/
models.go
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/
models.go
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package models
import (
"encoding/base64"
"encoding/json"
"io/ioutil"
"net/http"
"net/url"
"strings"
"github.com/aws/aws-lambda-go/events"
cc "github.com/grokify/commonchat"
"github.com/grokify/simplego/net/anyhttp"
fhu "github.com/grokify/simplego/net/fasthttputil"
nhu "github.com/grokify/simplego/net/nethttputil"
"github.com/grokify/simplego/type/stringsutil"
log "github.com/sirupsen/logrus"
"github.com/valyala/fasthttp"
)
const (
QueryParamOutputAdapters = "adapters"
QueryParamInputType = "inputType"
QueryParamOutputType = "outputType"
QueryParamToken = "token"
QueryParamOutputURL = "url"
)
var FixedParams = map[string]int{
QueryParamOutputAdapters: 1,
QueryParamInputType: 2,
QueryParamOutputType: 3,
QueryParamToken: 4,
QueryParamOutputURL: 5}
type RequestParams struct {
InputType string `url:"inputType"`
OutputType string `url:"outputType"`
Token string `url:"token"`
URL string `url:"url"`
}
type MessageBodyType int
const (
JSON MessageBodyType = iota
URLEncoded
URLEncodedJSONPayload
URLEncodedJSONPayloadOrJSON
URLEncodedRails
)
var intervals = [...]string{
"json",
"url_encoded",
"url_encoded_json_payload",
"url_encoded_or_json",
}
type HookData struct {
InputType string `json:"inputType,omitempty"`
InputBody []byte `json:"inputBody,omitempty"`
OutputType string `json:"outputType,omitempty"`
OutputURL string `json:"outputUrl,omitempty"`
OutputNames []string `json:"outputNames,omitempty"`
Token string `json:"token,omitempty"`
InputMessage []byte `json:"inputMessage,omitempty"`
CustomQueryParams url.Values `json:"customParams,omitempty"`
CanonicalMessage cc.Message `json:"canonicalMessage,omitempty"`
}
type hookDataRequest struct {
BodyType MessageBodyType
Headers map[string]string
QueryStringParameters map[string]string
Body string
IsBase64Encoded bool
}
// HookDataFromAwsLambdaEvent converts a Lambda event to
// generic HookData.
func HookDataFromAwsLambdaEvent(bodyType MessageBodyType, awsReq events.APIGatewayProxyRequest, messageBodyType MessageBodyType) HookData {
hookData := newHookDataGeneric(hookDataRequest{
BodyType: bodyType,
Headers: awsReq.Headers,
Body: awsReq.Body,
IsBase64Encoded: awsReq.IsBase64Encoded,
QueryStringParameters: awsReq.QueryStringParameters})
// `application/x-www-form-urlencoded` is currently not supported
// with AWS Lambda because Lambda cannot support URL Query String
// parameterss with this Content-Type.
if messageBodyType == URLEncoded ||
messageBodyType == URLEncodedJSONPayload ||
messageBodyType == URLEncodedRails {
jsonData := awsJsonWrapper{}
err := json.Unmarshal(hookData.InputMessage, &jsonData)
if err == nil {
hookData.InputMessage = []byte(jsonData.Body)
}
}
return hookData
}
type awsJsonWrapper struct {
Body string `json:"body,omitempty"`
}
/*
func HookDataFromEawsyLambdaEvent(bodyType MessageBodyType, eawsyReq *apigatewayproxyevt.Event) HookData {
return newHookDataGeneric(hookDataRequest{
BodyType: bodyType,
Headers: eawsyReq.Headers,
Body: eawsyReq.Body,
IsBase64Encoded: eawsyReq.IsBase64Encoded,
QueryStringParameters: eawsyReq.QueryStringParameters})
}*/
func newHookDataGeneric(req hookDataRequest) HookData {
data := newHookDataForQueryString(req.QueryStringParameters)
data.InputBody = bodyToMessageBytesGeneric(
req.BodyType,
req.Headers,
req.Body,
req.IsBase64Encoded)
return data
}
func GetMapString2Simple(mapSS map[string]string, key string) string {
if value, ok := mapSS[key]; ok {
return value
}
return ""
}
func newHookDataForQueryString(queryStringParameters map[string]string) HookData {
data := HookData{
CustomQueryParams: url.Values{}}
if input, ok := queryStringParameters[QueryParamInputType]; ok {
data.InputType = strings.TrimSpace(input)
}
if output, ok := queryStringParameters[QueryParamOutputType]; ok {
data.OutputType = strings.TrimSpace(output)
}
if url, ok := queryStringParameters[QueryParamOutputURL]; ok {
data.OutputURL = strings.TrimSpace(url)
}
if token, ok := queryStringParameters[QueryParamToken]; ok {
data.Token = strings.TrimSpace(token)
}
if namedOutputs, ok := queryStringParameters[QueryParamOutputAdapters]; ok {
data.OutputNames = stringsutil.SliceCondenseSpace(strings.Split(namedOutputs, ","), true, false)
}
// Include any other parameter as a custom param.
for key, val := range queryStringParameters {
if _, ok := FixedParams[key]; !ok {
data.CustomQueryParams.Add(strings.ToLower(strings.TrimSpace(key)), val)
//data.CustomParams[strings.ToLower(strings.TrimSpace(key))] = val
}
}
return data
}
func HookDataFromAnyHTTPReq(bodyType MessageBodyType, aReq anyhttp.Request) HookData {
return HookData{
InputType: aReq.QueryArgs().GetString(QueryParamInputType),
InputBody: BodyToMessageBytesAnyHTTP(bodyType, aReq),
OutputType: aReq.QueryArgs().GetString(QueryParamOutputType),
OutputURL: aReq.QueryArgs().GetString(QueryParamOutputURL),
Token: aReq.QueryArgs().GetString(QueryParamToken),
CustomQueryParams: aReq.QueryArgs().GetURLValues(),
OutputNames: strings.Split(aReq.QueryArgs().GetString(QueryParamOutputAdapters), ",")}
}
func HookDataFromNetHTTPReq(bodyType MessageBodyType, req *http.Request) HookData {
return HookData{
InputType: nhu.GetReqQueryParam(req, QueryParamInputType),
InputBody: BodyToMessageBytesNetHTTP(bodyType, req),
OutputType: nhu.GetReqQueryParam(req, QueryParamOutputType),
OutputURL: nhu.GetReqQueryParam(req, QueryParamOutputURL),
Token: nhu.GetReqQueryParam(req, QueryParamToken),
OutputNames: nhu.GetSplitReqQueryParam(req, QueryParamOutputAdapters, ",")}
}
func HookDataFromFastHTTPReqCtx(bodyType MessageBodyType, ctx *fasthttp.RequestCtx) HookData {
return HookData{
InputType: fhu.GetReqQueryParam(ctx, QueryParamInputType),
InputBody: BodyToMessageBytesFastHTTP(bodyType, ctx),
OutputType: fhu.GetReqQueryParam(ctx, QueryParamOutputType),
OutputURL: fhu.GetReqQueryParam(ctx, QueryParamOutputURL),
Token: fhu.GetReqQueryParam(ctx, QueryParamToken),
OutputNames: fhu.GetSplitReqQueryParam(ctx, QueryParamOutputAdapters, ",'")}
}
func bodyToMessageBytesGeneric(bodyType MessageBodyType, headers map[string]string, body string, isBase64Encoded bool) []byte {
bodyConverted := []byte("")
if isBase64Encoded {
decoded, err := base64.StdEncoding.DecodeString(body)
if err != nil {
return []byte("")
}
body = string(decoded)
}
switch bodyType {
case URLEncodedJSONPayload:
v, err := url.ParseQuery(body)
if err != nil {
return []byte("")
}
bodyConverted = []byte(v.Get("payload"))
case URLEncodedJSONPayloadOrJSON:
if ct, ok := headers["content-type"]; ok {
ct = strings.TrimSpace(strings.ToLower(ct))
if strings.Index(ct, `application/json`) > -1 {
return []byte(body)
}
}
v, err := url.ParseQuery(body)
if err != nil {
return []byte("")
}
bodyConverted = []byte(v.Get("payload"))
default:
bodyConverted = []byte(body)
}
log.Infof("REQUEST_BODY [%v]", string(bodyConverted))
return bodyConverted
}
func BodyToMessageBytesAnyHTTP(bodyType MessageBodyType, aReq anyhttp.Request) []byte {
switch bodyType {
case URLEncodedJSONPayload:
if err := aReq.ParseForm(); err != nil {
return []byte("")
}
return aReq.PostArgs().GetBytes("payload")
case URLEncodedJSONPayloadOrJSON:
ct := strings.TrimSpace(strings.ToLower(aReq.HeaderString("Content-Type")))
if strings.Index(ct, `application/json`) > -1 {
bytes, err := aReq.PostBody()
if err != nil {
return []byte("")
}
return bytes
}
if err := aReq.ParseForm(); err != nil {
return []byte("")
}
return aReq.PostArgs().GetBytes("payload")
//return []byte(req.Form.Get("payload"))
default:
bytes, err := aReq.PostBody()
if err != nil {
return []byte("")
}
return bytes
}
}
func BodyToMessageBytesNetHTTP(bodyType MessageBodyType, req *http.Request) []byte {
switch bodyType {
case URLEncodedJSONPayload:
return []byte(req.Form.Get("payload"))
case URLEncodedJSONPayloadOrJSON:
ct := strings.TrimSpace(strings.ToLower(req.Header.Get("Content-Type")))
if strings.Index(ct, `application/json`) > -1 {
bytes, err := ioutil.ReadAll(req.Body)
if err != nil {
return []byte("")
}
return bytes
}
return []byte(req.Form.Get("payload"))
default:
bytes, err := ioutil.ReadAll(req.Body)
if err != nil {
return []byte("")
}
return bytes
}
}
func BodyToMessageBytesFastHTTP(bodyType MessageBodyType, ctx *fasthttp.RequestCtx) []byte {
switch bodyType {
case URLEncodedJSONPayload:
return ctx.FormValue("payload")
case URLEncodedJSONPayloadOrJSON:
ct := strings.TrimSpace(
strings.ToLower(
string(ctx.Request.Header.Peek("Content-Type"))))
if strings.Index(ct, `application/json`) > -1 {
return ctx.PostBody()
}
return ctx.FormValue("payload")
default:
return ctx.PostBody()
}
}
type AwsAPIGatewayProxyOutput struct {
IsBase64Encoded bool `json:"isBase64Encoded"`
StatusCode int `json:"statusCode"`
Body string `json:"body"`
Headers map[string]string `json:"headers"`
}
type ErrorInfo struct {
StatusCode int
Body []byte
}
type ResponseInfo struct {
HookData HookData `json:"hookData,omitempty"`
Responses []ErrorInfo `json:"responses,omitempty"`
StatusCode int `json:"statusCode,omitempty"`
//URL string `json:"url,omitempty"`
//Body interface{} `json:"body,omitempty"`
//InputType string `json:"inputType,omitempty"`
//OutputType string `json:"outputType,omitempty"`
}
func (ri *ResponseInfo) ToAPIGatewayProxyResponse() (events.APIGatewayProxyResponse, error) {
res := events.APIGatewayProxyResponse{
StatusCode: ri.StatusCode,
}
bodyBytes, err := json.Marshal(ri)
if err != nil {
return res, nil
}
res.Body = string(bodyBytes)
return res, nil
}
/*
func ErrorsInfoToResponseInfo(errs ...ErrorInfo) ErrorInfo {
resInfo := ResponseInfo{
Responses: errs,
}
return resInfo
}
*/
func GetMaxStatusCode(errs ...ErrorInfo) int {
if len(errs) == 0 {
return http.StatusOK
} else if len(errs) == 1 {
return errs[0].StatusCode
}
maxStatus := 200
for _, errInfo := range errs {
if errInfo.StatusCode > maxStatus {
maxStatus = errInfo.StatusCode
}
}
return maxStatus
}
func ErrorsInfoToResponseInfoOld(errs ...ErrorInfo) ErrorInfo {
resInfo := ErrorInfo{}
if len(errs) == 0 {
resInfo.StatusCode = http.StatusOK
return resInfo
}
bodyBytes, err := json.Marshal(errs)
if err != nil {
resInfo.Body = []byte(err.Error())
} else {
resInfo.Body = bodyBytes
}
if len(errs) == 1 {
resInfo.StatusCode = errs[0].StatusCode
} else {
maxStatus := 0
for _, errInfo := range errs {
if errInfo.StatusCode > maxStatus {
maxStatus = errInfo.StatusCode
}
}
resInfo.StatusCode = maxStatus
}
return resInfo
}
func BuildAwsAPIGatewayProxyResponse(hookData HookData, errs ...ErrorInfo) (events.APIGatewayProxyResponse, error) {
resInfo := ResponseInfo{
HookData: hookData,
Responses: errs,
StatusCode: GetMaxStatusCode(errs...)}
return resInfo.ToAPIGatewayProxyResponse()
}