/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.qpid.proton4j.engine.sasl.client;

import java.security.Principal;

/**
 * Interface for a supplier of login credentials used by the SASL Authenticator to
 * select and configure the client SASL mechanism.
 */
public interface SaslCredentialsProvider {

    String vhost();

    String username();

    String password();

    Principal localPrincipal();

}

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.qpid.proton4j.engine.sasl.client;

import java.security.Principal;
import java.util.Collections;
import java.util.Map;

/**
 * Interface for a supplier of login credentials used by the SASL Authenticator to
 * select and configure the client SASL mechanism.
 */
public interface SaslCredentialsProvider {

    String vhost();

    String username();

    String password();

    Principal localPrincipal();

    @SuppressWarnings("unchecked")
    default Map<String, Object> options() {
        return Collections.EMPTY_MAP;
    }
}

Allow the SASL credentials provider to provide extra configuration
Allow the SASL credentials provider to provide extra configuration

Some mechanisms might require external configuration data so we should
provide an optional API to allow that to be gathered from a mechanism.