#
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
"""Utilities for working with NEXmark data stream."""
import apache_beam as beam
from apache_beam.testing.benchmarks.nexmark.models import nexmark_model
AUCTION_TAG = 'auctions'
BID_TAG = 'bids'
PERSON_TAG = 'person'
[docs]
class ResultNames:
SELLER = 'seller'
PRICE = 'price'
NAME = 'name'
CITY = 'city'
STATE = 'state'
AUCTION_ID = 'auction_id'
ID = 'id'
RESERVE = 'reserve'
CATEGORY = 'category'
IS_LAST = 'is_last'
BIDDER_ID = 'bidder_id'
BID_COUNT = 'bid_count'
NUM = 'num'
[docs]
def is_bid(event):
return isinstance(event, nexmark_model.Bid)
[docs]
def is_auction(event):
return isinstance(event, nexmark_model.Auction)
[docs]
def is_person(event):
return isinstance(event, nexmark_model.Person)
[docs]
def auction_or_bid(event):
return isinstance(event, (nexmark_model.Auction, nexmark_model.Bid))
[docs]
class JustBids(beam.PTransform):
[docs]
def expand(self, pcoll):
return pcoll | "IsBid" >> beam.Filter(is_bid)
[docs]
class JustAuctions(beam.PTransform):
[docs]
def expand(self, pcoll):
return pcoll | "IsAuction" >> beam.Filter(is_auction)
[docs]
class JustPerson(beam.PTransform):
[docs]
def expand(self, pcoll):
return pcoll | "IsPerson" >> beam.Filter(is_person)
[docs]
class AuctionByIdFn(beam.DoFn):
[docs]
def process(self, element):
yield element.id, element
[docs]
class BidByAuctionIdFn(beam.DoFn):
[docs]
def process(self, element):
yield element.auction, element
[docs]
class PersonByIdFn(beam.DoFn):
[docs]
def process(self, element):
yield element.id, element
[docs]
class AuctionBySellerFn(beam.DoFn):
[docs]
def process(self, element):
yield element.seller, element