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  <h1>Source code for grpc_health.v1.health</h1><div class="highlight"><pre>
<span></span><span class="c1"># Copyright 2015 gRPC authors.</span>
<span class="c1">#</span>
<span class="c1"># Licensed under the Apache License, Version 2.0 (the &quot;License&quot;);</span>
<span class="c1"># you may not use this file except in compliance with the License.</span>
<span class="c1"># 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 &quot;AS IS&quot; 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="sd">&quot;&quot;&quot;Reference implementation for health checking in gRPC Python.&quot;&quot;&quot;</span>

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

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

<span class="kn">from</span> <span class="nn">grpc_health.v1</span> <span class="k">import</span> <span class="n">health_pb2</span> <span class="k">as</span> <span class="n">_health_pb2</span>
<span class="kn">from</span> <span class="nn">grpc_health.v1</span> <span class="k">import</span> <span class="n">health_pb2_grpc</span> <span class="k">as</span> <span class="n">_health_pb2_grpc</span>

<span class="n">SERVICE_NAME</span> <span class="o">=</span> <span class="n">_health_pb2</span><span class="o">.</span><span class="n">DESCRIPTOR</span><span class="o">.</span><span class="n">services_by_name</span><span class="p">[</span><span class="s1">&#39;Health&#39;</span><span class="p">]</span><span class="o">.</span><span class="n">full_name</span>


<div class="viewcode-block" id="HealthServicer"><a class="viewcode-back" href="../../../grpc_health_checking.html#grpc_health.v1.health.HealthServicer">[docs]</a><span class="k">class</span> <span class="nc">HealthServicer</span><span class="p">(</span><span class="n">_health_pb2_grpc</span><span class="o">.</span><span class="n">HealthServicer</span><span class="p">):</span>
    <span class="sd">&quot;&quot;&quot;Servicer handling RPCs for service statuses.&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="bp">self</span><span class="o">.</span><span class="n">_server_status_lock</span> <span class="o">=</span> <span class="n">threading</span><span class="o">.</span><span class="n">Lock</span><span class="p">()</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">_server_status</span> <span class="o">=</span> <span class="p">{}</span>

    <span class="k">def</span> <span class="nf">Check</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">context</span><span class="p">):</span>
        <span class="k">with</span> <span class="bp">self</span><span class="o">.</span><span class="n">_server_status_lock</span><span class="p">:</span>
            <span class="n">status</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_server_status</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">request</span><span class="o">.</span><span class="n">service</span><span class="p">)</span>
            <span class="k">if</span> <span class="n">status</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
                <span class="n">context</span><span class="o">.</span><span class="n">set_code</span><span class="p">(</span><span class="n">grpc</span><span class="o">.</span><span class="n">StatusCode</span><span class="o">.</span><span class="n">NOT_FOUND</span><span class="p">)</span>
                <span class="k">return</span> <span class="n">_health_pb2</span><span class="o">.</span><span class="n">HealthCheckResponse</span><span class="p">()</span>
            <span class="k">else</span><span class="p">:</span>
                <span class="k">return</span> <span class="n">_health_pb2</span><span class="o">.</span><span class="n">HealthCheckResponse</span><span class="p">(</span><span class="n">status</span><span class="o">=</span><span class="n">status</span><span class="p">)</span>

<div class="viewcode-block" id="HealthServicer.set"><a class="viewcode-back" href="../../../grpc_health_checking.html#grpc_health.v1.health.HealthServicer.set">[docs]</a>    <span class="k">def</span> <span class="nf">set</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">service</span><span class="p">,</span> <span class="n">status</span><span class="p">):</span>
        <span class="sd">&quot;&quot;&quot;Sets the status of a service.</span>

<span class="sd">    Args:</span>
<span class="sd">        service: string, the name of the service.</span>
<span class="sd">            NOTE, &#39;&#39; must be set.</span>
<span class="sd">        status: HealthCheckResponse.status enum value indicating</span>
<span class="sd">            the status of the service</span>
<span class="sd">    &quot;&quot;&quot;</span>
        <span class="k">with</span> <span class="bp">self</span><span class="o">.</span><span class="n">_server_status_lock</span><span class="p">:</span>
            <span class="bp">self</span><span class="o">.</span><span class="n">_server_status</span><span class="p">[</span><span class="n">service</span><span class="p">]</span> <span class="o">=</span> <span class="n">status</span></div></div>
</pre></div>

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