lotus/chain/metrics/consensus.go
Steven Allen 5733c71c50 Lint everything
We were ignoring quite a few error cases, and had one case where we weren't
actually updating state where we wanted to. Unfortunately, if the linter doesn't
pass, nobody has any reason to actually check lint failures in CI.

There are three remaining XXXs marked in the code for lint.
2020-08-20 20:46:36 -07:00

130 lines
2.6 KiB
Go

package metrics
import (
"context"
"encoding/json"
"github.com/filecoin-project/specs-actors/actors/abi"
"github.com/ipfs/go-cid"
logging "github.com/ipfs/go-log/v2"
pubsub "github.com/libp2p/go-libp2p-pubsub"
"go.uber.org/fx"
"github.com/filecoin-project/lotus/build"
"github.com/filecoin-project/lotus/chain/types"
"github.com/filecoin-project/lotus/node/impl/full"
"github.com/filecoin-project/lotus/node/modules/helpers"
)
var log = logging.Logger("metrics")
const baseTopic = "/fil/headnotifs/"
type Update struct {
Type string
}
func SendHeadNotifs(nickname string) func(mctx helpers.MetricsCtx, lc fx.Lifecycle, ps *pubsub.PubSub, chain full.ChainAPI) error {
return func(mctx helpers.MetricsCtx, lc fx.Lifecycle, ps *pubsub.PubSub, chain full.ChainAPI) error {
ctx := helpers.LifecycleCtx(mctx, lc)
lc.Append(fx.Hook{
OnStart: func(_ context.Context) error {
gen, err := chain.Chain.GetGenesis()
if err != nil {
return err
}
topic := baseTopic + gen.Cid().String()
go func() {
if err := sendHeadNotifs(ctx, ps, topic, chain, nickname); err != nil {
log.Error("consensus metrics error", err)
return
}
}()
go func() {
sub, err := ps.Subscribe(topic) //nolint
if err != nil {
return
}
defer sub.Cancel()
for {
if _, err := sub.Next(ctx); err != nil {
return
}
}
}()
return nil
},
})
return nil
}
}
type message struct {
// TipSet
Cids []cid.Cid
Blocks []*types.BlockHeader
Height abi.ChainEpoch
Weight types.BigInt
Time uint64
Nonce uint64
// Meta
NodeName string
}
func sendHeadNotifs(ctx context.Context, ps *pubsub.PubSub, topic string, chain full.ChainAPI, nickname string) error {
ctx, cancel := context.WithCancel(ctx)
defer cancel()
notifs, err := chain.ChainNotify(ctx)
if err != nil {
return err
}
// using unix nano time makes very sure we pick a nonce higher than previous restart
nonce := uint64(build.Clock.Now().UnixNano())
for {
select {
case notif := <-notifs:
n := notif[len(notif)-1]
w, err := chain.ChainTipSetWeight(ctx, n.Val.Key())
if err != nil {
return err
}
m := message{
Cids: n.Val.Cids(),
Blocks: n.Val.Blocks(),
Height: n.Val.Height(),
Weight: w,
NodeName: nickname,
Time: uint64(build.Clock.Now().UnixNano() / 1000_000),
Nonce: nonce,
}
b, err := json.Marshal(m)
if err != nil {
return err
}
//nolint
if err := ps.Publish(topic, b); err != nil {
return err
}
case <-ctx.Done():
return nil
}
nonce++
}
}