OSGi Small Lab

OSG i 動態服務模組開發實作詹景逸 Ching Yi, Chan. aka qrtt1 [email_address]

Agenda ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

開發環境準備 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

開發環境準備 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

開發環境準備 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Felix 基本操作 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

安裝 Bundle ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],install http:// apache.ntu.edu.tw/felix/org.apache.felix.fileinstall-0.9.0.jar install file:// /c:/temp /org.apache.felix.fileinstall-0.9.0.jar install file:// /home/qrtt1/temp/ org.apache.felix.fileinstall-0.9.0.jar

建立 Bundle ,[object Object],[object Object],[object Object],mvn archetype:create -Dversion=1.0.0 -DgroupId=javatwo2009 -DartifactId=hello.bundle mvn archetype:create ^ -Dversion=1.0.0 ^ -DgroupId=javatwo2009 ^ -DartifactId=hello.bundle

Maven 專案導覽 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

使用 Maven-Bundle-Plugin (1) ,[object Object],[object Object],[object Object],[object Object],<dependency> <groupId>org.apache.felix</groupId> <artifactId>org.osgi.core</artifactId> <version>1.0.0</version> </dependency>

使用 Maven-Bundle-Plugin (2) <build> <plugins> <plugin> <groupId>org.apache.felix</groupId> <artifactId>maven-bundle-plugin</artifactId> <extensions>true</extensions> <configuration> <instructions> <Export-Package>${pom.groupId}</Export-Package> <Bundle-SymbolicName>${pom.artifactId}</Bundle-SymbolicName> <Bundle-Activator>${pom.groupId}.Activator</Bundle-Activator> </instructions> </configuration> </plugin> </plugins> </build> Manifest-Version: 1.0 Export-Package: javatwo2009;uses:="org.osgi.framework" Built-By: Administrator Tool: Bnd-0.0.308 Bundle-Name: hello.bundle Created-By: Apache Maven Bundle Plugin Bundle-Version: 1.0.0 Build-Jdk: 1.6.0_06 Bnd-LastModified: 1235833008625 Bundle-ManifestVersion: 2 Bundle-Activator: javatwo2009.Activator Import-Package: javatwo2009,org.osgi.framework;version="1.3" Bundle-SymbolicName: hello.bundle

建立 Bundle Activator package javatwo2009; import org.osgi.framework.BundleActivator; import org.osgi.framework.BundleContext; /** * Hello world! */ public class Activator implements BundleActivator { public void start(BundleContext context) throws Exception { System. out .println("Hey!"); } public void stop(BundleContext context) throws Exception { System. out .println("Bye!"); } } #12 .. #13

編譯與安裝 bundle ,[object Object],[object Object],[object Object],[object Object]

OSGi 怎麼跑？ System Bundle B B B PID 永遠為 0 JVM OSGi Framework Module Life Cycle Service

OSGi 怎麼跑？ Installed Resolving & Loading Classes Resolved JVM OSGi Framework System Bundle M O D U L E Export-Package: org.osgi.framework, org.osgi.framework.hooks.service, org.osgi.service.packageadmin, org.osgi.service.startlevel, org.osgi.service.url, org.osgi.util.tracker

OSGi 怎麼跑？ Resolved public class Activator implements BundleActivator { public void start(BundleContext context) throws Exception { System. out .println("Hey!"); } public void stop(BundleContext context) throws Exception { System. out .println("Bye!"); } } JVM OSGi Framework System Bundle L I F E C Y C L E Starting Active Stopping Activator.stop() Activator.start()

PART 2 Service is Everything

OSGi Service 在哪裡？ JVM OSGi Framework SERVICE REGISTRY Bundle Activator Bundle Activator Bundle Activator publish publish publish find & bind find & bind find & bind unpublish unpublish unpublish

服務與實作角色 (1) ,[object Object],Export-Package Bundle Activator

服務與實作角色 (2) ,[object Object],Import-Package Bundle Activator

服務與實作角色 (3) ,[object Object],Import-Package ServiceRegistration registration = bundleContext. registerService ( ServiceA .class.getName(), new ConcreteServiceA() , prop); Bundle Activator

服務與實作角色 (4) ,[object Object],Import-Package ServiceReference ref = bundleContext . getServiceReference ( ServiceA .class.getName()); ServiceA service = (ServiceA) bundleContext.getService(ref); Bundle Activator

實作 TinyURL Command(1) ,[object Object],Apache Felix Shell Service Activator Apache Felix Shell TUI Activator Tinyurl Command Activator

實作 TinyURL Command(2) org.apache.felix.shell Export-Package Import-Package // 發佈 Service bundleContext.registerService( org.apache.felix.shell. Command .class.getName(), new TinyURLCommand (), null); Apache Felix Shell Service Activator Apache Felix Shell TUI Activator Tinyurl Command Activator 實作 Service

實作 TinyURL Command(3) publish publish 追蹤 Command 服務加入新增的 Command 服務使用 ShellService 擁有的 Command Apache Felix Shell Service Activator Apache Felix Shell TUI Activator Tinyurl Command Activator

動手做看看 ,[object Object],[object Object],[object Object]

詹景逸 Ching Yi, Chan. aka qrtt1 [email_address] Thank You

OSGi Small Lab

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