[Go] Fix operation files clobbering model files. [2.4.0] (#7337)

* Prevent operation files clobbering model files.

* Update Tests

modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/AbstractGoCodegen.java

@@ -152,11 +152,15 @@ public abstract class AbstractGoCodegen extends DefaultCodegen implements Codege
     public String toModelName(String name) {
         // camelize the model name
         // phone_number => PhoneNumber
-        return camelize(toModelFilename(name));
+        return camelize(toModel(name));
     }
 
     @Override
     public String toModelFilename(String name) {
+      return toModel("model_" + name);
+    }
+
+    public String toModel(String name) {
         if (!StringUtils.isEmpty(modelNamePrefix)) {
             name = modelNamePrefix + "_" + name;
         }
@@ -188,7 +192,7 @@ public abstract class AbstractGoCodegen extends DefaultCodegen implements Codege
         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) + "_api";
+        return "api_" + underscore(name);
     }
 
     /**

modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/GoClientCodegen.java

@@ -92,8 +92,8 @@ public class GoClientCodegen extends AbstractGoCodegen {
         supportingFiles.add(new SupportingFile("git_push.sh.mustache", "", "git_push.sh"));
         supportingFiles.add(new SupportingFile("gitignore.mustache", "", ".gitignore"));
         supportingFiles.add(new SupportingFile("configuration.mustache", "", "configuration.go"));
-        supportingFiles.add(new SupportingFile("api_client.mustache", "", "api_client.go"));
-        supportingFiles.add(new SupportingFile("api_response.mustache", "", "api_response.go"));
+        supportingFiles.add(new SupportingFile("client.mustache", "", "client.go"));
+        supportingFiles.add(new SupportingFile("response.mustache", "", "response.go"));
         supportingFiles.add(new SupportingFile(".travis.yml", "", ".travis.yml"));
     }
 

samples/client/petstore/go/go-petstore/.swagger-codegen/VERSION

@@ -1 +1 @@
-2.3.0-SNAPSHOT
+2.4.0-SNAPSHOT

samples/client/petstore/go/go-petstore/api/swagger.yaml

@@ -107,11 +107,11 @@ paths:
         type: "array"
         items:
           type: "string"
-          default: "available"
           enum:
           - "available"
           - "pending"
           - "sold"
+          default: "available"
         collectionFormat: "csv"
         x-exportParamName: "Status"
       responses:
@@ -634,10 +634,10 @@ paths:
         type: "array"
         items:
           type: "string"
-          default: "$"
           enum:
           - ">"
           - "$"
+          default: "$"
         x-exportParamName: "EnumFormStringArray"
       - name: "enum_form_string"
         in: "formData"
@@ -657,10 +657,10 @@ paths:
         type: "array"
         items:
           type: "string"
-          default: "$"
           enum:
           - ">"
           - "$"
+          default: "$"
         x-exportParamName: "EnumHeaderStringArray"
       - name: "enum_header_string"
         in: "header"
@@ -680,10 +680,10 @@ paths:
         type: "array"
         items:
           type: "string"
-          default: "$"
           enum:
           - ">"
           - "$"
+          default: "$"
         x-exportParamName: "EnumQueryStringArray"
       - name: "enum_query_string"
         in: "query"

samples/client/petstore/go/go-petstore/api_client.go

@@ -1,441 +0,0 @@
-/*
- * Swagger Petstore
- *
- * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
- *
- * API version: 1.0.0
- * Contact: apiteam@swagger.io
- * Generated by: Swagger Codegen (https://github.com/swagger-api/swagger-codegen.git)
- */
-
-package petstore
-
-import (
-	"bytes"
-	"encoding/json"
-	"encoding/xml"
-	"errors"
-	"fmt"
-	"io"
-	"mime/multipart"
-	"net/http"
-	"net/url"
-	"os"
-	"path/filepath"
-	"reflect"
-	"regexp"
-	"strconv"
-	"strings"
-	"time"
-	"unicode/utf8"
-
-	"golang.org/x/net/context"
-	"golang.org/x/oauth2"
-)
-
-var (
-	jsonCheck = regexp.MustCompile("(?i:[application|text]/json)")
-	xmlCheck  = regexp.MustCompile("(?i:[application|text]/xml)")
-)
-
-// APIClient manages communication with the Swagger Petstore API v1.0.0
-// In most cases there should be only one, shared, APIClient.
-type APIClient struct {
-	cfg    *Configuration
-	common service // Reuse a single struct instead of allocating one for each service on the heap.
-
-	// API Services
-
-	AnotherFakeApi *AnotherFakeApiService
-
-	FakeApi *FakeApiService
-
-	FakeClassnameTags123Api *FakeClassnameTags123ApiService
-
-	PetApi *PetApiService
-
-	StoreApi *StoreApiService
-
-	UserApi *UserApiService
-}
-
-type service struct {
-	client *APIClient
-}
-
-// NewAPIClient creates a new API client. Requires a userAgent string describing your application.
-// optionally a custom http.Client to allow for advanced features such as caching.
-func NewAPIClient(cfg *Configuration) *APIClient {
-	if cfg.HTTPClient == nil {
-		cfg.HTTPClient = http.DefaultClient
-	}
-
-	c := &APIClient{}
-	c.cfg = cfg
-	c.common.client = c
-
-	// API Services
-	c.AnotherFakeApi = (*AnotherFakeApiService)(&c.common)
-	c.FakeApi = (*FakeApiService)(&c.common)
-	c.FakeClassnameTags123Api = (*FakeClassnameTags123ApiService)(&c.common)
-	c.PetApi = (*PetApiService)(&c.common)
-	c.StoreApi = (*StoreApiService)(&c.common)
-	c.UserApi = (*UserApiService)(&c.common)
-
-	return c
-}
-
-func atoi(in string) (int, error) {
-	return strconv.Atoi(in)
-}
-
-// selectHeaderContentType select a content type from the available list.
-func selectHeaderContentType(contentTypes []string) string {
-	if len(contentTypes) == 0 {
-		return ""
-	}
-	if contains(contentTypes, "application/json") {
-		return "application/json"
-	}
-	return contentTypes[0] // use the first content type specified in 'consumes'
-}
-
-// selectHeaderAccept join all accept types and return
-func selectHeaderAccept(accepts []string) string {
-	if len(accepts) == 0 {
-		return ""
-	}
-
-	if contains(accepts, "application/json") {
-		return "application/json"
-	}
-
-	return strings.Join(accepts, ",")
-}
-
-// contains is a case insenstive match, finding needle in a haystack
-func contains(haystack []string, needle string) bool {
-	for _, a := range haystack {
-		if strings.ToLower(a) == strings.ToLower(needle) {
-			return true
-		}
-	}
-	return false
-}
-
-// Verify optional parameters are of the correct type.
-func typeCheckParameter(obj interface{}, expected string, name string) error {
-	// Make sure there is an object.
-	if obj == nil {
-		return nil
-	}
-
-	// Check the type is as expected.
-	if reflect.TypeOf(obj).String() != expected {
-		return fmt.Errorf("Expected %s to be of type %s but received %s.", name, expected, reflect.TypeOf(obj).String())
-	}
-	return nil
-}
-
-// parameterToString convert interface{} parameters to string, using a delimiter if format is provided.
-func parameterToString(obj interface{}, collectionFormat string) string {
-	var delimiter string
-
-	switch collectionFormat {
-	case "pipes":
-		delimiter = "|"
-	case "ssv":
-		delimiter = " "
-	case "tsv":
-		delimiter = "\t"
-	case "csv":
-		delimiter = ","
-	}
-
-	if reflect.TypeOf(obj).Kind() == reflect.Slice {
-		return strings.Trim(strings.Replace(fmt.Sprint(obj), " ", delimiter, -1), "[]")
-	}
-
-	return fmt.Sprintf("%v", obj)
-}
-
-// callAPI do the request.
-func (c *APIClient) callAPI(request *http.Request) (*http.Response, error) {
-	return c.cfg.HTTPClient.Do(request)
-}
-
-// Change base path to allow switching to mocks
-func (c *APIClient) ChangeBasePath(path string) {
-	c.cfg.BasePath = path
-}
-
-// prepareRequest build the request
-func (c *APIClient) prepareRequest(
-	ctx context.Context,
-	path string, method string,
-	postBody interface{},
-	headerParams map[string]string,
-	queryParams url.Values,
-	formParams url.Values,
-	fileName string,
-	fileBytes []byte) (localVarRequest *http.Request, err error) {
-
-	var body *bytes.Buffer
-
-	// Detect postBody type and post.
-	if postBody != nil {
-		contentType := headerParams["Content-Type"]
-		if contentType == "" {
-			contentType = detectContentType(postBody)
-			headerParams["Content-Type"] = contentType
-		}
-
-		body, err = setBody(postBody, contentType)
-		if err != nil {
-			return nil, err
-		}
-	}
-
-	// add form parameters and file if available.
-	if len(formParams) > 0 || (len(fileBytes) > 0 && fileName != "") {
-		if body != nil {
-			return nil, errors.New("Cannot specify postBody and multipart form at the same time.")
-		}
-		body = &bytes.Buffer{}
-		w := multipart.NewWriter(body)
-
-		for k, v := range formParams {
-			for _, iv := range v {
-				if strings.HasPrefix(k, "@") { // file
-					err = addFile(w, k[1:], iv)
-					if err != nil {
-						return nil, err
-					}
-				} else { // form value
-					w.WriteField(k, iv)
-				}
-			}
-		}
-		if len(fileBytes) > 0 && fileName != "" {
-			w.Boundary()
-			//_, fileNm := filepath.Split(fileName)
-			part, err := w.CreateFormFile("file", filepath.Base(fileName))
-			if err != nil {
-				return nil, err
-			}
-			_, err = part.Write(fileBytes)
-			if err != nil {
-				return nil, err
-			}
-			// Set the Boundary in the Content-Type
-			headerParams["Content-Type"] = w.FormDataContentType()
-		}
-
-		// Set Content-Length
-		headerParams["Content-Length"] = fmt.Sprintf("%d", body.Len())
-		w.Close()
-	}
-
-	// Setup path and query parameters
-	url, err := url.Parse(path)
-	if err != nil {
-		return nil, err
-	}
-
-	// Adding Query Param
-	query := url.Query()
-	for k, v := range queryParams {
-		for _, iv := range v {
-			query.Add(k, iv)
-		}
-	}
-
-	// Encode the parameters.
-	url.RawQuery = query.Encode()
-
-	// Generate a new request
-	if body != nil {
-		localVarRequest, err = http.NewRequest(method, url.String(), body)
-	} else {
-		localVarRequest, err = http.NewRequest(method, url.String(), nil)
-	}
-	if err != nil {
-		return nil, err
-	}
-
-	// add header parameters, if any
-	if len(headerParams) > 0 {
-		headers := http.Header{}
-		for h, v := range headerParams {
-			headers.Set(h, v)
-		}
-		localVarRequest.Header = headers
-	}
-
-	// Override request host, if applicable
-	if c.cfg.Host != "" {
-		localVarRequest.Host = c.cfg.Host
-	}
-
-	// Add the user agent to the request.
-	localVarRequest.Header.Add("User-Agent", c.cfg.UserAgent)
-
-	if ctx != nil {
-		// add context to the request
-		localVarRequest = localVarRequest.WithContext(ctx)
-
-		// Walk through any authentication.
-
-		// OAuth2 authentication
-		if tok, ok := ctx.Value(ContextOAuth2).(oauth2.TokenSource); ok {
-			// We were able to grab an oauth2 token from the context
-			var latestToken *oauth2.Token
-			if latestToken, err = tok.Token(); err != nil {
-				return nil, err
-			}
-
-			latestToken.SetAuthHeader(localVarRequest)
-		}
-
-		// Basic HTTP Authentication
-		if auth, ok := ctx.Value(ContextBasicAuth).(BasicAuth); ok {
-			localVarRequest.SetBasicAuth(auth.UserName, auth.Password)
-		}
-
-		// AccessToken Authentication
-		if auth, ok := ctx.Value(ContextAccessToken).(string); ok {
-			localVarRequest.Header.Add("Authorization", "Bearer "+auth)
-		}
-	}
-
-	for header, value := range c.cfg.DefaultHeader {
-		localVarRequest.Header.Add(header, value)
-	}
-
-	return localVarRequest, nil
-}
-
-// Add a file to the multipart request
-func addFile(w *multipart.Writer, fieldName, path string) error {
-	file, err := os.Open(path)
-	if err != nil {
-		return err
-	}
-	defer file.Close()
-
-	part, err := w.CreateFormFile(fieldName, filepath.Base(path))
-	if err != nil {
-		return err
-	}
-	_, err = io.Copy(part, file)
-
-	return err
-}
-
-// Prevent trying to import "fmt"
-func reportError(format string, a ...interface{}) error {
-	return fmt.Errorf(format, a...)
-}
-
-// Set request body from an interface{}
-func setBody(body interface{}, contentType string) (bodyBuf *bytes.Buffer, err error) {
-	if bodyBuf == nil {
-		bodyBuf = &bytes.Buffer{}
-	}
-
-	if reader, ok := body.(io.Reader); ok {
-		_, err = bodyBuf.ReadFrom(reader)
-	} else if b, ok := body.([]byte); ok {
-		_, err = bodyBuf.Write(b)
-	} else if s, ok := body.(string); ok {
-		_, err = bodyBuf.WriteString(s)
-	} else if jsonCheck.MatchString(contentType) {
-		err = json.NewEncoder(bodyBuf).Encode(body)
-	} else if xmlCheck.MatchString(contentType) {
-		xml.NewEncoder(bodyBuf).Encode(body)
-	}
-
-	if err != nil {
-		return nil, err
-	}
-
-	if bodyBuf.Len() == 0 {
-		err = fmt.Errorf("Invalid body type %s\n", contentType)
-		return nil, err
-	}
-	return bodyBuf, nil
-}
-
-// detectContentType method is used to figure out `Request.Body` content type for request header
-func detectContentType(body interface{}) string {
-	contentType := "text/plain; charset=utf-8"
-	kind := reflect.TypeOf(body).Kind()
-
-	switch kind {
-	case reflect.Struct, reflect.Map, reflect.Ptr:
-		contentType = "application/json; charset=utf-8"
-	case reflect.String:
-		contentType = "text/plain; charset=utf-8"
-	default:
-		if b, ok := body.([]byte); ok {
-			contentType = http.DetectContentType(b)
-		} else if kind == reflect.Slice {
-			contentType = "application/json; charset=utf-8"
-		}
-	}
-
-	return contentType
-}
-
-// Ripped from https://github.com/gregjones/httpcache/blob/master/httpcache.go
-type cacheControl map[string]string
-
-func parseCacheControl(headers http.Header) cacheControl {
-	cc := cacheControl{}
-	ccHeader := headers.Get("Cache-Control")
-	for _, part := range strings.Split(ccHeader, ",") {
-		part = strings.Trim(part, " ")
-		if part == "" {
-			continue
-		}
-		if strings.ContainsRune(part, '=') {
-			keyval := strings.Split(part, "=")
-			cc[strings.Trim(keyval[0], " ")] = strings.Trim(keyval[1], ",")
-		} else {
-			cc[part] = ""
-		}
-	}
-	return cc
-}
-
-// CacheExpires helper function to determine remaining time before repeating a request.
-func CacheExpires(r *http.Response) time.Time {
-	// Figure out when the cache expires.
-	var expires time.Time
-	now, err := time.Parse(time.RFC1123, r.Header.Get("date"))
-	if err != nil {
-		return time.Now()
-	}
-	respCacheControl := parseCacheControl(r.Header)
-
-	if maxAge, ok := respCacheControl["max-age"]; ok {
-		lifetime, err := time.ParseDuration(maxAge + "s")
-		if err != nil {
-			expires = now
-		}
-		expires = now.Add(lifetime)
-	} else {
-		expiresHeader := r.Header.Get("Expires")
-		if expiresHeader != "" {
-			expires, err = time.Parse(time.RFC1123, expiresHeader)
-			if err != nil {
-				expires = now
-			}
-		}
-	}
-	return expires
-}
-
-func strlen(s string) int {
-	return utf8.RuneCountInString(s)
-}

samples/client/petstore/go/go-petstore/client.go

@@ -10,6 +10,432 @@
 
 package petstore
 
-type Client struct {
-	Client string `json:"client,omitempty"`
+import (
+	"bytes"
+	"encoding/json"
+	"encoding/xml"
+	"errors"
+	"fmt"
+	"io"
+	"mime/multipart"
+	"net/http"
+	"net/url"
+	"os"
+	"path/filepath"
+	"reflect"
+	"regexp"
+	"strconv"
+	"strings"
+	"time"
+	"unicode/utf8"
+
+	"golang.org/x/net/context"
+	"golang.org/x/oauth2"
+)
+
+var (
+	jsonCheck = regexp.MustCompile("(?i:[application|text]/json)")
+	xmlCheck  = regexp.MustCompile("(?i:[application|text]/xml)")
+)
+
+// APIClient manages communication with the Swagger Petstore API v1.0.0
+// In most cases there should be only one, shared, APIClient.
+type APIClient struct {
+	cfg    *Configuration
+	common service // Reuse a single struct instead of allocating one for each service on the heap.
+
+	// API Services
+
+	AnotherFakeApi *AnotherFakeApiService
+
+	FakeApi *FakeApiService
+
+	FakeClassnameTags123Api *FakeClassnameTags123ApiService
+
+	PetApi *PetApiService
+
+	StoreApi *StoreApiService
+
+	UserApi *UserApiService
+}
+
+type service struct {
+	client *APIClient
+}
+
+// NewAPIClient creates a new API client. Requires a userAgent string describing your application.
+// optionally a custom http.Client to allow for advanced features such as caching.
+func NewAPIClient(cfg *Configuration) *APIClient {
+	if cfg.HTTPClient == nil {
+		cfg.HTTPClient = http.DefaultClient
+	}
+
+	c := &APIClient{}
+	c.cfg = cfg
+	c.common.client = c
+
+	// API Services
+	c.AnotherFakeApi = (*AnotherFakeApiService)(&c.common)
+	c.FakeApi = (*FakeApiService)(&c.common)
+	c.FakeClassnameTags123Api = (*FakeClassnameTags123ApiService)(&c.common)
+	c.PetApi = (*PetApiService)(&c.common)
+	c.StoreApi = (*StoreApiService)(&c.common)
+	c.UserApi = (*UserApiService)(&c.common)
+
+	return c
+}
+
+func atoi(in string) (int, error) {
+	return strconv.Atoi(in)
+}
+
+// selectHeaderContentType select a content type from the available list.
+func selectHeaderContentType(contentTypes []string) string {
+	if len(contentTypes) == 0 {
+		return ""
+	}
+	if contains(contentTypes, "application/json") {
+		return "application/json"
+	}
+	return contentTypes[0] // use the first content type specified in 'consumes'
+}
+
+// selectHeaderAccept join all accept types and return
+func selectHeaderAccept(accepts []string) string {
+	if len(accepts) == 0 {
+		return ""
+	}
+
+	if contains(accepts, "application/json") {
+		return "application/json"
+	}
+
+	return strings.Join(accepts, ",")
+}
+
+// contains is a case insenstive match, finding needle in a haystack
+func contains(haystack []string, needle string) bool {
+	for _, a := range haystack {
+		if strings.ToLower(a) == strings.ToLower(needle) {
+			return true
+		}
+	}
+	return false
+}
+
+// Verify optional parameters are of the correct type.
+func typeCheckParameter(obj interface{}, expected string, name string) error {
+	// Make sure there is an object.
+	if obj == nil {
+		return nil
+	}
+
+	// Check the type is as expected.
+	if reflect.TypeOf(obj).String() != expected {
+		return fmt.Errorf("Expected %s to be of type %s but received %s.", name, expected, reflect.TypeOf(obj).String())
+	}
+	return nil
+}
+
+// parameterToString convert interface{} parameters to string, using a delimiter if format is provided.
+func parameterToString(obj interface{}, collectionFormat string) string {
+	var delimiter string
+
+	switch collectionFormat {
+	case "pipes":
+		delimiter = "|"
+	case "ssv":
+		delimiter = " "
+	case "tsv":
+		delimiter = "\t"
+	case "csv":
+		delimiter = ","
+	}
+
+	if reflect.TypeOf(obj).Kind() == reflect.Slice {
+		return strings.Trim(strings.Replace(fmt.Sprint(obj), " ", delimiter, -1), "[]")
+	}
+
+	return fmt.Sprintf("%v", obj)
+}
+
+// callAPI do the request.
+func (c *APIClient) callAPI(request *http.Request) (*http.Response, error) {
+	return c.cfg.HTTPClient.Do(request)
+}
+
+// Change base path to allow switching to mocks
+func (c *APIClient) ChangeBasePath(path string) {
+	c.cfg.BasePath = path
+}
+
+// prepareRequest build the request
+func (c *APIClient) prepareRequest(
+	ctx context.Context,
+	path string, method string,
+	postBody interface{},
+	headerParams map[string]string,
+	queryParams url.Values,
+	formParams url.Values,
+	fileName string,
+	fileBytes []byte) (localVarRequest *http.Request, err error) {
+
+	var body *bytes.Buffer
+
+	// Detect postBody type and post.
+	if postBody != nil {
+		contentType := headerParams["Content-Type"]
+		if contentType == "" {
+			contentType = detectContentType(postBody)
+			headerParams["Content-Type"] = contentType
+		}
+
+		body, err = setBody(postBody, contentType)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	// add form parameters and file if available.
+	if len(formParams) > 0 || (len(fileBytes) > 0 && fileName != "") {
+		if body != nil {
+			return nil, errors.New("Cannot specify postBody and multipart form at the same time.")
+		}
+		body = &bytes.Buffer{}
+		w := multipart.NewWriter(body)
+
+		for k, v := range formParams {
+			for _, iv := range v {
+				if strings.HasPrefix(k, "@") { // file
+					err = addFile(w, k[1:], iv)
+					if err != nil {
+						return nil, err
+					}
+				} else { // form value
+					w.WriteField(k, iv)
+				}
+			}
+		}
+		if len(fileBytes) > 0 && fileName != "" {
+			w.Boundary()
+			//_, fileNm := filepath.Split(fileName)
+			part, err := w.CreateFormFile("file", filepath.Base(fileName))
+			if err != nil {
+				return nil, err
+			}
+			_, err = part.Write(fileBytes)
+			if err != nil {
+				return nil, err
+			}
+			// Set the Boundary in the Content-Type
+			headerParams["Content-Type"] = w.FormDataContentType()
+		}
+
+		// Set Content-Length
+		headerParams["Content-Length"] = fmt.Sprintf("%d", body.Len())
+		w.Close()
+	}
+
+	// Setup path and query parameters
+	url, err := url.Parse(path)
+	if err != nil {
+		return nil, err
+	}
+
+	// Adding Query Param
+	query := url.Query()
+	for k, v := range queryParams {
+		for _, iv := range v {
+			query.Add(k, iv)
+		}
+	}
+
+	// Encode the parameters.
+	url.RawQuery = query.Encode()
+
+	// Generate a new request
+	if body != nil {
+		localVarRequest, err = http.NewRequest(method, url.String(), body)
+	} else {
+		localVarRequest, err = http.NewRequest(method, url.String(), nil)
+	}
+	if err != nil {
+		return nil, err
+	}
+
+	// add header parameters, if any
+	if len(headerParams) > 0 {
+		headers := http.Header{}
+		for h, v := range headerParams {
+			headers.Set(h, v)
+		}
+		localVarRequest.Header = headers
+	}
+
+	// Override request host, if applicable
+	if c.cfg.Host != "" {
+		localVarRequest.Host = c.cfg.Host
+	}
+
+	// Add the user agent to the request.
+	localVarRequest.Header.Add("User-Agent", c.cfg.UserAgent)
+
+	if ctx != nil {
+		// add context to the request
+		localVarRequest = localVarRequest.WithContext(ctx)
+
+		// Walk through any authentication.
+
+		// OAuth2 authentication
+		if tok, ok := ctx.Value(ContextOAuth2).(oauth2.TokenSource); ok {
+			// We were able to grab an oauth2 token from the context
+			var latestToken *oauth2.Token
+			if latestToken, err = tok.Token(); err != nil {
+				return nil, err
+			}
+
+			latestToken.SetAuthHeader(localVarRequest)
+		}
+
+		// Basic HTTP Authentication
+		if auth, ok := ctx.Value(ContextBasicAuth).(BasicAuth); ok {
+			localVarRequest.SetBasicAuth(auth.UserName, auth.Password)
+		}
+
+		// AccessToken Authentication
+		if auth, ok := ctx.Value(ContextAccessToken).(string); ok {
+			localVarRequest.Header.Add("Authorization", "Bearer "+auth)
+		}
+	}
+
+	for header, value := range c.cfg.DefaultHeader {
+		localVarRequest.Header.Add(header, value)
+	}
+
+	return localVarRequest, nil
+}
+
+// Add a file to the multipart request
+func addFile(w *multipart.Writer, fieldName, path string) error {
+	file, err := os.Open(path)
+	if err != nil {
+		return err
+	}
+	defer file.Close()
+
+	part, err := w.CreateFormFile(fieldName, filepath.Base(path))
+	if err != nil {
+		return err
+	}
+	_, err = io.Copy(part, file)
+
+	return err
+}
+
+// Prevent trying to import "fmt"
+func reportError(format string, a ...interface{}) error {
+	return fmt.Errorf(format, a...)
+}
+
+// Set request body from an interface{}
+func setBody(body interface{}, contentType string) (bodyBuf *bytes.Buffer, err error) {
+	if bodyBuf == nil {
+		bodyBuf = &bytes.Buffer{}
+	}
+
+	if reader, ok := body.(io.Reader); ok {
+		_, err = bodyBuf.ReadFrom(reader)
+	} else if b, ok := body.([]byte); ok {
+		_, err = bodyBuf.Write(b)
+	} else if s, ok := body.(string); ok {
+		_, err = bodyBuf.WriteString(s)
+	} else if jsonCheck.MatchString(contentType) {
+		err = json.NewEncoder(bodyBuf).Encode(body)
+	} else if xmlCheck.MatchString(contentType) {
+		xml.NewEncoder(bodyBuf).Encode(body)
+	}
+
+	if err != nil {
+		return nil, err
+	}
+
+	if bodyBuf.Len() == 0 {
+		err = fmt.Errorf("Invalid body type %s\n", contentType)
+		return nil, err
+	}
+	return bodyBuf, nil
+}
+
+// detectContentType method is used to figure out `Request.Body` content type for request header
+func detectContentType(body interface{}) string {
+	contentType := "text/plain; charset=utf-8"
+	kind := reflect.TypeOf(body).Kind()
+
+	switch kind {
+	case reflect.Struct, reflect.Map, reflect.Ptr:
+		contentType = "application/json; charset=utf-8"
+	case reflect.String:
+		contentType = "text/plain; charset=utf-8"
+	default:
+		if b, ok := body.([]byte); ok {
+			contentType = http.DetectContentType(b)
+		} else if kind == reflect.Slice {
+			contentType = "application/json; charset=utf-8"
+		}
+	}
+
+	return contentType
+}
+
+// Ripped from https://github.com/gregjones/httpcache/blob/master/httpcache.go
+type cacheControl map[string]string
+
+func parseCacheControl(headers http.Header) cacheControl {
+	cc := cacheControl{}
+	ccHeader := headers.Get("Cache-Control")
+	for _, part := range strings.Split(ccHeader, ",") {
+		part = strings.Trim(part, " ")
+		if part == "" {
+			continue
+		}
+		if strings.ContainsRune(part, '=') {
+			keyval := strings.Split(part, "=")
+			cc[strings.Trim(keyval[0], " ")] = strings.Trim(keyval[1], ",")
+		} else {
+			cc[part] = ""
+		}
+	}
+	return cc
+}
+
+// CacheExpires helper function to determine remaining time before repeating a request.
+func CacheExpires(r *http.Response) time.Time {
+	// Figure out when the cache expires.
+	var expires time.Time
+	now, err := time.Parse(time.RFC1123, r.Header.Get("date"))
+	if err != nil {
+		return time.Now()
+	}
+	respCacheControl := parseCacheControl(r.Header)
+
+	if maxAge, ok := respCacheControl["max-age"]; ok {
+		lifetime, err := time.ParseDuration(maxAge + "s")
+		if err != nil {
+			expires = now
+		}
+		expires = now.Add(lifetime)
+	} else {
+		expiresHeader := r.Header.Get("Expires")
+		if expiresHeader != "" {
+			expires, err = time.Parse(time.RFC1123, expiresHeader)
+			if err != nil {
+				expires = now
+			}
+		}
+	}
+	return expires
+}
+
+func strlen(s string) int {
+	return utf8.RuneCountInString(s)
 }

samples/client/petstore/go/go-petstore/model_client.go

@@ -0,0 +1,15 @@
+/*
+ * Swagger Petstore
+ *
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * API version: 1.0.0
+ * Contact: apiteam@swagger.io
+ * Generated by: Swagger Codegen (https://github.com/swagger-api/swagger-codegen.git)
+ */
+
+package petstore
+
+type Client struct {
+	Client string `json:"client,omitempty"`
+}

samples/server/petstore/go-api-server/.swagger-codegen/VERSION

@@ -1 +1 @@
-2.3.0-SNAPSHOT
+2.4.0-SNAPSHOT

samples/server/petstore/go-api-server/api/swagger.yaml

@@ -108,11 +108,11 @@ paths:
         type: "array"
         items:
           type: "string"
-          default: "available"
           enum:
           - "available"
           - "pending"
           - "sold"
+          default: "available"
         collectionFormat: "csv"
         x-exportParamName: "Status"
       responses:

samples/server/petstore/go-api-server/go/README.md

@@ -13,7 +13,6 @@ To see how to make this your own, look here:
 [README](https://github.com/swagger-api/swagger-codegen/blob/master/README.md)
 
 - API version: 1.0.0
-- Build date: 2017-12-20T21:53:07.200Z
 
 
 ### Running the server