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import requests
from grobid2json import teixml2json
from .workers import SandcrawlerWorker
from .misc import gen_file_metadata
from .ia import WaybackClient, WaybackError, PetaboxError
class GrobidClient(object):
def __init__(self, host_url="http://grobid.qa.fatcat.wiki", **kwargs):
self.host_url = host_url
self.consolidate_mode = int(kwargs.get('consolidate_mode', 2))
def process_fulltext(self, blob, consolidate_mode=None):
"""
Returns dict with keys:
- status_code
- status (slug)
- error_msg (if status == 'error')
- tei_xml (if status is 200)
TODO: persist connection for performance?
"""
assert blob
if consolidate_mode == None:
consolidate_mode = self.consolidate_mode
try:
grobid_response = requests.post(
self.host_url + "/api/processFulltextDocument",
files={
'input': blob,
'consolidateHeader': self.consolidate_mode,
'consolidateCitations': 0, # too expensive for now
'includeRawCitations': 1,
},
timeout=180.0,
)
except requests.Timeout:
return {
'status': 'error-timeout',
'status_code': -4, # heritrix3 "HTTP timeout" code
'error_msg': 'GROBID request (HTTP POST) timeout',
}
info = dict(
status_code=grobid_response.status_code,
)
if grobid_response.status_code == 200:
info['status'] = 'success'
info['tei_xml'] = grobid_response.text
if len(info['tei_xml']) > 12000000:
# XML is larger than Kafka message size, and much larger than
# an article in general; bail out
info['status'] = 'error'
info['error_msg'] = "response XML too large: {} bytes".format(len(info['tei_xml']))
info.pop('tei_xml')
else:
# response.text is .content decoded as utf-8
info['status'] = 'error'
info['error_msg'] = grobid_response.text[:10000]
return info
def metadata(self, result):
if result['status'] != 'success':
return None
tei_json = teixml2json(result['tei_xml'], encumbered=False)
meta = dict()
biblio = dict()
for k in ('title', 'authors', 'journal', 'date', 'doi', ):
if tei_json.get(k):
biblio[k] = tei_json[k]
meta['biblio'] = biblio
for k in ('grobid_version', 'grobid_timestamp', 'fatcat_release', 'language_code'):
if tei_json.get(k):
meta[k] = tei_json[k]
return meta
class GrobidWorker(SandcrawlerWorker):
def __init__(self, grobid_client, wayback_client=None, sink=None, **kwargs):
super().__init__()
self.grobid_client = grobid_client
self.wayback_client = wayback_client
self.sink = sink
self.consolidate_mode = 2
def process(self, record):
default_key = record['sha1hex']
if record.get('warc_path') and record.get('warc_offset'):
# it's a full CDX dict. fetch using WaybackClient
if not self.wayback_client:
raise Exception("wayback client not configured for this GrobidWorker")
try:
blob = self.wayback_client.fetch_petabox_body(
csize=record['warc_csize'],
offset=record['warc_offset'],
warc_path=record['warc_path'],
)
except (WaybackError, PetaboxError) as we:
return dict(
status="error-wayback",
error_msg=str(we),
source=record,
key=default_key,
)
elif record.get('url') and record.get('datetime'):
# it's a partial CDX dict or something? fetch using WaybackClient
if not self.wayback_client:
raise Exception("wayback client not configured for this GrobidWorker")
try:
blob = self.wayback_client.fetch_replay_body(
url=record['url'],
datetime=record['datetime'],
)
except WaybackError as we:
return dict(
status="error-wayback",
error_msg=str(we),
source=record,
key=default_key,
)
elif record.get('item') and record.get('path'):
# it's petabox link; fetch via HTTP
resp = requests.get("https://archive.org/serve/{}/{}".format(
record['item'], record['path']))
try:
resp.raise_for_status()
except Exception as e:
return dict(
status="error-petabox",
error_msg=str(e),
source=record,
key=default_key,
)
blob = resp.content
else:
raise ValueError("not a CDX (wayback) or petabox (archive.org) dict; not sure how to proceed")
if not blob:
return dict(
status="error",
error_msg="empty blob",
source=record,
key=default_key,
)
result = self.grobid_client.process_fulltext(blob, consolidate_mode=self.consolidate_mode)
result['file_meta'] = gen_file_metadata(blob)
result['source'] = record
result['key'] = result['file_meta']['sha1hex']
return result
class GrobidBlobWorker(SandcrawlerWorker):
"""
This is sort of like GrobidWorker, except it receives blobs directly,
instead of fetching blobs from some remote store.
"""
def __init__(self, grobid_client, sink=None, **kwargs):
super().__init__()
self.grobid_client = grobid_client
self.sink = sink
self.consolidate_mode = 2
def process(self, blob):
if not blob:
return None
result = self.grobid_client.process_fulltext(blob, consolidate_mode=self.consolidate_mode)
result['file_meta'] = gen_file_metadata(blob)
result['key'] = result['file_meta']['sha1hex']
return result
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