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cmd_ls.go
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cmd_ls.go
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// Copyright (C) 2021 Storj Labs, Inc.
// See LICENSE for copying information.
package main
import (
"context"
"encoding/json"
"strconv"
"time"
"github.com/zeebo/clingy"
"github.com/zeebo/errs"
"storj.io/storj/cmd/uplink/ulext"
"storj.io/storj/cmd/uplink/ulfs"
"storj.io/storj/cmd/uplink/ulloc"
"storj.io/uplink"
)
type cmdLs struct {
ex ulext.External
access string
recursive bool
encrypted bool
expanded bool
pending bool
utc bool
output string
prefix *ulloc.Location
}
func newCmdLs(ex ulext.External) *cmdLs {
return &cmdLs{ex: ex}
}
func (c *cmdLs) Setup(params clingy.Parameters) {
c.access = params.Flag("access", "Access name or value to use", "").(string)
c.recursive = params.Flag("recursive", "List recursively", false,
clingy.Short('r'),
clingy.Transform(strconv.ParseBool), clingy.Boolean,
).(bool)
c.encrypted = params.Flag("encrypted", "Shows keys base64 encoded without decrypting", false,
clingy.Transform(strconv.ParseBool), clingy.Boolean,
).(bool)
c.pending = params.Flag("pending", "List pending object uploads instead", false,
clingy.Transform(strconv.ParseBool), clingy.Boolean,
).(bool)
c.expanded = params.Flag("expanded", "Use expanded output, showing object expiration times and whether there is custom metadata attached", false,
clingy.Short('x'),
clingy.Transform(strconv.ParseBool), clingy.Boolean,
).(bool)
c.utc = params.Flag("utc", "Show all timestamps in UTC instead of local time", false,
clingy.Transform(strconv.ParseBool), clingy.Boolean,
).(bool)
c.output = params.Flag("output", "Output Format (tabbed, json)", "tabbed",
clingy.Short('o'),
).(string)
c.prefix = params.Arg("prefix", "Prefix to list (sj://BUCKET[/KEY])", clingy.Optional,
clingy.Transform(ulloc.Parse),
).(*ulloc.Location)
}
func (c *cmdLs) Execute(ctx context.Context) (err error) {
defer mon.Task()(&ctx)(&err)
if c.prefix == nil {
return c.listBuckets(ctx)
}
return c.listLocation(ctx, *c.prefix)
}
func (c *cmdLs) listBuckets(ctx context.Context) (err error) {
defer mon.Task()(&ctx)(&err)
project, err := c.ex.OpenProject(ctx, c.access)
if err != nil {
return err
}
defer func() { _ = project.Close() }()
iter := project.ListBuckets(ctx, nil)
switch c.output {
case "tabbed":
return c.printTabbedBucket(ctx, iter)
case "json":
return c.printJSONBucket(ctx, iter)
default:
return errs.New("unknown output format, got %s", c.output)
}
}
func (c *cmdLs) listLocation(ctx context.Context, prefix ulloc.Location) (err error) {
defer mon.Task()(&ctx)(&err)
fs, err := c.ex.OpenFilesystem(ctx, c.access, ulext.BypassEncryption(c.encrypted))
if err != nil {
return err
}
defer func() { _ = fs.Close() }()
if fs.IsLocalDir(ctx, prefix) {
prefix = prefix.AsDirectoryish()
}
// create the object iterator of either existing objects or pending multipart uploads
iter, err := fs.List(ctx, prefix, &ulfs.ListOptions{
Recursive: c.recursive,
Pending: c.pending,
Expanded: c.expanded,
})
if err != nil {
return err
}
switch c.output {
case "tabbed":
return c.printTabbedLocation(ctx, iter)
case "json":
return c.printJSONLocation(ctx, iter)
default:
return errs.New("unknown output format, got %s", c.output)
}
}
func (c *cmdLs) printTabbedBucket(ctx context.Context, iter *uplink.BucketIterator) (err error) {
tw := newTabbedWriter(clingy.Stdout(ctx), "CREATED", "NAME")
defer tw.Done()
for iter.Next() {
item := iter.Item()
tw.WriteLine(formatTime(c.utc, item.Created), item.Name)
}
return iter.Err()
}
func (c *cmdLs) printJSONBucket(ctx context.Context, iter *uplink.BucketIterator) (err error) {
jw := json.NewEncoder(clingy.Stdout(ctx))
for iter.Next() {
obj := iter.Item()
err = jw.Encode(obj)
if err != nil {
return err
}
}
return iter.Err()
}
func (c *cmdLs) printTabbedLocation(ctx context.Context, iter ulfs.ObjectIterator) (err error) {
headers := []string{"KIND", "CREATED", "SIZE", "KEY"}
if c.expanded {
headers = append(headers, "EXPIRES", "META")
}
tw := newTabbedWriter(clingy.Stdout(ctx), headers...)
defer tw.Done()
// iterate and print the results
for iter.Next() {
obj := iter.Item()
var parts []interface{}
if obj.IsPrefix {
parts = append(parts, "PRE", "", "", obj.Loc.Loc())
if c.expanded {
parts = append(parts, "", "")
}
} else {
parts = append(parts, "OBJ", formatTime(c.utc, obj.Created), obj.ContentLength, obj.Loc.Loc())
if c.expanded {
parts = append(parts, formatTime(c.utc, obj.Expires), sumMetadataSize(obj.Metadata))
}
}
tw.WriteLine(parts...)
}
return iter.Err()
}
func (c *cmdLs) printJSONLocation(ctx context.Context, iter ulfs.ObjectIterator) (err error) {
jw := json.NewEncoder(clingy.Stdout(ctx))
for iter.Next() {
obj := iter.Item()
if obj.IsPrefix {
err = jw.Encode(struct {
Kind string `json:"kind"`
Key string `json:"key"`
}{"PRE", obj.Loc.Loc()})
} else {
err = jw.Encode(struct {
Kind string `json:"kind"`
Created string `json:"created"`
Size int64 `json:"size"`
Key string `json:"key"`
Expires string `json:"expires,omitempty"`
Metadata int `json:"meta,omitempty"`
}{"OBJ", formatTime(c.utc, obj.Created), obj.ContentLength, obj.Loc.Loc(), formatTime(c.utc, obj.Expires), sumMetadataSize(obj.Metadata)})
}
if err != nil {
return err
}
}
return iter.Err()
}
func formatTime(utc bool, x time.Time) string {
if x.IsZero() {
return ""
}
if utc {
x = x.UTC()
} else {
x = x.Local()
}
return x.Format("2006-01-02 15:04:05")
}
func sumMetadataSize(md uplink.CustomMetadata) int {
size := 0
for k, v := range md {
size += len(k)
size += len(v)
}
return size
}