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| <h1>Source code for airflow.utils.operator_resources</h1><div class="highlight"><pre> |
| <span></span><span class="c1"># -*- coding: utf-8 -*-</span> |
| <span class="c1">#</span> |
| <span class="c1"># Licensed to the Apache Software Foundation (ASF) under one</span> |
| <span class="c1"># or more contributor license agreements. See the NOTICE file</span> |
| <span class="c1"># distributed with this work for additional information</span> |
| <span class="c1"># regarding copyright ownership. The ASF licenses this file</span> |
| <span class="c1"># to you under the Apache License, Version 2.0 (the</span> |
| <span class="c1"># "License"); you may not use this file except in compliance</span> |
| <span class="c1"># with 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,</span> |
| <span class="c1"># software distributed under the License is distributed on an</span> |
| <span class="c1"># "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</span> |
| <span class="c1"># KIND, either express or implied. See the License for the</span> |
| <span class="c1"># specific language governing permissions and limitations</span> |
| <span class="c1"># under the License.</span> |
| |
| <span class="kn">from</span> <span class="nn">airflow</span> <span class="k">import</span> <span class="n">configuration</span> |
| <span class="kn">from</span> <span class="nn">airflow.exceptions</span> <span class="k">import</span> <span class="n">AirflowException</span> |
| |
| <span class="c1"># Constants for resources (megabytes are the base unit)</span> |
| <span class="n">MB</span> <span class="o">=</span> <span class="mi">1</span> |
| <span class="n">GB</span> <span class="o">=</span> <span class="mi">1024</span> <span class="o">*</span> <span class="n">MB</span> |
| <span class="n">TB</span> <span class="o">=</span> <span class="mi">1024</span> <span class="o">*</span> <span class="n">GB</span> |
| <span class="n">PB</span> <span class="o">=</span> <span class="mi">1024</span> <span class="o">*</span> <span class="n">TB</span> |
| <span class="n">EB</span> <span class="o">=</span> <span class="mi">1024</span> <span class="o">*</span> <span class="n">PB</span> |
| |
| |
| <span class="k">class</span> <span class="nc">Resource</span><span class="p">(</span><span class="nb">object</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Represents a resource requirement in an execution environment for an operator.</span> |
| |
| <span class="sd"> :param name: Name of the resource</span> |
| <span class="sd"> :type name: str</span> |
| <span class="sd"> :param units_str: The string representing the units of a resource (e.g. MB for a CPU</span> |
| <span class="sd"> resource) to be used for display purposes</span> |
| <span class="sd"> :type units_str: str</span> |
| <span class="sd"> :param qty: The number of units of the specified resource that are required for</span> |
| <span class="sd"> execution of the operator.</span> |
| <span class="sd"> :type qty: long</span> |
| <span class="sd"> """</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="n">name</span><span class="p">,</span> <span class="n">units_str</span><span class="p">,</span> <span class="n">qty</span><span class="p">):</span> |
| <span class="k">if</span> <span class="n">qty</span> <span class="o"><</span> <span class="mi">0</span><span class="p">:</span> |
| <span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span> |
| <span class="s1">'Received resource quantity </span><span class="si">{}</span><span class="s1"> for resource </span><span class="si">{}</span><span class="s1"> but resource quantity '</span> |
| <span class="s1">'must be non-negative.'</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">qty</span><span class="p">,</span> <span class="n">name</span><span class="p">))</span> |
| |
| <span class="bp">self</span><span class="o">.</span><span class="n">_name</span> <span class="o">=</span> <span class="n">name</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_units_str</span> <span class="o">=</span> <span class="n">units_str</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_qty</span> <span class="o">=</span> <span class="n">qty</span> |
| |
| <span class="k">def</span> <span class="nf">__eq__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">other</span><span class="p">):</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="vm">__dict__</span> <span class="o">==</span> <span class="n">other</span><span class="o">.</span><span class="vm">__dict__</span> |
| |
| <span class="k">def</span> <span class="nf">__repr__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="k">return</span> <span class="nb">str</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="vm">__dict__</span><span class="p">)</span> |
| |
| <span class="nd">@property</span> |
| <span class="k">def</span> <span class="nf">name</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_name</span> |
| |
| <span class="nd">@property</span> |
| <span class="k">def</span> <span class="nf">units_str</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_units_str</span> |
| |
| <span class="nd">@property</span> |
| <span class="k">def</span> <span class="nf">qty</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_qty</span> |
| |
| |
| <span class="k">class</span> <span class="nc">CpuResource</span><span class="p">(</span><span class="n">Resource</span><span class="p">):</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="n">qty</span><span class="p">):</span> |
| <span class="nb">super</span><span class="p">(</span><span class="n">CpuResource</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="s1">'CPU'</span><span class="p">,</span> <span class="s1">'core(s)'</span><span class="p">,</span> <span class="n">qty</span><span class="p">)</span> |
| |
| |
| <span class="k">class</span> <span class="nc">RamResource</span><span class="p">(</span><span class="n">Resource</span><span class="p">):</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="n">qty</span><span class="p">):</span> |
| <span class="nb">super</span><span class="p">(</span><span class="n">RamResource</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="s1">'RAM'</span><span class="p">,</span> <span class="s1">'MB'</span><span class="p">,</span> <span class="n">qty</span><span class="p">)</span> |
| |
| |
| <span class="k">class</span> <span class="nc">DiskResource</span><span class="p">(</span><span class="n">Resource</span><span class="p">):</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="n">qty</span><span class="p">):</span> |
| <span class="nb">super</span><span class="p">(</span><span class="n">DiskResource</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="s1">'Disk'</span><span class="p">,</span> <span class="s1">'MB'</span><span class="p">,</span> <span class="n">qty</span><span class="p">)</span> |
| |
| |
| <span class="k">class</span> <span class="nc">GpuResource</span><span class="p">(</span><span class="n">Resource</span><span class="p">):</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="n">qty</span><span class="p">):</span> |
| <span class="nb">super</span><span class="p">(</span><span class="n">GpuResource</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="s1">'GPU'</span><span class="p">,</span> <span class="s1">'gpu(s)'</span><span class="p">,</span> <span class="n">qty</span><span class="p">)</span> |
| |
| |
| <div class="viewcode-block" id="Resources"><a class="viewcode-back" href="../../../_api/airflow/models/index.html#airflow.models.Resources">[docs]</a><span class="k">class</span> <span class="nc">Resources</span><span class="p">(</span><span class="nb">object</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> The resources required by an operator. Resources that are not specified will use the</span> |
| <span class="sd"> default values from the airflow config.</span> |
| |
| <span class="sd"> :param cpus: The number of cpu cores that are required</span> |
| <span class="sd"> :type cpus: long</span> |
| <span class="sd"> :param ram: The amount of RAM required</span> |
| <span class="sd"> :type ram: long</span> |
| <span class="sd"> :param disk: The amount of disk space required</span> |
| <span class="sd"> :type disk: long</span> |
| <span class="sd"> :param gpus: The number of gpu units that are required</span> |
| <span class="sd"> :type gpus: long</span> |
| <span class="sd"> """</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="n">cpus</span><span class="o">=</span><span class="n">configuration</span><span class="o">.</span><span class="n">conf</span><span class="o">.</span><span class="n">getint</span><span class="p">(</span><span class="s1">'operators'</span><span class="p">,</span> <span class="s1">'default_cpus'</span><span class="p">),</span> |
| <span class="n">ram</span><span class="o">=</span><span class="n">configuration</span><span class="o">.</span><span class="n">conf</span><span class="o">.</span><span class="n">getint</span><span class="p">(</span><span class="s1">'operators'</span><span class="p">,</span> <span class="s1">'default_ram'</span><span class="p">),</span> |
| <span class="n">disk</span><span class="o">=</span><span class="n">configuration</span><span class="o">.</span><span class="n">conf</span><span class="o">.</span><span class="n">getint</span><span class="p">(</span><span class="s1">'operators'</span><span class="p">,</span> <span class="s1">'default_disk'</span><span class="p">),</span> |
| <span class="n">gpus</span><span class="o">=</span><span class="n">configuration</span><span class="o">.</span><span class="n">conf</span><span class="o">.</span><span class="n">getint</span><span class="p">(</span><span class="s1">'operators'</span><span class="p">,</span> <span class="s1">'default_gpus'</span><span class="p">)</span> |
| <span class="p">):</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">cpus</span> <span class="o">=</span> <span class="n">CpuResource</span><span class="p">(</span><span class="n">cpus</span><span class="p">)</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">ram</span> <span class="o">=</span> <span class="n">RamResource</span><span class="p">(</span><span class="n">ram</span><span class="p">)</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">disk</span> <span class="o">=</span> <span class="n">DiskResource</span><span class="p">(</span><span class="n">disk</span><span class="p">)</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">gpus</span> <span class="o">=</span> <span class="n">GpuResource</span><span class="p">(</span><span class="n">gpus</span><span class="p">)</span> |
| |
| <span class="k">def</span> <span class="nf">__eq__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">other</span><span class="p">):</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="vm">__dict__</span> <span class="o">==</span> <span class="n">other</span><span class="o">.</span><span class="vm">__dict__</span> |
| |
| <span class="k">def</span> <span class="nf">__repr__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="k">return</span> <span class="nb">str</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="vm">__dict__</span><span class="p">)</span></div> |
| </pre></div> |
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