3ac92a7abd
* unit tests for service.go in overlay package added * comments removed * unit tests for overlay package updated * updated code for starting redis server
113 lines
2.5 KiB
Go
113 lines
2.5 KiB
Go
// Copyright (C) 2018 Storj Labs, Inc.
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// See LICENSE for copying information.
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package overlay
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import (
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"context"
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"net/url"
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"strconv"
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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/provider"
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proto "storj.io/storj/protos/overlay"
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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("overlay error")
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)
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// Config is a configuration struct for everything you need to start the
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// Overlay cache responsibility.
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type Config struct {
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DatabaseURL string `help:"the database connection string to use" default:"bolt://$CONFDIR/overlay.db"`
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}
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// Run implements the provider.Responsibility interface. Run assumes a
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// Kademlia responsibility has been started before this one.
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func (c Config) Run(ctx context.Context, server *provider.Provider) (
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err error) {
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defer mon.Task()(&ctx)(&err)
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kad := kademlia.LoadFromContext(ctx)
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if kad == nil {
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return Error.New("programmer error: kademlia responsibility unstarted")
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}
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dburl, err := url.Parse(c.DatabaseURL)
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if err != nil {
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return Error.Wrap(err)
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}
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var cache *Cache
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switch dburl.Scheme {
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case "bolt":
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cache, err = NewBoltOverlayCache(dburl.Path, kad)
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if err != nil {
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return err
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}
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zap.S().Info("Starting overlay cache with BoltDB")
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case "redis":
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db, err := strconv.Atoi(dburl.Query().Get("db"))
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if err != nil {
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return Error.New("invalid db: %s", err)
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}
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cache, err = NewRedisOverlayCache(dburl.Host, urlPwd(dburl), db, kad)
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if err != nil {
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return err
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}
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zap.S().Info("Starting overlay cache with Redis")
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default:
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return Error.New("database scheme not supported: %s", dburl.Scheme)
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}
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err = cache.Bootstrap(ctx)
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if err != nil {
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return err
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}
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go func() {
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// TODO(jt): should there be a for loop here?
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err := cache.Refresh(ctx)
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if err != nil {
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zap.S().Fatal("cache refreshes stopped", zap.Error(err))
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}
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}()
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proto.RegisterOverlayServer(server.GRPC(), &Server{
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dht: kad,
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cache: cache,
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// TODO(jt): do something else
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logger: zap.L(),
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metrics: monkit.Default,
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})
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go func() {
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// TODO(jt): should there be a for loop here?
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// TODO(jt): how is this different from Refresh?
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err := cache.Walk(ctx)
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if err != nil {
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zap.S().Fatal("cache walking stopped", zap.Error(err))
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}
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}()
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return server.Run(ctx)
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}
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func urlPwd(u *url.URL) string {
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if u == nil || u.User == nil {
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return ""
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}
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if pw, ok := u.User.Password(); ok {
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return pw
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}
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return ""
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}
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