io.swagger.jaxrs.Reader Maven / Gradle / Ivy
/**
* Copyright 2016 SmartBear Software
*
* 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 io.swagger.jaxrs;
import com.fasterxml.jackson.databind.BeanDescription;
import com.fasterxml.jackson.databind.JavaType;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.introspect.AnnotatedMethod;
import com.fasterxml.jackson.databind.introspect.AnnotatedParameter;
import com.fasterxml.jackson.databind.type.TypeFactory;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiImplicitParam;
import io.swagger.annotations.ApiImplicitParams;
import io.swagger.annotations.ApiKeyAuthDefinition;
import io.swagger.annotations.ApiOperation;
import io.swagger.annotations.ApiResponse;
import io.swagger.annotations.ApiResponses;
import io.swagger.annotations.Authorization;
import io.swagger.annotations.AuthorizationScope;
import io.swagger.annotations.BasicAuthDefinition;
import io.swagger.annotations.Info;
import io.swagger.annotations.OAuth2Definition;
import io.swagger.annotations.ResponseHeader;
import io.swagger.annotations.Scope;
import io.swagger.annotations.SwaggerDefinition;
import io.swagger.converter.ModelConverters;
import io.swagger.jaxrs.config.DefaultReaderConfig;
import io.swagger.jaxrs.config.ReaderConfig;
import io.swagger.jaxrs.config.ReaderListener;
import io.swagger.jaxrs.ext.SwaggerExtension;
import io.swagger.jaxrs.ext.SwaggerExtensions;
import io.swagger.jaxrs.utils.ReaderUtils;
import io.swagger.models.Contact;
import io.swagger.models.ExternalDocs;
import io.swagger.models.License;
import io.swagger.models.Model;
import io.swagger.models.Operation;
import io.swagger.models.Path;
import io.swagger.models.Response;
import io.swagger.models.Scheme;
import io.swagger.models.SecurityRequirement;
import io.swagger.models.Swagger;
import io.swagger.models.Tag;
import io.swagger.models.auth.In;
import io.swagger.models.parameters.FormParameter;
import io.swagger.models.parameters.HeaderParameter;
import io.swagger.models.parameters.Parameter;
import io.swagger.models.parameters.PathParameter;
import io.swagger.models.parameters.QueryParameter;
import io.swagger.models.properties.ArrayProperty;
import io.swagger.models.properties.MapProperty;
import io.swagger.models.properties.Property;
import io.swagger.models.properties.RefProperty;
import io.swagger.util.BaseReaderUtils;
import io.swagger.util.ParameterProcessor;
import io.swagger.util.PathUtils;
import io.swagger.util.ReflectionUtils;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.ws.rs.Consumes;
import javax.ws.rs.HttpMethod;
import javax.ws.rs.Produces;
import java.lang.annotation.Annotation;
import java.lang.reflect.Method;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Comparator;
import java.util.EnumSet;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.TreeSet;
public class Reader {
private static final Logger LOGGER = LoggerFactory.getLogger(Reader.class);
private static final String SUCCESSFUL_OPERATION = "successful operation";
private static final String PATH_DELIMITER = "/";
private final ReaderConfig config;
private Swagger swagger;
public Reader(Swagger swagger) {
this(swagger, null);
}
public Reader(Swagger swagger, ReaderConfig config) {
this.swagger = (swagger == null) ? new Swagger() : swagger;
this.config = new DefaultReaderConfig(config);
}
public Swagger getSwagger() {
return swagger;
}
/**
* Scans a set of classes for both ReaderListeners and Swagger annotations. All found listeners will
* be instantiated before any of the classes are scanned for Swagger annotations - so they can be invoked
* accordingly.
*
* @param classes a set of classes to scan
* @return the generated Swagger definition
*/
public Swagger read(Set> classes) {
Set> sortedClasses = new TreeSet>(new Comparator>() {
@Override
public int compare(Class class1, Class class2) {
if (class1.equals(class2)) {
return 0;
} else if (class1.isAssignableFrom(class2)) {
return -1;
} else if (class2.isAssignableFrom(class1)) {
return 1;
}
return class1.getName().compareTo(class2.getName());
}
});
sortedClasses.addAll(classes);
Map, ReaderListener> listeners = new HashMap, ReaderListener>();
for (Class cls : sortedClasses) {
if (ReaderListener.class.isAssignableFrom(cls) && !listeners.containsKey(cls)) {
try {
listeners.put(cls, (ReaderListener) cls.newInstance());
} catch (Exception e) {
LOGGER.error("Failed to create ReaderListener", e);
}
}
}
for (ReaderListener listener : listeners.values()) {
try {
listener.beforeScan(this, swagger);
} catch (Exception e) {
LOGGER.error("Unexpected error invoking beforeScan listener [" + listener.getClass().getName() + "]", e);
}
}
// process SwaggerDefinitions first - so we get tags in desired order
for (Class cls : sortedClasses) {
SwaggerDefinition swaggerDefinition = cls.getAnnotation(SwaggerDefinition.class);
if (swaggerDefinition != null) {
readSwaggerConfig(cls, swaggerDefinition);
}
}
for (Class cls : sortedClasses) {
read(cls, "", null, false, new String[0], new String[0], new LinkedHashMap(), new ArrayList(), new HashSet>());
}
for (ReaderListener listener : listeners.values()) {
try {
listener.afterScan(this, swagger);
} catch (Exception e) {
LOGGER.error("Unexpected error invoking afterScan listener [" + listener.getClass().getName() + "]", e);
}
}
return swagger;
}
/**
* Scans a single class for Swagger annotations - does not invoke ReaderListeners
*/
public Swagger read(Class cls) {
SwaggerDefinition swaggerDefinition = cls.getAnnotation(SwaggerDefinition.class);
if (swaggerDefinition != null) {
readSwaggerConfig(cls, swaggerDefinition);
}
return read(cls, "", null, false, new String[0], new String[0], new LinkedHashMap(), new ArrayList(), new HashSet>());
}
protected Swagger read(Class cls, String parentPath, String parentMethod, boolean isSubresource, String[] parentConsumes, String[] parentProduces, Map parentTags, List parentParameters) {
return read(cls, parentPath, parentMethod, isSubresource, parentConsumes, parentProduces, parentTags, parentParameters, new HashSet>());
}
private Swagger read(Class cls, String parentPath, String parentMethod, boolean isSubresource, String[] parentConsumes, String[] parentProduces, Map parentTags, List parentParameters, Set> scannedResources) {
Map tags = new LinkedHashMap();
List securities = new ArrayList();
String[] consumes = new String[0];
String[] produces = new String[0];
final Set globalSchemes = EnumSet.noneOf(Scheme.class);
Api api = ReflectionUtils.getAnnotation(cls, Api.class);
boolean hasPathAnnotation = (ReflectionUtils.getAnnotation(cls, javax.ws.rs.Path.class) != null);
boolean hasApiAnnotation = (api != null);
boolean isApiHidden = hasApiAnnotation && api.hidden();
// class readable only if annotated with ((@Path and @Api) or isSubresource ) - and @Api not hidden
boolean classReadable = ((hasPathAnnotation && hasApiAnnotation) || isSubresource) && !isApiHidden;
// with scanAllResources true in config and @Api not hidden scan only if it has also @Path annotation or is subresource
boolean scanAll = !isApiHidden && config.isScanAllResources() && (hasPathAnnotation || isSubresource);
// readable if classReadable or scanAll
boolean readable = classReadable || scanAll;
if (!readable) {
return swagger;
}
// api readable only if @Api present; cannot be hidden because checked in classReadable.
boolean apiReadable = hasApiAnnotation;
if (apiReadable) {
// the value will be used as a tag for 2.0 UNLESS a Tags annotation is present
Set tagStrings = extractTags(api);
for (String tagString : tagStrings) {
Tag tag = new Tag().name(tagString);
tags.put(tagString, tag);
}
for (String tagName : tags.keySet()) {
swagger.tag(tags.get(tagName));
}
if (!api.produces().isEmpty()) {
produces = ReaderUtils.splitContentValues(new String[]{api.produces()});
}
if (!api.consumes().isEmpty()) {
consumes = ReaderUtils.splitContentValues(new String[]{api.consumes()});
}
globalSchemes.addAll(parseSchemes(api.protocols()));
for (Authorization auth : api.authorizations()) {
if (auth.value() != null && !auth.value().isEmpty()) {
SecurityRequirement security = new SecurityRequirement();
security.setName(auth.value());
for (AuthorizationScope scope : auth.scopes()) {
if (scope.scope() != null && !scope.scope().isEmpty()) {
security.addScope(scope.scope());
}
}
securities.add(security);
}
}
}
if (readable) {
if (isSubresource) {
if (parentTags != null) {
tags.putAll(parentTags);
}
}
// merge consumes, produces
if (consumes.length == 0 && cls.getAnnotation(Consumes.class) != null) {
consumes = ReaderUtils.splitContentValues(cls.getAnnotation(Consumes.class).value());
}
if (produces.length == 0 && cls.getAnnotation(Produces.class) != null) {
produces = ReaderUtils.splitContentValues(cls.getAnnotation(Produces.class).value());
}
// look for method-level annotated properties
// handle sub-resources by looking at return type
final List globalParameters = new ArrayList();
// look for constructor-level annotated properties
globalParameters.addAll(ReaderUtils.collectConstructorParameters(cls, swagger));
// look for field-level annotated properties
globalParameters.addAll(ReaderUtils.collectFieldParameters(cls, swagger));
// build class/interface level @ApiResponse list
ApiResponses classResponseAnnotation = ReflectionUtils.getAnnotation(cls, ApiResponses.class);
List classApiResponses = new ArrayList();
if (classResponseAnnotation != null) {
classApiResponses.addAll(Arrays.asList(classResponseAnnotation.value()));
}
// parse the method
final javax.ws.rs.Path apiPath = ReflectionUtils.getAnnotation(cls, javax.ws.rs.Path.class);
JavaType classType = TypeFactory.defaultInstance().constructType(cls);
BeanDescription bd = new ObjectMapper().getSerializationConfig().introspect(classType);
Method methods[] = cls.getMethods();
for (Method method : methods) {
AnnotatedMethod annotatedMethod = bd.findMethod(method.getName(), method.getParameterTypes());
if (ReflectionUtils.isOverriddenMethod(method, cls)) {
continue;
}
javax.ws.rs.Path methodPath = ReflectionUtils.getAnnotation(method, javax.ws.rs.Path.class);
String operationPath = getPath(apiPath, methodPath, parentPath);
Map regexMap = new LinkedHashMap();
operationPath = PathUtils.parsePath(operationPath, regexMap);
if (operationPath != null) {
if (isIgnored(operationPath)) {
continue;
}
final ApiOperation apiOperation = ReflectionUtils.getAnnotation(method, ApiOperation.class);
String httpMethod = extractOperationMethod(apiOperation, method, SwaggerExtensions.chain());
Operation operation = null;
if (apiOperation != null || config.isScanAllResources() || httpMethod != null || methodPath != null) {
operation = parseMethod(cls, method, annotatedMethod, globalParameters, classApiResponses);
}
if (operation == null) {
continue;
}
if (parentParameters != null) {
for (Parameter param : parentParameters) {
operation.parameter(param);
}
}
for (Parameter param : operation.getParameters()) {
if (regexMap.get(param.getName()) != null) {
String pattern = regexMap.get(param.getName());
param.setPattern(pattern);
}
}
if (apiOperation != null) {
for (Scheme scheme : parseSchemes(apiOperation.protocols())) {
operation.scheme(scheme);
}
}
if (operation.getSchemes() == null || operation.getSchemes().isEmpty()) {
for (Scheme scheme : globalSchemes) {
operation.scheme(scheme);
}
}
String[] apiConsumes = consumes;
if (parentConsumes != null) {
Set both = new LinkedHashSet(Arrays.asList(apiConsumes));
both.addAll(new LinkedHashSet(Arrays.asList(parentConsumes)));
if (operation.getConsumes() != null) {
both.addAll(new LinkedHashSet(operation.getConsumes()));
}
apiConsumes = both.toArray(new String[both.size()]);
}
String[] apiProduces = produces;
if (parentProduces != null) {
Set both = new LinkedHashSet(Arrays.asList(apiProduces));
both.addAll(new LinkedHashSet(Arrays.asList(parentProduces)));
if (operation.getProduces() != null) {
both.addAll(new LinkedHashSet(operation.getProduces()));
}
apiProduces = both.toArray(new String[both.size()]);
}
final Class subResource = getSubResourceWithJaxRsSubresourceLocatorSpecs(method);
if (subResource != null && !scannedResources.contains(subResource)) {
scannedResources.add(subResource);
read(subResource, operationPath, httpMethod, true, apiConsumes, apiProduces, tags, operation.getParameters(), scannedResources);
// remove the sub resource so that it can visit it later in another path
// but we have a room for optimization in the future to reuse the scanned result
// by caching the scanned resources in the reader instance to avoid actual scanning
// the the resources again
scannedResources.remove(subResource);
}
// can't continue without a valid http method
httpMethod = (httpMethod == null) ? parentMethod : httpMethod;
if (httpMethod != null) {
if (apiOperation != null) {
for (String tag : apiOperation.tags()) {
if (!"".equals(tag)) {
operation.tag(tag);
swagger.tag(new Tag().name(tag));
}
}
operation.getVendorExtensions().putAll(BaseReaderUtils.parseExtensions(apiOperation.extensions()));
}
if (operation.getConsumes() == null) {
for (String mediaType : apiConsumes) {
operation.consumes(mediaType);
}
}
if (operation.getProduces() == null) {
for (String mediaType : apiProduces) {
operation.produces(mediaType);
}
}
if (operation.getTags() == null) {
for (String tagString : tags.keySet()) {
operation.tag(tagString);
}
}
// Only add global @Api securities if operation doesn't already have more specific securities
if (operation.getSecurity() == null) {
for (SecurityRequirement security : securities) {
operation.security(security);
}
}
Path path = swagger.getPath(operationPath);
if (path == null) {
path = new Path();
swagger.path(operationPath, path);
}
path.set(httpMethod, operation);
readImplicitParameters(method, operation);
readExternalDocs(method, operation);
}
}
}
}
return swagger;
}
private void readImplicitParameters(Method method, Operation operation) {
processImplicitParams(ReflectionUtils.getAnnotation(method, ApiImplicitParams.class), operation);
processImplicitParams(ReflectionUtils.getAnnotation(method.getDeclaringClass(), ApiImplicitParams.class), operation);
}
private void processImplicitParams(ApiImplicitParams implicitParams, Operation operation) {
if (implicitParams != null) {
for (ApiImplicitParam param : implicitParams.value()) {
Parameter p = readImplicitParam(param);
if (p != null) {
operation.addParameter(p);
}
}
}
}
private void readExternalDocs(Method method, Operation operation) {
io.swagger.annotations.ExternalDocs externalDocs = ReflectionUtils.getAnnotation(method, io.swagger.annotations.ExternalDocs.class);
if(externalDocs != null) {
operation.setExternalDocs(new ExternalDocs(externalDocs.value(), externalDocs.url()));
}
}
protected Parameter readImplicitParam(ApiImplicitParam param) {
final Parameter p;
if (param.paramType().equalsIgnoreCase("path")) {
p = new PathParameter();
} else if (param.paramType().equalsIgnoreCase("query")) {
p = new QueryParameter();
} else if (param.paramType().equalsIgnoreCase("form") || param.paramType().equalsIgnoreCase("formData")) {
p = new FormParameter();
} else if (param.paramType().equalsIgnoreCase("body")) {
p = null;
} else if (param.paramType().equalsIgnoreCase("header")) {
p = new HeaderParameter();
} else {
LOGGER.warn("Unknown implicit parameter type: [{}]", param.paramType());
return null;
}
final Type type = param.dataTypeClass() == Void.class ? ReflectionUtils.typeFromString(param.dataType())
: param.dataTypeClass();
return ParameterProcessor.applyAnnotations(swagger, p, (type == null) ? String.class : type,
Arrays.asList(param));
}
protected void readSwaggerConfig(Class cls, SwaggerDefinition config) {
if (!config.basePath().isEmpty()) {
swagger.setBasePath(config.basePath());
}
if (!config.host().isEmpty()) {
swagger.setHost(config.host());
}
readInfoConfig(config);
for (String consume : config.consumes()) {
if (StringUtils.isNotEmpty(consume)) {
swagger.addConsumes(consume);
}
}
for (String produce : config.produces()) {
if (StringUtils.isNotEmpty(produce)) {
swagger.addProduces(produce);
}
}
for (OAuth2Definition oAuth2Config : config.securityDefinition().oAuth2Definitions()) {
io.swagger.models.auth.OAuth2Definition oAuth2Definition = new io.swagger.models.auth.OAuth2Definition();
OAuth2Definition.Flow flow = oAuth2Config.flow();
if (flow.equals(OAuth2Definition.Flow.ACCESS_CODE)) {
oAuth2Definition = oAuth2Definition.accessCode(oAuth2Config.authorizationUrl(), oAuth2Config.tokenUrl());
} else if (flow.equals(OAuth2Definition.Flow.APPLICATION)) {
oAuth2Definition = oAuth2Definition.application(oAuth2Config.tokenUrl());
} else if (flow.equals(OAuth2Definition.Flow.IMPLICIT)) {
oAuth2Definition = oAuth2Definition.implicit(oAuth2Config.authorizationUrl());
} else {
oAuth2Definition = oAuth2Definition.password(oAuth2Config.tokenUrl());
}
for (Scope scope : oAuth2Config.scopes()) {
oAuth2Definition.addScope(scope.name(), scope.description());
}
oAuth2Definition.setDescription(oAuth2Config.description());
swagger.addSecurityDefinition(oAuth2Config.key(), oAuth2Definition);
}
for (ApiKeyAuthDefinition[] apiKeyAuthConfigs : new ApiKeyAuthDefinition[][] {
config.securityDefinition().apiKeyAuthDefintions(), config.securityDefinition().apiKeyAuthDefinitions() }) {
for (ApiKeyAuthDefinition apiKeyAuthConfig : apiKeyAuthConfigs) {
io.swagger.models.auth.ApiKeyAuthDefinition apiKeyAuthDefinition = new io.swagger.models.auth.ApiKeyAuthDefinition();
apiKeyAuthDefinition.setName(apiKeyAuthConfig.name());
apiKeyAuthDefinition.setIn(In.forValue(apiKeyAuthConfig.in().toValue()));
apiKeyAuthDefinition.setDescription(apiKeyAuthConfig.description());
swagger.addSecurityDefinition(apiKeyAuthConfig.key(), apiKeyAuthDefinition);
}
}
for (BasicAuthDefinition[] basicAuthConfigs : new BasicAuthDefinition[][] {
config.securityDefinition().basicAuthDefinions(), config.securityDefinition().basicAuthDefinitions() }) {
for (BasicAuthDefinition basicAuthConfig : basicAuthConfigs) {
io.swagger.models.auth.BasicAuthDefinition basicAuthDefinition = new io.swagger.models.auth.BasicAuthDefinition();
basicAuthDefinition.setDescription(basicAuthConfig.description());
swagger.addSecurityDefinition(basicAuthConfig.key(), basicAuthDefinition);
}
}
if (!config.externalDocs().value().isEmpty()) {
ExternalDocs externalDocs = swagger.getExternalDocs();
if (externalDocs == null) {
externalDocs = new ExternalDocs();
swagger.setExternalDocs(externalDocs);
}
externalDocs.setDescription(config.externalDocs().value());
if (!config.externalDocs().url().isEmpty()) {
externalDocs.setUrl(config.externalDocs().url());
}
}
for (io.swagger.annotations.Tag tagConfig : config.tags()) {
if (!tagConfig.name().isEmpty()) {
Tag tag = new Tag();
tag.setName(tagConfig.name());
tag.setDescription(tagConfig.description());
if (!tagConfig.externalDocs().value().isEmpty()) {
tag.setExternalDocs(new ExternalDocs(tagConfig.externalDocs().value(),
tagConfig.externalDocs().url()));
}
tag.getVendorExtensions().putAll(BaseReaderUtils.parseExtensions(tagConfig.extensions()));
swagger.addTag(tag);
}
}
for (SwaggerDefinition.Scheme scheme : config.schemes()) {
if (scheme != SwaggerDefinition.Scheme.DEFAULT) {
swagger.addScheme(Scheme.forValue(scheme.name()));
}
}
}
protected void readInfoConfig(SwaggerDefinition config) {
Info infoConfig = config.info();
io.swagger.models.Info info = swagger.getInfo();
if (info == null) {
info = new io.swagger.models.Info();
swagger.setInfo(info);
}
if (!infoConfig.description().isEmpty()) {
info.setDescription(infoConfig.description());
}
if (!infoConfig.termsOfService().isEmpty()) {
info.setTermsOfService(infoConfig.termsOfService());
}
if (!infoConfig.title().isEmpty()) {
info.setTitle(infoConfig.title());
}
if (!infoConfig.version().isEmpty()) {
info.setVersion(infoConfig.version());
}
if (!infoConfig.contact().name().isEmpty()) {
Contact contact = info.getContact();
if (contact == null) {
contact = new Contact();
info.setContact(contact);
}
contact.setName(infoConfig.contact().name());
if (!infoConfig.contact().email().isEmpty()) {
contact.setEmail(infoConfig.contact().email());
}
if (!infoConfig.contact().url().isEmpty()) {
contact.setUrl(infoConfig.contact().url());
}
}
if (!infoConfig.license().name().isEmpty()) {
License license = info.getLicense();
if (license == null) {
license = new License();
info.setLicense(license);
}
license.setName(infoConfig.license().name());
if (!infoConfig.license().url().isEmpty()) {
license.setUrl(infoConfig.license().url());
}
}
info.getVendorExtensions().putAll(BaseReaderUtils.parseExtensions(infoConfig.extensions()));
}
protected Class getSubResource(Method method) {
final Class rawType = method.getReturnType();
final Class type;
if (Class.class.equals(rawType)) {
type = getClassArgument(method.getGenericReturnType());
if (type == null) {
return null;
}
} else {
type = rawType;
}
if (type.getAnnotation(Api.class) != null) {
return type;
}
// For sub-resources that are not annotated with @Api, look for any HttpMethods.
for (Method m : type.getMethods()) {
if (extractOperationMethod(null, m, null) != null) {
return type;
}
}
return null;
}
protected Class getSubResourceWithJaxRsSubresourceLocatorSpecs(Method method) {
final Class rawType = method.getReturnType();
final Class type;
if (Class.class.equals(rawType)) {
type = getClassArgument(method.getGenericReturnType());
if (type == null) {
return null;
}
} else {
type = rawType;
}
if (method.getAnnotation(javax.ws.rs.Path.class) != null) {
if (extractOperationMethod(null, method, null) == null) {
return type;
}
}
return null;
}
private static Class getClassArgument(Type cls) {
if (cls instanceof ParameterizedType) {
final ParameterizedType parameterized = (ParameterizedType) cls;
final Type[] args = parameterized.getActualTypeArguments();
if (args.length != 1) {
LOGGER.error("Unexpected class definition: {}", cls);
return null;
}
final Type first = args[0];
if (first instanceof Class) {
return (Class) first;
} else {
return null;
}
} else {
LOGGER.error("Unknown class definition: {}", cls);
return null;
}
}
protected Set extractTags(Api api) {
Set output = new LinkedHashSet();
boolean hasExplicitTags = false;
for (String tag : api.tags()) {
if (!"".equals(tag)) {
hasExplicitTags = true;
output.add(tag);
}
}
if (!hasExplicitTags) {
// derive tag from api path + description
String tagString = api.value().replace("/", "");
if (!"".equals(tagString)) {
output.add(tagString);
}
}
return output;
}
String getPath(javax.ws.rs.Path classLevelPath, javax.ws.rs.Path methodLevelPath, String parentPath) {
if (classLevelPath == null && methodLevelPath == null && StringUtils.isEmpty(parentPath)) {
return null;
}
StringBuilder b = new StringBuilder();
if (parentPath != null && !"".equals(parentPath) && !"/".equals(parentPath)) {
if (!parentPath.startsWith("/")) {
parentPath = "/" + parentPath;
}
if (parentPath.endsWith("/")) {
parentPath = parentPath.substring(0, parentPath.length() - 1);
}
b.append(parentPath);
}
if (classLevelPath != null) {
b.append(classLevelPath.value());
}
if (methodLevelPath != null && !"/".equals(methodLevelPath.value())) {
String methodPath = methodLevelPath.value();
if (!methodPath.startsWith("/") && !b.toString().endsWith("/")) {
b.append("/");
}
if (methodPath.endsWith("/")) {
methodPath = methodPath.substring(0, methodPath.length() - 1);
}
b.append(methodPath);
}
String output = b.toString();
if (!output.startsWith("/")) {
output = "/" + output;
}
if (output.endsWith("/") && output.length() > 1) {
return output.substring(0, output.length() - 1);
} else {
return output;
}
}
private Map parseResponseHeaders(ResponseHeader[] headers) {
Map responseHeaders = null;
if (headers != null) {
for (ResponseHeader header : headers) {
String name = header.name();
if (!"".equals(name)) {
if (responseHeaders == null) {
responseHeaders = new LinkedHashMap();
}
String description = header.description();
Class cls = header.response();
if (!isVoid(cls)) {
final Property property = ModelConverters.getInstance().readAsProperty(cls);
if (property != null) {
Property responseProperty = ContainerWrapper.wrapContainer(header.responseContainer(), property,
ContainerWrapper.ARRAY, ContainerWrapper.LIST, ContainerWrapper.SET);
responseProperty.setDescription(description);
responseHeaders.put(name, responseProperty);
appendModels(cls);
}
}
}
}
}
return responseHeaders;
}
public Operation parseMethod(Method method) {
JavaType classType = TypeFactory.defaultInstance().constructType(method.getDeclaringClass());
BeanDescription bd = new ObjectMapper().getSerializationConfig().introspect(classType);
return parseMethod(classType.getClass(), method, bd.findMethod(method.getName(), method.getParameterTypes()),
Collections. emptyList(), Collections. emptyList());
}
private Operation parseMethod(Class cls, Method method, AnnotatedMethod annotatedMethod,
List globalParameters, List classApiResponses) {
Operation operation = new Operation();
if (annotatedMethod != null) {
method = annotatedMethod.getAnnotated();
}
ApiOperation apiOperation = ReflectionUtils.getAnnotation(method, ApiOperation.class);
ApiResponses responseAnnotation = ReflectionUtils.getAnnotation(method, ApiResponses.class);
String operationId = null;
// check if it's an inherited or implemented method.
boolean methodInSuperType = false;
if (!cls.isInterface()) {
methodInSuperType = ReflectionUtils.findMethod(method, cls.getSuperclass()) != null;
}
if (!methodInSuperType) {
for (Class implementedInterface : cls.getInterfaces()) {
methodInSuperType = ReflectionUtils.findMethod(method, implementedInterface) != null;
if (methodInSuperType) {
break;
}
}
}
if (!methodInSuperType) {
operationId = method.getName();
} else {
operationId = this.getOperationId(method.getName());
}
String responseContainer = null;
Type responseType = null;
Map defaultResponseHeaders = new LinkedHashMap();
if (apiOperation != null) {
if (apiOperation.hidden()) {
return null;
}
if (!apiOperation.nickname().isEmpty()) {
operationId = apiOperation.nickname();
}
defaultResponseHeaders = parseResponseHeaders(apiOperation.responseHeaders());
operation.summary(apiOperation.value()).description(apiOperation.notes());
if (!isVoid(apiOperation.response())) {
responseType = apiOperation.response();
}
if (!apiOperation.responseContainer().isEmpty()) {
responseContainer = apiOperation.responseContainer();
}
List securities = new ArrayList();
for (Authorization auth : apiOperation.authorizations()) {
if (!auth.value().isEmpty()) {
SecurityRequirement security = new SecurityRequirement();
security.setName(auth.value());
for (AuthorizationScope scope : auth.scopes()) {
if (!scope.scope().isEmpty()) {
security.addScope(scope.scope());
}
}
securities.add(security);
}
}
for (SecurityRequirement sec : securities) {
operation.security(sec);
}
if (!apiOperation.consumes().isEmpty()) {
String[] consumesAr = ReaderUtils.splitContentValues(new String[]{apiOperation.consumes()});
for (String consume : consumesAr) {
operation.consumes(consume);
}
}
if (!apiOperation.produces().isEmpty()) {
String[] producesAr = ReaderUtils.splitContentValues(new String[]{apiOperation.produces()});
for (String produce : producesAr) {
operation.produces(produce);
}
}
}
if (apiOperation != null && StringUtils.isNotEmpty(apiOperation.responseReference())) {
Response response = new Response().description(SUCCESSFUL_OPERATION);
response.schema(new RefProperty(apiOperation.responseReference()));
operation.addResponse(String.valueOf(apiOperation.code()), response);
} else if (responseType == null) {
// pick out response from method declaration
LOGGER.debug("picking up response class from method {}", method);
responseType = method.getGenericReturnType();
}
if (isValidResponse(responseType)) {
final Property property = ModelConverters.getInstance().readAsProperty(responseType);
if (property != null) {
final Property responseProperty = ContainerWrapper.wrapContainer(responseContainer, property);
final int responseCode = (apiOperation == null) ? 200 : apiOperation.code();
operation.response(responseCode, new Response().description(SUCCESSFUL_OPERATION).schema(responseProperty)
.headers(defaultResponseHeaders));
appendModels(responseType);
}
}
operation.operationId(operationId);
if (operation.getConsumes() == null || operation.getConsumes().isEmpty()) {
final Consumes consumes = ReflectionUtils.getAnnotation(method, Consumes.class);
if (consumes != null) {
for (String mediaType : ReaderUtils.splitContentValues(consumes.value())) {
operation.consumes(mediaType);
}
}
}
if (operation.getProduces() == null || operation.getProduces().isEmpty()) {
final Produces produces = ReflectionUtils.getAnnotation(method, Produces.class);
if (produces != null) {
for (String mediaType : ReaderUtils.splitContentValues(produces.value())) {
operation.produces(mediaType);
}
}
}
List apiResponses = new ArrayList();
if (responseAnnotation != null) {
apiResponses.addAll(Arrays.asList(responseAnnotation.value()));
}
Class[] exceptionTypes = method.getExceptionTypes();
for (Class exceptionType : exceptionTypes) {
ApiResponses exceptionResponses = ReflectionUtils.getAnnotation(exceptionType, ApiResponses.class);
if (exceptionResponses != null) {
apiResponses.addAll(Arrays.asList(exceptionResponses.value()));
}
}
for (ApiResponse apiResponse : apiResponses) {
addResponse(operation, apiResponse);
}
// merge class level @ApiResponse
for (ApiResponse apiResponse : classApiResponses) {
String key = (apiResponse.code() == 0) ? "default" : String.valueOf(apiResponse.code());
if (operation.getResponses() != null && operation.getResponses().containsKey(key)) {
continue;
}
addResponse(operation, apiResponse);
}
if (ReflectionUtils.getAnnotation(method, Deprecated.class) != null) {
operation.setDeprecated(true);
}
// process parameters
for (Parameter globalParameter : globalParameters) {
operation.parameter(globalParameter);
}
Annotation[][] paramAnnotations = ReflectionUtils.getParameterAnnotations(method);
if (annotatedMethod == null) {
Type[] genericParameterTypes = method.getGenericParameterTypes();
for (int i = 0; i < genericParameterTypes.length; i++) {
final Type type = TypeFactory.defaultInstance().constructType(genericParameterTypes[i], cls);
List parameters = getParameters(type, Arrays.asList(paramAnnotations[i]));
for (Parameter parameter : parameters) {
operation.parameter(parameter);
}
}
} else {
for (int i = 0; i < annotatedMethod.getParameterCount(); i++) {
AnnotatedParameter param = annotatedMethod.getParameter(i);
final Type type = TypeFactory.defaultInstance().constructType(param.getParameterType(), cls);
List parameters = getParameters(type, Arrays.asList(paramAnnotations[i]));
for (Parameter parameter : parameters) {
operation.parameter(parameter);
}
}
}
if (operation.getResponses() == null) {
Response response = new Response().description(SUCCESSFUL_OPERATION);
operation.defaultResponse(response);
}
processOperationDecorator(operation, method);
return operation;
}
private void processOperationDecorator(Operation operation, Method method) {
final Iterator chain = SwaggerExtensions.chain();
if (chain.hasNext()) {
SwaggerExtension extension = chain.next();
LOGGER.debug("trying to decorate operation: {}", extension);
extension.decorateOperation(operation, method, chain);
}
}
private void addResponse(Operation operation, ApiResponse apiResponse) {
Map responseHeaders = parseResponseHeaders(apiResponse.responseHeaders());
Response response = new Response()
.description(apiResponse.message()).headers(responseHeaders);
if (apiResponse.code() == 0) {
operation.defaultResponse(response);
} else {
operation.response(apiResponse.code(), response);
}
if (StringUtils.isNotEmpty(apiResponse.reference())) {
response.schema(new RefProperty(apiResponse.reference()));
} else if (!isVoid(apiResponse.response())) {
Type responseType = apiResponse.response();
final Property property = ModelConverters.getInstance().readAsProperty(responseType);
if (property != null) {
response.schema(ContainerWrapper.wrapContainer(apiResponse.responseContainer(), property));
appendModels(responseType);
}
}
}
private List getParameters(Type type, List annotations) {
final Iterator chain = SwaggerExtensions.chain();
if (!chain.hasNext()) {
return Collections.emptyList();
}
LOGGER.debug("getParameters for {}", type);
Set typesToSkip = new HashSet();
final SwaggerExtension extension = chain.next();
LOGGER.debug("trying extension {}", extension);
final List parameters = extension.extractParameters(annotations, type, typesToSkip, chain);
if (!parameters.isEmpty()) {
final List processed = new ArrayList(parameters.size());
for (Parameter parameter : parameters) {
if (ParameterProcessor.applyAnnotations(swagger, parameter, type, annotations) != null) {
processed.add(parameter);
}
}
return processed;
} else {
LOGGER.debug("no parameter found, looking at body params");
final List body = new ArrayList();
if (!typesToSkip.contains(type)) {
Parameter param = ParameterProcessor.applyAnnotations(swagger, null, type, annotations);
if (param != null) {
body.add(param);
}
}
return body;
}
}
public String extractOperationMethod(ApiOperation apiOperation, Method method, Iterator chain) {
if (apiOperation != null && !"".equals(apiOperation.httpMethod())) {
return apiOperation.httpMethod().toLowerCase();
} else if (method.getAnnotation(javax.ws.rs.GET.class) != null) {
return "get";
} else if (method.getAnnotation(javax.ws.rs.PUT.class) != null) {
return "put";
} else if (method.getAnnotation(javax.ws.rs.POST.class) != null) {
return "post";
} else if (method.getAnnotation(javax.ws.rs.DELETE.class) != null) {
return "delete";
} else if (method.getAnnotation(javax.ws.rs.OPTIONS.class) != null) {
return "options";
} else if (method.getAnnotation(javax.ws.rs.HEAD.class) != null) {
return "head";
} else if (method.getAnnotation(PATCH.class) != null) {
return "patch";
} else if (method.getAnnotation(HttpMethod.class) != null) {
HttpMethod httpMethod = method.getAnnotation(HttpMethod.class);
return httpMethod.value().toLowerCase();
} else if (!StringUtils.isEmpty(getHttpMethodFromCustomAnnotations(method))) {
return getHttpMethodFromCustomAnnotations(method);
} else if ((ReflectionUtils.getOverriddenMethod(method)) != null) {
return extractOperationMethod(apiOperation, ReflectionUtils.getOverriddenMethod(method), chain);
} else if (chain != null && chain.hasNext()) {
return chain.next().extractOperationMethod(apiOperation, method, chain);
} else {
return null;
}
}
private String getHttpMethodFromCustomAnnotations(Method method) {
for (Annotation methodAnnotation : method.getAnnotations()) {
HttpMethod httpMethod = methodAnnotation.annotationType().getAnnotation(HttpMethod.class);
if (httpMethod != null) {
return httpMethod.value().toLowerCase();
}
}
return null;
}
private static Set parseSchemes(String schemes) {
final Set result = EnumSet.noneOf(Scheme.class);
for (String item : StringUtils.trimToEmpty(schemes).split(",")) {
final Scheme scheme = Scheme.forValue(StringUtils.trimToNull(item));
if (scheme != null) {
result.add(scheme);
}
}
return result;
}
private void appendModels(Type type) {
final Map models = ModelConverters.getInstance().readAll(type);
for (Map.Entry entry : models.entrySet()) {
swagger.model(entry.getKey(), entry.getValue());
}
}
private static boolean isVoid(Type type) {
final Class cls = TypeFactory.defaultInstance().constructType(type).getRawClass();
return Void.class.isAssignableFrom(cls) || Void.TYPE.isAssignableFrom(cls);
}
private boolean isIgnored(String path) {
for (String item : config.getIgnoredRoutes()) {
final int length = item.length();
if (path.startsWith(item) && (path.length() == length || path.startsWith(PATH_DELIMITER, length))) {
return true;
}
}
return false;
}
private static boolean isValidResponse(Type type) {
if (type == null) {
return false;
}
final JavaType javaType = TypeFactory.defaultInstance().constructType(type);
if (isVoid(javaType)) {
return false;
}
final Class cls = javaType.getRawClass();
return !javax.ws.rs.core.Response.class.isAssignableFrom(cls) && !isResourceClass(cls);
}
private static boolean isResourceClass(Class cls) {
return cls.getAnnotation(Api.class) != null;
}
public ReaderConfig getConfig() {
return config;
}
enum ContainerWrapper {
LIST("list") {
@Override
protected Property doWrap(Property property) {
return new ArrayProperty(property);
}
},
ARRAY("array") {
@Override
protected Property doWrap(Property property) {
return new ArrayProperty(property);
}
},
MAP("map") {
@Override
protected Property doWrap(Property property) {
return new MapProperty(property);
}
},
SET("set") {
@Override
protected Property doWrap(Property property) {
ArrayProperty arrayProperty = new ArrayProperty(property);
arrayProperty.setUniqueItems(true);
return arrayProperty;
}
};
private final String container;
ContainerWrapper(String container) {
this.container = container;
}
public static Property wrapContainer(String container, Property property, ContainerWrapper... allowed) {
final Set tmp = (allowed.length > 0) ? EnumSet.copyOf(Arrays.asList(allowed))
: EnumSet.allOf(ContainerWrapper.class);
for (ContainerWrapper wrapper : tmp) {
final Property prop = wrapper.wrap(container, property);
if (prop != null) {
return prop;
}
}
return property;
}
public Property wrap(String container, Property property) {
if (this.container.equalsIgnoreCase(container)) {
return doWrap(property);
}
return null;
}
protected abstract Property doWrap(Property property);
}
protected String getOperationId(String operationId) {
boolean operationIdUsed = existOperationId(operationId);
String operationIdToFind = null;
int counter = 0;
while (operationIdUsed) {
operationIdToFind = String.format("%s_%d", operationId, ++counter);
operationIdUsed = existOperationId(operationIdToFind);
}
if (operationIdToFind != null) {
operationId = operationIdToFind;
}
return operationId;
}
private boolean existOperationId(String operationId) {
if (swagger == null) {
return false;
}
if (swagger.getPaths() == null || swagger.getPaths().isEmpty()) {
return false;
}
for (Path path : swagger.getPaths().values()) {
for (Operation op : path.getOperations()) {
if (operationId.equalsIgnoreCase(op.getOperationId())) {
return true;
}
}
}
return false;
}
}