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package io.swagger.codegen.languages;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.SerializerProvider;
import com.fasterxml.jackson.databind.module.SimpleModule;
import com.google.common.collect.ArrayListMultimap;
import com.google.common.collect.Lists;
import com.google.common.collect.Multimap;
import io.swagger.codegen.*;
import io.swagger.models.*;
import io.swagger.util.Yaml;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.File;
import java.io.IOException;
import java.math.BigDecimal;
import java.util.*;
import java.util.Map.Entry;
import org.apache.commons.lang3.StringUtils;
public class GoServerCodegen extends DefaultCodegen implements CodegenConfig {
private static final Logger LOGGER = LoggerFactory.getLogger(GoServerCodegen.class);
protected String apiVersion = "1.0.0";
protected int serverPort = 8080;
protected String projectName = "swagger-server";
protected String apiPath = "go";
public GoServerCodegen() {
super();
// set the output folder here
outputFolder = "generated-code/go";
/*
* 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.clear();
/*
* 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(
"controller.mustache", // the template to use
".go"); // 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.
*/
embeddedTemplateDir = templateDir = "go-server";
/*
* Reserved words. Override this with reserved words specific to your language
*/
setReservedWordsLowerCase(
Arrays.asList(
"break", "default", "func", "interface", "select",
"case", "defer", "go", "map", "struct",
"chan", "else", "goto", "package", "switch",
"const", "fallthrough", "if", "range", "type",
"continue", "for", "import", "return", "var", "error", "ApiResponse",
"nil")
// Added "error" as it's used so frequently that it may as well be a keyword
);
defaultIncludes = new HashSet(
Arrays.asList(
"map",
"array")
);
languageSpecificPrimitives = new HashSet(
Arrays.asList(
"string",
"bool",
"uint",
"uint32",
"uint64",
"int",
"int32",
"int64",
"float32",
"float64",
"complex64",
"complex128",
"rune",
"byte")
);
instantiationTypes.clear();
/*instantiationTypes.put("array", "GoArray");
instantiationTypes.put("map", "GoMap");*/
typeMapping.clear();
typeMapping.put("integer", "int32");
typeMapping.put("long", "int64");
typeMapping.put("number", "float32");
typeMapping.put("float", "float32");
typeMapping.put("double", "float64");
typeMapping.put("boolean", "bool");
typeMapping.put("string", "string");
typeMapping.put("date", "time.Time");
typeMapping.put("DateTime", "time.Time");
typeMapping.put("password", "string");
typeMapping.put("File", "*os.File");
typeMapping.put("file", "*os.File");
// map binary to string as a workaround
// the correct solution is to use []byte
typeMapping.put("binary", "string");
typeMapping.put("ByteArray", "string");
typeMapping.put("UUID", "string");
importMapping = new HashMap();
importMapping.put("time.Time", "time");
importMapping.put("*os.File", "os");
importMapping.put("os", "io/ioutil");
cliOptions.clear();
cliOptions.add(new CliOption(CodegenConstants.PACKAGE_NAME, "Go package name (convention: lowercase).")
.defaultValue("swagger"));
cliOptions.add(new CliOption(CodegenConstants.HIDE_GENERATION_TIMESTAMP, "hides the timestamp when files were generated")
.defaultValue(Boolean.TRUE.toString()));
/*
* Additional Properties. These values can be passed to the templates and
* are available in models, apis, and supporting files
*/
additionalProperties.put("apiVersion", apiVersion);
additionalProperties.put("serverPort", serverPort);
additionalProperties.put("apiPath", apiPath);
/*
* 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("swagger.mustache",
"api",
"swagger.yaml")
);
supportingFiles.add(new SupportingFile("main.mustache", "", "main.go"));
supportingFiles.add(new SupportingFile("routers.mustache", apiPath, "routers.go"));
supportingFiles.add(new SupportingFile("logger.mustache", apiPath, "logger.go"));
supportingFiles.add(new SupportingFile("app.mustache", apiPath, "app.yaml"));
writeOptional(outputFolder, new SupportingFile("README.mustache", apiPath, "README.md"));
}
@Override
public String apiPackage() {
return apiPath;
}
/**
* Configures the type of generator.
*
* @return the CodegenType for this generator
* @see io.swagger.codegen.CodegenType
*/
@Override
public CodegenType getTag() {
return CodegenType.SERVER;
}
/**
* 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
*/
@Override
public String getName() {
return "go-server";
}
/**
* Returns human-friendly help for the generator. Provide the consumer with help
* tips, parameters here
*
* @return A string value for the help message
*/
@Override
public String getHelp() {
return "Generates a Go server library using the swagger-tools project. By default, " +
"it will also generate service classes--which you can disable with the `-Dnoservice` environment variable.";
}
@Override
public String toApiName(String name) {
if (name.length() == 0) {
return "DefaultController";
}
return initialCaps(name);
}
/**
* 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 reseved words
*
* @return the escaped term
*/
@Override
public String escapeReservedWord(String name) {
if(this.reservedWordsMappings().containsKey(name)) {
return this.reservedWordsMappings().get(name);
}
return "_" + name; // add an underscore to the name
}
/**
* Location to write api files. You can use the apiPackage() as defined when the class is
* instantiated
*/
@Override
public String apiFileFolder() {
return outputFolder + File.separator + apiPackage().replace('.', File.separatorChar);
}
@Override
public String toModelName(String name) {
// camelize the model name
// phone_number => PhoneNumber
return camelize(toModelFilename(name));
}
@Override
public String toOperationId(String operationId) {
// method name cannot use reserved keyword, e.g. return
if (isReservedWord(operationId)) {
LOGGER.warn(operationId + " (reserved word) cannot be used as method name. Renamed to " + camelize(sanitizeName("call_" + operationId)));
operationId = "call_" + operationId;
}
return camelize(operationId);
}
@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 " + camelize("model_" + name));
name = "model_" + name; // e.g. return => ModelReturn (after camelize)
}
return underscore(name);
}
@Override
public String toApiFilename(String name) {
// replace - with _ e.g. created-at => created_at
name = name.replaceAll("-", "_"); // FIXME: a parameter should not be assigned. Also declare the methods parameters as 'final'.
// e.g. PetApi.go => pet_api.go
return underscore(name);
}
@Override
public String escapeQuotationMark(String input) {
// remove " to avoid code injection
return input.replace("\"", "");
}
@Override
public String escapeUnsafeCharacters(String input) {
return input.replace("*/", "*_/").replace("/*", "/_*");
}
}
