lib/db need not depend on lib/config

lib/db/blockmap.go

@@ -16,12 +16,9 @@ import (
 	"bytes"
 	"encoding/binary"
 	"fmt"
-	"sort"
 
 	"github.com/syncthing/protocol"
-	"github.com/syncthing/syncthing/lib/config"
 	"github.com/syncthing/syncthing/lib/osutil"
-	"github.com/syncthing/syncthing/lib/sync"
 
 	"github.com/syndtr/goleveldb/leveldb"
 	"github.com/syndtr/goleveldb/leveldb/util"
@@ -112,48 +109,21 @@ func (m *BlockMap) blockKey(hash []byte, file string) []byte {
 }
 
 type BlockFinder struct {
-	db      *leveldb.DB
-	folders []string
-	mut     sync.RWMutex
+	db *leveldb.DB
 }
 
-func NewBlockFinder(db *leveldb.DB, cfg *config.Wrapper) *BlockFinder {
+func NewBlockFinder(db *leveldb.DB) *BlockFinder {
 	if blockFinder != nil {
 		return blockFinder
 	}
 
 	f := &BlockFinder{
-		db:  db,
-		mut: sync.NewRWMutex(),
+		db: db,
 	}
 
-	f.CommitConfiguration(config.Configuration{}, cfg.Raw())
-	cfg.Subscribe(f)
-
 	return f
 }
 
-// VerifyConfiguration implementes the config.Committer interface
-func (f *BlockFinder) VerifyConfiguration(from, to config.Configuration) error {
-	return nil
-}
-
-// CommitConfiguration implementes the config.Committer interface
-func (f *BlockFinder) CommitConfiguration(from, to config.Configuration) bool {
-	folders := make([]string, len(to.Folders))
-	for i, folder := range to.Folders {
-		folders[i] = folder.ID
-	}
-
-	sort.Strings(folders)
-
-	f.mut.Lock()
-	f.folders = folders
-	f.mut.Unlock()
-
-	return true
-}
-
 func (f *BlockFinder) String() string {
 	return fmt.Sprintf("BlockFinder@%p", f)
 }
@@ -163,10 +133,7 @@ func (f *BlockFinder) String() string {
 // they are happy with the block) or false to continue iterating for whatever
 // reason. The iterator finally returns the result, whether or not a
 // satisfying block was eventually found.
-func (f *BlockFinder) Iterate(hash []byte, iterFn func(string, string, int32) bool) bool {
-	f.mut.RLock()
-	folders := f.folders
-	f.mut.RUnlock()
+func (f *BlockFinder) Iterate(folders []string, hash []byte, iterFn func(string, string, int32) bool) bool {
 	for _, folder := range folders {
 		key := toBlockKey(hash, folder, "")
 		iter := f.db.NewIterator(util.BytesPrefix(key), nil)

lib/db/blockmap_test.go

@@ -10,7 +10,6 @@ import (
 	"testing"
 
 	"github.com/syncthing/protocol"
-	"github.com/syncthing/syncthing/lib/config"
 
 	"github.com/syndtr/goleveldb/leveldb"
 	"github.com/syndtr/goleveldb/leveldb/storage"
@@ -30,6 +29,7 @@ func genBlocks(n int) []protocol.BlockInfo {
 }
 
 var f1, f2, f3 protocol.FileInfo
+var folders = []string{"folder1", "folder2"}
 
 func init() {
 	blocks := genBlocks(30)
@@ -57,16 +57,7 @@ func setup() (*leveldb.DB, *BlockFinder) {
 	if err != nil {
 		panic(err)
 	}
-
-	wrapper := config.Wrap("", config.Configuration{})
-	wrapper.SetFolder(config.FolderConfiguration{
-		ID: "folder1",
-	})
-	wrapper.SetFolder(config.FolderConfiguration{
-		ID: "folder2",
-	})
-
-	return db, NewBlockFinder(db, wrapper)
+	return db, NewBlockFinder(db)
 }
 
 func dbEmpty(db *leveldb.DB) bool {
@@ -94,21 +85,21 @@ func TestBlockMapAddUpdateWipe(t *testing.T) {
 		t.Fatal(err)
 	}
 
-	f.Iterate(f1.Blocks[0].Hash, func(folder, file string, index int32) bool {
+	f.Iterate(folders, f1.Blocks[0].Hash, func(folder, file string, index int32) bool {
 		if folder != "folder1" || file != "f1" || index != 0 {
 			t.Fatal("Mismatch")
 		}
 		return true
 	})
 
-	f.Iterate(f2.Blocks[0].Hash, func(folder, file string, index int32) bool {
+	f.Iterate(folders, f2.Blocks[0].Hash, func(folder, file string, index int32) bool {
 		if folder != "folder1" || file != "f2" || index != 0 {
 			t.Fatal("Mismatch")
 		}
 		return true
 	})
 
-	f.Iterate(f3.Blocks[0].Hash, func(folder, file string, index int32) bool {
+	f.Iterate(folders, f3.Blocks[0].Hash, func(folder, file string, index int32) bool {
 		t.Fatal("Unexpected block")
 		return true
 	})
@@ -123,17 +114,17 @@ func TestBlockMapAddUpdateWipe(t *testing.T) {
 		t.Fatal(err)
 	}
 
-	f.Iterate(f1.Blocks[0].Hash, func(folder, file string, index int32) bool {
+	f.Iterate(folders, f1.Blocks[0].Hash, func(folder, file string, index int32) bool {
 		t.Fatal("Unexpected block")
 		return false
 	})
 
-	f.Iterate(f2.Blocks[0].Hash, func(folder, file string, index int32) bool {
+	f.Iterate(folders, f2.Blocks[0].Hash, func(folder, file string, index int32) bool {
 		t.Fatal("Unexpected block")
 		return false
 	})
 
-	f.Iterate(f3.Blocks[0].Hash, func(folder, file string, index int32) bool {
+	f.Iterate(folders, f3.Blocks[0].Hash, func(folder, file string, index int32) bool {
 		if folder != "folder1" || file != "f3" || index != 0 {
 			t.Fatal("Mismatch")
 		}
@@ -180,7 +171,7 @@ func TestBlockFinderLookup(t *testing.T) {
 	}
 
 	counter := 0
-	f.Iterate(f1.Blocks[0].Hash, func(folder, file string, index int32) bool {
+	f.Iterate(folders, f1.Blocks[0].Hash, func(folder, file string, index int32) bool {
 		counter++
 		switch counter {
 		case 1:
@@ -196,6 +187,7 @@ func TestBlockFinderLookup(t *testing.T) {
 		}
 		return false
 	})
+
 	if counter != 2 {
 		t.Fatal("Incorrect count", counter)
 	}
@@ -208,7 +200,7 @@ func TestBlockFinderLookup(t *testing.T) {
 	}
 
 	counter = 0
-	f.Iterate(f1.Blocks[0].Hash, func(folder, file string, index int32) bool {
+	f.Iterate(folders, f1.Blocks[0].Hash, func(folder, file string, index int32) bool {
 		counter++
 		switch counter {
 		case 1:
@@ -220,6 +212,7 @@ func TestBlockFinderLookup(t *testing.T) {
 		}
 		return false
 	})
+
 	if counter != 1 {
 		t.Fatal("Incorrect count")
 	}
@@ -240,7 +233,7 @@ func TestBlockFinderFix(t *testing.T) {
 		t.Fatal(err)
 	}
 
-	if !f.Iterate(f1.Blocks[0].Hash, iterFn) {
+	if !f.Iterate(folders, f1.Blocks[0].Hash, iterFn) {
 		t.Fatal("Block not found")
 	}
 
@@ -249,11 +242,11 @@ func TestBlockFinderFix(t *testing.T) {
 		t.Fatal(err)
 	}
 
-	if f.Iterate(f1.Blocks[0].Hash, iterFn) {
+	if f.Iterate(folders, f1.Blocks[0].Hash, iterFn) {
 		t.Fatal("Unexpected block")
 	}
 
-	if !f.Iterate(f2.Blocks[0].Hash, iterFn) {
+	if !f.Iterate(folders, f2.Blocks[0].Hash, iterFn) {
 		t.Fatal("Block not found")
 	}
 }

lib/model/model.go

@@ -114,7 +114,7 @@ func NewModel(cfg *config.Wrapper, id protocol.DeviceID, deviceName, clientName,
 		}),
 		cfg:                cfg,
 		db:                 ldb,
-		finder:             db.NewBlockFinder(ldb, cfg),
+		finder:             db.NewBlockFinder(ldb),
 		progressEmitter:    NewProgressEmitter(cfg),
 		id:                 id,
 		shortID:            id.Short(),

lib/model/rwfolder.go

@@ -1107,15 +1107,17 @@ func (p *rwFolder) copierRoutine(in <-chan copyBlocksState, pullChan chan<- pull
 		}
 
 		folderRoots := make(map[string]string)
+		var folders []string
 		p.model.fmut.RLock()
 		for folder, cfg := range p.model.folderCfgs {
 			folderRoots[folder] = cfg.Path()
+			folders = append(folders, folder)
 		}
 		p.model.fmut.RUnlock()
 
 		for _, block := range state.blocks {
 			buf = buf[:int(block.Size)]
-			found := p.model.finder.Iterate(block.Hash, func(folder, file string, index int32) bool {
+			found := p.model.finder.Iterate(folders, block.Hash, func(folder, file string, index int32) bool {
 				fd, err := os.Open(filepath.Join(folderRoots[folder], file))
 				if err != nil {
 					return false

lib/model/rwfolder_test.go

@@ -42,6 +42,8 @@ var blocks = []protocol.BlockInfo{
 	{Offset: 917504, Size: 0x20000, Hash: []uint8{0x96, 0x6b, 0x15, 0x6b, 0xc4, 0xf, 0x19, 0x18, 0xca, 0xbb, 0x5f, 0xd6, 0xbb, 0xa2, 0xc6, 0x2a, 0xac, 0xbb, 0x8a, 0xb9, 0xce, 0xec, 0x4c, 0xdb, 0x78, 0xec, 0x57, 0x5d, 0x33, 0xf9, 0x8e, 0xaf}},
 }
 
+var folders = []string{"default"}
+
 // Layout of the files: (indexes from the above array)
 // 12345678 - Required file
 // 02005008 - Existing file (currently in the index)
@@ -197,7 +199,7 @@ func TestCopierFinder(t *testing.T) {
 
 	// Verify that the blocks we say exist on file, really exist in the db.
 	for _, idx := range []int{2, 3, 4, 7} {
-		if m.finder.Iterate(blocks[idx].Hash, iterFn) == false {
+		if m.finder.Iterate(folders, blocks[idx].Hash, iterFn) == false {
 			t.Error("Didn't find block")
 		}
 	}
@@ -277,7 +279,7 @@ func TestCopierCleanup(t *testing.T) {
 	// Add file to index
 	m.updateLocals("default", []protocol.FileInfo{file})
 
-	if !m.finder.Iterate(blocks[0].Hash, iterFn) {
+	if !m.finder.Iterate(folders, blocks[0].Hash, iterFn) {
 		t.Error("Expected block not found")
 	}
 
@@ -286,11 +288,11 @@ func TestCopierCleanup(t *testing.T) {
 	// Update index (removing old blocks)
 	m.updateLocals("default", []protocol.FileInfo{file})
 
-	if m.finder.Iterate(blocks[0].Hash, iterFn) {
+	if m.finder.Iterate(folders, blocks[0].Hash, iterFn) {
 		t.Error("Unexpected block found")
 	}
 
-	if !m.finder.Iterate(blocks[1].Hash, iterFn) {
+	if !m.finder.Iterate(folders, blocks[1].Hash, iterFn) {
 		t.Error("Expected block not found")
 	}
 
@@ -299,11 +301,11 @@ func TestCopierCleanup(t *testing.T) {
 	// Update index (removing old blocks)
 	m.updateLocals("default", []protocol.FileInfo{file})
 
-	if !m.finder.Iterate(blocks[0].Hash, iterFn) {
+	if !m.finder.Iterate(folders, blocks[0].Hash, iterFn) {
 		t.Error("Unexpected block found")
 	}
 
-	if m.finder.Iterate(blocks[1].Hash, iterFn) {
+	if m.finder.Iterate(folders, blocks[1].Hash, iterFn) {
 		t.Error("Expected block not found")
 	}
 }
@@ -334,7 +336,7 @@ func TestLastResortPulling(t *testing.T) {
 	}
 
 	// Check that that particular block is there
-	if !m.finder.Iterate(blocks[0].Hash, iterFn) {
+	if !m.finder.Iterate(folders, blocks[0].Hash, iterFn) {
 		t.Error("Expected block not found")
 	}
 
@@ -361,11 +363,11 @@ func TestLastResortPulling(t *testing.T) {
 	<-pullChan
 
 	// Verify that it did fix the incorrect hash.
-	if m.finder.Iterate(blocks[0].Hash, iterFn) {
+	if m.finder.Iterate(folders, blocks[0].Hash, iterFn) {
 		t.Error("Found unexpected block")
 	}
 
-	if !m.finder.Iterate(scanner.SHA256OfNothing, iterFn) {
+	if !m.finder.Iterate(folders, scanner.SHA256OfNothing, iterFn) {
 		t.Error("Expected block not found")
 	}