From f21d28315aa632cdb9f84ea8787762d1e27b4310 Mon Sep 17 00:00:00 2001
From: Bryan Newbold <bnewbold@robocracy.org>
Date: Thu, 15 Nov 2018 12:21:45 -0800
Subject: refactoring harvesters

---
 python/fatcat_tools/harvest/ingest_common.py | 127 ---------------------------
 1 file changed, 127 deletions(-)
 delete mode 100644 python/fatcat_tools/harvest/ingest_common.py

(limited to 'python/fatcat_tools/harvest/ingest_common.py')

diff --git a/python/fatcat_tools/harvest/ingest_common.py b/python/fatcat_tools/harvest/ingest_common.py
deleted file mode 100644
index 67ff3dc3..00000000
--- a/python/fatcat_tools/harvest/ingest_common.py
+++ /dev/null
@@ -1,127 +0,0 @@
-
-"""
-logic:
-- on start, fetch latest date from state feed
-- in a function (unit-testable), decide which dates to ingest
-- for each date needing update:
-    - start a loop for just that date, using resumption token for this query
-    - when done, publish to state feed, with immediate sync
-"""
-
-import re
-import sys
-import csv
-import json
-import requests
-import itertools
-import datetime
-from pykafka import KafkaClient
-
-from fatcat_tools.workers.worker_common import most_recent_message
-
-DATE_FMT = "%Y-%m-%d"
-
-class DoiApiHarvest:
-    """
-    This class supports core features for both the Crossref and Datacite REST
-    APIs for fetching updated metadata (the Datacite API seems to be moduled on
-    the Crossref API).
-
-    Implementations must provide the push results function.
-    """
-
-    def __init__(self, kafka_hosts, produce_topic, state_topic, api_host_url,
-            contact_email, start_date=None, end_date=None):
-        self.loop_sleep = 60*60 # how long to wait, in seconds, between date checks
-        self.api_batch_size = 50
-        self.api_host_url = api_host_url
-        self.produce_topic = produce_topic
-        self.state_topic = state_topic
-        self.contact_email = contact_email
-        self.kafka = KafkaClient(hosts=kafka_hosts, broker_version="1.0.0")
-        self.is_update_filter = None
-        self.update_filter_name = "index"
-
-        # these are both optional, and should be datetime.date
-        self.start_date = start_date
-        self.end_date = end_date
-
-    def get_latest_date(self):
-
-        state_topic = self.kafka.topics[self.state_topic]
-        latest = most_recent_message(state_topic)
-        if latest:
-            latest = datetime.datetime.strptime(latest.decode('utf-8'), DATE_FMT).date()
-        print("Latest date found: {}".format(latest))
-        return latest
-
-    def fetch_date(self, date):
-
-        state_topic = self.kafka.topics[self.state_topic]
-        produce_topic = self.kafka.topics[self.produce_topic]
- 
-        date_str = date.strftime(DATE_FMT)
-        filter_param = 'from-{index}-date:{},until-{index}-date:{}'.format(
-            date_str, date_str, index=self.update_filter_name)
-        if self.is_update_filter is not None:
-            filter_param += ',is_update:{}'.format(bool(is_update))
-        params = {
-            'filter': filter_param,
-            'rows': self.api_batch_size,
-            'cursor': '*',
-        }
-        headers = {
-            'User-Agent': 'fatcat_tools/0.1.0 (https://fatcat.wiki; mailto:{}) python-requests'.format(self.contact_email),
-        }
-        count = 0
-        with produce_topic.get_producer() as producer:
-            while True:
-                http_resp = requests.get(self.api_host_url, params, headers=headers)
-                assert http_resp.status_code is 200
-                resp = http_resp.json()
-                items = resp['message']['items']
-                count += len(items)
-                print("... got {} ({} of {}) in {}".format(len(items), count,
-                    resp['message']['total-results']), http_resp.elapsed)
-                #print(json.dumps(resp))
-                for work in items:
-                    producer.produce(json.dumps(work).encode('utf-8'))
-                if len(items) < params['rows']:
-                    break
-                params['cursor'] = resp['message']['next-cursor']
-
-        # record our completion state
-        with state_topic.get_sync_producer() as producer:
-            producer.produce(date.strftime(DATE_FMT).encode('utf-8'))
-        
-
-    def run_once(self):
-        today_utc = datetime.datetime.utcnow().date()
-        if self.start_date is None:
-            self.start_date = self.get_latest_date()
-            if self.start_date: 
-                # if we are continuing, start day after last success
-                self.start_date = self.start_date + datetime.timedelta(days=1)
-        if self.start_date is None:
-            # bootstrap to yesterday (don't want to start on today until it's over)
-            self.start_date = datetime.datetime.utcnow().date()
-        if self.end_date is None:
-            # bootstrap to yesterday (don't want to start on today until it's over)
-            self.end_date = today_utc - datetime.timedelta(days=1)
-        print("Harvesting from {} through {}".format(self.start_date, self.end_date))
-        current = self.start_date
-        while current <= self.end_date:
-            print("Fetching DOIs updated on {} (UTC)".format(current))
-            self.fetch_date(current)
-            current += datetime.timedelta(days=1)
-        print("Crossref DOI ingest caught up through {}".format(self.end_date))
-        return self.end_date
-
-    def run_loop(self):
-        while True:
-            last = self.run_once()
-            self.start_date = last
-            self.end_date = None
-            print("Sleeping {} seconds...".format(self.loop_sleep))
-            time.sleep(self.loop_sleep())
-
-- 
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