io.swagger.codegen.languages.java.JavaClientCodegen Maven / Gradle / Ivy
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package io.swagger.codegen.languages.java;
import static io.swagger.codegen.CodegenConstants.IS_ENUM_EXT_NAME;
import static io.swagger.codegen.languages.helpers.ExtensionHelper.getBooleanValue;
import static java.util.Collections.sort;
import io.swagger.codegen.CliOption;
import io.swagger.codegen.CodegenConstants;
import io.swagger.codegen.CodegenModel;
import io.swagger.codegen.CodegenOperation;
import io.swagger.codegen.CodegenParameter;
import io.swagger.codegen.CodegenProperty;
import io.swagger.codegen.CodegenType;
import io.swagger.codegen.SupportingFile;
import io.swagger.codegen.languages.features.BeanValidationFeatures;
import io.swagger.codegen.languages.features.GzipFeatures;
import io.swagger.codegen.languages.features.PerformBeanValidationFeatures;
import org.apache.commons.io.FileUtils;
import org.apache.commons.lang3.BooleanUtils;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.File;
import java.util.ArrayList;
import java.util.Comparator;
import java.util.HashMap;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.regex.Pattern;
public class JavaClientCodegen extends AbstractJavaCodegen implements BeanValidationFeatures, PerformBeanValidationFeatures, GzipFeatures {
static final String MEDIA_TYPE = "mediaType";
private static final Logger LOGGER = LoggerFactory.getLogger(JavaClientCodegen.class);
public static final String USE_RX_JAVA = "useRxJava";
public static final String USE_RX_JAVA2 = "useRxJava2";
public static final String DO_NOT_USE_RX = "doNotUseRx";
public static final String USE_PLAY_WS = "usePlayWS";
public static final String PLAY_VERSION = "playVersion";
public static final String PARCELABLE_MODEL = "parcelableModel";
public static final String USE_RUNTIME_EXCEPTION = "useRuntimeException";
public static final String PLAY_24 = "play24";
public static final String PLAY_25 = "play25";
public static final String RETROFIT_1 = "retrofit";
public static final String RETROFIT_2 = "retrofit2";
protected String gradleWrapperPackage = "gradle.wrapper";
protected boolean useRxJava = false;
protected boolean useRxJava2 = false;
protected boolean doNotUseRx = true; // backwards compatibility for swagger configs that specify neither rx1 nor rx2 (mustache does not allow for boolean operators so we need this extra field)
protected boolean usePlayWS = false;
protected String playVersion = PLAY_25;
protected boolean parcelableModel = false;
protected boolean useBeanValidation = false;
protected boolean performBeanValidation = false;
protected boolean useGzipFeature = false;
protected boolean useRuntimeException = false;
public JavaClientCodegen() {
super();
outputFolder = "generated-code" + File.separator + "java";
invokerPackage = "io.swagger.client";
artifactId = "swagger-java-client";
apiPackage = "io.swagger.client.api";
modelPackage = "io.swagger.client.model";
cliOptions.add(CliOption.newBoolean(USE_RX_JAVA, "Whether to use the RxJava adapter with the retrofit2 library."));
cliOptions.add(CliOption.newBoolean(USE_RX_JAVA2, "Whether to use the RxJava2 adapter with the retrofit2 library."));
cliOptions.add(CliOption.newBoolean(PARCELABLE_MODEL, "Whether to generate models for Android that implement Parcelable with the okhttp-gson library."));
cliOptions.add(CliOption.newBoolean(USE_PLAY_WS, "Use Play! Async HTTP client (Play WS API)"));
cliOptions.add(CliOption.newString(PLAY_VERSION, "Version of Play! Framework (possible values \"play24\", \"play25\")"));
cliOptions.add(CliOption.newBoolean(SUPPORT_JAVA6, "Whether to support Java6 with the Jersey1 library."));
cliOptions.add(CliOption.newBoolean(USE_BEANVALIDATION, "Use BeanValidation API annotations"));
cliOptions.add(CliOption.newBoolean(PERFORM_BEANVALIDATION, "Perform BeanValidation"));
cliOptions.add(CliOption.newBoolean(USE_GZIP_FEATURE, "Send gzip-encoded requests"));
cliOptions.add(CliOption.newBoolean(USE_RUNTIME_EXCEPTION, "Use RuntimeException instead of Exception"));
supportedLibraries.put("jersey1", "HTTP client: Jersey client 1.19.4. JSON processing: Jackson 2.8.9. Enable Java6 support using '-DsupportJava6=true'. Enable gzip request encoding using '-DuseGzipFeature=true'.");
supportedLibraries.put("feign", "HTTP client: OpenFeign 9.4.0. JSON processing: Jackson 2.8.9");
supportedLibraries.put("jersey2", "HTTP client: Jersey client 2.25.1. JSON processing: Jackson 2.8.9");
supportedLibraries.put("okhttp-gson", "HTTP client: OkHttp 2.7.5. JSON processing: Gson 2.8.1. Enable Parcelable models on Android using '-DparcelableModel=true'. Enable gzip request encoding using '-DuseGzipFeature=true'.");
supportedLibraries.put(RETROFIT_1, "HTTP client: OkHttp 2.7.5. JSON processing: Gson 2.3.1 (Retrofit 1.9.0). IMPORTANT NOTE: retrofit1.x is no longer actively maintained so please upgrade to 'retrofit2' instead.");
supportedLibraries.put(RETROFIT_2, "HTTP client: OkHttp 3.8.0. JSON processing: Gson 2.6.1 (Retrofit 2.3.0). Enable the RxJava adapter using '-DuseRxJava[2]=true'. (RxJava 1.x or 2.x)");
supportedLibraries.put("resttemplate", "HTTP client: Spring RestTemplate 4.3.9-RELEASE. JSON processing: Jackson 2.8.9");
supportedLibraries.put("resteasy", "HTTP client: Resteasy client 3.1.3.Final. JSON processing: Jackson 2.8.9");
supportedLibraries.put("vertx", "HTTP client: VertX client 3.2.4. JSON processing: Jackson 2.8.9");
supportedLibraries.put("google-api-client", "HTTP client: Google API client 1.23.0. JSON processing: Jackson 2.8.9");
CliOption libraryOption = new CliOption(CodegenConstants.LIBRARY, "library template (sub-template) to use");
libraryOption.setEnum(supportedLibraries);
// set okhttp-gson as the default
libraryOption.setDefault("okhttp-gson");
cliOptions.add(libraryOption);
setLibrary("okhttp-gson");
}
@Override
public CodegenType getTag() {
return CodegenType.CLIENT;
}
@Override
public String getName() {
return "java";
}
@Override
public String getHelp() {
return "Generates a Java client library.";
}
@Override
public void processOpts() {
super.processOpts();
if (StringUtils.isBlank(templateDir)) {
String templateVersion = getTemplateVersion();
if (StringUtils.isNotBlank(templateVersion)) {
embeddedTemplateDir = templateDir = String.format("%s" + File.separator + "Java", templateVersion);
} else {
embeddedTemplateDir = templateDir = String.format("%s" + File.separator + "Java", DEFAULT_TEMPLATE_VERSION);
}
}
if (additionalProperties.containsKey(USE_RX_JAVA) && additionalProperties.containsKey(USE_RX_JAVA2)) {
LOGGER.warn("You specified both RxJava versions 1 and 2 but they are mutually exclusive. Defaulting to v2.");
} else if (additionalProperties.containsKey(USE_RX_JAVA)) {
this.setUseRxJava(Boolean.valueOf(additionalProperties.get(USE_RX_JAVA).toString()));
}
if (additionalProperties.containsKey(USE_RX_JAVA2)) {
this.setUseRxJava2(Boolean.valueOf(additionalProperties.get(USE_RX_JAVA2).toString()));
}
if (!useRxJava && !useRxJava2) {
additionalProperties.put(DO_NOT_USE_RX, true);
}
if (additionalProperties.containsKey(USE_PLAY_WS)) {
this.setUsePlayWS(Boolean.valueOf(additionalProperties.get(USE_PLAY_WS).toString()));
}
additionalProperties.put(USE_PLAY_WS, usePlayWS);
if (additionalProperties.containsKey(PLAY_VERSION)) {
this.setPlayVersion(additionalProperties.get(PLAY_VERSION).toString());
}
additionalProperties.put(PLAY_VERSION, playVersion);
if (additionalProperties.containsKey(PARCELABLE_MODEL)) {
this.setParcelableModel(Boolean.valueOf(additionalProperties.get(PARCELABLE_MODEL).toString()));
}
// put the boolean value back to PARCELABLE_MODEL in additionalProperties
additionalProperties.put(PARCELABLE_MODEL, parcelableModel);
if (additionalProperties.containsKey(USE_BEANVALIDATION)) {
this.setUseBeanValidation(convertPropertyToBooleanAndWriteBack(USE_BEANVALIDATION));
}
if (additionalProperties.containsKey(PERFORM_BEANVALIDATION)) {
this.setPerformBeanValidation(convertPropertyToBooleanAndWriteBack(PERFORM_BEANVALIDATION));
}
if (additionalProperties.containsKey(USE_GZIP_FEATURE)) {
this.setUseGzipFeature(convertPropertyToBooleanAndWriteBack(USE_GZIP_FEATURE));
}
if (additionalProperties.containsKey(USE_RUNTIME_EXCEPTION)) {
this.setUseRuntimeException(convertPropertyToBooleanAndWriteBack(USE_RUNTIME_EXCEPTION));
}
final String invokerFolder = (sourceFolder + File.separator + invokerPackage).replace(".", File.separator);
final String authFolder = (sourceFolder + File.separator + invokerPackage + ".auth").replace(".", File.separator);
final String apiFolder = (sourceFolder + File.separator + apiPackage).replace(".", File.separator);
//Common files
writeOptional(outputFolder, new SupportingFile("pom.mustache", "", "pom.xml"));
writeOptional(outputFolder, new SupportingFile("README.mustache", "", "README.md"));
writeOptional(outputFolder, new SupportingFile("build.gradle.mustache", "", "build.gradle"));
writeOptional(outputFolder, new SupportingFile("build.sbt.mustache", "", "build.sbt"));
writeOptional(outputFolder, new SupportingFile("settings.gradle.mustache", "", "settings.gradle"));
writeOptional(outputFolder, new SupportingFile("gradle.properties.mustache", "", "gradle.properties"));
writeOptional(outputFolder, new SupportingFile("manifest.mustache", projectFolder, "AndroidManifest.xml"));
supportingFiles.add(new SupportingFile("travis.mustache", "", ".travis.yml"));
supportingFiles.add(new SupportingFile("ApiClient.mustache", invokerFolder, "ApiClient.java"));
if(!"resttemplate".equals(getLibrary())) {
supportingFiles.add(new SupportingFile("StringUtil.mustache", invokerFolder, "StringUtil.java"));
}
// google-api-client doesn't use the Swagger auth, because it uses Google Credential directly (HttpRequestInitializer)
if (!"google-api-client".equals(getLibrary())) {
supportingFiles.add(new SupportingFile("auth/HttpBasicAuth.mustache", authFolder, "HttpBasicAuth.java"));
supportingFiles.add(new SupportingFile("auth/ApiKeyAuth.mustache", authFolder, "ApiKeyAuth.java"));
supportingFiles.add(new SupportingFile("auth/OAuth.mustache", authFolder, "OAuth.java"));
supportingFiles.add(new SupportingFile("auth/OAuthFlow.mustache", authFolder, "OAuthFlow.java"));
}
supportingFiles.add(new SupportingFile( "gradlew.mustache", "", "gradlew") );
supportingFiles.add(new SupportingFile( "gradlew.bat.mustache", "", "gradlew.bat") );
supportingFiles.add(new SupportingFile( "gradle-wrapper.properties.mustache",
gradleWrapperPackage.replace( ".", File.separator ), "gradle-wrapper.properties") );
supportingFiles.add(new SupportingFile( "gradle-wrapper.jar",
gradleWrapperPackage.replace( ".", File.separator ), "gradle-wrapper.jar") );
supportingFiles.add(new SupportingFile("git_push.sh.mustache", "", "git_push.sh"));
supportingFiles.add(new SupportingFile("gitignore.mustache", "", ".gitignore"));
if (performBeanValidation) {
supportingFiles.add(new SupportingFile("BeanValidationException.mustache", invokerFolder,
"BeanValidationException.java"));
}
//TODO: add doc to retrofit1 and feign
if ( "feign".equals(getLibrary()) || "retrofit".equals(getLibrary()) ){
modelDocTemplateFiles.remove("model_doc.mustache");
apiDocTemplateFiles.remove("api_doc.mustache");
}
if (!("feign".equals(getLibrary()) || "resttemplate".equals(getLibrary()) || usesAnyRetrofitLibrary() || "google-api-client".equals(getLibrary()))) {
supportingFiles.add(new SupportingFile("apiException.mustache", invokerFolder, "ApiException.java"));
supportingFiles.add(new SupportingFile("Configuration.mustache", invokerFolder, "Configuration.java"));
supportingFiles.add(new SupportingFile("Pair.mustache", invokerFolder, "Pair.java"));
supportingFiles.add(new SupportingFile("auth/Authentication.mustache", authFolder, "Authentication.java"));
}
if ("feign".equals(getLibrary())) {
additionalProperties.put("jackson", "true");
supportingFiles.add(new SupportingFile("ParamExpander.mustache", invokerFolder, "ParamExpander.java"));
supportingFiles.add(new SupportingFile("EncodingUtils.mustache", invokerFolder, "EncodingUtils.java"));
} else if ("okhttp-gson".equals(getLibrary()) || StringUtils.isEmpty(getLibrary())) {
// the "okhttp-gson" library template requires "ApiCallback.mustache" for async call
supportingFiles.add(new SupportingFile("ApiCallback.mustache", invokerFolder, "ApiCallback.java"));
supportingFiles.add(new SupportingFile("ApiResponse.mustache", invokerFolder, "ApiResponse.java"));
supportingFiles.add(new SupportingFile("JSON.mustache", invokerFolder, "JSON.java"));
supportingFiles.add(new SupportingFile("ProgressRequestBody.mustache", invokerFolder, "ProgressRequestBody.java"));
supportingFiles.add(new SupportingFile("ProgressResponseBody.mustache", invokerFolder, "ProgressResponseBody.java"));
supportingFiles.add(new SupportingFile("GzipRequestInterceptor.mustache", invokerFolder, "GzipRequestInterceptor.java"));
additionalProperties.put("gson", "true");
} else if (usesAnyRetrofitLibrary()) {
supportingFiles.add(new SupportingFile("auth/OAuthOkHttpClient.mustache", authFolder, "OAuthOkHttpClient.java"));
supportingFiles.add(new SupportingFile("CollectionFormats.mustache", invokerFolder, "CollectionFormats.java"));
additionalProperties.put("gson", "true");
if ("retrofit2".equals(getLibrary()) && !usePlayWS) {
supportingFiles.add(new SupportingFile("JSON.mustache", invokerFolder, "JSON.java"));
}
} else if ("jersey2".equals(getLibrary()) || "resteasy".equals(getLibrary())) {
supportingFiles.add(new SupportingFile("JSON.mustache", invokerFolder, "JSON.java"));
additionalProperties.put("jackson", "true");
} else if("jersey1".equals(getLibrary())) {
additionalProperties.put("jackson", "true");
} else if("resttemplate".equals(getLibrary())) {
additionalProperties.put("jackson", "true");
supportingFiles.add(new SupportingFile("auth/Authentication.mustache", authFolder, "Authentication.java"));
} else if("vertx".equals(getLibrary())) {
typeMapping.put("file", "AsyncFile");
importMapping.put("AsyncFile", "io.vertx.core.file.AsyncFile");
setJava8Mode(true);
additionalProperties.put("java8", "true");
additionalProperties.put("jackson", "true");
apiTemplateFiles.put("apiImpl.mustache", "Impl.java");
apiTemplateFiles.put("rxApiImpl.mustache", ".java");
supportingFiles.remove(new SupportingFile("manifest.mustache", projectFolder, "AndroidManifest.xml"));
} else if ("google-api-client".equals(getLibrary())) {
additionalProperties.put("jackson", "true");
} else {
LOGGER.error("Unknown library option (-l/--library): " + getLibrary());
}
if (usePlayWS) {
// remove unsupported auth
Iterator iter = supportingFiles.iterator();
while (iter.hasNext()) {
SupportingFile sf = iter.next();
if (sf.templateFile.startsWith("auth/")) {
iter.remove();
}
}
apiTemplateFiles.remove("api.mustache");
if (PLAY_24.equals(playVersion)) {
additionalProperties.put(PLAY_24, true);
apiTemplateFiles.put("play24/api.mustache", ".java");
supportingFiles.add(new SupportingFile("play24/ApiClient.mustache", invokerFolder, "ApiClient.java"));
supportingFiles.add(new SupportingFile("play24/Play24CallFactory.mustache", invokerFolder, "Play24CallFactory.java"));
supportingFiles.add(new SupportingFile("play24/Play24CallAdapterFactory.mustache", invokerFolder,
"Play24CallAdapterFactory.java"));
} else {
additionalProperties.put(PLAY_25, true);
apiTemplateFiles.put("play25/api.mustache", ".java");
supportingFiles.add(new SupportingFile("play25/ApiClient.mustache", invokerFolder, "ApiClient.java"));
supportingFiles.add(new SupportingFile("play25/Play25CallFactory.mustache", invokerFolder, "Play25CallFactory.java"));
supportingFiles.add(new SupportingFile("play25/Play25CallAdapterFactory.mustache", invokerFolder, "Play25CallAdapterFactory.java"));
additionalProperties.put("java8", "true");
}
supportingFiles.add(new SupportingFile("play-common/auth/ApiKeyAuth.mustache", authFolder, "ApiKeyAuth.java"));
supportingFiles.add(new SupportingFile("auth/Authentication.mustache", authFolder, "Authentication.java"));
supportingFiles.add(new SupportingFile("Pair.mustache", invokerFolder, "Pair.java"));
additionalProperties.put("jackson", "true");
additionalProperties.remove("gson");
}
if (additionalProperties.containsKey("jackson")) {
supportingFiles.add(new SupportingFile("RFC3339DateFormat.mustache", invokerFolder, "RFC3339DateFormat.java"));
if ("threetenbp".equals(dateLibrary) && !usePlayWS) {
supportingFiles.add(new SupportingFile("CustomInstantDeserializer.mustache", invokerFolder, "CustomInstantDeserializer.java"));
}
}
}
private boolean usesAnyRetrofitLibrary() {
return getLibrary() != null && getLibrary().contains(RETROFIT_1);
}
private boolean usesRetrofit2Library() {
return getLibrary() != null && getLibrary().contains(RETROFIT_2);
}
@SuppressWarnings("unchecked")
@Override
public Map postProcessOperations(Map objs) {
super.postProcessOperations(objs);
if (usesAnyRetrofitLibrary()) {
Map operations = (Map) objs.get("operations");
if (operations != null) {
List ops = (List) operations.get("operation");
for (CodegenOperation operation : ops) {
boolean hasConsumes = getBooleanValue(operation, CodegenConstants.HAS_CONSUMES_EXT_NAME);
if (hasConsumes) {
if (isMultipartType(operation.consumes)) {
operation.getVendorExtensions().put(CodegenConstants.IS_MULTIPART_EXT_NAME, Boolean.TRUE);
}
else {
operation.prioritizedContentTypes = prioritizeContentTypes(operation.consumes);
}
}
if (operation.returnType == null) {
operation.returnType = "Void";
}
if (usesRetrofit2Library() && StringUtils.isNotEmpty(operation.path) && operation.path.startsWith("/")){
operation.path = operation.path.substring(1);
}
// sorting operation parameters to make sure path params are parsed before query params
if (operation.allParams != null) {
sort(operation.allParams, new Comparator() {
@Override
public int compare(CodegenParameter one, CodegenParameter another) {
if (getBooleanValue(one, CodegenConstants.IS_PATH_PARAM_EXT_NAME)
&& getBooleanValue(another, CodegenConstants.IS_QUERY_PARAM_EXT_NAME)) {
return -1;
}
if (getBooleanValue(one, CodegenConstants.IS_QUERY_PARAM_EXT_NAME)
&& getBooleanValue(another, CodegenConstants.IS_PATH_PARAM_EXT_NAME)){
return 1;
}
return 0;
}
});
Iterator iterator = operation.allParams.iterator();
while (iterator.hasNext()){
CodegenParameter param = iterator.next();
param.getVendorExtensions().put(CodegenConstants.HAS_MORE_EXT_NAME, iterator.hasNext());
}
}
}
}
}
// camelize path variables for Feign client
if ("feign".equals(getLibrary())) {
Map operations = (Map) objs.get("operations");
List operationList = (List) operations.get("operation");
for (CodegenOperation op : operationList) {
String path = op.path;
String[] items = path.split("/", -1);
for (int i = 0; i < items.length; ++i) {
if (items[i].matches("^\\{(.*)\\}$")) { // wrap in {}
// camelize path variable
items[i] = "{" + camelize(items[i].substring(1, items[i].length()-1), true) + "}";
}
}
op.path = StringUtils.join(items, "/");
}
}
return objs;
}
@Override
public String apiFilename(String templateName, String tag) {
if("vertx".equals(getLibrary())) {
String suffix = apiTemplateFiles().get(templateName);
String subFolder = "";
if (templateName.startsWith("rx")) {
subFolder = "/rxjava";
}
return apiFileFolder() + subFolder + '/' + toApiFilename(tag) + suffix;
} else {
return super.apiFilename(templateName, tag);
}
}
/**
* Prioritizes consumes mime-type list by moving json-vendor and json mime-types up front, but
* otherwise preserves original consumes definition order.
* [application/vnd...+json,... application/json, ..as is..]
*
* @param consumes consumes mime-type list
* @return
*/
static List
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