badjware
/
gitforgefs
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start of fuse filesystem implementation

This commit is contained in:
Massaki Archambault 2020-12-27 02:23:00 -05:00
parent 40e5dbca80
commit 2542edc3b7
9 changed files with 249 additions and 58 deletions
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9
Makefile
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@ -54,10 +54,15 @@ lint:
$(GOFMT) ./...
# run: run without building with debug flags
ifeq (run,$(firstword $(MAKECMDGOALS)))
# use the rest as arguments for "run"
RUN_ARGS := $(wordlist 2,$(words $(MAKECMDGOALS)),$(MAKECMDGOALS))
# ...and turn them into do-nothing targets
$(eval $(RUN_ARGS):;@:)
endif
.PHONY: run
run: lint
$(GORUN) main.go
$(GORUN) main.go $(RUN_ARGS)
# prepare: prepare environment for build

27
fs/filesystem.go Normal file
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@ -0,0 +1,27 @@
package fs
import (
"fmt"
"github.com/badjware/gitlabfs/gitlab"
"github.com/hanwen/go-fuse/v2/fs"
)
func Start(gf gitlab.GroupFetcher, mountpoint string, rootGrouptID int) error {
fmt.Printf("Mounting in %v\n", mountpoint)
opts := &fs.Options{}
opts.Debug = true
root, err := newRootGroupNode(gf, rootGrouptID)
if err != nil {
return fmt.Errorf("root group fetch fail: %w", err)
}
server, err := fs.Mount(mountpoint, root, opts)
if err != nil {
return fmt.Errorf("mount failed: %w", err)
}
server.Wait()
return nil
}

89
fs/group.go Normal file
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@ -0,0 +1,89 @@
package fs
import (
"context"
"syscall"
"github.com/badjware/gitlabfs/gitlab"
"github.com/hanwen/go-fuse/v2/fs"
"github.com/hanwen/go-fuse/v2/fuse"
)
type groupNode struct {
fs.Inode
group *gitlab.Group
gf gitlab.GroupFetcher
}
// Ensure we are implementing the NodeReaddirer interface
var _ = (fs.NodeReaddirer)((*groupNode)(nil))
// Ensure we are implementing the NodeLookuper interface
var _ = (fs.NodeLookuper)((*groupNode)(nil))
func newRootGroupNode(gf gitlab.GroupFetcher, gid int) (*groupNode, error) {
group, err := gf.FetchGroup(gid)
if err != nil {
return nil, err
}
node := &groupNode{
group: group,
gf: gf,
}
return node, nil
}
func newGroupNode(gf gitlab.GroupFetcher, group *gitlab.Group) (*groupNode, error) {
node := &groupNode{
group: group,
gf: gf,
}
return node, nil
}
func (n *groupNode) Readdir(ctx context.Context) (fs.DirStream, syscall.Errno) {
groupContent, _ := n.gf.FetchGroupContent(n.group)
entries := make([]fuse.DirEntry, 0, len(groupContent.Groups)+len(groupContent.Repositories))
for _, group := range groupContent.Groups {
entries = append(entries, fuse.DirEntry{
Name: group.Path,
Ino: uint64(group.ID),
Mode: fuse.S_IFDIR,
})
}
for _, repository := range groupContent.Repositories {
entries = append(entries, fuse.DirEntry{
Name: repository.Path,
Ino: uint64(repository.ID),
Mode: fuse.S_IFLNK,
})
}
return fs.NewListDirStream(entries), 0
}
func (n *groupNode) Lookup(ctx context.Context, name string, out *fuse.EntryOut) (*fs.Inode, syscall.Errno) {
groupContent, _ := n.gf.FetchGroupContent(n.group)
// Check if the map of groups contains it
group, ok := groupContent.Groups[name]
if ok {
attrs := fs.StableAttr{
Ino: uint64(group.ID),
Mode: fuse.S_IFDIR,
}
groupNode, _ := newGroupNode(n.gf, group)
return n.NewInode(ctx, groupNode, attrs), 0
}
// Check if the map of repositories contains it
repository, ok := groupContent.Repositories[name]
if ok {
attrs := fs.StableAttr{
Ino: uint64(repository.ID),
Mode: fuse.S_IFLNK,
}
repositoryNode, _ := newRepositoryNode(repository) // TODO
return n.NewInode(ctx, repositoryNode, attrs), 0
}
return nil, syscall.ENOENT
}

30
fs/repository.go Normal file
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@ -0,0 +1,30 @@
package fs
import (
"context"
"strconv"
"syscall"
"github.com/badjware/gitlabfs/gitlab"
"github.com/hanwen/go-fuse/v2/fs"
)
type RepositoryNode struct {
fs.Inode
repository *gitlab.Repository
}
// Ensure we are implementing the NodeReaddirer interface
var _ = (fs.NodeReadlinker)((*RepositoryNode)(nil))
func newRepositoryNode(repository *gitlab.Repository) (*RepositoryNode, error) {
node := &RepositoryNode{
repository: repository,
}
return node, nil
}
func (n *RepositoryNode) Readlink(ctx context.Context) ([]byte, syscall.Errno) {
// TODO
return []byte(strconv.Itoa(n.repository.ID)), 0
}

10
fs/utils.go Normal file
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@ -0,0 +1,10 @@
package fs
import (
"path/filepath"
"strings"
)
func stripSlash(fn string) string {
return strings.TrimRight(fn, string(filepath.Separator))
}

89
gitlab/client.go
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@ -6,13 +6,21 @@ import (
"github.com/xanzy/go-gitlab"
)
type GroupContentFetcher interface {
FetchGroupContent(path string) (GroupContent, error)
type GroupFetcher interface {
FetchGroup(gid int) (*Group, error)
FetchGroupContent(group *Group) (*GroupContent, error)
}
type GroupContent struct {
Repositories []Repository
Groups []Group
Groups map[string]*Group
Repositories map[string]*Repository
}
type Group struct {
ID int
Name string
Path string
Content *GroupContent
}
type Repository struct {
@ -22,12 +30,6 @@ type Repository struct {
CloneURL string
}
type Group struct {
ID int
Name string
Path string
}
type GitlabClient struct {
Client *gitlab.Client
}
@ -47,7 +49,7 @@ func NewClient(gitlabUrl string, gitlabToken string) (*GitlabClient, error) {
return gitlabClient, nil
}
func NewRepositryFromGitlabProject(project *gitlab.Project) Repository {
func NewRepositoryFromGitlabProject(project *gitlab.Project) Repository {
// https://godoc.org/github.com/xanzy/go-gitlab#Project
return Repository{
ID: project.ID,
@ -67,27 +69,23 @@ func NewGroupFromGitlabGroup(group *gitlab.Group) Group {
}
}
func (g GitlabClient) FetchGroupContent(group *Group) (*GroupContent, error) {
content := &GroupContent{}
func (c GitlabClient) FetchGroup(gid int) (*Group, error) {
gitlabGroup, _, err := c.Client.Groups.GetGroup(gid)
if err != nil {
return nil, fmt.Errorf("failed to fetch root group with id %v: %w\n", gid, err)
}
group := NewGroupFromGitlabGroup(gitlabGroup)
return &group, nil
}
// List repositories in path
listProjectOpt := &gitlab.ListGroupProjectsOptions{
ListOptions: gitlab.ListOptions{
Page: 1,
}}
for {
projects, response, err := g.Client.Groups.ListGroupProjects(group.ID, listProjectOpt)
if err != nil {
return nil, fmt.Errorf("failed to fetch projects in gitlab: %w", err)
}
for _, project := range projects {
content.Repositories = append(content.Repositories, NewRepositryFromGitlabProject(project))
}
if response.CurrentPage >= response.TotalPages {
break
}
// Get the next page
listProjectOpt.Page = response.NextPage
func (c GitlabClient) FetchGroupContent(group *Group) (*GroupContent, error) {
if group.Content != nil {
return group.Content, nil
}
content := &GroupContent{
Groups: map[string]*Group{},
Repositories: map[string]*Repository{},
}
// List subgroups in path
@ -96,12 +94,13 @@ func (g GitlabClient) FetchGroupContent(group *Group) (*GroupContent, error) {
Page: 1,
}}
for {
groups, response, err := g.Client.Groups.ListSubgroups(group.ID, ListGroupsOpt)
gitlabGroups, response, err := c.Client.Groups.ListSubgroups(group.ID, ListGroupsOpt)
if err != nil {
return nil, fmt.Errorf("failed to fetch groups in gitlab: %w", err)
}
for _, group := range groups {
content.Groups = append(content.Groups, NewGroupFromGitlabGroup(group))
for _, gitlabGroup := range gitlabGroups {
group := NewGroupFromGitlabGroup(gitlabGroup)
content.Groups[group.Path] = &group
}
if response.CurrentPage >= response.TotalPages {
break
@ -110,5 +109,27 @@ func (g GitlabClient) FetchGroupContent(group *Group) (*GroupContent, error) {
ListGroupsOpt.Page = response.NextPage
}
// List repositories in path
listProjectOpt := &gitlab.ListGroupProjectsOptions{
ListOptions: gitlab.ListOptions{
Page: 1,
}}
for {
gitlabProjects, response, err := c.Client.Groups.ListGroupProjects(group.ID, listProjectOpt)
if err != nil {
return nil, fmt.Errorf("failed to fetch projects in gitlab: %w", err)
}
for _, gitlabProject := range gitlabProjects {
repository := NewRepositoryFromGitlabProject(gitlabProject)
content.Repositories[repository.Path] = &repository
}
if response.CurrentPage >= response.TotalPages {
break
}
// Get the next page
listProjectOpt.Page = response.NextPage
}
group.Content = content
return content, nil
}

6
go.mod
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@ -2,4 +2,8 @@ module github.com/badjware/gitlabfs
go 1.15
require github.com/xanzy/go-gitlab v0.40.2
require (
github.com/hanwen/go-fuse v1.0.0
github.com/hanwen/go-fuse/v2 v2.0.3
github.com/xanzy/go-gitlab v0.40.2
)

7
go.sum
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@ -3,11 +3,16 @@ github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSs
github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
github.com/google/go-querystring v1.0.0 h1:Xkwi/a1rcvNg1PPYe5vI8GbeBY/jrVuDX5ASuANWTrk=
github.com/google/go-querystring v1.0.0/go.mod h1:odCYkC5MyYFN7vkCjXpyrEuKhc/BUO6wN/zVPAxq5ck=
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 v2.0.3 h1:kpV28BKeSyVgZREItBLnaVBvOEwv2PuhNdKetwnvNHo=
github.com/hanwen/go-fuse/v2 v2.0.3/go.mod h1:0EQM6aH2ctVpvZ6a+onrQ/vaykxh2GH7hy3e13vzTUY=
github.com/hashicorp/go-cleanhttp v0.5.1 h1:dH3aiDG9Jvb5r5+bYHsikaOUIpcM0xvgMXVoDkXMzJM=
github.com/hashicorp/go-cleanhttp v0.5.1/go.mod h1:JpRdi6/HCYpAwUzNwuwqhbovhLtngrth3wmdIIUrZ80=
github.com/hashicorp/go-hclog v0.9.2/go.mod h1:5CU+agLiy3J7N7QjHK5d05KxGsuXiQLrjA0H7acj2lQ=
github.com/hashicorp/go-retryablehttp v0.6.4 h1:BbgctKO892xEyOXnGiaAwIoSq1QZ/SS4AhjoAh9DnfY=
github.com/hashicorp/go-retryablehttp v0.6.4/go.mod h1:vAew36LZh98gCBJNLH42IQ1ER/9wtLZZ8meHqQvEYWY=
github.com/kylelemons/godebug v0.0.0-20170820004349-d65d576e9348/go.mod h1:B69LEHPfb2qLo0BaaOLcbitczOKLWTsrBG9LczfCD4k=
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=
@ -20,6 +25,8 @@ golang.org/x/net v0.0.0-20181108082009-03003ca0c849/go.mod h1:mL1N/T3taQHkDXs73r
golang.org/x/oauth2 v0.0.0-20181106182150-f42d05182288 h1:JIqe8uIcRBHXDQVvZtHwp80ai3Lw3IJAeJEs55Dc1W0=
golang.org/x/oauth2 v0.0.0-20181106182150-f42d05182288/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sys v0.0.0-20180830151530-49385e6e1522 h1:Ve1ORMCxvRmSXBwJK+t3Oy+V2vRW2OetUQBq4rJIkZE=
golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
golang.org/x/time v0.0.0-20191024005414-555d28b269f0 h1:/5xXl8Y5W96D+TtHSlonuFqGHIWVuyCkGJLwGh9JJFs=
golang.org/x/time v0.0.0-20191024005414-555d28b269f0/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=

40
main.go
View File

@ -5,6 +5,7 @@ import (
"fmt"
"os"
"github.com/badjware/gitlabfs/fs"
"github.com/badjware/gitlabfs/gitlab"
)
@ -13,31 +14,28 @@ func main() {
gitlabToken := flag.String("gitlab-token", "", "the gitlab authentication token")
gitlabRootGroupID := flag.Int("gitlab-group-id", 9970, "the group id of the groups at the root of the filesystem")
// gitlabNamespace := flag.String()
flag.Parse()
if flag.NArg() != 1 {
fmt.Printf("usage: %s MOUNTPOINT\n", os.Args[0])
os.Exit(2)
}
mountpoint := flag.Arg(0)
gitlabClient, _ := gitlab.NewClient(*gitlabURL, *gitlabToken)
// TODO: move this
group, _, err := gitlabClient.Client.Groups.GetGroup(*gitlabRootGroupID)
if err != nil {
fmt.Printf("failed to fetch root group with id %v: %w\n", *gitlabRootGroupID, err)
os.Exit(1)
}
rootGroup := gitlab.NewGroupFromGitlabGroup(group)
fmt.Printf("Root group: %v\n", rootGroup.Name)
fs.Start(gitlabClient, mountpoint, *gitlabRootGroupID)
content, err := gitlabClient.FetchGroupContent(&rootGroup)
if err != nil {
fmt.Println(err)
}
// content, err := gitlabClient.FetchGroupContent(&rootGroup)
// if err != nil {
// fmt.Println(err)
// }
fmt.Println("Projects")
for _, r := range content.Repositories {
fmt.Println(r.Name, r.Path, r.CloneURL)
}
fmt.Println("Groups")
for _, g := range content.Groups {
fmt.Println(g.Name, g.Path)
}
// fmt.Println("Projects")
// for _, r := range content.Repositories {
// fmt.Println(r.Name, r.Path, r.CloneURL)
// }
// fmt.Println("Groups")
// for _, g := range content.Groups {
// fmt.Println(g.Name, g.Path)
// }
}