src/main/java/org/apache/sling/distribution/packaging/DistributionPackageImporter.java

/*
 * 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.sling.distribution.packaging;

import javax.annotation.CheckForNull;
import javax.annotation.Nonnull;
import java.io.InputStream;

import aQute.bnd.annotation.ConsumerType;
import org.apache.sling.api.resource.ResourceResolver;

/**
 * A {@link DistributionPackageImporter} is responsible for importing
 * {@link DistributionPackage}s into the resource tree.
 */
@ConsumerType
public interface DistributionPackageImporter {

    /**
     * Imports the given distribution package into the underlying system
     *
     * @param resourceResolver    - the resource resolver used to import the resources
     * @param distributionPackage - the package to be imported
     * @throws DistributionPackageImportException if any error occurs during import
     */
    void importPackage(@Nonnull ResourceResolver resourceResolver, @Nonnull DistributionPackage distributionPackage) throws DistributionPackageImportException;

    /**
     * Tries to convert an {@link java.io.InputStream} to a {@link DistributionPackage} and then imports it into the underlying system
     *
     * @param resourceResolver - the resource resolver used to read the package
     * @param stream           the {@link InputStream} of the package to be converted and installed
     * @return a {@link DistributionPackage} if the stream has been successfully converted and installed
     * @throws DistributionPackageImportException when the stream cannot be read as a {@link DistributionPackage} and installed
     */
    @CheckForNull
    DistributionPackage importStream(@Nonnull ResourceResolver resourceResolver, @Nonnull InputStream stream) throws DistributionPackageImportException;

}