fix: support 'mc put --if-not-exists'

cmd/client-s3.go

@@ -1168,6 +1168,11 @@ func (c *S3Client) Put(ctx context.Context, reader io.Reader, size int64, progre
 		opts.SendContentMd5 = true
 	}
 
+	if putOpts.ifNotExists {
+		// Only supported in newer MinIO releases.
+		opts.SetMatchETagExcept("*")
+	}
+
 	ui, e := c.api.PutObject(ctx, bucket, object, reader, size, opts)
 	if e != nil {
 		errResponse := minio.ToErrorResponse(e)

cmd/client.go

@@ -62,6 +62,7 @@ type PutOptions struct {
 	multipartSize         uint64
 	multipartThreads      uint
 	concurrentStream      bool
+	ifNotExists           bool
 }
 
 // StatOptions holds options of the HEAD operation

cmd/common-methods.go

@@ -494,6 +494,7 @@ func uploadSourceToTargetURL(ctx context.Context, uploadOpts uploadSourceToTarge
 			isPreserve:       uploadOpts.preserve,
 			multipartSize:    multipartSize,
 			multipartThreads: uint(multipartThreads),
+			ifNotExists:      uploadOpts.ifNotExists,
 		}
 
 		if isReadAt(reader) || length == 0 {
@@ -576,4 +577,5 @@ type uploadSourceToTargetURLOpts struct {
 	multipartSize       string
 	multipartThreads    string
 	updateProgressTotal bool
+	ifNotExists         bool
 }

cmd/cp-main.go

@@ -264,6 +264,7 @@ func doCopy(ctx context.Context, copyOpts doCopyOpts) URLs {
 		multipartSize:       copyOpts.multipartSize,
 		multipartThreads:    copyOpts.multipartThreads,
 		updateProgressTotal: copyOpts.updateProgressTotal,
+		ifNotExists:         copyOpts.ifNotExists,
 	})
 	if copyOpts.isMvCmd && urls.Error == nil {
 		rmManager.add(ctx, sourceAlias, sourceURL.String())
@@ -557,4 +558,5 @@ type doCopyOpts struct {
 	updateProgressTotal      bool
 	multipartSize            string
 	multipartThreads         string
+	ifNotExists              bool
 }

cmd/get-main.go

@@ -27,7 +27,12 @@ import (
 
 // get command flags.
 var (
-	getFlags = []cli.Flag{}
+	getFlags = []cli.Flag{
+		cli.StringFlag{
+			Name:  "version-id, vid",
+			Usage: "get a specific version of an object",
+		},
+	}
 )
 
 // Get command.
@@ -50,10 +55,10 @@ FLAGS:
 
 EXAMPLES:
   1. Get an object from MinIO storage to local file system
-    {{.Prompt}} {{.HelpName}} play/mybucket/object path-to/object
+     {{.Prompt}} {{.HelpName}} play/mybucket/object path-to/object
 
   2. Get an object from MinIO storage using encryption
-    {{.Prompt}} {{.HelpName}} --enc-c "play/mybucket/object=MDEyMzQ1Njc4OTAxMjM0NTY3ODkwMTIzNDU2Nzg5MDA" play/mybucket/object path-to/object
+     {{.Prompt}} {{.HelpName}} --enc-c "play/mybucket/object=MDEyMzQ1Njc4OTAxMjM0NTY3ODkwMTIzNDU2Nzg5MDA" play/mybucket/object path-to/object
 `,
 }
 
@@ -94,6 +99,7 @@ func mainGet(cliCtx *cli.Context) (e error) {
 			targetURL:               targetURL,
 			encKeyDB:                encryptionKeys,
 			ignoreBucketExistsCheck: true,
+			versionID:               cliCtx.String("version-id"),
 		}
 
 		for getURLs := range prepareGetURLs(ctx, opts) {

cmd/put-main.go

@@ -41,6 +41,11 @@ var (
 			Usage: "each part size",
 			Value: "16MiB",
 		},
+		cli.BoolFlag{
+			Name:   "if-not-exists",
+			Usage:  "upload only if object does not exist",
+			Hidden: true,
+		},
 	}
 )
 
@@ -68,19 +73,19 @@ ENVIRONMENT VARIABLES:
 
 EXAMPLES:
   1. Put an object from local file system to S3 storage
-		{{.Prompt}} {{.HelpName}} path-to/object play/mybucket
+     {{.Prompt}} {{.HelpName}} path-to/object play/mybucket
 
   2. Put an object from local file system to S3 bucket with name
-		{{.Prompt}} {{.HelpName}} path-to/object play/mybucket/object
+     {{.Prompt}} {{.HelpName}} path-to/object play/mybucket/object
 
   3. Put an object from local file system to S3 bucket under a prefix
-		{{.Prompt}} {{.HelpName}} path-to/object play/mybucket/object-prefix/
+     {{.Prompt}} {{.HelpName}} path-to/object play/mybucket/object-prefix/
 
-	4. Put an object to MinIO storage using sse-c encryption
-		{{.Prompt}} {{.HelpName}} --enc-c "play/mybucket/object=MDEyMzQ1Njc4OTAxMjM0NTY3ODkwMTIzNDU2Nzg5MDA" path-to/object play/mybucket/object 
+  4. Put an object to MinIO storage using sse-c encryption
+     {{.Prompt}} {{.HelpName}} --enc-c "play/mybucket/object=MDEyMzQ1Njc4OTAxMjM0NTY3ODkwMTIzNDU2Nzg5MDA" path-to/object play/mybucket/object 
 
-	5. Put an object to MinIO storage using sse-kms encryption
-		{{.Prompt}} {{.HelpName}} --enc-kms path-to/object play/mybucket/object 
+  5. Put an object to MinIO storage using sse-kms encryption
+     {{.Prompt}} {{.HelpName}} --enc-kms path-to/object play/mybucket/object 
 `,
 }
 
@@ -93,11 +98,13 @@ func mainPut(cliCtx *cli.Context) (e error) {
 
 	ctx, cancelPut := context.WithCancel(globalContext)
 	defer cancelPut()
+
 	// part size
 	size := cliCtx.String("s")
 	if size == "" {
-		size = "16mb"
+		size = "32MiB"
 	}
+
 	_, perr := humanize.ParseBytes(size)
 	if perr != nil {
 		fatalIf(probe.NewError(perr), "Unable to parse part size")
@@ -175,10 +182,11 @@ func mainPut(cliCtx *cli.Context) (e error) {
 				encryptionKeys:   encryptionKeys,
 				multipartSize:    size,
 				multipartThreads: strconv.Itoa(threads),
+				ifNotExists:      cliCtx.Bool("if-not-exists"),
 			})
 			if urls.Error != nil {
-				e = urls.Error.ToGoError()
-				showLastProgressBar(pg, e)
+				showLastProgressBar(pg, urls.Error.ToGoError())
+				fatalIf(urls.Error.Trace(), "unable to upload")
 				return
 			}
 		}

functional-tests.sh

@@ -1038,7 +1038,6 @@ function run_test() {
 	test_copy_object_preserve_filesystem_attr
 	test_find
 	test_find_empty
-	test_bucket_replication
 	if [ -z "$MINT_MODE" ]; then
 		test_watch_object
 	fi

go.mod

@@ -19,7 +19,7 @@ require (
 	github.com/minio/colorjson v1.0.7
 	github.com/minio/filepath v1.0.0
 	github.com/minio/md5-simd v1.1.2 // indirect
-	github.com/minio/minio-go/v7 v7.0.70
+	github.com/minio/minio-go/v7 v7.0.72-0.20240618070918-0b004e328e1e
 	github.com/mitchellh/go-homedir v1.1.0
 	github.com/pkg/xattr v0.4.9
 	github.com/posener/complete v1.2.3

go.sum

@@ -134,8 +134,8 @@ github.com/minio/madmin-go/v3 v3.0.55-0.20240603092915-420a67132c32 h1:9se7/S4Al
 github.com/minio/madmin-go/v3 v3.0.55-0.20240603092915-420a67132c32/go.mod h1:IFAwr0XMrdsLovxAdCcuq/eoL4nRuMVQQv0iubJANQw=
 github.com/minio/md5-simd v1.1.2 h1:Gdi1DZK69+ZVMoNHRXJyNcxrMA4dSxoYHZSQbirFg34=
 github.com/minio/md5-simd v1.1.2/go.mod h1:MzdKDxYpY2BT9XQFocsiZf/NKVtR7nkE4RoEpN+20RM=
-github.com/minio/minio-go/v7 v7.0.70 h1:1u9NtMgfK1U42kUxcsl5v0yj6TEOPR497OAQxpJnn2g=
-github.com/minio/minio-go/v7 v7.0.70/go.mod h1:4yBA8v80xGA30cfM3fz0DKYMXunWl/AV/6tWEs9ryzo=
+github.com/minio/minio-go/v7 v7.0.72-0.20240618070918-0b004e328e1e h1:Ye/gsaKgKD9lg1BgjG5fsGZdKevVpJO9bzqQg7badV8=
+github.com/minio/minio-go/v7 v7.0.72-0.20240618070918-0b004e328e1e/go.mod h1:4yBA8v80xGA30cfM3fz0DKYMXunWl/AV/6tWEs9ryzo=
 github.com/minio/mux v1.9.0 h1:dWafQFyEfGhJvK6AwLOt83bIG5bxKxKJnKMCi0XAaoA=
 github.com/minio/mux v1.9.0/go.mod h1:1pAare17ZRL5GpmNL+9YmqHoWnLmMZF9C/ioUCfy0BQ=
 github.com/minio/pkg/v3 v3.0.0 h1:0vOKHgwpya//mb7RH0i1lyPMH2IBBF5hJMNY5Bk2WlY=