Spring Dynamic Modules
Spring Dynamic Modules
Zanim zaczniesz czytać ten wpis polecam Ci zapoznać się z artykułem https://javaleader.pl/2019/12/20/apache-servicemix-wprowadzenie/. Spring Dynamic Modules łączy technologię Spring z platformą OSGi. Spring Dynamic Modules udostępnia komponenty Spring’owe jako komponenty OSGi (widoczne dla innych komponentów OSGi). Do dzieła! Tworzymy nowy projekt Apache Maven:
Moduł – Producer – plik pom.xml:
<dependencies> <dependency> <groupId>org.springframework.osgi</groupId> <artifactId>spring-osgi</artifactId> <version>1.2.1</version> <type>pom</type> </dependency> <dependency> <groupId>javax</groupId> <artifactId>javaee-api</artifactId> <version>7.0</version> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>2.0.2</version> <configuration> <source>1.7</source> <target>1.7</target> </configuration> </plugin> <plugin> <groupId>org.apache.felix</groupId> <artifactId>maven-bundle-plugin</artifactId> <extensions>true</extensions> <configuration> <instructions> <Bundle-SymbolicName>OSGiDmHelloWorldProvider</Bundle-SymbolicName> <Export-Package>pl.javaleader.ws</Export-Package> <Bundle-Vendor>Baptiste Wicht</Bundle-Vendor> </instructions> </configuration> </plugin> </plugins> </build>
Interfejs – HelloWorldService :
public interface HelloWorldService { void hello(); }
implementacja – HelloWorldServiceImpl :
public class HelloWorldServiceImpl implements HelloWorldService { public void hello(){ System.out.println("Hello World !"); } }
Plik ./resources/META-INF/spring/provider-context.xml:
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:jaxws="http://cxf.apache.org/jaxws" xmlns:osgi="http://www.springframework.org/schema/osgi" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/osgi http://www.springframework.org/schema/osgi/spring-osgi.xsd http://cxf.apache.org/jaxws http://cxf.apache.org/schemas/jaxws.xsd"> <bean id="helloWorldService" class="pl.javaleader.ws.HelloWorldServiceImpl"/> <osgi:service ref="helloWorldService" interface="pl.javaleader.ws.HelloWorldService"/> <jaxws:endpoint id = "calcService" implementor = "pl.javaleader.ws.CalculatorImpl" address = "/calcService" /> </beans>
Moduł – Consumer – plik pom.xml:
<dependencies> <dependency> <groupId>pl.javaleader</groupId> <artifactId>javaleader-calc-osgi</artifactId> <version>1.0.1-SNAPSHOT</version> </dependency> <dependency> <groupId>org.springframework.osgi</groupId> <artifactId>spring-osgi</artifactId> <version>1.2.1</version> <type>pom</type> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>2.0.2</version> <configuration> <source>1.7</source> <target>1.7</target> </configuration> </plugin> <plugin> <groupId>org.apache.felix</groupId> <artifactId>maven-bundle-plugin</artifactId> <extensions>true</extensions> <configuration> <instructions> <Bundle-SymbolicName>OSGiDmHelloWorldConsumer</Bundle-SymbolicName> <Bundle-Vendor>Baptiste Wicht</Bundle-Vendor> </instructions> </configuration> </plugin> </plugins> </build>
Plik ./resources/META-INF/spring/provider-context.xml:
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:osgi="http://www.springframework.org/schema/osgi" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/osgi http://www.springframework.org/schema/osgi/spring-osgi.xsd"> <bean id="consumer" class="pl.javaleader.HelloWorldConsumer" init-method="startTimer" destroy-method="stopTimer" lazy-init="false" > <constructor-arg ref="eventService"/> </bean> <osgi:reference id="eventService" interface="pl.javaleader.ws.HelloWorldService"/> </beans>
Klasa HelloWorldConsumer:
public class HelloWorldConsumer implements ActionListener { private final Timer timer = new Timer(1000, this); private final HelloWorldService service; public HelloWorldConsumer(HelloWorldService service) { super(); this.service = service; } public void startTimer(){ timer.start(); } public void stopTimer() { timer.stop(); } @Override public void actionPerformed(ActionEvent e) { service.hello(); } }
instalujemy obydwa moduły w lokalnym repozytorium mavena:
mvn install
uruchamiamy Apache ServiceMix i instalujemy moduł producenta:
install mvn:pl.javaleader/javaleader-calc-osgi/1.0.0-SNAPSHOT
moduł startujemy!
start 342gdzie 342 to nadany numer Bundle.
instalujemy moduł konsumenta:
install mvn:OSGiDmHelloWorldConsumer/OSGiDmHelloWorldConsumer/1.0.0-SNAPSHOT
moduł startujemy:
start 343gdzie 343 to nadany numer Bundle.
wynik:
jenkins@root>Hello World ! Hello World ! Hello World ! Hello World ! Hello World ! Hello World !
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