Admin log table (#21153)

* Reformat Log Output for SysAdmin UI

* Restore old code

* Update

* Backend first pass

* PR feedback

* Set helpers to private

* Lint fix

* Fix mocks

* Fix another mock

* Fix lint again

* Fix i18n

* Update app/admin.go

Co-authored-by: Ibrahim Serdar Acikgoz <serdaracikgoz86@gmail.com>

* PR feedback

* FIx lint issue

---------

Co-authored-by: Daniel Schalla <daniel@schalla.me>
Co-authored-by: Nevyana Angelova <nevyangelova@Nevyanas-MacBook-Pro.local>
Co-authored-by: Devin Binnie <devin.binnie@mattermost.com>
Co-authored-by: Devin Binnie <52460000+devinbinnie@users.noreply.github.com>
Co-authored-by: Ibrahim Serdar Acikgoz <serdaracikgoz86@gmail.com>
Co-authored-by: Mattermod <mattermod@users.noreply.github.com>
Co-authored-by: Mattermost Build <build@mattermost.com>

app/admin.go

@@ -37,7 +37,7 @@ func (s *Server) GetLogs(page, perPage int) ([]string, *model.AppError) {
 		}
 	}
 
-	melines, err := s.GetLogsSkipSend(page, perPage)
+	melines, err := s.GetLogsSkipSend(page, perPage, &model.LogFilter{})
 	if err != nil {
 		return nil, err
 	}
@@ -56,16 +56,75 @@ func (s *Server) GetLogs(page, perPage int) ([]string, *model.AppError) {
 	return lines, nil
 }
 
+func (s *Server) QueryLogs(page, perPage int, logFilter *model.LogFilter) (map[string][]string, *model.AppError) {
+	logData := make(map[string][]string)
+
+	serverName := "default"
+
+	license := s.License()
+	if license != nil && *license.Features.Cluster && s.platform.Cluster() != nil && *s.platform.Config().ClusterSettings.Enable {
+		if info := s.platform.Cluster().GetMyClusterInfo(); info != nil {
+			serverName = info.Hostname
+		} else {
+			mlog.Error("Could not get cluster info")
+		}
+	}
+
+	serverNames := logFilter.ServerNames
+	if len(serverNames) > 0 {
+		for _, nodeName := range serverNames {
+			if nodeName == "default" {
+				AddLocalLogs(logData, s, page, perPage, nodeName, logFilter)
+			}
+		}
+	} else {
+		AddLocalLogs(logData, s, page, perPage, serverName, logFilter)
+	}
+
+	if s.platform.Cluster() != nil && *s.Config().ClusterSettings.Enable {
+		clusterLogs, err := s.platform.Cluster().QueryLogs(page, perPage)
+		if err != nil {
+			return nil, err
+		}
+
+		if clusterLogs != nil && len(serverNames) > 0 {
+			for _, filteredNodeName := range serverNames {
+				logData[filteredNodeName] = clusterLogs[filteredNodeName]
+			}
+		} else {
+			for nodeName, logs := range clusterLogs {
+				logData[nodeName] = logs
+			}
+		}
+	}
+
+	return logData, nil
+}
+
+func AddLocalLogs(logData map[string][]string, s *Server, page, perPage int, serverName string, logFilter *model.LogFilter) *model.AppError {
+	currentServerLogs, err := s.GetLogsSkipSend(page, perPage, logFilter)
+	if err != nil {
+		return err
+	}
+
+	logData[serverName] = currentServerLogs
+	return nil
+}
+
+func (a *App) QueryLogs(page, perPage int, logFilter *model.LogFilter) (map[string][]string, *model.AppError) {
+	return a.Srv().QueryLogs(page, perPage, logFilter)
+}
+
 func (a *App) GetLogs(page, perPage int) ([]string, *model.AppError) {
 	return a.Srv().GetLogs(page, perPage)
 }
 
-func (s *Server) GetLogsSkipSend(page, perPage int) ([]string, *model.AppError) {
-	return s.platform.GetLogsSkipSend(page, perPage)
+func (s *Server) GetLogsSkipSend(page, perPage int, logFilter *model.LogFilter) ([]string, *model.AppError) {
+	return s.platform.GetLogsSkipSend(page, perPage, logFilter)
 }
 
-func (a *App) GetLogsSkipSend(page, perPage int) ([]string, *model.AppError) {
-	return a.Srv().GetLogsSkipSend(page, perPage)
+func (a *App) GetLogsSkipSend(page, perPage int, logFilter *model.LogFilter) ([]string, *model.AppError) {
+	return a.Srv().GetLogsSkipSend(page, perPage, logFilter)
 }
 
 func (a *App) GetClusterStatus() []*model.ClusterInfo {