package progressui import ( "context" "fmt" "io" "os" "sort" "strings" "time" digest "github.com/opencontainers/go-digest" "github.com/tonistiigi/units" ) const antiFlicker = 5 * time.Second const maxDelay = 10 * time.Second const minTimeDelta = 5 * time.Second const minProgressDelta = 0.05 // % type lastStatus struct { Current int64 Timestamp time.Time } type textMux struct { w io.Writer current digest.Digest last map[string]lastStatus notFirst bool } func (p *textMux) printVtx(t *trace, dgst digest.Digest) { if p.last == nil { p.last = make(map[string]lastStatus) } v, ok := t.byDigest[dgst] if !ok { return } if dgst != p.current { if p.current != "" { old := t.byDigest[p.current] if old.logsPartial { fmt.Fprintln(p.w, "") } old.logsOffset = 0 old.count = 0 fmt.Fprintf(p.w, "#%d ...\n", old.index) } if p.notFirst { fmt.Fprintln(p.w, "") } else { p.notFirst = true } if os.Getenv("PROGRESS_NO_TRUNC") == "1" { fmt.Fprintf(p.w, "#%d %s\n", v.index, v.Name) fmt.Fprintf(p.w, "#%d %s\n", v.index, v.Digest) } else { fmt.Fprintf(p.w, "#%d %s\n", v.index, limitString(v.Name, 72)) } } if len(v.events) != 0 { v.logsOffset = 0 } for _, ev := range v.events { fmt.Fprintf(p.w, "#%d %s\n", v.index, ev) } v.events = v.events[:0] for _, s := range v.statuses { if _, ok := v.statusUpdates[s.ID]; ok { doPrint := true if last, ok := p.last[s.ID]; ok && s.Completed == nil { var progressDelta float64 if s.Total > 0 { progressDelta = float64(s.Current-last.Current) / float64(s.Total) } timeDelta := s.Timestamp.Sub(last.Timestamp) if progressDelta < minProgressDelta && timeDelta < minTimeDelta { doPrint = false } } if !doPrint { continue } p.last[s.ID] = lastStatus{ Timestamp: s.Timestamp, Current: s.Current, } var bytes string if s.Total != 0 { bytes = fmt.Sprintf(" %.2f / %.2f", units.Bytes(s.Current), units.Bytes(s.Total)) } else if s.Current != 0 { bytes = fmt.Sprintf(" %.2f", units.Bytes(s.Current)) } var tm string endTime := s.Timestamp if s.Completed != nil { endTime = *s.Completed } if s.Started != nil { diff := endTime.Sub(*s.Started).Seconds() if diff > 0.01 { tm = fmt.Sprintf(" %.1fs", diff) } } if s.Completed != nil { tm += " done" } fmt.Fprintf(p.w, "#%d %s%s%s\n", v.index, s.ID, bytes, tm) } } v.statusUpdates = map[string]struct{}{} for i, l := range v.logs { if i == 0 { l = l[v.logsOffset:] } fmt.Fprintf(p.w, "%s", []byte(l)) if i != len(v.logs)-1 || !v.logsPartial { fmt.Fprintln(p.w, "") } } if len(v.logs) > 0 { if v.logsPartial { v.logs = v.logs[len(v.logs)-1:] v.logsOffset = len(v.logs[0]) } else { v.logs = nil v.logsOffset = 0 } } p.current = dgst if v.Completed != nil { p.current = "" v.count = 0 if v.Error != "" { if v.logsPartial { fmt.Fprintln(p.w, "") } if strings.HasSuffix(v.Error, context.Canceled.Error()) { fmt.Fprintf(p.w, "#%d CANCELED\n", v.index) } else { fmt.Fprintf(p.w, "#%d ERROR: %s\n", v.index, v.Error) } } else if v.Cached { fmt.Fprintf(p.w, "#%d CACHED\n", v.index) } else { tm := "" if v.Started != nil { tm = fmt.Sprintf(" %.1fs", v.Completed.Sub(*v.Started).Seconds()) } fmt.Fprintf(p.w, "#%d DONE%s\n", v.index, tm) } } delete(t.updates, dgst) } func sortCompleted(t *trace, m map[digest.Digest]struct{}) []digest.Digest { out := make([]digest.Digest, 0, len(m)) for k := range m { out = append(out, k) } sort.Slice(out, func(i, j int) bool { return t.byDigest[out[i]].Completed.Before(*t.byDigest[out[j]].Completed) }) return out } func (p *textMux) print(t *trace) { completed := map[digest.Digest]struct{}{} rest := map[digest.Digest]struct{}{} for dgst := range t.updates { v, ok := t.byDigest[dgst] if !ok { continue } if v.Vertex.Completed != nil { completed[dgst] = struct{}{} } else { rest[dgst] = struct{}{} } } current := p.current // items that have completed need to be printed first if _, ok := completed[current]; ok { p.printVtx(t, current) } for _, dgst := range sortCompleted(t, completed) { if dgst != current { p.printVtx(t, dgst) } } if len(rest) == 0 { if current != "" { if v := t.byDigest[current]; v.Started != nil && v.Completed == nil { return } } // make any open vertex active for dgst, v := range t.byDigest { if v.Started != nil && v.Completed == nil { p.printVtx(t, dgst) return } } return } // now print the active one if _, ok := rest[current]; ok { p.printVtx(t, current) } stats := map[digest.Digest]*vtxStat{} now := time.Now() sum := 0.0 var max digest.Digest if current != "" { rest[current] = struct{}{} } for dgst := range rest { v, ok := t.byDigest[dgst] if !ok { continue } tm := now.Sub(*v.lastBlockTime) speed := float64(v.count) / tm.Seconds() overLimit := tm > maxDelay && dgst != current stats[dgst] = &vtxStat{blockTime: tm, speed: speed, overLimit: overLimit} sum += speed if overLimit || max == "" || stats[max].speed < speed { max = dgst } } for dgst := range stats { stats[dgst].share = stats[dgst].speed / sum } if _, ok := completed[current]; ok || current == "" { p.printVtx(t, max) return } // show items that were hidden for dgst := range rest { if stats[dgst].overLimit { p.printVtx(t, dgst) return } } // fair split between vertexes if 1.0/(1.0-stats[current].share)*antiFlicker.Seconds() < stats[current].blockTime.Seconds() { p.printVtx(t, max) return } } type vtxStat struct { blockTime time.Duration speed float64 share float64 overLimit bool } func limitString(s string, l int) string { if len(s) > l { return s[:l] + "..." } return s }