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from .elasticsearch import release_to_elasticsearch
def release_ingest_request(release, oa_only=False, ingest_request_source='fatcat', ingest_type=None):
"""
Takes a full release entity object and returns an ingest request (as dict),
or None if it seems like this release shouldn't be ingested.
The release entity should have the container, file, fileset, and webcapture
fields set.
The 'oa_only' boolean flag indicates that we should only return an ingest
request if we have reason to believe this is an OA release (or, eg, in
arxiv or pubmed central). Respecting this flag means we are likely to miss
a lot of "hybrid" and "bronze" content, but could reduce crawl load
significantly.
The type of the ingest request may depend on release type and container
metadata (eg, as to whether we expect a PDF, datasets, web page), so
calling code should check the returned type field.
"""
if release.state != 'active':
return None
# generate a URL where we expect to find fulltext
url = None
link_source = None
link_source_id = None
if release.ext_ids.arxiv:
url = "https://arxiv.org/pdf/{}.pdf".format(release.ext_ids.arxiv)
link_source = "arxiv"
link_source_id = release.ext_ids.arxiv
elif release.ext_ids.doi:
url = "https://doi.org/{}".format(release.ext_ids.doi)
link_source = "doi"
link_source_id = release.ext_ids.doi
elif release.ext_ids.pmcid:
# TODO: how to tell if an author manuscript in PMC vs. published?
#url = "https://www.ncbi.nlm.nih.gov/pmc/articles/{}/pdf/".format(release.ext_ids.pmcid)
url = "http://europepmc.org/backend/ptpmcrender.fcgi?accid={}&blobtype=pdf".format(release.ext_ids.pmcid)
link_source = "pmc"
link_source_id = release.ext_ids.pmcid
if not url:
return None
ext_ids = release.ext_ids.to_dict()
ext_ids = dict([(k, v) for (k, v) in ext_ids.items() if v])
if oa_only and link_source not in ('arxiv', 'pmc'):
es = release_to_elasticsearch(release)
if not es['is_oa']:
return None
# TODO: infer ingest type based on release_type or container metadata?
if not ingest_type:
ingest_type = 'pdf'
ingest_request = {
'ingest_type': ingest_type,
'ingest_request_source': ingest_request_source,
'base_url': url,
'release_stage': release.release_stage,
'fatcat': {
'release_ident': release.ident,
'work_ident': release.work_id,
},
'ext_ids': ext_ids,
}
if link_source and link_source_id:
ingest_request['link_source'] = link_source
ingest_request['link_source_id'] = link_source_id
return ingest_request
|
