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spring-cloud-cli/devtools/spring-cloud-cli.html
2016-05-05 19:47:16 +00:00

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</head>
<body class="article">
<div id="header">
<h1>Spring Boot Cloud CLI</h1>
</div>
<div id="content">
<div id="preamble">
<div class="sectionbody">
<div class="paragraph">
<p>Spring Boot CLI provides <a href="http://projects.spring.io/spring-boot">Spring Boot</a> command line features for
<a href="https://github.com/spring-cloud">Spring Cloud</a>. You can write Groovy scripts to run Spring Cloud component applications
(e.g. <code>@EnableEurekaServer</code>). You can also easily do things like encryption and decryption to support Spring Cloud
Config clients with secret configuration values.</p>
</div>
<div class="admonitionblock note">
<table>
<tr>
<td class="icon">
<div class="title">Note</div>
</td>
<td class="content">
Spring Cloud is released under the non-restrictive Apache 2.0 license. If you would like to contribute to this section of the documentation or if you find an error, please find the source code and issue trackers in the project at <a href="https://github.com/spring-cloud/spring-cloud-cli/tree/master/docs/src/main/asciidoc">github</a>.
</td>
</tr>
</table>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_installation">Installation</h2>
<div class="sectionbody">
<div class="paragraph">
<p>To install, make
sure you have
<a href="https://github.com/spring-projects/spring-boot">Spring Boot CLI</a>
(1.3.0 or better):</p>
</div>
<div class="literalblock">
<div class="content">
<pre>$ spring version
Spring CLI v1.3.2.RELEASE</pre>
</div>
</div>
<div class="paragraph">
<p>E.g. for SDKMan users</p>
</div>
<div class="listingblock">
<div class="content">
<pre class="highlight"><code>$ sdk install springboot 1.3.2.RELEASE
$ sdk use springboot 1.3.2.RELEASE</code></pre>
</div>
</div>
<div class="paragraph">
<p>and install the Spring Cloud plugin:</p>
</div>
<div class="listingblock">
<div class="content">
<pre class="highlight"><code>$ mvn install
$ spring install org.springframework.cloud:spring-cloud-cli:1.1.0.RC1</code></pre>
</div>
</div>
<div class="admonitionblock important">
<table>
<tr>
<td class="icon">
<div class="title">Important</div>
</td>
<td class="content">
<strong>Prerequisites:</strong> to use the encryption and decryption features
you need the full-strength JCE installed in your JVM (it&#8217;s not there by default).
You can download the "Java Cryptography Extension (JCE) Unlimited Strength Jurisdiction Policy Files"
from Oracle, and follow instructions for installation (essentially replace the 2 policy files
in the JRE lib/security directory with the ones that you downloaded).
</td>
</tr>
</table>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_writing_groovy_scripts_and_running_applications">Writing Groovy Scripts and Running Applications</h2>
<div class="sectionbody">
<div class="paragraph">
<p>Spring Cloud CLI has support for most of the Spring Cloud declarative
features, such as the <code>@Enable*</code> class of annotations. For example,
here is a fully functional Eureka server</p>
</div>
<div class="listingblock">
<div class="title">app.groovy</div>
<div class="content">
<pre class="highlight"><code class="language-groovy" data-lang="groovy">@EnableEurekaServer
class Eureka {}</code></pre>
</div>
</div>
<div class="paragraph">
<p>which you can run from the command line like this</p>
</div>
<div class="listingblock">
<div class="content">
<pre>$ spring run app.groovy</pre>
</div>
</div>
<div class="paragraph">
<p>To include additional dependencies, often it suffices just to add the
appropriate feature-enabling annotation, e.g. <code>@EnableConfigServer</code>,
<code>@EnableOAuth2Sso</code> or <code>@EnableEurekaClient</code>. To manually include a
dependency you can use a <code>@Grab</code> with the special "Spring Boot" short
style artifact co-ordinates, i.e. with just the artifact ID (no need
for group or version information), e.g. to set up a client app to
listen on AMQP for management events from the Spring CLoud Bus:</p>
</div>
<div class="listingblock">
<div class="title">app.groovy</div>
<div class="content">
<pre class="highlight"><code class="language-groovy" data-lang="groovy">@Grab('spring-cloud-starter-bus-amqp')
@RestController
class Service {
@RequestMapping('/')
def home() { [message: 'Hello'] }
}</code></pre>
</div>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_encryption_and_decryption">Encryption and Decryption</h2>
<div class="sectionbody">
<div class="paragraph">
<p>The Spring Cloud CLI comes with an "encrypt" and a "decrypt"
command. Both accept arguments in the same form with a key specified
as a mandatory "--key", e.g.</p>
</div>
<div class="listingblock">
<div class="content">
<pre>$ spring encrypt mysecret --key foo
682bc583f4641835fa2db009355293665d2647dade3375c0ee201de2a49f7bda
$ spring decrypt --key foo 682bc583f4641835fa2db009355293665d2647dade3375c0ee201de2a49f7bda
mysecret</pre>
</div>
</div>
<div class="paragraph">
<p>To use a key in a file (e.g. an RSA public key for encyption) prepend
the key value with "@" and provide the file path, e.g.</p>
</div>
<div class="listingblock">
<div class="content">
<pre>$ spring encrypt mysecret --key @${HOME}/.ssh/id_rsa.pub
AQAjPgt3eFZQXwt8tsHAVv/QHiY5sI2dRcR+...</pre>
</div>
</div>
</div>
</div>
</div>
<div id="footer">
<div id="footer-text">
Last updated 2016-05-05 19:44:34 UTC
</div>
</div>
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