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  <h1>Source code for grpc.framework.face.implementations</h1><div class="highlight"><pre>
<span></span><span class="c1"># Copyright 2015, Google Inc.</span>
<span class="c1"># All rights reserved.</span>
<span class="c1">#</span>
<span class="c1"># Redistribution and use in source and binary forms, with or without</span>
<span class="c1"># modification, are permitted provided that the following conditions are</span>
<span class="c1"># met:</span>
<span class="c1">#</span>
<span class="c1">#     * Redistributions of source code must retain the above copyright</span>
<span class="c1"># notice, this list of conditions and the following disclaimer.</span>
<span class="c1">#     * Redistributions in binary form must reproduce the above</span>
<span class="c1"># copyright notice, this list of conditions and the following disclaimer</span>
<span class="c1"># in the documentation and/or other materials provided with the</span>
<span class="c1"># distribution.</span>
<span class="c1">#     * Neither the name of Google Inc. nor the names of its</span>
<span class="c1"># contributors may be used to endorse or promote products derived from</span>
<span class="c1"># this software without specific prior written permission.</span>
<span class="c1">#</span>
<span class="c1"># THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS</span>
<span class="c1"># &quot;AS IS&quot; AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT</span>
<span class="c1"># LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR</span>
<span class="c1"># A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT</span>
<span class="c1"># OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,</span>
<span class="c1"># SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT</span>
<span class="c1"># LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,</span>
<span class="c1"># DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY</span>
<span class="c1"># THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT</span>
<span class="c1"># (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE</span>
<span class="c1"># OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.</span>

<span class="sd">&quot;&quot;&quot;Entry points into the Face layer of RPC Framework.&quot;&quot;&quot;</span>

<span class="kn">from</span> <span class="nn">grpc.framework.common</span> <span class="k">import</span> <span class="n">cardinality</span>
<span class="kn">from</span> <span class="nn">grpc.framework.common</span> <span class="k">import</span> <span class="n">style</span>
<span class="kn">from</span> <span class="nn">grpc.framework.base</span> <span class="k">import</span> <span class="n">exceptions</span> <span class="k">as</span> <span class="n">_base_exceptions</span>
<span class="kn">from</span> <span class="nn">grpc.framework.base</span> <span class="k">import</span> <span class="n">interfaces</span> <span class="k">as</span> <span class="n">base_interfaces</span>
<span class="kn">from</span> <span class="nn">grpc.framework.face</span> <span class="k">import</span> <span class="n">_calls</span>
<span class="kn">from</span> <span class="nn">grpc.framework.face</span> <span class="k">import</span> <span class="n">_service</span>
<span class="kn">from</span> <span class="nn">grpc.framework.face</span> <span class="k">import</span> <span class="n">exceptions</span>
<span class="kn">from</span> <span class="nn">grpc.framework.face</span> <span class="k">import</span> <span class="n">interfaces</span>


<span class="k">class</span> <span class="nc">_BaseServicer</span><span class="p">(</span><span class="n">base_interfaces</span><span class="o">.</span><span class="n">Servicer</span><span class="p">):</span>

  <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">methods</span><span class="p">,</span> <span class="n">multi_method</span><span class="p">):</span>
    <span class="bp">self</span><span class="o">.</span><span class="n">_methods</span> <span class="o">=</span> <span class="n">methods</span>
    <span class="bp">self</span><span class="o">.</span><span class="n">_multi_method</span> <span class="o">=</span> <span class="n">multi_method</span>

  <span class="k">def</span> <span class="nf">service</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">context</span><span class="p">,</span> <span class="n">output_consumer</span><span class="p">):</span>
    <span class="n">method</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_methods</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span>
    <span class="k">if</span> <span class="n">method</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
      <span class="k">return</span> <span class="n">method</span><span class="p">(</span><span class="n">output_consumer</span><span class="p">,</span> <span class="n">context</span><span class="p">)</span>
    <span class="k">elif</span> <span class="bp">self</span><span class="o">.</span><span class="n">_multi_method</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
      <span class="k">try</span><span class="p">:</span>
        <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_multi_method</span><span class="o">.</span><span class="n">service</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">output_consumer</span><span class="p">,</span> <span class="n">context</span><span class="p">)</span>
      <span class="k">except</span> <span class="n">exceptions</span><span class="o">.</span><span class="n">NoSuchMethodError</span><span class="p">:</span>
        <span class="k">raise</span> <span class="n">_base_exceptions</span><span class="o">.</span><span class="n">NoSuchMethodError</span><span class="p">()</span>
    <span class="k">else</span><span class="p">:</span>
      <span class="k">raise</span> <span class="n">_base_exceptions</span><span class="o">.</span><span class="n">NoSuchMethodError</span><span class="p">()</span>


<span class="k">class</span> <span class="nc">_UnaryUnaryMultiCallable</span><span class="p">(</span><span class="n">interfaces</span><span class="o">.</span><span class="n">UnaryUnaryMultiCallable</span><span class="p">):</span>

  <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">front</span><span class="p">,</span> <span class="n">name</span><span class="p">):</span>
    <span class="bp">self</span><span class="o">.</span><span class="n">_front</span> <span class="o">=</span> <span class="n">front</span>
    <span class="bp">self</span><span class="o">.</span><span class="n">_name</span> <span class="o">=</span> <span class="n">name</span>

  <span class="k">def</span> <span class="nf">__call__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">request</span><span class="p">,</span> <span class="n">timeout</span><span class="p">):</span>
    <span class="k">return</span> <span class="n">_calls</span><span class="o">.</span><span class="n">blocking_value_in_value_out</span><span class="p">(</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">_front</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">_name</span><span class="p">,</span> <span class="n">request</span><span class="p">,</span> <span class="n">timeout</span><span class="p">,</span> <span class="s1">&#39;unused trace ID&#39;</span><span class="p">)</span>

  <span class="k">def</span> <span class="nf">future</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">request</span><span class="p">,</span> <span class="n">timeout</span><span class="p">):</span>
    <span class="k">return</span> <span class="n">_calls</span><span class="o">.</span><span class="n">future_value_in_value_out</span><span class="p">(</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">_front</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">_name</span><span class="p">,</span> <span class="n">request</span><span class="p">,</span> <span class="n">timeout</span><span class="p">,</span> <span class="s1">&#39;unused trace ID&#39;</span><span class="p">)</span>

  <span class="k">def</span> <span class="nf">event</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">request</span><span class="p">,</span> <span class="n">response_callback</span><span class="p">,</span> <span class="n">abortion_callback</span><span class="p">,</span> <span class="n">timeout</span><span class="p">):</span>
    <span class="k">return</span> <span class="n">_calls</span><span class="o">.</span><span class="n">event_value_in_value_out</span><span class="p">(</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">_front</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">_name</span><span class="p">,</span> <span class="n">request</span><span class="p">,</span> <span class="n">response_callback</span><span class="p">,</span> <span class="n">abortion_callback</span><span class="p">,</span>
        <span class="n">timeout</span><span class="p">,</span> <span class="s1">&#39;unused trace ID&#39;</span><span class="p">)</span>


<span class="k">class</span> <span class="nc">_UnaryStreamMultiCallable</span><span class="p">(</span><span class="n">interfaces</span><span class="o">.</span><span class="n">UnaryStreamMultiCallable</span><span class="p">):</span>

  <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">front</span><span class="p">,</span> <span class="n">name</span><span class="p">):</span>
    <span class="bp">self</span><span class="o">.</span><span class="n">_front</span> <span class="o">=</span> <span class="n">front</span>
    <span class="bp">self</span><span class="o">.</span><span class="n">_name</span> <span class="o">=</span> <span class="n">name</span>

  <span class="k">def</span> <span class="nf">__call__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">request</span><span class="p">,</span> <span class="n">timeout</span><span class="p">):</span>
    <span class="k">return</span> <span class="n">_calls</span><span class="o">.</span><span class="n">inline_value_in_stream_out</span><span class="p">(</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">_front</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">_name</span><span class="p">,</span> <span class="n">request</span><span class="p">,</span> <span class="n">timeout</span><span class="p">,</span> <span class="s1">&#39;unused trace ID&#39;</span><span class="p">)</span>

  <span class="k">def</span> <span class="nf">event</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">request</span><span class="p">,</span> <span class="n">response_consumer</span><span class="p">,</span> <span class="n">abortion_callback</span><span class="p">,</span> <span class="n">timeout</span><span class="p">):</span>
    <span class="k">return</span> <span class="n">_calls</span><span class="o">.</span><span class="n">event_value_in_stream_out</span><span class="p">(</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">_front</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">_name</span><span class="p">,</span> <span class="n">request</span><span class="p">,</span> <span class="n">response_consumer</span><span class="p">,</span> <span class="n">abortion_callback</span><span class="p">,</span>
        <span class="n">timeout</span><span class="p">,</span> <span class="s1">&#39;unused trace ID&#39;</span><span class="p">)</span>


<span class="k">class</span> <span class="nc">_StreamUnaryMultiCallable</span><span class="p">(</span><span class="n">interfaces</span><span class="o">.</span><span class="n">StreamUnaryMultiCallable</span><span class="p">):</span>

  <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">front</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">pool</span><span class="p">):</span>
    <span class="bp">self</span><span class="o">.</span><span class="n">_front</span> <span class="o">=</span> <span class="n">front</span>
    <span class="bp">self</span><span class="o">.</span><span class="n">_name</span> <span class="o">=</span> <span class="n">name</span>
    <span class="bp">self</span><span class="o">.</span><span class="n">_pool</span> <span class="o">=</span> <span class="n">pool</span>

  <span class="k">def</span> <span class="nf">__call__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">request_iterator</span><span class="p">,</span> <span class="n">timeout</span><span class="p">):</span>
    <span class="k">return</span> <span class="n">_calls</span><span class="o">.</span><span class="n">blocking_stream_in_value_out</span><span class="p">(</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">_front</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">_name</span><span class="p">,</span> <span class="n">request_iterator</span><span class="p">,</span> <span class="n">timeout</span><span class="p">,</span> <span class="s1">&#39;unused trace ID&#39;</span><span class="p">)</span>

  <span class="k">def</span> <span class="nf">future</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">request_iterator</span><span class="p">,</span> <span class="n">timeout</span><span class="p">):</span>
    <span class="k">return</span> <span class="n">_calls</span><span class="o">.</span><span class="n">future_stream_in_value_out</span><span class="p">(</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">_front</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">_name</span><span class="p">,</span> <span class="n">request_iterator</span><span class="p">,</span> <span class="n">timeout</span><span class="p">,</span> <span class="s1">&#39;unused trace ID&#39;</span><span class="p">,</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">_pool</span><span class="p">)</span>

  <span class="k">def</span> <span class="nf">event</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">response_callback</span><span class="p">,</span> <span class="n">abortion_callback</span><span class="p">,</span> <span class="n">timeout</span><span class="p">):</span>
    <span class="k">return</span> <span class="n">_calls</span><span class="o">.</span><span class="n">event_stream_in_value_out</span><span class="p">(</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">_front</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">_name</span><span class="p">,</span> <span class="n">response_callback</span><span class="p">,</span> <span class="n">abortion_callback</span><span class="p">,</span> <span class="n">timeout</span><span class="p">,</span>
        <span class="s1">&#39;unused trace ID&#39;</span><span class="p">)</span>


<span class="k">class</span> <span class="nc">_StreamStreamMultiCallable</span><span class="p">(</span><span class="n">interfaces</span><span class="o">.</span><span class="n">StreamStreamMultiCallable</span><span class="p">):</span>

  <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">front</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">pool</span><span class="p">):</span>
    <span class="bp">self</span><span class="o">.</span><span class="n">_front</span> <span class="o">=</span> <span class="n">front</span>
    <span class="bp">self</span><span class="o">.</span><span class="n">_name</span> <span class="o">=</span> <span class="n">name</span>
    <span class="bp">self</span><span class="o">.</span><span class="n">_pool</span> <span class="o">=</span> <span class="n">pool</span>

  <span class="k">def</span> <span class="nf">__call__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">request_iterator</span><span class="p">,</span> <span class="n">timeout</span><span class="p">):</span>
    <span class="k">return</span> <span class="n">_calls</span><span class="o">.</span><span class="n">inline_stream_in_stream_out</span><span class="p">(</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">_front</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">_name</span><span class="p">,</span> <span class="n">request_iterator</span><span class="p">,</span> <span class="n">timeout</span><span class="p">,</span> <span class="s1">&#39;unused trace ID&#39;</span><span class="p">,</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">_pool</span><span class="p">)</span>

  <span class="k">def</span> <span class="nf">event</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">response_consumer</span><span class="p">,</span> <span class="n">abortion_callback</span><span class="p">,</span> <span class="n">timeout</span><span class="p">):</span>
    <span class="k">return</span> <span class="n">_calls</span><span class="o">.</span><span class="n">event_stream_in_stream_out</span><span class="p">(</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">_front</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">_name</span><span class="p">,</span> <span class="n">response_consumer</span><span class="p">,</span> <span class="n">abortion_callback</span><span class="p">,</span> <span class="n">timeout</span><span class="p">,</span>
        <span class="s1">&#39;unused trace ID&#39;</span><span class="p">)</span>


<span class="k">class</span> <span class="nc">_GenericStub</span><span class="p">(</span><span class="n">interfaces</span><span class="o">.</span><span class="n">GenericStub</span><span class="p">):</span>
  <span class="sd">&quot;&quot;&quot;An interfaces.GenericStub implementation.&quot;&quot;&quot;</span>

  <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">front</span><span class="p">,</span> <span class="n">pool</span><span class="p">):</span>
    <span class="bp">self</span><span class="o">.</span><span class="n">_front</span> <span class="o">=</span> <span class="n">front</span>
    <span class="bp">self</span><span class="o">.</span><span class="n">_pool</span> <span class="o">=</span> <span class="n">pool</span>

  <span class="k">def</span> <span class="nf">blocking_value_in_value_out</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">request</span><span class="p">,</span> <span class="n">timeout</span><span class="p">):</span>
    <span class="k">return</span> <span class="n">_calls</span><span class="o">.</span><span class="n">blocking_value_in_value_out</span><span class="p">(</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">_front</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">request</span><span class="p">,</span> <span class="n">timeout</span><span class="p">,</span> <span class="s1">&#39;unused trace ID&#39;</span><span class="p">)</span>

  <span class="k">def</span> <span class="nf">future_value_in_value_out</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">request</span><span class="p">,</span> <span class="n">timeout</span><span class="p">):</span>
    <span class="k">return</span> <span class="n">_calls</span><span class="o">.</span><span class="n">future_value_in_value_out</span><span class="p">(</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">_front</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">request</span><span class="p">,</span> <span class="n">timeout</span><span class="p">,</span> <span class="s1">&#39;unused trace ID&#39;</span><span class="p">)</span>

  <span class="k">def</span> <span class="nf">inline_value_in_stream_out</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">request</span><span class="p">,</span> <span class="n">timeout</span><span class="p">):</span>
    <span class="k">return</span> <span class="n">_calls</span><span class="o">.</span><span class="n">inline_value_in_stream_out</span><span class="p">(</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">_front</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">request</span><span class="p">,</span> <span class="n">timeout</span><span class="p">,</span> <span class="s1">&#39;unused trace ID&#39;</span><span class="p">)</span>

  <span class="k">def</span> <span class="nf">blocking_stream_in_value_out</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">request_iterator</span><span class="p">,</span> <span class="n">timeout</span><span class="p">):</span>
    <span class="k">return</span> <span class="n">_calls</span><span class="o">.</span><span class="n">blocking_stream_in_value_out</span><span class="p">(</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">_front</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">request_iterator</span><span class="p">,</span> <span class="n">timeout</span><span class="p">,</span> <span class="s1">&#39;unused trace ID&#39;</span><span class="p">)</span>

  <span class="k">def</span> <span class="nf">future_stream_in_value_out</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">request_iterator</span><span class="p">,</span> <span class="n">timeout</span><span class="p">):</span>
    <span class="k">return</span> <span class="n">_calls</span><span class="o">.</span><span class="n">future_stream_in_value_out</span><span class="p">(</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">_front</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">request_iterator</span><span class="p">,</span> <span class="n">timeout</span><span class="p">,</span> <span class="s1">&#39;unused trace ID&#39;</span><span class="p">,</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">_pool</span><span class="p">)</span>

  <span class="k">def</span> <span class="nf">inline_stream_in_stream_out</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">request_iterator</span><span class="p">,</span> <span class="n">timeout</span><span class="p">):</span>
    <span class="k">return</span> <span class="n">_calls</span><span class="o">.</span><span class="n">inline_stream_in_stream_out</span><span class="p">(</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">_front</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">request_iterator</span><span class="p">,</span> <span class="n">timeout</span><span class="p">,</span> <span class="s1">&#39;unused trace ID&#39;</span><span class="p">,</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">_pool</span><span class="p">)</span>

  <span class="k">def</span> <span class="nf">event_value_in_value_out</span><span class="p">(</span>
      <span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">request</span><span class="p">,</span> <span class="n">response_callback</span><span class="p">,</span> <span class="n">abortion_callback</span><span class="p">,</span> <span class="n">timeout</span><span class="p">):</span>
    <span class="k">return</span> <span class="n">_calls</span><span class="o">.</span><span class="n">event_value_in_value_out</span><span class="p">(</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">_front</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">request</span><span class="p">,</span> <span class="n">response_callback</span><span class="p">,</span> <span class="n">abortion_callback</span><span class="p">,</span>
        <span class="n">timeout</span><span class="p">,</span> <span class="s1">&#39;unused trace ID&#39;</span><span class="p">)</span>

  <span class="k">def</span> <span class="nf">event_value_in_stream_out</span><span class="p">(</span>
      <span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">request</span><span class="p">,</span> <span class="n">response_consumer</span><span class="p">,</span> <span class="n">abortion_callback</span><span class="p">,</span> <span class="n">timeout</span><span class="p">):</span>
    <span class="k">return</span> <span class="n">_calls</span><span class="o">.</span><span class="n">event_value_in_stream_out</span><span class="p">(</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">_front</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">request</span><span class="p">,</span> <span class="n">response_consumer</span><span class="p">,</span> <span class="n">abortion_callback</span><span class="p">,</span>
        <span class="n">timeout</span><span class="p">,</span> <span class="s1">&#39;unused trace ID&#39;</span><span class="p">)</span>

  <span class="k">def</span> <span class="nf">event_stream_in_value_out</span><span class="p">(</span>
      <span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">response_callback</span><span class="p">,</span> <span class="n">abortion_callback</span><span class="p">,</span> <span class="n">timeout</span><span class="p">):</span>
    <span class="k">return</span> <span class="n">_calls</span><span class="o">.</span><span class="n">event_stream_in_value_out</span><span class="p">(</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">_front</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">response_callback</span><span class="p">,</span> <span class="n">abortion_callback</span><span class="p">,</span> <span class="n">timeout</span><span class="p">,</span>
        <span class="s1">&#39;unused trace ID&#39;</span><span class="p">)</span>

  <span class="k">def</span> <span class="nf">event_stream_in_stream_out</span><span class="p">(</span>
      <span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">response_consumer</span><span class="p">,</span> <span class="n">abortion_callback</span><span class="p">,</span> <span class="n">timeout</span><span class="p">):</span>
    <span class="k">return</span> <span class="n">_calls</span><span class="o">.</span><span class="n">event_stream_in_stream_out</span><span class="p">(</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">_front</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">response_consumer</span><span class="p">,</span> <span class="n">abortion_callback</span><span class="p">,</span> <span class="n">timeout</span><span class="p">,</span>
        <span class="s1">&#39;unused trace ID&#39;</span><span class="p">)</span>

  <span class="k">def</span> <span class="nf">unary_unary_multi_callable</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">):</span>
    <span class="k">return</span> <span class="n">_UnaryUnaryMultiCallable</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_front</span><span class="p">,</span> <span class="n">name</span><span class="p">)</span>

  <span class="k">def</span> <span class="nf">unary_stream_multi_callable</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">):</span>
    <span class="k">return</span> <span class="n">_UnaryStreamMultiCallable</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_front</span><span class="p">,</span> <span class="n">name</span><span class="p">)</span>

  <span class="k">def</span> <span class="nf">stream_unary_multi_callable</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">):</span>
    <span class="k">return</span> <span class="n">_StreamUnaryMultiCallable</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_front</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">_pool</span><span class="p">)</span>

  <span class="k">def</span> <span class="nf">stream_stream_multi_callable</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">):</span>
    <span class="k">return</span> <span class="n">_StreamStreamMultiCallable</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_front</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">_pool</span><span class="p">)</span>


<span class="k">class</span> <span class="nc">_DynamicStub</span><span class="p">(</span><span class="n">interfaces</span><span class="o">.</span><span class="n">DynamicStub</span><span class="p">):</span>
  <span class="sd">&quot;&quot;&quot;An interfaces.DynamicStub implementation.&quot;&quot;&quot;</span>

  <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">cardinalities</span><span class="p">,</span> <span class="n">front</span><span class="p">,</span> <span class="n">pool</span><span class="p">):</span>
    <span class="bp">self</span><span class="o">.</span><span class="n">_cardinalities</span> <span class="o">=</span> <span class="n">cardinalities</span>
    <span class="bp">self</span><span class="o">.</span><span class="n">_front</span> <span class="o">=</span> <span class="n">front</span>
    <span class="bp">self</span><span class="o">.</span><span class="n">_pool</span> <span class="o">=</span> <span class="n">pool</span>

  <span class="k">def</span> <span class="nf">__getattr__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">attr</span><span class="p">):</span>
    <span class="n">method_cardinality</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_cardinalities</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">attr</span><span class="p">)</span>
    <span class="k">if</span> <span class="n">method_cardinality</span> <span class="ow">is</span> <span class="n">cardinality</span><span class="o">.</span><span class="n">Cardinality</span><span class="o">.</span><span class="n">UNARY_UNARY</span><span class="p">:</span>
      <span class="k">return</span> <span class="n">_UnaryUnaryMultiCallable</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_front</span><span class="p">,</span> <span class="n">attr</span><span class="p">)</span>
    <span class="k">elif</span> <span class="n">method_cardinality</span> <span class="ow">is</span> <span class="n">cardinality</span><span class="o">.</span><span class="n">Cardinality</span><span class="o">.</span><span class="n">UNARY_STREAM</span><span class="p">:</span>
      <span class="k">return</span> <span class="n">_UnaryStreamMultiCallable</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_front</span><span class="p">,</span> <span class="n">attr</span><span class="p">)</span>
    <span class="k">elif</span> <span class="n">method_cardinality</span> <span class="ow">is</span> <span class="n">cardinality</span><span class="o">.</span><span class="n">Cardinality</span><span class="o">.</span><span class="n">STREAM_UNARY</span><span class="p">:</span>
      <span class="k">return</span> <span class="n">_StreamUnaryMultiCallable</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_front</span><span class="p">,</span> <span class="n">attr</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">_pool</span><span class="p">)</span>
    <span class="k">elif</span> <span class="n">method_cardinality</span> <span class="ow">is</span> <span class="n">cardinality</span><span class="o">.</span><span class="n">Cardinality</span><span class="o">.</span><span class="n">STREAM_STREAM</span><span class="p">:</span>
      <span class="k">return</span> <span class="n">_StreamStreamMultiCallable</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_front</span><span class="p">,</span> <span class="n">attr</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">_pool</span><span class="p">)</span>
    <span class="k">else</span><span class="p">:</span>
      <span class="k">raise</span> <span class="ne">AttributeError</span><span class="p">(</span><span class="s1">&#39;_DynamicStub object has no attribute &quot;</span><span class="si">%s</span><span class="s1">&quot;!&#39;</span> <span class="o">%</span> <span class="n">attr</span><span class="p">)</span>


<span class="k">def</span> <span class="nf">_adapt_method_implementations</span><span class="p">(</span><span class="n">method_implementations</span><span class="p">,</span> <span class="n">pool</span><span class="p">):</span>
  <span class="n">adapted_implementations</span> <span class="o">=</span> <span class="p">{}</span>
  <span class="k">for</span> <span class="n">name</span><span class="p">,</span> <span class="n">method_implementation</span> <span class="ow">in</span> <span class="n">method_implementations</span><span class="o">.</span><span class="n">iteritems</span><span class="p">():</span>
    <span class="k">if</span> <span class="n">method_implementation</span><span class="o">.</span><span class="n">style</span> <span class="ow">is</span> <span class="n">style</span><span class="o">.</span><span class="n">Service</span><span class="o">.</span><span class="n">INLINE</span><span class="p">:</span>
      <span class="k">if</span> <span class="n">method_implementation</span><span class="o">.</span><span class="n">cardinality</span> <span class="ow">is</span> <span class="n">cardinality</span><span class="o">.</span><span class="n">Cardinality</span><span class="o">.</span><span class="n">UNARY_UNARY</span><span class="p">:</span>
        <span class="n">adapted_implementations</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> <span class="o">=</span> <span class="n">_service</span><span class="o">.</span><span class="n">adapt_inline_value_in_value_out</span><span class="p">(</span>
            <span class="n">method_implementation</span><span class="o">.</span><span class="n">unary_unary_inline</span><span class="p">)</span>
      <span class="k">elif</span> <span class="n">method_implementation</span><span class="o">.</span><span class="n">cardinality</span> <span class="ow">is</span> <span class="n">cardinality</span><span class="o">.</span><span class="n">Cardinality</span><span class="o">.</span><span class="n">UNARY_STREAM</span><span class="p">:</span>
        <span class="n">adapted_implementations</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> <span class="o">=</span> <span class="n">_service</span><span class="o">.</span><span class="n">adapt_inline_value_in_stream_out</span><span class="p">(</span>
            <span class="n">method_implementation</span><span class="o">.</span><span class="n">unary_stream_inline</span><span class="p">)</span>
      <span class="k">elif</span> <span class="n">method_implementation</span><span class="o">.</span><span class="n">cardinality</span> <span class="ow">is</span> <span class="n">cardinality</span><span class="o">.</span><span class="n">Cardinality</span><span class="o">.</span><span class="n">STREAM_UNARY</span><span class="p">:</span>
        <span class="n">adapted_implementations</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> <span class="o">=</span> <span class="n">_service</span><span class="o">.</span><span class="n">adapt_inline_stream_in_value_out</span><span class="p">(</span>
            <span class="n">method_implementation</span><span class="o">.</span><span class="n">stream_unary_inline</span><span class="p">,</span> <span class="n">pool</span><span class="p">)</span>
      <span class="k">elif</span> <span class="n">method_implementation</span><span class="o">.</span><span class="n">cardinality</span> <span class="ow">is</span> <span class="n">cardinality</span><span class="o">.</span><span class="n">Cardinality</span><span class="o">.</span><span class="n">STREAM_STREAM</span><span class="p">:</span>
        <span class="n">adapted_implementations</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> <span class="o">=</span> <span class="n">_service</span><span class="o">.</span><span class="n">adapt_inline_stream_in_stream_out</span><span class="p">(</span>
            <span class="n">method_implementation</span><span class="o">.</span><span class="n">stream_stream_inline</span><span class="p">,</span> <span class="n">pool</span><span class="p">)</span>
    <span class="k">elif</span> <span class="n">method_implementation</span><span class="o">.</span><span class="n">style</span> <span class="ow">is</span> <span class="n">style</span><span class="o">.</span><span class="n">Service</span><span class="o">.</span><span class="n">EVENT</span><span class="p">:</span>
      <span class="k">if</span> <span class="n">method_implementation</span><span class="o">.</span><span class="n">cardinality</span> <span class="ow">is</span> <span class="n">cardinality</span><span class="o">.</span><span class="n">Cardinality</span><span class="o">.</span><span class="n">UNARY_UNARY</span><span class="p">:</span>
        <span class="n">adapted_implementations</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> <span class="o">=</span> <span class="n">_service</span><span class="o">.</span><span class="n">adapt_event_value_in_value_out</span><span class="p">(</span>
            <span class="n">method_implementation</span><span class="o">.</span><span class="n">unary_unary_event</span><span class="p">)</span>
      <span class="k">elif</span> <span class="n">method_implementation</span><span class="o">.</span><span class="n">cardinality</span> <span class="ow">is</span> <span class="n">cardinality</span><span class="o">.</span><span class="n">Cardinality</span><span class="o">.</span><span class="n">UNARY_STREAM</span><span class="p">:</span>
        <span class="n">adapted_implementations</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> <span class="o">=</span> <span class="n">_service</span><span class="o">.</span><span class="n">adapt_event_value_in_stream_out</span><span class="p">(</span>
            <span class="n">method_implementation</span><span class="o">.</span><span class="n">unary_stream_event</span><span class="p">)</span>
      <span class="k">elif</span> <span class="n">method_implementation</span><span class="o">.</span><span class="n">cardinality</span> <span class="ow">is</span> <span class="n">cardinality</span><span class="o">.</span><span class="n">Cardinality</span><span class="o">.</span><span class="n">STREAM_UNARY</span><span class="p">:</span>
        <span class="n">adapted_implementations</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> <span class="o">=</span> <span class="n">_service</span><span class="o">.</span><span class="n">adapt_event_stream_in_value_out</span><span class="p">(</span>
            <span class="n">method_implementation</span><span class="o">.</span><span class="n">stream_unary_event</span><span class="p">)</span>
      <span class="k">elif</span> <span class="n">method_implementation</span><span class="o">.</span><span class="n">cardinality</span> <span class="ow">is</span> <span class="n">cardinality</span><span class="o">.</span><span class="n">Cardinality</span><span class="o">.</span><span class="n">STREAM_STREAM</span><span class="p">:</span>
        <span class="n">adapted_implementations</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> <span class="o">=</span> <span class="n">_service</span><span class="o">.</span><span class="n">adapt_event_stream_in_stream_out</span><span class="p">(</span>
            <span class="n">method_implementation</span><span class="o">.</span><span class="n">stream_stream_event</span><span class="p">)</span>
  <span class="k">return</span> <span class="n">adapted_implementations</span>


<div class="viewcode-block" id="servicer"><a class="viewcode-back" href="../../../../grpc.framework.face.html#grpc.framework.face.implementations.servicer">[docs]</a><span class="k">def</span> <span class="nf">servicer</span><span class="p">(</span><span class="n">pool</span><span class="p">,</span> <span class="n">method_implementations</span><span class="p">,</span> <span class="n">multi_method_implementation</span><span class="p">):</span>
  <span class="sd">&quot;&quot;&quot;Creates a base_interfaces.Servicer.</span>

<span class="sd">  It is guaranteed that any passed interfaces.MultiMethodImplementation will</span>
<span class="sd">  only be called to service an RPC if there is no</span>
<span class="sd">  interfaces.MethodImplementation for the RPC method in the passed</span>
<span class="sd">  method_implementations dictionary.</span>

<span class="sd">  Args:</span>
<span class="sd">    pool: A thread pool.</span>
<span class="sd">    method_implementations: A dictionary from RPC method name to</span>
<span class="sd">      interfaces.MethodImplementation object to be used to service the named</span>
<span class="sd">      RPC method.</span>
<span class="sd">    multi_method_implementation: An interfaces.MultiMethodImplementation to be</span>
<span class="sd">      used to service any RPCs not serviced by the</span>
<span class="sd">      interfaces.MethodImplementations given in the method_implementations</span>
<span class="sd">      dictionary, or None.</span>

<span class="sd">  Returns:</span>
<span class="sd">    A base_interfaces.Servicer that services RPCs via the given implementations.</span>
<span class="sd">  &quot;&quot;&quot;</span>
  <span class="n">adapted_implementations</span> <span class="o">=</span> <span class="n">_adapt_method_implementations</span><span class="p">(</span>
      <span class="n">method_implementations</span><span class="p">,</span> <span class="n">pool</span><span class="p">)</span>
  <span class="k">return</span> <span class="n">_BaseServicer</span><span class="p">(</span><span class="n">adapted_implementations</span><span class="p">,</span> <span class="n">multi_method_implementation</span><span class="p">)</span></div>


<div class="viewcode-block" id="generic_stub"><a class="viewcode-back" href="../../../../grpc.framework.face.html#grpc.framework.face.implementations.generic_stub">[docs]</a><span class="k">def</span> <span class="nf">generic_stub</span><span class="p">(</span><span class="n">front</span><span class="p">,</span> <span class="n">pool</span><span class="p">):</span>
  <span class="sd">&quot;&quot;&quot;Creates an interfaces.GenericStub.</span>

<span class="sd">  Args:</span>
<span class="sd">    front: A base_interfaces.Front.</span>
<span class="sd">    pool: A futures.ThreadPoolExecutor.</span>

<span class="sd">  Returns:</span>
<span class="sd">    An interfaces.GenericStub that performs RPCs via the given</span>
<span class="sd">      base_interfaces.Front.</span>
<span class="sd">  &quot;&quot;&quot;</span>
  <span class="k">return</span> <span class="n">_GenericStub</span><span class="p">(</span><span class="n">front</span><span class="p">,</span> <span class="n">pool</span><span class="p">)</span></div>


<div class="viewcode-block" id="dynamic_stub"><a class="viewcode-back" href="../../../../grpc.framework.face.html#grpc.framework.face.implementations.dynamic_stub">[docs]</a><span class="k">def</span> <span class="nf">dynamic_stub</span><span class="p">(</span><span class="n">cardinalities</span><span class="p">,</span> <span class="n">front</span><span class="p">,</span> <span class="n">pool</span><span class="p">,</span> <span class="n">prefix</span><span class="p">):</span>
  <span class="sd">&quot;&quot;&quot;Creates an interfaces.DynamicStub.</span>

<span class="sd">  Args:</span>
<span class="sd">    cardinalities: A dict from RPC method name to cardinality.Cardinality</span>
<span class="sd">      value identifying the cardinality of every RPC method to be supported by</span>
<span class="sd">      the created interfaces.DynamicStub.</span>
<span class="sd">    front: A base_interfaces.Front.</span>
<span class="sd">    pool: A futures.ThreadPoolExecutor.</span>
<span class="sd">    prefix: A string to prepend when mapping requested attribute name to RPC</span>
<span class="sd">      method name during attribute access on the created</span>
<span class="sd">      interfaces.DynamicStub.</span>

<span class="sd">  Returns:</span>
<span class="sd">    An interfaces.DynamicStub that performs RPCs via the given</span>
<span class="sd">      base_interfaces.Front.</span>
<span class="sd">  &quot;&quot;&quot;</span>
  <span class="k">return</span> <span class="n">_DynamicStub</span><span class="p">(</span><span class="n">cardinalities</span><span class="p">,</span> <span class="n">front</span><span class="p">,</span> <span class="n">pool</span><span class="p">)</span></div>
</pre></div>

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