Mono repo -> Master (#22553)

Combines the following repositories into one:

https://github.com/mattermost/mattermost-server
https://github.com/mattermost/mattermost-webapp
https://github.com/mattermost/focalboard
https://github.com/mattermost/mattermost-plugin-playbooks

server/channels/api4/system_local.go

@@ -0,0 +1,42 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+package api4
+
+import (
+	"encoding/json"
+	"net/http"
+
+	"github.com/mattermost/mattermost-server/v6/model"
+	"github.com/mattermost/mattermost-server/v6/server/channels/audit"
+)
+
+func (api *API) InitSystemLocal() {
+	api.BaseRoutes.System.Handle("/ping", api.APILocal(getSystemPing)).Methods("GET")
+	api.BaseRoutes.APIRoot.Handle("/logs", api.APILocal(getLogs)).Methods("GET")
+	api.BaseRoutes.APIRoot.Handle("/server_busy", api.APILocal(setServerBusy)).Methods("POST")
+	api.BaseRoutes.APIRoot.Handle("/server_busy", api.APILocal(getServerBusyExpires)).Methods("GET")
+	api.BaseRoutes.APIRoot.Handle("/server_busy", api.APILocal(clearServerBusy)).Methods("DELETE")
+	api.BaseRoutes.APIRoot.Handle("/integrity", api.APILocal(localCheckIntegrity)).Methods("POST")
+	api.BaseRoutes.System.Handle("/schema/version", api.APILocal(getAppliedSchemaMigrations)).Methods("GET")
+}
+
+func localCheckIntegrity(c *Context, w http.ResponseWriter, r *http.Request) {
+	auditRec := c.MakeAuditRecord("localCheckIntegrity", audit.Fail)
+	defer c.LogAuditRec(auditRec)
+
+	var results []model.IntegrityCheckResult
+	resultsChan := c.App.CheckIntegrity()
+	for result := range resultsChan {
+		results = append(results, result)
+	}
+
+	data, err := json.Marshal(results)
+	if err != nil {
+		c.Err = model.NewAppError("Api4.localCheckIntegrity", "api.marshal_error", nil, "", http.StatusInternalServerError).Wrap(err)
+		return
+	}
+
+	auditRec.Success()
+	w.Write(data)
+}