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AmqpConnectionSigningExtension.java
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AmqpConnectionSigningExtension.java
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/*
* Copyright (c) 2021 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.connectivity.service.messaging.amqp;
import java.util.Collections;
import java.util.Map;
import java.util.stream.Collectors;
import org.eclipse.ditto.connectivity.model.ClientCertificateCredentials;
import org.eclipse.ditto.connectivity.model.CredentialsVisitor;
import org.eclipse.ditto.connectivity.model.HmacCredentials;
import org.eclipse.ditto.connectivity.model.MessageSendingFailedException;
import org.eclipse.ditto.connectivity.model.OAuthClientCredentials;
import org.eclipse.ditto.connectivity.model.SshPublicKeyCredentials;
import org.eclipse.ditto.connectivity.model.UserPasswordCredentials;
import org.eclipse.ditto.connectivity.service.config.Amqp10Config;
import org.eclipse.ditto.connectivity.service.config.DittoConnectivityConfig;
import org.eclipse.ditto.connectivity.service.messaging.signing.NoOpSigning;
import org.eclipse.ditto.internal.utils.config.DefaultScopedConfig;
import com.typesafe.config.Config;
import org.apache.pekko.actor.AbstractExtensionId;
import org.apache.pekko.actor.ActorSystem;
import org.apache.pekko.actor.ExtendedActorSystem;
import org.apache.pekko.actor.Extension;
import scala.collection.immutable.List$;
import scala.reflect.ClassTag;
/**
* Actor system extension to load the configured connection signing algorithms.
*/
public final class AmqpConnectionSigningExtension implements Extension, CredentialsVisitor<AmqpConnectionSigning> {
private static final Id ID = new Id();
private final Map<String, AmqpConnectionSigningFactory> registry;
private AmqpConnectionSigningExtension(final Map<String, AmqpConnectionSigningFactory> registry) {
this.registry = registry;
}
/**
* Lookup this actor system extension.
*
* @param system the actor system.
* @return this extension.
*/
public static AmqpConnectionSigningExtension get(final ActorSystem system) {
return ID.get(system);
}
@Override
public AmqpConnectionSigning clientCertificate(final ClientCertificateCredentials credentials) {
return NoOpSigning.INSTANCE;
}
@Override
public AmqpConnectionSigning usernamePassword(final UserPasswordCredentials credentials) {
return NoOpSigning.INSTANCE;
}
@Override
public AmqpConnectionSigning sshPublicKeyAuthentication(final SshPublicKeyCredentials credentials) {
return NoOpSigning.INSTANCE;
}
@Override
public AmqpConnectionSigning hmac(final HmacCredentials credentials) {
final AmqpConnectionSigningFactory factory = registry.get(credentials.getAlgorithm());
if (factory != null) {
return factory.createAmqpConnectionSigning(credentials);
} else {
throw MessageSendingFailedException.newBuilder()
.message("Failed to sign AMQP 1.0 connection.")
.description(String.format("The configured algorithm '%s' does not exist. Fix this by adding an" +
" implementation for it in the '%s' section of the amqp config.",
credentials.getAlgorithm(), Amqp10Config.Amqp10ConfigValue.HMAC_ALGORITHMS.getConfigPath()))
.build();
}
}
@Override
public AmqpConnectionSigning oauthClientCredentials(final OAuthClientCredentials credentials) {
return NoOpSigning.INSTANCE;
}
/**
* The extension ID.
*/
public static final class Id extends AbstractExtensionId<AmqpConnectionSigningExtension> {
private static AmqpConnectionSigningFactory instantiate(final ExtendedActorSystem system,
final String className) {
final ClassTag<AmqpConnectionSigningFactory> tag =
scala.reflect.ClassTag$.MODULE$.apply(AmqpConnectionSigningFactory.class);
return system.dynamicAccess().createInstanceFor(className, List$.MODULE$.empty(), tag).get();
}
@Override
public AmqpConnectionSigningExtension createExtension(final ExtendedActorSystem system) {
final Config config = system.settings().config();
final Map<String, String> hmacAlgorithms =
DittoConnectivityConfig.of(DefaultScopedConfig.dittoScoped(config))
.getConnectionConfig()
.getAmqp10Config()
.getHmacAlgorithms();
final Map<String, AmqpConnectionSigningFactory> factoryMap = hmacAlgorithms.entrySet()
.stream()
.collect(Collectors.toMap(Map.Entry::getKey, entry -> instantiate(system, entry.getValue())));
return new AmqpConnectionSigningExtension(Collections.unmodifiableMap(factoryMap));
}
}
}