sensorweaver:developer-guide
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| sensorweaver:developer-guide [2015-11-10 16:29] – [SensorWeaver Developer Guide] luigi.fortunati | sensorweaver:developer-guide [2015-11-10 16:46] (current) – [Testing your app] luigi.fortunati | ||
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| The project must generate an OSGi bundle, so: | The project must generate an OSGi bundle, so: | ||
| *Set packaging type to //bundle// | *Set packaging type to //bundle// | ||
| - | *Set Java 7 compiler with [[http:// | + | *Set Java compiler with [[http:// |
| *Include the [[http:// | *Include the [[http:// | ||
| Line 92: | Line 92: | ||
| < | < | ||
| < | < | ||
| - | < | + | < |
| - | < | + | < |
| </ | </ | ||
| </ | </ | ||
| Line 123: | Line 123: | ||
| < | < | ||
| < | < | ||
| - | < | + | < |
| </ | </ | ||
| </ | </ | ||
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| There are several ways to achieve this. Here we list two solutions: | There are several ways to achieve this. Here we list two solutions: | ||
| * Querying the service registry programmatically using // | * Querying the service registry programmatically using // | ||
| - | * Blueprint | + | * Blueprint |
| - | === Bundle Activator === | ||
| - | |||
| - | You'll need OSGi dependencies in your pom: | ||
| - | <file xml pom.xml> | ||
| - | < | ||
| - | < | ||
| - | < | ||
| - | < | ||
| - | </ | ||
| - | </ | ||
| - | |||
| - | Then create a java class for your bundle activator: | ||
| - | <file java MySensorPublisherActivator.java> | ||
| - | package it.cnr.isti.sample; | ||
| - | |||
| - | import it.cnr.isti.sensorweaver.middleware.api.Middleware; | ||
| - | |||
| - | import org.osgi.framework.BundleActivator; | ||
| - | import org.osgi.framework.BundleContext; | ||
| - | import org.osgi.framework.ServiceReference; | ||
| - | |||
| - | public class MySensorPublisherActivator implements BundleActivator { | ||
| - | |||
| - | private ServiceReference< | ||
| - | private MySensorPublisher publisher; | ||
| - | |||
| - | public void start(BundleContext context) throws Exception { | ||
| - | middlewareReference = context.getServiceReference(Middleware.class); | ||
| - | Middleware middleware = context.getService(middlewareReference); | ||
| - | // | ||
| - | publisher = new MySensorPublisher(middleware); | ||
| - | publisher.start(); | ||
| - | } | ||
| - | |||
| - | public void stop(BundleContext context) throws Exception { | ||
| - | publisher.stop(); | ||
| - | context.ungetService(middlewareReference); | ||
| - | } | ||
| - | |||
| - | } | ||
| - | </ | ||
| - | |||
| - | Declare your bundle activator in your Manifest by configuring the //maven bundle plugin//: | ||
| - | <file xml pom.xml> | ||
| - | < | ||
| - | < | ||
| - | < | ||
| - | < | ||
| - | < | ||
| - | < | ||
| - | < | ||
| - | < | ||
| - | < | ||
| - | </ | ||
| - | </ | ||
| - | </ | ||
| - | </ | ||
| === Blueprint === | === Blueprint === | ||
| Line 237: | Line 180: | ||
| xsi: | xsi: | ||
| http:// | http:// | ||
| - | http:// | + | http:// |
| - | default-activation=" | + | |
| < | < | ||
| Line 301: | Line 243: | ||
| builder.property(" | builder.property(" | ||
| builder.parameter(" | builder.parameter(" | ||
| - | builder.parameter(" | + | return |
| - | DataFeedDescriptor descriptor = builder.build(); | + | |
| - | return descriptor; | + | |
| } | } | ||
| </ | </ | ||
| Line 329: | Line 269: | ||
| MessageBuilder messageBuilder = dataFeedClient.buildMessage(); | MessageBuilder messageBuilder = dataFeedClient.buildMessage(); | ||
| messageBuilder.entry(" | messageBuilder.entry(" | ||
| - | messageBuilder.entry(" | + | messageBuilder.timestamp(Calendar.getInstance().getTimeInMillis()); |
| messageBuilder.send(); | messageBuilder.send(); | ||
| } | } | ||
| Line 335: | Line 275: | ||
| In order to publish a message for a given //data feed// you must produce values for all of the message elements defined previously in the //data feed descriptor// | In order to publish a message for a given //data feed// you must produce values for all of the message elements defined previously in the //data feed descriptor// | ||
| + | |||
| + | The datafeed client includes a method // | ||
| === Unregistering a Data Feed === | === Unregistering a Data Feed === | ||
| Line 408: | Line 350: | ||
| Applications can be easily tested in the [[http:// | Applications can be easily tested in the [[http:// | ||
| - | SensorWeaver provides a preconfigured {{: | + | You can download your preferred Apache Karaf release |
| - | Alternatively you can download your preferred Apache Karaf release and use the '' | + | |
| - | Configuration coming with both solutions assume | + | Deafult feature configuration assumes |
| Please refer to the [[sensorweaver: | Please refer to the [[sensorweaver: | ||
sensorweaver/developer-guide.1447172959.txt.gz · Last modified: 2015-11-10 16:29 by luigi.fortunati