func (s *DockerServer) serviceCreate(w http.ResponseWriter, r *http.Request) {
var config swarm.ServiceSpec
defer r.Body.Close()
err := json.NewDecoder(r.Body).Decode(&config)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
s.cMut.Lock()
defer s.cMut.Unlock()
s.swarmMut.Lock()
defer s.swarmMut.Unlock()
if len(s.nodes) == 0 || s.swarm == nil {
http.Error(w, "no swarm nodes available", http.StatusNotAcceptable)
return
}
if config.Name == "" {
config.Name = s.generateID()
}
for _, s := range s.services {
if s.Spec.Name == config.Name {
http.Error(w, "there's already a service with this name", http.StatusConflict)
return
}
}
service := swarm.Service{
ID: s.generateID(),
Spec: config,
}
s.addTasks(&service, false)
s.services = append(s.services, &service)
w.WriteHeader(http.StatusOK)
json.NewEncoder(w).Encode(service)
}
func updateService(flags *pflag.FlagSet, spec *swarm.ServiceSpec) error {
updateString := func(flag string, field *string) {
if flags.Changed(flag) {
*field, _ = flags.GetString(flag)
}
}
updateInt64Value := func(flag string, field *int64) {
if flags.Changed(flag) {
*field = flags.Lookup(flag).Value.(int64Value).Value()
}
}
updateDuration := func(flag string, field *time.Duration) {
if flags.Changed(flag) {
*field, _ = flags.GetDuration(flag)
}
}
updateDurationOpt := func(flag string, field **time.Duration) {
if flags.Changed(flag) {
val := *flags.Lookup(flag).Value.(*DurationOpt).Value()
*field = &val
}
}
updateUint64 := func(flag string, field *uint64) {
if flags.Changed(flag) {
*field, _ = flags.GetUint64(flag)
}
}
updateUint64Opt := func(flag string, field **uint64) {
if flags.Changed(flag) {
val := *flags.Lookup(flag).Value.(*Uint64Opt).Value()
*field = &val
}
}
cspec := &spec.TaskTemplate.ContainerSpec
task := &spec.TaskTemplate
taskResources := func() *swarm.ResourceRequirements {
if task.Resources == nil {
task.Resources = &swarm.ResourceRequirements{}
}
return task.Resources
}
updateString(flagName, &spec.Name)
updateLabels(flags, &spec.Labels)
updateContainerLabels(flags, &cspec.Labels)
updateString("image", &cspec.Image)
updateStringToSlice(flags, "args", &cspec.Args)
updateEnvironment(flags, &cspec.Env)
updateString(flagWorkdir, &cspec.Dir)
updateString(flagUser, &cspec.User)
updateMounts(flags, &cspec.Mounts)
if flags.Changed(flagLimitCPU) || flags.Changed(flagLimitMemory) {
taskResources().Limits = &swarm.Resources{}
updateInt64Value(flagLimitCPU, &task.Resources.Limits.NanoCPUs)
updateInt64Value(flagLimitMemory, &task.Resources.Limits.MemoryBytes)
}
if flags.Changed(flagReserveCPU) || flags.Changed(flagReserveMemory) {
taskResources().Reservations = &swarm.Resources{}
updateInt64Value(flagReserveCPU, &task.Resources.Reservations.NanoCPUs)
updateInt64Value(flagReserveMemory, &task.Resources.Reservations.MemoryBytes)
}
updateDurationOpt(flagStopGracePeriod, &cspec.StopGracePeriod)
if anyChanged(flags, flagRestartCondition, flagRestartDelay, flagRestartMaxAttempts, flagRestartWindow) {
if task.RestartPolicy == nil {
task.RestartPolicy = &swarm.RestartPolicy{}
}
if flags.Changed(flagRestartCondition) {
value, _ := flags.GetString(flagRestartCondition)
task.RestartPolicy.Condition = swarm.RestartPolicyCondition(value)
}
updateDurationOpt(flagRestartDelay, &task.RestartPolicy.Delay)
updateUint64Opt(flagRestartMaxAttempts, &task.RestartPolicy.MaxAttempts)
updateDurationOpt(flagRestartWindow, &task.RestartPolicy.Window)
}
if anyChanged(flags, flagConstraintAdd, flagConstraintRemove) {
if task.Placement == nil {
task.Placement = &swarm.Placement{}
}
updatePlacement(flags, task.Placement)
}
if err := updateReplicas(flags, &spec.Mode); err != nil {
return err
}
if anyChanged(flags, flagUpdateParallelism, flagUpdateDelay, flagUpdateFailureAction) {
if spec.UpdateConfig == nil {
spec.UpdateConfig = &swarm.UpdateConfig{}
}
updateUint64(flagUpdateParallelism, &spec.UpdateConfig.Parallelism)
updateDuration(flagUpdateDelay, &spec.UpdateConfig.Delay)
updateString(flagUpdateFailureAction, &spec.UpdateConfig.FailureAction)
}
if flags.Changed(flagEndpointMode) {
value, _ := flags.GetString(flagEndpointMode)
if spec.EndpointSpec == nil {
spec.EndpointSpec = &swarm.EndpointSpec{}
}
spec.EndpointSpec.Mode = swarm.ResolutionMode(value)
}
if anyChanged(flags, flagGroupAdd, flagGroupRemove) {
if err := updateGroups(flags, &cspec.Groups); err != nil {
return err
}
}
if anyChanged(flags, flagPublishAdd, flagPublishRemove) {
if spec.EndpointSpec == nil {
spec.EndpointSpec = &swarm.EndpointSpec{}
}
if err := updatePorts(flags, &spec.EndpointSpec.Ports); err != nil {
return err
}
}
if err := updateLogDriver(flags, &spec.TaskTemplate); err != nil {
return err
}
return nil
}
