org.wildfly.naming.client.NamingProvider Maven / Gradle / Ivy
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*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
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*
* This software is distributed in the hope that it will be useful,
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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*/
package org.wildfly.naming.client;
import java.net.URI;
import java.util.function.BiFunction;
import javax.naming.NamingException;
import org.wildfly.common.function.ExceptionBiFunction;
import org.wildfly.security.auth.client.PeerIdentity;
/**
* A provider for a single naming scheme. Each implementation of a naming provider has different characteristics.
*
* @author David M. Lloyd
*/
public interface NamingProvider extends AutoCloseable {
/**
* Get the provider URI of this provider.
*
* @return the provider URI of this provider (must not be {@code null})
*/
URI getProviderUri();
/**
* Get the peer identity to use for context operations. The identity may be fixed or it may vary, depending on the context configuration.
*
* @return the peer identity to use (must not be {@code null})
* @throws NamingException if connecting, authenticating, or re-authenticating the peer failed
*/
PeerIdentity getPeerIdentityForNaming() throws NamingException;
/**
* Get the current naming provider being used for the current deserialization operation.
*
* @return the current naming provider, or {@code null} if no provider-related deserialization is occurring
*/
static NamingProvider getCurrentNamingProvider() {
return CurrentNamingProvider.getCurrent();
}
/**
* Perform an action under the current naming provider.
*
* @param function the function to apply (must not be {@code null})
* @param arg1 the first argument
* @param arg2 the second argument
* @param the first argument type
* @param the second argument type
* @param the function return type
* @return the function return value
*/
default R performAction(BiFunction function, T arg1, U arg2) {
final NamingProvider old = CurrentNamingProvider.getAndSetCurrent(this);
try {
return function.apply(arg1, arg2);
} finally {
CurrentNamingProvider.setCurrent(old);
}
}
/**
* Perform an action under the current naming provider.
*
* @param function the function to apply (must not be {@code null})
* @param arg1 the first argument
* @param arg2 the second argument
* @param the first argument type
* @param the second argument type
* @param the function return type
* @param the function exception type
* @return the function return value
* @throws E if the function throws an exception of the given type
*/
default R performExceptionAction(ExceptionBiFunction function, T arg1, U arg2) throws E {
final NamingProvider old = CurrentNamingProvider.getAndSetCurrent(this);
try {
return function.apply(arg1, arg2);
} finally {
CurrentNamingProvider.setCurrent(old);
}
}
/**
* Close the provider. This method is called when the corresponding {@code InitialContext} is closed. This method
* should be idempotent.
*
* @throws NamingException if an error occurred while closing this provider
*/
default void close() throws NamingException {
}
}