/
service.go
252 lines (216 loc) · 6.97 KB
/
service.go
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package convert
import (
"fmt"
"strings"
"github.com/docker/docker/pkg/namesgenerator"
types "github.com/docker/engine-api/types/swarm"
swarmapi "github.com/docker/swarmkit/api"
"github.com/docker/swarmkit/protobuf/ptypes"
)
// ServiceFromGRPC converts a grpc Service to a Service.
func ServiceFromGRPC(s swarmapi.Service) types.Service {
spec := s.Spec
containerConfig := spec.Task.Runtime.(*swarmapi.TaskSpec_Container).Container
networks := make([]types.NetworkAttachmentConfig, 0, len(spec.Networks))
for _, n := range spec.Networks {
networks = append(networks, types.NetworkAttachmentConfig{Target: n.Target, Aliases: n.Aliases})
}
service := types.Service{
ID: s.ID,
Spec: types.ServiceSpec{
TaskTemplate: types.TaskSpec{
ContainerSpec: containerSpecFromGRPC(containerConfig),
Resources: resourcesFromGRPC(s.Spec.Task.Resources),
RestartPolicy: restartPolicyFromGRPC(s.Spec.Task.Restart),
Placement: placementFromGRPC(s.Spec.Task.Placement),
},
Networks: networks,
EndpointSpec: endpointSpecFromGRPC(s.Spec.Endpoint),
},
Endpoint: endpointFromGRPC(s.Endpoint),
}
// Meta
service.Version.Index = s.Meta.Version.Index
service.CreatedAt, _ = ptypes.Timestamp(s.Meta.CreatedAt)
service.UpdatedAt, _ = ptypes.Timestamp(s.Meta.UpdatedAt)
// Annotations
service.Spec.Name = s.Spec.Annotations.Name
service.Spec.Labels = s.Spec.Annotations.Labels
// UpdateConfig
if s.Spec.Update != nil {
service.Spec.UpdateConfig = &types.UpdateConfig{
Parallelism: s.Spec.Update.Parallelism,
}
service.Spec.UpdateConfig.Delay, _ = ptypes.Duration(&s.Spec.Update.Delay)
}
//Mode
switch t := s.Spec.GetMode().(type) {
case *swarmapi.ServiceSpec_Global:
service.Spec.Mode.Global = &types.GlobalService{}
case *swarmapi.ServiceSpec_Replicated:
service.Spec.Mode.Replicated = &types.ReplicatedService{
Replicas: &t.Replicated.Replicas,
}
}
return service
}
// ServiceSpecToGRPC converts a ServiceSpec to a grpc ServiceSpec.
func ServiceSpecToGRPC(s types.ServiceSpec) (swarmapi.ServiceSpec, error) {
name := s.Name
if name == "" {
name = namesgenerator.GetRandomName(0)
}
networks := make([]*swarmapi.ServiceSpec_NetworkAttachmentConfig, 0, len(s.Networks))
for _, n := range s.Networks {
networks = append(networks, &swarmapi.ServiceSpec_NetworkAttachmentConfig{Target: n.Target, Aliases: n.Aliases})
}
spec := swarmapi.ServiceSpec{
Annotations: swarmapi.Annotations{
Name: name,
Labels: s.Labels,
},
Task: swarmapi.TaskSpec{
Resources: resourcesToGRPC(s.TaskTemplate.Resources),
},
Networks: networks,
}
containerSpec, err := containerToGRPC(s.TaskTemplate.ContainerSpec)
if err != nil {
return swarmapi.ServiceSpec{}, err
}
spec.Task.Runtime = &swarmapi.TaskSpec_Container{Container: containerSpec}
restartPolicy, err := restartPolicyToGRPC(s.TaskTemplate.RestartPolicy)
if err != nil {
return swarmapi.ServiceSpec{}, err
}
spec.Task.Restart = restartPolicy
if s.TaskTemplate.Placement != nil {
spec.Task.Placement = &swarmapi.Placement{
Constraints: s.TaskTemplate.Placement.Constraints,
}
}
if s.UpdateConfig != nil {
spec.Update = &swarmapi.UpdateConfig{
Parallelism: s.UpdateConfig.Parallelism,
Delay: *ptypes.DurationProto(s.UpdateConfig.Delay),
}
}
if s.EndpointSpec != nil {
if s.EndpointSpec.Mode != "" &&
s.EndpointSpec.Mode != types.ResolutionModeVIP &&
s.EndpointSpec.Mode != types.ResolutionModeDNSRR {
return swarmapi.ServiceSpec{}, fmt.Errorf("invalid resolution mode: %q", s.EndpointSpec.Mode)
}
spec.Endpoint = &swarmapi.EndpointSpec{}
spec.Endpoint.Mode = swarmapi.EndpointSpec_ResolutionMode(swarmapi.EndpointSpec_ResolutionMode_value[strings.ToUpper(string(s.EndpointSpec.Mode))])
for _, portConfig := range s.EndpointSpec.Ports {
spec.Endpoint.Ports = append(spec.Endpoint.Ports, &swarmapi.PortConfig{
Name: portConfig.Name,
Protocol: swarmapi.PortConfig_Protocol(swarmapi.PortConfig_Protocol_value[strings.ToUpper(string(portConfig.Protocol))]),
TargetPort: portConfig.TargetPort,
PublishedPort: portConfig.PublishedPort,
})
}
}
//Mode
if s.Mode.Global != nil {
spec.Mode = &swarmapi.ServiceSpec_Global{
Global: &swarmapi.GlobalService{},
}
} else if s.Mode.Replicated != nil && s.Mode.Replicated.Replicas != nil {
spec.Mode = &swarmapi.ServiceSpec_Replicated{
Replicated: &swarmapi.ReplicatedService{Replicas: *s.Mode.Replicated.Replicas},
}
} else {
spec.Mode = &swarmapi.ServiceSpec_Replicated{
Replicated: &swarmapi.ReplicatedService{Replicas: 1},
}
}
return spec, nil
}
func resourcesFromGRPC(res *swarmapi.ResourceRequirements) *types.ResourceRequirements {
var resources *types.ResourceRequirements
if res != nil {
resources = &types.ResourceRequirements{}
if res.Limits != nil {
resources.Limits = &types.Resources{
NanoCPUs: res.Limits.NanoCPUs,
MemoryBytes: res.Limits.MemoryBytes,
}
}
if res.Reservations != nil {
resources.Reservations = &types.Resources{
NanoCPUs: res.Reservations.NanoCPUs,
MemoryBytes: res.Reservations.MemoryBytes,
}
}
}
return resources
}
func resourcesToGRPC(res *types.ResourceRequirements) *swarmapi.ResourceRequirements {
var reqs *swarmapi.ResourceRequirements
if res != nil {
reqs = &swarmapi.ResourceRequirements{}
if res.Limits != nil {
reqs.Limits = &swarmapi.Resources{
NanoCPUs: res.Limits.NanoCPUs,
MemoryBytes: res.Limits.MemoryBytes,
}
}
if res.Reservations != nil {
reqs.Reservations = &swarmapi.Resources{
NanoCPUs: res.Reservations.NanoCPUs,
MemoryBytes: res.Reservations.MemoryBytes,
}
}
}
return reqs
}
func restartPolicyFromGRPC(p *swarmapi.RestartPolicy) *types.RestartPolicy {
var rp *types.RestartPolicy
if p != nil {
rp = &types.RestartPolicy{}
rp.Condition = types.RestartPolicyCondition(strings.ToLower(p.Condition.String()))
if p.Delay != nil {
delay, _ := ptypes.Duration(p.Delay)
rp.Delay = &delay
}
if p.Window != nil {
window, _ := ptypes.Duration(p.Window)
rp.Window = &window
}
rp.MaxAttempts = &p.MaxAttempts
}
return rp
}
func restartPolicyToGRPC(p *types.RestartPolicy) (*swarmapi.RestartPolicy, error) {
var rp *swarmapi.RestartPolicy
if p != nil {
rp = &swarmapi.RestartPolicy{}
if condition, ok := swarmapi.RestartPolicy_RestartCondition_value[strings.ToUpper(string(p.Condition))]; ok {
rp.Condition = swarmapi.RestartPolicy_RestartCondition(condition)
} else if string(p.Condition) == "" {
rp.Condition = swarmapi.RestartOnAny
} else {
return nil, fmt.Errorf("invalid RestartCondition: %q", p.Condition)
}
if p.Delay != nil {
rp.Delay = ptypes.DurationProto(*p.Delay)
}
if p.Window != nil {
rp.Window = ptypes.DurationProto(*p.Window)
}
if p.MaxAttempts != nil {
rp.MaxAttempts = *p.MaxAttempts
}
}
return rp, nil
}
func placementFromGRPC(p *swarmapi.Placement) *types.Placement {
var r *types.Placement
if p != nil {
r = &types.Placement{}
r.Constraints = p.Constraints
}
return r
}