Take advantage of Discord's increased base file size limits

common.go

@@ -5,7 +5,8 @@ import "time"
 const (
 	TxChannelName            = "tx"
 	DataChannelName          = "data"
-	MaxDiscordFileSize       = 8388119
+	MaxDiscordFileSize       = 26214400
+	FileBlockSize            = 8388119
 	MaxDiscordMessageRequest = 100
 	MaxDiscordFileCount      = 10
 	PollInterval             = 250 * time.Millisecond

fs.go

@@ -156,7 +156,7 @@ func (fs *Dsfs) Open(path string, flags int) (int, uint64) {
 	// other than the root folder, since some file explorers like to eagerly
 	// prob files for thumbnails, etc.
 	go func() {
-		buffer := make([]byte, MaxDiscordFileSize)
+		buffer := make([]byte, FileBlockSize)
 
 		dlID := func(id string, ofst int) error {
 			file, ok := fs.open[path]
@@ -195,14 +195,14 @@ func (fs *Dsfs) Open(path string, flags int) (int, uint64) {
 
 		// Download last piece to simulate torrent streaming behavior
 		lastIdx := len(tx.FileIDs) - 1
-		err = dlID(tx.FileIDs[lastIdx], lastIdx*MaxDiscordFileSize)
+		err = dlID(tx.FileIDs[lastIdx], lastIdx*FileBlockSize)
 		if err != nil {
 			return
 		}
 
 		// Download rest in order
 		for i := 1; i < lastIdx; i++ {
-			err = dlID(tx.FileIDs[i], i*MaxDiscordFileSize)
+			err = dlID(tx.FileIDs[i], i*FileBlockSize)
 			if err != nil {
 				return
 			}
@@ -544,7 +544,7 @@ func (fs *Dsfs) Release(path string, fh uint64) int {
 		up := func(idx int, fileID string, checksum string) error {
 			file.lock.RLock()
 
-			ofst := int64(idx * MaxDiscordFileSize)
+			ofst := int64(idx * FileBlockSize)
 
 			// We need to be very careful about this because we want lock with
 			// quick and correct contention.
@@ -554,7 +554,7 @@ func (fs *Dsfs) Release(path string, fh uint64) int {
 				return nil
 			}
 
-			end := ofst + MaxDiscordFileSize
+			end := ofst + FileBlockSize
 			if end > filesize {
 				end = filesize
 			}
@@ -583,8 +583,8 @@ func (fs *Dsfs) Release(path string, fh uint64) int {
 		}
 
 		filesize := file.cache.Size()
-		end := int(filesize / MaxDiscordFileSize)
-		if filesize%MaxDiscordFileSize != 0 {
+		end := int(filesize / FileBlockSize)
+		if filesize%FileBlockSize != 0 {
 			end++
 		}
 
@@ -723,18 +723,18 @@ func (fs *Dsfs) ApplyLiveTx(path string, tx *Tx) error {
 	file.cache.Truncate(tx.Size)
 	file.lock.Unlock()
 
-	buffer := make([]byte, MaxDiscordFileSize)
+	buffer := make([]byte, FileBlockSize)
 	for idx, checksum := range tx.Checksums {
 		file.lock.Lock()
-		ofst := int64(idx * MaxDiscordFileSize)
+		ofst := int64(idx * FileBlockSize)
 		// Something can happen between truncating and patching memory.
 		// In this case it's really hard to recover.
 		filesize = file.cache.Size()
 		if ofst >= filesize {
 			file.lock.Unlock()
 			return errors.New("file changed while upcoming change is applied")
 		}
-		end := ofst + MaxDiscordFileSize
+		end := ofst + FileBlockSize
 		if end > filesize {
 			end = filesize
 		}

go.mod

@@ -3,28 +3,28 @@ module github.com/darenliang/dsfs
 go 1.18
 
 require (
-	github.com/alecthomas/kingpin/v2 v2.3.1
-	github.com/bwmarrin/discordgo v0.27.0
+	github.com/alecthomas/kingpin/v2 v2.3.2
+	github.com/bwmarrin/discordgo v0.27.1
 	github.com/hashicorp/go-immutable-radix/v2 v2.0.0
 	github.com/json-iterator/go v1.1.12
-	github.com/valyala/fasthttp v1.44.0
-	go.skia.org/infra v0.0.0-20230218031922-8241ca68b380
+	github.com/valyala/fasthttp v1.45.0
+	go.skia.org/infra v0.0.0-20230418151255-2b944a5cb38c
 	go.uber.org/zap v1.24.0
-	golang.org/x/exp v0.0.0-20230213192124-5e25df0256eb
+	golang.org/x/exp v0.0.0-20230321023759-10a507213a29
 )
 
 require (
-	github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf // indirect
-	github.com/andybalholm/brotli v1.0.4 // indirect
+	github.com/alecthomas/units v0.0.0-20211218093645-b94a6e3cc137 // indirect
+	github.com/andybalholm/brotli v1.0.5 // indirect
 	github.com/gorilla/websocket v1.4.2 // indirect
 	github.com/hashicorp/golang-lru/v2 v2.0.0 // indirect
-	github.com/klauspost/compress v1.15.9 // indirect
+	github.com/klauspost/compress v1.16.3 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.2 // indirect
 	github.com/valyala/bytebufferpool v1.0.0 // indirect
-	github.com/xhit/go-str2duration v1.2.0 // indirect
+	github.com/xhit/go-str2duration/v2 v2.1.0 // indirect
 	go.uber.org/atomic v1.7.0 // indirect
 	go.uber.org/multierr v1.6.0 // indirect
-	golang.org/x/crypto v0.0.0-20220214200702-86341886e292 // indirect
-	golang.org/x/sys v0.1.0 // indirect
+	golang.org/x/crypto v0.7.0 // indirect
+	golang.org/x/sys v0.6.0 // indirect
 )

go.sum

@@ -1,12 +1,12 @@
-github.com/alecthomas/kingpin/v2 v2.3.1 h1:ANLJcKmQm4nIaog7xdr/id6FM6zm5hHnfZrvtKPxqGg=
-github.com/alecthomas/kingpin/v2 v2.3.1/go.mod h1:oYL5vtsvEHZGHxU7DMp32Dvx+qL+ptGn6lWaot2vCNE=
-github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf h1:qet1QNfXsQxTZqLG4oE62mJzwPIB8+Tee4RNCL9ulrY=
-github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
-github.com/andybalholm/brotli v1.0.4 h1:V7DdXeJtZscaqfNuAdSRuRFzuiKlHSC/Zh3zl9qY3JY=
-github.com/andybalholm/brotli v1.0.4/go.mod h1:fO7iG3H7G2nSZ7m0zPUDn85XEX2GTukHGRSepvi9Eig=
+github.com/alecthomas/kingpin/v2 v2.3.2 h1:H0aULhgmSzN8xQ3nX1uxtdlTHYoPLu5AhHxWrKI6ocU=
+github.com/alecthomas/kingpin/v2 v2.3.2/go.mod h1:0gyi0zQnjuFk8xrkNKamJoyUo382HRL7ATRpFZCw6tE=
+github.com/alecthomas/units v0.0.0-20211218093645-b94a6e3cc137 h1:s6gZFSlWYmbqAuRjVTiNNhvNRfY2Wxp9nhfyel4rklc=
+github.com/alecthomas/units v0.0.0-20211218093645-b94a6e3cc137/go.mod h1:OMCwj8VM1Kc9e19TLln2VL61YJF0x1XFtfdL4JdbSyE=
+github.com/andybalholm/brotli v1.0.5 h1:8uQZIdzKmjc/iuPu7O2ioW48L81FgatrcpfFmiq/cCs=
+github.com/andybalholm/brotli v1.0.5/go.mod h1:fO7iG3H7G2nSZ7m0zPUDn85XEX2GTukHGRSepvi9Eig=
 github.com/benbjohnson/clock v1.1.0 h1:Q92kusRqC1XV2MjkWETPvjJVqKetz1OzxZB7mHJLju8=
-github.com/bwmarrin/discordgo v0.27.0 h1:4ZK9KN+rGIxZ0fdGTmgdCcliQeW8Zhu6MnlFI92nf0Q=
-github.com/bwmarrin/discordgo v0.27.0/go.mod h1:NJZpH+1AfhIcyQsPeuBKsUtYrRnjkyu0kIVMCHkZtRY=
+github.com/bwmarrin/discordgo v0.27.1 h1:ib9AIc/dom1E/fSIulrBwnez0CToJE113ZGt4HoliGY=
+github.com/bwmarrin/discordgo v0.27.1/go.mod h1:NJZpH+1AfhIcyQsPeuBKsUtYrRnjkyu0kIVMCHkZtRY=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 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=
@@ -20,8 +20,8 @@ github.com/hashicorp/golang-lru/v2 v2.0.0 h1:Lf+9eD8m5pncvHAOCQj49GSN6aQI8XGfI5O
 github.com/hashicorp/golang-lru/v2 v2.0.0/go.mod h1:QeFd9opnmA6QUJc5vARoKUSoFhyfM2/ZepoAG6RGpeM=
 github.com/json-iterator/go v1.1.12 h1:PV8peI4a0ysnczrg+LtxykD8LfKY9ML6u2jnxaEnrnM=
 github.com/json-iterator/go v1.1.12/go.mod h1:e30LSqwooZae/UwlEbR2852Gd8hjQvJoHmT4TnhNGBo=
-github.com/klauspost/compress v1.15.9 h1:wKRjX6JRtDdrE9qwa4b/Cip7ACOshUI4smpCQanqjSY=
-github.com/klauspost/compress v1.15.9/go.mod h1:PhcZ0MbTNciWF3rruxRgKxI5NkcHHrHUDtV4Yw2GlzU=
+github.com/klauspost/compress v1.16.3 h1:XuJt9zzcnaz6a16/OU53ZjWp/v7/42WcR5t2a0PcNQY=
+github.com/klauspost/compress v1.16.3/go.mod h1:ntbaceVETuRiXiv4DpjP66DpAtAGkEQskQzEyD//IeE=
 github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
 github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd h1:TRLaZ9cD/w8PVh93nsPXa1VrQ6jlwL5oN8l14QlcNfg=
 github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
@@ -31,18 +31,17 @@ github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
-github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
-github.com/stretchr/testify v1.8.0 h1:pSgiaMZlXftHpm5L7V1+rVB+AZJydKsMxsQBIJw4PKk=
+github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
+github.com/stretchr/testify v1.8.2 h1:+h33VjcLVPDHtOdpUCuF+7gSuG3yGIftsP1YvFihtJ8=
 github.com/valyala/bytebufferpool v1.0.0 h1:GqA5TC/0021Y/b9FG4Oi9Mr3q7XYx6KllzawFIhcdPw=
 github.com/valyala/bytebufferpool v1.0.0/go.mod h1:6bBcMArwyJ5K/AmCkWv1jt77kVWyCJ6HpOuEn7z0Csc=
-github.com/valyala/fasthttp v1.44.0 h1:R+gLUhldIsfg1HokMuQjdQ5bh9nuXHPIfvkYUu9eR5Q=
-github.com/valyala/fasthttp v1.44.0/go.mod h1:f6VbjjoI3z1NDOZOv17o6RvtRSWxC77seBFc2uWtgiY=
-github.com/valyala/tcplisten v1.0.0/go.mod h1:T0xQ8SeCZGxckz9qRXTfG43PvQ/mcWh7FwZEA7Ioqkc=
-github.com/xhit/go-str2duration v1.2.0 h1:BcV5u025cITWxEQKGWr1URRzrcXtu7uk8+luz3Yuhwc=
-github.com/xhit/go-str2duration v1.2.0/go.mod h1:3cPSlfZlUHVlneIVfePFWcJZsuwf+P1v2SRTV4cUmp4=
-go.skia.org/infra v0.0.0-20230218031922-8241ca68b380 h1:J1Zt3vWxmLjso5OykhpTxoA8scfFOztaFcAcrdLtvF0=
-go.skia.org/infra v0.0.0-20230218031922-8241ca68b380/go.mod h1:gpm6L4QeVrn1ZJXPpQ6o5nLGj3oapPhfjvH0RAFgl8o=
+github.com/valyala/fasthttp v1.45.0 h1:zPkkzpIn8tdHZUrVa6PzYd0i5verqiPSkgTd3bSUcpA=
+github.com/valyala/fasthttp v1.45.0/go.mod h1:k2zXd82h/7UZc3VOdJ2WaUqt1uZ/XpXAfE9i+HBC3lA=
+github.com/xhit/go-str2duration/v2 v2.1.0 h1:lxklc02Drh6ynqX+DdPyp5pCKLUQpRT8bp8Ydu2Bstc=
+github.com/xhit/go-str2duration/v2 v2.1.0/go.mod h1:ohY8p+0f07DiV6Em5LKB0s2YpLtXVyJfNt1+BlmyAsU=
+go.skia.org/infra v0.0.0-20230418151255-2b944a5cb38c h1:KAayDfpXuoLc//HgEWoQlA6eiXzmJ1xXCB/zbfpFxWk=
+go.skia.org/infra v0.0.0-20230418151255-2b944a5cb38c/go.mod h1:9oYg+lQZEkY/CRNPWWYO0sAMX5l2UkPXLbi79xI8XmU=
 go.uber.org/atomic v1.7.0 h1:ADUqmZGgLDDfbSL9ZmPxKTybcoEYHgpYfELNoN+7hsw=
 go.uber.org/atomic v1.7.0/go.mod h1:fEN4uk6kAWBTFdckzkM89CLk9XfWZrxpCo0nPH17wJc=
 go.uber.org/goleak v1.1.11 h1:wy28qYRKZgnJTxGxvye5/wgWr1EKjmUDGYox5mGlRlI=
@@ -51,23 +50,17 @@ go.uber.org/multierr v1.6.0/go.mod h1:cdWPpRnG4AhwMwsgIHip0KRBQjJy5kYEpYjJxpXp9i
 go.uber.org/zap v1.24.0 h1:FiJd5l1UOLj0wCgbSE0rwwXHzEdAZS6hiiSnxJN/D60=
 go.uber.org/zap v1.24.0/go.mod h1:2kMP+WWQ8aoFoedH3T2sq6iJ2yDWpHbP0f6MQbS9Gkg=
 golang.org/x/crypto v0.0.0-20210421170649-83a5a9bb288b/go.mod h1:T9bdIzuCu7OtxOm1hfPfRQxPLYneinmdGuTeoZ9dtd4=
-golang.org/x/crypto v0.0.0-20220214200702-86341886e292 h1:f+lwQ+GtmgoY+A2YaQxlSOnDjXcQ7ZRLWOHbC6HtRqE=
-golang.org/x/crypto v0.0.0-20220214200702-86341886e292/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
-golang.org/x/exp v0.0.0-20230213192124-5e25df0256eb h1:PaBZQdo+iSDyHT053FjUCgZQ/9uqVwPOcl7KSWhKn6w=
-golang.org/x/exp v0.0.0-20230213192124-5e25df0256eb/go.mod h1:CxIveKay+FTh1D0yPZemJVgC/95VzuuOLq5Qi4xnoYc=
+golang.org/x/crypto v0.7.0 h1:AvwMYaRytfdeVt3u6mLaxYtErKYjxA2OXjJ1HHq6t3A=
+golang.org/x/crypto v0.7.0/go.mod h1:pYwdfH91IfpZVANVyUOhSIPZaFoJGxTFbZhFTx+dXZU=
+golang.org/x/exp v0.0.0-20230321023759-10a507213a29 h1:ooxPy7fPvB4kwsA2h+iBNHkAbp/4JxTSwCmvdjEYmug=
+golang.org/x/exp v0.0.0-20230321023759-10a507213a29/go.mod h1:CxIveKay+FTh1D0yPZemJVgC/95VzuuOLq5Qi4xnoYc=
 golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
-golang.org/x/net v0.0.0-20211112202133-69e39bad7dc2/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
-golang.org/x/net v0.0.0-20220906165146-f3363e06e74c/go.mod h1:YDH+HFinaLZZlnHAfSS6ZXJJ9M9t4Dl22yv3iI2vPwk=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20220728004956-3c1f35247d10/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.1.0 h1:kunALQeHf1/185U1i0GOB/fy1IPRDDpuoOOqRReG57U=
-golang.org/x/sys v0.1.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.6.0 h1:MVltZSvRTcU2ljQOhs94SXPftV6DCNnZViHeQps87pQ=
+golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
-golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
-golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
-golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=