com.guardtime.ksi.publication.adapter.NonCachingPublicationsFileClientAdapter Maven / Gradle / Ivy

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/*
 * Copyright 2013-2018 Guardtime, Inc.
 *
 *  This file is part of the Guardtime client SDK.
 *
 *  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, CONDITIONS, OR OTHER LICENSES OF ANY KIND, either
 *  express or implied. See the License for the specific language governing
 *  permissions and limitations under the License.
 *  "Guardtime" and "KSI" are trademarks or registered trademarks of
 *  Guardtime, Inc., and no license to trademarks is granted; Guardtime
 *  reserves and retains all trademark rights.
 *
 */

package com.guardtime.ksi.publication.adapter;

import com.guardtime.ksi.exceptions.KSIException;
import com.guardtime.ksi.publication.PublicationsFile;
import com.guardtime.ksi.publication.PublicationsFileFactory;
import com.guardtime.ksi.service.Future;
import com.guardtime.ksi.service.client.KSIPublicationsFileClient;

import java.io.ByteArrayInputStream;
import java.nio.ByteBuffer;

/**
 * An adapter for publications file client. The publications file is fetched over the network on each KSI request
 * that needs a publication file.
 */
public class NonCachingPublicationsFileClientAdapter implements PublicationsFileClientAdapter {

    private final KSIPublicationsFileClient publicationsFileClient;
    private final PublicationsFileFactory publicationsFileFactory;

    /**
     * @param publicationsFileClient
     *         The publications file client that fetches the file.
     * @param publicationsFileFactory
     *         factory to use to parse publications file
     */
    public NonCachingPublicationsFileClientAdapter(KSIPublicationsFileClient publicationsFileClient, PublicationsFileFactory publicationsFileFactory) {
        this.publicationsFileClient = publicationsFileClient;
        this.publicationsFileFactory = publicationsFileFactory;
    }

    public PublicationsFile getPublicationsFile() throws KSIException {
        Future data = publicationsFileClient.getPublicationsFile();
        return publicationsFileFactory.create(new ByteArrayInputStream(data.getResult().array()));
    }

    public KSIPublicationsFileClient getPublicationsFileClient() {
        return publicationsFileClient;
    }
}