Test go client with aws signature in github workflow (#21657)

* test go client with aws signature in github workflow

* fix path

* fix path

* test with windows

* omit version

.github/workflows/samples-go-client.yaml

@@ -0,0 +1,31 @@
+name: Samples Go Clients
+
+on:
+  push:
+    paths:
+      - 'samples/openapi3/client/petstore/go/go-petstore-aws-signature/**'
+  pull_request:
+    paths:
+      - 'samples/openapi3/client/petstore/go/go-petstore-aws-signature/**'
+
+jobs:
+  build:
+    name: Build Go
+    runs-on: windows-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        sample:
+          - 'samples/openapi3/client/petstore/go/go-petstore-aws-signature/'
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-go@v5
+      - run: go version
+      - name: Install Dependencies
+        working-directory: ${{ matrix.sample }}
+        run: |
+          go mod tidy
+      - name: Run test
+        working-directory: ${{ matrix.sample }}
+        run: go test -mod=mod -v
+

bin/configs/go-petstore-aws-signature.yaml

@@ -0,0 +1,10 @@
+generatorName: go
+outputDir: samples/openapi3/client/petstore/go/go-petstore-aws-signature
+inputSpec: modules/openapi-generator/src/test/resources/3_0/petstore-addpet-only.yaml
+templateDir: modules/openapi-generator/src/main/resources/go
+additionalProperties:
+  enumClassPrefix: "true"
+  packageName: petstore
+  disallowAdditionalPropertiesIfNotPresent: false
+  withAWSV4Signature: true
+  

samples/openapi3/client/petstore/go/go-petstore-aws-signature/.gitignore

@@ -0,0 +1,24 @@
+# Compiled Object files, Static and Dynamic libs (Shared Objects)
+*.o
+*.a
+*.so
+
+# Folders
+_obj
+_test
+
+# Architecture specific extensions/prefixes
+*.[568vq]
+[568vq].out
+
+*.cgo1.go
+*.cgo2.c
+_cgo_defun.c
+_cgo_gotypes.go
+_cgo_export.*
+
+_testmain.go
+
+*.exe
+*.test
+*.prof

samples/openapi3/client/petstore/go/go-petstore-aws-signature/.openapi-generator-ignore

@@ -0,0 +1,23 @@
+# OpenAPI Generator Ignore
+# Generated by openapi-generator https://github.com/openapitools/openapi-generator
+
+# Use this file to prevent files from being overwritten by the generator.
+# The patterns follow closely to .gitignore or .dockerignore.
+
+# As an example, the C# client generator defines ApiClient.cs.
+# You can make changes and tell OpenAPI Generator to ignore just this file by uncommenting the following line:
+#ApiClient.cs
+
+# You can match any string of characters against a directory, file or extension with a single asterisk (*):
+#foo/*/qux
+# The above matches foo/bar/qux and foo/baz/qux, but not foo/bar/baz/qux
+
+# You can recursively match patterns against a directory, file or extension with a double asterisk (**):
+#foo/**/qux
+# This matches foo/bar/qux, foo/baz/qux, and foo/bar/baz/qux
+
+# You can also negate patterns with an exclamation (!).
+# For example, you can ignore all files in a docs folder with the file extension .md:
+#docs/*.md
+# Then explicitly reverse the ignore rule for a single file:
+#!docs/README.md

samples/openapi3/client/petstore/go/go-petstore-aws-signature/.openapi-generator/FILES

@@ -0,0 +1,19 @@
+.gitignore
+.travis.yml
+README.md
+api/openapi.yaml
+api_pet.go
+client.go
+configuration.go
+docs/Category.md
+docs/Pet.md
+docs/PetAPI.md
+docs/Tag.md
+git_push.sh
+go.mod
+go.sum
+model_category.go
+model_pet.go
+model_tag.go
+response.go
+utils.go

samples/openapi3/client/petstore/go/go-petstore-aws-signature/.openapi-generator/VERSION

@@ -0,0 +1 @@
+7.15.0-SNAPSHOT

samples/openapi3/client/petstore/go/go-petstore-aws-signature/.travis.yml

@@ -0,0 +1,8 @@
+language: go
+
+install:
+  - go get -d -v .
+
+script:
+  - go build -v ./
+

samples/openapi3/client/petstore/go/go-petstore-aws-signature/README.md

@@ -0,0 +1,145 @@
+# Go API client for petstore
+
+This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+
+## Overview
+This API client was generated by the [OpenAPI Generator](https://openapi-generator.tech) project.  By using the [OpenAPI-spec](https://www.openapis.org/) from a remote server, you can easily generate an API client.
+
+- API version: 1.0.0
+- Package version: 1.0.0
+- Generator version: 7.15.0-SNAPSHOT
+- Build package: org.openapitools.codegen.languages.GoClientCodegen
+
+## Installation
+
+Install the following dependencies:
+
+```sh
+go get github.com/stretchr/testify/assert
+go get golang.org/x/oauth2
+go get golang.org/x/net/context
+```
+
+Put the package under your project folder and add the following in import:
+
+```go
+import petstore "github.com/GIT_USER_ID/GIT_REPO_ID"
+```
+
+To use a proxy, set the environment variable `HTTP_PROXY`:
+
+```go
+os.Setenv("HTTP_PROXY", "http://proxy_name:proxy_port")
+```
+
+## Configuration of Server URL
+
+Default configuration comes with `Servers` field that contains server objects as defined in the OpenAPI specification.
+
+### Select Server Configuration
+
+For using other server than the one defined on index 0 set context value `petstore.ContextServerIndex` of type `int`.
+
+```go
+ctx := context.WithValue(context.Background(), petstore.ContextServerIndex, 1)
+```
+
+### Templated Server URL
+
+Templated server URL is formatted using default variables from configuration or from context value `petstore.ContextServerVariables` of type `map[string]string`.
+
+```go
+ctx := context.WithValue(context.Background(), petstore.ContextServerVariables, map[string]string{
+	"basePath": "v2",
+})
+```
+
+Note, enum values are always validated and all unused variables are silently ignored.
+
+### URLs Configuration per Operation
+
+Each operation can use different server URL defined using `OperationServers` map in the `Configuration`.
+An operation is uniquely identified by `"{classname}Service.{nickname}"` string.
+Similar rules for overriding default operation server index and variables applies by using `petstore.ContextOperationServerIndices` and `petstore.ContextOperationServerVariables` context maps.
+
+```go
+ctx := context.WithValue(context.Background(), petstore.ContextOperationServerIndices, map[string]int{
+	"{classname}Service.{nickname}": 2,
+})
+ctx = context.WithValue(context.Background(), petstore.ContextOperationServerVariables, map[string]map[string]string{
+	"{classname}Service.{nickname}": {
+		"port": "8443",
+	},
+})
+```
+
+## Documentation for API Endpoints
+
+All URIs are relative to *http://petstore.swagger.io/v2*
+
+Class | Method | HTTP request | Description
+------------ | ------------- | ------------- | -------------
+*PetAPI* | [**AddPet**](docs/PetAPI.md#addpet) | **Post** /pet | Add a new pet to the store
+
+
+## Documentation For Models
+
+ - [Category](docs/Category.md)
+ - [Pet](docs/Pet.md)
+ - [Tag](docs/Tag.md)
+
+
+## Documentation For Authorization
+
+
+Authentication schemes defined for the API:
+### petstore_auth
+
+
+- **Type**: OAuth
+- **Flow**: implicit
+- **Authorization URL**: http://petstore.swagger.io/api/oauth/dialog
+- **Scopes**: 
+ - **write:pets**: modify pets in your account
+ - **read:pets**: read your pets
+
+Example
+
+```go
+auth := context.WithValue(context.Background(), petstore.ContextAccessToken, "ACCESSTOKENSTRING")
+r, err := client.Service.Operation(auth, args)
+```
+
+Or via OAuth2 module to automatically refresh tokens and perform user authentication.
+
+```go
+import "golang.org/x/oauth2"
+
+/* Perform OAuth2 round trip request and obtain a token */
+
+tokenSource := oauth2cfg.TokenSource(createContext(httpClient), &token)
+auth := context.WithValue(oauth2.NoContext, petstore.ContextOAuth2, tokenSource)
+r, err := client.Service.Operation(auth, args)
+```
+
+
+## Documentation for Utility Methods
+
+Due to the fact that model structure members are all pointers, this package contains
+a number of utility functions to easily obtain pointers to values of basic types.
+Each of these functions takes a value of the given basic type and returns a pointer to it:
+
+* `PtrBool`
+* `PtrInt`
+* `PtrInt32`
+* `PtrInt64`
+* `PtrFloat`
+* `PtrFloat32`
+* `PtrFloat64`
+* `PtrString`
+* `PtrTime`
+
+## Author
+
+
+

samples/openapi3/client/petstore/go/go-petstore-aws-signature/api/openapi.yaml

@@ -0,0 +1,151 @@
+openapi: 3.0.0
+info:
+  description: "This is a sample server Petstore server. For this sample, you can\
+    \ use the api key `special-key` to test the authorization filters."
+  license:
+    name: Apache-2.0
+    url: https://www.apache.org/licenses/LICENSE-2.0.html
+  title: OpenAPI Petstore
+  version: 1.0.0
+externalDocs:
+  description: Find out more about Swagger
+  url: http://swagger.io
+servers:
+- url: http://petstore.swagger.io/v2
+tags:
+- description: Everything about your Pets
+  name: pet
+paths:
+  /pet:
+    post:
+      description: ""
+      operationId: addPet
+      requestBody:
+        $ref: "#/components/requestBodies/Pet"
+      responses:
+        "200":
+          content:
+            application/xml:
+              schema:
+                $ref: "#/components/schemas/Pet"
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Pet"
+          description: successful operation
+        "405":
+          description: Invalid input
+      security:
+      - petstore_auth:
+        - write:pets
+        - read:pets
+      summary: Add a new pet to the store
+      tags:
+      - pet
+components:
+  requestBodies:
+    Pet:
+      content:
+        application/json:
+          schema:
+            $ref: "#/components/schemas/Pet"
+        application/xml:
+          schema:
+            $ref: "#/components/schemas/Pet"
+      description: Pet object that needs to be added to the store
+      required: true
+  schemas:
+    Category:
+      description: A category for a pet
+      example:
+        name: name
+        id: 6
+      properties:
+        id:
+          format: int64
+          type: integer
+        name:
+          pattern: "^[a-zA-Z0-9]+[a-zA-Z0-9\\.\\-_]*[a-zA-Z0-9]+$"
+          type: string
+      title: Pet category
+      type: object
+      xml:
+        name: Category
+    Tag:
+      description: A tag for a pet
+      example:
+        name: name
+        id: 1
+      properties:
+        id:
+          format: int64
+          type: integer
+        name:
+          type: string
+      title: Pet Tag
+      type: object
+      xml:
+        name: Tag
+    Pet:
+      description: A pet for sale in the pet store
+      example:
+        photoUrls:
+        - photoUrls
+        - photoUrls
+        name: doggie
+        id: 0
+        category:
+          name: name
+          id: 6
+        tags:
+        - name: name
+          id: 1
+        - name: name
+          id: 1
+        status: available
+      properties:
+        id:
+          format: int64
+          type: integer
+        category:
+          $ref: "#/components/schemas/Category"
+        name:
+          example: doggie
+          type: string
+        photoUrls:
+          items:
+            type: string
+          type: array
+          xml:
+            name: photoUrl
+            wrapped: true
+        tags:
+          items:
+            $ref: "#/components/schemas/Tag"
+          type: array
+          xml:
+            name: tag
+            wrapped: true
+        status:
+          deprecated: true
+          description: pet status in the store
+          enum:
+          - available
+          - pending
+          - sold
+          type: string
+      required:
+      - name
+      - photoUrls
+      title: a Pet
+      type: object
+      xml:
+        name: Pet
+  securitySchemes:
+    petstore_auth:
+      flows:
+        implicit:
+          authorizationUrl: http://petstore.swagger.io/api/oauth/dialog
+          scopes:
+            write:pets: modify pets in your account
+            read:pets: read your pets
+      type: oauth2

samples/openapi3/client/petstore/go/go-petstore-aws-signature/api_pet.go

@@ -0,0 +1,134 @@
+/*
+OpenAPI Petstore
+
+This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+
+API version: 1.0.0
+*/
+
+// Code generated by OpenAPI Generator (https://openapi-generator.tech); DO NOT EDIT.
+
+package petstore
+
+import (
+	"bytes"
+	"context"
+	"io"
+	"net/http"
+	"net/url"
+)
+
+
+// PetAPIService PetAPI service
+type PetAPIService service
+
+type ApiAddPetRequest struct {
+	ctx context.Context
+	ApiService *PetAPIService
+	pet *Pet
+}
+
+// Pet object that needs to be added to the store
+func (r ApiAddPetRequest) Pet(pet Pet) ApiAddPetRequest {
+	r.pet = &pet
+	return r
+}
+
+func (r ApiAddPetRequest) Execute() (*Pet, *http.Response, error) {
+	return r.ApiService.AddPetExecute(r)
+}
+
+/*
+AddPet Add a new pet to the store
+
+
+
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @return ApiAddPetRequest
+*/
+func (a *PetAPIService) AddPet(ctx context.Context) ApiAddPetRequest {
+	return ApiAddPetRequest{
+		ApiService: a,
+		ctx: ctx,
+	}
+}
+
+// Execute executes the request
+//  @return Pet
+func (a *PetAPIService) AddPetExecute(r ApiAddPetRequest) (*Pet, *http.Response, error) {
+	var (
+		localVarHTTPMethod   = http.MethodPost
+		localVarPostBody     interface{}
+		formFiles            []formFile
+		localVarReturnValue  *Pet
+	)
+
+	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "PetAPIService.AddPet")
+	if err != nil {
+		return localVarReturnValue, nil, &GenericOpenAPIError{error: err.Error()}
+	}
+
+	localVarPath := localBasePath + "/pet"
+
+	localVarHeaderParams := make(map[string]string)
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
+	if r.pet == nil {
+		return localVarReturnValue, nil, reportError("pet is required and must be specified")
+	}
+
+	// to determine the Content-Type header
+	localVarHTTPContentTypes := []string{"application/json", "application/xml"}
+
+	// set Content-Type header
+	localVarHTTPContentType := selectHeaderContentType(localVarHTTPContentTypes)
+	if localVarHTTPContentType != "" {
+		localVarHeaderParams["Content-Type"] = localVarHTTPContentType
+	}
+
+	// to determine the Accept header
+	localVarHTTPHeaderAccepts := []string{"application/xml", "application/json"}
+
+	// set Accept header
+	localVarHTTPHeaderAccept := selectHeaderAccept(localVarHTTPHeaderAccepts)
+	if localVarHTTPHeaderAccept != "" {
+		localVarHeaderParams["Accept"] = localVarHTTPHeaderAccept
+	}
+	// body params
+	localVarPostBody = r.pet
+	req, err := a.client.prepareRequest(r.ctx, localVarPath, localVarHTTPMethod, localVarPostBody, localVarHeaderParams, localVarQueryParams, localVarFormParams, formFiles)
+	if err != nil {
+		return localVarReturnValue, nil, err
+	}
+
+	localVarHTTPResponse, err := a.client.callAPI(req)
+	if err != nil || localVarHTTPResponse == nil {
+		return localVarReturnValue, localVarHTTPResponse, err
+	}
+
+	localVarBody, err := io.ReadAll(localVarHTTPResponse.Body)
+	localVarHTTPResponse.Body.Close()
+	localVarHTTPResponse.Body = io.NopCloser(bytes.NewBuffer(localVarBody))
+	if err != nil {
+		return localVarReturnValue, localVarHTTPResponse, err
+	}
+
+	if localVarHTTPResponse.StatusCode >= 300 {
+		newErr := &GenericOpenAPIError{
+			body:  localVarBody,
+			error: localVarHTTPResponse.Status,
+		}
+		return localVarReturnValue, localVarHTTPResponse, newErr
+	}
+
+	err = a.client.decode(&localVarReturnValue, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
+	if err != nil {
+		newErr := &GenericOpenAPIError{
+			body:  localVarBody,
+			error: err.Error(),
+		}
+		return localVarReturnValue, localVarHTTPResponse, newErr
+	}
+
+	return localVarReturnValue, localVarHTTPResponse, nil
+}

samples/openapi3/client/petstore/go/go-petstore-aws-signature/client.go

@@ -0,0 +1,710 @@
+/*
+OpenAPI Petstore
+
+This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+
+API version: 1.0.0
+*/
+
+// Code generated by OpenAPI Generator (https://openapi-generator.tech); DO NOT EDIT.
+
+package petstore
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"encoding/xml"
+	"errors"
+	"fmt"
+	"io"
+	"log"
+	"mime/multipart"
+	"net/http"
+	"net/http/httputil"
+	"net/url"
+	"os"
+	"path/filepath"
+	"reflect"
+	"regexp"
+	"strconv"
+	"strings"
+	"time"
+	"unicode/utf8"
+
+	"golang.org/x/oauth2"
+	awsv4 "github.com/aws/aws-sdk-go-v2/aws/signer/v4"
+	awscredentials "github.com/aws/aws-sdk-go-v2/credentials"
+	"crypto/sha256"
+	"encoding/hex"
+)
+
+var (
+	JsonCheck       = regexp.MustCompile(`(?i:(?:application|text)/(?:[^;]+\+)?json)`)
+	XmlCheck        = regexp.MustCompile(`(?i:(?:application|text)/(?:[^;]+\+)?xml)`)
+	queryParamSplit = regexp.MustCompile(`(^|&)([^&]+)`)
+	queryDescape    = strings.NewReplacer( "%5B", "[", "%5D", "]" )
+)
+
+// APIClient manages communication with the OpenAPI 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
+
+	PetAPI *PetAPIService
+}
+
+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.PetAPI = (*PetAPIService)(&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 insensitive match, finding needle in a haystack
+func contains(haystack []string, needle string) bool {
+	for _, a := range haystack {
+		if strings.EqualFold(a, 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
+}
+
+func parameterValueToString( obj interface{}, key string ) string {
+	if reflect.TypeOf(obj).Kind() != reflect.Ptr {
+		if actualObj, ok := obj.(interface{ GetActualInstanceValue() interface{} }); ok {
+			return fmt.Sprintf("%v", actualObj.GetActualInstanceValue())
+		}
+
+		return fmt.Sprintf("%v", obj)
+	}
+	var param,ok = obj.(MappedNullable)
+	if !ok {
+		return ""
+	}
+	dataMap,err := param.ToMap()
+	if err != nil {
+		return ""
+	}
+	return fmt.Sprintf("%v", dataMap[key])
+}
+
+// parameterAddToHeaderOrQuery adds the provided object to the request header or url query
+// supporting deep object syntax
+func parameterAddToHeaderOrQuery(headerOrQueryParams interface{}, keyPrefix string, obj interface{}, style string, collectionType string) {
+	var v = reflect.ValueOf(obj)
+	var value = ""
+	if v == reflect.ValueOf(nil) {
+		value = "null"
+	} else {
+		switch v.Kind() {
+			case reflect.Invalid:
+				value = "invalid"
+
+			case reflect.Struct:
+				if t,ok := obj.(MappedNullable); ok {
+					dataMap,err := t.ToMap()
+					if err != nil {
+						return
+					}
+					parameterAddToHeaderOrQuery(headerOrQueryParams, keyPrefix, dataMap, style, collectionType)
+					return
+				}
+				if t, ok := obj.(time.Time); ok {
+					parameterAddToHeaderOrQuery(headerOrQueryParams, keyPrefix, t.Format(time.RFC3339Nano), style, collectionType)
+					return
+				}
+				value = v.Type().String() + " value"
+			case reflect.Slice:
+				var indValue = reflect.ValueOf(obj)
+				if indValue == reflect.ValueOf(nil) {
+					return
+				}
+				var lenIndValue = indValue.Len()
+				for i:=0;i<lenIndValue;i++ {
+					var arrayValue = indValue.Index(i)
+					var keyPrefixForCollectionType = keyPrefix
+					if style == "deepObject" {
+						keyPrefixForCollectionType = keyPrefix + "[" + strconv.Itoa(i) + "]"
+					}
+					parameterAddToHeaderOrQuery(headerOrQueryParams, keyPrefixForCollectionType, arrayValue.Interface(), style, collectionType)
+				}
+				return
+
+			case reflect.Map:
+				var indValue = reflect.ValueOf(obj)
+				if indValue == reflect.ValueOf(nil) {
+					return
+				}
+				iter := indValue.MapRange()
+				for iter.Next() {
+					k,v := iter.Key(), iter.Value()
+					parameterAddToHeaderOrQuery(headerOrQueryParams, fmt.Sprintf("%s[%s]", keyPrefix, k.String()), v.Interface(), style, collectionType)
+				}
+				return
+
+			case reflect.Interface:
+				fallthrough
+			case reflect.Ptr:
+				parameterAddToHeaderOrQuery(headerOrQueryParams, keyPrefix, v.Elem().Interface(), style, collectionType)
+				return
+
+			case reflect.Int, reflect.Int8, reflect.Int16,
+				reflect.Int32, reflect.Int64:
+				value = strconv.FormatInt(v.Int(), 10)
+			case reflect.Uint, reflect.Uint8, reflect.Uint16,
+				reflect.Uint32, reflect.Uint64, reflect.Uintptr:
+				value = strconv.FormatUint(v.Uint(), 10)
+			case reflect.Float32, reflect.Float64:
+				value = strconv.FormatFloat(v.Float(), 'g', -1, 32)
+			case reflect.Bool:
+				value = strconv.FormatBool(v.Bool())
+			case reflect.String:
+				value = v.String()
+			default:
+				value = v.Type().String() + " value"
+		}
+	}
+
+	switch valuesMap := headerOrQueryParams.(type) {
+		case url.Values:
+			if collectionType == "csv" && valuesMap.Get(keyPrefix) != "" {
+				valuesMap.Set(keyPrefix, valuesMap.Get(keyPrefix) + "," + value)
+			} else {
+				valuesMap.Add(keyPrefix, value)
+			}
+			break
+		case map[string]string:
+			valuesMap[keyPrefix] = value
+			break
+	}
+}
+
+// helper for converting interface{} parameters to json strings
+func parameterToJson(obj interface{}) (string, error) {
+	jsonBuf, err := json.Marshal(obj)
+	if err != nil {
+		return "", err
+	}
+	return string(jsonBuf), err
+}
+
+// callAPI do the request.
+func (c *APIClient) callAPI(request *http.Request) (*http.Response, error) {
+	if c.cfg.Debug {
+		dump, err := httputil.DumpRequestOut(request, true)
+		if err != nil {
+			return nil, err
+		}
+		log.Printf("\n%s\n", string(dump))
+	}
+
+	resp, err := c.cfg.HTTPClient.Do(request)
+	if err != nil {
+		return resp, err
+	}
+
+	if c.cfg.Debug {
+		dump, err := httputil.DumpResponse(resp, true)
+		if err != nil {
+			return resp, err
+		}
+		log.Printf("\n%s\n", string(dump))
+	}
+	return resp, err
+}
+
+// Allow modification of underlying config for alternate implementations and testing
+// Caution: modifying the configuration while live can cause data races and potentially unwanted behavior
+func (c *APIClient) GetConfig() *Configuration {
+	return c.cfg
+}
+
+type formFile struct {
+		fileBytes []byte
+		fileName string
+		formFileName string
+}
+
+// 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,
+	formFiles []formFile) (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 strings.HasPrefix(headerParams["Content-Type"], "multipart/form-data") && len(formParams) > 0 || (len(formFiles) > 0) {
+		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)
+				}
+			}
+		}
+		for _, formFile := range formFiles {
+			if len(formFile.fileBytes) > 0 && formFile.fileName != "" {
+				w.Boundary()
+				part, err := w.CreateFormFile(formFile.formFileName, filepath.Base(formFile.fileName))
+				if err != nil {
+						return nil, err
+				}
+				_, err = part.Write(formFile.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()
+	}
+
+	if strings.HasPrefix(headerParams["Content-Type"], "application/x-www-form-urlencoded") && len(formParams) > 0 {
+		if body != nil {
+			return nil, errors.New("Cannot specify postBody and x-www-form-urlencoded form at the same time.")
+		}
+		body = &bytes.Buffer{}
+		body.WriteString(formParams.Encode())
+		// Set Content-Length
+		headerParams["Content-Length"] = fmt.Sprintf("%d", body.Len())
+	}
+
+	// Setup path and query parameters
+	url, err := url.Parse(path)
+	if err != nil {
+		return nil, err
+	}
+
+	// Override request host, if applicable
+	if c.cfg.Host != "" {
+		url.Host = c.cfg.Host
+	}
+
+	// Override request scheme, if applicable
+	if c.cfg.Scheme != "" {
+		url.Scheme = c.cfg.Scheme
+	}
+
+	// Adding Query Param
+	query := url.Query()
+	for k, v := range queryParams {
+		for _, iv := range v {
+			query.Add(k, iv)
+		}
+	}
+
+	// Encode the parameters.
+	url.RawQuery = queryParamSplit.ReplaceAllStringFunc(query.Encode(), func(s string) string {
+		pieces := strings.Split(s, "=")
+		pieces[0] = queryDescape.Replace(pieces[0])
+		return strings.Join(pieces, "=")
+	})
+
+	// 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[h] = []string{v}
+		}
+		localVarRequest.Header = headers
+	}
+
+	// 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)
+		}
+
+		// AWS Signature v4 Authentication
+		if auth, ok := ctx.Value(ContextAWSv4).(AWSv4); ok {
+			credsProvider := awscredentials.NewStaticCredentialsProvider(auth.AccessKey, auth.SecretKey, auth.SessionToken)
+			creds, err := credsProvider.Retrieve(ctx)
+			if err != nil {
+				return nil, err
+			}
+
+			// Define default values for region and service to maintain backward compatibility
+			region := auth.Region
+			if region == "" {
+				region = "eu-west-2"
+			}
+			service := auth.Service
+			if service == "" {
+				service = "oapi"
+			}
+
+			// Compute payload hash from the request body
+			var payloadHash string
+			if body == nil {
+				// Empty body
+				hash := sha256.Sum256([]byte(""))
+				payloadHash = hex.EncodeToString(hash[:])
+			} else {
+				// Hash the actual body content
+				bodyBytes := []byte(body.String())
+				hash := sha256.Sum256(bodyBytes)
+				payloadHash = hex.EncodeToString(hash[:])
+			}
+
+			// Sign the request with the computed payload hash
+			signer := awsv4.NewSigner()
+			err = signer.SignHTTP(ctx, creds, localVarRequest, payloadHash, service, region, time.Now())
+			if err != nil {
+				return nil, err
+			}
+		}
+	}
+
+	for header, value := range c.cfg.DefaultHeader {
+		localVarRequest.Header.Add(header, value)
+	}
+	return localVarRequest, nil
+}
+
+func (c *APIClient) decode(v interface{}, b []byte, contentType string) (err error) {
+	if len(b) == 0 {
+		return nil
+	}
+	if s, ok := v.(*string); ok {
+		*s = string(b)
+		return nil
+	}
+	if f, ok := v.(*os.File); ok {
+		f, err = os.CreateTemp("", "HttpClientFile")
+		if err != nil {
+			return
+		}
+		_, err = f.Write(b)
+		if err != nil {
+			return
+		}
+		_, err = f.Seek(0, io.SeekStart)
+		return
+	}
+	if f, ok := v.(**os.File); ok {
+		*f, err = os.CreateTemp("", "HttpClientFile")
+		if err != nil {
+			return
+		}
+		_, err = (*f).Write(b)
+		if err != nil {
+			return
+		}
+		_, err = (*f).Seek(0, io.SeekStart)
+		return
+	}
+	if XmlCheck.MatchString(contentType) {
+		if err = xml.Unmarshal(b, v); err != nil {
+			return err
+		}
+		return nil
+	}
+	if JsonCheck.MatchString(contentType) {
+		if actualObj, ok := v.(interface{ GetActualInstance() interface{} }); ok { // oneOf, anyOf schemas
+			if unmarshalObj, ok := actualObj.(interface{ UnmarshalJSON([]byte) error }); ok { // make sure it has UnmarshalJSON defined
+				if err = unmarshalObj.UnmarshalJSON(b); err != nil {
+					return err
+				}
+			} else {
+				return errors.New("Unknown type with GetActualInstance but no unmarshalObj.UnmarshalJSON defined")
+			}
+		} else if err = json.Unmarshal(b, v); err != nil { // simple model
+			return err
+		}
+		return nil
+	}
+	return errors.New("undefined response type")
+}
+
+// Add a file to the multipart request
+func addFile(w *multipart.Writer, fieldName, path string) error {
+	file, err := os.Open(filepath.Clean(path))
+	if err != nil {
+		return err
+	}
+	err = file.Close()
+	if err != nil {
+		return err
+	}
+
+	part, err := w.CreateFormFile(fieldName, filepath.Base(path))
+	if err != nil {
+		return err
+	}
+	_, err = io.Copy(part, file)
+
+	return err
+}
+
+// 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 fp, ok := body.(*os.File); ok {
+		_, err = bodyBuf.ReadFrom(fp)
+	} else if b, ok := body.([]byte); ok {
+		_, err = bodyBuf.Write(b)
+	} else if s, ok := body.(string); ok {
+		_, err = bodyBuf.WriteString(s)
+	} 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) {
+		var bs []byte
+		bs, err = xml.Marshal(body)
+		if err == nil {
+			bodyBuf.Write(bs)
+		}
+	}
+
+	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
+		} else {
+			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)
+}
+
+// GenericOpenAPIError Provides access to the body, error and model on returned errors.
+type GenericOpenAPIError struct {
+	body  []byte
+	error string
+	model interface{}
+}
+
+// Error returns non-empty string if there was an error.
+func (e GenericOpenAPIError) Error() string {
+	return e.error
+}
+
+// Body returns the raw bytes of the response
+func (e GenericOpenAPIError) Body() []byte {
+	return e.body
+}
+
+// Model returns the unpacked model of the error
+func (e GenericOpenAPIError) Model() interface{} {
+	return e.model
+}
+
+// format error message using title and detail when model implements rfc7807
+func formatErrorMessage(status string, v interface{}) string {
+	str := ""
+	metaValue := reflect.ValueOf(v).Elem()
+
+	if metaValue.Kind() == reflect.Struct {
+		field := metaValue.FieldByName("Title")
+		if field != (reflect.Value{}) {
+			str = fmt.Sprintf("%s", field.Interface())
+		}
+
+		field = metaValue.FieldByName("Detail")
+		if field != (reflect.Value{}) {
+			str = fmt.Sprintf("%s (%s)", str, field.Interface())
+		}
+	}
+
+	return strings.TrimSpace(fmt.Sprintf("%s %s", status, str))
+}

samples/openapi3/client/petstore/go/go-petstore-aws-signature/configuration.go

@@ -0,0 +1,231 @@
+/*
+OpenAPI Petstore
+
+This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+
+API version: 1.0.0
+*/
+
+// Code generated by OpenAPI Generator (https://openapi-generator.tech); DO NOT EDIT.
+
+package petstore
+
+import (
+	"context"
+	"fmt"
+	"net/http"
+	"strings"
+)
+
+// contextKeys are used to identify the type of value in the context.
+// Since these are string, it is possible to get a short description of the
+// context key for logging and debugging using key.String().
+
+type contextKey string
+
+func (c contextKey) String() string {
+	return "auth " + string(c)
+}
+
+var (
+	// ContextOAuth2 takes an oauth2.TokenSource as authentication for the request.
+	ContextOAuth2 = contextKey("token")
+
+	// ContextAWSv4 takes an Access Key and a Secret Key for signing AWS Signature v4
+	ContextAWSv4 = contextKey("awsv4")
+
+	// ContextServerIndex uses a server configuration from the index.
+	ContextServerIndex = contextKey("serverIndex")
+
+	// ContextOperationServerIndices uses a server configuration from the index mapping.
+	ContextOperationServerIndices = contextKey("serverOperationIndices")
+
+	// ContextServerVariables overrides a server configuration variables.
+	ContextServerVariables = contextKey("serverVariables")
+
+	// ContextOperationServerVariables overrides a server configuration variables using operation specific values.
+	ContextOperationServerVariables = contextKey("serverOperationVariables")
+)
+
+// BasicAuth provides basic http authentication to a request passed via context using ContextBasicAuth
+type BasicAuth struct {
+	UserName string `json:"userName,omitempty"`
+	Password string `json:"password,omitempty"`
+}
+
+// APIKey provides API key based authentication to a request passed via context using ContextAPIKey
+type APIKey struct {
+	Key    string
+	Prefix string
+}
+
+// AWSv4 provides AWS Signature to a request passed via context using ContextAWSv4
+// https://docs.aws.amazon.com/general/latest/gr/signature-version-4.html
+type AWSv4 struct {
+	AccessKey string
+	SecretKey string
+	SessionToken string
+	Region string
+	Service string
+}
+
+// ServerVariable stores the information about a server variable
+type ServerVariable struct {
+	Description  string
+	DefaultValue string
+	EnumValues   []string
+}
+
+// ServerConfiguration stores the information about a server
+type ServerConfiguration struct {
+	URL string
+	Description string
+	Variables map[string]ServerVariable
+}
+
+// ServerConfigurations stores multiple ServerConfiguration items
+type ServerConfigurations []ServerConfiguration
+
+// Configuration stores the configuration of the API client
+type Configuration struct {
+	Host             string            `json:"host,omitempty"`
+	Scheme           string            `json:"scheme,omitempty"`
+	DefaultHeader    map[string]string `json:"defaultHeader,omitempty"`
+	UserAgent        string            `json:"userAgent,omitempty"`
+	Debug            bool              `json:"debug,omitempty"`
+	Servers          ServerConfigurations
+	OperationServers map[string]ServerConfigurations
+	HTTPClient       *http.Client
+}
+
+// NewConfiguration returns a new Configuration object
+func NewConfiguration() *Configuration {
+	cfg := &Configuration{
+		DefaultHeader:    make(map[string]string),
+		UserAgent:        "OpenAPI-Generator/1.0.0/go",
+		Debug:            false,
+		Servers:          ServerConfigurations{
+			{
+				URL: "http://petstore.swagger.io/v2",
+				Description: "No description provided",
+			},
+		},
+		OperationServers: map[string]ServerConfigurations{
+		},
+	}
+	return cfg
+}
+
+// AddDefaultHeader adds a new HTTP header to the default header in the request
+func (c *Configuration) AddDefaultHeader(key string, value string) {
+	c.DefaultHeader[key] = value
+}
+
+// URL formats template on a index using given variables
+func (sc ServerConfigurations) URL(index int, variables map[string]string) (string, error) {
+	if index < 0 || len(sc) <= index {
+		return "", fmt.Errorf("index %v out of range %v", index, len(sc)-1)
+	}
+	server := sc[index]
+	url := server.URL
+
+	// go through variables and replace placeholders
+	for name, variable := range server.Variables {
+		if value, ok := variables[name]; ok {
+			found := bool(len(variable.EnumValues) == 0)
+			for _, enumValue := range variable.EnumValues {
+				if value == enumValue {
+					found = true
+				}
+			}
+			if !found {
+				return "", fmt.Errorf("the variable %s in the server URL has invalid value %v. Must be %v", name, value, variable.EnumValues)
+			}
+			url = strings.Replace(url, "{"+name+"}", value, -1)
+		} else {
+			url = strings.Replace(url, "{"+name+"}", variable.DefaultValue, -1)
+		}
+	}
+	return url, nil
+}
+
+// ServerURL returns URL based on server settings
+func (c *Configuration) ServerURL(index int, variables map[string]string) (string, error) {
+	return c.Servers.URL(index, variables)
+}
+
+func getServerIndex(ctx context.Context) (int, error) {
+	si := ctx.Value(ContextServerIndex)
+	if si != nil {
+		if index, ok := si.(int); ok {
+			return index, nil
+		}
+		return 0, reportError("Invalid type %T should be int", si)
+	}
+	return 0, nil
+}
+
+func getServerOperationIndex(ctx context.Context, endpoint string) (int, error) {
+	osi := ctx.Value(ContextOperationServerIndices)
+	if osi != nil {
+		if operationIndices, ok := osi.(map[string]int); !ok {
+			return 0, reportError("Invalid type %T should be map[string]int", osi)
+		} else {
+			index, ok := operationIndices[endpoint]
+			if ok {
+				return index, nil
+			}
+		}
+	}
+	return getServerIndex(ctx)
+}
+
+func getServerVariables(ctx context.Context) (map[string]string, error) {
+	sv := ctx.Value(ContextServerVariables)
+	if sv != nil {
+		if variables, ok := sv.(map[string]string); ok {
+			return variables, nil
+		}
+		return nil, reportError("ctx value of ContextServerVariables has invalid type %T should be map[string]string", sv)
+	}
+	return nil, nil
+}
+
+func getServerOperationVariables(ctx context.Context, endpoint string) (map[string]string, error) {
+	osv := ctx.Value(ContextOperationServerVariables)
+	if osv != nil {
+		if operationVariables, ok := osv.(map[string]map[string]string); !ok {
+			return nil, reportError("ctx value of ContextOperationServerVariables has invalid type %T should be map[string]map[string]string", osv)
+		} else {
+			variables, ok := operationVariables[endpoint]
+			if ok {
+				return variables, nil
+			}
+		}
+	}
+	return getServerVariables(ctx)
+}
+
+// ServerURLWithContext returns a new server URL given an endpoint
+func (c *Configuration) ServerURLWithContext(ctx context.Context, endpoint string) (string, error) {
+	sc, ok := c.OperationServers[endpoint]
+	if !ok {
+		sc = c.Servers
+	}
+
+	if ctx == nil {
+		return sc.URL(0, nil)
+	}
+
+	index, err := getServerOperationIndex(ctx, endpoint)
+	if err != nil {
+		return "", err
+	}
+
+	variables, err := getServerOperationVariables(ctx, endpoint)
+	if err != nil {
+		return "", err
+	}
+
+	return sc.URL(index, variables)
+}

samples/openapi3/client/petstore/go/go-petstore-aws-signature/docs/Category.md

@@ -0,0 +1,82 @@
+# Category
+
+## Properties
+
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**Id** | Pointer to **int64** |  | [optional] 
+**Name** | Pointer to **string** |  | [optional] 
+
+## Methods
+
+### NewCategory
+
+`func NewCategory() *Category`
+
+NewCategory instantiates a new Category object
+This constructor will assign default values to properties that have it defined,
+and makes sure properties required by API are set, but the set of arguments
+will change when the set of required properties is changed
+
+### NewCategoryWithDefaults
+
+`func NewCategoryWithDefaults() *Category`
+
+NewCategoryWithDefaults instantiates a new Category object
+This constructor will only assign default values to properties that have it defined,
+but it doesn't guarantee that properties required by API are set
+
+### GetId
+
+`func (o *Category) GetId() int64`
+
+GetId returns the Id field if non-nil, zero value otherwise.
+
+### GetIdOk
+
+`func (o *Category) GetIdOk() (*int64, bool)`
+
+GetIdOk returns a tuple with the Id field if it's non-nil, zero value otherwise
+and a boolean to check if the value has been set.
+
+### SetId
+
+`func (o *Category) SetId(v int64)`
+
+SetId sets Id field to given value.
+
+### HasId
+
+`func (o *Category) HasId() bool`
+
+HasId returns a boolean if a field has been set.
+
+### GetName
+
+`func (o *Category) GetName() string`
+
+GetName returns the Name field if non-nil, zero value otherwise.
+
+### GetNameOk
+
+`func (o *Category) GetNameOk() (*string, bool)`
+
+GetNameOk returns a tuple with the Name field if it's non-nil, zero value otherwise
+and a boolean to check if the value has been set.
+
+### SetName
+
+`func (o *Category) SetName(v string)`
+
+SetName sets Name field to given value.
+
+### HasName
+
+`func (o *Category) HasName() bool`
+
+HasName returns a boolean if a field has been set.
+
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
+

samples/openapi3/client/petstore/go/go-petstore-aws-signature/docs/Pet.md

@@ -0,0 +1,176 @@
+# Pet
+
+## Properties
+
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**Id** | Pointer to **int64** |  | [optional] 
+**Category** | Pointer to [**Category**](Category.md) |  | [optional] 
+**Name** | **string** |  | 
+**PhotoUrls** | **[]string** |  | 
+**Tags** | Pointer to [**[]Tag**](Tag.md) |  | [optional] 
+**Status** | Pointer to **string** | pet status in the store | [optional] 
+
+## Methods
+
+### NewPet
+
+`func NewPet(name string, photoUrls []string, ) *Pet`
+
+NewPet instantiates a new Pet object
+This constructor will assign default values to properties that have it defined,
+and makes sure properties required by API are set, but the set of arguments
+will change when the set of required properties is changed
+
+### NewPetWithDefaults
+
+`func NewPetWithDefaults() *Pet`
+
+NewPetWithDefaults instantiates a new Pet object
+This constructor will only assign default values to properties that have it defined,
+but it doesn't guarantee that properties required by API are set
+
+### GetId
+
+`func (o *Pet) GetId() int64`
+
+GetId returns the Id field if non-nil, zero value otherwise.
+
+### GetIdOk
+
+`func (o *Pet) GetIdOk() (*int64, bool)`
+
+GetIdOk returns a tuple with the Id field if it's non-nil, zero value otherwise
+and a boolean to check if the value has been set.
+
+### SetId
+
+`func (o *Pet) SetId(v int64)`
+
+SetId sets Id field to given value.
+
+### HasId
+
+`func (o *Pet) HasId() bool`
+
+HasId returns a boolean if a field has been set.
+
+### GetCategory
+
+`func (o *Pet) GetCategory() Category`
+
+GetCategory returns the Category field if non-nil, zero value otherwise.
+
+### GetCategoryOk
+
+`func (o *Pet) GetCategoryOk() (*Category, bool)`
+
+GetCategoryOk returns a tuple with the Category field if it's non-nil, zero value otherwise
+and a boolean to check if the value has been set.
+
+### SetCategory
+
+`func (o *Pet) SetCategory(v Category)`
+
+SetCategory sets Category field to given value.
+
+### HasCategory
+
+`func (o *Pet) HasCategory() bool`
+
+HasCategory returns a boolean if a field has been set.
+
+### GetName
+
+`func (o *Pet) GetName() string`
+
+GetName returns the Name field if non-nil, zero value otherwise.
+
+### GetNameOk
+
+`func (o *Pet) GetNameOk() (*string, bool)`
+
+GetNameOk returns a tuple with the Name field if it's non-nil, zero value otherwise
+and a boolean to check if the value has been set.
+
+### SetName
+
+`func (o *Pet) SetName(v string)`
+
+SetName sets Name field to given value.
+
+
+### GetPhotoUrls
+
+`func (o *Pet) GetPhotoUrls() []string`
+
+GetPhotoUrls returns the PhotoUrls field if non-nil, zero value otherwise.
+
+### GetPhotoUrlsOk
+
+`func (o *Pet) GetPhotoUrlsOk() (*[]string, bool)`
+
+GetPhotoUrlsOk returns a tuple with the PhotoUrls field if it's non-nil, zero value otherwise
+and a boolean to check if the value has been set.
+
+### SetPhotoUrls
+
+`func (o *Pet) SetPhotoUrls(v []string)`
+
+SetPhotoUrls sets PhotoUrls field to given value.
+
+
+### GetTags
+
+`func (o *Pet) GetTags() []Tag`
+
+GetTags returns the Tags field if non-nil, zero value otherwise.
+
+### GetTagsOk
+
+`func (o *Pet) GetTagsOk() (*[]Tag, bool)`
+
+GetTagsOk returns a tuple with the Tags field if it's non-nil, zero value otherwise
+and a boolean to check if the value has been set.
+
+### SetTags
+
+`func (o *Pet) SetTags(v []Tag)`
+
+SetTags sets Tags field to given value.
+
+### HasTags
+
+`func (o *Pet) HasTags() bool`
+
+HasTags returns a boolean if a field has been set.
+
+### GetStatus
+
+`func (o *Pet) GetStatus() string`
+
+GetStatus returns the Status field if non-nil, zero value otherwise.
+
+### GetStatusOk
+
+`func (o *Pet) GetStatusOk() (*string, bool)`
+
+GetStatusOk returns a tuple with the Status field if it's non-nil, zero value otherwise
+and a boolean to check if the value has been set.
+
+### SetStatus
+
+`func (o *Pet) SetStatus(v string)`
+
+SetStatus sets Status field to given value.
+
+### HasStatus
+
+`func (o *Pet) HasStatus() bool`
+
+HasStatus returns a boolean if a field has been set.
+
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
+

samples/openapi3/client/petstore/go/go-petstore-aws-signature/docs/PetAPI.md

@@ -0,0 +1,75 @@
+# \PetAPI
+
+All URIs are relative to *http://petstore.swagger.io/v2*
+
+Method | HTTP request | Description
+------------- | ------------- | -------------
+[**AddPet**](PetAPI.md#AddPet) | **Post** /pet | Add a new pet to the store
+
+
+
+## AddPet
+
+> Pet AddPet(ctx).Pet(pet).Execute()
+
+Add a new pet to the store
+
+
+
+### Example
+
+```go
+package main
+
+import (
+	"context"
+	"fmt"
+	"os"
+	openapiclient "github.com/GIT_USER_ID/GIT_REPO_ID"
+)
+
+func main() {
+	pet := *openapiclient.NewPet("doggie", []string{"PhotoUrls_example"}) // Pet | Pet object that needs to be added to the store
+
+	configuration := openapiclient.NewConfiguration()
+	apiClient := openapiclient.NewAPIClient(configuration)
+	resp, r, err := apiClient.PetAPI.AddPet(context.Background()).Pet(pet).Execute()
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Error when calling `PetAPI.AddPet``: %v\n", err)
+		fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
+	}
+	// response from `AddPet`: Pet
+	fmt.Fprintf(os.Stdout, "Response from `PetAPI.AddPet`: %v\n", resp)
+}
+```
+
+### Path Parameters
+
+
+
+### Other Parameters
+
+Other parameters are passed through a pointer to a apiAddPetRequest struct via the builder pattern
+
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **pet** | [**Pet**](Pet.md) | Pet object that needs to be added to the store | 
+
+### Return type
+
+[**Pet**](Pet.md)
+
+### Authorization
+
+[petstore_auth](../README.md#petstore_auth)
+
+### HTTP request headers
+
+- **Content-Type**: application/json, application/xml
+- **Accept**: application/xml, application/json
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints)
+[[Back to Model list]](../README.md#documentation-for-models)
+[[Back to README]](../README.md)
+

samples/openapi3/client/petstore/go/go-petstore-aws-signature/docs/Tag.md

@@ -0,0 +1,82 @@
+# Tag
+
+## Properties
+
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**Id** | Pointer to **int64** |  | [optional] 
+**Name** | Pointer to **string** |  | [optional] 
+
+## Methods
+
+### NewTag
+
+`func NewTag() *Tag`
+
+NewTag instantiates a new Tag object
+This constructor will assign default values to properties that have it defined,
+and makes sure properties required by API are set, but the set of arguments
+will change when the set of required properties is changed
+
+### NewTagWithDefaults
+
+`func NewTagWithDefaults() *Tag`
+
+NewTagWithDefaults instantiates a new Tag object
+This constructor will only assign default values to properties that have it defined,
+but it doesn't guarantee that properties required by API are set
+
+### GetId
+
+`func (o *Tag) GetId() int64`
+
+GetId returns the Id field if non-nil, zero value otherwise.
+
+### GetIdOk
+
+`func (o *Tag) GetIdOk() (*int64, bool)`
+
+GetIdOk returns a tuple with the Id field if it's non-nil, zero value otherwise
+and a boolean to check if the value has been set.
+
+### SetId
+
+`func (o *Tag) SetId(v int64)`
+
+SetId sets Id field to given value.
+
+### HasId
+
+`func (o *Tag) HasId() bool`
+
+HasId returns a boolean if a field has been set.
+
+### GetName
+
+`func (o *Tag) GetName() string`
+
+GetName returns the Name field if non-nil, zero value otherwise.
+
+### GetNameOk
+
+`func (o *Tag) GetNameOk() (*string, bool)`
+
+GetNameOk returns a tuple with the Name field if it's non-nil, zero value otherwise
+and a boolean to check if the value has been set.
+
+### SetName
+
+`func (o *Tag) SetName(v string)`
+
+SetName sets Name field to given value.
+
+### HasName
+
+`func (o *Tag) HasName() bool`
+
+HasName returns a boolean if a field has been set.
+
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
+

samples/openapi3/client/petstore/go/go-petstore-aws-signature/git_push.sh

@@ -0,0 +1,57 @@
+#!/bin/sh
+# ref: https://help.github.com/articles/adding-an-existing-project-to-github-using-the-command-line/
+#
+# Usage example: /bin/sh ./git_push.sh wing328 openapi-petstore-perl "minor update" "gitlab.com"
+
+git_user_id=$1
+git_repo_id=$2
+release_note=$3
+git_host=$4
+
+if [ "$git_host" = "" ]; then
+    git_host="github.com"
+    echo "[INFO] No command line input provided. Set \$git_host to $git_host"
+fi
+
+if [ "$git_user_id" = "" ]; then
+    git_user_id="GIT_USER_ID"
+    echo "[INFO] No command line input provided. Set \$git_user_id to $git_user_id"
+fi
+
+if [ "$git_repo_id" = "" ]; then
+    git_repo_id="GIT_REPO_ID"
+    echo "[INFO] No command line input provided. Set \$git_repo_id to $git_repo_id"
+fi
+
+if [ "$release_note" = "" ]; then
+    release_note="Minor update"
+    echo "[INFO] No command line input provided. Set \$release_note to $release_note"
+fi
+
+# Initialize the local directory as a Git repository
+git init
+
+# Adds the files in the local repository and stages them for commit.
+git add .
+
+# Commits the tracked changes and prepares them to be pushed to a remote repository.
+git commit -m "$release_note"
+
+# Sets the new remote
+git_remote=$(git remote)
+if [ "$git_remote" = "" ]; then # git remote not defined
+
+    if [ "$GIT_TOKEN" = "" ]; then
+        echo "[INFO] \$GIT_TOKEN (environment variable) is not set. Using the git credential in your environment."
+        git remote add origin https://${git_host}/${git_user_id}/${git_repo_id}.git
+    else
+        git remote add origin https://${git_user_id}:"${GIT_TOKEN}"@${git_host}/${git_user_id}/${git_repo_id}.git
+    fi
+
+fi
+
+git pull origin master
+
+# Pushes (Forces) the changes in the local repository up to the remote repository
+echo "Git pushing to https://${git_host}/${git_user_id}/${git_repo_id}.git"
+git push origin master 2>&1 | grep -v 'To https'

samples/openapi3/client/petstore/go/go-petstore-aws-signature/go.mod

@@ -0,0 +1,9 @@
+module github.com/GIT_USER_ID/GIT_REPO_ID
+
+go 1.23
+
+require (
+	github.com/stretchr/testify v1.10.0
+	golang.org/x/oauth2 v0.27.0
+	github.com/aws/aws-sdk-go-v2 v1.37.0
+)

samples/openapi3/client/petstore/go/go-petstore-aws-signature/go.sum

@@ -0,0 +1,13 @@
+cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+github.com/golang/protobuf v1.2.0 h1:P3YflyNX/ehuJFLhxviNdFxQPkGK5cDcApsge1SqnvM=
+github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
+golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
+golang.org/x/net v0.0.0-20190108225652-1e06a53dbb7e h1:bRhVy7zSSasaqNksaRZiA5EEI+Ei4I1nO5Jh72wfHlg=
+golang.org/x/net v0.0.0-20190108225652-1e06a53dbb7e/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
+golang.org/x/oauth2 v0.27.0 h1:da9Vo7/tDv5RH/7nZDz1eMGS/q1Vv1N/7FCrBhI9I3M=
+golang.org/x/oauth2 v0.27.0/go.mod h1:onh5ek6nERTohokkhCD/y2cV4Do3fxFHFuAejCkRWT8=
+golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4 h1:YUO/7uOKsKeq9UokNS62b8FYywz3ker1l1vDZRCRefw=
+golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+google.golang.org/appengine v1.4.0 h1:/wp5JvzpHIxhs/dumFmF7BXTf3Z+dd4uXta4kVyO508=
+google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=

samples/openapi3/client/petstore/go/go-petstore-aws-signature/model_category.go

@@ -0,0 +1,192 @@
+/*
+OpenAPI Petstore
+
+This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+
+API version: 1.0.0
+*/
+
+// Code generated by OpenAPI Generator (https://openapi-generator.tech); DO NOT EDIT.
+
+package petstore
+
+import (
+	"encoding/json"
+)
+
+// checks if the Category type satisfies the MappedNullable interface at compile time
+var _ MappedNullable = &Category{}
+
+// Category A category for a pet
+type Category struct {
+	Id *int64 `json:"id,omitempty"`
+	Name *string `json:"name,omitempty" validate:"regexp=^[a-zA-Z0-9]+[a-zA-Z0-9\\\\.\\\\-_]*[a-zA-Z0-9]+$"`
+	AdditionalProperties map[string]interface{}
+}
+
+type _Category Category
+
+// NewCategory instantiates a new Category object
+// This constructor will assign default values to properties that have it defined,
+// and makes sure properties required by API are set, but the set of arguments
+// will change when the set of required properties is changed
+func NewCategory() *Category {
+	this := Category{}
+	return &this
+}
+
+// NewCategoryWithDefaults instantiates a new Category object
+// This constructor will only assign default values to properties that have it defined,
+// but it doesn't guarantee that properties required by API are set
+func NewCategoryWithDefaults() *Category {
+	this := Category{}
+	return &this
+}
+
+// GetId returns the Id field value if set, zero value otherwise.
+func (o *Category) GetId() int64 {
+	if o == nil || IsNil(o.Id) {
+		var ret int64
+		return ret
+	}
+	return *o.Id
+}
+
+// GetIdOk returns a tuple with the Id field value if set, nil otherwise
+// and a boolean to check if the value has been set.
+func (o *Category) GetIdOk() (*int64, bool) {
+	if o == nil || IsNil(o.Id) {
+		return nil, false
+	}
+	return o.Id, true
+}
+
+// HasId returns a boolean if a field has been set.
+func (o *Category) HasId() bool {
+	if o != nil && !IsNil(o.Id) {
+		return true
+	}
+
+	return false
+}
+
+// SetId gets a reference to the given int64 and assigns it to the Id field.
+func (o *Category) SetId(v int64) {
+	o.Id = &v
+}
+
+// GetName returns the Name field value if set, zero value otherwise.
+func (o *Category) GetName() string {
+	if o == nil || IsNil(o.Name) {
+		var ret string
+		return ret
+	}
+	return *o.Name
+}
+
+// GetNameOk returns a tuple with the Name field value if set, nil otherwise
+// and a boolean to check if the value has been set.
+func (o *Category) GetNameOk() (*string, bool) {
+	if o == nil || IsNil(o.Name) {
+		return nil, false
+	}
+	return o.Name, true
+}
+
+// HasName returns a boolean if a field has been set.
+func (o *Category) HasName() bool {
+	if o != nil && !IsNil(o.Name) {
+		return true
+	}
+
+	return false
+}
+
+// SetName gets a reference to the given string and assigns it to the Name field.
+func (o *Category) SetName(v string) {
+	o.Name = &v
+}
+
+func (o Category) MarshalJSON() ([]byte, error) {
+	toSerialize,err := o.ToMap()
+	if err != nil {
+		return []byte{}, err
+	}
+	return json.Marshal(toSerialize)
+}
+
+func (o Category) ToMap() (map[string]interface{}, error) {
+	toSerialize := map[string]interface{}{}
+	if !IsNil(o.Id) {
+		toSerialize["id"] = o.Id
+	}
+	if !IsNil(o.Name) {
+		toSerialize["name"] = o.Name
+	}
+
+	for key, value := range o.AdditionalProperties {
+		toSerialize[key] = value
+	}
+
+	return toSerialize, nil
+}
+
+func (o *Category) UnmarshalJSON(data []byte) (err error) {
+	varCategory := _Category{}
+
+	err = json.Unmarshal(data, &varCategory)
+
+	if err != nil {
+		return err
+	}
+
+	*o = Category(varCategory)
+
+	additionalProperties := make(map[string]interface{})
+
+	if err = json.Unmarshal(data, &additionalProperties); err == nil {
+		delete(additionalProperties, "id")
+		delete(additionalProperties, "name")
+		o.AdditionalProperties = additionalProperties
+	}
+
+	return err
+}
+
+type NullableCategory struct {
+	value *Category
+	isSet bool
+}
+
+func (v NullableCategory) Get() *Category {
+	return v.value
+}
+
+func (v *NullableCategory) Set(val *Category) {
+	v.value = val
+	v.isSet = true
+}
+
+func (v NullableCategory) IsSet() bool {
+	return v.isSet
+}
+
+func (v *NullableCategory) Unset() {
+	v.value = nil
+	v.isSet = false
+}
+
+func NewNullableCategory(val *Category) *NullableCategory {
+	return &NullableCategory{value: val, isSet: true}
+}
+
+func (v NullableCategory) MarshalJSON() ([]byte, error) {
+	return json.Marshal(v.value)
+}
+
+func (v *NullableCategory) UnmarshalJSON(src []byte) error {
+	v.isSet = true
+	return json.Unmarshal(src, &v.value)
+}
+
+

samples/openapi3/client/petstore/go/go-petstore-aws-signature/model_pet.go

@@ -0,0 +1,350 @@
+/*
+OpenAPI Petstore
+
+This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+
+API version: 1.0.0
+*/
+
+// Code generated by OpenAPI Generator (https://openapi-generator.tech); DO NOT EDIT.
+
+package petstore
+
+import (
+	"encoding/json"
+	"fmt"
+)
+
+// checks if the Pet type satisfies the MappedNullable interface at compile time
+var _ MappedNullable = &Pet{}
+
+// Pet A pet for sale in the pet store
+type Pet struct {
+	Id *int64 `json:"id,omitempty"`
+	Category *Category `json:"category,omitempty"`
+	Name string `json:"name"`
+	PhotoUrls []string `json:"photoUrls"`
+	Tags []Tag `json:"tags,omitempty"`
+	// pet status in the store
+	// Deprecated
+	Status *string `json:"status,omitempty"`
+	AdditionalProperties map[string]interface{}
+}
+
+type _Pet Pet
+
+// NewPet instantiates a new Pet object
+// This constructor will assign default values to properties that have it defined,
+// and makes sure properties required by API are set, but the set of arguments
+// will change when the set of required properties is changed
+func NewPet(name string, photoUrls []string) *Pet {
+	this := Pet{}
+	this.Name = name
+	this.PhotoUrls = photoUrls
+	return &this
+}
+
+// NewPetWithDefaults instantiates a new Pet object
+// This constructor will only assign default values to properties that have it defined,
+// but it doesn't guarantee that properties required by API are set
+func NewPetWithDefaults() *Pet {
+	this := Pet{}
+	return &this
+}
+
+// GetId returns the Id field value if set, zero value otherwise.
+func (o *Pet) GetId() int64 {
+	if o == nil || IsNil(o.Id) {
+		var ret int64
+		return ret
+	}
+	return *o.Id
+}
+
+// GetIdOk returns a tuple with the Id field value if set, nil otherwise
+// and a boolean to check if the value has been set.
+func (o *Pet) GetIdOk() (*int64, bool) {
+	if o == nil || IsNil(o.Id) {
+		return nil, false
+	}
+	return o.Id, true
+}
+
+// HasId returns a boolean if a field has been set.
+func (o *Pet) HasId() bool {
+	if o != nil && !IsNil(o.Id) {
+		return true
+	}
+
+	return false
+}
+
+// SetId gets a reference to the given int64 and assigns it to the Id field.
+func (o *Pet) SetId(v int64) {
+	o.Id = &v
+}
+
+// GetCategory returns the Category field value if set, zero value otherwise.
+func (o *Pet) GetCategory() Category {
+	if o == nil || IsNil(o.Category) {
+		var ret Category
+		return ret
+	}
+	return *o.Category
+}
+
+// GetCategoryOk returns a tuple with the Category field value if set, nil otherwise
+// and a boolean to check if the value has been set.
+func (o *Pet) GetCategoryOk() (*Category, bool) {
+	if o == nil || IsNil(o.Category) {
+		return nil, false
+	}
+	return o.Category, true
+}
+
+// HasCategory returns a boolean if a field has been set.
+func (o *Pet) HasCategory() bool {
+	if o != nil && !IsNil(o.Category) {
+		return true
+	}
+
+	return false
+}
+
+// SetCategory gets a reference to the given Category and assigns it to the Category field.
+func (o *Pet) SetCategory(v Category) {
+	o.Category = &v
+}
+
+// GetName returns the Name field value
+func (o *Pet) GetName() string {
+	if o == nil {
+		var ret string
+		return ret
+	}
+
+	return o.Name
+}
+
+// GetNameOk returns a tuple with the Name field value
+// and a boolean to check if the value has been set.
+func (o *Pet) GetNameOk() (*string, bool) {
+	if o == nil {
+		return nil, false
+	}
+	return &o.Name, true
+}
+
+// SetName sets field value
+func (o *Pet) SetName(v string) {
+	o.Name = v
+}
+
+// GetPhotoUrls returns the PhotoUrls field value
+func (o *Pet) GetPhotoUrls() []string {
+	if o == nil {
+		var ret []string
+		return ret
+	}
+
+	return o.PhotoUrls
+}
+
+// GetPhotoUrlsOk returns a tuple with the PhotoUrls field value
+// and a boolean to check if the value has been set.
+func (o *Pet) GetPhotoUrlsOk() ([]string, bool) {
+	if o == nil {
+		return nil, false
+	}
+	return o.PhotoUrls, true
+}
+
+// SetPhotoUrls sets field value
+func (o *Pet) SetPhotoUrls(v []string) {
+	o.PhotoUrls = v
+}
+
+// GetTags returns the Tags field value if set, zero value otherwise.
+func (o *Pet) GetTags() []Tag {
+	if o == nil || IsNil(o.Tags) {
+		var ret []Tag
+		return ret
+	}
+	return o.Tags
+}
+
+// GetTagsOk returns a tuple with the Tags field value if set, nil otherwise
+// and a boolean to check if the value has been set.
+func (o *Pet) GetTagsOk() ([]Tag, bool) {
+	if o == nil || IsNil(o.Tags) {
+		return nil, false
+	}
+	return o.Tags, true
+}
+
+// HasTags returns a boolean if a field has been set.
+func (o *Pet) HasTags() bool {
+	if o != nil && !IsNil(o.Tags) {
+		return true
+	}
+
+	return false
+}
+
+// SetTags gets a reference to the given []Tag and assigns it to the Tags field.
+func (o *Pet) SetTags(v []Tag) {
+	o.Tags = v
+}
+
+// GetStatus returns the Status field value if set, zero value otherwise.
+// Deprecated
+func (o *Pet) GetStatus() string {
+	if o == nil || IsNil(o.Status) {
+		var ret string
+		return ret
+	}
+	return *o.Status
+}
+
+// GetStatusOk returns a tuple with the Status field value if set, nil otherwise
+// and a boolean to check if the value has been set.
+// Deprecated
+func (o *Pet) GetStatusOk() (*string, bool) {
+	if o == nil || IsNil(o.Status) {
+		return nil, false
+	}
+	return o.Status, true
+}
+
+// HasStatus returns a boolean if a field has been set.
+func (o *Pet) HasStatus() bool {
+	if o != nil && !IsNil(o.Status) {
+		return true
+	}
+
+	return false
+}
+
+// SetStatus gets a reference to the given string and assigns it to the Status field.
+// Deprecated
+func (o *Pet) SetStatus(v string) {
+	o.Status = &v
+}
+
+func (o Pet) MarshalJSON() ([]byte, error) {
+	toSerialize,err := o.ToMap()
+	if err != nil {
+		return []byte{}, err
+	}
+	return json.Marshal(toSerialize)
+}
+
+func (o Pet) ToMap() (map[string]interface{}, error) {
+	toSerialize := map[string]interface{}{}
+	if !IsNil(o.Id) {
+		toSerialize["id"] = o.Id
+	}
+	if !IsNil(o.Category) {
+		toSerialize["category"] = o.Category
+	}
+	toSerialize["name"] = o.Name
+	toSerialize["photoUrls"] = o.PhotoUrls
+	if !IsNil(o.Tags) {
+		toSerialize["tags"] = o.Tags
+	}
+	if !IsNil(o.Status) {
+		toSerialize["status"] = o.Status
+	}
+
+	for key, value := range o.AdditionalProperties {
+		toSerialize[key] = value
+	}
+
+	return toSerialize, nil
+}
+
+func (o *Pet) UnmarshalJSON(data []byte) (err error) {
+	// This validates that all required properties are included in the JSON object
+	// by unmarshalling the object into a generic map with string keys and checking
+	// that every required field exists as a key in the generic map.
+	requiredProperties := []string{
+		"name",
+		"photoUrls",
+	}
+
+	allProperties := make(map[string]interface{})
+
+	err = json.Unmarshal(data, &allProperties)
+
+	if err != nil {
+		return err;
+	}
+
+	for _, requiredProperty := range(requiredProperties) {
+		if _, exists := allProperties[requiredProperty]; !exists {
+			return fmt.Errorf("no value given for required property %v", requiredProperty)
+		}
+	}
+
+	varPet := _Pet{}
+
+	err = json.Unmarshal(data, &varPet)
+
+	if err != nil {
+		return err
+	}
+
+	*o = Pet(varPet)
+
+	additionalProperties := make(map[string]interface{})
+
+	if err = json.Unmarshal(data, &additionalProperties); err == nil {
+		delete(additionalProperties, "id")
+		delete(additionalProperties, "category")
+		delete(additionalProperties, "name")
+		delete(additionalProperties, "photoUrls")
+		delete(additionalProperties, "tags")
+		delete(additionalProperties, "status")
+		o.AdditionalProperties = additionalProperties
+	}
+
+	return err
+}
+
+type NullablePet struct {
+	value *Pet
+	isSet bool
+}
+
+func (v NullablePet) Get() *Pet {
+	return v.value
+}
+
+func (v *NullablePet) Set(val *Pet) {
+	v.value = val
+	v.isSet = true
+}
+
+func (v NullablePet) IsSet() bool {
+	return v.isSet
+}
+
+func (v *NullablePet) Unset() {
+	v.value = nil
+	v.isSet = false
+}
+
+func NewNullablePet(val *Pet) *NullablePet {
+	return &NullablePet{value: val, isSet: true}
+}
+
+func (v NullablePet) MarshalJSON() ([]byte, error) {
+	return json.Marshal(v.value)
+}
+
+func (v *NullablePet) UnmarshalJSON(src []byte) error {
+	v.isSet = true
+	return json.Unmarshal(src, &v.value)
+}
+
+

samples/openapi3/client/petstore/go/go-petstore-aws-signature/model_tag.go

@@ -0,0 +1,192 @@
+/*
+OpenAPI Petstore
+
+This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+
+API version: 1.0.0
+*/
+
+// Code generated by OpenAPI Generator (https://openapi-generator.tech); DO NOT EDIT.
+
+package petstore
+
+import (
+	"encoding/json"
+)
+
+// checks if the Tag type satisfies the MappedNullable interface at compile time
+var _ MappedNullable = &Tag{}
+
+// Tag A tag for a pet
+type Tag struct {
+	Id *int64 `json:"id,omitempty"`
+	Name *string `json:"name,omitempty"`
+	AdditionalProperties map[string]interface{}
+}
+
+type _Tag Tag
+
+// NewTag instantiates a new Tag object
+// This constructor will assign default values to properties that have it defined,
+// and makes sure properties required by API are set, but the set of arguments
+// will change when the set of required properties is changed
+func NewTag() *Tag {
+	this := Tag{}
+	return &this
+}
+
+// NewTagWithDefaults instantiates a new Tag object
+// This constructor will only assign default values to properties that have it defined,
+// but it doesn't guarantee that properties required by API are set
+func NewTagWithDefaults() *Tag {
+	this := Tag{}
+	return &this
+}
+
+// GetId returns the Id field value if set, zero value otherwise.
+func (o *Tag) GetId() int64 {
+	if o == nil || IsNil(o.Id) {
+		var ret int64
+		return ret
+	}
+	return *o.Id
+}
+
+// GetIdOk returns a tuple with the Id field value if set, nil otherwise
+// and a boolean to check if the value has been set.
+func (o *Tag) GetIdOk() (*int64, bool) {
+	if o == nil || IsNil(o.Id) {
+		return nil, false
+	}
+	return o.Id, true
+}
+
+// HasId returns a boolean if a field has been set.
+func (o *Tag) HasId() bool {
+	if o != nil && !IsNil(o.Id) {
+		return true
+	}
+
+	return false
+}
+
+// SetId gets a reference to the given int64 and assigns it to the Id field.
+func (o *Tag) SetId(v int64) {
+	o.Id = &v
+}
+
+// GetName returns the Name field value if set, zero value otherwise.
+func (o *Tag) GetName() string {
+	if o == nil || IsNil(o.Name) {
+		var ret string
+		return ret
+	}
+	return *o.Name
+}
+
+// GetNameOk returns a tuple with the Name field value if set, nil otherwise
+// and a boolean to check if the value has been set.
+func (o *Tag) GetNameOk() (*string, bool) {
+	if o == nil || IsNil(o.Name) {
+		return nil, false
+	}
+	return o.Name, true
+}
+
+// HasName returns a boolean if a field has been set.
+func (o *Tag) HasName() bool {
+	if o != nil && !IsNil(o.Name) {
+		return true
+	}
+
+	return false
+}
+
+// SetName gets a reference to the given string and assigns it to the Name field.
+func (o *Tag) SetName(v string) {
+	o.Name = &v
+}
+
+func (o Tag) MarshalJSON() ([]byte, error) {
+	toSerialize,err := o.ToMap()
+	if err != nil {
+		return []byte{}, err
+	}
+	return json.Marshal(toSerialize)
+}
+
+func (o Tag) ToMap() (map[string]interface{}, error) {
+	toSerialize := map[string]interface{}{}
+	if !IsNil(o.Id) {
+		toSerialize["id"] = o.Id
+	}
+	if !IsNil(o.Name) {
+		toSerialize["name"] = o.Name
+	}
+
+	for key, value := range o.AdditionalProperties {
+		toSerialize[key] = value
+	}
+
+	return toSerialize, nil
+}
+
+func (o *Tag) UnmarshalJSON(data []byte) (err error) {
+	varTag := _Tag{}
+
+	err = json.Unmarshal(data, &varTag)
+
+	if err != nil {
+		return err
+	}
+
+	*o = Tag(varTag)
+
+	additionalProperties := make(map[string]interface{})
+
+	if err = json.Unmarshal(data, &additionalProperties); err == nil {
+		delete(additionalProperties, "id")
+		delete(additionalProperties, "name")
+		o.AdditionalProperties = additionalProperties
+	}
+
+	return err
+}
+
+type NullableTag struct {
+	value *Tag
+	isSet bool
+}
+
+func (v NullableTag) Get() *Tag {
+	return v.value
+}
+
+func (v *NullableTag) Set(val *Tag) {
+	v.value = val
+	v.isSet = true
+}
+
+func (v NullableTag) IsSet() bool {
+	return v.isSet
+}
+
+func (v *NullableTag) Unset() {
+	v.value = nil
+	v.isSet = false
+}
+
+func NewNullableTag(val *Tag) *NullableTag {
+	return &NullableTag{value: val, isSet: true}
+}
+
+func (v NullableTag) MarshalJSON() ([]byte, error) {
+	return json.Marshal(v.value)
+}
+
+func (v *NullableTag) UnmarshalJSON(src []byte) error {
+	v.isSet = true
+	return json.Unmarshal(src, &v.value)
+}
+
+

samples/openapi3/client/petstore/go/go-petstore-aws-signature/response.go

@@ -0,0 +1,47 @@
+/*
+OpenAPI Petstore
+
+This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+
+API version: 1.0.0
+*/
+
+// Code generated by OpenAPI Generator (https://openapi-generator.tech); DO NOT EDIT.
+
+package petstore
+
+import (
+	"net/http"
+)
+
+// APIResponse stores the API response returned by the server.
+type APIResponse struct {
+	*http.Response `json:"-"`
+	Message        string `json:"message,omitempty"`
+	// Operation is the name of the OpenAPI operation.
+	Operation string `json:"operation,omitempty"`
+	// RequestURL is the request URL. This value is always available, even if the
+	// embedded *http.Response is nil.
+	RequestURL string `json:"url,omitempty"`
+	// Method is the HTTP method used for the request.  This value is always
+	// available, even if the embedded *http.Response is nil.
+	Method string `json:"method,omitempty"`
+	// Payload holds the contents of the response body (which may be nil or empty).
+	// This is provided here as the raw response.Body() reader will have already
+	// been drained.
+	Payload []byte `json:"-"`
+}
+
+// NewAPIResponse returns a new APIResponse object.
+func NewAPIResponse(r *http.Response) *APIResponse {
+
+	response := &APIResponse{Response: r}
+	return response
+}
+
+// NewAPIResponseWithError returns a new APIResponse object with the provided error message.
+func NewAPIResponseWithError(errorMessage string) *APIResponse {
+
+	response := &APIResponse{Message: errorMessage}
+	return response
+}

samples/openapi3/client/petstore/go/go-petstore-aws-signature/test/api_pet_test.go

@@ -0,0 +1,37 @@
+/*
+OpenAPI Petstore
+
+Testing PetAPIService
+
+*/
+
+// Code generated by OpenAPI Generator (https://openapi-generator.tech);
+
+package petstore
+
+import (
+	"context"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+	"testing"
+	openapiclient "github.com/GIT_USER_ID/GIT_REPO_ID"
+)
+
+func Test_petstore_PetAPIService(t *testing.T) {
+
+	configuration := openapiclient.NewConfiguration()
+	apiClient := openapiclient.NewAPIClient(configuration)
+
+	t.Run("Test PetAPIService AddPet", func(t *testing.T) {
+
+		t.Skip("skip test")  // remove to run test
+
+		resp, httpRes, err := apiClient.PetAPI.AddPet(context.Background()).Execute()
+
+		require.Nil(t, err)
+		require.NotNil(t, resp)
+		assert.Equal(t, 200, httpRes.StatusCode)
+
+	})
+
+}

samples/openapi3/client/petstore/go/go-petstore-aws-signature/utils.go

@@ -0,0 +1,361 @@
+/*
+OpenAPI Petstore
+
+This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+
+API version: 1.0.0
+*/
+
+// Code generated by OpenAPI Generator (https://openapi-generator.tech); DO NOT EDIT.
+
+package petstore
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"reflect"
+	"time"
+)
+
+// PtrBool is a helper routine that returns a pointer to given boolean value.
+func PtrBool(v bool) *bool { return &v }
+
+// PtrInt is a helper routine that returns a pointer to given integer value.
+func PtrInt(v int) *int { return &v }
+
+// PtrInt32 is a helper routine that returns a pointer to given integer value.
+func PtrInt32(v int32) *int32 { return &v }
+
+// PtrInt64 is a helper routine that returns a pointer to given integer value.
+func PtrInt64(v int64) *int64 { return &v }
+
+// PtrFloat32 is a helper routine that returns a pointer to given float value.
+func PtrFloat32(v float32) *float32 { return &v }
+
+// PtrFloat64 is a helper routine that returns a pointer to given float value.
+func PtrFloat64(v float64) *float64 { return &v }
+
+// PtrString is a helper routine that returns a pointer to given string value.
+func PtrString(v string) *string { return &v }
+
+// PtrTime is helper routine that returns a pointer to given Time value.
+func PtrTime(v time.Time) *time.Time { return &v }
+
+type NullableBool struct {
+	value *bool
+	isSet bool
+}
+
+func (v NullableBool) Get() *bool {
+	return v.value
+}
+
+func (v *NullableBool) Set(val *bool) {
+	v.value = val
+	v.isSet = true
+}
+
+func (v NullableBool) IsSet() bool {
+	return v.isSet
+}
+
+func (v *NullableBool) Unset() {
+	v.value = nil
+	v.isSet = false
+}
+
+func NewNullableBool(val *bool) *NullableBool {
+	return &NullableBool{value: val, isSet: true}
+}
+
+func (v NullableBool) MarshalJSON() ([]byte, error) {
+	return json.Marshal(v.value)
+}
+
+func (v *NullableBool) UnmarshalJSON(src []byte) error {
+	v.isSet = true
+	return json.Unmarshal(src, &v.value)
+}
+
+type NullableInt struct {
+	value *int
+	isSet bool
+}
+
+func (v NullableInt) Get() *int {
+	return v.value
+}
+
+func (v *NullableInt) Set(val *int) {
+	v.value = val
+	v.isSet = true
+}
+
+func (v NullableInt) IsSet() bool {
+	return v.isSet
+}
+
+func (v *NullableInt) Unset() {
+	v.value = nil
+	v.isSet = false
+}
+
+func NewNullableInt(val *int) *NullableInt {
+	return &NullableInt{value: val, isSet: true}
+}
+
+func (v NullableInt) MarshalJSON() ([]byte, error) {
+	return json.Marshal(v.value)
+}
+
+func (v *NullableInt) UnmarshalJSON(src []byte) error {
+	v.isSet = true
+	return json.Unmarshal(src, &v.value)
+}
+
+type NullableInt32 struct {
+	value *int32
+	isSet bool
+}
+
+func (v NullableInt32) Get() *int32 {
+	return v.value
+}
+
+func (v *NullableInt32) Set(val *int32) {
+	v.value = val
+	v.isSet = true
+}
+
+func (v NullableInt32) IsSet() bool {
+	return v.isSet
+}
+
+func (v *NullableInt32) Unset() {
+	v.value = nil
+	v.isSet = false
+}
+
+func NewNullableInt32(val *int32) *NullableInt32 {
+	return &NullableInt32{value: val, isSet: true}
+}
+
+func (v NullableInt32) MarshalJSON() ([]byte, error) {
+	return json.Marshal(v.value)
+}
+
+func (v *NullableInt32) UnmarshalJSON(src []byte) error {
+	v.isSet = true
+	return json.Unmarshal(src, &v.value)
+}
+
+type NullableInt64 struct {
+	value *int64
+	isSet bool
+}
+
+func (v NullableInt64) Get() *int64 {
+	return v.value
+}
+
+func (v *NullableInt64) Set(val *int64) {
+	v.value = val
+	v.isSet = true
+}
+
+func (v NullableInt64) IsSet() bool {
+	return v.isSet
+}
+
+func (v *NullableInt64) Unset() {
+	v.value = nil
+	v.isSet = false
+}
+
+func NewNullableInt64(val *int64) *NullableInt64 {
+	return &NullableInt64{value: val, isSet: true}
+}
+
+func (v NullableInt64) MarshalJSON() ([]byte, error) {
+	return json.Marshal(v.value)
+}
+
+func (v *NullableInt64) UnmarshalJSON(src []byte) error {
+	v.isSet = true
+	return json.Unmarshal(src, &v.value)
+}
+
+type NullableFloat32 struct {
+	value *float32
+	isSet bool
+}
+
+func (v NullableFloat32) Get() *float32 {
+	return v.value
+}
+
+func (v *NullableFloat32) Set(val *float32) {
+	v.value = val
+	v.isSet = true
+}
+
+func (v NullableFloat32) IsSet() bool {
+	return v.isSet
+}
+
+func (v *NullableFloat32) Unset() {
+	v.value = nil
+	v.isSet = false
+}
+
+func NewNullableFloat32(val *float32) *NullableFloat32 {
+	return &NullableFloat32{value: val, isSet: true}
+}
+
+func (v NullableFloat32) MarshalJSON() ([]byte, error) {
+	return json.Marshal(v.value)
+}
+
+func (v *NullableFloat32) UnmarshalJSON(src []byte) error {
+	v.isSet = true
+	return json.Unmarshal(src, &v.value)
+}
+
+type NullableFloat64 struct {
+	value *float64
+	isSet bool
+}
+
+func (v NullableFloat64) Get() *float64 {
+	return v.value
+}
+
+func (v *NullableFloat64) Set(val *float64) {
+	v.value = val
+	v.isSet = true
+}
+
+func (v NullableFloat64) IsSet() bool {
+	return v.isSet
+}
+
+func (v *NullableFloat64) Unset() {
+	v.value = nil
+	v.isSet = false
+}
+
+func NewNullableFloat64(val *float64) *NullableFloat64 {
+	return &NullableFloat64{value: val, isSet: true}
+}
+
+func (v NullableFloat64) MarshalJSON() ([]byte, error) {
+	return json.Marshal(v.value)
+}
+
+func (v *NullableFloat64) UnmarshalJSON(src []byte) error {
+	v.isSet = true
+	return json.Unmarshal(src, &v.value)
+}
+
+type NullableString struct {
+	value *string
+	isSet bool
+}
+
+func (v NullableString) Get() *string {
+	return v.value
+}
+
+func (v *NullableString) Set(val *string) {
+	v.value = val
+	v.isSet = true
+}
+
+func (v NullableString) IsSet() bool {
+	return v.isSet
+}
+
+func (v *NullableString) Unset() {
+	v.value = nil
+	v.isSet = false
+}
+
+func NewNullableString(val *string) *NullableString {
+	return &NullableString{value: val, isSet: true}
+}
+
+func (v NullableString) MarshalJSON() ([]byte, error) {
+	return json.Marshal(v.value)
+}
+
+func (v *NullableString) UnmarshalJSON(src []byte) error {
+	v.isSet = true
+	return json.Unmarshal(src, &v.value)
+}
+
+type NullableTime struct {
+	value *time.Time
+	isSet bool
+}
+
+func (v NullableTime) Get() *time.Time {
+	return v.value
+}
+
+func (v *NullableTime) Set(val *time.Time) {
+	v.value = val
+	v.isSet = true
+}
+
+func (v NullableTime) IsSet() bool {
+	return v.isSet
+}
+
+func (v *NullableTime) Unset() {
+	v.value = nil
+	v.isSet = false
+}
+
+func NewNullableTime(val *time.Time) *NullableTime {
+	return &NullableTime{value: val, isSet: true}
+}
+
+func (v NullableTime) MarshalJSON() ([]byte, error) {
+	return json.Marshal(v.value)
+}
+
+func (v *NullableTime) UnmarshalJSON(src []byte) error {
+	v.isSet = true
+	return json.Unmarshal(src, &v.value)
+}
+
+// IsNil checks if an input is nil
+func IsNil(i interface{}) bool {
+	if i == nil {
+		return true
+	}
+	switch reflect.TypeOf(i).Kind() {
+	case reflect.Chan, reflect.Func, reflect.Map, reflect.Ptr, reflect.UnsafePointer, reflect.Interface, reflect.Slice:
+		return reflect.ValueOf(i).IsNil()
+	case reflect.Array:
+		return reflect.ValueOf(i).IsZero()
+	}
+	return false
+}
+
+type MappedNullable interface {
+	ToMap() (map[string]interface{}, error)
+}
+
+// A wrapper for strict JSON decoding
+func newStrictDecoder(data []byte) *json.Decoder {
+	dec := json.NewDecoder(bytes.NewBuffer(data))
+	dec.DisallowUnknownFields()
+	return dec
+}
+
+// Prevent trying to import "fmt"
+func reportError(format string, a ...interface{}) error {
+	return fmt.Errorf(format, a...)
+}