79 lines
1.8 KiB
Go
79 lines
1.8 KiB
Go
// Copyright (C) 2018 Storj Labs, Inc.
|
|
// See LICENSE for copying information.
|
|
|
|
package discovery
|
|
|
|
import (
|
|
"context"
|
|
"time"
|
|
|
|
"github.com/zeebo/errs"
|
|
"go.uber.org/zap"
|
|
monkit "gopkg.in/spacemonkeygo/monkit.v2"
|
|
|
|
"storj.io/storj/pkg/kademlia"
|
|
"storj.io/storj/pkg/overlay"
|
|
"storj.io/storj/pkg/provider"
|
|
"storj.io/storj/pkg/statdb"
|
|
)
|
|
|
|
var (
|
|
mon = monkit.Package()
|
|
// Error represents an overlay error
|
|
Error = errs.Class("discovery error")
|
|
)
|
|
|
|
// Config loads on the configuration values from run flags
|
|
type Config struct {
|
|
RefreshInterval time.Duration `help:"the interval at which the cache refreshes itself in seconds" default:"1s"`
|
|
}
|
|
|
|
// Run runs the Discovery boot up and initialization
|
|
func (c Config) Run(ctx context.Context, server *provider.Provider) (err error) {
|
|
defer mon.Task()(&ctx)(&err)
|
|
|
|
overlay := overlay.LoadFromContext(ctx)
|
|
if overlay == nil {
|
|
return Error.New("programmer error: overlay responsibility unstarted")
|
|
}
|
|
kad := kademlia.LoadFromContext(ctx)
|
|
if kad == nil {
|
|
return Error.New("programmer error: kademlia responsibility unstarted")
|
|
}
|
|
stat, ok := ctx.Value("masterdb").(interface {
|
|
StatDB() statdb.DB
|
|
})
|
|
|
|
if !ok {
|
|
return Error.New("unable to get master db instance")
|
|
}
|
|
|
|
discovery := NewDiscovery(zap.L().Named("discovery"), overlay, kad, stat.StatDB())
|
|
|
|
zap.L().Debug("Starting discovery")
|
|
|
|
ticker := time.NewTicker(c.RefreshInterval)
|
|
defer ticker.Stop()
|
|
|
|
go func() {
|
|
for {
|
|
select {
|
|
case <-ticker.C:
|
|
err := discovery.Refresh(ctx)
|
|
if err != nil {
|
|
discovery.log.Error("Error with cache refresh: ", zap.Error(err))
|
|
}
|
|
|
|
err = discovery.Discovery(ctx)
|
|
if err != nil {
|
|
discovery.log.Error("Error with cache discovery: ", zap.Error(err))
|
|
}
|
|
case <-ctx.Done():
|
|
return
|
|
}
|
|
}
|
|
}()
|
|
|
|
return server.Run(ctx)
|
|
}
|