github.com/fabiokung/docker@v0.11.2-0.20170222101415-4534dcd49497/daemon/cluster/convert/swarm.go (about)

     1  package convert
     2  
     3  import (
     4  	"fmt"
     5  	"strings"
     6  	"time"
     7  
     8  	types "github.com/docker/docker/api/types/swarm"
     9  	swarmapi "github.com/docker/swarmkit/api"
    10  	gogotypes "github.com/gogo/protobuf/types"
    11  )
    12  
    13  // SwarmFromGRPC converts a grpc Cluster to a Swarm.
    14  func SwarmFromGRPC(c swarmapi.Cluster) types.Swarm {
    15  	swarm := types.Swarm{
    16  		ClusterInfo: types.ClusterInfo{
    17  			ID: c.ID,
    18  			Spec: types.Spec{
    19  				Orchestration: types.OrchestrationConfig{
    20  					TaskHistoryRetentionLimit: &c.Spec.Orchestration.TaskHistoryRetentionLimit,
    21  				},
    22  				Raft: types.RaftConfig{
    23  					SnapshotInterval:           c.Spec.Raft.SnapshotInterval,
    24  					KeepOldSnapshots:           &c.Spec.Raft.KeepOldSnapshots,
    25  					LogEntriesForSlowFollowers: c.Spec.Raft.LogEntriesForSlowFollowers,
    26  					HeartbeatTick:              int(c.Spec.Raft.HeartbeatTick),
    27  					ElectionTick:               int(c.Spec.Raft.ElectionTick),
    28  				},
    29  				EncryptionConfig: types.EncryptionConfig{
    30  					AutoLockManagers: c.Spec.EncryptionConfig.AutoLockManagers,
    31  				},
    32  			},
    33  		},
    34  		JoinTokens: types.JoinTokens{
    35  			Worker:  c.RootCA.JoinTokens.Worker,
    36  			Manager: c.RootCA.JoinTokens.Manager,
    37  		},
    38  	}
    39  
    40  	heartbeatPeriod, _ := gogotypes.DurationFromProto(c.Spec.Dispatcher.HeartbeatPeriod)
    41  	swarm.Spec.Dispatcher.HeartbeatPeriod = heartbeatPeriod
    42  
    43  	swarm.Spec.CAConfig.NodeCertExpiry, _ = gogotypes.DurationFromProto(c.Spec.CAConfig.NodeCertExpiry)
    44  
    45  	for _, ca := range c.Spec.CAConfig.ExternalCAs {
    46  		swarm.Spec.CAConfig.ExternalCAs = append(swarm.Spec.CAConfig.ExternalCAs, &types.ExternalCA{
    47  			Protocol: types.ExternalCAProtocol(strings.ToLower(ca.Protocol.String())),
    48  			URL:      ca.URL,
    49  			Options:  ca.Options,
    50  		})
    51  	}
    52  
    53  	// Meta
    54  	swarm.Version.Index = c.Meta.Version.Index
    55  	swarm.CreatedAt, _ = gogotypes.TimestampFromProto(c.Meta.CreatedAt)
    56  	swarm.UpdatedAt, _ = gogotypes.TimestampFromProto(c.Meta.UpdatedAt)
    57  
    58  	// Annotations
    59  	swarm.Spec.Annotations = annotationsFromGRPC(c.Spec.Annotations)
    60  
    61  	return swarm
    62  }
    63  
    64  // SwarmSpecToGRPC converts a Spec to a grpc ClusterSpec.
    65  func SwarmSpecToGRPC(s types.Spec) (swarmapi.ClusterSpec, error) {
    66  	return MergeSwarmSpecToGRPC(s, swarmapi.ClusterSpec{})
    67  }
    68  
    69  // MergeSwarmSpecToGRPC merges a Spec with an initial grpc ClusterSpec
    70  func MergeSwarmSpecToGRPC(s types.Spec, spec swarmapi.ClusterSpec) (swarmapi.ClusterSpec, error) {
    71  	// We take the initSpec (either created from scratch, or returned by swarmkit),
    72  	// and will only change the value if the one taken from types.Spec is not nil or 0.
    73  	// In other words, if the value taken from types.Spec is nil or 0, we will maintain the status quo.
    74  	if s.Annotations.Name != "" {
    75  		spec.Annotations.Name = s.Annotations.Name
    76  	}
    77  	if len(s.Annotations.Labels) != 0 {
    78  		spec.Annotations.Labels = s.Annotations.Labels
    79  	}
    80  
    81  	if s.Orchestration.TaskHistoryRetentionLimit != nil {
    82  		spec.Orchestration.TaskHistoryRetentionLimit = *s.Orchestration.TaskHistoryRetentionLimit
    83  	}
    84  	if s.Raft.SnapshotInterval != 0 {
    85  		spec.Raft.SnapshotInterval = s.Raft.SnapshotInterval
    86  	}
    87  	if s.Raft.KeepOldSnapshots != nil {
    88  		spec.Raft.KeepOldSnapshots = *s.Raft.KeepOldSnapshots
    89  	}
    90  	if s.Raft.LogEntriesForSlowFollowers != 0 {
    91  		spec.Raft.LogEntriesForSlowFollowers = s.Raft.LogEntriesForSlowFollowers
    92  	}
    93  	if s.Raft.HeartbeatTick != 0 {
    94  		spec.Raft.HeartbeatTick = uint32(s.Raft.HeartbeatTick)
    95  	}
    96  	if s.Raft.ElectionTick != 0 {
    97  		spec.Raft.ElectionTick = uint32(s.Raft.ElectionTick)
    98  	}
    99  	if s.Dispatcher.HeartbeatPeriod != 0 {
   100  		spec.Dispatcher.HeartbeatPeriod = gogotypes.DurationProto(time.Duration(s.Dispatcher.HeartbeatPeriod))
   101  	}
   102  	if s.CAConfig.NodeCertExpiry != 0 {
   103  		spec.CAConfig.NodeCertExpiry = gogotypes.DurationProto(s.CAConfig.NodeCertExpiry)
   104  	}
   105  
   106  	for _, ca := range s.CAConfig.ExternalCAs {
   107  		protocol, ok := swarmapi.ExternalCA_CAProtocol_value[strings.ToUpper(string(ca.Protocol))]
   108  		if !ok {
   109  			return swarmapi.ClusterSpec{}, fmt.Errorf("invalid protocol: %q", ca.Protocol)
   110  		}
   111  		spec.CAConfig.ExternalCAs = append(spec.CAConfig.ExternalCAs, &swarmapi.ExternalCA{
   112  			Protocol: swarmapi.ExternalCA_CAProtocol(protocol),
   113  			URL:      ca.URL,
   114  			Options:  ca.Options,
   115  		})
   116  	}
   117  
   118  	spec.EncryptionConfig.AutoLockManagers = s.EncryptionConfig.AutoLockManagers
   119  
   120  	return spec, nil
   121  }