com.thinkbiganalytics.scheduler.QuartzSchedulerClusterListener.java Source code

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Here is the source code for com.thinkbiganalytics.scheduler.QuartzSchedulerClusterListener.java

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package com.thinkbiganalytics.scheduler;

/*-
 * #%L
 * thinkbig-scheduler-quartz
 * %%
 * Copyright (C) 2017 ThinkBig Analytics
 * %%
 * 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.
 * #L%
 */

import com.thinkbiganalytics.cluster.ClusterService;
import com.thinkbiganalytics.cluster.ClusterServiceListener;

import org.apache.commons.lang3.BooleanUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.core.io.ClassPathResource;
import org.springframework.core.io.Resource;
import org.springframework.core.io.support.PropertiesLoaderUtils;

import java.io.IOException;
import java.util.List;
import java.util.Properties;

import javax.annotation.PostConstruct;
import javax.inject.Inject;

public class QuartzSchedulerClusterListener implements ClusterServiceListener {

    private static final Logger log = LoggerFactory.getLogger(QuartzSchedulerClusterListener.class);

    @Inject
    ClusterService clusterService;

    @PostConstruct
    private void init() {
        clusterService.subscribe(this);
    }

    @Override
    public void onClusterMembershipChanged(List<String> previousMembers, List<String> currentMembers) {

    }

    @Override
    public void onConnected(List<String> currentMembers) {
        validateQuartzClusterConfiguration();
    }

    @Override
    public void onDisconnected(List<String> currentMembers) {

    }

    @Override
    public void onClosed(List<String> currentMembers) {

    }

    private void validateQuartzClusterConfiguration() {
        Resource resource = new ClassPathResource("quartz.properties");
        if (resource.exists()) {
            try {
                Properties properties = PropertiesLoaderUtils.loadProperties(resource);
                Boolean isClustered = BooleanUtils
                        .toBoolean(properties.getProperty("org.quartz.jobStore.isClustered"));
                boolean isValid = isClustered;
                if (!isValid) {
                    log.error(
                            "Kylo is running in clustered mode by Quartz scheduler is not configured for clustered mode.  Please ensure the Quartz is configured for database persistence in clustered mode ");
                }
            } catch (IOException e) {
                log.error(
                        "Kylo is running in Clustered mode the system cannot find the 'quartz.properties' file.  Please ensure the Quartz is configured for database persistence in clustered mode",
                        e);
            }
        } else {
            log.error(
                    "Kylo is running in Clustered mode the system cannot find the 'quartz.properties' file. Please ensure the Quartz is configured for database persistence in clustered mode");
        }

    }
}