org.glassfish.tyrus.server.TyrusServerConfiguration Maven / Gradle / Ivy
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package org.glassfish.tyrus.server;
import java.lang.reflect.Modifier;
import java.util.Collections;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.websocket.DeploymentException;
import javax.websocket.Endpoint;
import javax.websocket.server.ServerApplicationConfig;
import javax.websocket.server.ServerEndpoint;
import javax.websocket.server.ServerEndpointConfig;
import org.glassfish.tyrus.core.ErrorCollector;
import org.glassfish.tyrus.core.ReflectionHelper;
/**
* Container for either deployed {@link ServerApplicationConfig}s, if any, or deployed classes.
*
* @author Stepan Kopriva (stepan.kopriva at oracle.com)
*/
public class TyrusServerConfiguration implements ServerApplicationConfig {
private static final Logger LOGGER = Logger.getLogger(TyrusServerConfiguration.class.getName());
private final Set serverEndpointConfigs = new HashSet();
private final Set> annotatedClasses = new HashSet>();
/**
* Create new {@link TyrusServerConfiguration}.
*
* @param classes classes to be included in this application instance. Can contain any combination of annotated
* endpoints (see {@link ServerEndpoint}). Cannot be {@code null}.
* @param serverEndpointConfigs List of instances of {@link ServerEndpointConfig} to be deployed.
* @throws IllegalArgumentException when any of the arguments is {@code null}.
*/
public TyrusServerConfiguration(Set> classes, Set serverEndpointConfigs) {
this(classes, Collections.>emptySet(), serverEndpointConfigs, new ErrorCollector());
}
/**
* Create new {@link TyrusServerConfiguration}.
*
* @param classes classes to be included in this application instance. Can contain any combination of annotated
* endpoints (see {@link ServerEndpoint}).
* @param dynamicallyAddedClasses dynamically deployed classes. See {@link javax.websocket.server.ServerContainer#addEndpoint(Class)}.
* @param serverEndpointConfigs List of instances of {@link ServerEndpointConfig} to be deployed.
* @param errorCollector model errors are reported to this instance. Cannot be {@code null}.
* @throws IllegalArgumentException when any of the arguments is {@code null}.
*/
public TyrusServerConfiguration(Set> classes, Set> dynamicallyAddedClasses,
Set serverEndpointConfigs, ErrorCollector errorCollector) {
if (classes == null || serverEndpointConfigs == null || errorCollector == null) {
throw new IllegalArgumentException();
}
this.serverEndpointConfigs.addAll(serverEndpointConfigs);
final Set configurations = new HashSet();
final Set> scannedProgramatics = new HashSet>();
final Set> scannedAnnotateds = new HashSet>();
for (Iterator> it = classes.iterator(); it.hasNext(); ) {
Class cls = it.next();
if (isAbstract(cls, errorCollector)) {
it.remove();
continue;
}
if (ServerApplicationConfig.class.isAssignableFrom(cls)) {
ServerApplicationConfig config = (ServerApplicationConfig) ReflectionHelper.getInstance(cls, errorCollector);
configurations.add(config);
}
if (Endpoint.class.isAssignableFrom(cls)) {
scannedProgramatics.add((Class) cls);
}
if (cls.isAnnotationPresent(ServerEndpoint.class)) {
scannedAnnotateds.add(cls);
}
}
// iterate through dynamically deployed classes
// main difference compared to "scanning" deployment is that all classes will be deployed, no matter if
// ServerApplicationConfig descendant is found.
for (Class c : dynamicallyAddedClasses) {
// not ifaces nor abstract classes
if (isAbstract(c, errorCollector)) {
continue;
}
// or add any @ServerEndpoint annotated class
if (c.isAnnotationPresent(ServerEndpoint.class)) {
annotatedClasses.add(c);
} else if(ServerApplicationConfig.class.isAssignableFrom(c)) {
ServerApplicationConfig config = (ServerApplicationConfig) ReflectionHelper.getInstance(c, errorCollector);
configurations.add(config);
// nothing else is expected/supported.
} else {
errorCollector.addException(new DeploymentException(String.format("Class %s is not ServerApplicationConfig descendant nor has @ServerEndpoint annotation.", c.getName())));
}
}
if (!configurations.isEmpty()) {
for (ServerApplicationConfig configuration : configurations) {
Set programmatic = configuration.getEndpointConfigs(scannedProgramatics);
programmatic = programmatic == null ? new HashSet() : programmatic;
this.serverEndpointConfigs.addAll(programmatic);
Set> annotated = configuration.getAnnotatedEndpointClasses(scannedAnnotateds);
annotated = annotated == null ? new HashSet>() : annotated;
annotatedClasses.addAll(annotated);
}
} else {
annotatedClasses.addAll(scannedAnnotateds);
}
}
private boolean isAbstract(Class clazz, ErrorCollector errorCollector) {
if (clazz.isInterface() || Modifier.isAbstract(clazz.getModifiers())) {
LOGGER.log(Level.WARNING, String.format("%s: Deployed class can't be abstract nor interface. The class will not be deployed.", clazz.getName()));
return true;
}
return false;
}
/**
* Gets all the {@link ServerEndpointConfig} classes which should be deployed.
*
* @param scanned is unused.
* @return all the {@link ServerEndpointConfig} classes which should be deployed.
*/
@Override
public Set getEndpointConfigs(Set> scanned) {
return Collections.unmodifiableSet(serverEndpointConfigs);
}
/**
* Gets all the classes annotated with {@link ServerEndpoint} annotation which should be deployed.
*
* @param scanned is unused.
* @return all the classes annotated with {@link ServerEndpoint} annotation which should be deployed.
*/
@Override
public Set> getAnnotatedEndpointClasses(Set> scanned) {
return Collections.unmodifiableSet(annotatedClasses);
}
}
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