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readme.html
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<!doctype html>
<html>
<head>
<meta charset='UTF-8'><meta name='viewport' content='width=device-width initial-scale=1'>
<title>readme.md</title><link href='https://fonts.googleapis.com/css?family=Open+Sans:400italic,700italic,700,400&subset=latin,latin-ext' rel='stylesheet' type='text/css' /><style type='text/css'>html {overflow-x: initial !important;}#write, body { height: auto; }
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:root { --bg-color:#ffffff; --text-color:#333333; }
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blockquote { margin: 1rem 0px; }
li .mathjax-block, li p { margin: 0.5rem 0px; }
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blockquote > :last-child { margin-bottom: 0px; }
blockquote > :first-child { margin-top: 0px; }
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body, html { border: 1px solid transparent; height: 99%; break-after: avoid; break-before: avoid; }
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@page { margin: 20mm 0px; }
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p + .mathjax-block { margin-top: -1.143rem; }
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.math { font-size: 1rem; }
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.footnote-line a:not(.reversefootnote) { color: inherit; }
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code, pre, tt { font-family: var(--monospace); }
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.cm-s-inner .cm-keyword { color: rgb(119, 0, 136); }
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<div id='write' class = 'is-node'><h1><a name='header-n0' class='md-header-anchor '></a>JPL Jenkins & Python to ModelCenter Desktop Example</h1><p>Examples of how to call a ModelCenter Desktop workflow (.pxcz) from a Python script and from a Jenkins build stage.</p><p><strong>Assumptions:</strong></p><ul><li>Default install of Python at <code>C:\Python27</code></li><li>Append the location of <code>python.exe</code> to the Path environment variable (e.g., <code>C:\Python27</code>)</li><li>Python <code>comtypes</code> package installed (see below for instructions)</li><li>Python <code>pyinstaller</code> package installed (see below for instructions)</li><li>Read/Write/Execute access to Python install directory</li><li>Default install of ModelCenter Desktop</li></ul><p>Instructions for installing <code>comtypes</code> and/or <code>pyinstaller</code> using <code>pip</code>:</p><ul><li>On command line enter: <code>C:\Python27\Scripts\pip.exe install comtypes</code></li><li>On command line enter: <code>C:\Python27\Scripts\pip.exe install pyinstaller</code></li></ul><p>Also note that when the ModelCenter workflow <code>example.pxcz</code> runs it appends the date and time to a <code>log.txt</code> file in the path <code>C:\Users\Public\Documents\JPL Python MC Example\log.txt</code>, which is specified inside the workflow. The purpose of this log file is to verify that the workflow executed. </p><h2><a name='header-n38' class='md-header-anchor '></a>Python Calling ModelCenter Desktop</h2><p>Instructions for Python wrapping ModelCenter Desktop to run a workflow:</p><ul><li>Open Command Prompt</li><li>CD to directory with <code>example.py</code> and <code>example.pxcz</code> files.</li><li>Run <code>example.py</code> on command line interface</li><li>See below for example output:</li></ul><p><img src='img/ExampleCLI.PNG' alt='CLI example.py output' /></p><ul><li>Review <code>example.py</code> for seeing how the Python code <em>gets</em> and <em>sets</em> variables in a ModelCenter Desktop workflow.</li></ul><h2><a name='header-n60' class='md-header-anchor '></a>Jenkins Calling ModelCenter Desktop</h2><p>Instructions for setting up and running a ModelCenter workflow from Jenkins:</p><h3><a name='header-n63' class='md-header-anchor '></a>Example Setup Information</h3><ul><li>The Jenkins Master|head node was setup on a Linux|Debian node using <a href='https://bitnami.com/stack/jenkins/virtual-machine' target='_blank' >https://bitnami.com/stack/jenkins/virtual-machine</a> OVA VM.</li><li>A Jenkins agent|slave was setup on a Windows machine with ModelCenter Desktop installed, with the Jenkins label <code>MCD</code> (this label is used in the Jenkins Pipeline script below).</li></ul><h3><a name='header-n71' class='md-header-anchor '></a>Creating <code>runMCD.exe</code></h3><ul><li>Open Command Prompt</li><li>CD to directory with <code>runMCD.py</code> file.</li><li>Run <code>pyinstaller -F runMCD.py</code></li><li>Find <code>runMCD.exe</code> in <code>dist</code> folder.</li></ul><h3><a name='header-n85' class='md-header-anchor '></a>Creating Jenkins Stage</h3><ul><li>Put <code>runMCD.exe</code> and <code>example.pxcz</code> in a directory accessible by Jenkins (e.g., <code>C:\Users\Public\Documents\JPL Python MC Example\</code>) on the MCD Jenkins agent|slave</li><li>Create a Jenkins pipeline job using <code>Pipeline script</code> (see image below)</li><li>Include the following in the <em>script</em> field:</li></ul><pre class="md-fences md-end-block" lang="javascript"> <div class="CodeMirror cm-s-inner CodeMirror-wrap"><div style="overflow: hidden; position: relative; width: 3px; height: 0px; top: 4px; left: 4px;"></div><div class="CodeMirror-scrollbar-filler" cm-not-content="true"></div><div class="CodeMirror-gutter-filler" cm-not-content="true"></div><div class="CodeMirror-scroll" tabindex="-1"><div class="CodeMirror-sizer" style="margin-left: 0px; margin-bottom: 0px; border-right-width: 30px; padding-right: 0px; padding-bottom: 0px;"><div style="position: relative; top: 0px;"><div class="CodeMirror-lines" role="presentation"><div role="presentation" style="position: relative; outline: none;"><div class="CodeMirror-measure"></div><div class="CodeMirror-measure"></div><div style="position: relative; z-index: 1;"></div><div class="CodeMirror-code" role="presentation"><div class="CodeMirror-activeline" style="position: relative;"><div class="CodeMirror-activeline-background CodeMirror-linebackground"></div><div class="CodeMirror-gutter-background CodeMirror-activeline-gutter" style="left: 0px; width: 0px;"></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-variable">node</span> (<span class="cm-variable">label</span>: <span class="cm-string">'MCD'</span>) {</span></pre></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-tab" role="presentation" cm-text=" "> </span><span class="cm-variable">stage</span>(<span class="cm-string">'Build'</span>) {</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-tab" role="presentation" cm-text=" "> </span><span class="cm-tab" role="presentation" cm-text=" "> </span><span class="cm-variable">bat</span>(<span class="cm-string-2">/"C:\Users\Public\Documents\JPL Python MC Example\runMCD.exe" "C:\Users\Public\Documents\JPL Python MC Example\example.pxcz" /</span>)</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-tab" role="presentation" cm-text=" "> </span><span class="cm-tab" role="presentation" cm-text=" "> </span><span class="cm-variable">bat</span>(<span class="cm-string-2">/echo %DATE% %TIME%/</span>)</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-tab" role="presentation" cm-text=" "> </span>}</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">}</span></pre></div></div></div></div></div><div style="position: absolute; height: 30px; width: 1px; border-bottom: 0px solid transparent; top: 173px;"></div><div class="CodeMirror-gutters" style="display: none; height: 203px;"></div></div></div></pre><ul><li>In the Pipeline script, ensure that the path for <code>runMCD.exe</code> and the <code>.pxcz</code> file are updated to reflect their location on the Jenkins agent</li><li>See below for image of Pipeline definition:</li></ul><p><img src='img/PipelineScript3.PNG' alt='Pipeline script stage' /></p><h3><a name='header-n106' class='md-header-anchor '></a>Jenkins Results</h3><ul><li>After running the job the expected Blue Ocean result would look like the following:</li></ul><p><img src='img/Blue3.PNG' alt='Jenkins Blue Ocean Results' /></p><p><dl>
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