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  <h1>Source code for grpc.framework.foundation.stream</h1><div class="highlight"><pre>
<span class="c"># Copyright 2015, Google Inc.</span>
<span class="c"># All rights reserved.</span>
<span class="c">#</span>
<span class="c"># Redistribution and use in source and binary forms, with or without</span>
<span class="c"># modification, are permitted provided that the following conditions are</span>
<span class="c"># met:</span>
<span class="c">#</span>
<span class="c">#     * Redistributions of source code must retain the above copyright</span>
<span class="c"># notice, this list of conditions and the following disclaimer.</span>
<span class="c">#     * Redistributions in binary form must reproduce the above</span>
<span class="c"># copyright notice, this list of conditions and the following disclaimer</span>
<span class="c"># in the documentation and/or other materials provided with the</span>
<span class="c"># distribution.</span>
<span class="c">#     * Neither the name of Google Inc. nor the names of its</span>
<span class="c"># contributors may be used to endorse or promote products derived from</span>
<span class="c"># this software without specific prior written permission.</span>
<span class="c">#</span>
<span class="c"># THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS</span>
<span class="c"># &quot;AS IS&quot; AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT</span>
<span class="c"># LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR</span>
<span class="c"># A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT</span>
<span class="c"># OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,</span>
<span class="c"># SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT</span>
<span class="c"># LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,</span>
<span class="c"># DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY</span>
<span class="c"># THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT</span>
<span class="c"># (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE</span>
<span class="c"># OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.</span>

<span class="sd">&quot;&quot;&quot;Interfaces related to streams of values or objects.&quot;&quot;&quot;</span>

<span class="kn">import</span> <span class="nn">abc</span>


<div class="viewcode-block" id="Consumer"><a class="viewcode-back" href="../../../../grpc.framework.foundation.html#grpc.framework.foundation.stream.Consumer">[docs]</a><span class="k">class</span> <span class="nc">Consumer</span><span class="p">(</span><span class="nb">object</span><span class="p">):</span>
  <span class="sd">&quot;&quot;&quot;Interface for consumers of finite streams of values or objects.&quot;&quot;&quot;</span>
  <span class="n">__metaclass__</span> <span class="o">=</span> <span class="n">abc</span><span class="o">.</span><span class="n">ABCMeta</span>

  <span class="nd">@abc.abstractmethod</span>
<div class="viewcode-block" id="Consumer.consume"><a class="viewcode-back" href="../../../../grpc.framework.foundation.html#grpc.framework.foundation.stream.Consumer.consume">[docs]</a>  <span class="k">def</span> <span class="nf">consume</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">value</span><span class="p">):</span>
    <span class="sd">&quot;&quot;&quot;Accepts a value.</span>

<span class="sd">    Args:</span>
<span class="sd">      value: Any value accepted by this Consumer.</span>
<span class="sd">    &quot;&quot;&quot;</span>
    <span class="k">raise</span> <span class="ne">NotImplementedError</span><span class="p">()</span>
</div>
  <span class="nd">@abc.abstractmethod</span>
<div class="viewcode-block" id="Consumer.terminate"><a class="viewcode-back" href="../../../../grpc.framework.foundation.html#grpc.framework.foundation.stream.Consumer.terminate">[docs]</a>  <span class="k">def</span> <span class="nf">terminate</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
    <span class="sd">&quot;&quot;&quot;Indicates to this Consumer that no more values will be supplied.&quot;&quot;&quot;</span>
    <span class="k">raise</span> <span class="ne">NotImplementedError</span><span class="p">()</span>
</div>
  <span class="nd">@abc.abstractmethod</span>
<div class="viewcode-block" id="Consumer.consume_and_terminate"><a class="viewcode-back" href="../../../../grpc.framework.foundation.html#grpc.framework.foundation.stream.Consumer.consume_and_terminate">[docs]</a>  <span class="k">def</span> <span class="nf">consume_and_terminate</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">value</span><span class="p">):</span>
    <span class="sd">&quot;&quot;&quot;Supplies a value and signals that no more values will be supplied.</span>

<span class="sd">    Args:</span>
<span class="sd">      value: Any value accepted by this Consumer.</span>
<span class="sd">    &quot;&quot;&quot;</span>
    <span class="k">raise</span> <span class="ne">NotImplementedError</span><span class="p">()</span></div></div>
</pre></div>

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