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   <h1>Source code for apache_beam.runners.interactive.testing.integration.notebook_executor</h1><div class="highlight"><pre>
 <span></span><span class="c1">#</span>
 <span class="c1"># Licensed to the Apache Software Foundation (ASF) under one or more</span>
 <span class="c1"># contributor license agreements.  See the NOTICE file distributed with</span>
 <span class="c1"># this work for additional information regarding copyright ownership.</span>
 <span class="c1"># The ASF licenses this file to You under the Apache License, Version 2.0</span>
 <span class="c1"># (the &quot;License&quot;); you may not use this file except in compliance with</span>
 <span class="c1"># the License.  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="c1">#</span>

 <span class="sd">&quot;&quot;&quot;Module to execute jupyter notebooks and gather the output into renderable</span>
 <span class="sd">HTML files.&quot;&quot;&quot;</span>

 <span class="c1"># pytype: skip-file</span>

 <span class="kn">import</span> <span class="nn">html</span>
 <span class="kn">import</span> <span class="nn">os</span>
 <span class="kn">import</span> <span class="nn">shutil</span>
 <span class="kn">import</span> <span class="nn">subprocess</span>
 <span class="kn">from</span> <span class="nn">html.parser</span> <span class="kn">import</span> <span class="n">HTMLParser</span>

 <span class="kn">from</span> <span class="nn">apache_beam.runners.interactive.utils</span> <span class="kn">import</span> <span class="n">obfuscate</span>

 <span class="k">try</span><span class="p">:</span>
   <span class="kn">import</span> <span class="nn">nbformat</span>
   <span class="kn">from</span> <span class="nn">jupyter_client.kernelspec</span> <span class="kn">import</span> <span class="n">KernelSpecManager</span>
   <span class="kn">from</span> <span class="nn">nbconvert.preprocessors</span> <span class="kn">import</span> <span class="n">ExecutePreprocessor</span>
   <span class="n">_interactive_integration_ready</span> <span class="o">=</span> <span class="kc">True</span>
 <span class="k">except</span> <span class="ne">ImportError</span><span class="p">:</span>
   <span class="n">_interactive_integration_ready</span> <span class="o">=</span> <span class="kc">False</span>


 <div class="viewcode-block" id="NotebookExecutor"><a class="viewcode-back" href="../../../../../../apache_beam.runners.interactive.testing.integration.notebook_executor.html#apache_beam.runners.interactive.testing.integration.notebook_executor.NotebookExecutor">[docs]</a><span class="k">class</span> <span class="nc">NotebookExecutor</span><span class="p">(</span><span class="nb">object</span><span class="p">):</span>
   <span class="sd">&quot;&quot;&quot;Executor that reads notebooks, executes it and gathers outputs into static</span>
 <span class="sd">  HTML pages that can be served.&quot;&quot;&quot;</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">path</span><span class="p">):</span>
     <span class="c1"># type: (str) -&gt; None</span>

     <span class="k">assert</span> <span class="n">_interactive_integration_ready</span><span class="p">,</span> <span class="p">(</span>
         <span class="s1">&#39;[interactive_test] dependency is not installed.&#39;</span><span class="p">)</span>
     <span class="k">assert</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">exists</span><span class="p">(</span><span class="n">path</span><span class="p">),</span> <span class="s1">&#39;</span><span class="si">{}</span><span class="s1"> does not exist.&#39;</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">path</span><span class="p">)</span>
     <span class="bp">self</span><span class="o">.</span><span class="n">_paths</span> <span class="o">=</span> <span class="p">[]</span>
     <span class="k">if</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">isdir</span><span class="p">(</span><span class="n">path</span><span class="p">):</span>
       <span class="k">for</span> <span class="n">root</span><span class="p">,</span> <span class="n">_</span><span class="p">,</span> <span class="n">files</span> <span class="ow">in</span> <span class="n">os</span><span class="o">.</span><span class="n">walk</span><span class="p">(</span><span class="n">path</span><span class="p">):</span>
         <span class="k">for</span> <span class="n">filename</span> <span class="ow">in</span> <span class="n">files</span><span class="p">:</span>
           <span class="k">if</span> <span class="n">filename</span><span class="o">.</span><span class="n">endswith</span><span class="p">(</span><span class="s1">&#39;.ipynb&#39;</span><span class="p">):</span>
             <span class="bp">self</span><span class="o">.</span><span class="n">_paths</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">root</span><span class="p">,</span> <span class="n">filename</span><span class="p">))</span>
     <span class="k">elif</span> <span class="n">path</span><span class="o">.</span><span class="n">endswith</span><span class="p">(</span><span class="s1">&#39;.ipynb&#39;</span><span class="p">):</span>
       <span class="bp">self</span><span class="o">.</span><span class="n">_paths</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">path</span><span class="p">)</span>
     <span class="k">assert</span> <span class="nb">len</span><span class="p">(</span>
         <span class="bp">self</span><span class="o">.</span><span class="n">_paths</span><span class="p">)</span> <span class="o">&gt;</span> <span class="mi">0</span><span class="p">,</span> <span class="p">(</span><span class="s1">&#39;No notebooks to be executed under</span><span class="si">{}</span><span class="s1">&#39;</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">path</span><span class="p">))</span>
     <span class="bp">self</span><span class="o">.</span><span class="n">_dir</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">dirname</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_paths</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span>
     <span class="bp">self</span><span class="o">.</span><span class="n">_output_html_dir</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_dir</span><span class="p">,</span> <span class="s1">&#39;output&#39;</span><span class="p">)</span>
     <span class="bp">self</span><span class="o">.</span><span class="n">cleanup</span><span class="p">()</span>
     <span class="bp">self</span><span class="o">.</span><span class="n">_output_html_paths</span> <span class="o">=</span> <span class="p">{}</span>
     <span class="bp">self</span><span class="o">.</span><span class="n">_notebook_path_to_execution_id</span> <span class="o">=</span> <span class="p">{}</span>
     <span class="n">kernel_specs</span> <span class="o">=</span> <span class="n">KernelSpecManager</span><span class="p">()</span><span class="o">.</span><span class="n">get_all_specs</span><span class="p">()</span>
     <span class="k">if</span> <span class="s1">&#39;test&#39;</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">kernel_specs</span><span class="p">:</span>
       <span class="c1"># Install a test ipython kernel in current runtime environment. If this</span>
       <span class="c1"># errors out, it means the test env is broken and should fail the test.</span>
       <span class="n">process</span> <span class="o">=</span> <span class="n">subprocess</span><span class="o">.</span><span class="n">run</span><span class="p">(</span>
           <span class="p">[</span><span class="s1">&#39;python&#39;</span><span class="p">,</span> <span class="s1">&#39;-m&#39;</span><span class="p">,</span> <span class="s1">&#39;ipykernel&#39;</span><span class="p">,</span> <span class="s1">&#39;install&#39;</span><span class="p">,</span> <span class="s1">&#39;--user&#39;</span><span class="p">,</span> <span class="s1">&#39;--name&#39;</span><span class="p">,</span> <span class="s1">&#39;test&#39;</span><span class="p">],</span>
           <span class="n">check</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span>
       <span class="n">process</span><span class="o">.</span><span class="n">check_returncode</span><span class="p">()</span>

 <div class="viewcode-block" id="NotebookExecutor.cleanup"><a class="viewcode-back" href="../../../../../../apache_beam.runners.interactive.testing.integration.notebook_executor.html#apache_beam.runners.interactive.testing.integration.notebook_executor.NotebookExecutor.cleanup">[docs]</a>  <span class="k">def</span> <span class="nf">cleanup</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
     <span class="sd">&quot;&quot;&quot;Cleans up the output folder.&quot;&quot;&quot;</span>
     <span class="n">_cleanup</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_output_html_dir</span><span class="p">)</span></div>

 <div class="viewcode-block" id="NotebookExecutor.execute"><a class="viewcode-back" href="../../../../../../apache_beam.runners.interactive.testing.integration.notebook_executor.html#apache_beam.runners.interactive.testing.integration.notebook_executor.NotebookExecutor.execute">[docs]</a>  <span class="k">def</span> <span class="nf">execute</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
     <span class="sd">&quot;&quot;&quot;Executes all notebooks found in the scoped path and gathers their</span>
 <span class="sd">    outputs into HTML pages stored in the output folder.&quot;&quot;&quot;</span>
     <span class="k">for</span> <span class="n">path</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_paths</span><span class="p">:</span>
       <span class="k">with</span> <span class="nb">open</span><span class="p">(</span><span class="n">path</span><span class="p">,</span> <span class="s1">&#39;r&#39;</span><span class="p">)</span> <span class="k">as</span> <span class="n">nb_f</span><span class="p">:</span>
         <span class="n">nb</span> <span class="o">=</span> <span class="n">nbformat</span><span class="o">.</span><span class="n">read</span><span class="p">(</span><span class="n">nb_f</span><span class="p">,</span> <span class="n">as_version</span><span class="o">=</span><span class="mi">4</span><span class="p">)</span>
         <span class="n">ep</span> <span class="o">=</span> <span class="n">ExecutePreprocessor</span><span class="p">(</span>
             <span class="n">timeout</span><span class="o">=-</span><span class="mi">1</span><span class="p">,</span> <span class="n">allow_errors</span><span class="o">=</span><span class="kc">True</span><span class="p">,</span> <span class="n">kernel_name</span><span class="o">=</span><span class="s1">&#39;test&#39;</span><span class="p">)</span>
         <span class="n">ep</span><span class="o">.</span><span class="n">preprocess</span><span class="p">(</span><span class="n">nb</span><span class="p">,</span> <span class="p">{</span><span class="s1">&#39;metadata&#39;</span><span class="p">:</span> <span class="p">{</span><span class="s1">&#39;path&#39;</span><span class="p">:</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">dirname</span><span class="p">(</span><span class="n">path</span><span class="p">)}})</span>

       <span class="n">execution_id</span> <span class="o">=</span> <span class="n">obfuscate</span><span class="p">(</span><span class="n">path</span><span class="p">)</span>
       <span class="n">output_html_path</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span>
           <span class="bp">self</span><span class="o">.</span><span class="n">_output_html_dir</span><span class="p">,</span> <span class="n">execution_id</span> <span class="o">+</span> <span class="s1">&#39;.html&#39;</span><span class="p">)</span>
       <span class="k">with</span> <span class="nb">open</span><span class="p">(</span><span class="n">output_html_path</span><span class="p">,</span> <span class="s1">&#39;a+&#39;</span><span class="p">)</span> <span class="k">as</span> <span class="n">sink</span><span class="p">:</span>
         <span class="n">sink</span><span class="o">.</span><span class="n">write</span><span class="p">(</span><span class="s1">&#39;&lt;html&gt;</span><span class="se">\n</span><span class="s1">&#39;</span><span class="p">)</span>
         <span class="n">sink</span><span class="o">.</span><span class="n">write</span><span class="p">(</span><span class="s1">&#39;&lt;head&gt;</span><span class="se">\n</span><span class="s1">&#39;</span><span class="p">)</span>
         <span class="n">sink</span><span class="o">.</span><span class="n">write</span><span class="p">(</span><span class="s1">&#39;&lt;/head&gt;</span><span class="se">\n</span><span class="s1">&#39;</span><span class="p">)</span>
         <span class="n">sink</span><span class="o">.</span><span class="n">write</span><span class="p">(</span><span class="s1">&#39;&lt;body&gt;</span><span class="se">\n</span><span class="s1">&#39;</span><span class="p">)</span>
         <span class="k">for</span> <span class="n">cell</span> <span class="ow">in</span> <span class="n">nb</span><span class="p">[</span><span class="s1">&#39;cells&#39;</span><span class="p">]:</span>
           <span class="k">if</span> <span class="n">cell</span><span class="p">[</span><span class="s1">&#39;cell_type&#39;</span><span class="p">]</span> <span class="o">==</span> <span class="s1">&#39;code&#39;</span><span class="p">:</span>
             <span class="k">for</span> <span class="n">output</span> <span class="ow">in</span> <span class="n">cell</span><span class="p">[</span><span class="s1">&#39;outputs&#39;</span><span class="p">]:</span>
               <span class="n">_extract_html</span><span class="p">(</span><span class="n">output</span><span class="p">,</span> <span class="n">sink</span><span class="p">)</span>
         <span class="n">sink</span><span class="o">.</span><span class="n">write</span><span class="p">(</span><span class="s1">&#39;&lt;/body&gt;</span><span class="se">\n</span><span class="s1">&#39;</span><span class="p">)</span>
         <span class="n">sink</span><span class="o">.</span><span class="n">write</span><span class="p">(</span><span class="s1">&#39;&lt;/html&gt;</span><span class="se">\n</span><span class="s1">&#39;</span><span class="p">)</span>
       <span class="bp">self</span><span class="o">.</span><span class="n">_output_html_paths</span><span class="p">[</span><span class="n">execution_id</span><span class="p">]</span> <span class="o">=</span> <span class="n">output_html_path</span>
       <span class="bp">self</span><span class="o">.</span><span class="n">_notebook_path_to_execution_id</span><span class="p">[</span><span class="n">path</span><span class="p">]</span> <span class="o">=</span> <span class="n">execution_id</span></div>

   <span class="nd">@property</span>
   <span class="k">def</span> <span class="nf">output_html_paths</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
     <span class="sd">&quot;&quot;&quot;Mapping from execution ids to output html page paths.</span>

 <span class="sd">    An execution/test id is an obfuscated value from the executed notebook path.</span>
 <span class="sd">    It identifies the input notebook, the output html, the screenshot of the</span>
 <span class="sd">    output html, and the golden screenshot for comparison.</span>
 <span class="sd">    &quot;&quot;&quot;</span>
     <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_output_html_paths</span>

   <span class="nd">@property</span>
   <span class="k">def</span> <span class="nf">output_html_dir</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
     <span class="sd">&quot;&quot;&quot;The directory&#39;s path to all the output html pages generated.&quot;&quot;&quot;</span>
     <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_output_html_dir</span>

   <span class="nd">@property</span>
   <span class="k">def</span> <span class="nf">notebook_path_to_execution_id</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
     <span class="sd">&quot;&quot;&quot;Mapping from input notebook paths to their obfuscated execution ids.&quot;&quot;&quot;</span>
     <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_notebook_path_to_execution_id</span></div>


 <span class="k">def</span> <span class="nf">_cleanup</span><span class="p">(</span><span class="n">output_dir</span><span class="p">):</span>
   <span class="sd">&quot;&quot;&quot;Cleans up the given output_dir.&quot;&quot;&quot;</span>
   <span class="k">if</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">exists</span><span class="p">(</span><span class="n">output_dir</span><span class="p">):</span>
     <span class="n">shutil</span><span class="o">.</span><span class="n">rmtree</span><span class="p">(</span><span class="n">output_dir</span><span class="p">)</span>
   <span class="n">os</span><span class="o">.</span><span class="n">makedirs</span><span class="p">(</span><span class="n">output_dir</span><span class="p">)</span>


 <span class="k">def</span> <span class="nf">_extract_html</span><span class="p">(</span><span class="n">output</span><span class="p">,</span> <span class="n">sink</span><span class="p">):</span>
   <span class="sd">&quot;&quot;&quot;Extracts html elements from the output of an executed notebook node and</span>
 <span class="sd">  writes them into a file sink.&quot;&quot;&quot;</span>
   <span class="k">if</span> <span class="n">output</span><span class="p">[</span><span class="s1">&#39;output_type&#39;</span><span class="p">]</span> <span class="o">==</span> <span class="s1">&#39;display_data&#39;</span><span class="p">:</span>
     <span class="n">data</span> <span class="o">=</span> <span class="n">output</span><span class="p">[</span><span class="s1">&#39;data&#39;</span><span class="p">]</span>
     <span class="k">if</span> <span class="s1">&#39;application/javascript&#39;</span> <span class="ow">in</span> <span class="n">data</span><span class="p">:</span>
       <span class="n">sink</span><span class="o">.</span><span class="n">write</span><span class="p">(</span><span class="s1">&#39;&lt;script&gt;</span><span class="se">\n</span><span class="s1">&#39;</span><span class="p">)</span>
       <span class="n">sink</span><span class="o">.</span><span class="n">write</span><span class="p">(</span><span class="n">data</span><span class="p">[</span><span class="s1">&#39;application/javascript&#39;</span><span class="p">])</span>
       <span class="n">sink</span><span class="o">.</span><span class="n">write</span><span class="p">(</span><span class="s1">&#39;&lt;/script&gt;</span><span class="se">\n</span><span class="s1">&#39;</span><span class="p">)</span>
     <span class="k">if</span> <span class="s1">&#39;text/html&#39;</span> <span class="ow">in</span> <span class="n">data</span><span class="p">:</span>
       <span class="n">parser</span> <span class="o">=</span> <span class="n">IFrameParser</span><span class="p">()</span>
       <span class="n">parser</span><span class="o">.</span><span class="n">feed</span><span class="p">(</span><span class="n">data</span><span class="p">[</span><span class="s1">&#39;text/html&#39;</span><span class="p">])</span>
       <span class="k">if</span> <span class="n">parser</span><span class="o">.</span><span class="n">srcdocs</span><span class="p">:</span>
         <span class="n">sink</span><span class="o">.</span><span class="n">write</span><span class="p">(</span><span class="n">parser</span><span class="o">.</span><span class="n">srcdocs</span><span class="p">)</span>
       <span class="k">else</span><span class="p">:</span>
         <span class="n">sink</span><span class="o">.</span><span class="n">write</span><span class="p">(</span><span class="n">data</span><span class="p">[</span><span class="s1">&#39;text/html&#39;</span><span class="p">])</span>


 <div class="viewcode-block" id="IFrameParser"><a class="viewcode-back" href="../../../../../../apache_beam.runners.interactive.testing.integration.notebook_executor.html#apache_beam.runners.interactive.testing.integration.notebook_executor.IFrameParser">[docs]</a><span class="k">class</span> <span class="nc">IFrameParser</span><span class="p">(</span><span class="n">HTMLParser</span><span class="p">):</span>
   <span class="sd">&quot;&quot;&quot;A parser to extract iframe content from given HTML.&quot;&quot;&quot;</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="bp">self</span><span class="o">.</span><span class="n">_srcdocs</span> <span class="o">=</span> <span class="p">[]</span>
     <span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="fm">__init__</span><span class="p">()</span>

 <div class="viewcode-block" id="IFrameParser.handle_starttag"><a class="viewcode-back" href="../../../../../../apache_beam.runners.interactive.testing.integration.notebook_executor.html#apache_beam.runners.interactive.testing.integration.notebook_executor.IFrameParser.handle_starttag">[docs]</a>  <span class="k">def</span> <span class="nf">handle_starttag</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">tag</span><span class="p">,</span> <span class="n">attrs</span><span class="p">):</span>
     <span class="k">if</span> <span class="n">tag</span> <span class="o">==</span> <span class="s1">&#39;iframe&#39;</span><span class="p">:</span>
       <span class="k">for</span> <span class="n">attr</span> <span class="ow">in</span> <span class="n">attrs</span><span class="p">:</span>
         <span class="k">if</span> <span class="s1">&#39;srcdoc&#39;</span> <span class="ow">in</span> <span class="n">attr</span><span class="p">:</span>
           <span class="bp">self</span><span class="o">.</span><span class="n">_srcdocs</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">html</span><span class="o">.</span><span class="n">unescape</span><span class="p">(</span><span class="n">attr</span><span class="p">[</span><span class="mi">1</span><span class="p">]))</span></div>

   <span class="nd">@property</span>
   <span class="k">def</span> <span class="nf">srcdocs</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
     <span class="k">return</span> <span class="s1">&#39;</span><span class="se">\n</span><span class="s1">&#39;</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_srcdocs</span><span class="p">)</span></div>
 </pre></div>

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