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service.go
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service.go
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package version
import (
"context"
"github.com/containerd/containerd"
"github.com/ehazlett/stellar"
api "github.com/ehazlett/stellar/api/services/version/v1"
"github.com/ehazlett/stellar/version"
"github.com/gogo/protobuf/types"
"google.golang.org/grpc"
)
const (
serviceID = "stellar.services.version.v1"
)
type service struct {
containerdAddr string
namespace string
}
func New(containerdAddr, namespace string) (*service, error) {
return &service{
containerdAddr: containerdAddr,
namespace: namespace,
}, nil
}
func (s *service) Register(server *grpc.Server) error {
api.RegisterVersionServer(server, s)
return nil
}
func (s *service) ID() string {
return serviceID
}
func (s *service) Start() error {
return nil
}
func (s *service) Stop() error {
return nil
}
func (s *service) containerd() (*containerd.Client, error) {
return stellar.DefaultContainerd(s.containerdAddr, s.namespace)
}
func (s *service) containerdVersion(ctx context.Context) (containerd.Version, error) {
c, err := s.containerd()
if err != nil {
return containerd.Version{}, err
}
defer c.Close()
return c.Version(ctx)
}
func (s *service) Version(ctx context.Context, _ *types.Empty) (*api.VersionResponse, error) {
v, err := s.containerdVersion(ctx)
if err != nil {
return nil, err
}
return &api.VersionResponse{
Version: version.Version,
Revision: version.GitCommit,
ContainerdVersion: v.Version,
ContainerdRevision: v.Revision,
}, nil
}