feat: support progressed output in blob push and blob get

Makefile

@@ -33,7 +33,7 @@ LDFLAGS += -X $(PROJECT_PKG)/internal/version.GitTreeState=${GIT_DIRTY}
 
 .PHONY: test
 test: tidy vendor check-encoding  ## tidy and run tests
-	$(GO_EXE) test -race -v -coverprofile=coverage.txt -covermode=atomic ./...
+	$(GO_EXE) test -race -v -coverprofile=coverage.txt -covermode=atomic -coverpkg=./... ./...
 
 .PHONY: teste2e
 teste2e:  ## run end to end tests

cmd/oras/internal/display/console/console.go

@@ -0,0 +1,95 @@
+/*
+Copyright The ORAS Authors.
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package console
+
+import (
+	"os"
+
+	"github.com/containerd/console"
+	"github.com/morikuni/aec"
+)
+
+const (
+	// MinWidth is the minimal width of supported console.
+	MinWidth = 80
+	// MinHeight is the minimal height of supported console.
+	MinHeight = 10
+	// cannot use aec.Save since DEC has better compatilibity than SCO
+	Save = "\0337"
+	// cannot use aec.Restore since DEC has better compatilibity than SCO
+	Restore = "\0338"
+)
+
+// Console is a wrapper around containerd's console.Console and ANSI escape
+// codes.
+type Console struct {
+	console.Console
+}
+
+// Size returns the width and height of the console.
+// If the console size cannot be determined, returns a default value of 80x10.
+func (c *Console) Size() (width, height int) {
+	width = MinWidth
+	height = MinHeight
+	size, err := c.Console.Size()
+	if err == nil {
+		if size.Height > MinHeight {
+			height = int(size.Height)
+		}
+		if size.Width > MinWidth {
+			width = int(size.Width)
+		}
+	}
+	return
+}
+
+// New generates a Console from a file.
+func New(f *os.File) (*Console, error) {
+	c, err := console.ConsoleFromFile(f)
+	if err != nil {
+		return nil, err
+	}
+	return &Console{c}, nil
+}
+
+// Save saves the current cursor position.
+func (c *Console) Save() {
+	_, _ = c.Write([]byte(aec.Hide.Apply(Save)))
+}
+
+// NewRow allocates a horizontal space to the output area with scroll if needed.
+func (c *Console) NewRow() {
+	_, _ = c.Write([]byte(Restore))
+	_, _ = c.Write([]byte("\n"))
+	_, _ = c.Write([]byte(Save))
+}
+
+// OutputTo outputs a string to a specific line.
+func (c *Console) OutputTo(upCnt uint, str string) {
+	_, _ = c.Write([]byte(Restore))
+	_, _ = c.Write([]byte(aec.PreviousLine(upCnt).Apply(str)))
+	_, _ = c.Write([]byte(" "))
+	_, _ = c.Write([]byte(aec.EraseLine(aec.EraseModes.Tail).String()))
+}
+
+// Restore restores the saved cursor position.
+func (c *Console) Restore() {
+	// cannot use aec.Restore since DEC has better compatilibity than SCO
+	_, _ = c.Write([]byte(Restore))
+	_, _ = c.Write([]byte(aec.Column(0).
+		With(aec.EraseLine(aec.EraseModes.All)).
+		With(aec.Show).String()))
+}

cmd/oras/internal/display/console/console_test.go

@@ -0,0 +1,63 @@
+//go:build darwin || freebsd || linux || netbsd || openbsd || solaris
+
+/*
+Copyright The ORAS Authors.
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package console
+
+import (
+	"testing"
+
+	"github.com/containerd/console"
+)
+
+func validateSize(t *testing.T, gotWidth, gotHeight, wantWidth, wantHeight int) {
+	t.Helper()
+	if gotWidth != wantWidth {
+		t.Errorf("Console.Size() gotWidth = %v, want %v", gotWidth, wantWidth)
+	}
+	if gotHeight != wantHeight {
+		t.Errorf("Console.Size() gotHeight = %v, want %v", gotHeight, wantHeight)
+	}
+}
+
+func TestConsole_Size(t *testing.T) {
+	pty, _, err := console.NewPty()
+	if err != nil {
+		t.Fatal(err)
+	}
+	c := &Console{
+		Console: pty,
+	}
+
+	// minimal width and height
+	gotWidth, gotHeight := c.Size()
+	validateSize(t, gotWidth, gotHeight, MinWidth, MinHeight)
+
+	// zero width
+	_ = pty.Resize(console.WinSize{Width: 0, Height: MinHeight})
+	gotWidth, gotHeight = c.Size()
+	validateSize(t, gotWidth, gotHeight, MinWidth, MinHeight)
+
+	// zero height
+	_ = pty.Resize(console.WinSize{Width: MinWidth, Height: 0})
+	gotWidth, gotHeight = c.Size()
+	validateSize(t, gotWidth, gotHeight, MinWidth, MinHeight)
+
+	// valid zero and height
+	_ = pty.Resize(console.WinSize{Width: 200, Height: 100})
+	gotWidth, gotHeight = c.Size()
+	validateSize(t, gotWidth, gotHeight, 200, 100)
+}

cmd/oras/internal/display/console/testutils/testutils.go

@@ -0,0 +1,71 @@
+//go:build darwin || freebsd || linux || netbsd || openbsd || solaris
+
+/*
+Copyright The ORAS Authors.
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package testutils
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"os"
+	"strings"
+	"sync"
+
+	"github.com/containerd/console"
+)
+
+// NewPty creates a new pty pair for testing, caller is responsible for closing
+// the returned device file if err is not nil.
+func NewPty() (console.Console, *os.File, error) {
+	pty, devicePath, err := console.NewPty()
+	if err != nil {
+		return nil, nil, err
+	}
+	device, err := os.OpenFile(devicePath, os.O_RDWR, 0)
+	if err != nil {
+		return nil, nil, err
+	}
+	return pty, device, nil
+}
+
+// MatchPty checks that the output matches the expected strings in specified
+// order.
+func MatchPty(pty console.Console, device *os.File, expected ...string) error {
+	var wg sync.WaitGroup
+	wg.Add(1)
+	var buffer bytes.Buffer
+	go func() {
+		defer wg.Done()
+		_, _ = io.Copy(&buffer, pty)
+	}()
+	device.Close()
+	wg.Wait()
+
+	return OrderedMatch(buffer.String(), expected...)
+}
+
+// OrderedMatch matches the got with the expected strings in order.
+func OrderedMatch(got string, want ...string) error {
+	for _, e := range want {
+		i := strings.Index(got, e)
+		if i < 0 {
+			return fmt.Errorf("failed to find %q in %q", e, got)
+		}
+		got = got[i+len(e):]
+	}
+	return nil
+}

cmd/oras/internal/display/progress/humanize/bytes.go

@@ -0,0 +1,60 @@
+/*
+Copyright The ORAS Authors.
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package humanize
+
+import (
+	"fmt"
+	"math"
+)
+
+const base = 1024.0
+
+var units = []string{"B", "kB", "MB", "GB", "TB"}
+
+type Bytes struct {
+	Size float64
+	Unit string
+}
+
+// ToBytes converts size in bytes to human readable format.
+func ToBytes(sizeInBytes int64) Bytes {
+	f := float64(sizeInBytes)
+	if f < base {
+		return Bytes{f, units[0]}
+	}
+	e := int(math.Floor(math.Log(f) / math.Log(base)))
+	if e >= len(units) {
+		// only support up to TB
+		e = len(units) - 1
+	}
+	p := f / math.Pow(base, float64(e))
+	return Bytes{RoundTo(p), units[e]}
+}
+
+// String returns the string representation of Bytes.
+func (b Bytes) String() string {
+	return fmt.Sprintf("%v %2s", b.Size, b.Unit)
+}
+
+// RoundTo makes length of the size string to less than or equal to 4.
+func RoundTo(size float64) float64 {
+	if size < 10 {
+		return math.Round(size*100) / 100
+	} else if size < 100 {
+		return math.Round(size*10) / 10
+	}
+	return math.Round(size)
+}

cmd/oras/internal/display/progress/humanize/bytes_test.go

@@ -0,0 +1,72 @@
+/*
+Copyright The ORAS Authors.
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package humanize
+
+import (
+	"reflect"
+	"testing"
+)
+
+func TestRoundTo(t *testing.T) {
+	type args struct {
+		quantity float64
+	}
+	tests := []struct {
+		name string
+		args args
+		want float64
+	}{
+		{"round to 2 digit", args{1.223}, 1.22},
+		{"round to 1 digit", args{12.23}, 12.2},
+		{"round to no digit", args{122.6}, 123},
+		{"round to no digit", args{1223.123}, 1223},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := RoundTo(tt.args.quantity); got != tt.want {
+				t.Errorf("RoundTo() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}
+
+func TestToBytes(t *testing.T) {
+	type args struct {
+		sizeInBytes int64
+	}
+	tests := []struct {
+		name string
+		args args
+		want Bytes
+	}{
+		{"0 bytes", args{0}, Bytes{0, "B"}},
+		{"1023 bytes", args{1023}, Bytes{1023, "B"}},
+		{"1 kB", args{1024}, Bytes{1, "kB"}},
+		{"1.5 kB", args{1024 + 512}, Bytes{1.5, "kB"}},
+		{"12.5 kB", args{1024 * 12.5}, Bytes{12.5, "kB"}},
+		{"512.5 kB", args{1024 * 512.5}, Bytes{513, "kB"}},
+		{"1 MB", args{1024 * 1024}, Bytes{1, "MB"}},
+		{"1 GB", args{1024 * 1024 * 1024}, Bytes{1, "GB"}},
+		{"1 TB", args{1024 * 1024 * 1024 * 1024}, Bytes{1, "TB"}},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := ToBytes(tt.args.sizeInBytes); !reflect.DeepEqual(got, tt.want) {
+				t.Errorf("ToBytes() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}