TUN-5361: Commands for managing virtual networks

vnet/filter.go

@@ -0,0 +1,99 @@
+package vnet
+
+import (
+	"net/url"
+	"strconv"
+
+	"github.com/google/uuid"
+	"github.com/pkg/errors"
+	"github.com/urfave/cli/v2"
+)
+
+var (
+	filterId = cli.StringFlag{
+		Name:  "id",
+		Usage: "List virtual networks with the given `ID`",
+	}
+	filterName = cli.StringFlag{
+		Name:  "name",
+		Usage: "List virtual networks with the given `NAME`",
+	}
+	filterDefault = cli.BoolFlag{
+		Name:  "is-default",
+		Usage: "If true, lists the virtual network that is the default one. If false, lists all non-default virtual networks for the account. If absent, all are included in the results regardless of their default status.",
+	}
+	filterDeleted = cli.BoolFlag{
+		Name:  "show-deleted",
+		Usage: "If false (default), only show non-deleted virtual networks. If true, only show deleted virtual networks.",
+	}
+	FilterFlags = []cli.Flag{
+		&filterId,
+		&filterName,
+		&filterDefault,
+		&filterDeleted,
+	}
+)
+
+// Filter which virtual networks get queried.
+type Filter struct {
+	queryParams url.Values
+}
+
+func NewFilter() *Filter {
+	return &Filter{
+		queryParams: url.Values{},
+	}
+}
+
+func (f *Filter) ById(vnetId uuid.UUID) {
+	f.queryParams.Set("id", vnetId.String())
+}
+
+func (f *Filter) ByName(name string) {
+	f.queryParams.Set("name", name)
+}
+
+func (f *Filter) ByDefaultStatus(isDefault bool) {
+	f.queryParams.Set("is_default", strconv.FormatBool(isDefault))
+}
+
+func (f *Filter) WithDeleted(isDeleted bool) {
+	f.queryParams.Set("is_deleted", strconv.FormatBool(isDeleted))
+}
+
+func (f *Filter) MaxFetchSize(max uint) {
+	f.queryParams.Set("per_page", strconv.Itoa(int(max)))
+}
+
+func (f Filter) Encode() string {
+	return f.queryParams.Encode()
+}
+
+// NewFromCLI parses CLI flags to discover which filters should get applied to list virtual networks.
+func NewFromCLI(c *cli.Context) (*Filter, error) {
+	f := NewFilter()
+
+	if id := c.String("id"); id != "" {
+		vnetId, err := uuid.Parse(id)
+		if err != nil {
+			return nil, errors.Wrapf(err, "%s is not a valid virtual network ID", id)
+		}
+		f.ById(vnetId)
+	}
+
+	if name := c.String("name"); name != "" {
+		f.ByName(name)
+	}
+
+	if c.IsSet("is-default") {
+		f.ByDefaultStatus(c.Bool("is-default"))
+	}
+
+	f.WithDeleted(c.Bool("show-deleted"))
+
+	if maxFetch := c.Int("max-fetch-size"); maxFetch > 0 {
+		f.MaxFetchSize(uint(maxFetch))
+	}
+
+	return f, nil
+}