Includes mmctl into the mono-repo (#23091)

* Includes mmctl into the mono-repo

* Update to use the new public module paths

* Adds docs check to the mmctl CI

* Fix public utils import path

* Tidy up modules

* Fix linter

* Update CI tasks to use the new file structure

* Update CI references

server/cmd/mmctl/commands/integrity.go

@@ -0,0 +1,103 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+package commands
+
+import (
+	"fmt"
+
+	"github.com/hashicorp/go-multierror"
+
+	"github.com/mattermost/mattermost-server/server/v8/cmd/mmctl/client"
+	"github.com/mattermost/mattermost-server/server/v8/cmd/mmctl/printer"
+
+	"github.com/mattermost/mattermost-server/server/public/model"
+	"github.com/spf13/cobra"
+)
+
+var IntegrityCmd = &cobra.Command{
+	Use:    "integrity",
+	Short:  "Check database records integrity.",
+	Long:   "Perform a relational integrity check which returns information about any orphaned record found.",
+	Args:   cobra.NoArgs,
+	PreRun: localOnlyPrecheck,
+	RunE:   withClient(integrityCmdF),
+}
+
+func init() {
+	IntegrityCmd.Flags().Bool("confirm", false, "Confirm you really want to run a complete integrity check that may temporarily harm system performance")
+	IntegrityCmd.Flags().BoolP("verbose", "v", false, "Show detailed information on integrity check results")
+	RootCmd.AddCommand(IntegrityCmd)
+}
+
+func printRelationalIntegrityCheckResult(data model.RelationalIntegrityCheckData, verbose bool) {
+	printer.PrintT("Found {{len .Records}} in relation {{ .ChildName }} orphans of relation {{ .ParentName }}", data)
+	if !verbose {
+		return
+	}
+	const null = "NULL"
+	const empty = "empty"
+	for _, record := range data.Records {
+		var parentID string
+
+		switch {
+		case record.ParentId == nil:
+			parentID = null
+		case *record.ParentId == "":
+			parentID = empty
+		default:
+			parentID = *record.ParentId
+		}
+
+		if record.ChildId != nil {
+			if parentID == null || parentID == empty {
+				fmt.Printf("  Child %s (%s.%s) has %s ParentIdAttr (%s.%s)\n", *record.ChildId, data.ChildName, data.ChildIdAttr, parentID, data.ChildName, data.ParentIdAttr)
+			} else {
+				fmt.Printf("  Child %s (%s.%s) is missing Parent %s (%s.%s)\n", *record.ChildId, data.ChildName, data.ChildIdAttr, parentID, data.ChildName, data.ParentIdAttr)
+			}
+		} else {
+			if parentID == null || parentID == empty {
+				fmt.Printf("  Child has %s ParentIdAttr (%s.%s)\n", parentID, data.ChildName, data.ParentIdAttr)
+			} else {
+				fmt.Printf("  Child is missing Parent %s (%s.%s)\n", parentID, data.ChildName, data.ParentIdAttr)
+			}
+		}
+	}
+}
+
+func printIntegrityCheckResult(result model.IntegrityCheckResult, verbose bool) {
+	switch data := result.Data.(type) {
+	case model.RelationalIntegrityCheckData:
+		printRelationalIntegrityCheckResult(data, verbose)
+	default:
+		printer.PrintError("invalid data type")
+	}
+}
+
+func integrityCmdF(c client.Client, command *cobra.Command, args []string) error {
+	confirmFlag, _ := command.Flags().GetBool("confirm")
+	if !confirmFlag {
+		if err := getConfirmation("This check may harm performance on live systems. Are you sure you want to proceed?", false); err != nil {
+			return err
+		}
+	}
+
+	verboseFlag, _ := command.Flags().GetBool("verbose")
+
+	results, _, err := c.CheckIntegrity()
+	if err != nil {
+		return fmt.Errorf("unable to perform integrity check. Error: %w", err)
+	}
+
+	var errs *multierror.Error
+	for _, result := range results {
+		if result.Err != nil {
+			errs = multierror.Append(errs, result.Err)
+			printer.PrintError(result.Err.Error())
+			continue
+		}
+		printIntegrityCheckResult(result, verboseFlag)
+	}
+
+	return errs.ErrorOrNil()
+}