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progress.go
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progress.go
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// This file is derived from CNCF's containerd project
// The original code may be found :
// https://github.com/containerd/containerd/blob/v1.0.2/cmd/ctr/commands/content/push.go#L136-L194
// https://github.com/containerd/containerd/blob/v1.0.2/cmd/ctr/commands/content/fetch.go#L103-L316
//
// Copyright 2015 The containerd 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.
//
// Modifications are, where applicable, Copyright 2018 Amazon.com, Inc. or its affiliates.
// Licensed under the Apache License 2.0
package main
import (
"fmt"
"io"
"sync"
"time"
"github.com/containerd/containerd/pkg/progress"
"github.com/containerd/containerd/remotes/docker"
units "github.com/docker/go-units"
)
type pushjobs struct {
jobs map[string]struct{}
ordered []string
tracker docker.StatusTracker
mu sync.Mutex
}
func newPushJobs(tracker docker.StatusTracker) *pushjobs {
return &pushjobs{
jobs: make(map[string]struct{}),
tracker: tracker,
}
}
func (j *pushjobs) add(ref string) {
j.mu.Lock()
defer j.mu.Unlock()
if _, ok := j.jobs[ref]; ok {
return
}
j.ordered = append(j.ordered, ref)
j.jobs[ref] = struct{}{}
}
func (j *pushjobs) status() []StatusInfo {
j.mu.Lock()
defer j.mu.Unlock()
statuses := make([]StatusInfo, 0, len(j.jobs))
for _, name := range j.ordered {
si := StatusInfo{
Ref: name,
}
status, err := j.tracker.GetStatus(name)
if err != nil {
si.Status = "waiting"
} else {
si.Offset = status.Offset
si.Total = status.Total
si.StartedAt = status.StartedAt
si.UpdatedAt = status.UpdatedAt
if status.Offset >= status.Total {
if status.UploadUUID == "" {
si.Status = "done"
} else {
si.Status = "committing"
}
} else {
si.Status = "uploading"
}
}
statuses = append(statuses, si)
}
return statuses
}
// StatusInfo holds the status info for an upload or download
type StatusInfo struct {
Ref string
Status string
Offset int64
Total int64
StartedAt time.Time
UpdatedAt time.Time
}
// Display pretty prints out the download or upload progress
func display(w io.Writer, statuses []StatusInfo, start time.Time) {
var total int64
for _, status := range statuses {
total += status.Offset
switch status.Status {
case "downloading", "uploading":
var bar progress.Bar
if status.Total > 0.0 {
bar = progress.Bar(float64(status.Offset) / float64(status.Total))
}
fmt.Fprintf(w, "%s:\t%s\t%40r\t%8.8s/%s\t\n",
status.Ref,
status.Status,
bar,
progress.Bytes(status.Offset), progress.Bytes(status.Total))
case "resolving", "waiting":
bar := progress.Bar(0.0)
fmt.Fprintf(w, "%s:\t%s\t%40r\t\n",
status.Ref,
status.Status,
bar)
case "done":
if status.Total > 0.0 {
bar := progress.Bar(1.0)
duration := status.UpdatedAt.Sub(status.StartedAt)
fmt.Fprintf(w, "%s:\t%s\t%40r\t%s\t%s\t%s\t\n",
status.Ref,
status.Status,
bar,
progress.Bytes(status.Total),
units.HumanDuration(duration),
progress.NewBytesPerSecond(status.Total, duration))
continue
}
fallthrough
default:
bar := progress.Bar(1.0)
fmt.Fprintf(w, "%s:\t%s\t%40r\t\n",
status.Ref,
status.Status,
bar)
}
}
fmt.Fprintf(w, "elapsed: %-4.1fs\ttotal: %7.6v\t(%v)\t\n",
time.Since(start).Seconds(),
// TODO(stevvooe): These calculations are actually way off.
// Need to account for previously downloaded data. These
// will basically be right for a download the first time
// but will be skewed if restarting, as it includes the
// data into the start time before.
progress.Bytes(total),
progress.NewBytesPerSecond(total, time.Since(start)))
}