SwaggerServiceActivator.java

/**
 * Copyright 2015-2016 Red Hat, Inc, and individual contributors.
 *
 * 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 org.wildfly.swarm.swagger.deployment;

import java.io.IOException;
import java.io.InputStream;

import io.swagger.jaxrs.config.BeanConfig;
import org.jboss.msc.service.ServiceActivator;
import org.jboss.msc.service.ServiceActivatorContext;
import org.jboss.msc.service.ServiceRegistryException;
import org.wildfly.swarm.swagger.SwaggerArchive;
import org.wildfly.swarm.swagger.SwaggerConfig;
import org.wildfly.swarm.swagger.SwaggerMessages;

/**
 * @author Lance Ball
 */

public class SwaggerServiceActivator implements ServiceActivator {
    @Override
    public void activate(ServiceActivatorContext serviceActivatorContext) throws ServiceRegistryException {

        InputStream in = Thread.currentThread().getContextClassLoader().getResourceAsStream(SwaggerArchive.SWAGGER_CONFIGURATION_PATH);

        if (in == null) {
            // try again, we must go deeper.
            in = Thread.currentThread().getContextClassLoader().getResourceAsStream("WEB-INF/classes/" + SwaggerArchive.SWAGGER_CONFIGURATION_PATH);
        }

        if (in == null) {
            // No config available. Print a warning and return
            SwaggerMessages.MESSAGES.noConfigurationFound();
            return;
        }

        try {
            SwaggerConfig config = new SwaggerConfig(in);

            BeanConfig beanConfig = new BeanConfig();
            beanConfig.setHost((String) config.get(SwaggerConfig.Key.HOST));
            beanConfig.setLicense((String) config.get(SwaggerConfig.Key.LICENSE));
            beanConfig.setLicenseUrl((String) config.get(SwaggerConfig.Key.LICENSE_URL));
            beanConfig.setTermsOfServiceUrl((String) config.get(SwaggerConfig.Key.TERMS_OF_SERVICE_URL));

            // some type inconsistencies in the API (String vs String[])
            String[] packages = (String[]) config.get(SwaggerConfig.Key.PACKAGES);

            if (packages != null) {
                StringBuffer sb = new StringBuffer();
                for (String s : packages) {
                    sb.append(s).append(',');
                }

                beanConfig.setResourcePackage(sb.toString());
            }

            beanConfig.setVersion((String) config.get(SwaggerConfig.Key.VERSION));
            beanConfig.setBasePath((String) config.get(SwaggerConfig.Key.ROOT));
            beanConfig.setContact((String) config.get(SwaggerConfig.Key.CONTACT));
            beanConfig.setDescription((String) config.get(SwaggerConfig.Key.DESCRIPTION));
            beanConfig.setTitle((String) config.get(SwaggerConfig.Key.TITLE));
            beanConfig.setPrettyPrint((String) config.get(SwaggerConfig.Key.PRETTY_PRINT));
            beanConfig.setSchemes((String[]) config.get(SwaggerConfig.Key.SCHEMES));

            beanConfig.setScan(true);
        } catch (IOException e) {
            throw new ServiceRegistryException(e);
        }

    }
}