initial setup

6 files changed, 175 insertions, 0 deletions

diff --git a/go.mod b/go.mod
index 6176714c0..62c09d8f2 100644
--- a/go.mod
+++ b/go.mod
@@ -169,6 +169,7 @@ require (
 	github.com/DataDog/zstd v1.3.6-0.20190409195224-796139022798 // indirect
 	github.com/d4l3k/messagediff v1.2.1 // indirect
 	github.com/gogo/protobuf v1.3.2 // indirect
+	github.com/hanwen/go-fuse/v2 v2.1.0 // indirect
 	github.com/jcmturner/aescts/v2 v2.0.0 // indirect
 	github.com/jcmturner/dnsutils/v2 v2.0.0 // indirect
 	github.com/jcmturner/goidentity/v6 v6.0.1 // indirect
diff --git a/go.sum b/go.sum
index 7aa37b888..b1db2fdbf 100644
--- a/go.sum
+++ b/go.sum
@@ -415,6 +415,10 @@ github.com/grpc-ecosystem/grpc-gateway v1.9.5/go.mod h1:vNeuVxBJEsws4ogUvrchl83t
 github.com/grpc-ecosystem/grpc-gateway v1.16.0/go.mod h1:BDjrQk3hbvj6Nolgz8mAMFbcEtjT1g+wF4CSlocrBnw=
 github.com/hailocab/go-hostpool v0.0.0-20160125115350-e80d13ce29ed h1:5upAirOpQc1Q53c0bnx2ufif5kANL7bfZWcc6VJWJd8=
 github.com/hailocab/go-hostpool v0.0.0-20160125115350-e80d13ce29ed/go.mod h1:tMWxXQ9wFIaZeTI9F+hmhFiGpFmhOHzyShyFUhRm0H4=
+github.com/hanwen/go-fuse v1.0.0 h1:GxS9Zrn6c35/BnfiVsZVWmsG803xwE7eVRDvcf/BEVc=
+github.com/hanwen/go-fuse v1.0.0/go.mod h1:unqXarDXqzAk0rt98O2tVndEPIpUgLD9+rwFisZH3Ok=
+github.com/hanwen/go-fuse/v2 v2.1.0 h1:+32ffteETaLYClUj0a3aHjZ1hOPxxaNEHiZiujuDaek=
+github.com/hanwen/go-fuse/v2 v2.1.0/go.mod h1:oRyA5eK+pvJyv5otpO/DgccS8y/RvYMaO00GgRLGryc=
 github.com/hashicorp/consul/api v1.3.0/go.mod h1:MmDNSzIMUjNpY/mQ398R4bk2FnqQLoPndWW5VkKPlCE=
 github.com/hashicorp/consul/sdk v0.3.0/go.mod h1:VKf9jXwCTEY1QZP2MOLRhb5i/I/ssyNV1vwHyQBF0x8=
 github.com/hashicorp/errwrap v1.0.0 h1:hLrqtEDnRye3+sgx6z4qVLNuviH3MR5aQ0ykNJa/UYA=
@@ -512,6 +516,7 @@ github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
 github.com/kurin/blazer v0.5.3 h1:SAgYv0TKU0kN/ETfO5ExjNAPyMt2FocO2s/UlCHfjAk=
 github.com/kurin/blazer v0.5.3/go.mod h1:4FCXMUWo9DllR2Do4TtBd377ezyAJ51vB5uTBjt0pGU=
+github.com/kylelemons/godebug v0.0.0-20170820004349-d65d576e9348/go.mod h1:B69LEHPfb2qLo0BaaOLcbitczOKLWTsrBG9LczfCD4k=
 github.com/lib/pq v1.1.1/go.mod h1:5WUZQaWbwv1U+lTReE5YruASi9Al49XbQIvNi/34Woo=
 github.com/lib/pq v1.10.0 h1:Zx5DJFEYQXio93kgXnQ09fXNiUKsqv4OUEu2UtGcB1E=
 github.com/lib/pq v1.10.0/go.mod h1:AlVN5x4E4T544tWzH6hKfbfQvm3HdbOxrmggDNAPY9o=
diff --git a/weed/command/command.go b/weed/command/command.go
index dbc18a053..c6665a7be 100644
--- a/weed/command/command.go
+++ b/weed/command/command.go
@@ -30,6 +30,7 @@ var Commands = []*Command{
 	cmdMaster,
 	cmdMasterFollower,
 	cmdMount,
+	cmdMount2,
 	cmdS3,
 	cmdIam,
 	cmdMsgBroker,
diff --git a/weed/command/mount2.go b/weed/command/mount2.go
new file mode 100644
index 000000000..d7b125c6f
--- /dev/null
+++ b/weed/command/mount2.go
@@ -0,0 +1,83 @@
+package command
+
+import (
+	"os"
+	"time"
+)
+
+type Mount2Options struct {
+	filer              *string
+	filerMountRootPath *string
+	dir                *string
+	dirAutoCreate      *bool
+	collection         *string
+	replication        *string
+	diskType           *string
+	ttlSec             *int
+	chunkSizeLimitMB   *int
+	concurrentWriters  *int
+	cacheDir           *string
+	cacheSizeMB        *int64
+	dataCenter         *string
+	allowOthers        *bool
+	umaskString        *string
+	nonempty           *bool
+	volumeServerAccess *string
+	uidMap             *string
+	gidMap             *string
+	readOnly           *bool
+	debug              *bool
+	debugPort          *int
+}
+
+var (
+	mount2Options Mount2Options
+)
+
+func init() {
+	cmdMount2.Run = runMount2 // break init cycle
+	mount2Options.filer = cmdMount2.Flag.String("filer", "localhost:8888", "comma-separated weed filer location")
+	mount2Options.filerMountRootPath = cmdMount2.Flag.String("filer.path", "/", "mount this remote path from filer server")
+	mount2Options.dir = cmdMount2.Flag.String("dir", ".", "mount weed filer to this directory")
+	mount2Options.dirAutoCreate = cmdMount2.Flag.Bool("dirAutoCreate", false, "auto create the directory to mount to")
+	mount2Options.collection = cmdMount2.Flag.String("collection", "", "collection to create the files")
+	mount2Options.replication = cmdMount2.Flag.String("replication", "", "replication(e.g. 000, 001) to create to files. If empty, let filer decide.")
+	mount2Options.diskType = cmdMount2.Flag.String("disk", "", "[hdd|ssd|<tag>] hard drive or solid state drive or any tag")
+	mount2Options.ttlSec = cmdMount2.Flag.Int("ttl", 0, "file ttl in seconds")
+	mount2Options.chunkSizeLimitMB = cmdMount2.Flag.Int("chunkSizeLimitMB", 2, "local write buffer size, also chunk large files")
+	mount2Options.concurrentWriters = cmdMount2.Flag.Int("concurrentWriters", 32, "limit concurrent goroutine writers if not 0")
+	mount2Options.cacheDir = cmdMount2.Flag.String("cacheDir", os.TempDir(), "local cache directory for file chunks and meta data")
+	mount2Options.cacheSizeMB = cmdMount2.Flag.Int64("cacheCapacityMB", 1000, "local file chunk cache capacity in MB (0 will disable cache)")
+	mount2Options.dataCenter = cmdMount2.Flag.String("dataCenter", "", "prefer to write to the data center")
+	mount2Options.allowOthers = cmdMount2.Flag.Bool("allowOthers", true, "allows other users to access the file system")
+	mount2Options.umaskString = cmdMount2.Flag.String("umask", "022", "octal umask, e.g., 022, 0111")
+	mount2Options.nonempty = cmdMount2.Flag.Bool("nonempty", false, "allows the mounting over a non-empty directory")
+	mount2Options.volumeServerAccess = cmdMount2.Flag.String("volumeServerAccess", "direct", "access volume servers by [direct|publicUrl|filerProxy]")
+	mount2Options.uidMap = cmdMount2.Flag.String("map.uid", "", "map local uid to uid on filer, comma-separated <local_uid>:<filer_uid>")
+	mount2Options.gidMap = cmdMount2.Flag.String("map.gid", "", "map local gid to gid on filer, comma-separated <local_gid>:<filer_gid>")
+	mount2Options.readOnly = cmdMount2.Flag.Bool("readOnly", false, "read only")
+	mount2Options.debug = cmdMount2.Flag.Bool("debug", false, "serves runtime profiling data, e.g., http://localhost:<debug.port>/debug/pprof/goroutine?debug=2")
+	mount2Options.debugPort = cmdMount2.Flag.Int("debug.port", 6061, "http port for debugging")
+
+	mountCpuProfile = cmdMount2.Flag.String("cpuprofile", "", "cpu profile output file")
+	mountMemProfile = cmdMount2.Flag.String("memprofile", "", "memory profile output file")
+	mountReadRetryTime = cmdMount2.Flag.Duration("readRetryTime", 6*time.Second, "maximum read retry wait time")
+}
+
+var cmdMount2 = &Command{
+	UsageLine: "mount2 -filer=localhost:8888 -dir=/some/dir",
+	Short:     "<WIP> mount weed filer to a directory as file system in userspace(FUSE)",
+	Long: `mount weed filer to userspace.
+
+  Pre-requisites:
+  1) have SeaweedFS master and volume servers running
+  2) have a "weed filer" running
+  These 2 requirements can be achieved with one command "weed server -filer=true"
+
+  This uses github.com/seaweedfs/fuse, which enables writing FUSE file systems on
+  Linux, and OS X.
+
+  On OS X, it requires OSXFUSE (http://osxfuse.github.com/).
+
+  `,
+}
diff --git a/weed/command/mount2_std.go b/weed/command/mount2_std.go
new file mode 100644
index 000000000..795a7864c
--- /dev/null
+++ b/weed/command/mount2_std.go
@@ -0,0 +1,53 @@
+package command
+
+import (
+	"fmt"
+	"github.com/chrislusf/seaweedfs/weed/glog"
+	"github.com/chrislusf/seaweedfs/weed/mount"
+	"github.com/hanwen/go-fuse/v2/fs"
+	"net/http"
+	"os"
+	"strconv"
+	"time"
+
+	"github.com/chrislusf/seaweedfs/weed/util"
+	"github.com/chrislusf/seaweedfs/weed/util/grace"
+)
+
+func runMount2(cmd *Command, args []string) bool {
+
+	if *mountOptions.debug {
+		go http.ListenAndServe(fmt.Sprintf(":%d", *mountOptions.debugPort), nil)
+	}
+
+	grace.SetupProfiling(*mountCpuProfile, *mountMemProfile)
+	if *mountReadRetryTime < time.Second {
+		*mountReadRetryTime = time.Second
+	}
+	util.RetryWaitTime = *mountReadRetryTime
+
+	umask, umaskErr := strconv.ParseUint(*mountOptions.umaskString, 8, 64)
+	if umaskErr != nil {
+		fmt.Printf("can not parse umask %s", *mountOptions.umaskString)
+		return false
+	}
+
+	if len(args) > 0 {
+		return false
+	}
+
+	return RunMount2(&mount2Options, os.FileMode(umask))
+}
+
+func RunMount2(option *Mount2Options, umask os.FileMode) bool {
+
+	opts := &fs.Options{}
+	opts.Debug = true
+	server, err := fs.Mount(*option.dir, &mount.WeedFS{}, opts)
+	if err != nil {
+		glog.Fatalf("Mount fail: %v", err)
+	}
+	server.Wait()
+
+	return true
+}
diff --git a/weed/mount/weedfs.go b/weed/mount/weedfs.go
new file mode 100644
index 000000000..50c87a57f
--- /dev/null
+++ b/weed/mount/weedfs.go
@@ -0,0 +1,32 @@
+package mount
+
+import (
+	"context"
+	"syscall"
+
+	"github.com/hanwen/go-fuse/v2/fs"
+	"github.com/hanwen/go-fuse/v2/fuse"
+)
+
+type WeedFS struct {
+	fs.Inode
+}
+
+func (r *WeedFS) OnAdd(ctx context.Context) {
+	ch := r.NewPersistentInode(
+		ctx, &fs.MemRegularFile{
+			Data: []byte("file.txt"),
+			Attr: fuse.Attr{
+				Mode: 0644,
+			},
+		}, fs.StableAttr{Ino: 2})
+	r.AddChild("file.txt", ch, false)
+}
+
+func (r *WeedFS) Getattr(ctx context.Context, fh fs.FileHandle, out *fuse.AttrOut) syscall.Errno {
+	out.Mode = 0755
+	return 0
+}
+
+var _ = (fs.NodeGetattrer)((*WeedFS)(nil))
+var _ = (fs.NodeOnAdder)((*WeedFS)(nil))