import sys import json import sqlite3 import itertools import fatcat_client from .common import EntityImporter, clean, make_rel_url class MatchedImporter(EntityImporter): """ Importer for "file to crossref DOI" matches. These matches are currently generated by Internet Archive hadoop jobs written in scala (part of the 'sandcrawler' repo/project), but could be generated by other parties as well. Input format is JSON with keys: - dois (list) - sha1 (hex) - md5 (hex) - sha256 (hex) - size (int) - cdx (list of objects) - dt - url - mimetype - urls (list of strings... or objects?) Future handlings/extensions: - core_id, wikidata_id, pmcid, pmid: not as lists """ def __init__(self, api, **kwargs): eg_desc = kwargs.get('editgroup_description', "Import of large-scale file-to-release match results. Source of metadata varies.") eg_extra = kwargs.get('editgroup_extra', dict()) eg_extra['agent'] = eg_extra.get('agent', 'fatcat_tools.MatchedImporter') super().__init__(api, editgroup_description=eg_desc, editgroup_extra=eg_extra) self.default_link_rel = kwargs.get("default_link_rel", "web") self.default_mime = kwargs.get("default_mime", None) def want(self, raw_record): return True def parse_record(self, obj): dois = [d.lower() for d in obj.get('dois', [])] # lookup dois re_list = set() for doi in dois: try: re = self.api.lookup_release(doi=doi) except fatcat_client.rest.ApiException as err: if err.status != 404: raise err re = None if re is None: print("DOI not found: {}".format(doi)) else: re_list.add(re.ident) release_ids = list(re_list) if len(release_ids) == 0: return None # parse URLs and CDX urls = set() for url in obj.get('url', []): url = make_rel_url(url, default_link_rel=self.default_link_rel) if url != None: urls.add(url) for cdx in obj.get('cdx', []): original = cdx['url'] wayback = "https://web.archive.org/web/{}/{}".format( cdx['dt'], original) urls.add(("webarchive", wayback)) url = make_rel_url(original, default_link_rel=self.default_link_rel) if url != None: urls.add(url) urls = [fatcat_client.FileEntityUrls(rel=rel, url=url) for (rel, url) in urls] if len(urls) == 0: return None size = obj.get('size') if size: size = int(size) fe = fatcat_client.FileEntity( md5=obj.get('md5'), sha1=obj['sha1'], sha256=obj.get('sha256'), size=size, mimetype=obj.get('mimetype'), release_ids=release_ids, urls=urls, ) return fe def try_update(self, fe): # lookup sha1, or create new entity existing = None try: existing = self.api.lookup_file(sha1=fe.sha1) except fatcat_client.rest.ApiException as err: if err.status != 404: raise err if not existing: return True fe.release_ids = list(set(fe.release_ids + existing.release_ids)) if set(fe.release_ids) == set(existing.release_ids) and len(existing.urls) > 0: # no new release matches *and* there are already existing URLs self.counts['exists'] += 1 return False # merge the existing into this one and update existing.urls = list(set([(u.rel, u.url) for u in fe.urls + existing.urls])) existing.urls = [fatcat_client.FileEntityUrls(rel=rel, url=url) for (rel, url) in existing.urls] existing.release_ids = list(set(fe.release_ids + existing.release_ids)) existing.mimetype = existing.mimetype or fe.mimetype existing.size = existing.size or fe.size existing.md5 = existing.md5 or fe.md5 existing.sha256 = existing.sha256 or fe.sha256 self.api.update_file(existing.ident, existing, editgroup_id=self.get_editgroup_id()) self.counts['update'] += 1 return False def insert_batch(self, batch): self.api.create_file_batch(batch, autoaccept=True, description=self.editgroup_description, extra=json.dumps(self.editgroup_extra))