Migrate to use jsoniter instead of encoding/json (#14841)

* Migrate to use jsoniter

* fix tests

* update gitea.com/go-chi/binding

Signed-off-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: 6543 <6543@obermui.de>

36 files changed, 113 insertions, 40 deletions

diff --git a/modules/context/context.go b/modules/context/context.go
index 899f61d686..c06784c116 100644
--- a/modules/context/context.go
+++ b/modules/context/context.go
@@ -9,7 +9,6 @@ import (
 	"context"
 	"crypto/sha256"
 	"encoding/hex"
-	"encoding/json"
 	"fmt"
 	"html"
 	"html/template"
@@ -34,6 +33,7 @@ import (
 	"gitea.com/go-chi/cache"
 	"gitea.com/go-chi/session"
 	"github.com/go-chi/chi"
+	jsoniter "github.com/json-iterator/go"
 	"github.com/unknwon/com"
 	"github.com/unknwon/i18n"
 	"github.com/unrolled/render"
@@ -370,6 +370,7 @@ func (ctx *Context) Error(status int, contents ...string) {
 func (ctx *Context) JSON(status int, content interface{}) {
 	ctx.Resp.Header().Set("Content-Type", "application/json;charset=utf-8")
 	ctx.Resp.WriteHeader(status)
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	if err := json.NewEncoder(ctx.Resp).Encode(content); err != nil {
 		ctx.ServerError("Render JSON failed", err)
 	}
diff --git a/modules/eventsource/event.go b/modules/eventsource/event.go
index fd418c6f07..a3407a94d2 100644
--- a/modules/eventsource/event.go
+++ b/modules/eventsource/event.go
@@ -6,11 +6,12 @@ package eventsource
 
 import (
 	"bytes"
-	"encoding/json"
 	"fmt"
 	"io"
 	"strings"
 	"time"
+
+	jsoniter "github.com/json-iterator/go"
 )
 
 func wrapNewlines(w io.Writer, prefix []byte, value []byte) (sum int64, err error) {
@@ -79,6 +80,7 @@ func (e *Event) WriteTo(w io.Writer) (int64, error) {
 			data = []byte(v)
 		default:
 			var err error
+			json := jsoniter.ConfigCompatibleWithStandardLibrary
 			data, err = json.Marshal(e.Data)
 			if err != nil {
 				return sum, err
diff --git a/modules/httplib/httplib.go b/modules/httplib/httplib.go
index 90bbe8f12a..62f284d2e1 100644
--- a/modules/httplib/httplib.go
+++ b/modules/httplib/httplib.go
@@ -8,7 +8,6 @@ package httplib
 import (
 	"bytes"
 	"crypto/tls"
-	"encoding/json"
 	"encoding/xml"
 	"io"
 	"io/ioutil"
@@ -23,6 +22,8 @@ import (
 	"strings"
 	"sync"
 	"time"
+
+	jsoniter "github.com/json-iterator/go"
 )
 
 var defaultSetting = Settings{false, "GiteaServer", 60 * time.Second, 60 * time.Second, nil, nil, nil, false}
@@ -434,6 +435,7 @@ func (r *Request) ToJSON(v interface{}) error {
 	if err != nil {
 		return err
 	}
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	err = json.Unmarshal(data, v)
 	return err
 }
diff --git a/modules/indexer/code/elastic_search.go b/modules/indexer/code/elastic_search.go
index c9d604b694..130cd1430a 100644
--- a/modules/indexer/code/elastic_search.go
+++ b/modules/indexer/code/elastic_search.go
@@ -6,7 +6,6 @@ package code
 
 import (
 	"context"
-	"encoding/json"
 	"fmt"
 	"strconv"
 	"strings"
@@ -22,6 +21,7 @@ import (
 	"code.gitea.io/gitea/modules/timeutil"
 
 	"github.com/go-enry/go-enry/v2"
+	jsoniter "github.com/json-iterator/go"
 	"github.com/olivere/elastic/v7"
 )
 
@@ -300,6 +300,7 @@ func convertResult(searchResult *elastic.SearchResult, kw string, pageSize int)
 
 		repoID, fileName := parseIndexerID(hit.Id)
 		var res = make(map[string]interface{})
+		json := jsoniter.ConfigCompatibleWithStandardLibrary
 		if err := json.Unmarshal(hit.Source, &res); err != nil {
 			return 0, nil, nil, err
 		}
diff --git a/modules/lfs/locks.go b/modules/lfs/locks.go
index cf62492c7e..f2688c3260 100644
--- a/modules/lfs/locks.go
+++ b/modules/lfs/locks.go
@@ -5,7 +5,6 @@
 package lfs
 
 import (
-	"encoding/json"
 	"strconv"
 	"strings"
 
@@ -15,6 +14,7 @@ import (
 	"code.gitea.io/gitea/modules/log"
 	"code.gitea.io/gitea/modules/setting"
 	api "code.gitea.io/gitea/modules/structs"
+	jsoniter "github.com/json-iterator/go"
 )
 
 //checkIsValidRequest check if it a valid request in case of bad request it write the response to ctx.
@@ -184,6 +184,7 @@ func PostLockHandler(ctx *context.Context) {
 	var req api.LFSLockRequest
 	bodyReader := ctx.Req.Body
 	defer bodyReader.Close()
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	dec := json.NewDecoder(bodyReader)
 	if err := dec.Decode(&req); err != nil {
 		log.Warn("Failed to decode lock request as json. Error: %v", err)
@@ -319,6 +320,7 @@ func UnLockHandler(ctx *context.Context) {
 	var req api.LFSLockDeleteRequest
 	bodyReader := ctx.Req.Body
 	defer bodyReader.Close()
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	dec := json.NewDecoder(bodyReader)
 	if err := dec.Decode(&req); err != nil {
 		log.Warn("Failed to decode lock request as json. Error: %v", err)
diff --git a/modules/lfs/server.go b/modules/lfs/server.go
index be21a4de82..45cba9d9b7 100644
--- a/modules/lfs/server.go
+++ b/modules/lfs/server.go
@@ -6,7 +6,6 @@ package lfs
 
 import (
 	"encoding/base64"
-	"encoding/json"
 	"fmt"
 	"io"
 	"net/http"
@@ -23,6 +22,7 @@ import (
 	"code.gitea.io/gitea/modules/storage"
 
 	"github.com/dgrijalva/jwt-go"
+	jsoniter "github.com/json-iterator/go"
 )
 
 const (
@@ -233,6 +233,7 @@ func getMetaHandler(ctx *context.Context) {
 	ctx.Resp.Header().Set("Content-Type", metaMediaType)
 
 	if ctx.Req.Method == "GET" {
+		json := jsoniter.ConfigCompatibleWithStandardLibrary
 		enc := json.NewEncoder(ctx.Resp)
 		if err := enc.Encode(Represent(rv, meta, true, false)); err != nil {
 			log.Error("Failed to encode representation as json. Error: %v", err)
@@ -304,6 +305,7 @@ func PostHandler(ctx *context.Context) {
 	}
 	ctx.Resp.WriteHeader(sentStatus)
 
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	enc := json.NewEncoder(ctx.Resp)
 	if err := enc.Encode(Represent(rv, meta, meta.Existing, true)); err != nil {
 		log.Error("Failed to encode representation as json. Error: %v", err)
@@ -394,6 +396,7 @@ func BatchHandler(ctx *context.Context) {
 
 	respobj := &BatchResponse{Objects: responseObjects}
 
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	enc := json.NewEncoder(ctx.Resp)
 	if err := enc.Encode(respobj); err != nil {
 		log.Error("Failed to encode representation as json. Error: %v", err)
@@ -531,6 +534,7 @@ func unpack(ctx *context.Context) *RequestVars {
 		var p RequestVars
 		bodyReader := r.Body
 		defer bodyReader.Close()
+		json := jsoniter.ConfigCompatibleWithStandardLibrary
 		dec := json.NewDecoder(bodyReader)
 		err := dec.Decode(&p)
 		if err != nil {
@@ -554,6 +558,7 @@ func unpackbatch(ctx *context.Context) *BatchVars {
 
 	bodyReader := r.Body
 	defer bodyReader.Close()
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	dec := json.NewDecoder(bodyReader)
 	err := dec.Decode(&bv)
 	if err != nil {
diff --git a/modules/log/conn.go b/modules/log/conn.go
index 1abe44c1d4..ad3d7f74e0 100644
--- a/modules/log/conn.go
+++ b/modules/log/conn.go
@@ -6,9 +6,11 @@
 package log
 
 import (
-	"encoding/json"
+	"fmt"
 	"io"
 	"net"
+
+	jsoniter "github.com/json-iterator/go"
 )
 
 type connWriter struct {
@@ -104,9 +106,10 @@ func NewConn() LoggerProvider {
 // Init inits connection writer with json config.
 // json config only need key "level".
 func (log *ConnLogger) Init(jsonconfig string) error {
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	err := json.Unmarshal([]byte(jsonconfig), log)
 	if err != nil {
-		return err
+		return fmt.Errorf("Unable to parse JSON: %v", err)
 	}
 	log.NewWriterLogger(&connWriter{
 		ReconnectOnMsg: log.ReconnectOnMsg,
diff --git a/modules/log/conn_test.go b/modules/log/conn_test.go
index 0f35f02a2d..dc5de732f4 100644
--- a/modules/log/conn_test.go
+++ b/modules/log/conn_test.go
@@ -98,7 +98,8 @@ func TestConnLoggerBadConfig(t *testing.T) {
 	logger := NewConn()
 
 	err := logger.Init("{")
-	assert.Equal(t, "unexpected end of JSON input", err.Error())
+	assert.Error(t, err)
+	assert.Contains(t, err.Error(), "Unable to parse JSON")
 	logger.Close()
 }
 
diff --git a/modules/log/console.go b/modules/log/console.go
index a805021f0b..339b9ef3a4 100644
--- a/modules/log/console.go
+++ b/modules/log/console.go
@@ -6,9 +6,11 @@
 package log
 
 import (
-	"encoding/json"
+	"fmt"
 	"io"
 	"os"
+
+	jsoniter "github.com/json-iterator/go"
 )
 
 // CanColorStdout reports if we can color the Stdout
@@ -50,9 +52,10 @@ func NewConsoleLogger() LoggerProvider {
 // Init inits connection writer with json config.
 // json config only need key "level".
 func (log *ConsoleLogger) Init(config string) error {
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	err := json.Unmarshal([]byte(config), log)
 	if err != nil {
-		return err
+		return fmt.Errorf("Unable to parse JSON: %v", err)
 	}
 	if log.Stderr {
 		log.NewWriterLogger(&nopWriteCloser{
diff --git a/modules/log/console_test.go b/modules/log/console_test.go
index a028b5b875..e7ed07123b 100644
--- a/modules/log/console_test.go
+++ b/modules/log/console_test.go
@@ -17,7 +17,8 @@ func TestConsoleLoggerBadConfig(t *testing.T) {
 	logger := NewConsoleLogger()
 
 	err := logger.Init("{")
-	assert.Equal(t, "unexpected end of JSON input", err.Error())
+	assert.Error(t, err)
+	assert.Contains(t, err.Error(), "Unable to parse JSON")
 	logger.Close()
 }
 
diff --git a/modules/log/file.go b/modules/log/file.go
index c9b5d47c0b..d5b38d4e01 100644
--- a/modules/log/file.go
+++ b/modules/log/file.go
@@ -7,7 +7,6 @@ package log
 import (
 	"bufio"
 	"compress/gzip"
-	"encoding/json"
 	"errors"
 	"fmt"
 	"os"
@@ -17,6 +16,7 @@ import (
 	"time"
 
 	"code.gitea.io/gitea/modules/util"
+	jsoniter "github.com/json-iterator/go"
 )
 
 // FileLogger implements LoggerProvider.
@@ -101,8 +101,9 @@ func NewFileLogger() LoggerProvider {
 //	"rotate":true
 //	}
 func (log *FileLogger) Init(config string) error {
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	if err := json.Unmarshal([]byte(config), log); err != nil {
-		return err
+		return fmt.Errorf("Unable to parse JSON: %v", err)
 	}
 	if len(log.Filename) == 0 {
 		return errors.New("config must have filename")
diff --git a/modules/log/level.go b/modules/log/level.go
index ab231bd1bd..4b2d4ced41 100644
--- a/modules/log/level.go
+++ b/modules/log/level.go
@@ -6,10 +6,11 @@ package log
 
 import (
 	"bytes"
-	"encoding/json"
 	"fmt"
 	"os"
 	"strings"
+
+	jsoniter "github.com/json-iterator/go"
 )
 
 // Level is the level of the logger
@@ -103,6 +104,7 @@ func FromString(level string) Level {
 // UnmarshalJSON takes text and turns it into a Level
 func (l *Level) UnmarshalJSON(b []byte) error {
 	var tmp interface{}
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	err := json.Unmarshal(b, &tmp)
 	if err != nil {
 		fmt.Fprintf(os.Stderr, "Err: %v", err)
diff --git a/modules/log/level_test.go b/modules/log/level_test.go
index 40f6310bfd..2f37e407a1 100644
--- a/modules/log/level_test.go
+++ b/modules/log/level_test.go
@@ -5,10 +5,10 @@
 package log
 
 import (
-	"encoding/json"
 	"fmt"
 	"testing"
 
+	jsoniter "github.com/json-iterator/go"
 	"github.com/stretchr/testify/assert"
 )
 
@@ -17,6 +17,7 @@ type testLevel struct {
 }
 
 func TestLevelMarshalUnmarshalJSON(t *testing.T) {
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	levelBytes, err := json.Marshal(testLevel{
 		Level: INFO,
 	})
diff --git a/modules/log/smtp.go b/modules/log/smtp.go
index edf4943619..3f27b2c658 100644
--- a/modules/log/smtp.go
+++ b/modules/log/smtp.go
@@ -6,9 +6,11 @@
 package log
 
 import (
-	"encoding/json"
+	"fmt"
 	"net/smtp"
 	"strings"
+
+	jsoniter "github.com/json-iterator/go"
 )
 
 type smtpWriter struct {
@@ -55,9 +57,10 @@ func NewSMTPLogger() LoggerProvider {
 //		"level":LevelError
 //	}
 func (log *SMTPLogger) Init(jsonconfig string) error {
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	err := json.Unmarshal([]byte(jsonconfig), log)
 	if err != nil {
-		return err
+		return fmt.Errorf("Unable to parse JSON: %v", err)
 	}
 	log.NewWriterLogger(&smtpWriter{
 		owner: log,
diff --git a/modules/notification/action/action.go b/modules/notification/action/action.go
index 836cb51b3e..3530e48b1c 100644
--- a/modules/notification/action/action.go
+++ b/modules/notification/action/action.go
@@ -5,7 +5,6 @@
 package action
 
 import (
-	"encoding/json"
 	"fmt"
 	"path"
 	"strings"
@@ -14,6 +13,7 @@ import (
 	"code.gitea.io/gitea/modules/log"
 	"code.gitea.io/gitea/modules/notification/base"
 	"code.gitea.io/gitea/modules/repository"
+	jsoniter "github.com/json-iterator/go"
 )
 
 type actionNotifier struct {
@@ -296,6 +296,7 @@ func (*actionNotifier) NotifyPullRevieweDismiss(doer *models.User, review *model
 }
 
 func (a *actionNotifier) NotifyPushCommits(pusher *models.User, repo *models.Repository, opts *repository.PushUpdateOptions, commits *repository.PushCommits) {
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	data, err := json.Marshal(commits)
 	if err != nil {
 		log.Error("Marshal: %v", err)
@@ -365,6 +366,7 @@ func (a *actionNotifier) NotifyDeleteRef(doer *models.User, repo *models.Reposit
 }
 
 func (a *actionNotifier) NotifySyncPushCommits(pusher *models.User, repo *models.Repository, opts *repository.PushUpdateOptions, commits *repository.PushCommits) {
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	data, err := json.Marshal(commits)
 	if err != nil {
 		log.Error("json.Marshal: %v", err)
diff --git a/modules/private/hook.go b/modules/private/hook.go
index 84d66943ba..178500f736 100644
--- a/modules/private/hook.go
+++ b/modules/private/hook.go
@@ -5,7 +5,6 @@
 package private
 
 import (
-	"encoding/json"
 	"fmt"
 	"net/http"
 	"net/url"
@@ -13,6 +12,7 @@ import (
 	"time"
 
 	"code.gitea.io/gitea/modules/setting"
+	jsoniter "github.com/json-iterator/go"
 )
 
 // Git environment variables
@@ -80,6 +80,7 @@ func HookPreReceive(ownerName, repoName string, opts HookOptions) (int, string)
 	)
 	req := newInternalRequest(reqURL, "POST")
 	req = req.Header("Content-Type", "application/json")
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	jsonBytes, _ := json.Marshal(opts)
 	req.Body(jsonBytes)
 	req.SetTimeout(60*time.Second, time.Duration(60+len(opts.OldCommitIDs))*time.Second)
@@ -106,6 +107,7 @@ func HookPostReceive(ownerName, repoName string, opts HookOptions) (*HookPostRec
 	req := newInternalRequest(reqURL, "POST")
 	req = req.Header("Content-Type", "application/json")
 	req.SetTimeout(60*time.Second, time.Duration(60+len(opts.OldCommitIDs))*time.Second)
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	jsonBytes, _ := json.Marshal(opts)
 	req.Body(jsonBytes)
 	resp, err := req.Response()
diff --git a/modules/private/internal.go b/modules/private/internal.go
index b4fee2680f..360fae47b6 100644
--- a/modules/private/internal.go
+++ b/modules/private/internal.go
@@ -6,13 +6,13 @@ package private
 
 import (
 	"crypto/tls"
-	"encoding/json"
 	"fmt"
 	"net"
 	"net/http"
 
 	"code.gitea.io/gitea/modules/httplib"
 	"code.gitea.io/gitea/modules/setting"
+	jsoniter "github.com/json-iterator/go"
 )
 
 func newRequest(url, method string) *httplib.Request {
@@ -27,6 +27,7 @@ type Response struct {
 
 func decodeJSONError(resp *http.Response) *Response {
 	var res Response
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	err := json.NewDecoder(resp.Body).Decode(&res)
 	if err != nil {
 		res.Err = err.Error()
diff --git a/modules/private/mail.go b/modules/private/mail.go
index 675dec8f11..9c0912a6e3 100644
--- a/modules/private/mail.go
+++ b/modules/private/mail.go
@@ -5,12 +5,12 @@
 package private
 
 import (
-	"encoding/json"
 	"fmt"
 	"io/ioutil"
 	"net/http"
 
 	"code.gitea.io/gitea/modules/setting"
+	jsoniter "github.com/json-iterator/go"
 )
 
 // Email structure holds a data for sending general emails
@@ -32,6 +32,7 @@ func SendEmail(subject, message string, to []string) (int, string) {
 
 	req := newInternalRequest(reqURL, "POST")
 	req = req.Header("Content-Type", "application/json")
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	jsonBytes, _ := json.Marshal(Email{
 		Subject: subject,
 		Message: message,
diff --git a/modules/private/manager.go b/modules/private/manager.go
index 6c9ec920bb..2bc6cec3b9 100644
--- a/modules/private/manager.go
+++ b/modules/private/manager.go
@@ -5,13 +5,13 @@
 package private
 
 import (
-	"encoding/json"
 	"fmt"
 	"net/http"
 	"net/url"
 	"time"
 
 	"code.gitea.io/gitea/modules/setting"
+	jsoniter "github.com/json-iterator/go"
 )
 
 // Shutdown calls the internal shutdown function
@@ -65,6 +65,7 @@ func FlushQueues(timeout time.Duration, nonBlocking bool) (int, string) {
 		req.SetTimeout(timeout+10*time.Second, timeout+10*time.Second)
 	}
 	req = req.Header("Content-Type", "application/json")
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	jsonBytes, _ := json.Marshal(FlushOptions{
 		Timeout:     timeout,
 		NonBlocking: nonBlocking,
@@ -151,6 +152,7 @@ func AddLogger(group, name, mode string, config map[string]interface{}) (int, st
 
 	req := newInternalRequest(reqURL, "POST")
 	req = req.Header("Content-Type", "application/json")
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	jsonBytes, _ := json.Marshal(LoggerOptions{
 		Group:  group,
 		Name:   name,
diff --git a/modules/private/serv.go b/modules/private/serv.go
index 235d99a2b9..e077b00ccc 100644
--- a/modules/private/serv.go
+++ b/modules/private/serv.go
@@ -5,13 +5,13 @@
 package private
 
 import (
-	"encoding/json"
 	"fmt"
 	"net/http"
 	"net/url"
 
 	"code.gitea.io/gitea/models"
 	"code.gitea.io/gitea/modules/setting"
+	jsoniter "github.com/json-iterator/go"
 )
 
 // KeyAndOwner is the response from ServNoCommand
@@ -34,6 +34,7 @@ func ServNoCommand(keyID int64) (*models.PublicKey, *models.User, error) {
 	}
 
 	var keyAndOwner KeyAndOwner
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	if err := json.NewDecoder(resp.Body).Decode(&keyAndOwner); err != nil {
 		return nil, nil, err
 	}
@@ -90,6 +91,7 @@ func ServCommand(keyID int64, ownerName, repoName string, mode models.AccessMode
 		return nil, err
 	}
 	defer resp.Body.Close()
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	if resp.StatusCode != http.StatusOK {
 		var errServCommand ErrServCommand
 		if err := json.NewDecoder(resp.Body).Decode(&errServCommand); err != nil {
diff --git a/modules/queue/helper.go b/modules/queue/helper.go
index 751e0cfadc..161c2fe8e7 100644
--- a/modules/queue/helper.go
+++ b/modules/queue/helper.go
@@ -5,8 +5,9 @@
 package queue
 
 import (
-	"encoding/json"
 	"reflect"
+
+	jsoniter "github.com/json-iterator/go"
 )
 
 // Mappable represents an interface that can MapTo another interface
@@ -19,6 +20,7 @@ type Mappable interface {
 // It will tolerate the cfg being passed as a []byte or string of a json representation of the
 // exemplar or the correct type of the exemplar itself
 func toConfig(exemplar, cfg interface{}) (interface{}, error) {
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 
 	// First of all check if we've got the same type as the exemplar - if so it's all fine.
 	if reflect.TypeOf(cfg).AssignableTo(reflect.TypeOf(exemplar)) {
@@ -66,6 +68,7 @@ func toConfig(exemplar, cfg interface{}) (interface{}, error) {
 
 // unmarshalAs will attempt to unmarshal provided bytes as the provided exemplar
 func unmarshalAs(bs []byte, exemplar interface{}) (data Data, err error) {
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	if exemplar != nil {
 		t := reflect.TypeOf(exemplar)
 		n := reflect.New(t)
diff --git a/modules/queue/manager.go b/modules/queue/manager.go
index 3e9f8fc8db..d44007a0f0 100644
--- a/modules/queue/manager.go
+++ b/modules/queue/manager.go
@@ -6,7 +6,6 @@ package queue
 
 import (
 	"context"
-	"encoding/json"
 	"fmt"
 	"reflect"
 	"sort"
@@ -14,6 +13,7 @@ import (
 	"time"
 
 	"code.gitea.io/gitea/modules/log"
+	jsoniter "github.com/json-iterator/go"
 )
 
 var manager *Manager
@@ -110,6 +110,7 @@ func (m *Manager) Add(managed interface{},
 	configuration,
 	exemplar interface{}) int64 {
 
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	cfg, _ := json.Marshal(configuration)
 	mq := &ManagedQueue{
 		Type:          t,
diff --git a/modules/queue/queue_bytefifo.go b/modules/queue/queue_bytefifo.go
index 4bb7bbf2b1..fe5178ff2d 100644
--- a/modules/queue/queue_bytefifo.go
+++ b/modules/queue/queue_bytefifo.go
@@ -6,12 +6,12 @@ package queue
 
 import (
 	"context"
-	"encoding/json"
 	"fmt"
 	"sync"
 	"time"
 
 	"code.gitea.io/gitea/modules/log"
+	jsoniter "github.com/json-iterator/go"
 )
 
 // ByteFIFOQueueConfiguration is the configuration for a ByteFIFOQueue
@@ -71,6 +71,7 @@ func (q *ByteFIFOQueue) PushFunc(data Data, fn func() error) error {
 	if !assignableTo(data, q.exemplar) {
 		return fmt.Errorf("Unable to assign data: %v to same type as exemplar: %v in %s", data, q.exemplar, q.name)
 	}
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	bs, err := json.Marshal(data)
 	if err != nil {
 		return err
@@ -229,6 +230,7 @@ func (q *ByteFIFOUniqueQueue) Has(data Data) (bool, error) {
 	if !assignableTo(data, q.exemplar) {
 		return false, fmt.Errorf("Unable to assign data: %v to same type as exemplar: %v in %s", data, q.exemplar, q.name)
 	}
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	bs, err := json.Marshal(data)
 	if err != nil {
 		return false, err
diff --git a/modules/queue/queue_test.go b/modules/queue/queue_test.go
index 3608f68d3d..89ce23ac4c 100644
--- a/modules/queue/queue_test.go
+++ b/modules/queue/queue_test.go
@@ -5,9 +5,9 @@
 package queue
 
 import (
-	"encoding/json"
 	"testing"
 
+	jsoniter "github.com/json-iterator/go"
 	"github.com/stretchr/testify/assert"
 )
 
@@ -30,6 +30,7 @@ func TestToConfig(t *testing.T) {
 	assert.NotEqual(t, cfg2, exemplar)
 	assert.Equal(t, &cfg, &cfg2)
 
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	cfgString, err := json.Marshal(cfg)
 	assert.NoError(t, err)
 
diff --git a/modules/queue/setting.go b/modules/queue/setting.go
index 9ee1af8c7d..9b2c31b783 100644
--- a/modules/queue/setting.go
+++ b/modules/queue/setting.go
@@ -5,12 +5,12 @@
 package queue
 
 import (
-	"encoding/json"
 	"fmt"
 	"strings"
 
 	"code.gitea.io/gitea/modules/log"
 	"code.gitea.io/gitea/modules/setting"
+	jsoniter "github.com/json-iterator/go"
 )
 
 func validType(t string) (Type, error) {
@@ -28,6 +28,7 @@ func validType(t string) (Type, error) {
 func getQueueSettings(name string) (setting.QueueSettings, []byte) {
 	q := setting.GetQueueSettings(name)
 
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	cfg, err := json.Marshal(q)
 	if err != nil {
 		log.Error("Unable to marshall generic options: %v Error: %v", q, err)
diff --git a/modules/recaptcha/recaptcha.go b/modules/recaptcha/recaptcha.go
index 54ea1dc0b3..f5f4c7ef9c 100644
--- a/modules/recaptcha/recaptcha.go
+++ b/modules/recaptcha/recaptcha.go
@@ -6,7 +6,6 @@ package recaptcha
 
 import (
 	"context"
-	"encoding/json"
 	"fmt"
 	"io/ioutil"
 	"net/http"
@@ -15,6 +14,7 @@ import (
 
 	"code.gitea.io/gitea/modules/setting"
 	"code.gitea.io/gitea/modules/util"
+	jsoniter "github.com/json-iterator/go"
 )
 
 // Response is the structure of JSON returned from API
@@ -51,6 +51,7 @@ func Verify(ctx context.Context, response string) (bool, error) {
 		return false, fmt.Errorf("Failed to read CAPTCHA response: %s", err)
 	}
 	var jsonResponse Response
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	err = json.Unmarshal(body, &jsonResponse)
 	if err != nil {
 		return false, fmt.Errorf("Failed to parse CAPTCHA response: %s", err)
diff --git a/modules/session/virtual.go b/modules/session/virtual.go
index 8402d49a77..8f5c4a7e89 100644
--- a/modules/session/virtual.go
+++ b/modules/session/virtual.go
@@ -5,7 +5,6 @@
 package session
 
 import (
-	"encoding/json"
 	"fmt"
 	"sync"
 
@@ -14,6 +13,7 @@ import (
 	memcache "gitea.com/go-chi/session/memcache"
 	mysql "gitea.com/go-chi/session/mysql"
 	postgres "gitea.com/go-chi/session/postgres"
+	jsoniter "github.com/json-iterator/go"
 )
 
 // VirtualSessionProvider represents a shadowed session provider implementation.
@@ -25,6 +25,7 @@ type VirtualSessionProvider struct {
 // Init initializes the cookie session provider with given root path.
 func (o *VirtualSessionProvider) Init(gclifetime int64, config string) error {
 	var opts session.Options
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	if err := json.Unmarshal([]byte(config), &opts); err != nil {
 		return err
 	}
diff --git a/modules/setting/log.go b/modules/setting/log.go
index 9fe2d5bda3..9bbeee27a2 100644
--- a/modules/setting/log.go
+++ b/modules/setting/log.go
@@ -5,7 +5,6 @@
 package setting
 
 import (
-	"encoding/json"
 	"fmt"
 	golog "log"
 	"os"
@@ -15,6 +14,7 @@ import (
 	"sync"
 
 	"code.gitea.io/gitea/modules/log"
+	jsoniter "github.com/json-iterator/go"
 
 	ini "gopkg.in/ini.v1"
 )
@@ -205,6 +205,7 @@ func generateLogConfig(sec *ini.Section, name string, defaults defaultLogOptions
 
 	logConfig["colorize"] = sec.Key("COLORIZE").MustBool(false)
 
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	byteConfig, err := json.Marshal(logConfig)
 	if err != nil {
 		log.Error("Failed to marshal log configuration: %v %v", logConfig, err)
diff --git a/modules/setting/session.go b/modules/setting/session.go
index 31f876132d..eb5e1a1875 100644
--- a/modules/setting/session.go
+++ b/modules/setting/session.go
@@ -5,12 +5,12 @@
 package setting
 
 import (
-	"encoding/json"
 	"path"
 	"path/filepath"
 	"strings"
 
 	"code.gitea.io/gitea/modules/log"
+	jsoniter "github.com/json-iterator/go"
 )
 
 var (
@@ -53,6 +53,7 @@ func newSessionService() {
 	SessionConfig.Maxlifetime = sec.Key("SESSION_LIFE_TIME").MustInt64(86400)
 	SessionConfig.Domain = sec.Key("DOMAIN").String()
 
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	shadowConfig, err := json.Marshal(SessionConfig)
 	if err != nil {
 		log.Fatal("Can't shadow session config: %v", err)
diff --git a/modules/setting/setting.go b/modules/setting/setting.go
index cca7f46f14..4976c0007c 100644
--- a/modules/setting/setting.go
+++ b/modules/setting/setting.go
@@ -7,7 +7,6 @@ package setting
 
 import (
 	"encoding/base64"
-	"encoding/json"
 	"fmt"
 	"io"
 	"io/ioutil"
@@ -28,6 +27,7 @@ import (
 	"code.gitea.io/gitea/modules/user"
 	"code.gitea.io/gitea/modules/util"
 
+	jsoniter "github.com/json-iterator/go"
 	shellquote "github.com/kballard/go-shellquote"
 	"github.com/unknwon/com"
 	gossh "golang.org/x/crypto/ssh"
@@ -1111,6 +1111,7 @@ func MakeManifestData(appName string, appURL string, absoluteAssetURL string) []
 		Icons     []manifestIcon `json:"icons"`
 	}
 
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	bytes, err := json.Marshal(&manifestJSON{
 		Name:      appName,
 		ShortName: appName,
diff --git a/modules/setting/setting_test.go b/modules/setting/setting_test.go
index 7dd3d3bba9..9bc77ab0bb 100644
--- a/modules/setting/setting_test.go
+++ b/modules/setting/setting_test.go
@@ -5,9 +5,9 @@
 package setting
 
 import (
-	"encoding/json"
 	"testing"
 
+	jsoniter "github.com/json-iterator/go"
 	"github.com/stretchr/testify/assert"
 )
 
@@ -28,5 +28,6 @@ func TestMakeAbsoluteAssetURL(t *testing.T) {
 
 func TestMakeManifestData(t *testing.T) {
 	jsonBytes := MakeManifestData(`Example App '\"`, "https://example.com", "https://example.com/foo/bar")
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	assert.True(t, json.Valid(jsonBytes))
 }
diff --git a/modules/storage/helper.go b/modules/storage/helper.go
index 93f22734e5..46ab82aed6 100644
--- a/modules/storage/helper.go
+++ b/modules/storage/helper.go
@@ -5,8 +5,9 @@
 package storage
 
 import (
-	"encoding/json"
 	"reflect"
+
+	jsoniter "github.com/json-iterator/go"
 )
 
 // Mappable represents an interface that can MapTo another interface
@@ -19,6 +20,7 @@ type Mappable interface {
 // It will tolerate the cfg being passed as a []byte or string of a json representation of the
 // exemplar or the correct type of the exemplar itself
 func toConfig(exemplar, cfg interface{}) (interface{}, error) {
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 
 	// First of all check if we've got the same type as the exemplar - if so it's all fine.
 	if reflect.TypeOf(cfg).AssignableTo(reflect.TypeOf(exemplar)) {
diff --git a/modules/structs/hook.go b/modules/structs/hook.go
index 45ae94f985..693820b57d 100644
--- a/modules/structs/hook.go
+++ b/modules/structs/hook.go
@@ -6,10 +6,11 @@
 package structs
 
 import (
-	"encoding/json"
 	"errors"
 	"strings"
 	"time"
+
+	jsoniter "github.com/json-iterator/go"
 )
 
 var (
@@ -138,12 +139,14 @@ func (p *CreatePayload) SetSecret(secret string) {
 
 // JSONPayload return payload information
 func (p *CreatePayload) JSONPayload() ([]byte, error) {
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	return json.MarshalIndent(p, "", "  ")
 }
 
 // ParseCreateHook parses create event hook content.
 func ParseCreateHook(raw []byte) (*CreatePayload, error) {
 	hook := new(CreatePayload)
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	if err := json.Unmarshal(raw, hook); err != nil {
 		return nil, err
 	}
@@ -193,6 +196,7 @@ func (p *DeletePayload) SetSecret(secret string) {
 
 // JSONPayload implements Payload
 func (p *DeletePayload) JSONPayload() ([]byte, error) {
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	return json.MarshalIndent(p, "", "  ")
 }
 
@@ -218,6 +222,7 @@ func (p *ForkPayload) SetSecret(secret string) {
 
 // JSONPayload implements Payload
 func (p *ForkPayload) JSONPayload() ([]byte, error) {
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	return json.MarshalIndent(p, "", "  ")
 }
 
@@ -250,6 +255,7 @@ func (p *IssueCommentPayload) SetSecret(secret string) {
 
 // JSONPayload implements Payload
 func (p *IssueCommentPayload) JSONPayload() ([]byte, error) {
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	return json.MarshalIndent(p, "", "  ")
 }
 
@@ -286,6 +292,7 @@ func (p *ReleasePayload) SetSecret(secret string) {
 
 // JSONPayload implements Payload
 func (p *ReleasePayload) JSONPayload() ([]byte, error) {
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	return json.MarshalIndent(p, "", "  ")
 }
 
@@ -317,12 +324,14 @@ func (p *PushPayload) SetSecret(secret string) {
 
 // JSONPayload FIXME
 func (p *PushPayload) JSONPayload() ([]byte, error) {
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	return json.MarshalIndent(p, "", "  ")
 }
 
 // ParsePushHook parses push event hook content.
 func ParsePushHook(raw []byte) (*PushPayload, error) {
 	hook := new(PushPayload)
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	if err := json.Unmarshal(raw, hook); err != nil {
 		return nil, err
 	}
@@ -396,6 +405,7 @@ func (p *IssuePayload) SetSecret(secret string) {
 
 // JSONPayload encodes the IssuePayload to JSON, with an indentation of two spaces.
 func (p *IssuePayload) JSONPayload() ([]byte, error) {
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	return json.MarshalIndent(p, "", "  ")
 }
 
@@ -437,6 +447,7 @@ func (p *PullRequestPayload) SetSecret(secret string) {
 
 // JSONPayload FIXME
 func (p *PullRequestPayload) JSONPayload() ([]byte, error) {
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	return json.MarshalIndent(p, "", "  ")
 }
 
@@ -479,5 +490,6 @@ func (p *RepositoryPayload) SetSecret(secret string) {
 
 // JSONPayload JSON representation of the payload
 func (p *RepositoryPayload) JSONPayload() ([]byte, error) {
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	return json.MarshalIndent(p, "", " ")
 }
diff --git a/modules/structs/user.go b/modules/structs/user.go
index 511e4c56ce..9e021e40fe 100644
--- a/modules/structs/user.go
+++ b/modules/structs/user.go
@@ -5,8 +5,9 @@
 package structs
 
 import (
-	"encoding/json"
 	"time"
+
+	jsoniter "github.com/json-iterator/go"
 )
 
 // User represents a user
@@ -38,6 +39,7 @@ type User struct {
 func (u User) MarshalJSON() ([]byte, error) {
 	// Re-declaring User to avoid recursion
 	type shadow User
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	return json.Marshal(struct {
 		shadow
 		CompatUserName string `json:"username"`
diff --git a/modules/task/task.go b/modules/task/task.go
index 72f111ecc7..0443517c01 100644
--- a/modules/task/task.go
+++ b/modules/task/task.go
@@ -5,7 +5,6 @@
 package task
 
 import (
-	"encoding/json"
 	"fmt"
 
 	"code.gitea.io/gitea/models"
@@ -16,6 +15,7 @@ import (
 	repo_module "code.gitea.io/gitea/modules/repository"
 	"code.gitea.io/gitea/modules/structs"
 	"code.gitea.io/gitea/modules/timeutil"
+	jsoniter "github.com/json-iterator/go"
 )
 
 // taskQueue is a global queue of tasks
@@ -65,6 +65,7 @@ func MigrateRepository(doer, u *models.User, opts base.MigrateOptions) error {
 
 // CreateMigrateTask creates a migrate task
 func CreateMigrateTask(doer, u *models.User, opts base.MigrateOptions) (*models.Task, error) {
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	bs, err := json.Marshal(&opts)
 	if err != nil {
 		return nil, err
diff --git a/modules/templates/helper.go b/modules/templates/helper.go
index 4b9b648b2f..d3f6b8e06f 100644
--- a/modules/templates/helper.go
+++ b/modules/templates/helper.go
@@ -38,6 +38,7 @@ import (
 	mirror_service "code.gitea.io/gitea/services/mirror"
 
 	"github.com/editorconfig/editorconfig-core-go/v2"
+	jsoniter "github.com/json-iterator/go"
 )
 
 // Used from static.go && dynamic.go
@@ -45,6 +46,7 @@ var mailSubjectSplit = regexp.MustCompile(`(?m)^-{3,}[\s]*$`)
 
 // NewFuncMap returns functions for injecting to templates
 func NewFuncMap() []template.FuncMap {
+	jsonED := jsoniter.ConfigCompatibleWithStandardLibrary
 	return []template.FuncMap{map[string]interface{}{
 		"GoVer": func() string {
 			return strings.Title(runtime.Version())
@@ -215,7 +217,7 @@ func NewFuncMap() []template.FuncMap {
 			return fmt.Sprintf("%f", float64(adds)/(float64(adds)+float64(dels))*100)
 		},
 		"Json": func(in interface{}) string {
-			out, err := json.Marshal(in)
+			out, err := jsonED.Marshal(in)
 			if err != nil {
 				return ""
 			}
@@ -814,6 +816,8 @@ func ActionIcon(opType models.ActionType) string {
 // ActionContent2Commits converts action content to push commits
 func ActionContent2Commits(act Actioner) *repository.PushCommits {
 	push := repository.NewPushCommits()
+
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	if err := json.Unmarshal([]byte(act.GetContent()), push); err != nil {
 		log.Error("json.Unmarshal:\n%s\nERROR: %v", act.GetContent(), err)
 	}