From c88331692ea676acf67eb489a600688cf0c62fc6 Mon Sep 17 00:00:00 2001
From: Luke Shumaker <lukeshu@lukeshu.com>
Date: Fri, 7 Apr 2023 13:43:52 -0600
Subject: btrfsutil: Split rebuilt_callbacks.go off from rebuilt_forrest.go

---
 lib/btrfsutil/rebuilt_forrest.go | 73 ----------------------------------------
 1 file changed, 73 deletions(-)

(limited to 'lib/btrfsutil/rebuilt_forrest.go')

diff --git a/lib/btrfsutil/rebuilt_forrest.go b/lib/btrfsutil/rebuilt_forrest.go
index 99213f1..29a5210 100644
--- a/lib/btrfsutil/rebuilt_forrest.go
+++ b/lib/btrfsutil/rebuilt_forrest.go
@@ -6,89 +6,16 @@ package btrfsutil
 
 import (
 	"context"
-	"fmt"
 
 	"github.com/datawire/dlib/dlog"
 
 	"git.lukeshu.com/btrfs-progs-ng/lib/btrfs"
-	"git.lukeshu.com/btrfs-progs-ng/lib/btrfs/btrfsitem"
 	"git.lukeshu.com/btrfs-progs-ng/lib/btrfs/btrfsprim"
 	"git.lukeshu.com/btrfs-progs-ng/lib/btrfs/btrfsvol"
 	"git.lukeshu.com/btrfs-progs-ng/lib/containers"
 	"git.lukeshu.com/btrfs-progs-ng/lib/slices"
 )
 
-type RebuiltForrestCallbacks interface {
-	AddedItem(ctx context.Context, tree btrfsprim.ObjID, key btrfsprim.Key)
-	AddedRoot(ctx context.Context, tree btrfsprim.ObjID, root btrfsvol.LogicalAddr)
-	LookupRoot(ctx context.Context, tree btrfsprim.ObjID) (offset btrfsprim.Generation, item btrfsitem.Root, ok bool)
-	LookupUUID(ctx context.Context, uuid btrfsprim.UUID) (id btrfsprim.ObjID, ok bool)
-}
-
-type noopRebuiltForrestCallbacks struct {
-	forrest *RebuiltForrest
-}
-
-func (noopRebuiltForrestCallbacks) AddedItem(context.Context, btrfsprim.ObjID, btrfsprim.Key) {}
-func (noopRebuiltForrestCallbacks) AddedRoot(context.Context, btrfsprim.ObjID, btrfsvol.LogicalAddr) {
-}
-
-func (cb noopRebuiltForrestCallbacks) LookupRoot(ctx context.Context, tree btrfsprim.ObjID) (offset btrfsprim.Generation, _item btrfsitem.Root, ok bool) {
-	rootTree := cb.forrest.RebuiltTree(ctx, btrfsprim.ROOT_TREE_OBJECTID)
-	if rootTree == nil {
-		return 0, btrfsitem.Root{}, false
-	}
-	tgt := btrfsprim.Key{
-		ObjectID: tree,
-		ItemType: btrfsprim.ROOT_ITEM_KEY,
-	}
-	itemKey, itemPtr, ok := rootTree.RebuiltAcquireItems(ctx).Search(func(key btrfsprim.Key, _ ItemPtr) int {
-		key.Offset = 0
-		return tgt.Compare(key)
-	})
-	rootTree.RebuiltReleaseItems()
-	if !ok {
-		return 0, btrfsitem.Root{}, false
-	}
-	itemBody := cb.forrest.readItem(ctx, itemPtr)
-	defer itemBody.Free()
-	switch itemBody := itemBody.(type) {
-	case *btrfsitem.Root:
-		return btrfsprim.Generation(itemKey.Offset), *itemBody, true
-	case *btrfsitem.Error:
-		return 0, btrfsitem.Root{}, false
-	default:
-		// This is a panic because the item decoder should not emit ROOT_ITEM items as anything but
-		// btrfsitem.Root or btrfsitem.Error without this code also being updated.
-		panic(fmt.Errorf("should not happen: ROOT_ITEM item has unexpected type: %T", itemBody))
-	}
-}
-
-func (cb noopRebuiltForrestCallbacks) LookupUUID(ctx context.Context, uuid btrfsprim.UUID) (id btrfsprim.ObjID, ok bool) {
-	uuidTree := cb.forrest.RebuiltTree(ctx, btrfsprim.UUID_TREE_OBJECTID)
-	if uuidTree == nil {
-		return 0, false
-	}
-	tgt := btrfsitem.UUIDToKey(uuid)
-	itemPtr, ok := uuidTree.RebuiltAcquireItems(ctx).Load(tgt)
-	uuidTree.RebuiltReleaseItems()
-	if !ok {
-		return 0, false
-	}
-	itemBody := cb.forrest.readItem(ctx, itemPtr)
-	defer itemBody.Free()
-	switch itemBody := itemBody.(type) {
-	case *btrfsitem.UUIDMap:
-		return itemBody.ObjID, true
-	case *btrfsitem.Error:
-		return 0, false
-	default:
-		// This is a panic because the item decoder should not emit UUID_SUBVOL items as anything but
-		// btrfsitem.UUIDMap or btrfsitem.Error without this code also being updated.
-		panic(fmt.Errorf("should not happen: UUID_SUBVOL item has unexpected type: %T", itemBody))
-	}
-}
-
 // RebuiltForrest is an abstraction for rebuilding and accessing
 // potentially broken btrees.
 //
-- 
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