/*
* 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.ambari.server.state.quicklinksprofile;
import java.io.IOException;
import javax.annotation.Nullable;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* This factory returns the quicklinks visibility controller. If the received string is a parseable and valid quicklinks
* profile, a {@link DefaultQuickLinkVisibilityController} will be returned based on the profile. If the string is
* {@code null} or invalid {@link ShowAllLinksVisibilityController} will be returned that displays all links which
* corresponds to the legacy behavior.
*/
public class QuickLinkVisibilityControllerFactory {
private static final Logger LOG = LoggerFactory.getLogger(QuickLinkVisibilityControllerFactory.class);
/**
* @param quickLinkProfileJson the quick links profile or {@code null} if no profile is set
* @return a {@link DefaultQuickLinkVisibilityController} if the profile exists and is valid, {@link ShowAllLinksVisibilityController}
* otherwise.
*/
public static QuickLinkVisibilityController get(@Nullable String quickLinkProfileJson) {
if (null == quickLinkProfileJson) {
LOG.info("No quick link profile is set, will display all quicklinks.");
return new ShowAllLinksVisibilityController();
}
try {
QuickLinksProfile profile = new QuickLinksProfileParser().parse(quickLinkProfileJson.getBytes());
return new DefaultQuickLinkVisibilityController(profile);
}
catch (IOException | QuickLinksProfileEvaluationException ex) {
LOG.error("Unable to parse quick link profile json: " + quickLinkProfileJson, ex);
return new ShowAllLinksVisibilityController();
}
}
}