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SwaggerDefinitionService.java
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/
SwaggerDefinitionService.java
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/*
* Copyright (c) 2016, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
*
* WSO2 Inc. 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.wso2.msf4j.swagger;
import io.swagger.util.Json;
import org.wso2.msf4j.MicroservicesRegistry;
import org.wso2.msf4j.SwaggerService;
import org.wso2.msf4j.util.RuntimeAnnotations;
import java.util.HashMap;
import java.util.Map;
import java.util.Optional;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.QueryParam;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
/**
* This service returns the Swagger definition of all the APIs of the microservices deployed in this runtime.
*/
@Path("/swagger")
public class SwaggerDefinitionService implements SwaggerService {
private static final String GLOBAL = "global";
private Map<String, MSF4JBeanConfig> swaggerBeans = new HashMap<>();
private MicroservicesRegistry serviceRegistry;
public SwaggerDefinitionService() {
}
public SwaggerDefinitionService(MicroservicesRegistry serviceRegistry) {
this.serviceRegistry = serviceRegistry;
}
public void init(MicroservicesRegistry serviceRegistry) {
this.serviceRegistry = serviceRegistry;
}
@GET
@Produces({MediaType.APPLICATION_JSON})
public Response getSwaggerDefinition(@QueryParam("path") String path) throws Exception {
MSF4JBeanConfig msf4JBeanConfig;
if (path == null) {
msf4JBeanConfig = swaggerBeans.get(GLOBAL);
if (msf4JBeanConfig == null) {
MSF4JBeanConfig beanConfig = new MSF4JBeanConfig();
serviceRegistry.getHttpServices().stream().
filter(service -> !service.getClass().equals(SwaggerDefinitionService.class)).
forEach(service -> beanConfig.addServiceClass(service.getClass()));
beanConfig.setScan(true);
msf4JBeanConfig = beanConfig;
swaggerBeans.put(GLOBAL, msf4JBeanConfig);
}
} else {
msf4JBeanConfig = swaggerBeans.get(path);
if (msf4JBeanConfig == null) {
Optional<Map.Entry<String, Object>> service = serviceRegistry.getServiceWithBasePath(path);
if (service.isPresent()) {
MSF4JBeanConfig beanConfig = new MSF4JBeanConfig();
Map<String, Object> valuesMap = new HashMap<>();
valuesMap.put("value", path);
RuntimeAnnotations.putAnnotation(service.get().getValue().getClass(), Path.class, valuesMap);
beanConfig.addServiceClass(service.get().getValue().getClass());
beanConfig.setBasePath(service.get().getKey());
beanConfig.setScan(true);
msf4JBeanConfig = beanConfig;
swaggerBeans.put(path, msf4JBeanConfig);
}
}
}
return (msf4JBeanConfig == null) ?
Response.status(Response.Status.NOT_FOUND).
entity("{\"error\": \"Swagger definition not found for path " + path + "\"}").build() :
Response.status(Response.Status.OK).
entity(Json.mapper().
writerWithDefaultPrettyPrinter().writeValueAsString(msf4JBeanConfig.getSwagger())).
build();
}
}