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DefaultNamespaceProvider.java
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DefaultNamespaceProvider.java
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/*
* Copyright (c) 2022 Contributors to the Eclipse Foundation
*
* See the NOTICE file(s) distributed with this work for additional
* information regarding copyright ownership.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0
*
* SPDX-License-Identifier: EPL-2.0
*/
package org.eclipse.ditto.edge.api.dispatching;
import static org.eclipse.ditto.base.model.common.ConditionChecker.checkNotNull;
import org.eclipse.ditto.base.service.DittoExtensionPoint;
import org.eclipse.ditto.policies.model.signals.commands.modify.CreatePolicy;
import org.eclipse.ditto.things.model.signals.commands.modify.CreateThing;
import akka.actor.ActorSystem;
/**
* Determines the default namespace based on the given signal.
*/
public interface DefaultNamespaceProvider extends DittoExtensionPoint {
/**
* @param createThing The command that requires a default namespace.
* @return The default namespace.
*/
String getDefaultNamespace(CreateThing createThing);
/**
* @param createPolicy The command that requires a default namespace.
* @return The default namespace.
*/
String getDefaultNamespace(CreatePolicy createPolicy);
static DefaultNamespaceProvider get(final ActorSystem actorSystem) {
checkNotNull(actorSystem, "actorSystem");
return ExtensionId.INSTANCE.get(actorSystem);
}
final class ExtensionId extends DittoExtensionPoint.ExtensionId<DefaultNamespaceProvider> {
private static final String CONFIG_PATH = "ditto.entity-creation.default-namespace-provider";
private static final ExtensionId INSTANCE = new ExtensionId(DefaultNamespaceProvider.class);
private ExtensionId(final Class<DefaultNamespaceProvider> parentClass) {
super(parentClass);
}
@Override
protected String getConfigPath() {
return CONFIG_PATH;
}
}
}