From b22254dc8bfdea5153761e93298182286f874bac Mon Sep 17 00:00:00 2001
From: Brent Baude <bbaude@redhat.com>
Date: Sat, 4 Apr 2020 13:59:55 -0500
Subject: podmanv2 ps

add the ability to list containers

Signed-off-by: Brent Baude <bbaude@redhat.com>
---
 libpod/filters/pods.go | 115 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 115 insertions(+)
 create mode 100644 libpod/filters/pods.go

(limited to 'libpod/filters/pods.go')

diff --git a/libpod/filters/pods.go b/libpod/filters/pods.go
new file mode 100644
index 000000000..9bf436eab
--- /dev/null
+++ b/libpod/filters/pods.go
@@ -0,0 +1,115 @@
+package lpfilters
+
+import (
+	"strconv"
+	"strings"
+
+	"github.com/containers/libpod/libpod"
+	"github.com/containers/libpod/libpod/define"
+	"github.com/containers/libpod/pkg/util"
+	"github.com/pkg/errors"
+)
+
+// GeneratePodFilterFunc takes a filter and filtervalue (key, value)
+// and generates a libpod function that can be used to filter
+// pods
+func GeneratePodFilterFunc(filter, filterValue string) (
+	func(pod *libpod.Pod) bool, error) {
+	switch filter {
+	case "ctr-ids":
+		return func(p *libpod.Pod) bool {
+			ctrIds, err := p.AllContainersByID()
+			if err != nil {
+				return false
+			}
+			return util.StringInSlice(filterValue, ctrIds)
+		}, nil
+	case "ctr-names":
+		return func(p *libpod.Pod) bool {
+			ctrs, err := p.AllContainers()
+			if err != nil {
+				return false
+			}
+			for _, ctr := range ctrs {
+				if filterValue == ctr.Name() {
+					return true
+				}
+			}
+			return false
+		}, nil
+	case "ctr-number":
+		return func(p *libpod.Pod) bool {
+			ctrIds, err := p.AllContainersByID()
+			if err != nil {
+				return false
+			}
+
+			fVint, err2 := strconv.Atoi(filterValue)
+			if err2 != nil {
+				return false
+			}
+			return len(ctrIds) == fVint
+		}, nil
+	case "ctr-status":
+		if !util.StringInSlice(filterValue,
+			[]string{"created", "restarting", "running", "paused",
+				"exited", "unknown"}) {
+			return nil, errors.Errorf("%s is not a valid status", filterValue)
+		}
+		return func(p *libpod.Pod) bool {
+			ctr_statuses, err := p.Status()
+			if err != nil {
+				return false
+			}
+			for _, ctr_status := range ctr_statuses {
+				state := ctr_status.String()
+				if ctr_status == define.ContainerStateConfigured {
+					state = "created"
+				}
+				if state == filterValue {
+					return true
+				}
+			}
+			return false
+		}, nil
+	case "id":
+		return func(p *libpod.Pod) bool {
+			return strings.Contains(p.ID(), filterValue)
+		}, nil
+	case "name":
+		return func(p *libpod.Pod) bool {
+			return strings.Contains(p.Name(), filterValue)
+		}, nil
+	case "status":
+		if !util.StringInSlice(filterValue, []string{"stopped", "running", "paused", "exited", "dead", "created"}) {
+			return nil, errors.Errorf("%s is not a valid pod status", filterValue)
+		}
+		return func(p *libpod.Pod) bool {
+			status, err := p.GetPodStatus()
+			if err != nil {
+				return false
+			}
+			if strings.ToLower(status) == filterValue {
+				return true
+			}
+			return false
+		}, nil
+	case "label":
+		var filterArray = strings.SplitN(filterValue, "=", 2)
+		var filterKey = filterArray[0]
+		if len(filterArray) > 1 {
+			filterValue = filterArray[1]
+		} else {
+			filterValue = ""
+		}
+		return func(p *libpod.Pod) bool {
+			for labelKey, labelValue := range p.Labels() {
+				if labelKey == filterKey && ("" == filterValue || labelValue == filterValue) {
+					return true
+				}
+			}
+			return false
+		}, nil
+	}
+	return nil, errors.Errorf("%s is an invalid filter", filter)
+}
-- 
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