73 lines
1.6 KiB
Go
73 lines
1.6 KiB
Go
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// Copyright (C) 2018 Storj Labs, Inc.
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// See LICENSE for copying information.
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package discovery
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import (
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"context"
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"time"
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"github.com/zeebo/errs"
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"go.uber.org/zap"
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monkit "gopkg.in/spacemonkeygo/monkit.v2"
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"storj.io/storj/pkg/kademlia"
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"storj.io/storj/pkg/overlay"
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"storj.io/storj/pkg/pb"
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"storj.io/storj/pkg/provider"
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"storj.io/storj/pkg/statdb"
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)
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var (
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mon = monkit.Package()
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// Error represents an overlay error
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Error = errs.Class("discovery error")
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)
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// CtxKey used for assigning a key to Discovery server
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type CtxKey int
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const (
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ctxKeyDiscovery CtxKey = iota
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)
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// Config loads on the configuration values from run flags
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type Config struct {
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RefreshInterval time.Duration `help:"the interval at which the cache refreshes itself in seconds" default:"1s"`
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}
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// Run runs the Discovery boot up and initialization
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func (c Config) Run(ctx context.Context, server *provider.Provider) (err error) {
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defer mon.Task()(&ctx)(&err)
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srv := NewServer(zap.L())
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pb.RegisterDiscoveryServer(server.GRPC(), srv)
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ol := overlay.LoadFromContext(ctx)
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kad := kademlia.LoadFromContext(ctx)
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stat := statdb.LoadFromContext(ctx)
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discovery := NewDiscovery(ol, kad, stat)
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zap.L().Debug("Starting discovery")
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ticker := time.NewTicker(c.RefreshInterval)
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defer ticker.Stop()
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go func() {
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for {
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select {
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case <-ticker.C:
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zap.L().Debug("Kicking off refresh")
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err := discovery.Refresh(ctx)
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if err != nil {
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zap.L().Error("Error with cache refresh: ", zap.Error(err))
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}
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case <-ctx.Done():
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return
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}
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}
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}()
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return server.Run(context.WithValue(ctx, ctxKeyDiscovery, discovery))
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}
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