podmanv2 history and image remove templates

remove the use of template functions images and history to allow for straight-forward user experience.  instead of templates we use structs and struct methods.

Signed-off-by: Brent Baude <bbaude@redhat.com>

5 files changed, 148 insertions, 136 deletions

diff --git a/cmd/podmanV2/images/history.go b/cmd/podmanV2/images/history.go
index f6f15e2f2..48575b33a 100644
--- a/cmd/podmanV2/images/history.go
+++ b/cmd/podmanV2/images/history.go
@@ -8,10 +8,11 @@ import (
 	"text/tabwriter"
 	"text/template"
 	"time"
+	"unicode"
 
 	"github.com/containers/libpod/cmd/podmanV2/registry"
-	"github.com/containers/libpod/cmd/podmanV2/report"
 	"github.com/containers/libpod/pkg/domain/entities"
+	"github.com/docker/go-units"
 	jsoniter "github.com/json-iterator/go"
 	"github.com/pkg/errors"
 	"github.com/spf13/cobra"
@@ -86,10 +87,13 @@ func history(cmd *cobra.Command, args []string) error {
 		}
 		return err
 	}
-
+	var hr []historyreporter
+	for _, l := range results.Layers {
+		hr = append(hr, historyreporter{l})
+	}
 	// Defaults
 	hdr := "ID\tCREATED\tCREATED BY\tSIZE\tCOMMENT\n"
-	row := "{{slice .ID 0 12}}\t{{humanDuration .Created}}\t{{ellipsis .CreatedBy 45}}\t{{.Size}}\t{{.Comment}}\n"
+	row := "{{.ID}}\t{{.Created}}\t{{.CreatedBy}}\t{{.Size}}\t{{.Comment}}\n"
 
 	if len(opts.format) > 0 {
 		hdr = ""
@@ -100,9 +104,9 @@ func history(cmd *cobra.Command, args []string) error {
 	} else {
 		switch {
 		case opts.human:
-			row = "{{slice .ID 0 12}}\t{{humanDuration .Created}}\t{{ellipsis .CreatedBy 45}}\t{{humanSize .Size}}\t{{.Comment}}\n"
+			row = "{{.ID}}\t{{.Created}}\t{{.CreatedBy}}\t{{.Size}}\t{{.Comment}}\n"
 		case opts.noTrunc:
-			row = "{{.ID}}\t{{humanDuration .Created}}\t{{.CreatedBy}}\t{{humanSize .Size}}\t{{.Comment}}\n"
+			row = "{{.ID}}\t{{.Created}}\t{{.CreatedBy}}\t{{.Size}}\t{{.Comment}}\n"
 		case opts.quiet:
 			hdr = ""
 			row = "{{.ID}}\n"
@@ -110,14 +114,40 @@ func history(cmd *cobra.Command, args []string) error {
 	}
 	format := hdr + "{{range . }}" + row + "{{end}}"
 
-	tmpl := template.Must(template.New("report").Funcs(report.PodmanTemplateFuncs()).Parse(format))
+	tmpl := template.Must(template.New("report").Parse(format))
 	w := tabwriter.NewWriter(os.Stdout, 8, 2, 2, ' ', 0)
-
-	_, _ = w.Write(report.ReportHeader("id", "created", "created by", "size", "comment"))
-	err = tmpl.Execute(w, results.Layers)
+	err = tmpl.Execute(w, hr)
 	if err != nil {
 		fmt.Fprintln(os.Stderr, errors.Wrapf(err, "Failed to print report"))
 	}
 	w.Flush()
 	return nil
 }
+
+type historyreporter struct {
+	entities.ImageHistoryLayer
+}
+
+func (h historyreporter) Created() string {
+	return units.HumanDuration(time.Since(time.Unix(h.ImageHistoryLayer.Created, 0))) + " ago"
+}
+
+func (h historyreporter) Size() string {
+	s := units.HumanSizeWithPrecision(float64(h.ImageHistoryLayer.Size), 3)
+	i := strings.LastIndexFunc(s, unicode.IsNumber)
+	return s[:i+1] + " " + s[i+1:]
+}
+
+func (h historyreporter) CreatedBy() string {
+	if len(h.ImageHistoryLayer.CreatedBy) > 45 {
+		return h.ImageHistoryLayer.CreatedBy[:45-3] + "..."
+	}
+	return h.ImageHistoryLayer.CreatedBy
+}
+
+func (h historyreporter) ID() string {
+	if !opts.noTrunc && len(h.ImageHistoryLayer.ID) >= 12 {
+		return h.ImageHistoryLayer.ID[0:12]
+	}
+	return h.ImageHistoryLayer.ID
+}
diff --git a/cmd/podmanV2/images/list.go b/cmd/podmanV2/images/list.go
index 6b02e239e..d594a4323 100644
--- a/cmd/podmanV2/images/list.go
+++ b/cmd/podmanV2/images/list.go
@@ -9,10 +9,11 @@ import (
 	"text/tabwriter"
 	"text/template"
 	"time"
+	"unicode"
 
 	"github.com/containers/libpod/cmd/podmanV2/registry"
-	"github.com/containers/libpod/cmd/podmanV2/report"
 	"github.com/containers/libpod/pkg/domain/entities"
+	"github.com/docker/go-units"
 	jsoniter "github.com/json-iterator/go"
 	"github.com/spf13/cobra"
 	"github.com/spf13/pflag"
@@ -133,16 +134,10 @@ func writeTemplate(imageS []*entities.ImageSummary, err error) error {
 	var (
 		hdr, row string
 	)
-	type image struct {
-		entities.ImageSummary
-		Repository string `json:"repository,omitempty"`
-		Tag        string `json:"tag,omitempty"`
-	}
-
-	imgs := make([]image, 0, len(imageS))
+	imgs := make([]imageReporter, 0, len(imageS))
 	for _, e := range imageS {
 		for _, tag := range e.RepoTags {
-			var h image
+			var h imageReporter
 			h.ImageSummary = *e
 			h.Repository, h.Tag = tokenRepoTag(tag)
 			imgs = append(imgs, h)
@@ -160,7 +155,7 @@ func writeTemplate(imageS []*entities.ImageSummary, err error) error {
 		}
 	}
 	format := hdr + "{{range . }}" + row + "{{end}}"
-	tmpl := template.Must(template.New("list").Funcs(report.PodmanTemplateFuncs()).Parse(format))
+	tmpl := template.Must(template.New("list").Parse(format))
 	w := tabwriter.NewWriter(os.Stdout, 8, 2, 2, ' ', 0)
 	defer w.Flush()
 	return tmpl.Execute(w, imgs)
@@ -208,7 +203,7 @@ func sortFunc(key string, data []*entities.ImageSummary) func(i, j int) bool {
 
 func imageListFormat(flags listFlagType) (string, string) {
 	if flags.quiet {
-		return "", "{{slice .ID 0 12}}\n"
+		return "", "{{.ID}}\n"
 	}
 
 	// Defaults
@@ -224,15 +219,15 @@ func imageListFormat(flags listFlagType) (string, string) {
 	if flags.noTrunc {
 		row += "\tsha256:{{.ID}}"
 	} else {
-		row += "\t{{slice .ID 0 12}}"
+		row += "\t{{.ID}}"
 	}
 
 	hdr += "\tCREATED\tSIZE"
-	row += "\t{{humanDuration .Created}}\t{{humanSize .Size}}"
+	row += "\t{{.Created}}\t{{.Size}}"
 
 	if flags.history {
 		hdr += "\tHISTORY"
-		row += "\t{{if .History}}{{join .History \", \"}}{{else}}<none>{{end}}"
+		row += "\t{{if .History}}{{.History}}{{else}}<none>{{end}}"
 	}
 
 	if flags.readOnly {
@@ -249,3 +244,30 @@ func imageListFormat(flags listFlagType) (string, string) {
 	row += "\n"
 	return hdr, row
 }
+
+type imageReporter struct {
+	Repository string `json:"repository,omitempty"`
+	Tag        string `json:"tag,omitempty"`
+	entities.ImageSummary
+}
+
+func (i imageReporter) ID() string {
+	if !listFlag.noTrunc && len(i.ImageSummary.ID) >= 12 {
+		return i.ImageSummary.ID[0:12]
+	}
+	return i.ImageSummary.ID
+}
+
+func (i imageReporter) Created() string {
+	return units.HumanDuration(time.Since(time.Unix(i.ImageSummary.Created, 0))) + " ago"
+}
+
+func (i imageReporter) Size() string {
+	s := units.HumanSizeWithPrecision(float64(i.ImageSummary.Size), 3)
+	j := strings.LastIndexFunc(s, unicode.IsNumber)
+	return s[:j+1] + " " + s[j+1:]
+}
+
+func (i imageReporter) History() string {
+	return strings.Join(i.ImageSummary.History, ", ")
+}
diff --git a/cmd/podmanV2/pods/pod.go b/cmd/podmanV2/pods/pod.go
index 3766893bb..81c0d33e1 100644
--- a/cmd/podmanV2/pods/pod.go
+++ b/cmd/podmanV2/pods/pod.go
@@ -1,9 +1,6 @@
 package pods
 
 import (
-	"strings"
-	"text/template"
-
 	"github.com/containers/libpod/cmd/podmanV2/registry"
 	"github.com/containers/libpod/pkg/domain/entities"
 	"github.com/spf13/cobra"
@@ -21,33 +18,6 @@ var (
 	}
 )
 
-var podFuncMap = template.FuncMap{
-	"numCons": func(cons []*entities.ListPodContainer) int {
-		return len(cons)
-	},
-	"podcids": func(cons []*entities.ListPodContainer) string {
-		var ctrids []string
-		for _, c := range cons {
-			ctrids = append(ctrids, c.Id[:12])
-		}
-		return strings.Join(ctrids, ",")
-	},
-	"podconnames": func(cons []*entities.ListPodContainer) string {
-		var ctrNames []string
-		for _, c := range cons {
-			ctrNames = append(ctrNames, c.Names[:12])
-		}
-		return strings.Join(ctrNames, ",")
-	},
-	"podconstatuses": func(cons []*entities.ListPodContainer) string {
-		var statuses []string
-		for _, c := range cons {
-			statuses = append(statuses, c.Status)
-		}
-		return strings.Join(statuses, ",")
-	},
-}
-
 func init() {
 	registry.Commands = append(registry.Commands, registry.CliCommand{
 		Mode:    []entities.EngineMode{entities.ABIMode, entities.TunnelMode},
diff --git a/cmd/podmanV2/pods/ps.go b/cmd/podmanV2/pods/ps.go
index 9875263ac..3dac607df 100644
--- a/cmd/podmanV2/pods/ps.go
+++ b/cmd/podmanV2/pods/ps.go
@@ -9,9 +9,11 @@ import (
 	"strings"
 	"text/tabwriter"
 	"text/template"
+	"time"
+
+	"github.com/docker/go-units"
 
 	"github.com/containers/libpod/cmd/podmanV2/registry"
-	"github.com/containers/libpod/cmd/podmanV2/report"
 	"github.com/containers/libpod/pkg/domain/entities"
 	"github.com/pkg/errors"
 	"github.com/spf13/cobra"
@@ -65,6 +67,7 @@ func pods(cmd *cobra.Command, args []string) error {
 	var (
 		w   io.Writer = os.Stdout
 		row string
+		lpr []ListPodReporter
 	)
 	if cmd.Flag("filter").Changed {
 		for _, f := range strings.Split(inputFilters, ",") {
@@ -88,6 +91,10 @@ func pods(cmd *cobra.Command, args []string) error {
 		fmt.Println(string(b))
 		return nil
 	}
+
+	for _, r := range responses {
+		lpr = append(lpr, ListPodReporter{r})
+	}
 	headers, row := createPodPsOut()
 	if psInput.Quiet {
 		if noTrunc {
@@ -106,15 +113,14 @@ func pods(cmd *cobra.Command, args []string) error {
 	if !psInput.Quiet && !cmd.Flag("format").Changed {
 		format = headers + format
 	}
-	funcs := report.AppendFuncMap(podFuncMap)
-	tmpl, err := template.New("listPods").Funcs(funcs).Parse(format)
+	tmpl, err := template.New("listPods").Parse(format)
 	if err != nil {
 		return err
 	}
 	if !psInput.Quiet {
 		w = tabwriter.NewWriter(os.Stdout, 8, 2, 2, ' ', 0)
 	}
-	if err := tmpl.Execute(w, responses); err != nil {
+	if err := tmpl.Execute(w, lpr); err != nil {
 		return err
 	}
 	if flusher, ok := w.(interface{ Flush() error }); ok {
@@ -132,20 +138,19 @@ func createPodPsOut() (string, string) {
 		row += "{{slice .Id 0 12}}"
 	}
 
-	row += "\t{{.Name}}\t{{.Status}}\t{{humanDurationFromTime .Created}}"
+	row += "\t{{.Name}}\t{{.Status}}\t{{.Created}}"
 
-	//rowFormat      string = "{{slice .Id 0 12}}\t{{.Name}}\t{{.Status}}\t{{humanDurationFromTime .Created}}"
 	if psInput.CtrIds {
 		headers += "\tIDS"
-		row += "\t{{podcids .Containers}}"
+		row += "\t{{.ContainerIds}}"
 	}
 	if psInput.CtrNames {
 		headers += "\tNAMES"
-		row += "\t{{podconnames .Containers}}"
+		row += "\t{{.ContainerNames}}"
 	}
 	if psInput.CtrStatus {
 		headers += "\tSTATUS"
-		row += "\t{{podconstatuses .Containers}}"
+		row += "\t{{.ContainerStatuses}}"
 	}
 	if psInput.Namespace {
 		headers += "\tCGROUP\tNAMESPACES"
@@ -153,7 +158,7 @@ func createPodPsOut() (string, string) {
 	}
 	if !psInput.CtrStatus && !psInput.CtrNames && !psInput.CtrIds {
 		headers += "\t# OF CONTAINERS"
-		row += "\t{{numCons .Containers}}"
+		row += "\t{{.NumberOfContainers}}"
 
 	}
 	headers += "\tINFRA ID\n"
@@ -164,3 +169,61 @@ func createPodPsOut() (string, string) {
 	}
 	return headers, row
 }
+
+// ListPodReporter is a struct for pod ps output
+type ListPodReporter struct {
+	*entities.ListPodsReport
+}
+
+// Created returns a human readable created time/date
+func (l ListPodReporter) Created() string {
+	return units.HumanDuration(time.Since(l.ListPodsReport.Created)) + " ago"
+}
+
+// NumberofContainers returns an int representation for
+// the number of containers belonging to the pod
+func (l ListPodReporter) NumberOfContainers() int {
+	return len(l.Containers)
+}
+
+// Added for backwards compatibility with podmanv1
+func (l ListPodReporter) InfraID() string {
+	return l.InfraId()
+}
+
+// InfraId returns the infra container id for the pod
+// depending on trunc
+func (l ListPodReporter) InfraId() string {
+	if noTrunc {
+		return l.ListPodsReport.InfraId
+	}
+	return l.ListPodsReport.InfraId[0:12]
+}
+
+func (l ListPodReporter) ContainerIds() string {
+	var ctrids []string
+	for _, c := range l.Containers {
+		id := c.Id
+		if !noTrunc {
+			id = id[0:12]
+		}
+		ctrids = append(ctrids, id)
+	}
+	return strings.Join(ctrids, ",")
+}
+
+func (l ListPodReporter) ContainerNames() string {
+	var ctrNames []string
+	for _, c := range l.Containers {
+		ctrNames = append(ctrNames, c.Names)
+	}
+	return strings.Join(ctrNames, ",")
+}
+
+func (l ListPodReporter) ContainerStatuses() string {
+	var statuses []string
+	for _, c := range l.Containers {
+		statuses = append(statuses, c.Status)
+	}
+	return strings.Join(statuses, ",")
+}
diff --git a/cmd/podmanV2/report/templates.go b/cmd/podmanV2/report/templates.go
deleted file mode 100644
index e46048e97..000000000
--- a/cmd/podmanV2/report/templates.go
+++ /dev/null
@@ -1,73 +0,0 @@
-package report
-
-import (
-	"strings"
-	"text/template"
-	"time"
-	"unicode"
-
-	"github.com/docker/go-units"
-)
-
-var defaultFuncMap = template.FuncMap{
-	"ellipsis": func(s string, length int) string {
-		if len(s) > length {
-			return s[:length-3] + "..."
-		}
-		return s
-	},
-	"humanDuration": func(t int64) string {
-		return units.HumanDuration(time.Since(time.Unix(t, 0))) + " ago"
-	},
-	"humanDurationFromTime": func(t time.Time) string {
-		return units.HumanDuration(time.Since(t)) + " ago"
-	},
-	"humanSize": func(sz int64) string {
-		s := units.HumanSizeWithPrecision(float64(sz), 3)
-		i := strings.LastIndexFunc(s, unicode.IsNumber)
-		return s[:i+1] + " " + s[i+1:]
-	},
-	"join":  strings.Join,
-	"lower": strings.ToLower,
-	"rfc3339": func(t int64) string {
-		return time.Unix(t, 0).Format(time.RFC3339)
-	},
-	"replace": strings.Replace,
-	"split":   strings.Split,
-	"title":   strings.Title,
-	"upper":   strings.ToUpper,
-	// TODO: Remove after Go 1.14 port
-	"slice": func(s string, i, j int) string {
-		if i > j || len(s) < i {
-			return s
-		}
-		if len(s) < j {
-			return s[i:]
-		}
-		return s[i:j]
-	},
-}
-
-func ReportHeader(columns ...string) []byte {
-	hdr := make([]string, len(columns))
-	for i, h := range columns {
-		hdr[i] = strings.ToUpper(h)
-	}
-	return []byte(strings.Join(hdr, "\t") + "\n")
-}
-
-func AppendFuncMap(funcMap template.FuncMap) template.FuncMap {
-	merged := PodmanTemplateFuncs()
-	for k, v := range funcMap {
-		merged[k] = v
-	}
-	return merged
-}
-
-func PodmanTemplateFuncs() template.FuncMap {
-	merged := make(template.FuncMap)
-	for k, v := range defaultFuncMap {
-		merged[k] = v
-	}
-	return merged
-}