[#791] neofs-lens: Implement object listing
Implement `list` command for object listing. Support listing of the objects from write-cache and blobovnicza. Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
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parent
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commit
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3 changed files with 105 additions and 1 deletions
72
cmd/neofs-lens/internal/commands/list/list.go
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72
cmd/neofs-lens/internal/commands/list/list.go
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@ -0,0 +1,72 @@
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package cmdlist
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import (
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"io"
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"github.com/nspcc-dev/neofs-api-go/pkg/object"
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common "github.com/nspcc-dev/neofs-node/cmd/neofs-lens/internal"
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"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/blobovnicza"
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"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/writecache"
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"github.com/spf13/cobra"
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)
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const (
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flagFile = "path"
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flagWriteCache = "writecache"
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)
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var (
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vPath string
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vWriteCache bool
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)
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func init() {
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Command.Flags().StringVar(&vPath, flagFile, "",
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"Path to storage engine component",
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)
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_ = Command.MarkFlagFilename(flagFile)
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_ = Command.MarkFlagRequired(flagFile)
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Command.Flags().BoolVar(&vWriteCache, flagWriteCache, false,
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"Process write-cache",
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)
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}
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var Command = &cobra.Command{
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Use: "list",
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Short: "Object listing",
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Long: `List all objects stored in storage engine component.`,
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Run: func(cmd *cobra.Command, args []string) {
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// other targets can be supported
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w := cmd.OutOrStderr()
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wAddr := func(addr *object.Address) error {
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_, err := io.WriteString(w, addr.String()+"\n")
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return err
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}
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if vWriteCache {
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db, err := writecache.OpenDB(vPath, true)
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common.ExitOnErr(cmd, common.Errf("could not open write-cache db: %w", err))
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defer db.Close()
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err = writecache.IterateDB(db, wAddr)
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common.ExitOnErr(cmd, common.Errf("write-cache iterator failure: %w", err))
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return
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}
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blz := blobovnicza.New(
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blobovnicza.WithPath(vPath),
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blobovnicza.ReadOnly(),
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)
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common.ExitOnErr(cmd, blz.Open())
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defer blz.Close()
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err := blobovnicza.IterateAddresses(blz, wAddr)
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common.ExitOnErr(cmd, common.Errf("blobovnicza iterator failure: %w", err))
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},
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}
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31
cmd/neofs-lens/internal/common.go
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31
cmd/neofs-lens/internal/common.go
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@ -0,0 +1,31 @@
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package common
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import (
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"fmt"
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"os"
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"github.com/spf13/cobra"
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)
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// Errf returns formatted error in errFmt format if err is not nil.
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func Errf(errFmt string, err error) error {
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if err == nil {
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return nil
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}
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return fmt.Errorf(errFmt, err)
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}
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// ExitOnErr calls exitOnErrCode with code 1.
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func ExitOnErr(cmd *cobra.Command, err error) {
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exitOnErrCode(cmd, err, 1)
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}
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// exitOnErrCode prints error via cmd and calls os.Exit with passed exit code.
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// Does nothing if err is nil.
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func exitOnErrCode(cmd *cobra.Command, err error, code int) {
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if err != nil {
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cmd.PrintErrln(err)
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os.Exit(code)
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}
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}
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@ -4,6 +4,7 @@ import (
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"fmt"
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"os"
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cmdlist "github.com/nspcc-dev/neofs-node/cmd/neofs-lens/internal/commands/list"
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"github.com/nspcc-dev/neofs-node/misc"
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"github.com/spf13/cobra"
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)
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@ -32,7 +33,7 @@ func entryPoint(cmd *cobra.Command, _ []string) error {
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func init() {
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command.AddCommand(
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// sub-commands
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cmdlist.Command,
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)
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}
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