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package io.swagger.codegen.languages;
import com.samskivert.mustache.Mustache;
import com.samskivert.mustache.Template;
import io.swagger.codegen.*;
import io.swagger.models.properties.*;
import io.swagger.models.Info;
import io.swagger.models.Model;
import io.swagger.models.Swagger;
import org.apache.commons.lang3.StringUtils;
import java.io.IOException;
import java.io.Writer;
import java.util.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class ElixirClientCodegen extends DefaultCodegen implements CodegenConfig {
protected String apiVersion = "1.0.0";
protected String moduleName;
protected static final String defaultModuleName = "Swagger.Client";
// This is the name of elixir project name;
protected static final String defaultPackageName = "swagger_client";
String supportedElixirVersion = "1.4";
List extraApplications = Arrays.asList(":logger");
List deps = Arrays.asList(
"{:tesla, \"~> 0.8\"}",
"{:poison, \">= 1.0.0\"}"
);
public ElixirClientCodegen() {
super();
// set the output folder here
outputFolder = "generated-code/elixir";
/*
* Models. You can write model files using the modelTemplateFiles map.
* if you want to create one template for file, you can do so here.
* for multiple files for model, just put another entry in the `modelTemplateFiles` with
* a different extension
*/
modelTemplateFiles.put(
"model.mustache", // the template to use
".ex"); // the extension for each file to write
/**
* Api classes. You can write classes for each Api file with the apiTemplateFiles map.
* as with models, add multiple entries with different extensions for multiple files per
* class
*/
apiTemplateFiles.put(
"api.mustache", // the template to use
".ex"); // the extension for each file to write
/**
* Template Location. This is the location which templates will be read from. The generator
* will use the resource stream to attempt to read the templates.
*/
templateDir = "elixir";
/**
* Reserved words. Override this with reserved words specific to your language
* Ref: https://github.com/itsgreggreg/elixir_quick_reference#reserved-words
*/
reservedWords = new HashSet(
Arrays.asList(
"nil",
"true",
"false",
"__MODULE__",
"__FILE__",
"__DIR__",
"__ENV__",
"__CALLER__")
);
/**
* Additional Properties. These values can be passed to the templates and
* are available in models, apis, and supporting files
*/
additionalProperties.put("apiVersion", apiVersion);
/**
* Supporting Files. You can write single files for the generator with the
* entire object tree available. If the input file has a suffix of `.mustache
* it will be processed by the template engine. Otherwise, it will be copied
*/
supportingFiles.add(new SupportingFile("README.md.mustache", // the input template or file
"", // the destination folder, relative `outputFolder`
"README.md") // the output file
);
supportingFiles.add(new SupportingFile("config.exs.mustache",
"config",
"config.exs")
);
supportingFiles.add(new SupportingFile("mix.exs.mustache",
"",
"mix.exs")
);
supportingFiles.add(new SupportingFile("test_helper.exs.mustache",
"test",
"test_helper.exs")
);
supportingFiles.add(new SupportingFile("gitignore.mustache",
"",
".gitignore")
);
/**
* Language Specific Primitives. These types will not trigger imports by
* the client generator
*/
languageSpecificPrimitives = new HashSet(
Arrays.asList(
"Integer",
"Float",
"Boolean",
"String",
"List",
"Atom",
"Map",
"Tuple",
"PID",
"DateTime"
)
);
// ref: https://github.com/OAI/OpenAPI-Specification/blob/master/versions/2.0.md#data-types
typeMapping = new HashMap();
typeMapping.put("integer", "Integer");
typeMapping.put("long", "Integer");
typeMapping.put("number", "Float");
typeMapping.put("float", "Float");
typeMapping.put("double", "Float");
typeMapping.put("string", "String");
typeMapping.put("byte", "Integer");
typeMapping.put("boolean", "Boolean");
typeMapping.put("Date", "DateTime");
typeMapping.put("DateTime", "DateTime");
typeMapping.put("file", "String");
typeMapping.put("map", "Map");
typeMapping.put("array", "List");
typeMapping.put("list", "List");
// typeMapping.put("object", "Map");
typeMapping.put("binary", "String");
typeMapping.put("ByteArray", "String");
typeMapping.put("UUID", "String");
cliOptions.add(new CliOption(CodegenConstants.INVOKER_PACKAGE, "The main namespace to use for all classes. e.g. Yay.Pets"));
cliOptions.add(new CliOption("licenseHeader", "The license header to prepend to the top of all source files."));
cliOptions.add(new CliOption(CodegenConstants.PACKAGE_NAME, "Elixir package name (convention: lowercase)."));
}
/**
* Configures the type of generator.
*
* @return the CodegenType for this generator
* @see io.swagger.codegen.CodegenType
*/
public CodegenType getTag() {
return CodegenType.CLIENT;
}
/**
* Configures a friendly name for the generator. This will be used by the generator
* to select the library with the -l flag.
*
* @return the friendly name for the generator
*/
public String getName() {
return "elixir";
}
/**
* Returns human-friendly help for the generator. Provide the consumer with help
* tips, parameters here
*
* @return A string value for the help message
*/
public String getHelp() {
return "Generates an elixir client library (alpha).";
}
@Override
public void processOpts() {
super.processOpts();
additionalProperties.put("supportedElixirVersion", supportedElixirVersion);
additionalProperties.put("extraApplications", join(",", extraApplications));
additionalProperties.put("deps", deps);
additionalProperties.put("underscored", new Mustache.Lambda() {
@Override
public void execute(Template.Fragment fragment, Writer writer) throws IOException {
writer.write(underscored(fragment.execute()));
}
});
additionalProperties.put("modulized", new Mustache.Lambda() {
@Override
public void execute(Template.Fragment fragment, Writer writer) throws IOException {
writer.write(modulized(fragment.execute()));
}
});
if (additionalProperties.containsKey(CodegenConstants.INVOKER_PACKAGE)) {
setModuleName((String) additionalProperties.get(CodegenConstants.INVOKER_PACKAGE));
}
}
@Override
public void preprocessSwagger(Swagger swagger) {
Info info = swagger.getInfo();
if (moduleName == null) {
if (info.getTitle() != null) {
// default to the appName (from title field)
setModuleName(modulized(escapeText(info.getTitle())));
} else {
setModuleName(defaultModuleName);
}
}
additionalProperties.put("moduleName", moduleName);
if (!additionalProperties.containsKey(CodegenConstants.PACKAGE_NAME)) {
additionalProperties.put(CodegenConstants.PACKAGE_NAME, underscored(moduleName));
}
supportingFiles.add(new SupportingFile("connection.ex.mustache",
sourceFolder(),
"connection.ex"));
supportingFiles.add(new SupportingFile("request_builder.ex.mustache",
sourceFolder(),
"request_builder.ex"));
supportingFiles.add(new SupportingFile("deserializer.ex.mustache",
sourceFolder(),
"deserializer.ex"));
}
@Override
public Map postProcessOperations(Map objs) {
Map operations = (Map) super.postProcessOperations(objs).get("operations");
List os = (List) operations.get("operation");
List newOs = new ArrayList();
Pattern pattern = Pattern.compile("\\{([^\\}]+)\\}([^\\{]*)");
for (CodegenOperation o : os) {
ArrayList pathTemplateNames = new ArrayList();
Matcher matcher = pattern.matcher(o.path);
StringBuffer buffer = new StringBuffer();
while (matcher.find()) {
String pathTemplateName = matcher.group(1);
matcher.appendReplacement(buffer, "#{" + underscore(pathTemplateName) + "}" + "$2");
pathTemplateNames.add(pathTemplateName);
}
ExtendedCodegenOperation eco = new ExtendedCodegenOperation(o);
if (buffer.toString().isEmpty()) {
eco.setReplacedPathName(o.path);
} else {
eco.setReplacedPathName(buffer.toString());
}
eco.setPathTemplateNames(pathTemplateNames);
// detect multipart form types
if (eco.hasConsumes == Boolean.TRUE) {
Map firstType = eco.consumes.get(0);
if (firstType != null) {
if ("multipart/form-data".equals(firstType.get("mediaType"))) {
eco.isMultipart = Boolean.TRUE;
}
}
}
newOs.add(eco);
}
operations.put("operation", newOs);
return objs;
}
@Override
public CodegenModel fromModel(String name, Model model, Map allDefinitions) {
CodegenModel cm = super.fromModel(name, model, allDefinitions);
return new ExtendedCodegenModel(cm);
}
// We should use String.join if we can use Java8
String join(CharSequence charSequence, Iterable iterable) {
StringBuilder buf = new StringBuilder();
for (String str : iterable) {
if (0 < buf.length()) {
buf.append((charSequence));
}
buf.append(str);
}
return buf.toString();
}
String underscored(String words) {
ArrayList underscoredWords = new ArrayList();
for (String word : words.split(" ")) {
underscoredWords.add(underscore(word));
}
return join("_", underscoredWords);
}
String modulized(String words) {
ArrayList modulizedWords = new ArrayList();
for (String word : words.split(" ")) {
modulizedWords.add(camelize(word));
}
return join("", modulizedWords);
}
/**
* Escapes a reserved word as defined in the `reservedWords` array. Handle escaping
* those terms here. This logic is only called if a variable matches the reserved words
*
* @return the escaped term
*/
@Override
public String escapeReservedWord(String name) {
return "_" + name; // add an underscore to the name
}
private String sourceFolder() {
ArrayList underscoredWords = new ArrayList();
for (String word : moduleName.split("\\.")) {
underscoredWords.add(underscore(word));
}
return "lib/" + join("/", underscoredWords);
}
/**
* Location to write model files. You can use the modelPackage() as defined when the class is
* instantiated
*/
public String modelFileFolder() {
return outputFolder + "/" + sourceFolder() + "/" + "model";
}
/**
* Location to write api files. You can use the apiPackage() as defined when the class is
* instantiated
*/
@Override
public String apiFileFolder() {
return outputFolder + "/" + sourceFolder() + "/" + "api";
}
@Override
public String toApiName(String name) {
if (name.length() == 0) {
return "Default";
}
return camelize(name);
}
@Override
public String toApiFilename(String name) {
// replace - with _ e.g. created-at => created_at
name = name.replaceAll("-", "_");
// e.g. PetApi.go => pet_api.go
return underscore(name);
}
@Override
public String toModelName(String name) {
// camelize the model name
// phone_number => PhoneNumber
return camelize(toModelFilename(name));
}
@Override
public String toModelFilename(String name) {
if (!StringUtils.isEmpty(modelNamePrefix)) {
name = modelNamePrefix + "_" + name;
}
if (!StringUtils.isEmpty(modelNameSuffix)) {
name = name + "_" + modelNameSuffix;
}
name = sanitizeName(name);
// model name cannot use reserved keyword, e.g. return
if (isReservedWord(name)) {
LOGGER.warn(name + " (reserved word) cannot be used as model name. Renamed to " + ("model_" + name));
name = "model_" + name; // e.g. return => ModelReturn (after camelize)
}
// model name starts with number
if (name.matches("^\\d.*")) {
LOGGER.warn(name + " (model name starts with number) cannot be used as model name. Renamed to " + ("model_" + name));
name = "model_" + name; // e.g. 200Response => Model200Response (after camelize)
}
return underscore(name);
}
@Override
public String toOperationId(String operationId) {
// throw exception if method name is empty (should not occur as an auto-generated method name will be used)
if (StringUtils.isEmpty(operationId)) {
throw new RuntimeException("Empty method name (operationId) not allowed");
}
return camelize(sanitizeName(operationId));
}
/**
* Optional - type declaration. This is a String which is used by the templates to instantiate your
* types. There is typically special handling for different property types
*
* @return a string value used as the `dataType` field for model templates, `returnType` for api templates
*/
@Override
public String getTypeDeclaration(Property p) {
// SubClasses of AbstractProperty
//
// ArrayProperty
// MapProperty
// PasswordProperty
// StringProperty
// EmailProperty
// ByteArrayProperty
// DateProperty
// UUIDProperty
// DateTimeProperty
// ObjectProperty
// AbstractNumericProperty
// BaseIntegerProperty
// IntegerProperty
// LongProperty
// DecimalProperty
// DoubleProperty
// FloatProperty
// BinaryProperty
// BooleanProperty
// RefProperty
// FileProperty
if (p instanceof ArrayProperty) {
ArrayProperty ap = (ArrayProperty) p;
Property inner = ap.getItems();
return "[" + getTypeDeclaration(inner) + "]";
} else if (p instanceof MapProperty) {
MapProperty mp = (MapProperty) p;
Property inner = mp.getAdditionalProperties();
return "%{optional(String.t) => " + getTypeDeclaration(inner) + "}";
} else if (p instanceof PasswordProperty) {
return "String.t";
} else if (p instanceof EmailProperty) {
return "String.t";
} else if (p instanceof ByteArrayProperty) {
return "binary()";
} else if (p instanceof StringProperty) {
return "String.t";
} else if (p instanceof DateProperty) {
return "Date.t";
} else if (p instanceof UUIDProperty) {
return "String.t";
} else if (p instanceof DateTimeProperty) {
return "DateTime.t";
} else if (p instanceof ObjectProperty) {
// How to map it?
return super.getTypeDeclaration(p);
} else if (p instanceof IntegerProperty) {
return "integer()";
} else if (p instanceof LongProperty) {
return "integer()";
} else if (p instanceof BaseIntegerProperty) {
return "integer()";
} else if (p instanceof DoubleProperty) {
return "float()";
} else if (p instanceof FloatProperty) {
return "float()";
} else if (p instanceof DecimalProperty) {
return "float()";
} else if (p instanceof AbstractNumericProperty) {
return "number()";
} else if (p instanceof BinaryProperty) {
return "binary()";
} else if (p instanceof BooleanProperty) {
return "boolean()";
} else if (p instanceof RefProperty) {
// How to map it?
return super.getTypeDeclaration(p);
} else if (p instanceof FileProperty) {
return "String.t";
}
return super.getTypeDeclaration(p);
}
/**
* Optional - swagger type conversion. This is used to map swagger types in a `Property` into
* either language specific types via `typeMapping` or into complex models if there is not a mapping.
*
* @return a string value of the type or complex model for this property
* @see io.swagger.models.properties.Property
*/
@Override
public String getSwaggerType(Property p) {
String swaggerType = super.getSwaggerType(p);
String type = null;
if (typeMapping.containsKey(swaggerType)) {
type = typeMapping.get(swaggerType);
if (languageSpecificPrimitives.contains(type))
return toModelName(type);
} else
type = swaggerType;
return toModelName(type);
}
class ExtendedCodegenOperation extends CodegenOperation {
private List pathTemplateNames = new ArrayList();
private String replacedPathName;
public ExtendedCodegenOperation(CodegenOperation o) {
super();
// Copy all fields of CodegenOperation
this.responseHeaders.addAll(o.responseHeaders);
this.hasAuthMethods = o.hasAuthMethods;
this.hasConsumes = o.hasConsumes;
this.hasProduces = o.hasProduces;
this.hasParams = o.hasParams;
this.hasOptionalParams = o.hasOptionalParams;
this.returnTypeIsPrimitive = o.returnTypeIsPrimitive;
this.returnSimpleType = o.returnSimpleType;
this.subresourceOperation = o.subresourceOperation;
this.isMapContainer = o.isMapContainer;
this.isListContainer = o.isListContainer;
this.isMultipart = o.isMultipart;
this.hasMore = o.hasMore;
this.isResponseBinary = o.isResponseBinary;
this.hasReference = o.hasReference;
this.isRestfulIndex = o.isRestfulIndex;
this.isRestfulShow = o.isRestfulShow;
this.isRestfulCreate = o.isRestfulCreate;
this.isRestfulUpdate = o.isRestfulUpdate;
this.isRestfulDestroy = o.isRestfulDestroy;
this.isRestful = o.isRestful;
this.path = o.path;
this.operationId = o.operationId;
this.returnType = o.returnType;
this.httpMethod = o.httpMethod;
this.returnBaseType = o.returnBaseType;
this.returnContainer = o.returnContainer;
this.summary = o.summary;
this.unescapedNotes = o.unescapedNotes;
this.notes = o.notes;
this.baseName = o.baseName;
this.defaultResponse = o.defaultResponse;
this.discriminator = o.discriminator;
this.consumes = o.consumes;
this.produces = o.produces;
this.bodyParam = o.bodyParam;
this.allParams = o.allParams;
this.bodyParams = o.bodyParams;
this.pathParams = o.pathParams;
this.queryParams = o.queryParams;
this.headerParams = o.headerParams;
this.formParams = o.formParams;
this.authMethods = o.authMethods;
this.tags = o.tags;
this.responses = o.responses;
this.imports = o.imports;
this.examples = o.examples;
this.externalDocs = o.externalDocs;
this.vendorExtensions = o.vendorExtensions;
this.nickname = o.nickname;
this.operationIdLowerCase = o.operationIdLowerCase;
this.operationIdCamelCase = o.operationIdCamelCase;
}
public List getPathTemplateNames() {
return pathTemplateNames;
}
public void setPathTemplateNames(List pathTemplateNames) {
this.pathTemplateNames = pathTemplateNames;
}
public String getReplacedPathName() {
return replacedPathName;
}
public void setReplacedPathName(String replacedPathName) {
this.replacedPathName = replacedPathName;
}
public String typespec() {
StringBuilder sb = new StringBuilder("@spec ");
sb.append(underscore(operationId));
sb.append("(Tesla.Env.client, ");
for (CodegenParameter param : allParams) {
if (param.required) {
buildTypespec(param, sb);
sb.append(", ");
}
}
sb.append("keyword()) :: {:ok, ");
if (returnBaseType == null) {
sb.append("nil");
} else if (returnSimpleType) {
if (!returnTypeIsPrimitive) {
sb.append(moduleName);
sb.append(".Model.");
}
sb.append(returnBaseType);
sb.append(".t");
} else if (returnContainer == null) {
sb.append(returnBaseType);
sb.append(".t");
} else {
if (returnContainer.equals("array")) {
sb.append("list(");
if (!returnTypeIsPrimitive) {
sb.append(moduleName);
sb.append(".Model.");
}
sb.append(returnBaseType);
sb.append(".t)");
} else if (returnContainer.equals("map")) {
sb.append("map()");
}
}
sb.append("} | {:error, Tesla.Env.t}");
return sb.toString();
}
private void buildTypespec(CodegenParameter param, StringBuilder sb) {
if (param.dataType == null) {
sb.append("nil");
} else if (param.isListContainer) {
// list()
sb.append("list(");
if (param.isBodyParam) {
buildTypespec(param.items.items, sb);
} else {
buildTypespec(param.items, sb);
}
sb.append(")");
} else if (param.isMapContainer) {
// %{optional(String.t) => }
sb.append("%{optional(String.t) => ");
buildTypespec(param.items, sb);
sb.append("}");
} else if (param.isPrimitiveType) {
// like `integer()`, `String.t`
sb.append(param.dataType);
} else if (param.isFile) {
sb.append("String.t");
} else {
// .Model..t
sb.append(moduleName);
sb.append(".Model.");
sb.append(param.dataType);
sb.append(".t");
}
}
private void buildTypespec(CodegenProperty property, StringBuilder sb) {
if (property.isListContainer) {
sb.append("list(");
buildTypespec(property.items, sb);
sb.append(")");
} else if (property.isMapContainer) {
sb.append("%{optional(String.t) => ");
buildTypespec(property.items, sb);
sb.append("}");
} else if (property.isPrimitiveType) {
sb.append(property.baseType);
sb.append(".t");
} else {
sb.append(moduleName);
sb.append(".Model.");
sb.append(property.baseType);
sb.append(".t");
}
}
public String decodedStruct() {
// Let Poison decode the entire response into a generic blob
if (isMapContainer) {
return "";
}
// Primitive return type, don't even try to decode
if (returnBaseType == null || (returnSimpleType && returnTypeIsPrimitive)) {
return "false";
}
StringBuilder sb = new StringBuilder();
if (isListContainer) {
sb.append("[");
}
sb.append("%");
sb.append(moduleName);
sb.append(".Model.");
sb.append(returnBaseType);
sb.append("{}");
if (isListContainer) {
sb.append("]");
}
return sb.toString();
}
}
class ExtendedCodegenModel extends CodegenModel {
public boolean hasImports;
public ExtendedCodegenModel(CodegenModel cm) {
super();
// Copy all fields of CodegenModel
this.parent = cm.parent;
this.parentSchema = cm.parentSchema;
this.parentModel = cm.parentModel;
this.interfaceModels = cm.interfaceModels;
this.children = cm.children;
this.name = cm.name;
this.classname = cm.classname;
this.title = cm.title;
this.description = cm.description;
this.classVarName = cm.classVarName;
this.modelJson = cm.modelJson;
this.dataType = cm.dataType;
this.xmlPrefix = cm.xmlPrefix;
this.xmlNamespace = cm.xmlNamespace;
this.xmlName = cm.xmlName;
this.classFilename = cm.classFilename;
this.unescapedDescription = cm.unescapedDescription;
this.discriminator = cm.discriminator;
this.defaultValue = cm.defaultValue;
this.arrayModelType = cm.arrayModelType;
this.isAlias = cm.isAlias;
this.vars = cm.vars;
this.requiredVars = cm.requiredVars;
this.optionalVars = cm.optionalVars;
this.readOnlyVars = cm.readOnlyVars;
this.readWriteVars = cm.readWriteVars;
this.allVars = cm.allVars;
this.parentVars = cm.parentVars;
this.allowableValues = cm.allowableValues;
this.mandatory = cm.mandatory;
this.allMandatory = cm.allMandatory;
this.imports = cm.imports;
this.hasVars = cm.hasVars;
this.emptyVars = cm.emptyVars;
this.hasMoreModels = cm.hasMoreModels;
this.hasEnums = cm.hasEnums;
this.isEnum = cm.isEnum;
this.hasRequired = cm.hasRequired;
this.hasOptional = cm.hasOptional;
this.isArrayModel = cm.isArrayModel;
this.hasChildren = cm.hasChildren;
this.hasOnlyReadOnly = cm.hasOnlyReadOnly;
this.externalDocs = cm.externalDocs;
this.vendorExtensions = cm.vendorExtensions;
this.additionalPropertiesType = cm.additionalPropertiesType;
this.hasImports = !this.imports.isEmpty();
}
public boolean hasComplexVars() {
for (CodegenProperty p : vars) {
if (!p.isPrimitiveType) {
return true;
}
}
return false;
}
}
@Override
public String escapeQuotationMark(String input) {
return input.replace("\"", "");
}
@Override
public String escapeUnsafeCharacters(String input) {
// no need to escape as Elixir does not support multi-line comments
return input;
}
public void setModuleName(String moduleName) {
this.moduleName = moduleName;
}
}