input/releases/qpid-proton-0.32.0/proton/python/examples/direct_recv.py.html.in

<h1>direct_recv.py</h1>
<div class="highlight"><pre><span></span><span class="kn">from</span> <span class="nn">__future__</span> <span class="kn">import</span> <span class="n">print_function</span>
<span class="kn">import</span> <span class="nn">optparse</span>
<span class="kn">from</span> <span class="nn">proton.handlers</span> <span class="kn">import</span> <span class="n">MessagingHandler</span>
<span class="kn">from</span> <span class="nn">proton.reactor</span> <span class="kn">import</span> <span class="n">Container</span>

<span class="k">class</span> <span class="nc">Recv</span><span class="p">(</span><span class="n">MessagingHandler</span><span class="p">):</span>
    <span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">url</span><span class="p">,</span> <span class="n">count</span><span class="p">):</span>
        <span class="nb">super</span><span class="p">(</span><span class="n">Recv</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="fm">__init__</span><span class="p">()</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">url</span> <span class="o">=</span> <span class="n">url</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">expected</span> <span class="o">=</span> <span class="n">count</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">received</span> <span class="o">=</span> <span class="mi">0</span>

    <span class="k">def</span> <span class="nf">on_start</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">event</span><span class="p">):</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">acceptor</span> <span class="o">=</span> <span class="n">event</span><span class="o">.</span><span class="n">container</span><span class="o">.</span><span class="n">listen</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">url</span><span class="p">)</span>

    <span class="k">def</span> <span class="nf">on_message</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">event</span><span class="p">):</span>
        <span class="k">if</span> <span class="n">event</span><span class="o">.</span><span class="n">message</span><span class="o">.</span><span class="n">id</span> <span class="ow">and</span> <span class="n">event</span><span class="o">.</span><span class="n">message</span><span class="o">.</span><span class="n">id</span> <span class="o">&lt;</span> <span class="bp">self</span><span class="o">.</span><span class="n">received</span><span class="p">:</span>
            <span class="c1"># ignore duplicate message</span>
            <span class="k">return</span>
        <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">expected</span> <span class="o">==</span> <span class="mi">0</span> <span class="ow">or</span> <span class="bp">self</span><span class="o">.</span><span class="n">received</span> <span class="o">&lt;</span> <span class="bp">self</span><span class="o">.</span><span class="n">expected</span><span class="p">:</span>
            <span class="nb">print</span><span class="p">(</span><span class="n">event</span><span class="o">.</span><span class="n">message</span><span class="o">.</span><span class="n">body</span><span class="p">)</span>
            <span class="bp">self</span><span class="o">.</span><span class="n">received</span> <span class="o">+=</span> <span class="mi">1</span>
            <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">received</span> <span class="o">==</span> <span class="bp">self</span><span class="o">.</span><span class="n">expected</span><span class="p">:</span>
                <span class="n">event</span><span class="o">.</span><span class="n">receiver</span><span class="o">.</span><span class="n">close</span><span class="p">()</span>
                <span class="n">event</span><span class="o">.</span><span class="n">connection</span><span class="o">.</span><span class="n">close</span><span class="p">()</span>
                <span class="bp">self</span><span class="o">.</span><span class="n">acceptor</span><span class="o">.</span><span class="n">close</span><span class="p">()</span>

<span class="n">parser</span> <span class="o">=</span> <span class="n">optparse</span><span class="o">.</span><span class="n">OptionParser</span><span class="p">(</span><span class="n">usage</span><span class="o">=</span><span class="s2">&quot;usage: %prog [options]&quot;</span><span class="p">)</span>
<span class="n">parser</span><span class="o">.</span><span class="n">add_option</span><span class="p">(</span><span class="s2">&quot;-a&quot;</span><span class="p">,</span> <span class="s2">&quot;--address&quot;</span><span class="p">,</span> <span class="n">default</span><span class="o">=</span><span class="s2">&quot;localhost:5672/examples&quot;</span><span class="p">,</span>
                  <span class="n">help</span><span class="o">=</span><span class="s2">&quot;address from which messages are received (default </span><span class="si">%d</span><span class="s2">efault)&quot;</span><span class="p">)</span>
<span class="n">parser</span><span class="o">.</span><span class="n">add_option</span><span class="p">(</span><span class="s2">&quot;-m&quot;</span><span class="p">,</span> <span class="s2">&quot;--messages&quot;</span><span class="p">,</span> <span class="nb">type</span><span class="o">=</span><span class="s2">&quot;int&quot;</span><span class="p">,</span> <span class="n">default</span><span class="o">=</span><span class="mi">100</span><span class="p">,</span>
                  <span class="n">help</span><span class="o">=</span><span class="s2">&quot;number of messages to receive; 0 receives indefinitely (default </span><span class="si">%d</span><span class="s2">efault)&quot;</span><span class="p">)</span>
<span class="n">opts</span><span class="p">,</span> <span class="n">args</span> <span class="o">=</span> <span class="n">parser</span><span class="o">.</span><span class="n">parse_args</span><span class="p">()</span>

<span class="k">try</span><span class="p">:</span>
    <span class="n">Container</span><span class="p">(</span><span class="n">Recv</span><span class="p">(</span><span class="n">opts</span><span class="o">.</span><span class="n">address</span><span class="p">,</span> <span class="n">opts</span><span class="o">.</span><span class="n">messages</span><span class="p">))</span><span class="o">.</span><span class="n">run</span><span class="p">()</span>
<span class="k">except</span> <span class="ne">KeyboardInterrupt</span><span class="p">:</span> <span class="k">pass</span>
</pre></div>

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