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package redis
import (
"context"
"sync"
"github.com/go-redis/redis/v8"
"github.com/spiral/errors"
"github.com/spiral/roadrunner/v2/pkg/pubsub/message"
"github.com/spiral/roadrunner/v2/plugins/config"
"github.com/spiral/roadrunner/v2/plugins/logger"
"github.com/spiral/roadrunner/v2/utils"
)
const PluginName = "redis"
type Plugin struct {
sync.Mutex
// config for RR integration
cfg *Config
// logger
log logger.Logger
// redis universal client
universalClient redis.UniversalClient
fanin *FanIn
}
func (p *Plugin) GetClient() redis.UniversalClient {
return p.universalClient
}
func (p *Plugin) Init(cfg config.Configurer, log logger.Logger) error {
const op = errors.Op("redis_plugin_init")
if !cfg.Has(PluginName) {
return errors.E(op, errors.Disabled)
}
err := cfg.UnmarshalKey(PluginName, &p.cfg)
if err != nil {
return errors.E(op, errors.Disabled, err)
}
p.cfg.InitDefaults()
p.log = log
p.universalClient = redis.NewUniversalClient(&redis.UniversalOptions{
Addrs: p.cfg.Addrs,
DB: p.cfg.DB,
Username: p.cfg.Username,
Password: p.cfg.Password,
SentinelPassword: p.cfg.SentinelPassword,
MaxRetries: p.cfg.MaxRetries,
MinRetryBackoff: p.cfg.MaxRetryBackoff,
MaxRetryBackoff: p.cfg.MaxRetryBackoff,
DialTimeout: p.cfg.DialTimeout,
ReadTimeout: p.cfg.ReadTimeout,
WriteTimeout: p.cfg.WriteTimeout,
PoolSize: p.cfg.PoolSize,
MinIdleConns: p.cfg.MinIdleConns,
MaxConnAge: p.cfg.MaxConnAge,
PoolTimeout: p.cfg.PoolTimeout,
IdleTimeout: p.cfg.IdleTimeout,
IdleCheckFrequency: p.cfg.IdleCheckFreq,
ReadOnly: p.cfg.ReadOnly,
RouteByLatency: p.cfg.RouteByLatency,
RouteRandomly: p.cfg.RouteRandomly,
MasterName: p.cfg.MasterName,
})
// init fanin
p.fanin = NewFanIn(p.universalClient, log)
return nil
}
func (p *Plugin) Serve() chan error {
errCh := make(chan error)
return errCh
}
func (p *Plugin) Stop() error {
const op = errors.Op("redis_plugin_stop")
err := p.fanin.Stop()
if err != nil {
return errors.E(op, err)
}
err = p.universalClient.Close()
if err != nil {
return errors.E(op, err)
}
return nil
}
func (p *Plugin) Name() string {
return PluginName
}
// Available interface implementation
func (p *Plugin) Available() {}
func (p *Plugin) Publish(msg []byte) error {
p.Lock()
defer p.Unlock()
fbsMsg := message.GetRootAsMessage(msg, 0)
for j := 0; j < fbsMsg.TopicsLength(); j++ {
f := p.universalClient.Publish(context.Background(), utils.AsString(fbsMsg.Topics(j)), fbsMsg.Table().Bytes)
if f.Err() != nil {
return f.Err()
}
}
return nil
}
func (p *Plugin) PublishAsync(msg []byte) {
go func() {
p.Lock()
defer p.Unlock()
fbsMsg := message.GetRootAsMessage(msg, 0)
for j := 0; j < fbsMsg.TopicsLength(); j++ {
f := p.universalClient.Publish(context.Background(), utils.AsString(fbsMsg.Topics(j)), fbsMsg.Table().Bytes)
if f.Err() != nil {
p.log.Error("errors publishing message", "topic", fbsMsg.Topics(j), "error", f.Err().Error())
return
}
}
}()
}
func (p *Plugin) Subscribe(topics ...string) error {
return p.fanin.AddChannel(topics...)
}
func (p *Plugin) Unsubscribe(topics ...string) error {
return p.fanin.RemoveChannel(topics...)
}
// Next return next message
func (p *Plugin) Next() (*message.Message, error) {
return <-p.fanin.Consume(), nil
}
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