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<title>Lab 5 - From Zero to Pushing Your First Application</title>
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</head>
<body class="article">
<div id="header">
<h1>Lab 5 - From Zero to Pushing Your First Application</h1>
</div>
<div id="content">
<div class="sect1">
<h2 id="_setup">Setup</h2>
<div class="sectionbody">
<div class="olist arabic">
<ol class="arabic">
<li>
<p>If you are on a network that requires a proxy, set the proxy as an environment variable:</p>
<div class="listingblock">
<div class="content">
<pre>export HTTP_PROXY={HTTP_PROXY}</pre>
</div>
</div>
</li>
<li>
<p>Set the API target for the CLI:</p>
<div class="listingblock">
<div class="content">
<pre>$ cf api {CF-API-URL} --skip-ssl-validation</pre>
</div>
</div>
</li>
<li>
<p>Your username will be first initial + lastname. Password will be provided in the class.</p>
</li>
<li>
<p>Follow the steps above for login.</p>
</li>
<li>
<p>Create your own space and target that space:</p>
</li>
</ol>
</div>
<div class="listingblock">
<div class="content">
<pre>$ cf create-space <your_username>
$ cf target -s <your_username></pre>
</div>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_build_and_push">Build and Push!</h2>
<div class="sectionbody">
<div class="olist arabic">
<ol class="arabic">
<li>
<p>Change to the <em>Spring Music</em> sample application directory:</p>
<div class="listingblock">
<div class="content">
<pre>$ cd $COURSE_HOME/day_01/session_02/lab_05/spring-music</pre>
</div>
</div>
</li>
<li>
<p>If you are on a network that is behind an HTTP proxy, you will need to provide some proxy settings to the Gradle build tool so it can download dependencies. In your user home directory, create a directory named <code>.gradle</code> and a file named <code>gradle.properties</code> in that directory (e.g. <code>~/.gradle/gradle.properties</code> on Linux/OSX or <code>%USERPROFILE%\.gradle\gradle.properties</code> on Windows). Add lines like these to that file, with the address and credentials for your HTTP proxy:</p>
<div class="listingblock">
<div class="content">
<pre>systemProp.http.proxyHost=www.example.com
systemProp.http.proxyPort=8080
systemProp.http.proxyUser=userid
systemProp.http.proxyPassword=password
systemProp.https.proxyHost=www.example.com
systemProp.https.proxyPort=8080
systemProp.https.proxyUser=userid
systemProp.https.proxyPassword=password</pre>
</div>
</div>
</li>
<li>
<p>Using the Gradle Wrapper, build and package the application:</p>
<div class="listingblock">
<div class="content">
<pre>$ ./gradlew assemble</pre>
</div>
</div>
<div class="paragraph">
<p>The Gradle Wrapper will automatically download the appropriate version of Gradle for this project along with all of <em>Spring Music</em>'s dependencies. This may take a few moments.</p>
</div>
</li>
<li>
<p>Push the application!</p>
<div class="listingblock">
<div class="content">
<pre>$ cf push</pre>
</div>
</div>
<div class="paragraph">
<p>You should see output similar to the following listing. Take a look at the listing callouts for a play-by-play of what’s happening:</p>
</div>
<div class="exampleblock">
<div class="content">
<div class="listingblock">
<div class="content">
<pre>Using manifest file /Users/pivotal/mstine/2015/OReilly/CloudNativeArchitectureClass/day_01/session_02/lab_05/spring-music/manifest.yml <b class="conum">(1)</b>
Creating app spring-music in org oreilly-class / space instructor as [email protected]...
OK <b class="conum">(2)</b>
Creating route spring-music-hippest-shaman.cfapps.io...
OK <b class="conum">(3)</b>
Binding spring-music-hippest-shaman.cfapps.io to spring-music...
OK <b class="conum">(4)</b>
Uploading spring-music... <b class="conum">(5)</b>
Uploading app files from: /Users/pivotal/mstine/2015/OReilly/CloudNativeArchitectureClass/day_01/session_02/lab_05/spring-music/build/libs/spring-music.war
Uploading 569.7K, 90 files
Done uploading
OK
Starting app spring-music in org oreilly-class / space instructor as [email protected]... <b class="conum">(6)</b>
-----> Downloaded app package (21M)
-----> Java Buildpack Version: v2.6.1 | https://github.com/cloudfoundry/java-buildpack.git#2d92e70
-----> Downloading Open Jdk JRE 1.8.0_31 from https://download.run.pivotal.io/openjdk/lucid/x86_64/openjdk-1.8.0_31.tar.gz (1.3s)
Expanding Open Jdk JRE to .java-buildpack/open_jdk_jre (1.2s) <b class="conum">(7)</b>
-----> Downloading Spring Auto Reconfiguration 1.7.0_RELEASE from https://download.run.pivotal.io/auto-reconfiguration/auto-reconfiguration-1.7.0_RELEASE.jar (0.1s)
-----> Downloading Tomcat Instance 8.0.18 from https://download.run.pivotal.io/tomcat/tomcat-8.0.18.tar.gz (0.4s)
Expanding Tomcat to .java-buildpack/tomcat (0.1s) <b class="conum">(8)</b>
-----> Downloading Tomcat Lifecycle Support 2.4.0_RELEASE from https://download.run.pivotal.io/tomcat-lifecycle-support/tomcat-lifecycle-support-2.4.0_RELEASE.jar (0.0s)
-----> Downloading Tomcat Logging Support 2.4.0_RELEASE from https://download.run.pivotal.io/tomcat-logging-support/tomcat-logging-support-2.4.0_RELEASE.jar (0.0s)
-----> Downloading Tomcat Access Logging Support 2.4.0_RELEASE from https://download.run.pivotal.io/tomcat-access-logging-support/tomcat-access-logging-support-2.4.0_RELEASE.jar (0.0s)
-----> Uploading droplet (66M) <b class="conum">(9)</b>
0 of 1 instances running, 1 starting
1 of 1 instances running
App started
OK
App spring-music was started using this command `JAVA_HOME=$PWD/.java-buildpack/open_jdk_jre JAVA_OPTS="-Djava.io.tmpdir=$TMPDIR -XX:OnOutOfMemoryError=$PWD/.java-buildpack/open_jdk_jre/bin/killjava.sh -Xmx382293K -Xms382293K -XX:MaxMetaspaceSize=64M -XX:MetaspaceSize=64M -Xss995K -Daccess.logging.enabled=false -Dhttp.port=$PORT" $PWD/.java-buildpack/tomcat/bin/catalina.sh run` <b class="conum">(10)</b>
Showing health and status for app spring-music in org oreilly-class / space instructor as [email protected]... <b class="conum">(11)</b>
OK
requested state: started
instances: 1/1
usage: 512M x 1 instances
urls: spring-music-hippest-shaman.cfapps.io
last uploaded: Fri Feb 13 15:43:08 UTC 2015
state since cpu memory disk
#0 running 2015-02-13 09:43:55 AM 0.0% 394.5M of 512M 131.1M of 1G</pre>
</div>
</div>
<div class="colist arabic">
<ol>
<li>
<p>The CLI is using a manifest to provide necessary configuration details such as application name, memory to be allocated, and path to the application artifact.
Take a look at <code>manifest.yml</code> to see how.</p>
</li>
<li>
<p>In most cases, the CLI indicates each Cloud Foundry API call as it happens.
In this case, the CLI has created an application record for <em>Spring Music</em> in your assigned space.</p>
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<p>All HTTP/HTTPS requests to applications will flow through Cloud Foundry’s front-end router called <a href="http://docs.cloudfoundry.org/concepts/architecture/router.html">(Go)Router</a>.
Here the CLI is creating a route with random word tokens inserted (again, see <code>manifest.yml</code> for a hint!) to prevent route collisions across the default <code>cfapps.io</code> domain.</p>
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<p>Now the CLI is <em>binding</em> the created route to the application.
Routes can actually be bound to multiple applications to support techniques such as <a href="http://www.mattstine.com/2013/07/10/blue-green-deployments-on-cloudfoundry">blue-green deployments</a>.</p>
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<p>The CLI finally uploads the application bits to PWS. Notice that it’s uploading <em>90 files</em>! This is because Cloud Foundry actually explodes a ZIP artifact before uploading it for caching purposes.</p>
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<p>Now we begin the staging process. The <a href="https://github.com/cloudfoundry/java-buildpack">Java Buildpack</a> is responsible for assembling the runtime components necessary to run the application.</p>
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<p>Here we see the version of the JRE that has been chosen and installed.</p>
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<p>And here we see the version of Tomcat that has been chosen and installed.</p>
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<p>The complete package of your application and all of its necessary runtime components is called a <em>droplet</em>.
Here the droplet is being uploaded to PWS’s internal blobstore so that it can be easily copied to one or more <em><a href="http://docs.cloudfoundry.org/concepts/architecture/execution-agent.html">Droplet Execution Agents (DEA’s)</a></em> for execution.</p>
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<p>The CLI tells you exactly what command and argument set was used to start your application.</p>
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<p>Finally the CLI reports the current status of your application’s health.
You can get the same output at any time by typing <code>cf app spring-music</code>.</p>
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<p>Visit the application in your browser by hitting the route that was generated by the CLI:</p>
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<img src="../../../Common/images/Spring_Music_NS.png" alt="Spring Music NS">
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<p>Be sure to click on the ``information icon'' in the top right-hand corner of the UI.
This gives you important information about the state of the currently running <em>Spring Music</em> instance, including what Spring Profiles are turned on and what Cloud Foundry services are bound.
It will become important in the next lab!</p>
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Last updated 2015-06-13 21:39:21 EDT
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