347 lines
8.3 KiB
Go
347 lines
8.3 KiB
Go
package main
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import (
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"context"
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"os"
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"os/signal"
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"syscall"
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"time"
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"github.com/ipfs/ipfs-cluster/config"
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ipfscluster "github.com/ipfs/ipfs-cluster"
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"github.com/ipfs/ipfs-cluster/allocator/ascendalloc"
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"github.com/ipfs/ipfs-cluster/allocator/descendalloc"
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"github.com/ipfs/ipfs-cluster/api/ipfsproxy"
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"github.com/ipfs/ipfs-cluster/api/rest"
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"github.com/ipfs/ipfs-cluster/consensus/crdt"
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"github.com/ipfs/ipfs-cluster/consensus/raft"
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"github.com/ipfs/ipfs-cluster/informer/disk"
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"github.com/ipfs/ipfs-cluster/informer/numpin"
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"github.com/ipfs/ipfs-cluster/ipfsconn/ipfshttp"
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"github.com/ipfs/ipfs-cluster/monitor/pubsubmon"
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"github.com/ipfs/ipfs-cluster/observations"
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"github.com/ipfs/ipfs-cluster/pintracker/maptracker"
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"github.com/ipfs/ipfs-cluster/pintracker/stateless"
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"github.com/ipfs/ipfs-cluster/pstoremgr"
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ds "github.com/ipfs/go-datastore"
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host "github.com/libp2p/go-libp2p-host"
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dht "github.com/libp2p/go-libp2p-kad-dht"
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peer "github.com/libp2p/go-libp2p-peer"
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pubsub "github.com/libp2p/go-libp2p-pubsub"
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ma "github.com/multiformats/go-multiaddr"
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errors "github.com/pkg/errors"
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cli "github.com/urfave/cli"
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)
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func parseBootstraps(flagVal []string) (bootstraps []ma.Multiaddr) {
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for _, a := range flagVal {
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bAddr, err := ma.NewMultiaddr(a)
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checkErr("error parsing bootstrap multiaddress (%s)", err, a)
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bootstraps = append(bootstraps, bAddr)
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}
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return
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}
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// Runs the cluster peer
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func daemon(c *cli.Context) error {
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logger.Info("Initializing. For verbose output run with \"-l debug\". Please wait...")
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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bootstraps := parseBootstraps(c.StringSlice("bootstrap"))
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// Execution lock
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locker.lock()
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defer locker.tryUnlock()
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// Load all the configurations and identity
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cfgMgr, ident, cfgs := makeAndLoadConfigs()
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defer cfgMgr.Shutdown()
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if c.Bool("stats") {
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cfgs.metricsCfg.EnableStats = true
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}
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cfgs = propagateTracingConfig(ident, cfgs, c.Bool("tracing"))
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// Cleanup state if bootstrapping
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raftStaging := false
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if len(bootstraps) > 0 && c.String("consensus") == "raft" {
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raft.CleanupRaft(cfgs.raftCfg)
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raftStaging = true
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}
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if c.Bool("leave") {
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cfgs.clusterCfg.LeaveOnShutdown = true
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}
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cluster, err := createCluster(ctx, c, ident, cfgs, raftStaging)
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checkErr("starting cluster", err)
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// noop if no bootstraps
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// if bootstrapping fails, consensus will never be ready
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// and timeout. So this can happen in background and we
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// avoid worrying about error handling here (since Cluster
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// will realize).
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go bootstrap(ctx, cluster, bootstraps)
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return handleSignals(ctx, cluster)
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}
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// createCluster creates all the necessary things to produce the cluster
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// object and returns it along the datastore so the lifecycle can be handled
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// (the datastore needs to be Closed after shutting down the Cluster).
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func createCluster(
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ctx context.Context,
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c *cli.Context,
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ident *config.Identity,
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cfgs *cfgs,
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raftStaging bool,
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) (*ipfscluster.Cluster, error) {
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host, pubsub, dht, err := ipfscluster.NewClusterHost(ctx, ident, cfgs.clusterCfg)
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checkErr("creating libP2P Host", err)
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peerstoreMgr := pstoremgr.New(host, cfgs.clusterCfg.GetPeerstorePath())
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// Import peers but do not connect. We cannot connect to peers until
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// everything has been created (dht, pubsub, bitswap). Otherwise things
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// fail.
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// Connections will happen as needed during bootstrap, rpc etc.
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peerstoreMgr.ImportPeersFromPeerstore(false)
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api, err := rest.NewAPIWithHost(ctx, cfgs.apiCfg, host)
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checkErr("creating REST API component", err)
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proxy, err := ipfsproxy.New(cfgs.ipfsproxyCfg)
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checkErr("creating IPFS Proxy component", err)
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apis := []ipfscluster.API{api, proxy}
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connector, err := ipfshttp.NewConnector(cfgs.ipfshttpCfg)
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checkErr("creating IPFS Connector component", err)
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tracker := setupPinTracker(
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c.String("pintracker"),
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host,
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cfgs.maptrackerCfg,
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cfgs.statelessTrackerCfg,
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cfgs.clusterCfg.Peername,
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)
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informer, alloc := setupAllocation(
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c.String("alloc"),
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cfgs.diskInfCfg,
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cfgs.numpinInfCfg,
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)
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ipfscluster.ReadyTimeout = cfgs.raftCfg.WaitForLeaderTimeout + 5*time.Second
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err = observations.SetupMetrics(cfgs.metricsCfg)
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checkErr("setting up Metrics", err)
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tracer, err := observations.SetupTracing(cfgs.tracingCfg)
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checkErr("setting up Tracing", err)
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store := setupDatastore(c.String("consensus"), ident, cfgs)
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cons, err := setupConsensus(
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c.String("consensus"),
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host,
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dht,
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pubsub,
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cfgs,
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store,
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raftStaging,
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)
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if err != nil {
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store.Close()
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checkErr("setting up Consensus", err)
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}
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var peersF func(context.Context) ([]peer.ID, error)
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if c.String("consensus") == "raft" {
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peersF = cons.Peers
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}
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mon, err := pubsubmon.New(cfgs.pubsubmonCfg, pubsub, peersF)
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if err != nil {
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store.Close()
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checkErr("setting up PeerMonitor", err)
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}
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return ipfscluster.NewCluster(
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host,
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dht,
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cfgs.clusterCfg,
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store,
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cons,
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apis,
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connector,
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tracker,
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mon,
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alloc,
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informer,
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tracer,
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)
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}
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// bootstrap will bootstrap this peer to one of the bootstrap addresses
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// if there are any.
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func bootstrap(ctx context.Context, cluster *ipfscluster.Cluster, bootstraps []ma.Multiaddr) {
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for _, bstrap := range bootstraps {
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logger.Infof("Bootstrapping to %s", bstrap)
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err := cluster.Join(ctx, bstrap)
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if err != nil {
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logger.Errorf("bootstrap to %s failed: %s", bstrap, err)
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}
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}
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}
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func handleSignals(ctx context.Context, cluster *ipfscluster.Cluster) error {
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signalChan := make(chan os.Signal, 20)
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signal.Notify(
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signalChan,
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syscall.SIGINT,
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syscall.SIGTERM,
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syscall.SIGHUP,
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)
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var ctrlcCount int
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for {
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select {
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case <-signalChan:
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ctrlcCount++
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handleCtrlC(ctx, cluster, ctrlcCount)
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case <-cluster.Done():
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return nil
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}
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}
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}
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func handleCtrlC(ctx context.Context, cluster *ipfscluster.Cluster, ctrlcCount int) {
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switch ctrlcCount {
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case 1:
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go func() {
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err := cluster.Shutdown(ctx)
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checkErr("shutting down cluster", err)
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}()
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case 2:
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out(`
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!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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Shutdown is taking too long! Press Ctrl-c again to manually kill cluster.
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Note that this may corrupt the local cluster state.
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!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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`)
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case 3:
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out("exiting cluster NOW")
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locker.tryUnlock()
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os.Exit(-1)
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}
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}
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func setupAllocation(
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name string,
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diskInfCfg *disk.Config,
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numpinInfCfg *numpin.Config,
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) (ipfscluster.Informer, ipfscluster.PinAllocator) {
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switch name {
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case "disk", "disk-freespace":
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informer, err := disk.NewInformer(diskInfCfg)
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checkErr("creating informer", err)
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return informer, descendalloc.NewAllocator()
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case "disk-reposize":
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informer, err := disk.NewInformer(diskInfCfg)
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checkErr("creating informer", err)
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return informer, ascendalloc.NewAllocator()
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case "numpin", "pincount":
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informer, err := numpin.NewInformer(numpinInfCfg)
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checkErr("creating informer", err)
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return informer, ascendalloc.NewAllocator()
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default:
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err := errors.New("unknown allocation strategy")
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checkErr("", err)
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return nil, nil
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}
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}
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func setupPinTracker(
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name string,
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h host.Host,
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mapCfg *maptracker.Config,
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statelessCfg *stateless.Config,
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peerName string,
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) ipfscluster.PinTracker {
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switch name {
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case "map":
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ptrk := maptracker.NewMapPinTracker(mapCfg, h.ID(), peerName)
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logger.Debug("map pintracker loaded")
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return ptrk
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case "stateless":
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ptrk := stateless.New(statelessCfg, h.ID(), peerName)
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logger.Debug("stateless pintracker loaded")
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return ptrk
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default:
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err := errors.New("unknown pintracker type")
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checkErr("", err)
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return nil
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}
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}
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func setupDatastore(
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consensus string,
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ident *config.Identity,
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cfgs *cfgs,
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) ds.Datastore {
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stmgr := newStateManager(consensus, ident, cfgs)
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store, err := stmgr.GetStore()
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checkErr("creating datastore", err)
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return store
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}
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func setupConsensus(
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name string,
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h host.Host,
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dht *dht.IpfsDHT,
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pubsub *pubsub.PubSub,
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cfgs *cfgs,
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store ds.Datastore,
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raftStaging bool,
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) (ipfscluster.Consensus, error) {
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switch name {
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case "raft":
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rft, err := raft.NewConsensus(
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h,
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cfgs.raftCfg,
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store,
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raftStaging,
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)
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if err != nil {
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return nil, errors.Wrap(err, "creating Raft component")
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}
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return rft, nil
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case "crdt":
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convrdt, err := crdt.New(
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h,
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dht,
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pubsub,
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cfgs.crdtCfg,
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store,
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)
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if err != nil {
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return nil, errors.Wrap(err, "creating CRDT component")
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}
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return convrdt, nil
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default:
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return nil, errors.New("unknown consensus component")
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}
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}
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