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cmd_spoke.go
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/
cmd_spoke.go
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package spokes
import (
"context"
"github.com/discomco/go-cart/sdk/comps"
"github.com/discomco/go-cart/sdk/schema"
"github.com/hashicorp/go-multierror"
)
type (
CmdSpokeFtor func() ICommandSpoke
CmdSpokeBuilder func() ICommandSpoke
)
type CmdSpoke struct {
*Spoke
projector comps.IProjector
responders []comps.IResponder
listeners []comps.IListener
reactions []comps.IMediatorReaction
}
func (f *CmdSpoke) up(ctx context.Context) error {
errors := multierror.Error{}
for _, handler := range f.reactions {
err := handler.Activate(ctx)
if err != nil {
errors.Errors = append(errors.Errors, err)
}
}
for _, listener := range f.listeners {
err := listener.Activate(ctx)
if err != nil {
errors.Errors = append(errors.Errors, err)
}
}
for _, responder := range f.responders {
err := responder.Activate(ctx)
if err != nil {
errors.Errors = append(errors.Errors, err)
}
}
if f.projector != nil {
err := f.projector.Activate(ctx)
if err != nil {
errors.Errors = append(errors.Errors, err)
}
}
if len(errors.Errors) > 0 {
err := multierror.Flatten(&errors)
return err
}
return nil
}
func (f *CmdSpoke) down(ctx context.Context) {
errors := multierror.Error{}
for _, handler := range f.reactions {
err := handler.Deactivate(ctx)
if err != nil {
errors.Errors = append(errors.Errors, err)
}
}
for _, listener := range f.listeners {
err := listener.Deactivate(ctx)
if err != nil {
errors.Errors = append(errors.Errors, err)
}
}
for _, responder := range f.responders {
err := responder.Deactivate(ctx)
if err != nil {
errors.Errors = append(errors.Errors, err)
}
}
if f.projector != nil {
err := f.projector.Deactivate(ctx)
if err != nil {
errors.Errors = append(errors.Errors, err)
}
}
if len(errors.Errors) > 0 {
err := multierror.Flatten(&errors)
f.GetLogger().Error(err)
}
}
func (f *CmdSpoke) registerPlugins(plugins []comps.ISpokePlugin) {
if len(plugins) == 0 {
return
}
for _, plugin := range plugins {
switch plugin.(type) {
case comps.IMediatorReaction, comps.IEvtReaction:
f.reactions = append(f.reactions, plugin.(comps.IMediatorReaction))
case comps.IResponder:
f.responders = append(f.responders, plugin.(comps.IResponder))
case comps.IListener:
f.listeners = append(f.listeners, plugin.(comps.IListener))
case comps.IProjector:
f.registerProjector(plugin.(comps.IProjector))
}
}
}
func (f *CmdSpoke) registerProjector(projector comps.IProjector) {
f.projector = projector
}
func NewCmdSpoke(name schema.Name) *CmdSpoke {
f := &CmdSpoke{
reactions: make([]comps.IMediatorReaction, 0),
responders: make([]comps.IResponder, 0),
listeners: make([]comps.IListener, 0),
projector: nil,
}
base := NewSpoke(name, f.up, f.down, f.registerPlugins)
f.Spoke = base
return f
}