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A web service test double for all occasions - standalone edition

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/*
 * Copyright (C) 2011 Thomas Akehurst
 *
 * 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 com.github.tomakehurst.wiremock.common.ssl;

import com.github.tomakehurst.wiremock.common.Exceptions;

import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;

public class KeyStoreSourceFactory {

    @SuppressWarnings("unchecked")
    public static KeyStoreSource getAppropriateForJreVersion(String path, String keyStoreType, char[] keyStorePassword) {
        try {
            final Class theClass = (Class) Class.forName("com.github.tomakehurst.wiremock.jetty94.WritableFileOrClasspathKeyStoreSource");
            return safelyGetConstructor(theClass, String.class, String.class, char[].class).newInstance(path, keyStoreType, keyStorePassword);
        } catch (ClassNotFoundException | IllegalAccessException | InstantiationException | InvocationTargetException e) {
            return new ReadOnlyFileOrClasspathKeyStoreSource(path, keyStoreType, keyStorePassword);
        }
    }

    @SuppressWarnings("unchecked")
    private static  Constructor safelyGetConstructor(Class clazz, Class... parameterTypes) {
        try {
            return clazz.getConstructor(parameterTypes);
        } catch (NoSuchMethodException e) {
            return Exceptions.throwUnchecked(e, Constructor.class);
        }
    }
}