github.com/containerd/containerd@v22.0.0-20200918172823-438c87b8e050+incompatible/services/leases/service.go (about)

     1  /*
     2     Copyright The containerd Authors.
     3  
     4     Licensed under the Apache License, Version 2.0 (the "License");
     5     you may not use this file except in compliance with the License.
     6     You may obtain a copy of the License at
     7  
     8         http://www.apache.org/licenses/LICENSE-2.0
     9  
    10     Unless required by applicable law or agreed to in writing, software
    11     distributed under the License is distributed on an "AS IS" BASIS,
    12     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13     See the License for the specific language governing permissions and
    14     limitations under the License.
    15  */
    16  
    17  package leases
    18  
    19  import (
    20  	"context"
    21  
    22  	"google.golang.org/grpc"
    23  
    24  	api "github.com/containerd/containerd/api/services/leases/v1"
    25  	"github.com/containerd/containerd/errdefs"
    26  	"github.com/containerd/containerd/leases"
    27  	"github.com/containerd/containerd/plugin"
    28  	"github.com/containerd/containerd/services"
    29  	ptypes "github.com/gogo/protobuf/types"
    30  	"github.com/pkg/errors"
    31  )
    32  
    33  func init() {
    34  	plugin.Register(&plugin.Registration{
    35  		Type: plugin.GRPCPlugin,
    36  		ID:   "leases",
    37  		Requires: []plugin.Type{
    38  			plugin.ServicePlugin,
    39  		},
    40  		InitFn: func(ic *plugin.InitContext) (interface{}, error) {
    41  			plugins, err := ic.GetByType(plugin.ServicePlugin)
    42  			if err != nil {
    43  				return nil, err
    44  			}
    45  			p, ok := plugins[services.LeasesService]
    46  			if !ok {
    47  				return nil, errors.New("leases service not found")
    48  			}
    49  			i, err := p.Instance()
    50  			if err != nil {
    51  				return nil, err
    52  			}
    53  			return &service{lm: i.(leases.Manager)}, nil
    54  		},
    55  	})
    56  }
    57  
    58  type service struct {
    59  	lm leases.Manager
    60  }
    61  
    62  func (s *service) Register(server *grpc.Server) error {
    63  	api.RegisterLeasesServer(server, s)
    64  	return nil
    65  }
    66  
    67  func (s *service) Create(ctx context.Context, r *api.CreateRequest) (*api.CreateResponse, error) {
    68  	opts := []leases.Opt{
    69  		leases.WithLabels(r.Labels),
    70  	}
    71  	if r.ID == "" {
    72  		opts = append(opts, leases.WithRandomID())
    73  	} else {
    74  		opts = append(opts, leases.WithID(r.ID))
    75  	}
    76  
    77  	l, err := s.lm.Create(ctx, opts...)
    78  	if err != nil {
    79  		return nil, errdefs.ToGRPC(err)
    80  	}
    81  
    82  	return &api.CreateResponse{
    83  		Lease: leaseToGRPC(l),
    84  	}, nil
    85  }
    86  
    87  func (s *service) Delete(ctx context.Context, r *api.DeleteRequest) (*ptypes.Empty, error) {
    88  	var opts []leases.DeleteOpt
    89  	if r.Sync {
    90  		opts = append(opts, leases.SynchronousDelete)
    91  	}
    92  	if err := s.lm.Delete(ctx, leases.Lease{
    93  		ID: r.ID,
    94  	}, opts...); err != nil {
    95  		return nil, errdefs.ToGRPC(err)
    96  	}
    97  	return &ptypes.Empty{}, nil
    98  }
    99  
   100  func (s *service) List(ctx context.Context, r *api.ListRequest) (*api.ListResponse, error) {
   101  	l, err := s.lm.List(ctx, r.Filters...)
   102  	if err != nil {
   103  		return nil, errdefs.ToGRPC(err)
   104  	}
   105  
   106  	apileases := make([]*api.Lease, len(l))
   107  	for i := range l {
   108  		apileases[i] = leaseToGRPC(l[i])
   109  	}
   110  
   111  	return &api.ListResponse{
   112  		Leases: apileases,
   113  	}, nil
   114  }
   115  
   116  func (s *service) AddResource(ctx context.Context, r *api.AddResourceRequest) (*ptypes.Empty, error) {
   117  	lease := leases.Lease{
   118  		ID: r.ID,
   119  	}
   120  
   121  	if err := s.lm.AddResource(ctx, lease, leases.Resource{
   122  		ID:   r.Resource.ID,
   123  		Type: r.Resource.Type,
   124  	}); err != nil {
   125  		return nil, errdefs.ToGRPC(err)
   126  	}
   127  	return &ptypes.Empty{}, nil
   128  }
   129  
   130  func (s *service) DeleteResource(ctx context.Context, r *api.DeleteResourceRequest) (*ptypes.Empty, error) {
   131  	lease := leases.Lease{
   132  		ID: r.ID,
   133  	}
   134  
   135  	if err := s.lm.DeleteResource(ctx, lease, leases.Resource{
   136  		ID:   r.Resource.ID,
   137  		Type: r.Resource.Type,
   138  	}); err != nil {
   139  		return nil, errdefs.ToGRPC(err)
   140  	}
   141  	return &ptypes.Empty{}, nil
   142  }
   143  
   144  func (s *service) ListResources(ctx context.Context, r *api.ListResourcesRequest) (*api.ListResourcesResponse, error) {
   145  	lease := leases.Lease{
   146  		ID: r.ID,
   147  	}
   148  
   149  	rs, err := s.lm.ListResources(ctx, lease)
   150  	if err != nil {
   151  		return nil, errdefs.ToGRPC(err)
   152  	}
   153  
   154  	apiResources := make([]api.Resource, 0, len(rs))
   155  	for _, i := range rs {
   156  		apiResources = append(apiResources, api.Resource{
   157  			ID:   i.ID,
   158  			Type: i.Type,
   159  		})
   160  	}
   161  	return &api.ListResourcesResponse{
   162  		Resources: apiResources,
   163  	}, nil
   164  }
   165  
   166  func leaseToGRPC(l leases.Lease) *api.Lease {
   167  	return &api.Lease{
   168  		ID:        l.ID,
   169  		Labels:    l.Labels,
   170  		CreatedAt: l.CreatedAt,
   171  	}
   172  }