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Kathra Catalog Updater
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/* 
 * Copyright 2019 The Kathra Authors.
 *
 * 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.
 *
 * Contributors:
 *
 *    IRT SystemX (https://www.kathra.org/)    
 *
 */

package org.kathra.api;

import io.fabric8.kubernetes.api.model.ConfigMap;
import io.fabric8.kubernetes.api.model.ConfigMapList;
import io.fabric8.kubernetes.client.DefaultKubernetesClient;
import io.fabric8.kubernetes.client.KubernetesClient;
import io.fabric8.kubernetes.client.Watch;
import io.fabric8.kubernetes.client.Watcher;
import io.fabric8.kubernetes.client.dsl.FilterWatchListDeletable;
import org.apache.commons.io.FileUtils;
import org.apache.commons.io.IOCase;
import org.apache.commons.io.IOUtils;
import org.apache.commons.io.filefilter.FileFilterUtils;
import org.yaml.snakeyaml.Yaml;

import org.kathra.api.Config;

import java.io.File;
import java.util.Collection;
import java.util.Map;


public class KathraCatalogUpdater {
    private Config config = null;
    protected static KubernetesClient client = new DefaultKubernetesClient();

    static Yaml yaml = new Yaml();

    public static void main(String[] args) throws Exception {

        Config config = new Config();
        config.initConfig();

        String domain = config.getDomain();
        if(domain==null) domain  = "irtsystemx.org";
        String protocol = config.getProtocol();
        if(protocol == null || protocol.equals("")) protocol  = "http";
        String namespace = client.getNamespace();
        if(namespace==null || namespace.equals("")) namespace = "kathra-catalog";

        File[] directories = new File("/data/kathra-catalog/stable").listFiles(File::isDirectory);

        FilterWatchListDeletable> cmDel = client.configMaps().inNamespace(namespace).withLabel("kind", "catalog");

        if(cmDel.list().getItems()!=null) cmDel.delete();

        for(File dir : directories) {
            System.out.print("Parsing : "+dir.getName()+" -> ");
            File configMapFile = FileUtils.getFile(dir, "configmap.yml");
            if(!configMapFile.exists()) {
                configMapFile = FileUtils.getFile(dir, "configmap.yaml");
            }
            String configMapContent = FileUtils.readFileToString(configMapFile);

            Map configMap = (Map) yaml.load(configMapContent);
            if(configMap==null) {
                System.out.println("ERROR");
                continue;
            }

            ConfigMap cm = client.configMaps().load(IOUtils.toInputStream(yaml.dump(configMap))).get();

            Collection icons = FileUtils.listFiles(dir, FileFilterUtils.prefixFileFilter("icon.", IOCase.INSENSITIVE), null);
            String iconName = null;
            for(File icon : icons) {
                iconName = icon.getName();
            }

            cm.getMetadata().getAnnotations().put("kathra.icon", protocol + "://icons." + namespace + "." + domain +"/kathra-catalog/stable/"+dir.getName()+"/"+iconName);

            client.resource(cm).inNamespace(namespace).createOrReplace();
            System.out.println("SUCCESS");
        }
    }
}