com.guicedee.guicedservlets.swagger.implementations.SwaggerServlet Maven / Gradle / Ivy

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Loads Swagger with Guice

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package com.guicedee.guicedservlets.swagger.implementations;

import com.google.inject.Singleton;
import com.guicedee.guicedservlets.rest.RESTContext;
import com.guicedee.guicedservlets.swagger.GuicedSwaggerConfig;
import com.guicedee.guicedservlets.swagger.services.IGuicedSwaggerConfiguration;
import com.guicedee.guicedinjection.GuiceContext;
import io.swagger.v3.jaxrs2.integration.JaxrsOpenApiContextBuilder;
import io.swagger.v3.jaxrs2.integration.OpenApiServlet;
import io.swagger.v3.oas.integration.OpenApiConfigurationException;
import io.swagger.v3.oas.integration.SwaggerConfiguration;
import io.swagger.v3.oas.models.OpenAPI;
import io.swagger.v3.oas.models.info.Info;

import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import java.util.ServiceLoader;
import java.util.Set;

@Singleton
public class SwaggerServlet
		extends OpenApiServlet
{
	@Override
	public void init(ServletConfig config) throws ServletException
	{
		OpenAPI oas = new OpenAPI();

		Set services = GuiceContext.instance()
		                                                        .getLoader(IGuicedSwaggerConfiguration.class, ServiceLoader.load(IGuicedSwaggerConfiguration.class));

		GuicedSwaggerConfig oasConfig = new GuicedSwaggerConfig<>();
		oasConfig.setConfiguration(new SwaggerConfiguration());

		Info info = new Info();
		for (IGuicedSwaggerConfiguration service : services)
		{
			oasConfig = service.config(oasConfig, info);
		}
		oas.info(info);
		try
		{
			new JaxrsOpenApiContextBuilder()
					.servletConfig(config)
					.openApiConfiguration(oasConfig.getConfiguration())
					.resourcePackages(RESTContext.getPathServices())
					.buildContext(true);
		}
		catch (OpenApiConfigurationException e)
		{
			throw new ServletException(e.getMessage(), e);
		}
	}
}