storj/cmd/uplink/cmd_meta_get.go

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// Copyright (C) 2021 Storj Labs, Inc.
// See LICENSE for copying information.
package main
import (
"encoding/json"
"fmt"
"strconv"
"github.com/zeebo/clingy"
"github.com/zeebo/errs"
"storj.io/storj/cmd/uplink/ulext"
"storj.io/storj/cmd/uplink/ulloc"
)
type cmdMetaGet struct {
ex ulext.External
access string
encrypted bool
location ulloc.Location
entry *string
}
func newCmdMetaGet(ex ulext.External) *cmdMetaGet {
return &cmdMetaGet{ex: ex}
}
func (c *cmdMetaGet) Setup(params clingy.Parameters) {
c.access = params.Flag("access", "Access name or value to use", "").(string)
c.encrypted = params.Flag("encrypted", "Shows keys base64 encoded without decrypting", false,
clingy.Transform(strconv.ParseBool), clingy.Boolean,
).(bool)
c.location = params.Arg("location", "Location of object (sj://BUCKET/KEY)",
clingy.Transform(ulloc.Parse),
).(ulloc.Location)
c.entry = params.Arg("entry", "Metadata entry to get", clingy.Optional).(*string)
}
func (c *cmdMetaGet) Execute(ctx clingy.Context) error {
project, err := c.ex.OpenProject(ctx, c.access, ulext.BypassEncryption(c.encrypted))
if err != nil {
return err
}
defer func() { _ = project.Close() }()
bucket, key, ok := c.location.RemoteParts()
if !ok {
return errs.New("location must be remote")
}
object, err := project.StatObject(ctx, bucket, key)
if err != nil {
return err
}
if c.entry != nil {
value, ok := object.Custom[*c.entry]
if !ok {
return errs.New("entry %q does not exist", *c.entry)
}
fmt.Fprintln(ctx.Stdout(), value)
return nil
}
if object.Custom == nil {
fmt.Fprintln(ctx.Stdout(), "{}")
return nil
}
data, err := json.MarshalIndent(object.Custom, "", " ")
if err != nil {
return errs.Wrap(err)
}
fmt.Fprintln(ctx.Stdout(), string(data))
return nil
}