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‎blog/2018/06/30/vibora.html‎

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<p>Removed since Vibora is not in a working state.</p>

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<p>Removed.</p>

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<article itemscope itemtype="http://schema.org/BlogPosting">
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<h1>What's in Airflow's context dictionary?</h1>
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<div class="post-meta">
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<time datetime="2017-12-13T00:00:00+00:00" itemprop="datePublished">
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Beau Barker, <time>Dec 13, 2017</time>.
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Updated <time>Jul 15, 2025</time>.
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<a href="https://github.com/explodinglabs/explodinglabs.github.io/edit/main/docs/_posts/airflow/2017-12-13-airflows-execute-context.markdown">
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&#9998;
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<p><img src="/assets/airflow.png" alt="airflow" /></p>
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<p>Airflow’s context dictionary can be found in the <code class="language-plaintext highlighter-rouge">get_template_context</code> method,
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in Airflow’s
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<a href="https://github.com/databricks/incubator-airflow/blob/master/airflow/models.py">models.py</a>.</p>
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<div class="language-python highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="p">{</span>
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<span class="s">'dag'</span><span class="p">:</span> <span class="n">task</span><span class="p">.</span><span class="n">dag</span><span class="p">,</span>
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<span class="s">'ds'</span><span class="p">:</span> <span class="n">ds</span><span class="p">,</span>
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<span class="s">'ds_nodash'</span><span class="p">:</span> <span class="n">ds_nodash</span><span class="p">,</span>
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<span class="s">'ts'</span><span class="p">:</span> <span class="n">ts</span><span class="p">,</span>
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<span class="s">'ts_nodash'</span><span class="p">:</span> <span class="n">ts_nodash</span><span class="p">,</span>
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<span class="s">'yesterday_ds'</span><span class="p">:</span> <span class="n">yesterday_ds</span><span class="p">,</span>
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<span class="s">'yesterday_ds_nodash'</span><span class="p">:</span> <span class="n">yesterday_ds_nodash</span><span class="p">,</span>
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<span class="s">'tomorrow_ds'</span><span class="p">:</span> <span class="n">tomorrow_ds</span><span class="p">,</span>
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<span class="s">'tomorrow_ds_nodash'</span><span class="p">:</span> <span class="n">tomorrow_ds_nodash</span><span class="p">,</span>
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<span class="s">'END_DATE'</span><span class="p">:</span> <span class="n">ds</span><span class="p">,</span>
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<span class="s">'end_date'</span><span class="p">:</span> <span class="n">ds</span><span class="p">,</span>
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<span class="s">'dag_run'</span><span class="p">:</span> <span class="n">dag_run</span><span class="p">,</span>
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<span class="s">'run_id'</span><span class="p">:</span> <span class="n">run_id</span><span class="p">,</span>
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<span class="s">'execution_date'</span><span class="p">:</span> <span class="bp">self</span><span class="p">.</span><span class="n">execution_date</span><span class="p">,</span>
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<span class="s">'prev_execution_date'</span><span class="p">:</span> <span class="n">prev_execution_date</span><span class="p">,</span>
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<span class="s">'next_execution_date'</span><span class="p">:</span> <span class="n">next_execution_date</span><span class="p">,</span>
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<span class="s">'latest_date'</span><span class="p">:</span> <span class="n">ds</span><span class="p">,</span>
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<span class="s">'macros'</span><span class="p">:</span> <span class="n">macros</span><span class="p">,</span>
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<span class="s">'params'</span><span class="p">:</span> <span class="n">params</span><span class="p">,</span>
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<span class="s">'tables'</span><span class="p">:</span> <span class="n">tables</span><span class="p">,</span>
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<span class="s">'task'</span><span class="p">:</span> <span class="n">task</span><span class="p">,</span>
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<span class="s">'task_instance'</span><span class="p">:</span> <span class="bp">self</span><span class="p">,</span>
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<span class="s">'ti'</span><span class="p">:</span> <span class="bp">self</span><span class="p">,</span>
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<span class="s">'task_instance_key_str'</span><span class="p">:</span> <span class="n">ti_key_str</span><span class="p">,</span>
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<span class="s">'conf'</span><span class="p">:</span> <span class="n">configuration</span><span class="p">,</span>
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<span class="s">'test_mode'</span><span class="p">:</span> <span class="bp">self</span><span class="p">.</span><span class="n">test_mode</span><span class="p">,</span>
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<span class="s">'var'</span><span class="p">:</span> <span class="p">{</span>
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<span class="s">'value'</span><span class="p">:</span> <span class="n">VariableAccessor</span><span class="p">(),</span>
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<span class="s">'json'</span><span class="p">:</span> <span class="n">VariableJsonAccessor</span><span class="p">()</span>
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<span class="p">}</span>
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<span class="p">}</span>
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</code></pre></div></div>
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<p>An explanation of each item is found in the documentation under
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<a href="https://airflow.apache.org/docs/stable/macros-ref.html">Macros</a>.</p>
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<p>Incidentally, you can generate the context from a TaskInstance.</p>
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<div class="language-python highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="n">context</span> <span class="o">=</span> <span class="n">TaskInstance</span><span class="p">(</span>
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<span class="n">task</span><span class="o">=</span><span class="n">task</span><span class="p">,</span>
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<span class="n">execution_date</span><span class="o">=</span><span class="n">datetime</span><span class="p">.</span><span class="n">now</span><span class="p">()</span>
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<span class="p">).</span><span class="n">get_template_context</span><span class="p">()</span>
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</code></pre></div></div>
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<footer>
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‎blog/airflow/fernet-key.html‎

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<h1>How to generate a Fernet key?</h1>
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<div class="post-meta">
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<time datetime="2018-01-12T00:00:00+00:00" itemprop="datePublished">
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Beau Barker, <time>Jan 12, 2018</time>.
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Updated <time>Jul 15, 2025</time>.
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<a href="https://github.com/explodinglabs/explodinglabs.github.io/edit/main/docs/_posts/airflow/2018-01-12-generate-fernet-key.markdown">
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&#9998;
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</a>
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</time>
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<div class="wide-logos">
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<p><img src="/assets/airflow.png" alt="airflow" /></p>
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</div>
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<p>Install cryptography:</p>
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<div class="language-shell highlighter-rouge"><div class="highlight"><pre class="highlight"><code>pip <span class="nb">install </span>cryptography
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</code></pre></div></div>
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<p>Generate a fernet key:</p>
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<div class="language-shell highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="nv">$ </span>python <span class="nt">-c</span> <span class="s2">"from cryptography.fernet import Fernet; print(Fernet.generate_key().decode())"</span>
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<span class="nv">81HqDtbqAywKSOumSha3BhWNOdQ26slT6K0YaZeZyPs</span><span class="o">=</span>
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</code></pre></div></div>
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<h2 id="use-a-fernet-key-with-airflow">Use a fernet key with Airflow</h2>
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<p>Paste the key into your <code class="language-plaintext highlighter-rouge">airflow.cfg</code>.</p>
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<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>fernet_key = 81HqDtbqAywKSOumSha3BhWNOdQ26slT6K0YaZeZyPs=
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</code></pre></div></div>
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<p>Alternatively, set the environment variable.</p>
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<div class="language-shell highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="nv">AIRFLOW__CORE__FERNET_KEY</span><span class="o">=</span><span class="s1">'81HqDtbqAywKSOumSha3BhWNOdQ26slT6K0YaZeZyPs='</span>
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</code></pre></div></div>
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<p>Restart Airflow’s webserver.</p>
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<div class="warning">
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<p>For existing connections (the ones that were defined before setting the Fernet
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key), you need to open each connection in the web admin, re-type the password
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and save it.</p>
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</div>
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<footer>
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<a href="/airflow">More Airflow posts</a>
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