Small refactoring.

go.mod

@@ -5,6 +5,7 @@ go 1.12
 require (
 	github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751 // indirect
 	github.com/alecthomas/units v0.0.0-20190924025748-f65c72e2690d // indirect
+	github.com/anacrolix/torrent v1.1.4
 	github.com/boramalper/magnetico v0.9.0
 	github.com/cheggaaa/pb/v3 v3.0.1
 	github.com/mattn/go-sqlite3 v1.10.0

go.sum

@@ -1,5 +1,6 @@
 bazil.org/fuse v0.0.0-20180421153158-65cc252bf669/go.mod h1:Xbm+BRKSBEpa4q4hTSxohYNQpsxXPbPry4JJWOB3LB8=
 github.com/RoaringBitmap/roaring v0.4.7/go.mod h1:8khRDP4HmeXns4xIj9oGrKSz7XTQiJx2zgh7AcNke4w=
+github.com/RoaringBitmap/roaring v0.4.17 h1:oCYFIFEMSQZrLHpywH7919esI1VSrQZ0pJXkZPGIJ78=
 github.com/RoaringBitmap/roaring v0.4.17/go.mod h1:D3qVegWTmfCaX4Bl5CrBE9hfrSrrXIr8KVNvRsDi1NI=
 github.com/VividCortex/ewma v1.1.1 h1:MnEK4VOv6n0RSY4vtRe3h11qjxL3+t0B8yOL8iMXdcM=
 github.com/VividCortex/ewma v1.1.1/go.mod h1:2Tkkvm3sRDVXaiyucHiACn4cqf7DpdyLvmxzcbUokwA=
@@ -10,35 +11,44 @@ github.com/alecthomas/units v0.0.0-20190924025748-f65c72e2690d h1:UQZhZ2O0vMHr2c
 github.com/alecthomas/units v0.0.0-20190924025748-f65c72e2690d/go.mod h1:rBZYJk541a8SKzHPHnH3zbiI+7dagKZ0cgpgrD7Fyho=
 github.com/anacrolix/dht v0.0.0-20180412060941-24cbf25b72a4/go.mod h1:hQfX2BrtuQsLQMYQwsypFAab/GvHg8qxwVi4OJdR1WI=
 github.com/anacrolix/dht v0.0.0-20181129074040-b09db78595aa/go.mod h1:Ayu4t+5TsHQ07/P8XzRJqVofv7lU4R1ZTT7KW5+SPFA=
+github.com/anacrolix/dht v1.0.1 h1:a7zVMiZWfPiToAUbjMZYeI3UvmsDP3j8vH5EDIAjM9c=
 github.com/anacrolix/dht v1.0.1/go.mod h1:dtcIktBFD8YD/7ZcE5nQuuGGfLxcwa8+18mHl+GU+KA=
 github.com/anacrolix/dht/v2 v2.0.1/go.mod h1:GbTT8BaEtfqab/LPd5tY41f3GvYeii3mmDUK300Ycyo=
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+github.com/boltdb/bolt v1.3.1 h1:JQmyP4ZBrce+ZQu0dY660FMfatumYDLun9hBCUVIkF4=
 github.com/boltdb/bolt v1.3.1/go.mod h1:clJnj/oiGkjum5o1McbSZDSLxVThjynRyGBgiAx27Ps=
 github.com/boramalper/magnetico v0.9.0 h1:QaztD0b2mT+T/l0pXUBL5Smkj7LQLzyaW/UfTzi3Jxo=
 github.com/boramalper/magnetico v0.9.0/go.mod h1:w/1aRTMrCIeb5RSebdXck4p+rcI35SlKvbgOtgEVi2w=
 github.com/bradfitz/iter v0.0.0-20140124041915-454541ec3da2/go.mod h1:PyRFw1Lt2wKX4ZVSQ2mk+PeDa1rxyObEDlApuIsUKuo=
+github.com/bradfitz/iter v0.0.0-20190303215204-33e6a9893b0c h1:FUUopH4brHNO2kJoNN3pV+OBEYmgraLT/KHZrMM69r0=
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@@ -48,20 +58,26 @@ github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/docopt/docopt-go v0.0.0-20180111231733-ee0de3bc6815/go.mod h1:WwZ+bS3ebgob9U8Nd0kOddGdZWjyMGR8Wziv+TBNwSE=
 github.com/dustin/go-humanize v0.0.0-20180421182945-02af3965c54e/go.mod h1:HtrtbFcZ19U5GC7JDqmcUSB87Iq5E25KnS6fMYU6eOk=
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 github.com/dustin/go-humanize v1.0.0/go.mod h1:HtrtbFcZ19U5GC7JDqmcUSB87Iq5E25KnS6fMYU6eOk=
 github.com/edsrzf/mmap-go v0.0.0-20170320065105-0bce6a688712/go.mod h1:YO35OhQPt3KJa3ryjFM5Bs14WD66h8eGKpfaBNrHW5M=
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 github.com/google/pprof v0.0.0-20190515194954-54271f7e092f/go.mod h1:zfwlbNMJ+OItoe0UupaVj+oy1omPYYDuagoSzA8v9mc=
 github.com/gopherjs/gopherjs v0.0.0-20181017120253-0766667cb4d1/go.mod h1:wJfORRmW1u3UXTncJ5qlYoELFm8eSnnEO6hX4iZ3EWY=
@@ -72,6 +88,7 @@ github.com/gorilla/schema v1.1.0/go.mod h1:kgLaKoK1FELgZqMAVxx/5cbj0kT+57qxUrAlI
 github.com/gosuri/uilive v0.0.0-20170323041506-ac356e6e42cd/go.mod h1:qkLSc0A5EXSP6B04TrN4oQoxqFI7A8XvoXSlJi8cwk8=
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@@ -91,7 +108,9 @@ github.com/mattn/go-sqlite3 v1.7.0/go.mod h1:FPy6KqzDD04eiIsT53CuJW3U88zkxoIYsOq
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@@ -99,12 +118,14 @@ github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINE
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@@ -115,11 +136,14 @@ github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJy
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 github.com/willf/bitset v1.1.10/go.mod h1:RjeCKbqT1RxIR/KWY6phxZiaY1IyutSBfGjNPySAYV4=
 github.com/willf/bloom v0.0.0-20170505221640-54e3b963ee16/go.mod h1:MmAltL9pDMNTrvUkxdg0k0q5I0suxmuwp3KbyrZLOZ8=
+github.com/willf/bloom v2.0.3+incompatible h1:QDacWdqcAUI1MPOwIQZRy9kOR7yxfyEmxX8Wdm2/JPA=
 github.com/willf/bloom v2.0.3+incompatible/go.mod h1:MmAltL9pDMNTrvUkxdg0k0q5I0suxmuwp3KbyrZLOZ8=
 go.uber.org/atomic v1.4.0 h1:cxzIVoETapQEqDhQu3QfnvXAV4AlzcvUCxkVUFw3+EU=
 go.uber.org/atomic v1.4.0/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE=
@@ -132,6 +156,7 @@ golang.org/x/crypto v0.0.0-20190513172903-22d7a77e9e5f/go.mod h1:yigFU9vqHzYiE8U
 golang.org/x/net v0.0.0-20180524181706-dfa909b99c79/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20181220203305-927f97764cc3/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20190318221613-d196dffd7c2b/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
+golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3 h1:0GoQqolDA55aaLxZyTzK/Y2ePZzZTUrRacwib7cNsYQ=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/sys v0.0.0-20190102155601-82a175fd1598/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
@@ -144,6 +169,7 @@ golang.org/x/sys v0.0.0-20190516110030-61b9204099cb/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/time v0.0.0-20180412165947-fbb02b2291d2/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20181108054448-85acf8d2951c/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
+golang.org/x/time v0.0.0-20190308202827-9d24e82272b4 h1:SvFZT6jyqRaOeXpc5h/JSfZenJ2O330aBsf7JfSUXmQ=
 golang.org/x/time v0.0.0-20190308202827-9d24e82272b4/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 gopkg.in/alecthomas/kingpin.v2 v2.2.6 h1:jMFz6MfLP0/4fUyZle81rXUoxOBFi19VUFKVDOQfozc=
 gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=

magnetico-migrator.go

@@ -10,11 +10,14 @@ import (
 	"go.uber.org/zap"
 	"gopkg.in/alecthomas/kingpin.v2"
 	"net/url"
+	"time"
 )
 
 var (
 	goDatabaseUrl = kingpin.Flag("go-database", "magneticod Go version database URL.").Short('g').String()
 	pyDatabaseUrl = kingpin.Flag("py-database", "Python version database URL.").Short('p').Required().String()
+
+	progress pb.ProgressBar
 )
 
 func main() {
@@ -41,22 +44,24 @@ func main() {
 	}
 	defer pyDatabase.Close()
 
-	err = process(*pyDatabase, goDatabase)
+	torrentsTotal, err := getNumberOfTorrents(*pyDatabase)
-	if err != nil {
-		logger.Error("Error while processing data", zap.Error(err))
-	}
-}
-
-func process(pyDb sql.DB, goDb persistence.Database) error {
-	torrentsTotal, err := getNumberOfTorrents(pyDb)
 	if err != nil {
 		zap.L().Panic("Couldn't count torrents", zap.Error(err))
 	}
 
-	bar := pb.New(int(torrentsTotal))
+	progress = *pb.New(int(torrentsTotal))
-	//bar.SetRefreshRate(time.Second)
+	progress.SetRefreshRate(time.Second)
-	bar.Start()
+	progress.Start()
 
+	err = mergeDatabases(*pyDatabase, goDatabase)
+	if err != nil {
+		logger.Error("Error while processing data", zap.Error(err))
+	}
+
+	progress.Finish()
+}
+
+func mergeDatabases(pyDb sql.DB, goDb persistence.Database) error {
 	// Selecting torrents
 	tRows, err := pyDb.Query("SELECT id, info_hash, name, total_size, discovered_on FROM torrents ORDER BY id ASC;")
 	if err != nil {
@@ -64,59 +69,74 @@ func process(pyDb sql.DB, goDb persistence.Database) error {
 	}
 	defer tRows.Close()
 
-	torrentLoop:
 	for tRows.Next() {
 		var torrent persistence.TorrentMetadata
 
-		bar.Increment()
+		progress.Increment()
 
 		err := tRows.Scan(&torrent.ID, &torrent.InfoHash, &torrent.Name, &torrent.Size, &torrent.DiscoveredOn)
 		if err != nil {
 			zap.L().Error("Error scanning torrent row.", zap.Error(err))
-			continue
-		}
-
-		// Selecting files for torrent
-		fRows, err := pyDb.Query("SELECT f.path, f.size FROM files AS f WHERE f.torrent_id = ? ORDER BY f.id ASC;", torrent.ID)
-		if err != nil {
-			zap.L().Fatal("Error when querying files for torrent.", zap.Uint64("torrent_id", torrent.ID))
-		}
-		defer fRows.Close()
-
-		files := make([]persistence.File, 0)
-
-		for fRows.Next() {
-			var file persistence.File
-			err := fRows.Scan(&file.Path, &file.Size)
-			fRows.Close()
-			if err != nil {
-				zap.L().Error("Error scanning file row", zap.Uint64("torrent_id", torrent.ID), zap.Error(err))
-				continue torrentLoop
-			}
-
-			files = append(files, file)
-		}
-
-		exists, err := goDb.DoesTorrentExist(torrent.InfoHash)
-		if err != nil {
-			zap.L().Error("Error checking torrent existence.", zap.String("hash", hex.EncodeToString(torrent.InfoHash)), zap.Error(err))
 
 			continue
 		}
 
-		if !exists {
+		files, err := getFilesForTorrent(pyDb, torrent)
-			err = goDb.AddNewTorrent(torrent.InfoHash, torrent.Name, files)
+		if err != nil {
-			if err != nil {
+			zap.L().Error("Error getting files for torrent.", zap.String("hash", hex.EncodeToString(torrent.InfoHash)), zap.Error(err))
-				zap.L().Error("Error adding torrent to Go database.", zap.String("hash", hex.EncodeToString(torrent.InfoHash)), zap.Error(err))
+
-			}
+			continue
+		}
+
+		err = importTorrent(goDb, torrent, files)
+		if err != nil {
+			zap.L().Error("Error when importing torrent to Go database.", zap.String("hash", hex.EncodeToString(torrent.InfoHash)), zap.Error(err))
 		}
 	}
 
-	bar.Finish()
+	return nil
+}
+
+func importTorrent(goDb persistence.Database, torrent persistence.TorrentMetadata, files []persistence.File) error {
+	exists, err := goDb.DoesTorrentExist(torrent.InfoHash)
+	if err != nil {
+		return err
+	}
+
+	if !exists {
+		err = goDb.AddNewTorrent(torrent.InfoHash, torrent.Name, files)
+		if err != nil {
+			return err
+		}
+	}
 
 	return nil
 }
 
+func getFilesForTorrent(pyDb sql.DB, torrent persistence.TorrentMetadata) ([]persistence.File, error) {
+	files := make([]persistence.File, 0)
+
+	// Selecting files for torrent
+	fRows, err := pyDb.Query("SELECT f.path, f.size FROM files AS f WHERE f.torrent_id = ? ORDER BY f.id ASC;", torrent.ID)
+	if err != nil {
+		return files, nil
+	}
+	defer fRows.Close()
+
+	for fRows.Next() {
+		var file persistence.File
+		err := fRows.Scan(&file.Path, &file.Size)
+		fRows.Close()
+		if err != nil {
+			return files, err
+		}
+
+		files = append(files, file)
+	}
+
+	return files, nil
+}
+
 func getNumberOfTorrents(db sql.DB) (uint, error) {
 	rows, err := db.Query("SELECT COUNT(id) FROM torrents;")
 	if err != nil {