io.tapack.satisfy.steps.spi.EmailSpiFactory Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of satisfy-email-steps Show documentation
There is a newer version: 0.6.6
/*
 * Copyright © 2015 Tapack, and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * The Research Projects is dual-licensed under the GNU General Public
 * License, version 2.0 (GPLv2) and the Tapack Commercial License.
 *
 * Solely for non-commercial purposes. A purpose is non-commercial only if
 * it is in no manner primarily intended for or directed toward commercial
 * advantage or private monetary compensation.
 *
 * This Tapack Software is supplied to you by Tapack in consideration of your
 * agreement to the following terms, and your use, installation, modification
 * or redistribution of this Tapack Software constitutes acceptance of these
 * terms. If you do not agree with these terms, please do not use, install,
 * modify or redistribute this Tapack Software.
 *
 * Neither the name, trademarks, service marks or logos of Tapack may be used
 * to endorse or promote products derived from the Tapack Software without
 * specific prior written permission from Tapack.
 *
 * The Tapack Software is provided by Tapack on an "AS IS" basis. TAPACK MAKES NO
 * WARRANTIES, EXPRESS  OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED
 * WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE, REGARDING THE TAPACK SOFTWARE OR ITS USE AND OPERATION ALONE OR IN
 * COMBINATION WITH YOUR PRODUCTS.
 *
 * IN NO EVENT SHALL TAPACK BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL
 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, MODIFICATION
 * AND/OR DISTRIBUTION OF THE TAPACK SOFTWARE, HOWEVER CAUSED AND WHETHER UNDER
 * THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE), STRICT LIABILITY OR
 * OTHERWISE, EVEN IF TAPACK HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * A copy of the GNU General Public License is included in the distribution in
 * the file LICENSE and at
 *
 *     http://www.gnu.org/licenses/gpl-2.0.html
 *
 * If you are using the Research Projects for commercial purposes, we
 * encourage you to visit
 *
 *     http://products.tapack.io/license
 *
 * for more details.
 *
 * This software or hardware and documentation may provide access to
 * or information on content, products, and services from third parties.
 * Tapack and its affiliates are not responsible for and expressly disclaim
 * all warranties of any kind with respect to third-party content, products,
 * and services. Tapack and its affiliates will not be responsible for any loss,
 * costs, or damages incurred due to your access to or use of third-party
 * content, products, or services. If a third-party content exists, the
 * additional copyright notices and license terms applicable to portions of the
 * software are set forth in the THIRD_PARTY_LICENSE_README file.
 *
 * Please contact Tapack or visit www.tapack.io if you need additional
 * information or have any questions.
 */

package io.tapack.satisfy.steps.spi;

import io.tapack.satisfy.steps.email.EmailSenderSMTPS;
import io.tapack.satisfy.steps.email.FakeEmailServerRunnerImpl;
import io.tapack.satisfy.steps.email.InboxMessagesInspectorPOP3S;
import org.apache.commons.lang3.ClassUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.List;
import java.util.ServiceLoader;

import static io.tapack.satisfy.email.props.PropertyAccessor.*;

public class EmailSpiFactory {
    private static Logger LOG = LoggerFactory.getLogger(EmailSpiFactory.class);

    private EmailSpiFactory() {
    }

    public static FakeEmailServerRunner getFakeEmailServerRunner() {
        return loadProvider(getUseFakeProperty(), FakeEmailServerRunner.class, FakeEmailServerRunnerImpl.class);
    }

    public static EmailSender getEmailSender() {
        return loadProvider(getSendingProtocol(), EmailSender.class, EmailSenderSMTPS.class);
    }

    public static InboxMessagesInspector getInboxMessagesInspector() {
        return loadProvider(getReceiveProtocol(), InboxMessagesInspector.class, InboxMessagesInspectorPOP3S.class);
    }

    private static  LoadType loadProvider(String param, Class typeClass, Class basicImplClass) {
        ServiceLoader loadTypes = ServiceLoader.load(typeClass);
        for (LoadType loadType : loadTypes) {
            if (loadType.accept(param)) {
                LOG.debug("LOADED IMPLEMENTATION FOR " + typeClass.getSimpleName() + " IS " + loadType.getClass().getName());
                return loadType;
            }
        }
        return createBasicImplInstance(basicImplClass);
    }

    private static  LoadType createBasicImplInstance(Class basicImplClass) {
        LoadType basicImpl = null;
        try {
            basicImpl = basicImplClass.newInstance();
        } catch (InstantiationException e) {
            logError(basicImplClass, e);
        } catch (IllegalAccessException e) {
            logError(basicImplClass, e);
        }
        logWarning(basicImplClass, basicImpl);
        return basicImpl;
    }

    private static  void logWarning(Class basicImplClass, LoadType basicImpl) {
        StringBuilder warn = new StringBuilder();
        warn.append("ServiceLoader can not find acceptable implementation, the instance of ")
                .append("\n")
                .append(basicImpl == null ? "null" : basicImpl.getClass().getName())
                .append(" will be returned for ")
                .append(getSimpleInterfaceName(basicImplClass));
        LOG.warn(warn.toString());
    }

    private static String getSimpleInterfaceName(Class basicImplClass) {
        List> list = ClassUtils.getAllInterfaces(basicImplClass);
        for (Class interfaceImplemented : list) {
            if (!interfaceImplemented.getSimpleName().equals("LoadAcceptor"))
                return interfaceImplemented.getSimpleName();
        }
        return "LoadAcceptor";
    }

    private static  void logError(Class basicImplClass, Exception e) {
        LOG.error(" Can't create basicImpl for class" + basicImplClass.getName() + "  " + e.getCause().toString());
    }
}