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| <h1>Source code for apache_beam.testing.benchmarks.nexmark.queries.query8</h1><div class="highlight"><pre> |
| <span></span><span class="c1">#</span> |
| <span class="c1"># Licensed to the Apache Software Foundation (ASF) under one or more</span> |
| <span class="c1"># contributor license agreements. See the NOTICE file distributed with</span> |
| <span class="c1"># this work for additional information regarding copyright ownership.</span> |
| <span class="c1"># The ASF licenses this file to You under the Apache License, Version 2.0</span> |
| <span class="c1"># (the "License"); you may not use this file except in compliance with</span> |
| <span class="c1"># the License. You may obtain a copy of the License at</span> |
| <span class="c1">#</span> |
| <span class="c1"># http://www.apache.org/licenses/LICENSE-2.0</span> |
| <span class="c1">#</span> |
| <span class="c1"># Unless required by applicable law or agreed to in writing, software</span> |
| <span class="c1"># distributed under the License is distributed on an "AS IS" BASIS,</span> |
| <span class="c1"># WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span> |
| <span class="c1"># See the License for the specific language governing permissions and</span> |
| <span class="c1"># limitations under the License.</span> |
| <span class="c1">#</span> |
| |
| <span class="sd">"""</span> |
| <span class="sd">Query 8, 'Monitor New Users'. Select people who have entered the system and</span> |
| <span class="sd">created auctions in the last 12 hours, updated every 12 hours. In CQL syntax::</span> |
| |
| <span class="sd"> SELECT Rstream(P.id, P.name, A.reserve)</span> |
| <span class="sd"> FROM Person [RANGE 12 HOUR] P, Auction [RANGE 12 HOUR] A</span> |
| <span class="sd"> WHERE P.id = A.seller;</span> |
| |
| <span class="sd">To make things a bit more dynamic and easier to test we'll use a much</span> |
| <span class="sd">shorter window.</span> |
| <span class="sd">"""</span> |
| |
| <span class="kn">import</span> <span class="nn">apache_beam</span> <span class="k">as</span> <span class="nn">beam</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.testing.benchmarks.nexmark.queries</span> <span class="kn">import</span> <span class="n">nexmark_query_util</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.testing.benchmarks.nexmark.queries.nexmark_query_util</span> <span class="kn">import</span> <span class="n">ResultNames</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.transforms</span> <span class="kn">import</span> <span class="n">window</span> |
| |
| |
| <div class="viewcode-block" id="load"><a class="viewcode-back" href="../../../../../../apache_beam.testing.benchmarks.nexmark.queries.query8.html#apache_beam.testing.benchmarks.nexmark.queries.query8.load">[docs]</a><span class="k">def</span> <span class="nf">load</span><span class="p">(</span><span class="n">events</span><span class="p">,</span> <span class="n">metadata</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">pipeline_options</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span> |
| <span class="c1"># window person and key by persons' id</span> |
| <span class="n">persons_by_id</span> <span class="o">=</span> <span class="p">(</span> |
| <span class="n">events</span> |
| <span class="o">|</span> <span class="n">nexmark_query_util</span><span class="o">.</span><span class="n">JustPerson</span><span class="p">()</span> |
| <span class="o">|</span> <span class="s1">'query8_window_person'</span> <span class="o">>></span> <span class="n">beam</span><span class="o">.</span><span class="n">WindowInto</span><span class="p">(</span> |
| <span class="n">window</span><span class="o">.</span><span class="n">FixedWindows</span><span class="p">(</span><span class="n">metadata</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'window_size_sec'</span><span class="p">)))</span> |
| <span class="o">|</span> <span class="s1">'query8_person_by_id'</span> <span class="o">>></span> <span class="n">beam</span><span class="o">.</span><span class="n">ParDo</span><span class="p">(</span><span class="n">nexmark_query_util</span><span class="o">.</span><span class="n">PersonByIdFn</span><span class="p">()))</span> |
| <span class="c1"># window auction and key by auctions' seller</span> |
| <span class="n">auctions_by_seller</span> <span class="o">=</span> <span class="p">(</span> |
| <span class="n">events</span> |
| <span class="o">|</span> <span class="n">nexmark_query_util</span><span class="o">.</span><span class="n">JustAuctions</span><span class="p">()</span> |
| <span class="o">|</span> <span class="s1">'query8_window_auction'</span> <span class="o">>></span> <span class="n">beam</span><span class="o">.</span><span class="n">WindowInto</span><span class="p">(</span> |
| <span class="n">window</span><span class="o">.</span><span class="n">FixedWindows</span><span class="p">(</span><span class="n">metadata</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'window_size_sec'</span><span class="p">)))</span> |
| <span class="o">|</span> <span class="s1">'query8_auction_by_seller'</span> <span class="o">>></span> <span class="n">beam</span><span class="o">.</span><span class="n">ParDo</span><span class="p">(</span> |
| <span class="n">nexmark_query_util</span><span class="o">.</span><span class="n">AuctionBySellerFn</span><span class="p">()))</span> |
| <span class="k">return</span> <span class="p">({</span> |
| <span class="n">nexmark_query_util</span><span class="o">.</span><span class="n">PERSON_TAG</span><span class="p">:</span> <span class="n">persons_by_id</span><span class="p">,</span> |
| <span class="n">nexmark_query_util</span><span class="o">.</span><span class="n">AUCTION_TAG</span><span class="p">:</span> <span class="n">auctions_by_seller</span> |
| <span class="p">}</span> |
| <span class="o">|</span> <span class="n">beam</span><span class="o">.</span><span class="n">CoGroupByKey</span><span class="p">()</span> |
| <span class="o">|</span> <span class="s1">'query8_join'</span> <span class="o">>></span> <span class="n">beam</span><span class="o">.</span><span class="n">ParDo</span><span class="p">(</span><span class="n">JoinPersonAuctionFn</span><span class="p">()))</span></div> |
| |
| |
| <div class="viewcode-block" id="JoinPersonAuctionFn"><a class="viewcode-back" href="../../../../../../apache_beam.testing.benchmarks.nexmark.queries.query8.html#apache_beam.testing.benchmarks.nexmark.queries.query8.JoinPersonAuctionFn">[docs]</a><span class="k">class</span> <span class="nc">JoinPersonAuctionFn</span><span class="p">(</span><span class="n">beam</span><span class="o">.</span><span class="n">DoFn</span><span class="p">):</span> |
| <div class="viewcode-block" id="JoinPersonAuctionFn.process"><a class="viewcode-back" href="../../../../../../apache_beam.testing.benchmarks.nexmark.queries.query8.html#apache_beam.testing.benchmarks.nexmark.queries.query8.JoinPersonAuctionFn.process">[docs]</a> <span class="k">def</span> <span class="nf">process</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">element</span><span class="p">):</span> |
| <span class="n">_</span><span class="p">,</span> <span class="n">group</span> <span class="o">=</span> <span class="n">element</span> |
| <span class="n">persons</span> <span class="o">=</span> <span class="n">group</span><span class="p">[</span><span class="n">nexmark_query_util</span><span class="o">.</span><span class="n">PERSON_TAG</span><span class="p">]</span> |
| <span class="n">person</span> <span class="o">=</span> <span class="n">persons</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="k">if</span> <span class="n">persons</span> <span class="k">else</span> <span class="kc">None</span> |
| <span class="k">if</span> <span class="n">person</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> |
| <span class="c1"># do nothing if this seller id is not a new person in this window</span> |
| <span class="k">return</span> |
| <span class="k">for</span> <span class="n">auction</span> <span class="ow">in</span> <span class="n">group</span><span class="p">[</span><span class="n">nexmark_query_util</span><span class="o">.</span><span class="n">AUCTION_TAG</span><span class="p">]:</span> |
| <span class="k">yield</span> <span class="p">{</span> |
| <span class="n">ResultNames</span><span class="o">.</span><span class="n">ID</span><span class="p">:</span> <span class="n">person</span><span class="o">.</span><span class="n">id</span><span class="p">,</span> |
| <span class="n">ResultNames</span><span class="o">.</span><span class="n">NAME</span><span class="p">:</span> <span class="n">person</span><span class="o">.</span><span class="n">name</span><span class="p">,</span> |
| <span class="n">ResultNames</span><span class="o">.</span><span class="n">RESERVE</span><span class="p">:</span> <span class="n">auction</span><span class="o">.</span><span class="n">reserve</span> |
| <span class="p">}</span></div></div> |
| </pre></div> |
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