feat(performance): performance optimizations EE-6042 (#10520)

pkg/libhttp/error/error.go

@@ -2,11 +2,11 @@
 package error
 
 import (
-	"encoding/json"
 	"errors"
 	"net/http"
 
 	"github.com/rs/zerolog/log"
+	"github.com/segmentio/encoding/json"
 )
 
 type (
@@ -36,7 +36,11 @@ func writeErrorResponse(rw http.ResponseWriter, err *HandlerError) {
 	rw.Header().Set("Content-Type", "application/json")
 	rw.WriteHeader(err.StatusCode)
 
-	json.NewEncoder(rw).Encode(&errorResponse{Message: err.Message, Details: err.Err.Error()})
+	enc := json.NewEncoder(rw)
+	enc.SetSortMapKeys(false)
+	enc.SetAppendNewline(false)
+
+	enc.Encode(&errorResponse{Message: err.Message, Details: err.Err.Error()})
 }
 
 // WriteError is a convenience function that creates a new HandlerError before calling writeErrorResponse.

pkg/libhttp/request/payload.go

@@ -1,10 +1,10 @@
 package request
 
 import (
-	"encoding/json"
 	"net/http"
 
 	"github.com/pkg/errors"
+	"github.com/segmentio/encoding/json"
 )
 
 // PayloadValidation is an interface used to validate the payload of a request.

pkg/libhttp/request/payload_test.go

@@ -2,13 +2,13 @@ package request_test
 
 import (
 	"bytes"
-	"encoding/json"
 	"net/http"
 	"net/http/httptest"
 	"testing"
 
 	"github.com/portainer/portainer/pkg/libhttp/request"
 
+	"github.com/segmentio/encoding/json"
 	"github.com/stretchr/testify/assert"
 )
 

pkg/libhttp/request/request.go

@@ -4,13 +4,13 @@
 package request
 
 import (
-	"encoding/json"
 	"errors"
 	"io/ioutil"
 	"net/http"
 	"strconv"
 
 	"github.com/gorilla/mux"
+	"github.com/segmentio/encoding/json"
 )
 
 const (

pkg/libhttp/response/response.go

@@ -2,12 +2,13 @@
 package response
 
 import (
-	"encoding/json"
 	"errors"
 	"fmt"
 	"net/http"
 
 	httperror "github.com/portainer/portainer/pkg/libhttp/error"
+
+	"github.com/segmentio/encoding/json"
 )
 
 // JSON encodes data to rw in JSON format. Returns a pointer to a
@@ -15,7 +16,11 @@ import (
 func JSON(rw http.ResponseWriter, data interface{}) *httperror.HandlerError {
 	rw.Header().Set("Content-Type", "application/json")
 
-	err := json.NewEncoder(rw).Encode(data)
+	enc := json.NewEncoder(rw)
+	enc.SetSortMapKeys(false)
+	enc.SetAppendNewline(false)
+
+	err := enc.Encode(data)
 	if err != nil {
 		return httperror.InternalServerError("Unable to write JSON response", err)
 	}