net.yetamine.pet4bnd.model.LoggingResolver Maven / Gradle / Ivy

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/*
 * Copyright 2016 Yetamine
 *
 * 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 net.yetamine.pet4bnd.model;

import java.util.Objects;
import java.util.function.Consumer;

/**
 * The default resolving strategy providing full feedback about the process.
 */
public final class LoggingResolver extends VersionResolver {

    /** Feedback for logging problems. */
    private final Consumer feedback;

    /**
     * Creates a new instance.
     *
     * @param resolutionTarget
     *            the bundle to resolve. It must not be {@code null}.
     * @param resolutionFeedback
     *            the feedback interface to use. It must not be {@code null}.
     */
    public LoggingResolver(Bundle resolutionTarget, Consumer resolutionFeedback) {
        super(resolutionTarget);
        feedback = Objects.requireNonNull(resolutionFeedback);
    }

    /**
     * @see net.yetamine.pet4bnd.model.VersionResolver#constraintViolated(net.yetamine.pet4bnd.model.PackageExport)
     */
    @Override
    protected boolean constraintViolated(PackageExport export) {
        final PackageVersion version = export.version();
        final String f = "Package '%s': target version %s violates version constraint %s.";
        feedback.accept(String.format(f, export.packageName(), version.resolution(), version.constraint().get()));
        return false;
    }

    /**
     * @see net.yetamine.pet4bnd.model.VersionResolver#constraintViolated()
     */
    @Override
    protected void constraintViolated() {
        final BundleVersion version = bundle().version();
        final String f = "Target bundle version %s violates version restriction to %s.";
        feedback.accept(String.format(f, version.resolution(), version.constraint().get()));
    }
}