mdb/db-primary.go

@@ -1,67 +0,0 @@
-package mdb
-
-/*
-func (db *Database) openPrimary() (err error) {
-	wal, err := cwal.Open(db.walRootDir, cwal.Config{
-		SegMinCount:  db.conf.WALSegMinCount,
-		SegMaxAgeSec: db.conf.WALSegMaxAgeSec,
-	})
-
-	pFile, err := pfile.Open(db.pageFilePath,
-
-	pFile, err := openPageFileAndReplayWAL(db.rootDir)
-	if err != nil {
-		return err
-	}
-	defer pFile.Close()
-
-	pfHeader, err := pFile.ReadHeader()
-	if err != nil {
-		return err
-	}
-
-	tx := db.Snapshot()
-	tx.seqNum = pfHeader.SeqNum
-	tx.updatedAt = pfHeader.UpdatedAt
-
-	pIndex, err := pagefile.NewIndex(pFile)
-	if err != nil {
-		return err
-	}
-
-	err = pFile.IterateAllocated(pIndex, func(cID, iID uint64, data []byte) error {
-		return db.loadItem(tx, cID, iID, data)
-	})
-	if err != nil {
-		return err
-	}
-
-	w, err := cwal.OpenWriter(db.walRootDir, &cwal.WriterConfig{
-		SegMinCount:  db.conf.WALSegMinCount,
-		SegMaxAgeSec: db.conf.WALSegMaxAgeSec,
-	})
-	if err != nil {
-		return err
-	}
-
-	db.done.Add(1)
-	go txAggregator{
-		Stop:     db.stop,
-		Done:     db.done,
-		ModChan:  db.modChan,
-		W:        w,
-		Index:    pIndex,
-		Snapshot: db.snapshot,
-	}.Run()
-
-	db.done.Add(1)
-	go (&fileWriter{
-		Stop:         db.stop,
-		Done:         db.done,
-		PageFilePath: db.pageFilePath,
-		WALRootDir:   db.walRootDir,
-	}).Run()
-
-	return nil
-}
-*/

mdb/db-secondary.go

@@ -1,129 +0,0 @@
-package mdb
-
-/*
-func (db *Database) openSecondary() (err error) {
-	if db.shouldLoadFromPrimary() {
-		if err := db.loadFromPrimary(); err != nil {
-			return err
-		}
-	}
-
-	log.Printf("Opening page-file...")
-
-	pFile, err := openPageFileAndReplayWAL(db.rootDir)
-	if err != nil {
-		return err
-	}
-	defer pFile.Close()
-
-	pfHeader, err := pFile.ReadHeader()
-	if err != nil {
-		return err
-	}
-
-	log.Printf("Building page-file index...")
-
-	pIndex, err := pagefile.NewIndex(pFile)
-	if err != nil {
-		return err
-	}
-
-	tx := db.Snapshot()
-	tx.seqNum = pfHeader.SeqNum
-	tx.updatedAt = pfHeader.UpdatedAt
-
-	log.Printf("Loading data into memory...")
-
-	err = pFile.IterateAllocated(pIndex, func(cID, iID uint64, data []byte) error {
-		return db.loadItem(tx, cID, iID, data)
-	})
-	if err != nil {
-		return err
-	}
-
-	log.Printf("Creating writer...")
-
-	w, err := cswal.OpenWriter(db.walRootDir, &cswal.WriterConfig{
-		SegMinCount:  db.conf.WALSegMinCount,
-		SegMaxAgeSec: db.conf.WALSegMaxAgeSec,
-	})
-	if err != nil {
-		return err
-	}
-
-	db.done.Add(1)
-	go (&walFollower{
-		Stop:   db.stop,
-		Done:   db.done,
-		W:      w,
-		Client: NewClient(db.conf.PrimaryURL, db.conf.ReplicationPSK, db.conf.NetTimeout),
-	}).Run()
-
-	db.done.Add(1)
-	go (&follower{
-		Stop:         db.stop,
-		Done:         db.done,
-		WALRootDir:   db.walRootDir,
-		SeqNum:       pfHeader.SeqNum,
-		ApplyChanges: db.applyChanges,
-	}).Run()
-
-	db.done.Add(1)
-	go (&fileWriter{
-		Stop:         db.stop,
-		Done:         db.done,
-		PageFilePath: db.pageFilePath,
-		WALRootDir:   db.walRootDir,
-	}).Run()
-
-	return nil
-}
-
-func (db *Database) shouldLoadFromPrimary() bool {
-	if _, err := os.Stat(db.walRootDir); os.IsNotExist(err) {
-		log.Printf("WAL doesn't exist.")
-		return true
-	}
-	if _, err := os.Stat(db.pageFilePath); os.IsNotExist(err) {
-		log.Printf("Page-file doesn't exist.")
-		return true
-	}
-	return false
-}
-
-func (db *Database) loadFromPrimary() error {
-	client := NewClient(db.conf.PrimaryURL, db.conf.ReplicationPSK, db.conf.NetTimeout)
-	defer client.Disconnect()
-
-	log.Printf("Loading data from primary...")
-
-	if err := os.RemoveAll(db.pageFilePath); err != nil {
-		log.Printf("Failed to remove page-file: %s", err)
-		return errs.IO.WithErr(err) // Caller can retry.
-	}
-
-	if err := os.RemoveAll(db.walRootDir); err != nil {
-		log.Printf("Failed to remove WAL: %s", err)
-		return errs.IO.WithErr(err) // Caller can retry.
-	}
-
-	err := client.DownloadPageFile(db.pageFilePath+".tmp", db.pageFilePath)
-	if err != nil {
-		log.Printf("Failed to get page-file from primary: %s", err)
-		return err // Caller can retry.
-	}
-
-	pfHeader, err := pagefile.ReadHeader(db.pageFilePath)
-	if err != nil {
-		log.Printf("Failed to read page-file sequence number: %s", err)
-		return err // Caller can retry.
-	}
-
-	if err = cswal.CreateEx(db.walRootDir, pfHeader.SeqNum+1); err != nil {
-		log.Printf("Failed to initialize WAL: %s", err)
-		return err // Caller can retry.
-	}
-
-	return nil
-}
-*/