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package broadcast
import (
"sync"
endure "github.com/spiral/endure/pkg/container"
"github.com/spiral/errors"
websocketsv1 "github.com/spiral/roadrunner/v2/pkg/proto/websockets/v1beta"
"github.com/spiral/roadrunner/v2/pkg/pubsub"
"github.com/spiral/roadrunner/v2/plugins/config"
"github.com/spiral/roadrunner/v2/plugins/logger"
"google.golang.org/protobuf/proto"
)
const PluginName string = "broadcast"
type Plugin struct {
sync.RWMutex
log logger.Logger
// publishers implement Publisher interface
// and able to receive a payload
publishers map[string]pubsub.Publisher
}
func (p *Plugin) Init(cfg config.Configurer, log logger.Logger) error {
const op = errors.Op("broadcast_plugin_init")
if !cfg.Has(PluginName) {
return errors.E(op, errors.Disabled)
}
p.publishers = make(map[string]pubsub.Publisher)
p.log = log
return nil
}
func (p *Plugin) Collects() []interface{} {
return []interface{}{
p.CollectPublishers,
}
}
// CollectPublishers collect all plugins who implement pubsub.Publisher interface
func (p *Plugin) CollectPublishers(name endure.Named, subscriber pubsub.Publisher) {
p.publishers[name.Name()] = subscriber
}
// Publish is an entry point to the websocket PUBSUB
func (p *Plugin) Publish(m []byte) error {
p.Lock()
defer p.Unlock()
const op = errors.Op("broadcast_plugin_publish")
msg := &websocketsv1.Message{}
err := proto.Unmarshal(m, msg)
if err != nil {
return errors.E(op, err)
}
// Get payload
for i := 0; i < len(msg.GetTopics()); i++ {
if len(p.publishers) > 0 {
for j := range p.publishers {
err = p.publishers[j].Publish(m)
if err != nil {
return errors.E(op, err)
}
}
return nil
}
p.log.Warn("no publishers registered")
}
return nil
}
func (p *Plugin) PublishAsync(m []byte) {
go func() {
p.Lock()
defer p.Unlock()
msg := &websocketsv1.Message{}
err := proto.Unmarshal(m, msg)
if err != nil {
p.log.Error("message unmarshal")
}
// Get payload
for i := 0; i < len(msg.GetTopics()); i++ {
if br, ok := p.publishers[msg.GetBroker()]; ok {
err := br.Publish(m)
if err != nil {
p.log.Error("publish async error", "error", err)
}
} else {
p.log.Warn("no such broker", "available", p.publishers, "requested", msg.GetBroker())
}
}
}()
}
func (p *Plugin) GetDriver(key string) pubsub.SubReader {
println(key)
return nil
}
func (p *Plugin) RPC() interface{} {
return &rpc{
plugin: p,
log: p.log,
}
}
func (p *Plugin) Name() string {
return PluginName
}
func (p *Plugin) Available() {}
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