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CloudStack IntegrationUI and API Customization and IntegrationCloudStack Developer On RampMay 3, 2012

What you will learn • How to customize the CloudStack 3.0.x user interface ᵒShowcase changes specific in the CSS to alter the look and feel of CloudStack ᵒShowcase an example of how to add your own side navigation ᵒDealing with Cross Site Request Forgery (CSRF) ᵒSimple Single Signon ᵒLocalization2

What you will learn• Working with the API ᵒSession Based Auth vs API Key Auth ᵒHow to sign a request with apiKey/secretKey ᵒAsynchronous commands ᵒResponse Format ᵒPagination• Q&A

Customizing the CloudStackUser InterfaceEditing the CSSLocalization

Editing the Logo, Navigation, and Title backgrounds#header div.logo { background: url("../images/logo.png") no-repeat scroll 0 center transparent; float: left; height: 47px; #navigation ul li { .dashboard.admin margin: 4px 0 0 19px; background: url("../images/bg-nav-item.png") .dashboard-container .top { position: relative; repeat-x scroll 0 0 background: url("../images/ width: 170px; transparent; bg-breadcrumb.png")} cursor: pointer; repeat-x scroll 0 -1px transparent; height: 50px; border-radius: 7px 7px 0 0; text-shadow: 0 1px 1px #FFFFFF; color: #FFFFFF; } float: left; margin: 0 0 9px; padding: 4px 4px 8px; width: 100%; }

Editing the tables, status icons, and buttons div.button.add { background: url("../images/gradients.png")table tbody td, table th, table tbody td { repeat scroll 0 -98px transparent; div.list-view td.state.on span { border-right: 1px solid #BFBFBF; border-left: 1px solid #808080; background-image: url("../images/sprites.png"); clear: none; border-radius: 4px 4px 4px 4px; background-position: 1px -460px; color: #495A76; border-right: 1px solid #808080; background-repeat: no-repeat; font-size: 12px; color: #4A5A6D; color: #008000; min-width: 88px; cursor: pointer; } overflow: hidden; float: right; padding: 9px 5px 8px 0; font-size: 11px; vertical-align: middle; font-weight: bold; background-color: #f2f0f1 height: 12px;} left: 0; margin: 0 14px 0 0; padding: 5px 7px 5px 6px; position: relative; text-shadow: 0 1px 1px #DEE5EA; top: 5px; }

Adding navigation buttons and functionality 1. Go to /ui/scripts/cloudStack.js 2. Find the sections array: 3. Add a new section to the array: sections: { /** sections: { * Dashboard /** */ * Dashboard dashboard: {}, */ //'dashboard-user': {}, dashboard: {}, instances: {}, //'dashboard-user': {}, storage: {}, instances: {}, network: {}, storage: {}, templates: {}, network: {}, events: {}, templates: {}, accounts: {}, events: {}, domains: {}, accounts: {}, system: {}, domains: {}, projects: {}, system: {}, 'global-settings': {}, projects: {}, configuration: {} 'global-settings': {}, } configuration: {}, // New section testSection: {} }

Adding navigation buttons and functionality 4. Open /ui/index.jsp. Create HTML 5. Enclose a function in 'testSection', somewhere in the 'template' div to which returns a jQuery object contain your HTML content, which will be containing your template code, and drawn in the browser pane: whatever other content you wish to be shown: sections: {  /** <div id="template"> * Dashboard */ <div class="testSection-tmpl"> dashboard: {}, <h1>Test section</h1> //'dashboard-user': {}, instances: {}, </div> storage: {}, </div> network: {}, templates: {}, events: {}, accounts: {}, domains: {}, system: {}, projects: {}, 'global-settings': {}, configuration: {}, // New section testSection: { title: 'Title for section', show: function(args) { return $('#template .testSection- tmpl').clone(); } } }

Adding navigation buttons and functionality 6. Add the section to the pre-filter, so that it isn't filtered out for the admin account: -- sectionPreFilter: function(args) { if(isAdmin()) { return ["dashboard", "instances", "storage", "network", "templates", "accounts", "domain s", "events", "system", "global-settings", "configuration", "projects"]; }, sectionPreFilter: function(args) { if(isAdmin()) { return ["dashboard", "instances", "storage", "network", "templates", "accounts", "domain s", "events", "system", "global-settings", "configuration", "projects", // New section "testSection"]; }, ...

Adding navigation buttons and functionality 7. (optional) Add an icon for your new section in the CSS, either at the bottom of /ui/css/cloudstack3.css or in your own CSS file under /ui/css folder. Make sure the size of the icon is ~32x32 pixels: #navigation ul li.testSection span.icon { background: url('../images/testSection-icon.png') no-repeat 0px 0px; }

Cross Site Request Forgery (CSRF)• Type of malicious exploit of a website whereby unauthorized commands are transmitted from a user that the website trusts. Unlike cross-site scripting (XSS), which exploits the trust a user has for a particular site, CSRF exploits the trust that a site has in a user's browse• What does CS do to prevent this? ᵒAfter execution of the login command you will get two session variables • JSESSIONID – default cookie • SESSIONKEY – random token that is passed along every API request - http://<API URL>?sessionkey=<SESSIONKEY>&…

Simple Single Signonhttp://<api_url>?command=login&username=XXX&domainid=NNN&timestamp=YYY&signature=<secure-hash>• You do not need to pass in the API Key• The four parameters that must be passed in for the login command are domainId, username, timestamp, and signature• security.singlesignon.key• security.singlesignon.tolerance.millis• SAML?

LocalizationᵒSupport for Japanese and Simplified ChineseᵒTakes advantage of the Java ResourceBundle to do localizationᵒSimply create a /WEB-INF/classes/resources/messages_<language code>.propertiesᵒServer side vs Client side processing

Session-based Auth vs API Key Auth• CloudStack supports two ways of authenticating via the API.• Session-based Auth ᵒUses default Java Servlet cookie based sessions ᵒUse the “login” API to get a JSESSIONID cookie and a SESSIONKEY token ᵒAll API commands require both cookie and token to authenticate ᵒHas a timeout as configured within Tomcat• API Key Auth ᵒWorks similarly to AWS API ᵒRequires a bit more coding to generate the signature ᵒAll API commands require a signature hash

SIGNING REQUEST WITH API KEY / SECRET KEYStep 1:commandString = command name + parameters + api keyURL encode each field-value pair within the commandstringStep 2:Lower case the entire commandString and sort it alphabetically via the field for each field-value pair.sortedCommandString :apiKey=vmwijj…&command=createvolume&diskofferingid=1&name=smallvolume=zoneid=1Step 3:Take the sortedCommandString and run it through the HMAC SHA-1 hashing algorithm (mostprogramming languages offer a utility method to do this) with the user’s Secret Key. Base64 encodethe resulting byte array in UTF-8 so that it can be safely transmitted via HTTP. The final stringproduced after Base64 encoding should be SyjAz5bggPk08I1DE34lnH9x%2f4%3D

Asynchronous CommandsᵒStarting with 3.0, in your standard CRUD (Create, Read, Update, Delete) of any first class objects in CloudStack, CUD are automatically asynchronous. R is synchronous.ᵒRather than returning a response object, it will return a job ID.ᵒIf it is a “Create” command, it will also return the object ID.ᵒWith the job ID, you can query the async job status via the queryAsyncJobResult command.ᵒThe queryAsyncJobResult response will return the following possible job status code: • 0 - Job is still in progress. Continue to periodically poll for any status changes. • 1 - Job has successfully completed. The job will return any successful response values associated with command that was originally executed. • 2 - Job has failed to complete. Please check the <jobresultcode> tag for failure reason code and <jobresult> for the failure reason.

RESPONSE FORMATCloudStack supports two formats as the response to an API call.The default response is XML. If you would like the response to be in JSON, add &response=json to theCommand String.Sample XML Response:<listipaddressesresponse> <allocatedipaddress> <ipaddress>192.168.10.141</ipaddress> <allocated>2009-09-18T13:16:10-0700</allocated> <zoneid>4</zoneid> <zonename>WC</zonename> <issourcenat>true</issourcenat></allocatedipaddress> </listipaddressesresponse>Sample JSON Response:{ "listipaddressesresponse" : { "allocatedipaddress" : [ { "ipaddress" : "192.168.10.141", "allocated" : "2009-09-18T13:16:10-0700", "zoneid" : "4", "zonename" : "WC", "issourcenat" : "true" } ]

Pagination• Using the page and pagesize parameter • page defines the current cursor to the list • pagesize defines the number of items per request • Pagesize is limited by the administrator • Sample: • listVirtualMachines&page=1&pagesize=500 • listVirtualMachines&page=2&pagesize=500

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