CERTIFICATE NAME                                         TYPE     STATUS           VALID CERT     SERIAL NUMBER                        NOT AFTER                NOT BEFORE
spiffe://cluster.local/ns/istio-system/sa/istiod         Leaf     Available        true           e5dfb59150b2ba7f108d93dcec5aa613     2033-03-22T13:04:57Z     2023-03-21T13:02:57Z

func GetFd(f fs.File) (uintptr, error) {
	if fdable, ok := f.(interface{ Fd() uintptr }); ok {
		return fdable.Fd(), nil
	}

	return 0, fmt.Errorf("unable to get fd")
}

/// mostly copy pasted from spire below:

// regexes listed here have to exclusively match a cgroup path
// the regexes must include two named groups "poduid" and "containerid"

RESOURCE NAME     TYPE           STATUS     VALID CERT     SERIAL NUMBER                        NOT AFTER                NOT BEFORE
default           Cert Chain     ACTIVE     false          6fbee254c22900615cb1f74e3d2f1713     2023-05-16T01:32:52Z     2023-05-15T01:30:52Z

		err = w.printSecretItemsTabular(secrets)
	}
	return err
}

var (
	secretItemColumns = []string{"RESOURCE NAME", "TYPE", "STATUS", "VALID CERT", "SERIAL NUMBER", "NOT AFTER", "NOT BEFORE"}
	secretDiffColumns = []string{"RESOURCE NAME", "TYPE", "VALID CERT", "NODE AGENT", "PROXY", "SERIAL NUMBER", "NOT AFTER", "NOT BEFORE"}
)

// printSecretItemsTabular prints the secret in table format

	Identity  string  `json:"identity"`
	State     string  `json:"state"`
	CertChain []*Cert `json:"cert_chain"`
}

type Cert struct {
	Pem            string `json:"pem"`
	SerialNumber   string `json:"serial_number"`
	ValidFrom      string `json:"valid_from"`
	ExpirationTime string `json:"expiration_time"`

	SecretMeta
}

// SecretMeta holds selected fields which can be extracted from parsed x509 cert
type SecretMeta struct {
	Valid        bool   `json:"cert_valid"`
	SerialNumber string `json:"serial_number"`
	NotAfter     string `json:"not_after"`
	NotBefore    string `json:"not_before"`
	Type         string `json:"type"`
}

// NewSecretItemBuilder returns a new builder to create a secret item

	}

	expectedUID := "863b91d4-4b68-4efa-917f-4b560e3e86aa"
	if podUIDNetns[expectedUID] == (WorkloadInfo{}) {
		t.Fatal("expected to find pod netns under pod uid")
	}
}

// copied and modified from spire

func TestGetContainerIDFromCGroups(t *testing.T) {
	makeCGroups := func(groupPaths []string) []Cgroup {
		var out []Cgroup
		for _, groupPath := range groupPaths {
			out = append(out, Cgroup{

					Destination: "destination",
					SecretMeta: SecretMeta{
						Valid:        true,
						SerialNumber: "serial_number",
						NotAfter:     "expires",
						NotBefore:    "valid",
						Type:         "type",
					},
				},
			},
			expected: append(
				[]string{"olinger", "serial_number", "expires", "valid", "type"},
				secretItemColumns...),
			unexpected: []string{"source", "destination", "certdata"},
		},

route/inbound-vip|8000|http|httpbin.default.svc.cluster.local     inbound|http|8000     *           /*        

RESOURCE NAME      TYPE           STATUS     VALID CERT     SERIAL NUMBER                        NOT AFTER                NOT BEFORE
secret/default     Cert Chain     ACTIVE     false          6fbee254c22900615cb1f74e3d2f1713     2023-05-16T01:32:52Z     2023-05-15T01:30:52Z