From fa26ecc8f98d0756d77543ea47ad82501d5fc48f Mon Sep 17 00:00:00 2001
From: Alexander Neumann <alexander@bumpern.de>
Date: Wed, 11 May 2016 22:30:32 +0200
Subject: [PATCH] Make `rebuild-index` use the code in package repository

---
 src/cmds/restic/cmd_rebuild_index.go | 100 +--------------------------
 1 file changed, 2 insertions(+), 98 deletions(-)

diff --git a/src/cmds/restic/cmd_rebuild_index.go b/src/cmds/restic/cmd_rebuild_index.go
index 8ac54d80b..cb50c1054 100644
--- a/src/cmds/restic/cmd_rebuild_index.go
+++ b/src/cmds/restic/cmd_rebuild_index.go
@@ -1,14 +1,6 @@
 package main
 
-import (
-	"fmt"
-	"os"
-	"restic/backend"
-	"restic/debug"
-	"restic/pack"
-	"restic/repository"
-	"restic/worker"
-)
+import "restic/repository"
 
 type CmdRebuildIndex struct {
 	global *GlobalOptions
@@ -26,94 +18,6 @@ func init() {
 	}
 }
 
-const rebuildIndexWorkers = 10
-
-func loadBlobsFromPacks(repo *repository.Repository) (packs map[backend.ID][]pack.Blob) {
-	done := make(chan struct{})
-	defer close(done)
-
-	f := func(job worker.Job, done <-chan struct{}) (interface{}, error) {
-		return repo.ListPack(job.Data.(backend.ID))
-	}
-
-	jobCh := make(chan worker.Job)
-	resCh := make(chan worker.Job)
-	wp := worker.New(rebuildIndexWorkers, f, jobCh, resCh)
-
-	go func() {
-		for id := range repo.List(backend.Data, done) {
-			jobCh <- worker.Job{Data: id}
-		}
-		close(jobCh)
-	}()
-
-	packs = make(map[backend.ID][]pack.Blob)
-	for job := range resCh {
-		id := job.Data.(backend.ID)
-
-		if job.Error != nil {
-			fmt.Fprintf(os.Stderr, "error for pack %v: %v\n", id, job.Error)
-			continue
-		}
-
-		entries := job.Result.([]pack.Blob)
-		packs[id] = entries
-	}
-
-	wp.Wait()
-
-	return packs
-}
-
-func listIndexIDs(repo *repository.Repository) (list backend.IDs) {
-	done := make(chan struct{})
-	for id := range repo.List(backend.Index, done) {
-		list = append(list, id)
-	}
-
-	return list
-}
-
-func (cmd CmdRebuildIndex) rebuildIndex() error {
-	debug.Log("RebuildIndex.RebuildIndex", "start rebuilding index")
-
-	packs := loadBlobsFromPacks(cmd.repo)
-	cmd.global.Verbosef("loaded blobs from %d packs\n", len(packs))
-
-	idx := repository.NewIndex()
-	for packID, entries := range packs {
-		for _, entry := range entries {
-			pb := repository.PackedBlob{
-				ID:     entry.ID,
-				Type:   entry.Type,
-				Length: entry.Length,
-				Offset: entry.Offset,
-				PackID: packID,
-			}
-			idx.Store(pb)
-		}
-	}
-
-	oldIndexes := listIndexIDs(cmd.repo)
-	idx.AddToSupersedes(oldIndexes...)
-	cmd.global.Printf("  saving new index\n")
-	id, err := repository.SaveIndex(cmd.repo, idx)
-	if err != nil {
-		debug.Log("RebuildIndex.RebuildIndex", "error saving index: %v", err)
-		return err
-	}
-	debug.Log("RebuildIndex.RebuildIndex", "new index saved as %v", id.Str())
-
-	for _, indexID := range oldIndexes {
-		err := cmd.repo.Backend().Remove(backend.Index, indexID.String())
-		if err != nil {
-			cmd.global.Warnf("unable to remove index %v: %v\n", indexID.Str(), err)
-		}
-	}
-
-	return nil
-}
-
 func (cmd CmdRebuildIndex) Execute(args []string) error {
 	repo, err := cmd.global.OpenRepository()
 	if err != nil {
@@ -127,5 +31,5 @@ func (cmd CmdRebuildIndex) Execute(args []string) error {
 		return err
 	}
 
-	return cmd.rebuildIndex()
+	return repository.RebuildIndex(repo)
 }