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PivotalLabsAndSamples/student-lab-instructions/04-spring-boot-features.html

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  207. .exampleblock>.content>:last-child{margin-bottom:0}

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  210. .sidebarblock>:last-child{margin-bottom:0}

  211. .sidebarblock>.content>.title{color:#7a2518;margin-top:0;text-align:center}

  212. .exampleblock>.content>:last-child>:last-child,.exampleblock>.content .olist>ol>li:last-child>:last-child,.exampleblock>.content .ulist>ul>li:last-child>:last-child,.exampleblock>.content .qlist>ol>li:last-child>:last-child,.sidebarblock>.content>:last-child>:last-child,.sidebarblock>.content .olist>ol>li:last-child>:last-child,.sidebarblock>.content .ulist>ul>li:last-child>:last-child,.sidebarblock>.content .qlist>ol>li:last-child>:last-child{margin-bottom:0}

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  221. .listingblock pre.highlightjs>code{padding:1em;-webkit-border-radius:4px;border-radius:4px}

  222. .listingblock pre.prettyprint{border-width:0}

  223. .listingblock>.content{position:relative}

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  225. .listingblock:hover code[data-lang]:before{display:block}

  226. .listingblock.terminal pre .command:before{content:attr(data-prompt);padding-right:.5em;color:#999}

  227. .listingblock.terminal pre .command:not([data-prompt]):before{content:"$"}

  228. table.pyhltable{border-collapse:separate;border:0;margin-bottom:0;background:none}

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  235. .quoteblock>.title{margin-left:-1.5em;margin-bottom:.75em}

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  238. .quoteblock blockquote:before{content:"\201c";float:left;font-size:2.75em;font-weight:bold;line-height:.6em;margin-left:-.6em;color:#7a2518;text-shadow:0 1px 2px rgba(0,0,0,.1)}

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  241. .quoteblock .quoteblock{margin-left:0;margin-right:0;padding:.5em 0;border-left:3px solid rgba(0,0,0,.6)}

  242. .quoteblock .quoteblock blockquote{padding:0 0 0 .75em}

  243. .quoteblock .quoteblock blockquote:before{display:none}

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  245. .verseblock pre{font-family:"Open Sans","DejaVu Sans",sans;font-size:1.15rem;color:rgba(0,0,0,.85);font-weight:300;text-rendering:optimizeLegibility}

  246. .verseblock pre strong{font-weight:400}

  247. .verseblock .attribution{margin-top:1.25rem;margin-left:.5ex}

  248. .quoteblock .attribution,.verseblock .attribution{font-size:.9375em;line-height:1.45;font-style:italic}

  249. .quoteblock .attribution br,.verseblock .attribution br{display:none}

  250. .quoteblock .attribution cite,.verseblock .attribution cite{display:block;letter-spacing:-.025em;color:rgba(0,0,0,.6)}

  251. .quoteblock.abstract{margin:0 0 1.25em 0;display:block}

  252. .quoteblock.abstract blockquote,.quoteblock.abstract blockquote p{text-align:left;word-spacing:0}

  253. .quoteblock.abstract blockquote:before,.quoteblock.abstract blockquote p:first-of-type:before{display:none}

  254. table.tableblock{max-width:100%;border-collapse:separate}

  255. table.tableblock td>.paragraph:last-child p>p:last-child,table.tableblock th>p:last-child,table.tableblock td>p:last-child{margin-bottom:0}

  256. table.tableblock,th.tableblock,td.tableblock{border:0 solid #dedede}

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  259. table.grid-cols th.tableblock,table.grid-cols td.tableblock{border-width:0 1px 0 0}

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  261. table.grid-rows th.tableblock,table.grid-rows td.tableblock{border-width:0 0 1px 0}

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  264. table.frame-all{border-width:1px}

  265. table.frame-sides{border-width:0 1px}

  266. table.frame-topbot{border-width:1px 0}

  267. th.halign-left,td.halign-left{text-align:left}

  268. th.halign-right,td.halign-right{text-align:right}

  269. th.halign-center,td.halign-center{text-align:center}

  270. th.valign-top,td.valign-top{vertical-align:top}

  271. th.valign-bottom,td.valign-bottom{vertical-align:bottom}

  272. th.valign-middle,td.valign-middle{vertical-align:middle}

  273. table thead th,table tfoot th{font-weight:bold}

  274. tbody tr th{display:table-cell;line-height:1.6;background:#f7f8f7}

  275. tbody tr th,tbody tr th p,tfoot tr th,tfoot tr th p{color:rgba(0,0,0,.8);font-weight:bold}

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  277. p.tableblock{font-size:1em}

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  281. dl dd{margin-left:1.125em}

  282. dl dd:last-child,dl dd:last-child>:last-child{margin-bottom:0}

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  285. ul.unstyled,ol.unnumbered,ul.checklist{margin-left:.625em}

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  290. ul.inline>li>*{display:block}

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  295. ol.upperalpha{list-style-type:upper-alpha}

  296. ol.lowerroman{list-style-type:lower-roman}

  297. ol.upperroman{list-style-type:upper-roman}

  298. ol.lowergreek{list-style-type:lower-greek}

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  300. .hdlist>table>tbody>tr,.colist>table>tbody>tr{background:none}

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  302. td.hdlist1{font-weight:bold;padding-bottom:1.25em}

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  313. .image.left{margin-right:.625em}

  314. .image.right{margin-left:.625em}

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  319. sup.footnote a:active,sup.footnoteref a:active{text-decoration:underline}

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  327. .gist .file-data>table td.line-data{width:99%}

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  329. .big{font-size:larger}

  330. .small{font-size:smaller}

  331. .underline{text-decoration:underline}

  332. .overline{text-decoration:overline}

  333. .line-through{text-decoration:line-through}

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  336. .black{color:#000}

  337. .black-background{background-color:#000}

  338. .blue{color:#0000bf}

  339. .blue-background{background-color:#0000fa}

  340. .fuchsia{color:#bf00bf}

  341. .fuchsia-background{background-color:#fa00fa}

  342. .gray{color:#606060}

  343. .gray-background{background-color:#7d7d7d}

  344. .green{color:#006000}

  345. .green-background{background-color:#007d00}

  346. .lime{color:#00bf00}

  347. .lime-background{background-color:#00fa00}

  348. .maroon{color:#600000}

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  354. .purple{color:#600060}

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  357. .red-background{background-color:#fa0000}

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  368. .admonitionblock td.icon .icon-note:before{content:"\f05a";color:#19407c}

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  370. .admonitionblock td.icon .icon-warning:before{content:"\f071";color:#bf6900}

  371. .admonitionblock td.icon .icon-caution:before{content:"\f06d";color:#bf3400}

  372. .admonitionblock td.icon .icon-important:before{content:"\f06a";color:#bf0000}

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  376. .conum[data-value]:after{content:attr(data-value)}

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  379. .conum:not([data-value]):empty{display:none}

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  381. h1,h2,p,td.content,span.alt{letter-spacing:-.01em}

  382. p strong,td.content strong,div.footnote strong{letter-spacing:-.005em}

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  384. p{margin-bottom:1.25rem}

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  387. .print-only{display:none!important}

  388. @media print{@page{margin:1.25cm .75cm}

  389. *{-webkit-box-shadow:none!important;box-shadow:none!important;text-shadow:none!important}

  390. a{color:inherit!important;text-decoration:underline!important}

  391. a.bare,a[href^="#"],a[href^="mailto:"]{text-decoration:none!important}

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  393. abbr[title]:after{content:" (" attr(title) ")"}

  394. pre,blockquote,tr,img,object,svg{page-break-inside:avoid}

  395. thead{display:table-header-group}

  396. svg{max-width:100%}

  397. p,blockquote,dt,td.content{font-size:1em;orphans:3;widows:3}

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  400. #toc{border-bottom:1px solid #ddddd8!important;padding-bottom:0!important}

  401. .sect1{padding-bottom:0!important}

  402. .sect1+.sect1{border:0!important}

  403. #header>h1:first-child{margin-top:1.25rem}

  404. body.book #header{text-align:center}

  405. body.book #header>h1:first-child{border:0!important;margin:2.5em 0 1em 0}

  406. body.book #header .details{border:0!important;display:block;padding:0!important}

  407. body.book #header .details span:first-child{margin-left:0!important}

  408. body.book #header .details br{display:block}

  409. body.book #header .details br+span:before{content:none!important}

  410. body.book #toc{border:0!important;text-align:left!important;padding:0!important;margin:0!important}

  411. body.book #toc,body.book #preamble,body.book h1.sect0,body.book .sect1>h2{page-break-before:always}

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  416. .print-only{display:block!important}

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  425. .CodeRay .line-numbers strong{color:rgba(0,0,0,.4)}

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  539. 

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  541.         font-size:2.0625rem;

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  555. 

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  557.             $(this).tooltip('hide');

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  570. 

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  572. </head>

  573. <body class="article toc2 toc-left">

  574. <div id="header">

  575. <h1><a id="spring-boot-features"></a>Spring Boot Features</h1>

  576. <div id="toc" class="toc2">

  577. <div id="toctitle">Labs</div>

  578. <ul class="sectlevel1">

  579. <li><a href="#_directory_web_features">Directory Web Features</a>

  580. <ul class="sectlevel2">

  581. <li><a href="#_springbootapplication_banner_and_web_environment">SpringBootApplication: Banner and Web Environment</a></li>

  582. <li><a href="#_springbootapplication_commandlinerunner_applicationrunner">SpringBootApplication: CommandLineRunner / ApplicationRunner</a></li>

  583. <li><a href="#_springbootapplication_external_configuration">SpringBootApplication: External Configuration</a></li>

  584. <li><a href="#__homework">[HOMEWORK]</a></li>

  585. </ul>

  586. </li>

  587. </ul>

  588. </div>

  589. </div>

  590. <div id="content">

  591. <div id="preamble">

  592. <div class="sectionbody">

  593. <div class="paragraph">

  594. <p>Get familiar with the main Spring Boot features.</p>

  595. </div>

  596. <div class="paragraph">

  597. <p><strong>Time:</strong> 25 minutes.</p>

  598. </div>

  599. <!-- toc disabled -->

  600. </div>

  601. </div>

  602. <div class="sect1">

  603. <h2 id="_directory_web_features">Directory Web Features</h2>

  604. <div class="sectionbody">

  605. <div class="paragraph">

  606. <p>This lab will show you how to use some of the Spring Boot features. You are going to use the code from previous labs (<strong>directory-web-internals</strong> project)</p>

  607. </div>

  608. <div class="olist arabic">

  609. <ol class="arabic">

  610. <li>

  611. <p>Open a browser and hit the url: <a href="http://start.spring.io" class="bare" target="_blank">http://start.spring.io</a></p>

  612. </li>

  613. <li>

  614. <p>Click the <strong><em>Switch to the full version</em></strong> link.</p>

  615. </li>

  616. <li>

  617. <p>Fill out the Directory Web App Project metadata with (See Figure 1):</p>

  618. <table class="tableblock frame-all grid-all spread">

  619. <caption class="title">Table 1. Directory Web App - metadata</caption>

  620. <colgroup>

  621. <col style="width: 16.6666%;">

  622. <col style="width: 83.3334%;">

  623. </colgroup>

  624. <thead>

  625. <tr>

  626. <th class="tableblock halign-left valign-top">Property</th>

  627. <th class="tableblock halign-left valign-top">Value</th>

  628. </tr>

  629. </thead>

  630. <tbody>

  631. <tr>

  632. <td class="tableblock halign-left valign-top"><p class="tableblock"><strong>Group</strong>:</p></td>

  633. <td class="tableblock halign-left valign-top"><p class="tableblock"><em>io.pivotal.workshop</em></p></td>

  634. </tr>

  635. <tr>

  636. <td class="tableblock halign-left valign-top"><p class="tableblock"><strong>Artifact</strong>:</p></td>

  637. <td class="tableblock halign-left valign-top"><p class="tableblock"><em>directory-web-features</em></p></td>

  638. </tr>

  639. <tr>

  640. <td class="tableblock halign-left valign-top"><p class="tableblock"><strong>Name</strong>:</p></td>

  641. <td class="tableblock halign-left valign-top"><p class="tableblock"><em>directory-web-features</em></p></td>

  642. </tr>

  643. <tr>

  644. <td class="tableblock halign-left valign-top"><p class="tableblock"><strong>Package Name</strong>:</p></td>

  645. <td class="tableblock halign-left valign-top"><p class="tableblock"><em>io.pivotal.workshop.directory</em></p></td>

  646. </tr>

  647. <tr>

  648. <td class="tableblock halign-left valign-top"><p class="tableblock"><strong>Dependencies</strong>:</p></td>

  649. <td class="tableblock halign-left valign-top"><p class="tableblock"><em>Web, AOP</em></p></td>

  650. </tr>

  651. <tr>

  652. <td class="tableblock halign-left valign-top"><p class="tableblock"><strong>Spring Boot</strong>:</p></td>

  653. <td class="tableblock halign-left valign-top"><p class="tableblock"><em>2.0.0.M7</em></p></td>

  654. </tr>

  655. </tbody>

  656. </table>

  657. <div class="paragraph">

  658. <div class="title">Figure 1: Spring Initializr - <a href="http://start.spring.io" class="bare" target="_blank">http://start.spring.io</a></div>

  659. <p><span class="image"><img src="images/04-spring-boot-features-01.png" alt="SpringInitializr" title="Spring Initializr"></span></p>

  660. </div>

  661. <div class="admonitionblock tip">

  662. <table>

  663. <tr>

  664. <td class="icon">

  665. <div class="title">Tip</div>

  666. </td>

  667. <td class="content">

  668. You can choose either <strong>Maven</strong> or <strong>Gradle</strong> project types.

  669. </td>

  670. </tr>

  671. </table>

  672. </div>

  673. </li>

  674. <li>

  675. <p>Type <strong>Web</strong> and <strong>AOP</strong> in the <strong><em>Dependencies</em></strong> field and press Enter.</p>

  676. </li>

  677. <li>

  678. <p>Click the <strong><em>Generate Project</em></strong> button.</p>

  679. </li>

  680. <li>

  681. <p>Unzip the file in any directory you want.</p>

  682. </li>

  683. <li>

  684. <p>Import your project in any IDE you want.</p>

  685. </li>

  686. <li>

  687. <p>You can <strong><em>copy all the code</em></strong> from the previous lab (we are going to use it).</p>

  688. </li>

  689. </ol>

  690. </div>

  691. <div class="sect2">

  692. <h3 id="_springbootapplication_banner_and_web_environment">SpringBootApplication: Banner and Web Environment</h3>

  693. <div class="paragraph">

  694. <p>Let&#8217;s start with the <strong>SpringBootApplication</strong> class. In the main source code: <strong>DirectoryWebFeaturesApplication</strong> class, add the following code:</p>

  695. </div>

  696. <div class="listingblock">

  697. <div class="title">io.pivotal.workshop.directory.DirectoryWebFeaturesApplication.java</div>

  698. <div class="content">

  699. <pre class="CodeRay highlight"><code data-lang="java"><span class="keyword">package</span> <span class="namespace">io.pivotal.workshop.directory</span>;

  700. 

  701. <span class="keyword">import</span> <span class="include">org.springframework.boot.SpringApplication</span>;

  702. <span class="keyword">import</span> <span class="include">org.springframework.boot.autoconfigure.SpringBootApplication</span>;

  703. 

  704. <span class="annotation">@SpringBootApplication</span>

  705. <span class="directive">public</span> <span class="type">class</span> <span class="class">DirectoryWebFeaturesApplication</span> {

  706. 

  707.         <span class="directive">public</span> <span class="directive">static</span> <span class="type">void</span> main(<span class="predefined-type">String</span><span class="type">[]</span> args) {

  708. 

  709.                 SpringApplication app = <span class="keyword">new</span> SpringApplication(DirectoryWebFeaturesApplication.class);

  710.                 app.run(args);

  711.         }

  712. }</code></pre>

  713. </div>

  714. </div>

  715. <div class="paragraph">

  716. <p>the <strong>SpringApplication</strong> will be use to turn on/off some features.</p>

  717. </div>

  718. <div class="sect3">

  719. <h4 id="_challenges">Challenges</h4>

  720. <div class="ulist">

  721. <ul>

  722. <li>

  723. <p>Add a <strong>banner.txt</strong> with some <strong>ASCII ART</strong> in the <strong>src/main/resources</strong> folder and run the application. You can choose some ascii art from: <a href="http://patorjk.com/software/taag" class="bare" target="_blank">http://patorjk.com/software/taag</a></p>

  724. </li>

  725. <li>

  726. <p>Turn off the Banner using the <strong>app</strong> instance.</p>

  727. </li>

  728. <li>

  729. <p>Turn off the Web Environment using the <strong>app</strong> instance.</p>

  730. </li>

  731. <li>

  732. <p>You can turn on/off the Banner and Web Environment using the <strong>application.properties</strong>, find out how.</p>

  733. </li>

  734. </ul>

  735. </div>

  736. </div>

  737. </div>

  738. <div class="sect2">

  739. <h3 id="_springbootapplication_commandlinerunner_applicationrunner">SpringBootApplication: CommandLineRunner / ApplicationRunner</h3>

  740. <div class="paragraph">

  741. <p>In the main source code: <strong>DirectoryWebFeaturesApplication</strong> class, replace the class definition with the following code:</p>

  742. </div>

  743. <div class="listingblock">

  744. <div class="title">io.pivotal.workshop.directory.DirectoryWebFeaturesApplication.java</div>

  745. <div class="content">

  746. <pre class="CodeRay highlight"><code data-lang="java"><span class="keyword">package</span> <span class="namespace">io.pivotal.workshop.directory</span>;

  747. 

  748. <span class="keyword">import</span> <span class="include">java.util.stream.Stream</span>;

  749. 

  750. <span class="keyword">import</span> <span class="include">org.slf4j.Logger</span>;

  751. <span class="keyword">import</span> <span class="include">org.slf4j.LoggerFactory</span>;

  752. 

  753. <span class="keyword">import</span> <span class="include">org.springframework.boot.CommandLineRunner</span>;

  754. <span class="keyword">import</span> <span class="include">org.springframework.boot.SpringApplication</span>;

  755. <span class="keyword">import</span> <span class="include">org.springframework.boot.autoconfigure.SpringBootApplication</span>;

  756. <span class="keyword">import</span> <span class="include">org.springframework.context.annotation.Bean</span>;

  757. 

  758. <span class="annotation">@SpringBootApplication</span>

  759. <span class="directive">public</span> <span class="type">class</span> <span class="class">DirectoryWebFeaturesApplication</span> {

  760. 

  761.         <span class="directive">public</span> <span class="directive">static</span> <span class="type">void</span> main(<span class="predefined-type">String</span><span class="type">[]</span> args) {

  762. 

  763.                 SpringApplication app = <span class="keyword">new</span> SpringApplication(DirectoryWebFeaturesApplication.class);

  764.                 app.run(args);

  765.         }

  766. 

  767.     <span class="directive">private</span> <span class="directive">static</span> <span class="directive">final</span> <span class="predefined-type">Logger</span> log = LoggerFactory.getLogger(<span class="string"><span class="delimiter">&quot;</span><span class="content">[ARGUMENTS]</span><span class="delimiter">&quot;</span></span>);

  768. 

  769.     <span class="annotation">@Bean</span>

  770.         <span class="directive">public</span> CommandLineRunner commandRunner() {

  771.                 <span class="keyword">return</span> args -&gt; {

  772.                         Stream.of(args).forEach(s -&gt; {

  773.                                 log.info(<span class="string"><span class="delimiter">&quot;</span><span class="content">CommandLine: </span><span class="delimiter">&quot;</span></span> + s);

  774.                         });

  775.                 };

  776.         }

  777. }</code></pre>

  778. </div>

  779. </div>

  780. <div class="paragraph">

  781. <p>the <strong>CommandLineRunner</strong> is use to execute code before your Spring Boot application start. The previous code will log all the arguments passed to the application.</p>

  782. </div>

  783. <div class="paragraph">

  784. <p>Package and run the application with the following arguments: <strong><em>--option=A,B,C --enable-audit=yes</em></strong></p>

  785. </div>

  786. <div class="paragraph">

  787. <p>+

  788. .create the JAR</p>

  789. </div>

  790. <div class="listingblock">

  791. <div class="content">

  792. <pre class="CodeRay highlight"><code data-lang="bash">./mvnw clean package -DskipTests=true</code></pre>

  793. </div>

  794. </div>

  795. <div class="paragraph">

  796. <p>+

  797. .run the application with some arguments</p>

  798. </div>

  799. <div class="listingblock">

  800. <div class="content">

  801. <pre class="CodeRay highlight"><code data-lang="bash">java -jar target/directory-web-features-0.0.1-SNAPSHOT.jar --option=A,B,C --enable-audit=yes</code></pre>

  802. </div>

  803. </div>

  804. <div class="paragraph">

  805. <p>see the logs.</p>

  806. </div>

  807. <div class="sect3">

  808. <h4 id="_challenges_2">Challenges</h4>

  809. <div class="ulist">

  810. <ul>

  811. <li>

  812. <p>Use now the <strong>ApplicationRunner</strong> and get the <strong>option</strong> and <strong>enable-audit</strong> values, you should log something similar:</p>

  813. <div class="listingblock">

  814. <div class="content">

  815. <pre class="CodeRay highlight"><code data-lang="bash">[ARGS]  : Option Name: enable-audit

  816. [ARGS]  : Option Name: option

  817. [ARGS]  : Found Value:[A,B,C]

  818. [ARGS]  : Found Value:[yes]

  819. [ARGS]  : Argument: --option=A,B,C

  820. [ARGS]  : Argument: --enable-audit=yes</code></pre>

  821. </div>

  822. </div>

  823. </li>

  824. </ul>

  825. </div>

  826. </div>

  827. </div>

  828. <div class="sect2">

  829. <h3 id="_springbootapplication_external_configuration">SpringBootApplication: External Configuration</h3>

  830. <div class="paragraph">

  831. <p>If you didn&#8217;t finish the previous lab (<strong>directory-web-internals</strong>) this is you chance! Create a <strong>DirectoryProperties</strong> class that will hold the information about <strong>audit</strong> (<strong><em>on/off</em></strong>) and the <strong>info</strong> to be display (<strong><em>long/short</em></strong>) for the <strong>AOP</strong> audit.</p>

  832. </div>

  833. <div class="paragraph">

  834. <p>Here you will use the <strong>@ConfigurationProperties</strong> annotation to enable a properties binding, you will use the <strong>prefix</strong> <strong><em>directory</em></strong>.</p>

  835. </div>

  836. <div class="listingblock">

  837. <div class="title">io.pivotal.workshop.directory.config.DirectoryProperties.java</div>

  838. <div class="content">

  839. <pre class="CodeRay highlight"><code data-lang="java"><span class="keyword">package</span> <span class="namespace">io.pivotal.workshop.directory.config</span>;

  840. 

  841. <span class="keyword">import</span> <span class="include">org.springframework.boot.context.properties.ConfigurationProperties</span>;

  842. 

  843. <span class="annotation">@ConfigurationProperties</span>(prefix = <span class="string"><span class="delimiter">&quot;</span><span class="content">directory</span><span class="delimiter">&quot;</span></span>)

  844. <span class="directive">public</span> <span class="type">class</span> <span class="class">DirectoryProperties</span> {

  845. 

  846.         <span class="directive">private</span> <span class="predefined-type">String</span> audit = <span class="string"><span class="delimiter">&quot;</span><span class="content">off</span><span class="delimiter">&quot;</span></span>;

  847.         <span class="directive">private</span> <span class="predefined-type">String</span> info = <span class="string"><span class="delimiter">&quot;</span><span class="content">long</span><span class="delimiter">&quot;</span></span>;

  848. 

  849.         <span class="directive">public</span> <span class="predefined-type">String</span> getAudit() {

  850.                 <span class="keyword">return</span> audit;

  851.         }

  852. 

  853.         <span class="directive">public</span> <span class="type">void</span> setAudit(<span class="predefined-type">String</span> audit) {

  854.                 <span class="local-variable">this</span>.audit = audit;

  855.         }

  856. 

  857.         <span class="directive">public</span> <span class="predefined-type">String</span> getInfo() {

  858.                 <span class="keyword">return</span> info;

  859.         }

  860. 

  861.         <span class="directive">public</span> <span class="type">void</span> setInfo(<span class="predefined-type">String</span> info) {

  862.                 <span class="local-variable">this</span>.info = info;

  863.         }

  864. 

  865. }</code></pre>

  866. </div>

  867. </div>

  868. <div class="paragraph">

  869. <p>Modify the <strong>application.properties</strong> by adding the new properties:</p>

  870. </div>

  871. <div class="listingblock">

  872. <div class="title">src/main/resource/application.properties</div>

  873. <div class="content">

  874. <pre class="CodeRay highlight"><code data-lang="properties">directory.audit=on

  875. directory.info=short</code></pre>

  876. </div>

  877. </div>

  878. <div class="paragraph">

  879. <p>Create the aspect <strong>DirectoryAudit</strong> and read the values to audit the method <strong>findByEmail</strong> from the <strong>DirectoryRepository</strong> class. (This is the challenge from the <strong><em>directory-web-internals</em></strong> lab).</p>

  880. </div>

  881. <div class="listingblock">

  882. <div class="title">io.pivotal.workshop.directory.aop.DirectoryAudit.java</div>

  883. <div class="content">

  884. <pre class="CodeRay highlight"><code data-lang="java"><span class="keyword">package</span> <span class="namespace">io.pivotal.workshop.directory.aop</span>;

  885. 

  886. <span class="keyword">import</span> <span class="include">java.util.stream.IntStream</span>;

  887. 

  888. <span class="keyword">import</span> <span class="include">org.aspectj.lang.ProceedingJoinPoint</span>;

  889. <span class="keyword">import</span> <span class="include">org.aspectj.lang.annotation.Around</span>;

  890. <span class="keyword">import</span> <span class="include">org.aspectj.lang.annotation.Aspect</span>;

  891. <span class="keyword">import</span> <span class="include">org.slf4j.Logger</span>;

  892. <span class="keyword">import</span> <span class="include">org.slf4j.LoggerFactory</span>;

  893. 

  894. <span class="keyword">import</span> <span class="include">io.pivotal.workshop.directory.annotation.Audit</span>;

  895. <span class="keyword">import</span> <span class="include">io.pivotal.workshop.directory.config.DirectoryProperties</span>;

  896. 

  897. <span class="annotation">@Aspect</span>

  898. <span class="directive">public</span> <span class="type">class</span> <span class="class">DirectoryAudit</span> {

  899. 

  900.         <span class="directive">private</span> DirectoryProperties props;

  901. 

  902.         <span class="directive">public</span> DirectoryAudit(DirectoryProperties props){

  903.                 <span class="local-variable">this</span>.props = props;

  904.         }

  905. 

  906.         <span class="directive">private</span> <span class="directive">static</span> <span class="predefined-type">Logger</span> log = LoggerFactory.getLogger(<span class="string"><span class="delimiter">&quot;</span><span class="content">[AUDIT]</span><span class="delimiter">&quot;</span></span>);

  907. 

  908.         <span class="annotation">@Around</span>(<span class="string"><span class="delimiter">&quot;</span><span class="content">execution(* *(..)) &amp;&amp; @annotation(audit)</span><span class="delimiter">&quot;</span></span>)

  909.         <span class="directive">public</span> <span class="predefined-type">Object</span> audit(ProceedingJoinPoint jp, Audit audit) <span class="directive">throws</span> <span class="predefined-type">Throwable</span> {

  910.                 <span class="predefined-type">Object</span><span class="type">[]</span> args = jp.getArgs();

  911. 

  912.                 <span class="local-variable">this</span>.printBar();

  913.                 <span class="local-variable">this</span>.print(<span class="string"><span class="delimiter">&quot;</span><span class="content">[executing] </span><span class="delimiter">&quot;</span></span> + (props.getInfo().toLowerCase().equals(<span class="string"><span class="delimiter">&quot;</span><span class="content">short</span><span class="delimiter">&quot;</span></span>) ? jp.getSignature().getName() : jp.getSignature() ));

  914. 

  915.                 <span class="keyword">switch</span> (audit.value()) {

  916.                 <span class="keyword">case</span> BEFORE:

  917.                 <span class="keyword">case</span> BEFORE_AND_AFTER:

  918.                         <span class="local-variable">this</span>.printArgs(args);

  919.                 <span class="keyword">default</span>:

  920.                         <span class="keyword">break</span>;

  921.                 }

  922. 

  923.                 <span class="predefined-type">Object</span> obj = jp.proceed(args);

  924. 

  925.                 <span class="keyword">switch</span> (audit.value()) {

  926.                 <span class="keyword">case</span> AFTER:

  927.                 <span class="keyword">case</span> BEFORE_AND_AFTER:

  928.                         <span class="local-variable">this</span>.print(<span class="string"><span class="delimiter">&quot;</span><span class="content">[result] </span><span class="delimiter">&quot;</span></span> + obj);

  929.                 <span class="keyword">default</span>:

  930.                         <span class="local-variable">this</span>.printBar();

  931.                         <span class="keyword">break</span>;

  932.                 }

  933. 

  934.                 <span class="keyword">return</span> obj;

  935.         }

  936. 

  937.         <span class="directive">private</span> <span class="type">void</span> print(<span class="predefined-type">Object</span> obj) {

  938.                 log.info(obj.toString());

  939.         }

  940. 

  941.         <span class="directive">private</span> <span class="type">void</span> printArgs(<span class="predefined-type">Object</span><span class="type">[]</span> args) {

  942.                 IntStream.range(<span class="integer">0</span>, args.length).forEach(idx -&gt; {

  943.                         log.info(<span class="predefined-type">String</span>.format(<span class="string"><span class="delimiter">&quot;</span><span class="content">[params] arg%d = %s</span><span class="delimiter">&quot;</span></span>, idx, args[idx]));

  944.                 });

  945. 

  946.         }

  947. 

  948.         <span class="directive">private</span> <span class="type">void</span> printBar(){

  949.                 log.info(<span class="string"><span class="delimiter">&quot;</span><span class="content">===========</span><span class="delimiter">&quot;</span></span>);

  950.         }

  951. }</code></pre>

  952. </div>

  953. </div>

  954. <div class="paragraph">

  955. <p>In the <strong>DirectoryRepository</strong> add the <strong>@Audit</strong> annotation in the <strong>findByEmail</strong> method.</p>

  956. </div>

  957. <div class="listingblock">

  958. <div class="title">io.pivotal.workshop.directory.repository.DirectoryRepository.java - snippet</div>

  959. <div class="content">

  960. <pre class="CodeRay highlight"><code data-lang="java"><span class="annotation">@Audit</span>

  961. <span class="directive">public</span> Optional&lt;Person&gt; findByEmail(<span class="predefined-type">String</span> email){

  962.         <span class="keyword">return</span> findFirstBy( p -&gt; p.getEmail().equals(email));

  963. }</code></pre>

  964. </div>

  965. </div>

  966. <div class="paragraph">

  967. <p>Run you application and check out the logs.</p>

  968. </div>

  969. <div class="admonitionblock warning">

  970. <table>

  971. <tr>

  972. <td class="icon">

  973. <div class="title">Warning</div>

  974. </td>

  975. <td class="content">

  976. The <strong>on</strong>/<strong>off</strong> feature only works if you did the challenge from the previous lab. You need to add the <strong>@ConditionalOnProperty</strong> to evaluate if the <strong>directory.audit</strong> is <strong>on</strong> or <strong>off</strong>.

  977. </td>

  978. </tr>

  979. </table>

  980. </div>

  981. <div class="sect3">

  982. <h4 id="_challenges_3">Challenges</h4>

  983. <div class="ulist">

  984. <ul>

  985. <li>

  986. <p>Run you application by testing the <strong>@Audit</strong> annotation values: <strong>Auditor.BEFORE</strong>,<strong>Auditor.AFTER</strong>,<strong>Auditor.BEFORE_AND_AFTER</strong></p>

  987. </li>

  988. <li>

  989. <p>Package your application and:</p>

  990. <div class="ulist">

  991. <ul>

  992. <li>

  993. <p>override the <strong>audit</strong> and <strong>info</strong> properties in the command line.</p>

  994. </li>

  995. <li>

  996. <p>use environment variables to override the <strong>audit</strong> and <strong>info</strong> properties.</p>

  997. </li>

  998. <li>

  999. <p>create a <strong>application.yml</strong> file in the current directory, add the <strong>audit</strong> and <strong>info</strong> properties and execute the program, what happen? did it worked?</p>

  1000. </li>

  1001. </ul>

  1002. </div>

  1003. </li>

  1004. </ul>

  1005. </div>

  1006. <div class="admonitionblock tip">

  1007. <table>

  1008. <tr>

  1009. <td class="icon">

  1010. <div class="title">Tip</div>

  1011. </td>

  1012. <td class="content">

  1013. Remember that, by adding an <strong>application.properties</strong> or <strong>application.yml</strong> to the current directory will override the values.

  1014. </td>

  1015. </tr>

  1016. </table>

  1017. </div>

  1018. </div>

  1019. </div>

  1020. <div class="sect2">

  1021. <h3 id="__homework">[HOMEWORK]</h3>

  1022. <div class="ulist">

  1023. <ul>

  1024. <li>

  1025. <p>Create profiles by:</p>

  1026. <div class="ulist">

  1027. <ul>

  1028. <li>

  1029. <p>Creating an <strong>application-qa.properties</strong> and <strong>application-prod.properties</strong>. Add the properties <strong>audit</strong> and <strong>info</strong> and test by enable the two profiles.</p>

  1030. </li>

  1031. <li>

  1032. <p>Creating an <strong>application.yml</strong> and add the profile section. Test by enable each profile.</p>

  1033. </li>

  1034. </ul>

  1035. </div>

  1036. </li>

  1037. <li>

  1038. <p>Instead of using the @Configuration properties, use <strong>application arguments</strong> to enable the <strong>audit</strong> and <strong>info</strong>.</p>

  1039. </li>

  1040. </ul>

  1041. </div>

  1042. </div>

  1043. </div>

  1044. </div>

  1045. </div>

  1046. <div id="footer">

  1047. <div id="footer-text">

  1048. Last updated 2017-11-18 11:04:35 PST

  1049. </div>

  1050. </div>

  1051. </body>

  1052. </html>