org.os890.ds.addon.remote.impl.server.ServiceConfigUpdateTask.java Source code

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Here is the source code for org.os890.ds.addon.remote.impl.server.ServiceConfigUpdateTask.java

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/*
 * 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.os890.ds.addon.remote.impl.server;

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.apache.deltaspike.core.util.ExceptionUtils;
import org.apache.deltaspike.scheduler.api.Scheduled;
import org.os890.ds.addon.remote.impl.IgniteCacheProvider;
import org.os890.ds.addon.remote.spi.ServiceDescriptor;
import org.quartz.Job;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;

import javax.cache.Cache;
import javax.inject.Inject;
import javax.ws.rs.Path;
import java.lang.reflect.Method;
import java.util.Set;
import java.util.logging.Logger;

@Scheduled(cronExpression = "{service-config_update-schedule}", startScopes = { /*no additional scope-handling needed*/ })
public class ServiceConfigUpdateTask implements Job {
    private static final Logger LOG = Logger.getLogger(ServiceConfigUpdateTask.class.getName());

    @Inject
    private SimpleEndpointScannerExtension endpointScannerExtension;

    @Inject
    private IgniteCacheProvider cacheProvider;

    @Override
    public void execute(JobExecutionContext context) throws JobExecutionException {
        Set<Class> endpointClasses = endpointScannerExtension.getEndpointClasses();

        for (Class endpointClass : endpointClasses) {
            createCacheEntryFor(endpointClass);
        }
    }

    private void createCacheEntryFor(Class<?> beanClass) {
        Path path = beanClass.getAnnotation(Path.class);

        if (path != null) {
            ObjectMapper objectMapper = new ObjectMapper();

            for (Method method : beanClass.getDeclaredMethods()) {
                Path methodPath = method.getAnnotation(Path.class);

                if (methodPath != null) {
                    try {
                        ServiceDescriptor serviceDescriptor = ServiceDescriptorFactory.create(methodPath.value(),
                                path.value());
                        String serviceDescriptorAsJson = objectMapper.writeValueAsString(serviceDescriptor);
                        Cache<String, String> cache = cacheProvider.getCache();
                        String cachedValue = cache.get(serviceDescriptor.getKey());

                        if (!serviceDescriptorAsJson.equals(cachedValue)) {
                            cache.put(serviceDescriptor.getKey(), serviceDescriptorAsJson);
                        }
                        LOG.fine("cached endpoint descriptor: " + serviceDescriptor.getKey() + " -> "
                                + serviceDescriptorAsJson);
                    } catch (JsonProcessingException e) {
                        throw ExceptionUtils.throwAsRuntimeException(e);
                    }
                }
            }
        }
    }
}