From e3febd2a4165dc9a284168efd6e6d09bf43b5a96 Mon Sep 17 00:00:00 2001
From: Alex Aizman <alex.aizman@gmail.com>
Date: Tue, 24 Sep 2024 16:33:03 -0400
Subject: [PATCH] CLI: when 'ls bucket/objname' becomes 'ls bucket --prefix
 objname'

Signed-off-by: Alex Aizman <alex.aizman@gmail.com>
---
 api/bucket.go              |  5 +++--
 cmd/cli/cli/bucket_hdlr.go |  5 ++++-
 cmd/cli/cli/object.go      | 15 ++++++++-------
 cmd/cli/cli/show_hdlr.go   |  3 ++-
 4 files changed, 17 insertions(+), 11 deletions(-)

diff --git a/api/bucket.go b/api/bucket.go
index cf3740b4c5..7fdb8ba06c 100644
--- a/api/bucket.go
+++ b/api/bucket.go
@@ -12,7 +12,6 @@ import (
 	"github.com/NVIDIA/aistore/api/apc"
 	"github.com/NVIDIA/aistore/cmn"
 	"github.com/NVIDIA/aistore/cmn/cos"
-	"github.com/NVIDIA/aistore/cmn/debug"
 	jsoniter "github.com/json-iterator/go"
 )
 
@@ -92,7 +91,9 @@ func hdr2msg(bck cmn.Bck, status int, err error) error {
 	if !ok {
 		return err
 	}
-	debug.Assert(herr.Status == status, herr.Status, " vs ", status)
+	if status == 0 && herr.Status != 0 { // (connection refused)
+		return err
+	}
 
 	quoted := "\"" + bck.Cname("") + "\""
 	if !bck.IsQuery() && status == http.StatusNotFound {
diff --git a/cmd/cli/cli/bucket_hdlr.go b/cmd/cli/cli/bucket_hdlr.go
index 347d7eeae8..b0f4edfc8c 100644
--- a/cmd/cli/cli/bucket_hdlr.go
+++ b/cmd/cli/cli/bucket_hdlr.go
@@ -617,12 +617,15 @@ func listAnyHandler(c *cli.Context) error {
 		if _, err := headBucket(bck, true /* don't add */); err != nil {
 			return err
 		}
-		err := showObjProps(c, bck, objName)
+		notfound, err := showObjProps(c, bck, objName)
 		if err == nil {
 			if _, errV := archive.Mime("", objName); errV == nil {
 				fmt.Fprintf(c.App.Writer, "\n('ais ls %s %s' to list archived contents, %s for details)\n",
 					bck.Cname(objName), flprn(listArchFlag), qflprn(cli.HelpFlag))
 			}
+		} else if notfound {
+			prefix := objName
+			err = listObjects(c, bck, prefix, false)
 		}
 		return err
 	case bck.Name == "" || flagIsSet(c, bckSummaryFlag): // list or summarize bucket(s)
diff --git a/cmd/cli/cli/object.go b/cmd/cli/cli/object.go
index 5f12f2b056..4b17eaa426 100644
--- a/cmd/cli/cli/object.go
+++ b/cmd/cli/cli/object.go
@@ -252,7 +252,7 @@ func calcPutRefresh(c *cli.Context) time.Duration {
 }
 
 // via `ais ls bucket/object` and `ais show bucket/object`
-func showObjProps(c *cli.Context, bck cmn.Bck, objName string) error {
+func showObjProps(c *cli.Context, bck cmn.Bck, objName string) (notfound bool, _ error) {
 	var (
 		propsFlag     []string
 		selectedProps []string
@@ -263,15 +263,16 @@ func showObjProps(c *cli.Context, bck cmn.Bck, objName string) error {
 		units, errU = parseUnitsFlag(c, unitsFlag)
 	)
 	if errU != nil {
-		return errU
+		return false, errU
 	}
 	if flagIsSet(c, objNotCachedPropsFlag) || flagIsSet(c, allObjsOrBcksFlag) {
 		hargs.FltPresence = apc.FltExists
 	}
 	objProps, err := api.HeadObject(apiBP, bck, objName, hargs)
 	if err != nil {
-		if !cmn.IsStatusNotFound(err) {
-			return err
+		notfound = cmn.IsStatusNotFound(err)
+		if !notfound {
+			return notfound, err
 		}
 		var hint string
 		if apc.IsFltPresent(hargs.FltPresence) && bck.IsRemote() {
@@ -281,7 +282,7 @@ func showObjProps(c *cli.Context, bck cmn.Bck, objName string) error {
 				hint = fmt.Sprintf(" (tip: try %s option)", qflprn(objNotCachedPropsFlag))
 			}
 		}
-		return fmt.Errorf("%q not found in %s%s", objName, bck.Cname(""), hint)
+		return notfound, fmt.Errorf("%q not found in %s%s", objName, bck.Cname(""), hint)
 	}
 
 	if flagIsSet(c, allPropsFlag) {
@@ -329,9 +330,9 @@ func showObjProps(c *cli.Context, bck cmn.Bck, objName string) error {
 	})
 
 	if flagIsSet(c, noHeaderFlag) {
-		return teb.Print(propNVs, teb.PropValTmplNoHdr)
+		return false, teb.Print(propNVs, teb.PropValTmplNoHdr)
 	}
-	return teb.Print(propNVs, teb.PropValTmpl)
+	return false, teb.Print(propNVs, teb.PropValTmpl)
 }
 
 func propVal(op *cmn.ObjectProps, name string) (v string) {
diff --git a/cmd/cli/cli/show_hdlr.go b/cmd/cli/cli/show_hdlr.go
index 65882a4dfc..e7c3416cf8 100644
--- a/cmd/cli/cli/show_hdlr.go
+++ b/cmd/cli/cli/show_hdlr.go
@@ -580,7 +580,8 @@ func showObjectHandler(c *cli.Context) error {
 	if _, err := headBucket(bck, true /* don't add */); err != nil {
 		return err
 	}
-	return showObjProps(c, bck, object)
+	_, err = showObjProps(c, bck, object)
+	return err
 }
 
 func showBckPropsHandler(c *cli.Context) error {