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  <h1>Source code for grpc.framework.interfaces.face.utilities</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;Utilities for RPC Framework&#39;s Face interface.&quot;&quot;&quot;</span>

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

<span class="c1"># stream is referenced from specification in this module.</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.foundation</span> <span class="k">import</span> <span class="n">stream</span>  <span class="c1"># pylint: disable=unused-import</span>
<span class="kn">from</span> <span class="nn">grpc.framework.interfaces.face</span> <span class="k">import</span> <span class="n">face</span>


<span class="k">class</span> <span class="nc">_MethodImplementation</span><span class="p">(</span>
    <span class="n">face</span><span class="o">.</span><span class="n">MethodImplementation</span><span class="p">,</span>
    <span class="n">collections</span><span class="o">.</span><span class="n">namedtuple</span><span class="p">(</span>
        <span class="s1">&#39;_MethodImplementation&#39;</span><span class="p">,</span>
        <span class="p">[</span><span class="s1">&#39;cardinality&#39;</span><span class="p">,</span> <span class="s1">&#39;style&#39;</span><span class="p">,</span> <span class="s1">&#39;unary_unary_inline&#39;</span><span class="p">,</span> <span class="s1">&#39;unary_stream_inline&#39;</span><span class="p">,</span>
         <span class="s1">&#39;stream_unary_inline&#39;</span><span class="p">,</span> <span class="s1">&#39;stream_stream_inline&#39;</span><span class="p">,</span> <span class="s1">&#39;unary_unary_event&#39;</span><span class="p">,</span>
         <span class="s1">&#39;unary_stream_event&#39;</span><span class="p">,</span> <span class="s1">&#39;stream_unary_event&#39;</span><span class="p">,</span> <span class="s1">&#39;stream_stream_event&#39;</span><span class="p">,])):</span>
  <span class="k">pass</span>


<div class="viewcode-block" id="unary_unary_inline"><a class="viewcode-back" href="../../../../../grpc.framework.interfaces.face.html#grpc.framework.interfaces.face.utilities.unary_unary_inline">[docs]</a><span class="k">def</span> <span class="nf">unary_unary_inline</span><span class="p">(</span><span class="n">behavior</span><span class="p">):</span>
  <span class="sd">&quot;&quot;&quot;Creates an face.MethodImplementation for the given behavior.</span>

<span class="sd">  Args:</span>
<span class="sd">    behavior: The implementation of a unary-unary RPC method as a callable value</span>
<span class="sd">      that takes a request value and an face.ServicerContext object and</span>
<span class="sd">      returns a response value.</span>

<span class="sd">  Returns:</span>
<span class="sd">    An face.MethodImplementation derived from the given behavior.</span>
<span class="sd">  &quot;&quot;&quot;</span>
  <span class="k">return</span> <span class="n">_MethodImplementation</span><span class="p">(</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">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="n">behavior</span><span class="p">,</span>
      <span class="kc">None</span><span class="p">,</span> <span class="kc">None</span><span class="p">,</span> <span class="kc">None</span><span class="p">,</span> <span class="kc">None</span><span class="p">,</span> <span class="kc">None</span><span class="p">,</span> <span class="kc">None</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span></div>


<div class="viewcode-block" id="unary_stream_inline"><a class="viewcode-back" href="../../../../../grpc.framework.interfaces.face.html#grpc.framework.interfaces.face.utilities.unary_stream_inline">[docs]</a><span class="k">def</span> <span class="nf">unary_stream_inline</span><span class="p">(</span><span class="n">behavior</span><span class="p">):</span>
  <span class="sd">&quot;&quot;&quot;Creates an face.MethodImplementation for the given behavior.</span>

<span class="sd">  Args:</span>
<span class="sd">    behavior: The implementation of a unary-stream RPC method as a callable</span>
<span class="sd">      value that takes a request value and an face.ServicerContext object and</span>
<span class="sd">      returns an iterator of response values.</span>

<span class="sd">  Returns:</span>
<span class="sd">    An face.MethodImplementation derived from the given behavior.</span>
<span class="sd">  &quot;&quot;&quot;</span>
  <span class="k">return</span> <span class="n">_MethodImplementation</span><span class="p">(</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">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="kc">None</span><span class="p">,</span>
      <span class="n">behavior</span><span class="p">,</span> <span class="kc">None</span><span class="p">,</span> <span class="kc">None</span><span class="p">,</span> <span class="kc">None</span><span class="p">,</span> <span class="kc">None</span><span class="p">,</span> <span class="kc">None</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span></div>


<div class="viewcode-block" id="stream_unary_inline"><a class="viewcode-back" href="../../../../../grpc.framework.interfaces.face.html#grpc.framework.interfaces.face.utilities.stream_unary_inline">[docs]</a><span class="k">def</span> <span class="nf">stream_unary_inline</span><span class="p">(</span><span class="n">behavior</span><span class="p">):</span>
  <span class="sd">&quot;&quot;&quot;Creates an face.MethodImplementation for the given behavior.</span>

<span class="sd">  Args:</span>
<span class="sd">    behavior: The implementation of a stream-unary RPC method as a callable</span>
<span class="sd">      value that takes an iterator of request values and an</span>
<span class="sd">      face.ServicerContext object and returns a response value.</span>

<span class="sd">  Returns:</span>
<span class="sd">    An face.MethodImplementation derived from the given behavior.</span>
<span class="sd">  &quot;&quot;&quot;</span>
  <span class="k">return</span> <span class="n">_MethodImplementation</span><span class="p">(</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">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="kc">None</span><span class="p">,</span> <span class="kc">None</span><span class="p">,</span>
      <span class="n">behavior</span><span class="p">,</span> <span class="kc">None</span><span class="p">,</span> <span class="kc">None</span><span class="p">,</span> <span class="kc">None</span><span class="p">,</span> <span class="kc">None</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span></div>


<div class="viewcode-block" id="stream_stream_inline"><a class="viewcode-back" href="../../../../../grpc.framework.interfaces.face.html#grpc.framework.interfaces.face.utilities.stream_stream_inline">[docs]</a><span class="k">def</span> <span class="nf">stream_stream_inline</span><span class="p">(</span><span class="n">behavior</span><span class="p">):</span>
  <span class="sd">&quot;&quot;&quot;Creates an face.MethodImplementation for the given behavior.</span>

<span class="sd">  Args:</span>
<span class="sd">    behavior: The implementation of a stream-stream RPC method as a callable</span>
<span class="sd">      value that takes an iterator of request values and an</span>
<span class="sd">      face.ServicerContext object and returns an iterator of response values.</span>

<span class="sd">  Returns:</span>
<span class="sd">    An face.MethodImplementation derived from the given behavior.</span>
<span class="sd">  &quot;&quot;&quot;</span>
  <span class="k">return</span> <span class="n">_MethodImplementation</span><span class="p">(</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">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="kc">None</span><span class="p">,</span> <span class="kc">None</span><span class="p">,</span>
      <span class="kc">None</span><span class="p">,</span> <span class="n">behavior</span><span class="p">,</span> <span class="kc">None</span><span class="p">,</span> <span class="kc">None</span><span class="p">,</span> <span class="kc">None</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span></div>


<div class="viewcode-block" id="unary_unary_event"><a class="viewcode-back" href="../../../../../grpc.framework.interfaces.face.html#grpc.framework.interfaces.face.utilities.unary_unary_event">[docs]</a><span class="k">def</span> <span class="nf">unary_unary_event</span><span class="p">(</span><span class="n">behavior</span><span class="p">):</span>
  <span class="sd">&quot;&quot;&quot;Creates an face.MethodImplementation for the given behavior.</span>

<span class="sd">  Args:</span>
<span class="sd">    behavior: The implementation of a unary-unary RPC method as a callable</span>
<span class="sd">      value that takes a request value, a response callback to which to pass</span>
<span class="sd">      the response value of the RPC, and an face.ServicerContext.</span>

<span class="sd">  Returns:</span>
<span class="sd">    An face.MethodImplementation derived from the given behavior.</span>
<span class="sd">  &quot;&quot;&quot;</span>
  <span class="k">return</span> <span class="n">_MethodImplementation</span><span class="p">(</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">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="kc">None</span><span class="p">,</span> <span class="kc">None</span><span class="p">,</span>
      <span class="kc">None</span><span class="p">,</span> <span class="kc">None</span><span class="p">,</span> <span class="n">behavior</span><span class="p">,</span> <span class="kc">None</span><span class="p">,</span> <span class="kc">None</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span></div>


<div class="viewcode-block" id="unary_stream_event"><a class="viewcode-back" href="../../../../../grpc.framework.interfaces.face.html#grpc.framework.interfaces.face.utilities.unary_stream_event">[docs]</a><span class="k">def</span> <span class="nf">unary_stream_event</span><span class="p">(</span><span class="n">behavior</span><span class="p">):</span>
  <span class="sd">&quot;&quot;&quot;Creates an face.MethodImplementation for the given behavior.</span>

<span class="sd">  Args:</span>
<span class="sd">    behavior: The implementation of a unary-stream RPC method as a callable</span>
<span class="sd">      value that takes a request value, a stream.Consumer to which to pass the</span>
<span class="sd">      the response values of the RPC, and an face.ServicerContext.</span>

<span class="sd">  Returns:</span>
<span class="sd">    An face.MethodImplementation derived from the given behavior.</span>
<span class="sd">  &quot;&quot;&quot;</span>
  <span class="k">return</span> <span class="n">_MethodImplementation</span><span class="p">(</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">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="kc">None</span><span class="p">,</span> <span class="kc">None</span><span class="p">,</span>
      <span class="kc">None</span><span class="p">,</span> <span class="kc">None</span><span class="p">,</span> <span class="kc">None</span><span class="p">,</span> <span class="n">behavior</span><span class="p">,</span> <span class="kc">None</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span></div>


<div class="viewcode-block" id="stream_unary_event"><a class="viewcode-back" href="../../../../../grpc.framework.interfaces.face.html#grpc.framework.interfaces.face.utilities.stream_unary_event">[docs]</a><span class="k">def</span> <span class="nf">stream_unary_event</span><span class="p">(</span><span class="n">behavior</span><span class="p">):</span>
  <span class="sd">&quot;&quot;&quot;Creates an face.MethodImplementation for the given behavior.</span>

<span class="sd">  Args:</span>
<span class="sd">    behavior: The implementation of a stream-unary RPC method as a callable</span>
<span class="sd">      value that takes a response callback to which to pass the response value</span>
<span class="sd">      of the RPC and an face.ServicerContext and returns a stream.Consumer to</span>
<span class="sd">      which the request values of the RPC should be passed.</span>

<span class="sd">  Returns:</span>
<span class="sd">    An face.MethodImplementation derived from the given behavior.</span>
<span class="sd">  &quot;&quot;&quot;</span>
  <span class="k">return</span> <span class="n">_MethodImplementation</span><span class="p">(</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">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="kc">None</span><span class="p">,</span> <span class="kc">None</span><span class="p">,</span>
      <span class="kc">None</span><span class="p">,</span> <span class="kc">None</span><span class="p">,</span> <span class="kc">None</span><span class="p">,</span> <span class="kc">None</span><span class="p">,</span> <span class="n">behavior</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span></div>


<div class="viewcode-block" id="stream_stream_event"><a class="viewcode-back" href="../../../../../grpc.framework.interfaces.face.html#grpc.framework.interfaces.face.utilities.stream_stream_event">[docs]</a><span class="k">def</span> <span class="nf">stream_stream_event</span><span class="p">(</span><span class="n">behavior</span><span class="p">):</span>
  <span class="sd">&quot;&quot;&quot;Creates an face.MethodImplementation for the given behavior.</span>

<span class="sd">  Args:</span>
<span class="sd">    behavior: The implementation of a stream-stream RPC method as a callable</span>
<span class="sd">      value that takes a stream.Consumer to which to pass the response values</span>
<span class="sd">      of the RPC and an face.ServicerContext and returns a stream.Consumer to</span>
<span class="sd">      which the request values of the RPC should be passed.</span>

<span class="sd">  Returns:</span>
<span class="sd">    An face.MethodImplementation derived from the given behavior.</span>
<span class="sd">  &quot;&quot;&quot;</span>
  <span class="k">return</span> <span class="n">_MethodImplementation</span><span class="p">(</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">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="kc">None</span><span class="p">,</span> <span class="kc">None</span><span class="p">,</span>
      <span class="kc">None</span><span class="p">,</span> <span class="kc">None</span><span class="p">,</span> <span class="kc">None</span><span class="p">,</span> <span class="kc">None</span><span class="p">,</span> <span class="kc">None</span><span class="p">,</span> <span class="n">behavior</span><span class="p">)</span></div>
</pre></div>

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