mirror of
https://github.com/psviderski/uncloud.git
synced 2026-10-06 21:29:02 +00:00
73 lines
2.5 KiB
Go
73 lines
2.5 KiB
Go
package dns
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import (
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"context"
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"errors"
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"fmt"
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"github.com/miekg/dns"
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"github.com/psviderski/uncloud/api/pb"
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"github.com/psviderski/uncloud/internal/cli"
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"github.com/psviderski/uncloud/internal/cli/tui"
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"github.com/psviderski/uncloud/internal/grpcversion"
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"github.com/spf13/cobra"
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"google.golang.org/grpc/codes"
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"google.golang.org/grpc/metadata"
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"google.golang.org/grpc/status"
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)
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func NewSetCommand() *cobra.Command {
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cmd := &cobra.Command{
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Use: "set DOMAIN_NAME",
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Args: cobra.ExactArgs(1),
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Short: "Set or unset an externally managed cluster domain (EXPERIMENTAL).",
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Long: "EXPERIMENTAL: Set the cluster domain used to generate ingress hostnames for services.\n" +
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"Configure wildcard DNS records for this domain with your DNS provider. " +
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"Uncloud will not create, verify, update, or delete external DNS records.\n" +
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"Pass an empty string to unset a manually set domain. " +
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"Use 'uc dns release' to release a domain reserved in Uncloud DNS. " +
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"Setting or unsetting the domain does not change existing service hostnames.",
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Example: " uc dns set apps.example.com\n uc dns set \"\"",
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RunE: func(cmd *cobra.Command, args []string) error {
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uncli := cmd.Context().Value("cli").(*cli.CLI)
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return set(cmd.Context(), uncli, args[0])
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},
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}
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return cmd
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}
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func set(ctx context.Context, uncli *cli.CLI, name string) error {
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if name != "" {
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if labels, ok := dns.IsDomainName(name); !ok || labels < 2 {
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return fmt.Errorf("invalid cluster domain %q: must be a valid domain name with at least two labels", name)
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}
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}
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tui.PrintWarning("Setting an externally managed cluster domain is experimental.")
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clusterClient, err := uncli.ConnectCluster(ctx)
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if err != nil {
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return fmt.Errorf("connect to cluster: %w", err)
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}
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defer clusterClient.Close()
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ctx = metadata.AppendToOutgoingContext(ctx, grpcversion.MetadataKeyMinServerVersion, "0.21.0")
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_, err = clusterClient.SetDomain(ctx, &pb.SetDomainRequest{Name: name})
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if err != nil {
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if status.Convert(err).Code() == codes.AlreadyExists {
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return errors.New("cluster domain already configured, unset it with 'uc dns set \"\"' or " +
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"release a reservation with 'uc dns release' first")
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}
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return fmt.Errorf("set cluster domain: %w", err)
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}
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if name == "" {
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fmt.Println("Unset cluster domain. External DNS records have not been changed.")
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return nil
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}
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fmt.Printf("Set cluster domain: %s\n", name)
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fmt.Println("DNS is managed externally. " +
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"Configure wildcard DNS records pointing to machines running the Caddy service.")
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return nil
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}
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