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org.openapitools.codegen.languages.CSharpNancyFXServerCodegen Maven / Gradle / Ivy
/*
* Copyright 2018 OpenAPI-Generator Contributors (https://openapi-generator.tech)
* Copyright 2018 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 org.openapitools.codegen.languages;
import com.google.common.base.Predicate;
import com.google.common.collect.*;
import io.swagger.v3.oas.models.OpenAPI;
import io.swagger.v3.oas.models.media.Schema;
import org.openapitools.codegen.*;
import org.openapitools.codegen.utils.ModelUtils;
import org.openapitools.codegen.utils.URLPathUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.File;
import java.net.URL;
import java.util.*;
import java.util.Map.Entry;
import static com.google.common.base.Strings.isNullOrEmpty;
import static java.util.Arrays.asList;
import static java.util.UUID.randomUUID;
import static org.apache.commons.lang3.StringUtils.capitalize;
import static org.openapitools.codegen.CodegenConstants.*;
import static org.openapitools.codegen.CodegenType.SERVER;
import static org.openapitools.codegen.utils.StringUtils.camelize;
public class CSharpNancyFXServerCodegen extends AbstractCSharpCodegen {
private static final Logger LOGGER = LoggerFactory.getLogger(CSharpNancyFXServerCodegen.class);
private static final String API_NAMESPACE = "Modules";
private static final String MODEL_NAMESPACE = "Models";
private static final String IMMUTABLE_OPTION = "immutable";
private static final String USE_BASE_PATH = "writeModulePath";
private static final String PACKAGE_CONTEXT = "packageContext";
private static final String ASYNC_SERVER = "asyncServer";
private static final Map> propertyToOpenAPITypeMapping =
createPropertyToOpenAPITypeMapping();
private String packageGuid = "{" + randomUUID().toString().toUpperCase(Locale.ROOT) + "}";
private final Map dependencies = new HashMap<>();
private final Set parentModels = new HashSet<>();
private final Multimap childrenByParent = ArrayListMultimap.create();
private final BiMap modelNameMapping = HashBiMap.create();
/**
* If set to true, we will generate c# async endpoints and service interfaces
*/
private boolean asyncServer = false;
public CSharpNancyFXServerCodegen() {
outputFolder = "generated-code" + File.separator + getName();
apiTemplateFiles.put("api.mustache", ".cs");
// Early versions use no prefix for interfaces. Defaulting to I- common practice would break existing users.
setInterfacePrefix("");
// contextually reserved words
setReservedWordsLowerCase(
asList("var", "async", "await", "dynamic", "yield")
);
cliOptions.clear();
// CLI options
addOption(PACKAGE_NAME, "C# package name (convention: Title.Case).", packageName);
addOption(PACKAGE_VERSION, "C# package version.", packageVersion);
addOption(SOURCE_FOLDER, SOURCE_FOLDER_DESC, sourceFolder);
addOption(INTERFACE_PREFIX, INTERFACE_PREFIX_DESC, interfacePrefix);
addOption(OPTIONAL_PROJECT_GUID, OPTIONAL_PROJECT_GUID_DESC, null);
addOption(PACKAGE_CONTEXT, "Optionally overrides the PackageContext which determines the namespace (namespace=packageName.packageContext). If not set, packageContext will default to basePath.", null);
// CLI Switches
addSwitch(SORT_PARAMS_BY_REQUIRED_FLAG, SORT_PARAMS_BY_REQUIRED_FLAG_DESC, sortParamsByRequiredFlag);
addSwitch(OPTIONAL_PROJECT_FILE, OPTIONAL_PROJECT_FILE_DESC, optionalProjectFileFlag);
addSwitch(USE_DATETIME_OFFSET, USE_DATETIME_OFFSET_DESC, useDateTimeOffsetFlag);
addSwitch(USE_COLLECTION, USE_COLLECTION_DESC, useCollection);
addSwitch(RETURN_ICOLLECTION, RETURN_ICOLLECTION_DESC, returnICollection);
addSwitch(IMMUTABLE_OPTION, "Enabled by default. If disabled generates model classes with setters", true);
addSwitch(USE_BASE_PATH, "Enabled by default. If disabled, module paths will not mirror api base path", true);
addSwitch(ASYNC_SERVER, "Set to true to enable the generation of async routes/endpoints.", this.asyncServer);
typeMapping.putAll(nodaTimeTypesMappings());
languageSpecificPrimitives.addAll(nodaTimePrimitiveTypes());
importMapping.clear();
}
@Override
public CodegenType getTag() {
return SERVER;
}
@Override
public String getName() {
return "csharp-nancyfx";
}
@Override
public String getHelp() {
return "Generates a C# NancyFX Web API server.";
}
@Override
public void processOpts() {
super.processOpts();
apiPackage = isNullOrEmpty(packageName) ? API_NAMESPACE : packageName + "." + API_NAMESPACE;
modelPackage = isNullOrEmpty(packageName) ? MODEL_NAMESPACE : packageName + "." + MODEL_NAMESPACE;
supportingFiles.add(new SupportingFile("parameters.mustache", sourceFile("Utils"), "Parameters.cs"));
supportingFiles.add(new SupportingFile("localDateConverter.mustache", sourceFile("Utils"), "LocalDateConverter.cs"));
supportingFiles.add(new SupportingFile("packages.config.mustache", sourceFolder(), "packages.config"));
supportingFiles.add(new SupportingFile("nuspec.mustache", sourceFolder(), packageName + ".nuspec"));
if (optionalProjectFileFlag) {
supportingFiles.add(new SupportingFile("Solution.mustache", "", packageName + ".sln"));
supportingFiles.add(new SupportingFile("Project.mustache", sourceFolder(), packageName + ".csproj"));
}
if (additionalProperties.containsKey(OPTIONAL_PROJECT_GUID)) {
setPackageGuid((String) additionalProperties.get(OPTIONAL_PROJECT_GUID));
}
if (additionalProperties.containsKey(ASYNC_SERVER)) {
setAsyncServer(convertPropertyToBooleanAndWriteBack(ASYNC_SERVER));
} else {
additionalProperties.put(ASYNC_SERVER, this.asyncServer);
}
additionalProperties.put("packageGuid", packageGuid);
setupModelTemplate();
processImportedMappings();
appendDependencies();
}
private void setupModelTemplate() {
final Object immutableOption = additionalProperties.get(IMMUTABLE_OPTION);
if (immutableOption != null && "false".equalsIgnoreCase(immutableOption.toString())) {
LOGGER.info("Using mutable model template");
modelTemplateFiles.put("modelMutable.mustache", ".cs");
} else {
LOGGER.info("Using immutable model template");
modelTemplateFiles.put("model.mustache", ".cs");
}
}
private void processImportedMappings() {
for (final Entry entry : ImmutableSet.copyOf(importMapping.entrySet())) {
final String model = entry.getKey();
final String[] namespaceInfo = entry.getValue().split("\\s");
final String[] namespace = (namespaceInfo.length > 0 ? namespaceInfo[0].trim() : "").split(":");
final String namespaceName = namespace.length > 0 ? namespace[0].trim() : null;
final String modelClass = namespace.length > 1 ? namespace[1].trim() : null;
final String assembly = namespaceInfo.length > 1 ? namespaceInfo[1].trim() : null;
final String assemblyVersion = namespaceInfo.length > 2 ? namespaceInfo[2].trim() : null;
final String assemblyFramework = namespaceInfo.length > 3 ? namespaceInfo[3].trim() : "net45";
if (isNullOrEmpty(model) || isNullOrEmpty(namespaceName)) {
LOGGER.warn(String.format(Locale.ROOT, "Could not import: '%s' - invalid namespace: '%s'", model, entry.getValue()));
importMapping.remove(model);
} else {
LOGGER.info(String.format(Locale.ROOT, "Importing: '%s' from '%s' namespace.", model, namespaceName));
importMapping.put(model, namespaceName);
}
if (!isNullOrEmpty(modelClass)) {
LOGGER.info(String.format(Locale.ROOT, "Mapping: '%s' class to '%s'", model, modelClass));
modelNameMapping.put(model, modelClass);
}
if (assembly != null && assemblyVersion != null) {
LOGGER.info(String.format(Locale.ROOT, "Adding dependency: '%s', version: '%s', framework: '%s'",
assembly, assemblyVersion, assemblyVersion));
dependencies.put(assembly, new DependencyInfo(assemblyVersion, assemblyFramework));
}
}
}
private void appendDependencies() {
final List> listOfDependencies = new ArrayList<>();
for (final Entry dependency : dependencies.entrySet()) {
final Map dependencyInfo = new HashMap<>();
dependencyInfo.put("dependency", dependency.getKey());
dependencyInfo.put("dependencyVersion", dependency.getValue().version);
dependencyInfo.put("dependencyFramework", dependency.getValue().framework);
listOfDependencies.add(dependencyInfo);
}
additionalProperties.put("dependencies", listOfDependencies);
}
private String sourceFolder() {
return "src" + File.separator + packageName;
}
private String sourceFile(final String fileName) {
return sourceFolder() + File.separator + fileName;
}
public void setPackageGuid(String packageGuid) {
this.packageGuid = packageGuid;
}
public void setAsyncServer(boolean asyncServer) {
this.asyncServer = asyncServer;
}
@Override
public String apiFileFolder() {
return outputFolder + File.separator + sourceFolder() + File.separator + API_NAMESPACE;
}
@Override
public String modelFileFolder() {
return outputFolder + File.separator + sourceFolder() + File.separator + MODEL_NAMESPACE;
}
@Override
protected void processOperation(final CodegenOperation operation) {
super.processOperation(operation);
if (!isNullOrEmpty(operation.path) && operation.path.contains("?")) {
operation.path = operation.path.replace("?", "/");
}
if (!isNullOrEmpty(operation.httpMethod)) {
operation.httpMethod = capitalize(operation.httpMethod.toLowerCase(Locale.ROOT));
}
}
@Override
public Map postProcessAllModels(final Map models) {
final Map processed = super.postProcessAllModels(models);
postProcessParentModels(models);
return processed;
}
private void postProcessParentModels(final Map models) {
LOGGER.debug("Processing parents: " + parentModels);
for (final String parent : parentModels) {
final CodegenModel parentModel = ModelUtils.getModelByName(parent, models);
if (parentModel != null) {
parentModel.hasChildren = true;
final Collection childrenModels = childrenByParent.get(parent);
for (final CodegenModel child : childrenModels) {
processParentPropertiesInChildModel(parentModel, child);
}
}
}
}
private void processParentPropertiesInChildModel(final CodegenModel parent, final CodegenModel child) {
final Map childPropertiesByName = new HashMap<>(child.vars.size());
for (final CodegenProperty property : child.vars) {
childPropertiesByName.put(property.name, property);
}
CodegenProperty previousParentVar = null;
for (final CodegenProperty property : parent.vars) {
final CodegenProperty duplicatedByParent = childPropertiesByName.get(property.name);
if (duplicatedByParent != null) {
LOGGER.info(String.format(Locale.ROOT, "Property: '%s' in '%s' model is inherited from '%s'",
property.name, child.classname, parent.classname));
duplicatedByParent.isInherited = true;
final CodegenProperty parentVar = duplicatedByParent.clone();
parentVar.hasMore = false;
child.parentVars.add(parentVar);
if (previousParentVar != null) {
previousParentVar.hasMore = true;
}
previousParentVar = parentVar;
}
}
}
@Override
public void postProcessModelProperty(final CodegenModel model, final CodegenProperty property) {
super.postProcessModelProperty(model, property);
if (!isNullOrEmpty(model.parent)) {
parentModels.add(model.parent);
if (!childrenByParent.containsEntry(model.parent, model)) {
childrenByParent.put(model.parent, model);
}
}
}
@Override
public String toEnumVarName(final String name, final String datatype) {
if (name.length() == 0) {
return "Empty";
}
final String enumName = camelize(
sanitizeName(name)
.replaceFirst("^_", "")
.replaceFirst("_$", "")
.replaceAll("-", "_"));
final String result;
if (enumName.matches("\\d.*")) {
result = "_" + enumName;
} else {
result = enumName;
}
LOGGER.debug(String.format(Locale.ROOT, "toEnumVarName('%s', %s) = '%s'", name, datatype, enumName));
return result;
}
@Override
public String toApiName(final String name) {
final String apiName;
if (isNullOrEmpty(name)) {
apiName = "Default";
} else {
apiName = capitalize(name);
}
LOGGER.debug(String.format(Locale.ROOT, "toApiName('%s') = '%s'", name, apiName));
return apiName;
}
@Override
public String toApiFilename(final String name) {
return super.toApiFilename(name) + "Module";
}
@Override
public String toModelImport(final String name) {
final String result;
if (modelNameMapping.containsValue(name)) {
final String modelName = modelNameMapping.inverse().get(name);
result = importMapping.containsKey(modelName) ?
importMapping.get(modelName) : super.toModelImport(name);
} else if (importMapping.containsKey(name)) {
result = importMapping.get(name);
} else {
result = null;
}
LOGGER.debug(String.format(Locale.ROOT, "toModelImport('%s') = '%s'", name, result));
return result;
}
@Override
public String toModelName(final String name) {
final String modelName = super.toModelName(name);
final String mappedModelName = modelNameMapping.get(modelName);
return isNullOrEmpty(mappedModelName) ? modelName : mappedModelName;
}
@Override
public void preprocessOpenAPI(final OpenAPI openAPI) {
URL url = URLPathUtils.getServerURL(openAPI);
String path = URLPathUtils.getPath(url, "/");
final String packageContextOption = (String) additionalProperties.get(PACKAGE_CONTEXT);
additionalProperties.put("packageContext", packageContextOption == null ? sanitizeName(path) : packageContextOption);
final Object basePathOption = additionalProperties.get(USE_BASE_PATH);
additionalProperties.put("baseContext", basePathOption == null ? path : "/");
}
@Override
public String toEnumName(final CodegenProperty property) {
return sanitizeName(camelize(property.name)) + "Enum";
}
@Override
public String getSchemaType(final Schema property) {
for (Entry> entry : propertyToOpenAPITypeMapping.entrySet()) {
if (entry.getValue().apply(property)) {
return entry.getKey();
}
}
return super.getSchemaType(property);
}
private static Map> createPropertyToOpenAPITypeMapping() {
final ImmutableMap.Builder> mapping = ImmutableMap.builder();
mapping.put("time", timeProperty());
return mapping.build();
}
private static Predicate timeProperty() {
return new Predicate() {
@Override
public boolean apply(Schema property) {
return ModelUtils.isStringSchema(property) && "time".equalsIgnoreCase(property.getFormat());
}
};
}
private static Map nodaTimeTypesMappings() {
return ImmutableMap.of(
"time", "LocalTime?",
"date", "LocalDate?",
"datetime", "ZonedDateTime?");
}
private static Set nodaTimePrimitiveTypes() {
return ImmutableSet.of("LocalTime?", "LocalDate?", "ZonedDateTime?");
}
private class DependencyInfo {
private final String version;
private final String framework;
private DependencyInfo(final String version, final String framework) {
this.version = version;
this.framework = framework;
}
}
}
