public String[] getServices() {
if (m_componentMetadata.getServiceMetadata() != null) {
return m_componentMetadata.getServiceMetadata().getProvides();
}
return null;
}
private List<DependencyManager<S, ?>> loadDependencyManagers(ComponentMetadata metadata) {
List<DependencyManager<S, ?>> depMgrList =
new ArrayList<DependencyManager<S, ?>>(metadata.getDependencies().size());
// If this component has got dependencies, create dependency managers for each one of them.
if (metadata.getDependencies().size() != 0) {
int index = 0;
for (ReferenceMetadata currentdependency : metadata.getDependencies()) {
DependencyManager<S, ?> depmanager =
new DependencyManager(this, currentdependency, index++);
depMgrList.add(depmanager);
}
}
return depMgrList;
}
/**
* Method to actually emit the log message. If the LogService is available, the message will be
* logged through the LogService. Otherwise the message is logged to stdout (or stderr in case of
* LOG_ERROR level messages),
*
* @param level The log level to log the message at
* @param message The message to log
* @param ex An optional <code>Throwable</code> whose stack trace is written, or <code>null</code>
* to not log a stack trace.
*/
public void log(int level, String message, ComponentMetadata metadata, Throwable ex) {
if (isLogEnabled(level)) {
// prepend the metadata name to the message
if (metadata != null) {
message = "[" + metadata.getName() + "] " + message;
}
Object logger = m_logService.getService();
if (logger == null) {
Activator.log(level, getBundleContext().getBundle(), message, ex);
} else {
((LogService) logger).log(level, message, ex);
}
}
}
private void loadDescriptor(final URL descriptorURL) {
// simple path for log messages
final String descriptorLocation = descriptorURL.getPath();
InputStream stream = null;
try {
stream = descriptorURL.openStream();
BufferedReader in = new BufferedReader(new InputStreamReader(stream));
XmlHandler handler = new XmlHandler(m_context.getBundle(), this);
KXml2SAXParser parser;
parser = new KXml2SAXParser(in);
parser.parseXML(handler);
// 112.4.2 Component descriptors may contain a single, root component element
// or one or more component elements embedded in a larger document
Iterator i = handler.getComponentMetadataList().iterator();
while (i.hasNext()) {
ComponentMetadata metadata = (ComponentMetadata) i.next();
try {
// check and reserve the component name
m_componentRegistry.checkComponentName(metadata.getName());
// validate the component metadata
metadata.validate(this);
// Request creation of the component manager
ComponentHolder holder = m_componentRegistry.createComponentHolder(this, metadata);
// register the component after validation
m_componentRegistry.registerComponentHolder(metadata.getName(), holder);
m_managers.add(holder);
// enable the component
if (metadata.isEnabled()) {
holder.enableComponents();
}
} catch (Throwable t) {
// There is a problem with this particular component, we'll log the error
// and proceed to the next one
log(LogService.LOG_ERROR, "Cannot register Component", metadata, t);
// make sure the name is not reserved any more
m_componentRegistry.unregisterComponentHolder(metadata.getName());
}
}
} catch (IOException ex) {
// 112.4.1 If an XML document specified by the header cannot be located in the bundle and its
// attached
// fragments, SCR must log an error message with the Log Service, if present, and continue.
log(
LogService.LOG_ERROR,
"Problem reading descriptor entry ''{0}''",
new Object[] {descriptorLocation},
null,
ex);
} catch (Exception ex) {
log(
LogService.LOG_ERROR,
"General problem with descriptor entry ''{0}''",
new Object[] {descriptorLocation},
null,
ex);
} finally {
if (stream != null) {
try {
stream.close();
} catch (IOException ignore) {
}
}
}
}
public boolean isServiceFactory() {
return m_componentMetadata.getServiceMetadata() != null
&& m_componentMetadata.getServiceMetadata().isServiceFactory();
}
public boolean isConfigurationPidDeclared() {
return m_componentMetadata.isConfigurationPidDeclared();
}
public String getConfigurationPid() {
return m_componentMetadata.getConfigurationPid();
}
public String getModified() {
return m_componentMetadata.getModified();
}
public boolean isDeactivateDeclared() {
return m_componentMetadata.isDeactivateDeclared();
}
public String getDeactivate() {
return m_componentMetadata.getDeactivate();
}
public boolean isDefaultEnabled() {
return m_componentMetadata.isEnabled();
}
public boolean isImmediate() {
return m_componentMetadata.isImmediate();
}
public String getFactory() {
return m_componentMetadata.getFactoryIdentifier();
}
public String getClassName() {
return m_componentMetadata.getImplementationClassName();
}
public String getName() {
return m_componentMetadata.getName();
}
protected AbstractComponentManager(
BundleComponentActivator activator,
ComponentMetadata metadata,
ComponentMethods componentMethods,
boolean factoryInstance) {
m_factoryInstance = factoryInstance;
m_activator = activator;
m_componentMetadata = metadata;
this.m_componentMethods = componentMethods;
m_componentId = -1;
m_dependencyManagers = loadDependencyManagers(metadata);
m_stateLock = new ReentrantLock(true);
// dump component details
if (isLogEnabled(LogService.LOG_DEBUG)) {
log(
LogService.LOG_DEBUG,
"Component {0} created: DS={1}, implementation={2}, immediate={3}, default-enabled={4}, factory={5}, configuration-policy={6}, activate={7}, deactivate={8}, modified={9} configuration-pid={10}",
new Object[] {
metadata.getName(),
metadata.getNamespaceCode(),
metadata.getImplementationClassName(),
metadata.isImmediate(),
metadata.isEnabled(),
metadata.getFactoryIdentifier(),
metadata.getConfigurationPolicy(),
metadata.getActivate(),
metadata.getDeactivate(),
metadata.getModified(),
metadata.getConfigurationPid()
},
null);
if (metadata.getServiceMetadata() != null) {
log(
LogService.LOG_DEBUG,
"Component {0} Services: servicefactory={1}, services={2}",
new Object[] {
metadata.getName(),
Boolean.valueOf(metadata.getServiceMetadata().isServiceFactory()),
Arrays.asList(metadata.getServiceMetadata().getProvides())
},
null);
}
if (metadata.getProperties() != null) {
log(
LogService.LOG_DEBUG,
"Component {0} Properties: {1}",
new Object[] {metadata.getName(), metadata.getProperties()},
null);
}
}
}
