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<h1>Source code for amqp.router.utils</h1><div class="highlight"><pre>
<span></span><span class="kn">import</span><span class="w"> </span><span class="nn">asyncio</span>
<span class="kn">import</span><span class="w"> </span><span class="nn">re</span>
<span class="n">pattern</span> <span class="o">=</span> <span class="n">re</span><span class="o">.</span><span class="n">compile</span><span class="p">(</span><span class="sa">r</span><span class="s2">&quot;[^a-zA-Z0-9.#/\-]&quot;</span><span class="p">)</span>
<span class="n">AWAIT_SLEEP</span> <span class="o">=</span> <span class="mf">0.05</span> <span class="c1"># seconds</span>
<div class="viewcode-block" id="sanitize_as_rabbitmq_name">
<a class="viewcode-back" href="../../../modules/amqp.router.html#amqp.router.utils.sanitize_as_rabbitmq_name">[docs]</a>
<span class="k">def</span><span class="w"> </span><span class="nf">sanitize_as_rabbitmq_name</span><span class="p">(</span><span class="n">input_str</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nb">str</span><span class="p">:</span>
<span class="n">matcher</span> <span class="o">=</span> <span class="n">pattern</span><span class="o">.</span><span class="n">search</span><span class="p">(</span><span class="n">input_str</span><span class="p">)</span>
<span class="n">token</span> <span class="o">=</span> <span class="n">input_str</span><span class="p">[:</span> <span class="n">matcher</span><span class="o">.</span><span class="n">start</span><span class="p">()]</span> <span class="k">if</span> <span class="n">matcher</span> <span class="k">else</span> <span class="n">input_str</span>
<span class="k">return</span> <span class="n">sanitize_as_rabbitmq_domain_name</span><span class="p">(</span><span class="n">token</span><span class="p">)</span></div>
<div class="viewcode-block" id="sanitize_as_rabbitmq_domain_name">
<a class="viewcode-back" href="../../../modules/amqp.router.html#amqp.router.utils.sanitize_as_rabbitmq_domain_name">[docs]</a>
<span class="k">def</span><span class="w"> </span><span class="nf">sanitize_as_rabbitmq_domain_name</span><span class="p">(</span><span class="n">token</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nb">str</span><span class="p">:</span>
<span class="c1"># Step 1: Replace non-alphanumeric characters (except periods) with a period</span>
<span class="n">step1</span> <span class="o">=</span> <span class="n">re</span><span class="o">.</span><span class="n">sub</span><span class="p">(</span><span class="sa">r</span><span class="s2">&quot;[^A-Za-z0-9.#]&quot;</span><span class="p">,</span> <span class="s2">&quot;.&quot;</span><span class="p">,</span> <span class="n">token</span><span class="p">)</span>
<span class="c1"># Step 2: Replace multiple consecutive periods with a single period</span>
<span class="n">step2</span> <span class="o">=</span> <span class="n">re</span><span class="o">.</span><span class="n">sub</span><span class="p">(</span><span class="sa">r</span><span class="s2">&quot;\.+&quot;</span><span class="p">,</span> <span class="s2">&quot;.&quot;</span><span class="p">,</span> <span class="n">step1</span><span class="p">)</span>
<span class="c1"># Step 3: Remove trailing &#39;.&#39; character, if applicable</span>
<span class="n">step_last_char</span> <span class="o">=</span> <span class="nb">len</span><span class="p">(</span><span class="n">step2</span><span class="p">)</span> <span class="o">-</span> <span class="mi">1</span>
<span class="k">return</span> <span class="n">step2</span><span class="p">[:</span><span class="o">-</span><span class="mi">1</span><span class="p">]</span> <span class="k">if</span> <span class="n">step_last_char</span> <span class="o">&gt;</span> <span class="mi">0</span> <span class="ow">and</span> <span class="n">step2</span><span class="p">[</span><span class="n">step_last_char</span><span class="p">]</span> <span class="o">==</span> <span class="s2">&quot;.&quot;</span> <span class="k">else</span> <span class="n">step2</span></div>
<div class="viewcode-block" id="await_future">
<a class="viewcode-back" href="../../../modules/amqp.router.html#amqp.router.utils.await_future">[docs]</a>
<span class="k">async</span> <span class="k">def</span><span class="w"> </span><span class="nf">await_future</span><span class="p">(</span><span class="n">future</span><span class="p">:</span> <span class="n">asyncio</span><span class="o">.</span><span class="n">Future</span><span class="p">,</span> <span class="n">sleep_time</span><span class="o">=</span><span class="n">AWAIT_SLEEP</span><span class="p">):</span>
<span class="w"> </span><span class="sd">&quot;&quot;&quot;</span>
<span class="sd"> Wait for a future to complete.</span>
<span class="sd"> &quot;&quot;&quot;</span>
<span class="k">while</span> <span class="ow">not</span> <span class="n">future</span><span class="o">.</span><span class="n">done</span><span class="p">():</span>
<span class="k">await</span> <span class="n">asyncio</span><span class="o">.</span><span class="n">sleep</span><span class="p">(</span><span class="n">sleep_time</span><span class="p">)</span></div>
<div class="viewcode-block" id="await_result">
<a class="viewcode-back" href="../../../modules/amqp.router.html#amqp.router.utils.await_result">[docs]</a>
<span class="k">async</span> <span class="k">def</span><span class="w"> </span><span class="nf">await_result</span><span class="p">(</span><span class="n">future</span><span class="p">:</span> <span class="n">asyncio</span><span class="o">.</span><span class="n">Future</span><span class="p">,</span> <span class="n">sleep_time</span><span class="o">=</span><span class="n">AWAIT_SLEEP</span><span class="p">):</span>
<span class="w"> </span><span class="sd">&quot;&quot;&quot;</span>
<span class="sd"> Wait for a future to complete and return its result.</span>
<span class="sd"> &quot;&quot;&quot;</span>
<span class="k">await</span> <span class="n">await_future</span><span class="p">(</span><span class="n">future</span><span class="p">,</span> <span class="n">sleep_time</span><span class="o">=</span><span class="n">sleep_time</span><span class="p">)</span>
<span class="k">return</span> <span class="n">future</span><span class="o">.</span><span class="n">result</span><span class="p">()</span></div>
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