com.hillert.botanic.MainApp.java Source code

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Here is the source code for com.hillert.botanic.MainApp.java

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/*
 * Copyright 2014 the original author or 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.
 */
package com.hillert.botanic;

import javax.servlet.MultipartConfigElement;

import java.net.URI;
import java.text.DateFormat;
import java.util.HashMap;
import java.util.Map;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;
import com.hillert.botanic.model.Garden;
import com.hillert.botanic.model.Image;
import com.hillert.botanic.model.Plant;
import com.hillert.botanic.service.SeedDataService;
import com.hillert.botanic.support.ISO8601DateFormatWithMilliSeconds;

import org.apache.catalina.connector.Connector;
import org.apache.coyote.http11.AbstractHttp11Protocol;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.context.embedded.ConfigurableEmbeddedServletContainer;
import org.springframework.boot.context.embedded.EmbeddedServletContainerCustomizer;
import org.springframework.boot.context.embedded.MultipartConfigFactory;
import org.springframework.boot.context.embedded.tomcat.TomcatConnectorCustomizer;
import org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainerFactory;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Primary;
import org.springframework.core.env.MapPropertySource;
import org.springframework.data.rest.core.config.RepositoryRestConfiguration;
import org.springframework.data.rest.webmvc.config.RepositoryRestMvcConfiguration;
import org.springframework.http.MediaType;
import org.springframework.util.SocketUtils;

/**
 * @author Gunnar  Hillert
 * @author Thomas Darimont
 * @since 1.0
 */
@SpringBootApplication
public class MainApp extends RepositoryRestMvcConfiguration {

    public static final String MAXIMUM_FILE_SIZE = "8192KB";
    public static final String GZIP_COMPRESSION_MIME_TYPES = MediaType.APPLICATION_JSON_VALUE + ","
            + "application/javascript" + "," + "text/css";

    /**
     * Sets the base URL for the REST API. Also ensure that the primary IDs of
     * the domain classes are serialized as part of the JSON response.
     */
    @Override
    protected void configureRepositoryRestConfiguration(RepositoryRestConfiguration config) {
        config.exposeIdsFor(Plant.class, Image.class, Garden.class);
        config.setBaseUri(URI.create("/api"));
    }

    /**
     * Main class initializes the Spring Application Context and populates seed
     * data using {@link SeedDataService}.
     *
     * @param args Not used.
     */
    public static void main(String[] args) {
        Map<String, Object> props = new HashMap<String, Object>();
        props.put("redisPort", SocketUtils.findAvailableTcpPort());

        SpringApplication app = new SpringApplication(MainApp.class);
        app.setDefaultProperties(props);

        ConfigurableApplicationContext context = app.run(args);

        MapPropertySource propertySource = new MapPropertySource("ports", props);

        context.getEnvironment().getPropertySources().addFirst(propertySource);

        SeedDataService seedDataService = context.getBean(SeedDataService.class);
        seedDataService.populateSeedData();
    }

    /**
     * Configure the {@link MultipartConfigFactory#setMaxFileSize(String)} and
     * {@link MultipartConfigFactory#setMaxRequestSize(String)} using a value of
     * {@link MainApp#MAXIMUM_FILE_SIZE}.
     *
     * @return The created {@link MultipartConfigElement} instance
     */
    @Bean
    MultipartConfigElement multipartConfigElement() {
        MultipartConfigFactory factory = new MultipartConfigFactory();
        factory.setMaxFileSize(MAXIMUM_FILE_SIZE);
        factory.setMaxRequestSize(MAXIMUM_FILE_SIZE);
        return factory.createMultipartConfig();
    }

    /**
     * Configure the Jackson {@link ObjectMapper}. Use the {@link ISO8601DateFormatWithMilliSeconds}
     * to set a custom {@link DateFormat} ensuring that JSON Data are serialized
     * using the {@code ISO8601} format.
     */
    @Bean
    @Primary
    public ObjectMapper objectMapper() {
        ObjectMapper objectMapper = super.objectMapper();
        objectMapper.configure(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS, false);
        objectMapper.setDateFormat(new ISO8601DateFormatWithMilliSeconds());
        return objectMapper;
    }

    @Bean
    public org.springframework.http.converter.json.MappingJackson2HttpMessageConverter MappingJackson2HttpMessageConverter() {
        org.springframework.http.converter.json.MappingJackson2HttpMessageConverter converter = new org.springframework.http.converter.json.MappingJackson2HttpMessageConverter();
        converter.setObjectMapper(objectMapper());
        return converter;
    }

    /**
     * Customize the embedded Tomcat container to enable GZIP compression for the
     * mime-types defined in {@link #GZIP_COMPRESSION_MIME_TYPES}.
     *
     * @return EmbeddedServletContainerCustomizer instance
     */
    @Bean
    public EmbeddedServletContainerCustomizer servletContainerCustomizer() {
        return new EmbeddedServletContainerCustomizer() {
            @Override
            public void customize(ConfigurableEmbeddedServletContainer servletContainer) {
                ((TomcatEmbeddedServletContainerFactory) servletContainer)
                        .addConnectorCustomizers(new TomcatConnectorCustomizer() {
                            @Override
                            public void customize(Connector connector) {
                                @SuppressWarnings("rawtypes")
                                AbstractHttp11Protocol httpProtocol = (AbstractHttp11Protocol) connector
                                        .getProtocolHandler();
                                httpProtocol.setCompression("on");
                                httpProtocol.setCompressionMinSize(256);
                                String mimeTypes = httpProtocol.getCompressableMimeTypes();
                                String mimeTypesWithJson = mimeTypes + "," + GZIP_COMPRESSION_MIME_TYPES;
                                httpProtocol.setCompressableMimeTypes(mimeTypesWithJson);
                            }
                        });
            }
        };
    }
}