_ARGS,
'--head',
'--max-time', str(timeout),
*(['--user-agent', '{}'.format(CURL_USER_AGENT)] if CURL_USER_AGENT else []),
*([] if CHECK_SSL_VALIDITY else ['--insecure']),
link.url,
]
try:
json_headers = get_headers(link.url, timeout=timeout)
output_folder.mkdir(exist_ok=True)
atomic_write(str(output_folder / "headers.json"), json_headers)
except (Exception, OSError) as err:
status = 'failed'
output = err
finally:
timer.end()
return ArchiveResult(
cmd=cmd,
pwd=str(out_dir),
cmd_version=CURL_VERSION,
output=output,
status=status,
**timer.stats,
)