org.glassfish.jersey.inject.hk2.Hk2InjectionManagerFactory Maven / Gradle / Ivy
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/*
* Copyright (c) 2017, 2020 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0, which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the
* Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
* version 2 with the GNU Classpath Exception, which is available at
* https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
*/
package org.glassfish.jersey.inject.hk2;
import java.security.AccessController;
import jakarta.annotation.Priority;
import org.glassfish.jersey.internal.inject.Bindings;
import org.glassfish.jersey.internal.inject.InjectionManager;
import org.glassfish.jersey.internal.inject.InjectionManagerFactory;
import org.glassfish.jersey.internal.util.PropertiesHelper;
/**
* Factory which is able to create {@link InjectionManager} instance using service loading and automatically initialize injection
* manager using {@code parent} or immediately registers binder.
*/
@Priority(10)
public class Hk2InjectionManagerFactory implements InjectionManagerFactory {
/**
* Hk2 Injection manager strategy.
*
* Value can be supplied only via java properties, which would typically be done using '-D' parameter,
* for example: {@code java -Dorg.glassfish.jersey.hk2.injection.manager.strategy=delayed ...}
*
* Valid values are "immediate" and "delayed" and values are case-insensitive.
*
* Default value is "immediate".
*/
public static final String HK2_INJECTION_MANAGER_STRATEGY = "org.glassfish.jersey.hk2.injection.manager.strategy";
private enum Hk2InjectionManagerStrategy {
/**
* @see ImmediateHk2InjectionManager
*/
IMMEDIATE {
@Override
InjectionManager createInjectionManager(final Object parent) {
return new ImmediateHk2InjectionManager(parent);
}
},
/**
* @see DelayedHk2InjectionManager
*/
DELAYED {
@Override
InjectionManager createInjectionManager(final Object parent) {
return new DelayedHk2InjectionManager(parent);
}
};
abstract InjectionManager createInjectionManager(Object parent);
}
@Override
public InjectionManager create(Object parent) {
return initInjectionManager(getStrategy().createInjectionManager(parent));
}
/**
* Check HK2 Strategy property {@link #HK2_INJECTION_MANAGER_STRATEGY} and returns {@code true} if the current HK2 Strategy is
* "immediate".
*
* @return {@code true} if the current HK2 Strategy is "immediate".
*/
public static boolean isImmediateStrategy() {
return getStrategy() == Hk2InjectionManagerStrategy.IMMEDIATE;
}
private static Hk2InjectionManagerStrategy getStrategy() {
String value = AccessController.doPrivileged(PropertiesHelper.getSystemProperty(HK2_INJECTION_MANAGER_STRATEGY));
if (value == null || value.isEmpty()) {
return Hk2InjectionManagerStrategy.IMMEDIATE;
}
if ("immediate".equalsIgnoreCase(value)) {
return Hk2InjectionManagerStrategy.IMMEDIATE;
} else if ("delayed".equalsIgnoreCase(value)) {
return Hk2InjectionManagerStrategy.DELAYED;
} else {
throw new IllegalStateException("Illegal value of " + HK2_INJECTION_MANAGER_STRATEGY
+ ". Expected \"immediate\" or \"delayed\", the actual value is: " + value);
}
}
private InjectionManager initInjectionManager(InjectionManager injectionManager) {
injectionManager.register(Bindings.service(injectionManager).to(InjectionManager.class));
return injectionManager;
}
}