google.registry.flows.domain.RegistryExtraFlowLogicProxy.java Source code

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Here is the source code for google.registry.flows.domain.RegistryExtraFlowLogicProxy.java

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// Copyright 2016 The Nomulus Authors. All Rights Reserved.
//
// Licensed 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 google.registry.flows.domain;

import com.google.common.base.Optional;
import google.registry.flows.EppException;
import google.registry.flows.EppException.CommandFailedException;
import google.registry.model.domain.DomainBase;
import google.registry.model.registry.Registry;
import java.util.HashMap;
import javax.annotation.Nullable;

/**
 * Static class to return the correct {@link RegistryExtraFlowLogic} for a particular TLD.
 * Eventually, this will probably be replaced with dependency injection, barring unforeseen
 * complications.
 */
public class RegistryExtraFlowLogicProxy {

    private static final HashMap<String, Class<? extends RegistryExtraFlowLogic>> extraLogicOverrideMap = new HashMap<>();

    public static void setOverride(String tld, Class<? extends RegistryExtraFlowLogic> extraLogicClass) {
        if (Registry.get(tld) == null) {
            throw new IllegalArgumentException(tld + " does not exist");
        }
        extraLogicOverrideMap.put(tld, extraLogicClass);
    }

    public static <D extends DomainBase> Optional<RegistryExtraFlowLogic> newInstanceForDomain(@Nullable D domain)
            throws EppException {
        if (domain == null) {
            return Optional.absent();
        } else {
            return newInstanceForTld(domain.getTld());
        }
    }

    public static Optional<RegistryExtraFlowLogic> newInstanceForTld(String tld) throws EppException {
        if (extraLogicOverrideMap.containsKey(tld)) {
            try {
                return Optional
                        .<RegistryExtraFlowLogic>of(extraLogicOverrideMap.get(tld).getConstructor().newInstance());
            } catch (ReflectiveOperationException ex) {
                throw new CommandFailedException();
            }
        }
        return Optional.absent();
    }
}