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filestore.go
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filestore.go
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package commands
import (
"context"
"fmt"
"io"
oldCmds "github.com/ipfs/go-ipfs/commands"
lgc "github.com/ipfs/go-ipfs/commands/legacy"
"github.com/ipfs/go-ipfs/core"
cmdenv "github.com/ipfs/go-ipfs/core/commands/cmdenv"
e "github.com/ipfs/go-ipfs/core/commands/e"
"github.com/ipfs/go-ipfs/filestore"
cid "gx/ipfs/QmPSQnBKM9g7BaUcZCvswUJVscQ1ipjmwxN5PXCjkp9EQ7/go-cid"
cmds "gx/ipfs/QmSXUokcP4TJpFfqozT69AVAYRtzXVMUjzQVkYX41R9Svs/go-ipfs-cmds"
"gx/ipfs/Qmde5VP1qUkyQXKCfmEUA7bP64V2HAptbJ7phuPp7jXWwg/go-ipfs-cmdkit"
)
var FileStoreCmd = &cmds.Command{
Helptext: cmdkit.HelpText{
Tagline: "Interact with filestore objects.",
},
Subcommands: map[string]*cmds.Command{
"ls": lsFileStore,
"verify": lgc.NewCommand(verifyFileStore),
"dups": lgc.NewCommand(dupsFileStore),
},
}
const (
fileOrderOptionName = "file-order"
)
var lsFileStore = &cmds.Command{
Helptext: cmdkit.HelpText{
Tagline: "List objects in filestore.",
LongDescription: `
List objects in the filestore.
If one or more <obj> is specified only list those specific objects,
otherwise list all objects.
The output is:
<hash> <size> <path> <offset>
`,
},
Arguments: []cmdkit.Argument{
cmdkit.StringArg("obj", false, true, "Cid of objects to list."),
},
Options: []cmdkit.Option{
cmdkit.BoolOption(fileOrderOptionName, "sort the results based on the path of the backing file"),
},
Run: func(req *cmds.Request, res cmds.ResponseEmitter, env cmds.Environment) error {
_, fs, err := getFilestore(env)
if err != nil {
return err
}
args := req.Arguments
if len(args) > 0 {
out := perKeyActionToChan(req.Context, args, func(c cid.Cid) *filestore.ListRes {
return filestore.List(fs, c)
})
return res.Emit(out)
}
fileOrder, _ := req.Options[fileOrderOptionName].(bool)
next, err := filestore.ListAll(fs, fileOrder)
if err != nil {
return err
}
out := listResToChan(req.Context, next)
return res.Emit(out)
},
PostRun: cmds.PostRunMap{
cmds.CLI: streamResult(func(v interface{}, out io.Writer) nonFatalError {
r := v.(*filestore.ListRes)
if r.ErrorMsg != "" {
return nonFatalError(r.ErrorMsg)
}
fmt.Fprintf(out, "%s\n", r.FormatLong())
return ""
}),
},
Type: filestore.ListRes{},
}
var verifyFileStore = &oldCmds.Command{
Helptext: cmdkit.HelpText{
Tagline: "Verify objects in filestore.",
LongDescription: `
Verify objects in the filestore.
If one or more <obj> is specified only verify those specific objects,
otherwise verify all objects.
The output is:
<status> <hash> <size> <path> <offset>
Where <status> is one of:
ok: the block can be reconstructed
changed: the contents of the backing file have changed
no-file: the backing file could not be found
error: there was some other problem reading the file
missing: <obj> could not be found in the filestore
ERROR: internal error, most likely due to a corrupt database
For ERROR entries the error will also be printed to stderr.
`,
},
Arguments: []cmdkit.Argument{
cmdkit.StringArg("obj", false, true, "Cid of objects to verify."),
},
Options: []cmdkit.Option{
cmdkit.BoolOption(fileOrderOptionName, "verify the objects based on the order of the backing file"),
},
Run: func(req oldCmds.Request, res oldCmds.Response) {
_, fs, err := getFilestore(req.InvocContext())
if err != nil {
res.SetError(err, cmdkit.ErrNormal)
return
}
args := req.Arguments()
if len(args) > 0 {
out := perKeyActionToChan(req.Context(), args, func(c cid.Cid) *filestore.ListRes {
return filestore.Verify(fs, c)
})
res.SetOutput(out)
} else {
fileOrder, _, _ := req.Option(fileOrderOptionName).Bool()
next, err := filestore.VerifyAll(fs, fileOrder)
if err != nil {
res.SetError(err, cmdkit.ErrNormal)
return
}
out := listResToChan(req.Context(), next)
res.SetOutput(out)
}
},
Marshalers: oldCmds.MarshalerMap{
oldCmds.Text: func(res oldCmds.Response) (io.Reader, error) {
v, err := unwrapOutput(res.Output())
if err != nil {
return nil, err
}
r, ok := v.(*filestore.ListRes)
if !ok {
return nil, e.TypeErr(r, v)
}
if r.Status == filestore.StatusOtherError {
fmt.Fprintf(res.Stderr(), "%s\n", r.ErrorMsg)
}
fmt.Fprintf(res.Stdout(), "%s %s\n", r.Status.Format(), r.FormatLong())
return nil, nil
},
},
Type: filestore.ListRes{},
}
var dupsFileStore = &oldCmds.Command{
Helptext: cmdkit.HelpText{
Tagline: "List blocks that are both in the filestore and standard block storage.",
},
Run: func(req oldCmds.Request, res oldCmds.Response) {
_, fs, err := getFilestore(req.InvocContext())
if err != nil {
res.SetError(err, cmdkit.ErrNormal)
return
}
ch, err := fs.FileManager().AllKeysChan(req.Context())
if err != nil {
res.SetError(err, cmdkit.ErrNormal)
return
}
out := make(chan interface{}, 128)
res.SetOutput((<-chan interface{})(out))
go func() {
defer close(out)
for cid := range ch {
have, err := fs.MainBlockstore().Has(cid)
if err != nil {
select {
case out <- &RefWrapper{Err: err.Error()}:
case <-req.Context().Done():
}
return
}
if have {
select {
case out <- &RefWrapper{Ref: cid.String()}:
case <-req.Context().Done():
return
}
}
}
}()
},
Marshalers: refsMarshallerMap,
Type: RefWrapper{},
}
func getFilestore(env interface{}) (*core.IpfsNode, *filestore.Filestore, error) {
n, err := cmdenv.GetNode(env)
if err != nil {
return nil, nil, err
}
fs := n.Filestore
if fs == nil {
return n, nil, filestore.ErrFilestoreNotEnabled
}
return n, fs, err
}
func listResToChan(ctx context.Context, next func() *filestore.ListRes) <-chan interface{} {
out := make(chan interface{}, 128)
go func() {
defer close(out)
for {
r := next()
if r == nil {
return
}
select {
case out <- r:
case <-ctx.Done():
return
}
}
}()
return out
}
func perKeyActionToChan(ctx context.Context, args []string, action func(cid.Cid) *filestore.ListRes) <-chan interface{} {
out := make(chan interface{}, 128)
go func() {
defer close(out)
for _, arg := range args {
c, err := cid.Decode(arg)
if err != nil {
select {
case out <- &filestore.ListRes{
Status: filestore.StatusOtherError,
ErrorMsg: fmt.Sprintf("%s: %v", arg, err),
}:
case <-ctx.Done():
}
continue
}
r := action(c)
select {
case out <- r:
case <-ctx.Done():
return
}
}
}()
return out
}