org.glassfish.jersey.server.ComponentProviderConfigurator Maven / Gradle / Ivy
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package org.glassfish.jersey.server;
import java.util.Collection;
import java.util.Comparator;
import java.util.stream.Collectors;
import java.util.stream.StreamSupport;
import org.glassfish.jersey.internal.BootstrapBag;
import org.glassfish.jersey.internal.BootstrapConfigurator;
import org.glassfish.jersey.internal.ServiceConfigurationError;
import org.glassfish.jersey.internal.ServiceFinder;
import org.glassfish.jersey.internal.inject.InjectionManager;
import org.glassfish.jersey.internal.util.collection.LazyValue;
import org.glassfish.jersey.internal.util.collection.Value;
import org.glassfish.jersey.internal.util.collection.Values;
import org.glassfish.jersey.model.internal.RankedComparator;
import org.glassfish.jersey.model.internal.RankedProvider;
import org.glassfish.jersey.server.spi.ComponentProvider;
/**
* Configurator which initializes and register {@link ComponentProvider} instances into {@link BootstrapBag}.
*
* @author Petr Bouda
*/
class ComponentProviderConfigurator implements BootstrapConfigurator {
private static final Comparator> RANKED_COMPARATOR =
new RankedComparator<>(RankedComparator.Order.DESCENDING);
@Override
public void init(InjectionManager injectionManager, BootstrapBag bootstrapBag) {
ServerBootstrapBag serverBag = (ServerBootstrapBag) bootstrapBag;
// There are situation in which ComponentProviders are not needed therefore their entire initialization is wrapped
// into a lazy block.
LazyValue> componentProviders =
Values.lazy((Value>) () -> getRankedComponentProviders().stream()
.map(RankedProvider::getProvider)
.peek(provider -> provider.initialize(injectionManager))
.collect(Collectors.toList()));
serverBag.setComponentProviders(componentProviders);
}
@Override
public void postInit(InjectionManager injectionManager, BootstrapBag bootstrapBag) {
ServerBootstrapBag serverBag = (ServerBootstrapBag) bootstrapBag;
serverBag.getComponentProviders().get().forEach(ComponentProvider::done);
}
private static Collection> getRankedComponentProviders() throws ServiceConfigurationError {
return StreamSupport.stream(ServiceFinder.find(ComponentProvider.class).spliterator(), false)
.map(RankedProvider::new)
.sorted(RANKED_COMPARATOR)
.collect(Collectors.toList());
}
}