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yap.go
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yap.go
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// Package cli provides easy-to-use commands to manage, monitor, and utilize AIS clusters.
/*
* Copyright (c) 2018-2023, NVIDIA CORPORATION. All rights reserved.
*/
package cli
import (
"errors"
"fmt"
"os"
"path/filepath"
"strings"
"github.com/NVIDIA/aistore/api"
"github.com/NVIDIA/aistore/api/apc"
"github.com/NVIDIA/aistore/cmn"
"github.com/NVIDIA/aistore/cmn/cos"
"github.com/urfave/cli"
)
// generic types
type (
here struct {
arg string
abspath string
tmpl string
finfo os.FileInfo
fdnames []string // files and directories (names)
isdir bool
recurs bool
stdin bool
}
there struct {
bck cmn.Bck
oname string
lr apc.ListRange
}
)
// assorted specific
type (
wop interface {
verb() string
dest() string
}
// PUT object(s)
putargs struct {
src here
pt *cos.ParsedTemplate // client-side, via --list|template or src/range
dst there
}
// 'ais archive bucket'
archbck struct {
putargs
rsrc there
apndIfExist bool
}
// 'ais archive put' (with an option to append)
archput struct {
putargs
archpath string
appendOnly bool
appendOrPut bool
}
)
// interface guard
var (
_ wop = (*putargs)(nil)
_ wop = (*archbck)(nil)
_ wop = (*archput)(nil)
)
func (*putargs) verb() string { return "PUT" }
func (a *putargs) dest() string {
if a.dst.oname == "" {
return a.dst.bck.Cname("")
}
// if len(a.src.fdnames) < 2 {
return a.dst.bck.Cname(a.dst.oname)
}
func (a *putargs) srcIsRegular() bool { return a.src.finfo != nil && !a.src.isdir }
func (a *putargs) parse(c *cli.Context, emptyDstOnameOK bool) (err error) {
if c.NArg() == 0 {
return missingArgumentsError(c, c.Command.ArgsUsage)
}
if flagIsSet(c, listFlag) && flagIsSet(c, templateFlag) {
return incorrectUsageMsg(c, errFmtExclusive, qflprn(listFlag), qflprn(templateFlag))
}
if flagIsSet(c, progressFlag) || flagIsSet(c, listFlag) || flagIsSet(c, templateFlag) {
// check connectivity (since '--progress' steals STDOUT with multi-object producing
// scary looking errors when there's no cluster)
if _, err = api.GetClusterMap(apiBP); err != nil {
return
}
}
switch {
case c.NArg() == 1: // BUCKET/[OBJECT_NAME] --list|--template
uri := c.Args().Get(0) // dst
a.dst.bck, a.dst.oname, err = parseBckObjURI(c, uri, emptyDstOnameOK)
if err != nil {
return
}
// source files via '--list' or '--template'
switch {
case flagIsSet(c, listFlag):
csv := parseStrFlag(c, listFlag)
a.src.fdnames = splitCsv(csv)
return nil
case flagIsSet(c, templateFlag):
a.src.tmpl = parseStrFlag(c, templateFlag)
pt, err := cos.NewParsedTemplate(a.src.tmpl)
if err == nil {
a.pt = &pt
} else if err == cos.ErrEmptyTemplate {
err = errors.New("template to select source files cannot be empty")
}
return err
default:
return fmt.Errorf("missing source arg in %q", c.Command.ArgsUsage)
}
case c.NArg() == 2: // FILE|DIRECTORY|DIRECTORY/PATTERN BUCKET/[OBJECT_NAME]
a.src.arg = c.Args().Get(0) // src
uri := c.Args().Get(1) // dst
a.dst.bck, a.dst.oname, err = parseBckObjURI(c, uri, emptyDstOnameOK)
if err != nil {
return err
}
const efmt = "source (%q) and flag (%s) cannot are mutually exclusive"
if flagIsSet(c, listFlag) {
return fmt.Errorf(efmt, a.src.arg, qflprn(listFlag))
}
if flagIsSet(c, templateFlag) {
return fmt.Errorf(efmt, a.src.arg, qflprn(templateFlag))
}
// STDIN
if a.src.arg == "-" {
a.src.stdin = true
if a.dst.oname == "" {
err = fmt.Errorf("missing destination object name (in %s) - required when writing directly from standard input",
c.Command.ArgsUsage)
}
return
}
// file or files
if a.src.abspath, err = absPath(a.src.arg); err != nil {
return
}
// inline "range" w/ no flag, e.g.: "/tmp/www/test{0..2}{0..2}.txt" ais://nnn/www
pt, errV := cos.ParseBashTemplate(a.src.abspath)
if errV == nil {
a.pt = &pt
return
}
// local file or dir?
finfo, errV := os.Stat(a.src.abspath)
if errV != nil {
// must be a csv list of files embedded with the first arg
a.src.fdnames = splitCsv(a.src.arg)
return
}
a.src.finfo = finfo
// reg file
if !finfo.IsDir() {
if a.dst.oname == "" {
// PUT [convention]: use `basename` as the destination object name, unless specified
a.dst.oname = filepath.Base(a.src.abspath)
}
return
}
// finally: a local (or rather, client-accessible) directory
a.src.isdir = true
a.src.recurs = flagIsSet(c, recursFlag)
return
}
if err := errTailArgsContainFlag(c.Args()[2:]); err != nil {
return err
}
const efmt = "too many arguments: '%s'"
var hint = fmt.Sprintf("(hint: wildcards must be in single or double quotes, see %s for details)", qflprn(cli.HelpFlag))
l := c.NArg()
if l > 4 {
return fmt.Errorf(efmt+" ...\n%s\n", strings.Join(c.Args()[2:4], " "), hint)
}
return fmt.Errorf(efmt+"\n%s\n", strings.Join(c.Args()[2:], " "), hint)
}
func (*archbck) verb() string { return "ARCHIVE" }
func (a *archbck) dest() string { return a.dst.bck.Cname(a.dst.oname) }
func (a *archbck) parse(c *cli.Context) (err error) {
err = a.putargs.parse(c, false /*empty dst oname ok*/)
if a.dst.bck.IsEmpty() || err == nil {
return err
}
//
// parse a.rsrc (TODO -- FIXME: support archiving local a.src)
//
if !flagIsSet(c, listFlag) && !flagIsSet(c, templateFlag) {
return missingArgumentsError(c,
fmt.Sprintf("either a list of object names via %s or selection template (%s)",
flprn(listFlag), flprn(templateFlag)))
}
if flagIsSet(c, listFlag) && flagIsSet(c, templateFlag) {
return incorrectUsageMsg(c, fmt.Sprintf("%s and %s options are mutually exclusive",
flprn(listFlag), flprn(templateFlag)))
}
// source bucket[/obj-or-range]
var (
objNameOrTmpl string
uri = c.Args().Get(0)
)
if a.rsrc.bck, objNameOrTmpl, err = parseBckObjURI(c, uri, true /*emptyObjnameOK*/); err != nil {
return err
}
objName, listObjs, tmplObjs, err := parseObjListTemplate(c, objNameOrTmpl)
if err != nil {
return err
}
if listObjs == "" && tmplObjs == "" {
listObjs = objName // NOTE: "pure" prefix comment in parseObjListTemplate (above)
}
if listObjs != "" {
a.rsrc.lr.ObjNames = splitCsv(listObjs)
} else {
a.rsrc.lr.Template = tmplObjs
}
return
}
func (*archput) verb() string { return "APPEND" }
func (a *archput) dest() string { return a.dst.bck.Cname(a.dst.oname) }
func (a *archput) parse(c *cli.Context) (err error) {
a.archpath = parseStrFlag(c, archpathFlag)
a.appendOnly = flagIsSet(c, archAppendOnlyFlag)
a.appendOrPut = flagIsSet(c, archAppendOrPutFlag)
if a.appendOnly && a.appendOrPut {
return incorrectUsageMsg(c, errFmtExclusive, qflprn(archAppendOnlyFlag), qflprn(archAppendOrPutFlag))
}
err = a.putargs.parse(c, false /*empty dst oname ok*/)
return
}