import re import sys import csv import json import itertools from collections import Counter import pykafka import fatcat_client from fatcat_client.rest import ApiException # from: https://docs.python.org/3/library/itertools.html def grouper(iterable, n, fillvalue=None): "Collect data into fixed-length chunks or blocks" args = [iter(iterable)] * n return itertools.zip_longest(*args, fillvalue=fillvalue) def make_kafka_consumer(hosts, env, topic_suffix, group): topic_name = "fatcat-{}.{}".format(env, topic_suffix).encode('utf-8') client = pykafka.KafkaClient(hosts=hosts, broker_version="1.0.0") consume_topic = client.topics[topic_name] print("Consuming from kafka topic {}, group {}".format(topic_name, group)) consumer = consume_topic.get_balanced_consumer( consumer_group=group.encode('utf-8'), managed=True, auto_commit_enable=True, auto_commit_interval_ms=30000, # 30 seconds compacted_topic=True, ) return consumer class FatcatImporter: """ Base class for fatcat importers """ def __init__(self, host_url, issn_map_file=None): conf = fatcat_client.Configuration() conf.host = host_url self.api = fatcat_client.DefaultApi(fatcat_client.ApiClient(conf)) self._issnl_id_map = dict() self._orcid_id_map = dict() self._doi_id_map = dict() self._issn_issnl_map = None self._orcid_regex = re.compile("^\\d{4}-\\d{4}-\\d{4}-\\d{3}[\\dX]$") if issn_map_file: self.read_issn_map_file(issn_map_file) self.counts = Counter({'insert': 0, 'update': 0, 'processed_lines': 0}) def describe_run(self): print("Processed {} lines, inserted {}, updated {}.".format( self.counts['processed_lines'], self.counts['insert'], self.counts['update'])) def create_row(self, row, editgroup_id=None): # sub-classes expected to implement this raise NotImplementedError def create_batch(self, rows, editgroup_id=None): # sub-classes expected to implement this raise NotImplementedError def process_source(self, source, group_size=100): """Creates and auto-accepts editgroup every group_size rows""" eg = self.api.create_editgroup( fatcat_client.Editgroup(editor_id='aaaaaaaaaaaabkvkaaaaaaaaae')) i = 0 for i, row in enumerate(source): self.create_row(row, editgroup_id=eg.editgroup_id) if i > 0 and (i % group_size) == 0: self.api.accept_editgroup(eg.editgroup_id) eg = self.api.create_editgroup( fatcat_client.Editgroup(editor_id='aaaaaaaaaaaabkvkaaaaaaaaae')) self.counts['processed_lines'] += 1 if i == 0 or (i % group_size) != 0: self.api.accept_editgroup(eg.editgroup_id) def process_batch(self, source, size=50, decode_kafka=False): """Reads and processes in batches (not API-call-per-)""" for rows in grouper(source, size): if decode_kafka: rows = [msg.value.decode('utf-8') for msg in rows] self.counts['processed_lines'] += len(rows) eg = self.api.create_editgroup( fatcat_client.Editgroup(editor_id='aaaaaaaaaaaabkvkaaaaaaaaae')) self.create_batch(rows, editgroup_id=eg.editgroup_id) def process_csv_source(self, source, group_size=100, delimiter=','): reader = csv.DictReader(source, delimiter=delimiter) self.process_source(reader, group_size) def process_csv_batch(self, source, size=50, delimiter=','): reader = csv.DictReader(source, delimiter=delimiter) self.process_batch(reader, size) def is_issnl(self, issnl): return len(issnl) == 9 and issnl[4] == '-' def lookup_issnl(self, issnl): """Caches calls to the ISSN-L lookup API endpoint in a local dict""" if issnl in self._issnl_id_map: return self._issnl_id_map[issnl] container_id = None try: rv = self.api.lookup_container(issnl=issnl) container_id = rv.ident except ApiException as ae: # If anything other than a 404 (not found), something is wrong assert ae.status == 404 self._issnl_id_map[issnl] = container_id # might be None return container_id def is_orcid(self, orcid): return self._orcid_regex.match(orcid) is not None def lookup_orcid(self, orcid): """Caches calls to the Orcid lookup API endpoint in a local dict""" if not self.is_orcid(orcid): return None if orcid in self._orcid_id_map: return self._orcid_id_map[orcid] creator_id = None try: rv = self.api.lookup_creator(orcid=orcid) creator_id = rv.ident except ApiException as ae: # If anything other than a 404 (not found), something is wrong assert ae.status == 404 self._orcid_id_map[orcid] = creator_id # might be None return creator_id def is_doi(self, doi): return doi.startswith("10.") and doi.count("/") >= 1 def lookup_doi(self, doi): """Caches calls to the doi lookup API endpoint in a local dict""" assert self.is_doi(doi) doi = doi.lower() if doi in self._doi_id_map: return self._doi_id_map[doi] release_id = None try: rv = self.api.lookup_release(doi=doi) release_id = rv.ident except ApiException as ae: # If anything other than a 404 (not found), something is wrong assert ae.status == 404 self._doi_id_map[doi] = release_id # might be None return release_id def read_issn_map_file(self, issn_map_file): print("Loading ISSN map file...") self._issn_issnl_map = dict() for line in issn_map_file: if line.startswith("ISSN") or len(line) == 0: continue (issn, issnl) = line.split()[0:2] self._issn_issnl_map[issn] = issnl # double mapping makes lookups easy self._issn_issnl_map[issnl] = issnl print("Got {} ISSN-L mappings.".format(len(self._issn_issnl_map))) def issn2issnl(self, issn): if issn is None: return None return self._issn_issnl_map.get(issn)