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storage_list.go
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/
storage_list.go
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package cmd
import (
"fmt"
"os"
"path"
"strings"
"text/tabwriter"
"time"
"github.com/aws/aws-sdk-go-v2/aws"
"github.com/aws/aws-sdk-go-v2/service/s3"
"github.com/dustin/go-humanize"
"github.com/exoscale/egoscale"
"github.com/spf13/cobra"
)
type storageListObjectsItemOutput struct {
Path string `json:"name"`
Size int64 `json:"size"`
LastModified string `json:"last_modified,omitempty"`
Dir bool `json:"dir"`
}
type storageListObjectsOutput []storageListObjectsItemOutput
func (o *storageListObjectsOutput) toJSON() { outputJSON(o) }
func (o *storageListObjectsOutput) toText() { outputText(o) }
func (o *storageListObjectsOutput) toTable() {
table := tabwriter.NewWriter(os.Stdout,
0,
0,
1,
' ',
tabwriter.TabIndent)
defer table.Flush()
for _, f := range *o {
if f.Dir {
_, _ = fmt.Fprintf(table, " \tDIR \t%s/\n", f.Path)
} else {
_, _ = fmt.Fprintf(table, "%s\t%6s \t%s\n", f.LastModified, humanize.IBytes(uint64(f.Size)), f.Path)
}
}
}
type storageListBucketsItemOutput struct {
Name string `json:"name"`
Zone string `json:"zone"`
Size int64 `json:"size"`
Created string `json:"created"`
}
type storageListBucketsOutput []storageListBucketsItemOutput
func (o *storageListBucketsOutput) toJSON() { outputJSON(o) }
func (o *storageListBucketsOutput) toText() { outputText(o) }
func (o *storageListBucketsOutput) toTable() {
table := tabwriter.NewWriter(os.Stdout,
0,
0,
1,
' ',
tabwriter.TabIndent)
defer table.Flush()
for _, b := range *o {
_, _ = fmt.Fprintf(table, "%s\t%s\t%6s \t%s/\n",
b.Created, b.Zone, humanize.IBytes(uint64(b.Size)), b.Name)
}
}
var storageListCmd = &cobra.Command{
Use: "list [sos://BUCKET[/[PREFIX/]]",
Short: "List buckets and objects",
Long: fmt.Sprintf(`This command lists buckets and their objects.
If no argument is passed, this commands lists existing buckets. If a prefix is
specified (e.g. "sos://my-bucket/.../") the command lists the objects stored
in the bucket under the corresponding prefix.
Supported output template annotations:
* When listing buckets: %s
* When listing objects: %s`,
strings.Join(outputterTemplateAnnotations(&storageListBucketsItemOutput{}), ", "),
strings.Join(outputterTemplateAnnotations(&storageListObjectsItemOutput{}), ", ")),
Aliases: gListAlias,
PreRun: func(cmd *cobra.Command, args []string) {
if len(args) == 1 {
args[0] = strings.TrimPrefix(args[0], storageBucketPrefix)
}
},
RunE: func(cmd *cobra.Command, args []string) error {
var (
bucket string
prefix string
)
if len(args) == 0 {
return output(listStorageBuckets())
}
certsFile, err := cmd.Flags().GetString("certs-file")
if err != nil {
return err
}
recursive, err := cmd.Flags().GetBool("recursive")
if err != nil {
return err
}
stream, err := cmd.Flags().GetBool("stream")
if err != nil {
return err
}
parts := strings.SplitN(args[0], "/", 2)
bucket = parts[0]
if len(parts) > 1 {
prefix = parts[1]
}
storage, err := newStorageClient(
storageClientOptWithCertsFile(certsFile),
storageClientOptZoneFromBucket(bucket),
)
if err != nil {
return fmt.Errorf("unable to initialize storage client: %v", err)
}
return output(storage.listObjects(bucket, prefix, recursive, stream))
},
}
func init() {
storageListCmd.Flags().BoolP("recursive", "r", false,
"list bucket recursively")
storageListCmd.Flags().BoolP("stream", "s", false,
"stream listed files instead of waiting for complete listing (useful for large buckets)")
storageCmd.AddCommand(storageListCmd)
}
func listStorageBuckets() (outputter, error) {
out := make(storageListBucketsOutput, 0)
res, err := cs.RequestWithContext(gContext, egoscale.ListBucketsUsage{})
if err != nil {
return nil, err
}
for _, b := range res.(*egoscale.ListBucketsUsageResponse).BucketsUsage {
created, err := time.Parse(time.RFC3339, b.Created)
if err != nil {
return nil, err
}
out = append(out, storageListBucketsItemOutput{
Name: b.Name,
Zone: b.Region,
Size: b.Usage,
Created: created.Format(storageTimestampFormat),
})
}
return &out, nil
}
func (c *storageClient) listObjects(bucket, prefix string, recursive, stream bool) (outputter, error) {
dirs := make(map[string]struct{})
out := make(storageListObjectsOutput, 0)
var ct string
for {
res, err := c.ListObjectsV2(gContext, &s3.ListObjectsV2Input{
Bucket: aws.String(bucket),
Prefix: aws.String(prefix),
ContinuationToken: aws.String(ct),
})
if err != nil {
return nil, err
}
ct = aws.ToString(res.NextContinuationToken)
for _, o := range res.Contents {
// If not invoked in recursive mode, split object keys on the "/" separator then return
// a "directory" placeholder for the base prefix and hide objects "below" the prefix.
parts := strings.SplitN(strings.TrimPrefix(aws.ToString(o.Key), prefix), "/", 2)
if len(parts) > 1 && !recursive {
dir := path.Base(parts[0])
if _, ok := dirs[dir]; !ok {
if stream {
fmt.Println(dir + "/")
} else {
out = append(out, storageListObjectsItemOutput{
Path: dir,
Dir: true,
})
}
dirs[dir] = struct{}{}
}
continue
}
if stream {
fmt.Println(aws.ToString(o.Key))
} else {
out = append(out, storageListObjectsItemOutput{
Path: aws.ToString(o.Key),
Size: o.Size,
LastModified: o.LastModified.Format(storageTimestampFormat),
})
}
}
if !res.IsTruncated {
break
}
}
return &out, nil
}