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kms_launch.go
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kms_launch.go
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// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
package mgmt
import (
"context"
"errors"
"log"
"net"
"github.com/siderolabs/kms-client/api/kms"
"github.com/siderolabs/kms-client/pkg/server"
"github.com/spf13/cobra"
"golang.org/x/sync/errgroup"
"google.golang.org/grpc"
grpclog "github.com/siderolabs/talos/pkg/grpc/middleware/log"
)
var kmsLaunchCmdFlags struct {
addr string
key []byte
}
// kmsLaunchCmd represents the kms-launch command.
var kmsLaunchCmd = &cobra.Command{
Use: "kms-launch",
Short: "Internal command used by QEMU provisioner",
Long: ``,
Args: cobra.NoArgs,
Hidden: true,
RunE: func(cmd *cobra.Command, args []string) error {
if kmsLaunchCmdFlags.key == nil {
return errors.New("no key provided to the KMS server")
}
srv := server.NewServer(func(_ context.Context, nodeUUID string) ([]byte, error) {
return kmsLaunchCmdFlags.key, nil
})
lis, err := net.Listen("tcp", kmsLaunchCmdFlags.addr)
if err != nil {
return err
}
log.Printf("starting KMS server on %s", kmsLaunchCmdFlags.addr)
logMiddleware := grpclog.NewMiddleware(log.New(log.Writer(), "", log.Flags()))
s := grpc.NewServer(
grpc.UnaryInterceptor(logMiddleware.UnaryInterceptor()),
grpc.StreamInterceptor(logMiddleware.StreamInterceptor()),
)
kms.RegisterKMSServiceServer(s, srv)
eg, ctx := errgroup.WithContext(cmd.Context())
eg.Go(func() error {
err := s.Serve(lis)
if errors.Is(err, context.Canceled) {
return nil
}
return err
})
eg.Go(func() error {
<-ctx.Done()
s.Stop()
return nil
})
return s.Serve(lis)
},
}
func init() {
kmsLaunchCmd.Flags().StringVar(&kmsLaunchCmdFlags.addr, "kms-addr", "localhost", "KMS listen address (IP or host)")
kmsLaunchCmd.Flags().BytesBase64Var(&kmsLaunchCmdFlags.key, "kms-key", nil, "KMS key to use")
addCommand(kmsLaunchCmd)
}