Github user CMoH commented on a diff in the pull request:
https://github.com/apache/incubator-brooklyn/pull/962#discussion_r43187070
--- Diff: core/src/main/java/org/apache/brooklyn/util/core/osgi/Osgis.java
---
@@ -336,195 +277,56 @@ public static BundleFinder bundleFinder(Framework
framework) {
return
bundleFinder(framework).symbolicName(symbolicName).version(Predicates.equalTo(version)).findUnique();
}
- // -------- creating
-
- /*
- * loading framework factory and starting framework based on:
- *
http://felix.apache.org/documentation/subprojects/apache-felix-framework/apache-felix-framework-launching-and-embedding.html
+ /**
+ * Provides an OSGI framework.
+ *
+ * When running inside an OSGi container, the container framework is
returned.
+ * When running standalone a new Apache Felix container is created.
+ *
+ * Calling {@link #ungetFramework(Framework) } is needed in both
cases, either to stop
+ * the embedded framework or to release the service reference.
+ *
+ * @param felixCacheDir
+ * @param clean
+ * @return
+ * @todo Use felixCacheDir ?
*/
-
- public static FrameworkFactory newFrameworkFactory() {
- URL url = Osgis.class.getClassLoader().getResource(
-
"META-INF/services/org.osgi.framework.launch.FrameworkFactory");
- if (url != null) {
- try {
- BufferedReader br = new BufferedReader(new
InputStreamReader(url.openStream()));
- try {
- for (String s = br.readLine(); s != null; s =
br.readLine()) {
- s = s.trim();
- // load the first non-empty, non-commented line
- if ((s.length() > 0) && (s.charAt(0) != '#')) {
- return (FrameworkFactory)
Class.forName(s).newInstance();
- }
- }
- } finally {
- if (br != null) br.close();
- }
- } catch (Exception e) {
- // class creation exceptions are not interesting to
caller...
- throw Exceptions.propagate(e);
- }
- }
- throw new IllegalStateException("Could not find framework
factory.");
- }
-
- public static Framework newFrameworkStarted(String felixCacheDir,
boolean clean, Map<?,?> extraStartupConfig) {
- Map<Object,Object> cfg = MutableMap.copyOf(extraStartupConfig);
- if (clean) cfg.put(Constants.FRAMEWORK_STORAGE_CLEAN,
"onFirstInit");
- if (felixCacheDir!=null) cfg.put(Constants.FRAMEWORK_STORAGE,
felixCacheDir);
- cfg.put(Constants.FRAMEWORK_BSNVERSION,
Constants.FRAMEWORK_BSNVERSION_MULTIPLE);
- FrameworkFactory factory = newFrameworkFactory();
-
- Stopwatch timer = Stopwatch.createStarted();
- Framework framework = factory.newFramework(cfg);
- try {
- framework.init();
- installBootBundles(framework);
- framework.start();
- } catch (Exception e) {
- // framework bundle start exceptions are not interesting to
caller...
- throw Exceptions.propagate(e);
+ public static Framework getFramework(String felixCacheDir, boolean
clean) {
+ final Bundle frameworkBundle =
FrameworkUtil.getBundle(Framework.class);
+ if (frameworkBundle != null) {
+ // already running inside an OSGi container
+ final BundleContext ctx = frameworkBundle.getBundleContext();
+ final ServiceReference<?> ref =
ctx.getServiceReference(Framework.class);
+ return (Framework) ctx.getService(ref);
+ } else {
+ // not running inside OSGi container
+ return
EmbeddedFelixFramework.newFrameworkStarted(felixCacheDir, clean, null);
}
- LOG.debug("System bundles are: "+SYSTEM_BUNDLES);
- LOG.debug("OSGi framework started in " + Duration.of(timer));
- return framework;
}
- private static void installBootBundles(Framework framework) {
- Stopwatch timer = Stopwatch.createStarted();
- LOG.debug("Installing OSGi boot bundles from
"+Osgis.class.getClassLoader()+"...");
- Enumeration<URL> resources;
- try {
- resources =
Osgis.class.getClassLoader().getResources(MANIFEST_PATH);
- } catch (IOException e) {
- throw Exceptions.propagate(e);
- }
- BundleContext bundleContext = framework.getBundleContext();
- Map<String, Bundle> installedBundles =
getInstalledBundlesById(bundleContext);
- while(resources.hasMoreElements()) {
- URL url = resources.nextElement();
- ReferenceWithError<?> installResult =
installExtensionBundle(bundleContext, url, installedBundles,
getVersionedId(framework));
- if (installResult.hasError() &&
!installResult.masksErrorIfPresent()) {
- // it's reported as a critical error, so warn here
- LOG.warn("Unable to install manifest from "+url+":
"+installResult.getError(), installResult.getError());
- } else {
- Object result = installResult.getWithoutError();
- if (result instanceof Bundle) {
- String v = getVersionedId( (Bundle)result );
- SYSTEM_BUNDLES.add(v);
- if (installResult.hasError()) {
-
LOG.debug(installResult.getError().getMessage()+(result!=null ? "
("+result+"/"+v+")" : ""));
- } else {
- LOG.debug("Installed "+v+" from "+url);
- }
- } else if (installResult.hasError()) {
- LOG.debug(installResult.getError().getMessage());
- }
- }
- }
- LOG.debug("Installed OSGi boot bundles in
"+Time.makeTimeStringRounded(timer)+":
"+Arrays.asList(framework.getBundleContext().getBundles()));
- }
-
- private static Map<String, Bundle>
getInstalledBundlesById(BundleContext bundleContext) {
- Map<String, Bundle> installedBundles = new HashMap<String,
Bundle>();
- Bundle[] bundles = bundleContext.getBundles();
- for (Bundle b : bundles) {
- installedBundles.put(getVersionedId(b), b);
- }
- return installedBundles;
- }
-
- /** Wraps the bundle if successful or already installed, wraps TRUE if
it's the system entry,
- * wraps null if the bundle is already installed from somewhere else;
- * in all these cases <i>masking</i> an explanatory error if already
installed or it's the system entry.
- * <p>
- * Returns an instance wrapping null and <i>throwing</i> an error if
the bundle could not be installed.
+ /**
+ * Stops/ungets the OSGi framework.
+ *
+ * See {@link #getFramework(java.lang.String, boolean)}
+ *
+ * @param framework
*/
- private static ReferenceWithError<?>
installExtensionBundle(BundleContext bundleContext, URL manifestUrl,
Map<String, Bundle> installedBundles, String frameworkVersionedId) {
- //ignore http://felix.extensions:9/ system entry
- if("felix.extensions".equals(manifestUrl.getHost()))
- return ReferenceWithError.newInstanceMaskingError(null, new
IllegalArgumentException("Skipping install of internal extension bundle from
"+manifestUrl));
-
- try {
- Manifest manifest = readManifest(manifestUrl);
- if (!isValidBundle(manifest))
- return ReferenceWithError.newInstanceMaskingError(null,
new IllegalArgumentException("Resource at "+manifestUrl+" is not an OSGi
bundle: no valid manifest"));
-
- String versionedId = getVersionedId(manifest);
- URL bundleUrl = ResourceUtils.getContainerUrl(manifestUrl,
MANIFEST_PATH);
-
- Bundle existingBundle = installedBundles.get(versionedId);
- if (existingBundle != null) {
- if (!bundleUrl.equals(existingBundle.getLocation()) &&
- //the framework bundle is always pre-installed,
don't display duplicate info
- !versionedId.equals(frameworkVersionedId)) {
- return
ReferenceWithError.newInstanceMaskingError(null, new
IllegalArgumentException("Bundle "+versionedId+" (from manifest " + manifestUrl
+ ") is already installed, from " + existingBundle.getLocation()));
- }
- return
ReferenceWithError.newInstanceMaskingError(existingBundle, new
IllegalArgumentException("Bundle "+versionedId+" from manifest " + manifestUrl
+ " is already installed"));
- }
-
- byte[] jar = buildExtensionBundle(manifest);
- LOG.debug("Installing boot bundle " + bundleUrl);
- //mark the bundle as extension so we can detect it later using
the "system:" protocol
- //(since we cannot access BundleImpl.isExtension)
- Bundle newBundle =
bundleContext.installBundle(EXTENSION_PROTOCOL + ":" + bundleUrl.toString(),
new ByteArrayInputStream(jar));
- installedBundles.put(versionedId, newBundle);
- return ReferenceWithError.newInstanceWithoutError(newBundle);
- } catch (Exception e) {
- Exceptions.propagateIfFatal(e);
- return ReferenceWithError.newInstanceThrowingError(null,
- new IllegalStateException("Problem installing extension
bundle " + manifestUrl + ": "+e, e));
- }
- }
-
- private static Manifest readManifest(URL manifestUrl) throws
IOException {
- Manifest manifest;
- InputStream in = null;
- try {
- in = manifestUrl.openStream();
- manifest = new Manifest(in);
- } finally {
- if (in != null) {
- try {in.close();}
- catch (Exception e) {};
- }
+ public static void ungetFramework(Framework framework) {
--- End diff --
The lifetime of the OSGi framework will not be controlled by Brooklyn, so
it makes sense to obtain the framework similarly to other OSGi services. Those
methods are get/ungetService, so I derived the names get/ungetFramework.
However, when running within the brooklyn launcher their effect is start/stop,
maintaining the previous semantics.
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