| The purpose of this sample is to show an example usage of the new "CompletableFuture" dependency that has been |
| added in the dm-lambda library. CompletableFuture java8 class provides functional operations and promotes an asynchronous event-driven model. |
| |
| In such model, you can use the new dm-lambda library to add dependencies on asynchronous events using the standard JDK CompletableFuture class. |
| |
| In this example, the Activator first defines a PageLink component that is used to download a given page from the web. The service then parses |
| the content of the page and returns all available hrefs (links) found from the web page. |
| |
| The PageLink is initialized with the Felix web site URL, which is asynchronously downloaded from the PageLink::init method, using a CompletableFuture. |
| The CF is then added as a "FutureDependency" in the PageLinkImpl.init() method, and when the CF completes, the PageLinkImpl.start() callback is invoked |
| and the service is registered. |
| |
| The Activator is then getting injected with the PageLink service, and displays the links (hrefs) found from the Felix web site. |
| |
| Caution: if you are using a corporate http proxy, you have to fix the Activator in order to configure the ip addr and port number of your |
| http proxy. |
