WSO2 Mashup Server

Mashups are composed using server side JavaScript in WSO2 Mashup Server. A set of language extensions along with E4X provides domain specific features such as;

• Calling other SOAP/REST web services
• RSS/Atom feed reading and writing
• Web scraping
• APP based publishing
• Periodic task scheduling
• E-mailing
• Instant messages

function hello() {

return "Hello World";

}

function invokeGetVersionService(){

var version = new WSRequest();

var options = new Array();

options.useSOAP = 1.2;

options.useWSA = 1.0;

options.action = "http://services.mashup.wso2.org/version/ServiceInterface/getVersionRequest";

var payload = null;

var result;

try {

version.open(options, "http://localhost:7762/services/system/version", false);

version.send(payload);

result = version.responseE4X;

} catch (e) {

system.log(e.toString(), "error");

return e.toString();

}

return result;

}

// Creating an RSS 2.0 feed and writing it to file.

function createRssFeed() {

// Creating the Feed

var feed = new Feed();

feed.feedType = "rss_2.0";

feed.title = "This is a test Feed";

feed.description = "This feed demonstrates the use of Feed host object to create an RSS 2.0 feed.";

feed.link = "http://mooshup.com/rss20.xml";

// Creating Entries in the Feed

var entry = new Entry();

entry.title = "This is a test entry.";

entry.description = "This is a sample entry demonstrating the use of the Entry host object.";

feed.insertEntry(entry);

var entry2 = new Entry();

entry2.title = "This is another test entry.";

entry2.description = "This is a sample entry demonstrating the use of the Entry host object.";

// Adding a Media Module to the entry

var mediaModule = new

MediaModule("http://www.earthshots.org/photos/387.jpg");

mediaModule.copyright = "2007 Tad Bowman";

mediaModule.type = "image/jpeg";

mediaModule.thumbnail = "http://www.earthshots.org/photos/387.thumb.jpg";

entry2.addMediaModule(mediaModule);

feed.insertEntry(entry2);

// Writing the newly created Feed to a File

var result = feed.writeTo("test-created-rss-feed.xml");

return result;

}

function webScrape() {

var config =

;

var scraper = new Scraper(config);

result = scraper.response;

return result;

}

The syntax is identical to another open-source web scraping tool called web harvest.

function persistAuthenticatedAppFeed() {

// Creating an instance of APPClient

var client = new APPClient();

// Creating an instance of AtomFeed

var feed = new AtomFeed();

// Setting login credentials for the client

client.credentials = {username: "you@email.com", password: "xxx", service: "blogger", authtype: "google"};

// Retrieving and online feed

feed = client.getFeed("http://blog.mooshup.com/feeds/posts/default");

// Getting an array of individual entries from the feed

var entries = new Array();

entries = feed.getEntries();

// Writing the retrieved feed to a file

feed.writeTo("my-file-name.xml");

}

// Scheduling a function to be executed every 2 seconds

var uuid = system.setInterval('myJavaScriptFunction("parameterValue")', 2000);

// Stopping the above scheduled task

system.clearInterval(uuid);

function sendEmail(){

var email = new Email("host", "port", "username", "password");

var file = new File("temp.txt");

email.from = "test@wso2.com";

email.to = "test@wso2.com"; // alternatively message.to can be an array of strings. Same goes for cc and bcc

email.cc = "test@wso2.com";

email.bcc = "test@wso2.com";

email.subject = "WSO2 Mashup server 1.0 Released";

email.addAttachement(file, "temp.txt"); // Optionally can add attachments, it has a variable number of arguments. each argument can be a File hostObject or a string representing a file.

// In this case we are sending two attachments (this demonstrates sending attachments using either a File Host Object or a path to the file).

email.text = "WSO2 Mashup server 1.0 was Released on 28th January 2008";

email.send();

}

• Mashup (web application hybrid)
• ECMAScript for XML
• Web scraping
• Yahoo! Pipes
• Yahoo! query language

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• {{Official website}}

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Category:Web scraping