release: v1.0.0

This commit is contained in:
Mohamed Sohail 2024-05-23 14:41:39 +08:00
commit 2640ecd03b
Signed by: kamikazechaser
GPG Key ID: 7DD45520C01CD85D
38 changed files with 3247 additions and 0 deletions

3
.gitignore vendored Normal file
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tracker_db
.vscode
.idx

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cmd/init.go Normal file
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package main
import (
"log/slog"
"os"
"strings"
"github.com/kamikazechaser/common/logg"
"github.com/knadh/koanf/parsers/toml"
"github.com/knadh/koanf/providers/env"
"github.com/knadh/koanf/providers/file"
"github.com/knadh/koanf/v2"
)
func initLogger() *slog.Logger {
loggOpts := logg.LoggOpts{
FormatType: logg.Logfmt,
LogLevel: slog.LevelInfo,
}
if os.Getenv("DEBUG") != "" {
loggOpts.LogLevel = slog.LevelDebug
}
if os.Getenv("DEV") != "" {
loggOpts.LogLevel = slog.LevelDebug
loggOpts.FormatType = logg.Human
}
return logg.NewLogg(loggOpts)
}
func initConfig() *koanf.Koanf {
var (
ko = koanf.New(".")
)
confFile := file.Provider(confFlag)
if err := ko.Load(confFile, toml.Parser()); err != nil {
lo.Error("could not parse configuration file", "error", err)
os.Exit(1)
}
if err := ko.Load(env.Provider("TRACKER_", ".", func(s string) string {
return strings.ReplaceAll(strings.ToLower(
strings.TrimPrefix(s, "TRACKER_")), "__", ".")
}), nil); err != nil {
lo.Error("could not override config from env vars", "error", err)
os.Exit(1)
}
return ko
}

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cmd/main.go Normal file
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package main
import (
"context"
"errors"
"flag"
"log/slog"
"net/http"
"os"
"os/signal"
"runtime"
"sync"
"syscall"
"time"
"github.com/grassrootseconomics/celo-tracker/internal/api"
"github.com/grassrootseconomics/celo-tracker/internal/backfiller"
"github.com/grassrootseconomics/celo-tracker/internal/cache"
"github.com/grassrootseconomics/celo-tracker/internal/chain"
"github.com/grassrootseconomics/celo-tracker/internal/db"
"github.com/grassrootseconomics/celo-tracker/internal/pool"
"github.com/grassrootseconomics/celo-tracker/internal/processor"
"github.com/grassrootseconomics/celo-tracker/internal/pub"
"github.com/grassrootseconomics/celo-tracker/internal/queue"
"github.com/grassrootseconomics/celo-tracker/internal/stats"
"github.com/grassrootseconomics/celo-tracker/internal/syncer"
"github.com/knadh/koanf/v2"
)
const defaultGracefulShutdownPeriod = time.Second * 30
var (
build = "dev"
confFlag string
lo *slog.Logger
ko *koanf.Koanf
)
func init() {
flag.StringVar(&confFlag, "config", "config.toml", "Config file location")
flag.Parse()
lo = initLogger()
ko = initConfig()
lo.Info("starting celo tracker", "build", build)
}
/*
Dependency Order
----------------
- Chain
- DB
- Cache
- JetStream Pub
- Worker Pool
- Block Processor
- Queue
- Stats
- Chain Syncer
- Backfiller
- API
*/
func main() {
var wg sync.WaitGroup
ctx, stop := notifyShutdown()
chain, err := chain.NewRPCFetcher(chain.RPCOpts{
RPCEndpoint: ko.MustString("chain.rpc_endpoint"),
ChainID: ko.MustInt64("chain.chainid"),
IsArchiveNode: ko.Bool("chain.archive_node"),
})
if err != nil {
lo.Error("could not initialize chain client", "error", err)
os.Exit(1)
}
db, err := db.New(db.DBOpts{
Logg: lo,
DBType: ko.MustString("core.db_type"),
})
if err != nil {
lo.Error("could not initialize blocks db", "error", err)
os.Exit(1)
}
cache, err := cache.New(cache.CacheOpts{
Chain: chain,
Logg: lo,
CacheType: ko.MustString("core.cache_type"),
Blacklist: ko.MustStrings("bootstrap.blacklist"),
Registries: ko.MustStrings("bootstrap.ge_registries"),
Watchlist: ko.MustStrings("bootstrap.watchlist"),
})
if err != nil {
lo.Error("could not initialize cache", "error", err)
os.Exit(1)
}
jetStreamPub, err := pub.NewJetStreamPub(pub.JetStreamOpts{
Endpoint: ko.MustString("jetstream.endpoint"),
PersistDuration: time.Duration(ko.MustInt("jetstream.persist_duration_hrs")) * time.Hour,
DedupDuration: time.Duration(ko.MustInt("jetstream.dedup_duration_hrs")) * time.Hour,
Logg: lo,
})
if err != nil {
lo.Error("could not initialize jetstream pub", "error", err)
os.Exit(1)
}
poolOpts := pool.PoolOpts{
Logg: lo,
WorkerCount: ko.Int("core.pool_size"),
}
if ko.Int("core.pool_size") <= 0 {
poolOpts.WorkerCount = runtime.NumCPU() * 3
}
workerPool := pool.NewPool(poolOpts)
stats := stats.New(stats.StatsOpts{
Cache: cache,
Logg: lo,
Pool: workerPool,
})
blockProcessor := processor.NewProcessor(processor.ProcessorOpts{
Cache: cache,
DB: db,
Chain: chain,
Pub: jetStreamPub,
Logg: lo,
Stats: stats,
})
queue := queue.New(queue.QueueOpts{
Logg: lo,
Processor: blockProcessor,
Pool: workerPool,
})
chainSyncer, err := syncer.New(syncer.SyncerOpts{
DB: db,
Chain: chain,
Logg: lo,
Queue: queue,
Stats: stats,
StartBlock: ko.Int64("chain.start_block"),
WebSocketEndpoint: ko.MustString("chain.ws_endpoint"),
})
if err != nil {
lo.Error("could not initialize chain syncer", "error", err)
os.Exit(1)
}
backfiller := backfiller.New(backfiller.BackfillerOpts{
DB: db,
Logg: lo,
Queue: queue,
})
apiServer := &http.Server{
Addr: ko.MustString("api.address"),
Handler: api.New(stats),
}
wg.Add(1)
go func() {
defer wg.Done()
queue.Process()
}()
wg.Add(1)
go func() {
defer wg.Done()
chainSyncer.Start()
}()
wg.Add(1)
go func() {
defer wg.Done()
if err := backfiller.Run(false); err != nil {
lo.Error("backfiller initial run error", "error", err)
}
backfiller.Start()
}()
wg.Add(1)
go func() {
defer wg.Done()
lo.Info("metrics and stats server starting", "address", ko.MustString("api.address"))
if err := apiServer.ListenAndServe(); err != http.ErrServerClosed {
lo.Error("failed to start API server", "error", err)
os.Exit(1)
}
}()
wg.Add(1)
go func() {
defer wg.Done()
stats.StartStatsPrinter()
}()
<-ctx.Done()
lo.Info("shutdown signal received")
shutdownCtx, cancel := context.WithTimeout(context.Background(), defaultGracefulShutdownPeriod)
wg.Add(1)
go func() {
defer wg.Done()
queue.Stop()
workerPool.StopAndWait()
stats.Stop()
chainSyncer.Stop()
backfiller.Stop()
jetStreamPub.Close()
db.Cleanup()
db.Close()
apiServer.Shutdown(shutdownCtx)
lo.Info("graceful shutdown routine complete")
}()
go func() {
wg.Wait()
stop()
cancel()
os.Exit(0)
}()
<-shutdownCtx.Done()
if errors.Is(shutdownCtx.Err(), context.DeadlineExceeded) {
stop()
cancel()
lo.Error("graceful shutdown period exceeded, forcefully shutting down")
}
os.Exit(1)
}
func notifyShutdown() (context.Context, context.CancelFunc) {
return signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGTERM, syscall.SIGINT)
}

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config.toml Normal file
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[api]
address = ":5001"
[core]
cache_type = "map"
db_type = "bolt"
pool_size = 0
archive_node = false
[chain]
ws_endpoint = "wss://forno.celo.org/ws"
rpc_endpoint = "https://forno.celo.org"
chainid = 42220
start_block = 0
[bootstrap]
ge_registries = [
"0xd1FB944748aca327a1ba036B082993D9dd9Bfa0C",
"0x0cc9f4fff962def35bb34a53691180b13e653030",
]
watchlist = [""]
blacklist = ["0x765DE816845861e75A25fCA122bb6898B8B1282a"]
[jetstream]
enable = true
endpoint = "nats://127.0.0.1:4222"
persist_duration_hrs = 48
dedup_duration_hrs = 6

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dev/docker-compose.yaml Normal file
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services:
nats:
image: nats:2
restart: unless-stopped
command: -js -sd /tmp/nats/data -m 8222
ports:
- 0.0.0.0:4222:4222
- 0.0.0.0:8222:8222

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go.mod Normal file
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module github.com/grassrootseconomics/celo-tracker
go 1.22.3
require (
github.com/VictoriaMetrics/metrics v1.33.1
github.com/alitto/pond v1.8.3
github.com/bits-and-blooms/bitset v1.13.0
github.com/celo-org/celo-blockchain v1.8.4
github.com/grassrootseconomics/celoutils/v3 v3.0.1
github.com/grassrootseconomics/w3-celo v0.17.2
github.com/kamikazechaser/common v0.2.0
github.com/knadh/koanf/parsers/toml v0.1.0
github.com/knadh/koanf/providers/env v0.1.0
github.com/knadh/koanf/providers/file v0.1.0
github.com/knadh/koanf/v2 v2.1.0
github.com/nats-io/nats.go v1.34.1
github.com/puzpuzpuz/xsync/v3 v3.1.0
github.com/uptrace/bunrouter v1.0.21
go.etcd.io/bbolt v1.3.9
)
require (
filippo.io/edwards25519 v1.0.0-alpha.2 // indirect
github.com/StackExchange/wmi v1.2.1 // indirect
github.com/VictoriaMetrics/fastcache v1.12.1 // indirect
github.com/btcsuite/btcd/btcec/v2 v2.2.0 // indirect
github.com/celo-org/celo-bls-go v0.3.4 // indirect
github.com/celo-org/celo-bls-go-android v0.3.3 // indirect
github.com/celo-org/celo-bls-go-ios v0.3.3 // indirect
github.com/celo-org/celo-bls-go-linux v0.3.3 // indirect
github.com/celo-org/celo-bls-go-macos v0.3.3 // indirect
github.com/celo-org/celo-bls-go-other v0.3.3 // indirect
github.com/celo-org/celo-bls-go-windows v0.3.3 // indirect
github.com/cespare/xxhash/v2 v2.2.0 // indirect
github.com/deckarep/golang-set v1.8.0 // indirect
github.com/decred/dcrd/dcrec/secp256k1/v4 v4.0.1 // indirect
github.com/fjl/memsize v0.0.2 // indirect
github.com/fsnotify/fsnotify v1.6.0 // indirect
github.com/go-ole/go-ole v1.3.0 // indirect
github.com/go-stack/stack v1.8.1 // indirect
github.com/go-viper/mapstructure/v2 v2.0.0-alpha.1 // indirect
github.com/golang/snappy v0.0.5-0.20220116011046-fa5810519dcb // indirect
github.com/gorilla/websocket v1.5.0 // indirect
github.com/hashicorp/golang-lru v0.5.5-0.20210104140557-80c98217689d // indirect
github.com/hdevalence/ed25519consensus v0.0.0-20201207055737-7fde80a9d5ff // indirect
github.com/holiman/bloomfilter/v2 v2.0.3 // indirect
github.com/holiman/uint256 v1.2.4 // indirect
github.com/huin/goupnp v1.3.0 // indirect
github.com/jackpal/go-nat-pmp v1.0.2 // indirect
github.com/klauspost/compress v1.17.2 // indirect
github.com/knadh/koanf/maps v0.1.1 // indirect
github.com/lmittmann/tint v1.0.4 // indirect
github.com/mattn/go-isatty v0.0.17 // indirect
github.com/mattn/go-runewidth v0.0.14 // indirect
github.com/mitchellh/copystructure v1.2.0 // indirect
github.com/mitchellh/reflectwalk v1.0.2 // indirect
github.com/nats-io/nkeys v0.4.7 // indirect
github.com/nats-io/nuid v1.0.1 // indirect
github.com/olekukonko/tablewriter v0.0.5 // indirect
github.com/onsi/gomega v1.10.1 // indirect
github.com/pelletier/go-toml v1.9.5 // indirect
github.com/pkg/errors v0.9.1 // indirect
github.com/prometheus/tsdb v0.7.1 // indirect
github.com/rivo/uniseg v0.4.2 // indirect
github.com/shirou/gopsutil v3.21.4-0.20210419000835-c7a38de76ee5+incompatible // indirect
github.com/stretchr/testify v1.8.4 // indirect
github.com/syndtr/goleveldb v1.0.1-0.20210819022825-2ae1ddf74ef7 // indirect
github.com/tklauser/go-sysconf v0.3.12 // indirect
github.com/tklauser/numcpus v0.6.1 // indirect
github.com/valyala/fastrand v1.1.0 // indirect
github.com/valyala/histogram v1.2.0 // indirect
golang.org/x/crypto v0.21.0 // indirect
golang.org/x/net v0.23.0 // indirect
golang.org/x/sync v0.7.0 // indirect
golang.org/x/sys v0.20.0 // indirect
golang.org/x/text v0.15.0 // indirect
golang.org/x/time v0.5.0 // indirect
golang.org/x/xerrors v0.0.0-20220517211312-f3a8303e98df // indirect
gopkg.in/natefinch/npipe.v2 v2.0.0-20160621034901-c1b8fa8bdcce // indirect
gopkg.in/yaml.v2 v2.4.0 // indirect
)

283
go.sum Normal file
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filippo.io/edwards25519 v1.0.0-alpha.2 h1:EWbZLqGEPSIj2W69gx04KtNVkyPIfe3uj0DhDQJonbQ=
filippo.io/edwards25519 v1.0.0-alpha.2/go.mod h1:X+pm78QAUPtFLi1z9PYIlS/bdDnvbCOGKtZ+ACWEf7o=
github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
github.com/StackExchange/wmi v1.2.1 h1:VIkavFPXSjcnS+O8yTq7NI32k0R5Aj+v39y29VYDOSA=
github.com/StackExchange/wmi v1.2.1/go.mod h1:rcmrprowKIVzvc+NUiLncP2uuArMWLCbu9SBzvHz7e8=
github.com/VictoriaMetrics/fastcache v1.12.1 h1:i0mICQuojGDL3KblA7wUNlY5lOK6a4bwt3uRKnkZU40=
github.com/VictoriaMetrics/fastcache v1.12.1/go.mod h1:tX04vaqcNoQeGLD+ra5pU5sWkuxnzWhEzLwhP9w653o=
github.com/VictoriaMetrics/metrics v1.33.1 h1:CNV3tfm2Kpv7Y9W3ohmvqgFWPR55tV2c7M2U6OIo+UM=
github.com/VictoriaMetrics/metrics v1.33.1/go.mod h1:r7hveu6xMdUACXvB8TYdAj8WEsKzWB0EkpJN+RDtOf8=
github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
github.com/alitto/pond v1.8.3 h1:ydIqygCLVPqIX/USe5EaV/aSRXTRXDEI9JwuDdu+/xs=
github.com/alitto/pond v1.8.3/go.mod h1:CmvIIGd5jKLasGI3D87qDkQxjzChdKMmnXMg3fG6M6Q=
github.com/allegro/bigcache v1.2.1-0.20190218064605-e24eb225f156 h1:eMwmnE/GDgah4HI848JfFxHt+iPb26b4zyfspmqY0/8=
github.com/allegro/bigcache v1.2.1-0.20190218064605-e24eb225f156/go.mod h1:Cb/ax3seSYIx7SuZdm2G2xzfwmv3TPSk2ucNfQESPXM=
github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
github.com/bits-and-blooms/bitset v1.13.0 h1:bAQ9OPNFYbGHV6Nez0tmNI0RiEu7/hxlYJRUA0wFAVE=
github.com/bits-and-blooms/bitset v1.13.0/go.mod h1:7hO7Gc7Pp1vODcmWvKMRA9BNmbv6a/7QIWpPxHddWR8=
github.com/btcsuite/btcd v0.23.2 h1:/YOgUp25sdCnP5ho6Hl3s0E438zlX+Kak7E6TgBgoT0=
github.com/btcsuite/btcd/btcec/v2 v2.2.0 h1:fzn1qaOt32TuLjFlkzYSsBC35Q3KUjT1SwPxiMSCF5k=
github.com/btcsuite/btcd/btcec/v2 v2.2.0/go.mod h1:U7MHm051Al6XmscBQ0BoNydpOTsFAn707034b5nY8zU=
github.com/btcsuite/btcd/chaincfg/chainhash v1.0.1 h1:q0rUy8C/TYNBQS1+CGKw68tLOFYSNEs0TFnxxnS9+4U=
github.com/btcsuite/btcd/chaincfg/chainhash v1.0.1/go.mod h1:7SFka0XMvUgj3hfZtydOrQY2mwhPclbT2snogU7SQQc=
github.com/buraksezer/consistent v0.0.0-20191006190839-693edf70fd72 h1:fUmDBbSvv1uOzo/t8WaxZMVb7BxJ8JECo5lGoR9c5bA=
github.com/buraksezer/consistent v0.0.0-20191006190839-693edf70fd72/go.mod h1:OEE5igu/CDjGegM1Jn6ZMo7R6LlV/JChAkjfQQIRLpg=
github.com/celo-org/celo-blockchain v1.8.4 h1:QJiRRGcZyO+PutT8WkFO1juORANAOGhN8yGNP7HvBqk=
github.com/celo-org/celo-blockchain v1.8.4/go.mod h1:0udpV9QnZ2rnVu3vf8G9Wjs5di6Bf9urjwGVgAUEGB8=
github.com/celo-org/celo-bls-go v0.3.4 h1:slNePT/gVjgUi7f8M4KTwBz/YYgv3JWU6XqyY0xKN84=
github.com/celo-org/celo-bls-go v0.3.4/go.mod h1:qDZHMC3bBqOw5qle28cRtKlEyJhslZtckcc2Tomqdks=
github.com/celo-org/celo-bls-go-android v0.3.3 h1:iZ2Gragn3JItkptmppeq1SENmNVc1f1W25UE4u231HY=
github.com/celo-org/celo-bls-go-android v0.3.3/go.mod h1:cFgtFRH8+6x5b+EyG5SqniXY3aKd03NBSGDgITscX34=
github.com/celo-org/celo-bls-go-ios v0.3.3 h1:/yHaEYft9WfXyPIGuJz7V2/r+tp2IqSpkvKsMsVgbuY=
github.com/celo-org/celo-bls-go-ios v0.3.3/go.mod h1:eaSoMpx29YV5oF7jXVChzJpNfxeZHnAa8G4PjL5CyW0=
github.com/celo-org/celo-bls-go-linux v0.3.3 h1:ukSQSIRyFCQeC1i7LJJunRKvlLuG1JMwNZ6DQZC51fE=
github.com/celo-org/celo-bls-go-linux v0.3.3/go.mod h1:DVpJadg22OrxBtMb0ub6iNVdqDBL/r6EDdWVAA0bHa0=
github.com/celo-org/celo-bls-go-macos v0.3.3 h1:H4ZGc+kS3e/w9Q6qru6FtlkYtVDS8eIQgw6UURB/Jlo=
github.com/celo-org/celo-bls-go-macos v0.3.3/go.mod h1:mYPuRqGMVxj6yZUeL6Q6ggtP52HPBS1jz+FvBPXQ7QA=
github.com/celo-org/celo-bls-go-other v0.3.3 h1:/Q9SLJK22hibPm/WI/OPxbBmgXTgUhjUgobfzz7qj/w=
github.com/celo-org/celo-bls-go-other v0.3.3/go.mod h1:tNxZNfekzyT7TdYQbyNPhkfpcYtA3KCU/IKX5FNxM/U=
github.com/celo-org/celo-bls-go-windows v0.3.3 h1:0IP+Ad9l+op50TIfkmFr+j7+TIjKksVROe+EoF7Ixa4=
github.com/celo-org/celo-bls-go-windows v0.3.3/go.mod h1:82GC5iJA9Qw5gynhYqR8ht3J+l/MO8eSNzgSTMI8UdA=
github.com/cespare/xxhash v1.1.0/go.mod h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghfAqPWnc=
github.com/cespare/xxhash/v2 v2.2.0 h1:DC2CZ1Ep5Y4k3ZQ899DldepgrayRUGE6BBZ/cd9Cj44=
github.com/cespare/xxhash/v2 v2.2.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/deckarep/golang-set v1.8.0 h1:sk9/l/KqpunDwP7pSjUg0keiOOLEnOBHzykLrsPppp4=
github.com/deckarep/golang-set v1.8.0/go.mod h1:5nI87KwE7wgsBU1F4GKAw2Qod7p5kyS383rP6+o6qqo=
github.com/decred/dcrd/crypto/blake256 v1.0.0 h1:/8DMNYp9SGi5f0w7uCm6d6M4OU2rGFK09Y2A4Xv7EE0=
github.com/decred/dcrd/crypto/blake256 v1.0.0/go.mod h1:sQl2p6Y26YV+ZOcSTP6thNdn47hh8kt6rqSlvmrXFAc=
github.com/decred/dcrd/dcrec/secp256k1/v4 v4.0.1 h1:YLtO71vCjJRCBcrPMtQ9nqBsqpA1m5sE92cU+pd5Mcc=
github.com/decred/dcrd/dcrec/secp256k1/v4 v4.0.1/go.mod h1:hyedUtir6IdtD/7lIxGeCxkaw7y45JueMRL4DIyJDKs=
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github.com/rogpeppe/go-internal v1.12.0 h1:exVL4IDcn6na9z1rAb56Vxr+CgyK3nn3O+epU5NdKM8=
github.com/rogpeppe/go-internal v1.12.0/go.mod h1:E+RYuTGaKKdloAfM02xzb0FW3Paa99yedzYV+kq4uf4=
github.com/rs/cors v1.7.0 h1:+88SsELBHx5r+hZ8TCkggzSstaWNbDvThkVK8H6f9ik=
github.com/rs/cors v1.7.0/go.mod h1:gFx+x8UowdsKA9AchylcLynDq+nNFfI8FkUZdN/jGCU=
github.com/shirou/gopsutil v3.21.4-0.20210419000835-c7a38de76ee5+incompatible h1:Bn1aCHHRnjv4Bl16T8rcaFjYSrGrIZvpiGO6P3Q4GpU=
github.com/shirou/gopsutil v3.21.4-0.20210419000835-c7a38de76ee5+incompatible/go.mod h1:5b4v6he4MtMOwMlS0TUMTu2PcXUg8+E1lC7eC3UO/RA=
github.com/spaolacci/murmur3 v0.0.0-20180118202830-f09979ecbc72/go.mod h1:JwIasOWyU6f++ZhiEuf87xNszmSA2myDM2Kzu9HwQUA=
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
github.com/stretchr/testify v1.8.4 h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcUk=
github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
github.com/syndtr/goleveldb v1.0.1-0.20210819022825-2ae1ddf74ef7 h1:epCh84lMvA70Z7CTTCmYQn2CKbY8j86K7/FAIr141uY=
github.com/syndtr/goleveldb v1.0.1-0.20210819022825-2ae1ddf74ef7/go.mod h1:q4W45IWZaF22tdD+VEXcAWRA037jwmWEB5VWYORlTpc=
github.com/tklauser/go-sysconf v0.3.12 h1:0QaGUFOdQaIVdPgfITYzaTegZvdCjmYO52cSFAEVmqU=
github.com/tklauser/go-sysconf v0.3.12/go.mod h1:Ho14jnntGE1fpdOqQEEaiKRpvIavV0hSfmBq8nJbHYI=
github.com/tklauser/numcpus v0.6.1 h1:ng9scYS7az0Bk4OZLvrNXNSAO2Pxr1XXRAPyjhIx+Fk=
github.com/tklauser/numcpus v0.6.1/go.mod h1:1XfjsgE2zo8GVw7POkMbHENHzVg3GzmoZ9fESEdAacY=
github.com/uptrace/bunrouter v1.0.21 h1:HXarvX+N834sXyHpl+I/TuE11m19kLW/qG5u3YpHUag=
github.com/uptrace/bunrouter v1.0.21/go.mod h1:TwT7Bc0ztF2Z2q/ZzMuSVkcb/Ig/d3MQeP2cxn3e1hI=
github.com/valyala/fastrand v1.1.0 h1:f+5HkLW4rsgzdNoleUOB69hyT9IlD2ZQh9GyDMfb5G8=
github.com/valyala/fastrand v1.1.0/go.mod h1:HWqCzkrkg6QXT8V2EXWvXCoow7vLwOFN002oeRzjapQ=
github.com/valyala/histogram v1.2.0 h1:wyYGAZZt3CpwUiIb9AU/Zbllg1llXyrtApRS815OLoQ=
github.com/valyala/histogram v1.2.0/go.mod h1:Hb4kBwb4UxsaNbbbh+RRz8ZR6pdodR57tzWUS3BUzXY=
go.etcd.io/bbolt v1.3.9 h1:8x7aARPEXiXbHmtUwAIv7eV2fQFHrLLavdiJ3uzJXoI=
go.etcd.io/bbolt v1.3.9/go.mod h1:zaO32+Ti0PK1ivdPtgMESzuzL2VPoIG1PCQNvOdo/dE=
golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
golang.org/x/crypto v0.21.0 h1:X31++rzVUdKhX5sWmSOFZxx8UW/ldWx55cbf08iNAMA=
golang.org/x/crypto v0.21.0/go.mod h1:0BP7YvVV9gBbVKyeTG0Gyn+gZm94bibOW5BjDEYAOMs=
golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
golang.org/x/net v0.0.0-20200520004742-59133d7f0dd7/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
golang.org/x/net v0.0.0-20200813134508-3edf25e44fcc/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
golang.org/x/net v0.23.0 h1:7EYJ93RZ9vYSZAIb2x3lnuvqO5zneoD6IvWjuhfxjTs=
golang.org/x/net v0.23.0/go.mod h1:JKghWKKOSdJwpW2GEx0Ja7fmaKnMsbu+MWVZTokSYmg=
golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.7.0 h1:YsImfSBoP9QPYL0xyKJPq0gcaJdG3rInoqxTWbfQu9M=
golang.org/x/sync v0.7.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20181107165924-66b7b1311ac8/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20190904154756-749cb33beabd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20190916202348-b4ddaad3f8a3/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20191005200804-aed5e4c7ecf9/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20191120155948-bd437916bb0e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20200519105757-fe76b779f299/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20200814200057-3d37ad5750ed/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20220908164124-27713097b956/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.1.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.8.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.11.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.20.0 h1:Od9JTbYCk261bKm4M/mw7AklTlFYIa0bIp9BgSm1S8Y=
golang.org/x/sys v0.20.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
golang.org/x/text v0.15.0 h1:h1V/4gjBv8v9cjcR6+AR5+/cIYK5N/WAgiv4xlsEtAk=
golang.org/x/text v0.15.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
golang.org/x/time v0.5.0 h1:o7cqy6amK/52YcAKIPlM3a+Fpj35zvRj2TP+e1xFSfk=
golang.org/x/time v0.5.0/go.mod h1:3BpzKBy/shNhVucY/MWOyx10tF3SFh9QdLuxbVysPQM=
golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
golang.org/x/xerrors v0.0.0-20220517211312-f3a8303e98df h1:5Pf6pFKu98ODmgnpvkJ3kFUOQGGLIzLIkbzUHp47618=
golang.org/x/xerrors v0.0.0-20220517211312-f3a8303e98df/go.mod h1:K8+ghG5WaK9qNqU5K3HdILfMLy1f3aNYFI/wnl100a8=
google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
google.golang.org/protobuf v1.20.1-0.20200309200217-e05f789c0967/go.mod h1:A+miEFZTKqfCUM6K7xSMQL9OKL/b6hQv+e19PK+JZNE=
google.golang.org/protobuf v1.21.0/go.mod h1:47Nbq4nVaFHyn7ilMalzfO3qCViNmqZ2kzikPIcrTAo=
google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
gopkg.in/natefinch/npipe.v2 v2.0.0-20160621034901-c1b8fa8bdcce h1:+JknDZhAj8YMt7GC73Ei8pv4MzjDUNPHgQWJdtMAaDU=
gopkg.in/natefinch/npipe.v2 v2.0.0-20160621034901-c1b8fa8bdcce/go.mod h1:5AcXVHNjg+BDxry382+8OKon8SEWiKktQR07RKPsv1c=
gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
gopkg.in/urfave/cli.v1 v1.20.0 h1:NdAVW6RYxDif9DhDHaAortIu956m2c0v+09AZBPTbE0=
gopkg.in/urfave/cli.v1 v1.20.0/go.mod h1:vuBzUtMdQeixQj8LVd+/98pzhxNGQoyuPBlsXHOQNO0=
gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

31
internal/api/api.go Normal file
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@ -0,0 +1,31 @@
package api
import (
"net/http"
"github.com/VictoriaMetrics/metrics"
"github.com/grassrootseconomics/celo-tracker/internal/stats"
"github.com/uptrace/bunrouter"
)
func New(statsCollector *stats.Stats) *bunrouter.Router {
router := bunrouter.New()
router.GET("/metrics", metricsHandler())
router.GET("/stats", statsHandler(statsCollector))
return router
}
func metricsHandler() bunrouter.HandlerFunc {
return func(w http.ResponseWriter, _ bunrouter.Request) error {
metrics.WritePrometheus(w, true)
return nil
}
}
func statsHandler(s *stats.Stats) bunrouter.HandlerFunc {
return func(w http.ResponseWriter, _ bunrouter.Request) error {
return bunrouter.JSON(w, s.APIStatsResponse())
}
}

View File

@ -0,0 +1,107 @@
package backfiller
import (
"fmt"
"log/slog"
"os"
"time"
"github.com/grassrootseconomics/celo-tracker/internal/db"
"github.com/grassrootseconomics/celo-tracker/internal/queue"
)
type (
BackfillerOpts struct {
DB db.DB
Logg *slog.Logger
Queue *queue.Queue
}
backfiller struct {
db db.DB
logg *slog.Logger
queue *queue.Queue
stopCh chan struct{}
ticker *time.Ticker
}
)
const (
verifierInterval = 20 * time.Second
epochBlocksCount = 17_280
)
func New(o BackfillerOpts) *backfiller {
return &backfiller{
db: o.DB,
logg: o.Logg,
queue: o.Queue,
stopCh: make(chan struct{}),
ticker: time.NewTicker(verifierInterval),
}
}
func (b *backfiller) Stop() {
b.ticker.Stop()
b.stopCh <- struct{}{}
}
func (b *backfiller) Start() {
for {
select {
case <-b.stopCh:
b.logg.Info("verifier shutting down")
b.ticker.Stop()
return
case <-b.ticker.C:
if b.queue.Size() <= 1 {
if err := b.Run(true); err != nil {
b.logg.Error("verifier tick run error", "err", err)
}
}
}
}
}
func (b *backfiller) Run(skipLatest bool) error {
lower, err := b.db.GetLowerBound()
if err != nil {
return fmt.Errorf("verifier could not get lower bound from db: err %v", err)
}
upper, err := b.db.GetUpperBound()
if err != nil {
return fmt.Errorf("verifier could not get upper bound from db: err %v", err)
}
if skipLatest {
upper--
}
missingBlocks, err := b.db.GetMissingValuesBitSet(lower, upper)
if err != nil {
return fmt.Errorf("verifier could not get missing values bitset: err %v", err)
}
missingBlocksCount := missingBlocks.Count()
if missingBlocksCount > 0 {
if missingBlocksCount >= epochBlocksCount {
b.logg.Warn("large number of blocks missing this may result in degraded RPC performance set FORCE_BACKFILL=* to continue", "missing_blocks", missingBlocksCount)
_, ok := os.LookupEnv("FORCE_BACKFILL")
if !ok {
os.Exit(0)
}
}
b.logg.Info("bootstrapping queue with missing blocks")
b.logg.Info("found missing blocks", "skip_latest", skipLatest, "missing_blocks_count", missingBlocksCount)
buffer := make([]uint, missingBlocksCount)
missingBlocks.NextSetMany(0, buffer)
defer missingBlocks.ClearAll()
for _, block := range buffer {
b.queue.Push(uint64(block))
}
}
return nil
}

61
internal/cache/cache.go vendored Normal file
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@ -0,0 +1,61 @@
package cache
import (
"context"
"fmt"
"log/slog"
"github.com/grassrootseconomics/celo-tracker/internal/chain"
)
type (
Cache interface {
Purge() error
Exists(string) bool
Add(string, bool)
Remove(string)
IsWatchableIndex(string) bool
Size() int
}
CacheOpts struct {
Chain chain.Chain
Logg *slog.Logger
CacheType string
Blacklist []string
Registries []string
Watchlist []string
}
)
func New(o CacheOpts) (Cache, error) {
var cache Cache
switch o.CacheType {
case "map":
cache = NewMapCache()
default:
cache = NewMapCache()
o.Logg.Warn("invalid cache type, using default type (map)")
}
geSmartContracts, err := o.Chain.Provider().GetGESmartContracts(
context.Background(),
o.Registries,
)
if err != nil {
return nil, fmt.Errorf("cache could not bootstrap GE smart contracts: err %v", err)
}
for k, v := range geSmartContracts {
cache.Add(k, v)
}
for _, address := range o.Watchlist {
cache.Add(address, false)
}
for _, address := range o.Blacklist {
cache.Remove(address)
}
o.Logg.Info("cache bootstrap complete", "cached_addresses", cache.Size())
return cache, nil
}

48
internal/cache/xmap.go vendored Normal file
View File

@ -0,0 +1,48 @@
package cache
import (
"github.com/puzpuzpuz/xsync/v3"
)
type mapCache struct {
xmap *xsync.Map
}
func NewMapCache() Cache {
return &mapCache{
xmap: xsync.NewMap(),
}
}
func (c *mapCache) Purge() error {
c.xmap.Clear()
return nil
}
func (c *mapCache) Exists(key string) bool {
_, ok := c.xmap.Load(key)
return ok
}
func (c *mapCache) Add(key string, value bool) {
c.xmap.Store(key, value)
}
func (c *mapCache) Remove(key string) {
c.xmap.Delete(key)
}
func (c *mapCache) Size() int {
return c.xmap.Size()
}
func (c *mapCache) IsWatchableIndex(key string) bool {
watchable, ok := c.xmap.Load(key)
if !ok {
return false
}
watchableBool, ok := watchable.(bool)
if !ok {
}
return watchableBool
}

21
internal/chain/chain.go Normal file
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@ -0,0 +1,21 @@
package chain
import (
"context"
"math/big"
"github.com/celo-org/celo-blockchain/common"
"github.com/celo-org/celo-blockchain/core/types"
"github.com/grassrootseconomics/celoutils/v3"
)
type Chain interface {
GetBlocks(context.Context, []uint64) ([]types.Block, error)
GetBlock(context.Context, uint64) (*types.Block, error)
GetLatestBlock(context.Context) (uint64, error)
GetTransaction(context.Context, common.Hash) (*types.Transaction, error)
GetReceipts(context.Context, *types.Block) ([]types.Receipt, error)
GetRevertReason(context.Context, common.Hash, *big.Int) (string, error)
Provider() *celoutils.Provider
IsArchiveNode() bool
}

139
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package chain
import (
"context"
"math/big"
"net/http"
"time"
"github.com/celo-org/celo-blockchain/common"
"github.com/celo-org/celo-blockchain/core/types"
"github.com/celo-org/celo-blockchain/rpc"
"github.com/grassrootseconomics/celoutils/v3"
"github.com/grassrootseconomics/w3-celo"
"github.com/grassrootseconomics/w3-celo/module/eth"
"github.com/grassrootseconomics/w3-celo/w3types"
)
type (
RPCOpts struct {
RPCEndpoint string
ChainID int64
IsArchiveNode bool
}
RPC struct {
provider *celoutils.Provider
isArchiveNode bool
}
)
func NewRPCFetcher(o RPCOpts) (Chain, error) {
customRPCClient, err := lowTimeoutRPCClient(o.RPCEndpoint)
if err != nil {
return nil, err
}
chainProvider := celoutils.NewProvider(
o.RPCEndpoint,
o.ChainID,
celoutils.WithClient(customRPCClient),
)
return &RPC{
provider: chainProvider,
isArchiveNode: o.IsArchiveNode,
}, nil
}
func lowTimeoutRPCClient(rpcEndpoint string) (*w3.Client, error) {
httpClient := &http.Client{
Timeout: 10 * time.Second,
}
rpcClient, err := rpc.DialHTTPWithClient(
rpcEndpoint,
httpClient,
)
if err != nil {
return nil, err
}
return w3.NewClient(rpcClient), nil
}
func (c *RPC) GetBlocks(ctx context.Context, blockNumbers []uint64) ([]types.Block, error) {
blocksCount := len(blockNumbers)
calls := make([]w3types.RPCCaller, blocksCount)
blocks := make([]types.Block, blocksCount)
for i, v := range blockNumbers {
calls[i] = eth.BlockByNumber(new(big.Int).SetUint64(v)).Returns(&blocks[i])
}
if err := c.provider.Client.CallCtx(ctx, calls...); err != nil {
return nil, err
}
return blocks, nil
}
func (c *RPC) GetBlock(ctx context.Context, blockNumber uint64) (*types.Block, error) {
var block types.Block
blockCall := eth.BlockByNumber(new(big.Int).SetUint64(blockNumber)).Returns(&block)
if err := c.provider.Client.CallCtx(ctx, blockCall); err != nil {
return nil, err
}
return &block, nil
}
func (c *RPC) GetLatestBlock(ctx context.Context) (uint64, error) {
var latestBlock big.Int
latestBlockCall := eth.BlockNumber().Returns(&latestBlock)
if err := c.provider.Client.CallCtx(ctx, latestBlockCall); err != nil {
return 0, err
}
return latestBlock.Uint64(), nil
}
func (c *RPC) GetTransaction(ctx context.Context, txHash common.Hash) (*types.Transaction, error) {
var transaction types.Transaction
if err := c.provider.Client.CallCtx(ctx, eth.Tx(txHash).Returns(&transaction)); err != nil {
return nil, err
}
return &transaction, nil
}
func (c *RPC) GetReceipts(ctx context.Context, block *types.Block) ([]types.Receipt, error) {
txCount := len(block.Transactions())
calls := make([]w3types.RPCCaller, txCount)
receipts := make([]types.Receipt, txCount)
for i, tx := range block.Transactions() {
calls[i] = eth.TxReceipt(tx.Hash()).Returns(&receipts[i])
}
if err := c.provider.Client.CallCtx(ctx, calls...); err != nil {
return nil, err
}
return receipts, nil
}
func (c *RPC) GetRevertReason(ctx context.Context, txHash common.Hash, blockNumber *big.Int) (string, error) {
return c.provider.SimulateRevertedTx(ctx, txHash, blockNumber)
}
func (c *RPC) Provider() *celoutils.Provider {
return c.provider
}
func (c *RPC) IsArchiveNode() bool {
return c.isArchiveNode
}

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internal/db/bolt.go Normal file
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package db
import (
"bytes"
"encoding/binary"
"fmt"
"github.com/bits-and-blooms/bitset"
bolt "go.etcd.io/bbolt"
)
type boltDB struct {
db *bolt.DB
}
const (
dbFolderName = "tracker_db"
upperBoundKey = "upper"
lowerBoundKey = "lower"
)
var sortableOrder = binary.BigEndian
func NewBoltDB() (DB, error) {
db, err := bolt.Open(dbFolderName, 0600, nil)
if err != nil {
return nil, err
}
db.Update(func(tx *bolt.Tx) error {
_, err := tx.CreateBucketIfNotExists([]byte("blocks"))
if err != nil {
return fmt.Errorf("create bucket: %s", err)
}
return nil
})
return &boltDB{
db: db,
}, nil
}
func (d *boltDB) Close() error {
return d.db.Close()
}
func (d *boltDB) get(k string) ([]byte, error) {
var v []byte
err := d.db.View(func(tx *bolt.Tx) error {
b := tx.Bucket([]byte("blocks"))
v = b.Get([]byte(k))
return nil
})
if err != nil {
return nil, err
}
return v, nil
}
func (d *boltDB) setUint64(k string, v uint64) error {
err := d.db.Update(func(tx *bolt.Tx) error {
b := tx.Bucket([]byte("blocks"))
return b.Put([]byte(k), marshalUint64(v))
})
if err != nil {
return err
}
return nil
}
func (d *boltDB) setUint64AsKey(v uint64) error {
err := d.db.Update(func(tx *bolt.Tx) error {
b := tx.Bucket([]byte("blocks"))
return b.Put(marshalUint64(v), nil)
})
if err != nil {
return err
}
return nil
}
func unmarshalUint64(b []byte) uint64 {
return sortableOrder.Uint64(b)
}
func marshalUint64(v uint64) []byte {
b := make([]byte, 8)
sortableOrder.PutUint64(b, v)
return b
}
func (d *boltDB) SetLowerBound(v uint64) error {
return d.setUint64(lowerBoundKey, v)
}
func (d *boltDB) GetLowerBound() (uint64, error) {
v, err := d.get(lowerBoundKey)
if err != nil {
return 0, err
}
if v == nil {
return 0, nil
}
return unmarshalUint64(v), nil
}
func (d *boltDB) SetUpperBound(v uint64) error {
return d.setUint64(upperBoundKey, v)
}
func (d *boltDB) GetUpperBound() (uint64, error) {
v, err := d.get(upperBoundKey)
if err != nil {
return 0, err
}
return unmarshalUint64(v), nil
}
func (d *boltDB) SetValue(v uint64) error {
return d.setUint64AsKey(v)
}
func (d *boltDB) GetMissingValuesBitSet(lowerBound uint64, upperBound uint64) (*bitset.BitSet, error) {
var (
b bitset.BitSet
)
err := d.db.View(func(tx *bolt.Tx) error {
var (
lowerRaw = marshalUint64(lowerBound)
upperRaw = marshalUint64(upperBound)
)
for i := lowerBound; i <= upperBound; i++ {
b.Set(uint(i))
}
c := tx.Bucket([]byte("blocks")).Cursor()
for k, _ := c.Seek(lowerRaw); k != nil && bytes.Compare(k, upperRaw) <= 0; k, _ = c.Next() {
b.Clear(uint(unmarshalUint64(k)))
}
return nil
})
if err != nil {
return nil, err
}
return &b, nil
}
func (d *boltDB) Cleanup() error {
lowerBound, err := d.GetLowerBound()
if err != nil {
return err
}
target := marshalUint64(lowerBound - 1)
err = d.db.View(func(tx *bolt.Tx) error {
b := tx.Bucket([]byte("blocks"))
c := b.Cursor()
for k, _ := c.First(); k != nil && bytes.Compare(k, target) <= 0; k, _ = c.Next() {
if err := b.Delete(k); err != nil {
return err
}
}
return nil
})
if err != nil {
return err
}
return nil
}

48
internal/db/db.go Normal file
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package db
import (
"log/slog"
"github.com/bits-and-blooms/bitset"
)
type (
DB interface {
Close() error
GetLowerBound() (uint64, error)
SetLowerBound(v uint64) error
SetUpperBound(uint64) error
GetUpperBound() (uint64, error)
SetValue(uint64) error
GetMissingValuesBitSet(uint64, uint64) (*bitset.BitSet, error)
Cleanup() error
}
DBOpts struct {
Logg *slog.Logger
DBType string
}
)
func New(o DBOpts) (DB, error) {
var (
err error
db DB
)
switch o.DBType {
case "bolt":
db, err = NewBoltDB()
if err != nil {
return nil, err
}
default:
db, err = NewBoltDB()
if err != nil {
return nil, err
}
o.Logg.Warn("invalid db type, using default type (bolt)")
}
return db, nil
}

37
internal/event/event.go Normal file
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package event
import "encoding/json"
type (
Event struct {
Block uint64 `json:"block"`
ContractAddress string `json:"contractAddress"`
Success bool `json:"success"`
Timestamp uint64 `json:"timestamp"`
TxHash string `json:"transactionHash"`
TxType string `json:"transactionType"`
Payload map[string]any `json:"payload"`
Index uint `json:"-"`
}
)
func (e Event) Serialize() ([]byte, error) {
jsonData, err := json.Marshal(e)
if err != nil {
return nil, err
}
return jsonData, err
}
func Deserialize(jsonData []byte) (Event, error) {
var (
event Event
)
if err := json.Unmarshal(jsonData, &event); err != nil {
return event, err
}
return event, nil
}

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package handler
import (
"context"
"math/big"
"github.com/celo-org/celo-blockchain/common"
"github.com/grassrootseconomics/celo-tracker/internal/event"
"github.com/grassrootseconomics/celo-tracker/internal/pub"
"github.com/grassrootseconomics/celoutils/v3"
"github.com/grassrootseconomics/w3-celo"
)
type faucetGiveHandler struct {
pub pub.Pub
}
const faucetGiveEventName = "FAUCET_GIVE"
var (
faucetGiveTopicHash = w3.H("0x26162814817e23ec5035d6a2edc6c422da2da2119e27cfca6be65cc2dc55ca4c")
faucetGiveEvent = w3.MustNewEvent("Give(address indexed _recipient, address indexed _token, uint256 _amount)")
faucetGiveToSig = w3.MustNewFunc("giveTo(address)", "uint256")
faucetGimmeSig = w3.MustNewFunc("gimme()", "uint256")
)
func NewFaucetGiveHandler(pub pub.Pub) *faucetGiveHandler {
return &faucetGiveHandler{
pub: pub,
}
}
func (h *faucetGiveHandler) Name() string {
return faucetGiveEventName
}
func (h *faucetGiveHandler) HandleLog(ctx context.Context, msg LogMessage) error {
if msg.Log.Topics[0] == faucetGiveTopicHash {
var (
recipient common.Address
token common.Address
amount big.Int
)
if err := faucetGiveEvent.DecodeArgs(msg.Log, &recipient, &token, &amount); err != nil {
return err
}
faucetGiveEvent := event.Event{
Index: msg.Log.Index,
Block: msg.Log.BlockNumber,
ContractAddress: msg.Log.Address.Hex(),
Success: true,
Timestamp: msg.Timestamp,
TxHash: msg.Log.TxHash.Hex(),
TxType: faucetGiveEventName,
Payload: map[string]any{
"recipient": recipient.Hex(),
"token": token.Hex(),
"amount": amount.String(),
},
}
return h.pub.Send(ctx, faucetGiveEvent)
}
return nil
}
func (h *faucetGiveHandler) HandleRevert(ctx context.Context, msg RevertMessage) error {
if len(msg.InputData) < 8 {
return nil
}
faucetGiveEvent := event.Event{
Block: msg.Block,
ContractAddress: msg.ContractAddress,
Success: false,
Timestamp: msg.Timestamp,
TxHash: msg.TxHash,
TxType: faucetGiveEventName,
}
switch msg.InputData[:8] {
case "63e4bff4":
var to common.Address
if err := faucetGiveToSig.DecodeArgs(w3.B(msg.InputData), &to); err != nil {
return err
}
faucetGiveEvent.Payload = map[string]any{
"revertReason": msg.RevertReason,
"recipient": to.Hex(),
"token": celoutils.ZeroAddress,
"amount": "0",
}
return h.pub.Send(ctx, faucetGiveEvent)
case "de82efb4":
faucetGiveEvent.Payload = map[string]any{
"revertReason": msg.RevertReason,
"recipient": celoutils.ZeroAddress,
"token": celoutils.ZeroAddress,
"amount": "0",
}
return h.pub.Send(ctx, faucetGiveEvent)
}
return nil
}

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package handler
import (
"context"
"github.com/celo-org/celo-blockchain/core/types"
"github.com/grassrootseconomics/celo-tracker/internal/cache"
"github.com/grassrootseconomics/celo-tracker/internal/pub"
)
type (
Handler interface {
Name() string
HandleLog(context.Context, LogMessage) error
HandleRevert(context.Context, RevertMessage) error
}
HandlerPipeline []Handler
LogMessage struct {
Log *types.Log
Timestamp uint64
}
RevertMessage struct {
From string
RevertReason string
InputData string
Block uint64
ContractAddress string
Timestamp uint64
TxHash string
}
)
func New(pub pub.Pub, cache cache.Cache) HandlerPipeline {
return []Handler{
NewTokenTransferHandler(pub),
NewPoolSwapHandler(pub),
NewFaucetGiveHandler(pub),
NewPoolDepositHandler(pub),
NewTokenMintHandler(pub),
NewTokenBurnHandler(pub),
NewQuoterPriceHandler(pub),
NewOwnershipHandler(pub),
NewSealHandler(pub),
NewIndexAddHandler(pub, cache),
NewIndexRemoveHandler(pub, cache),
}
}

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package handler
import (
"context"
"github.com/celo-org/celo-blockchain/common"
"github.com/grassrootseconomics/celo-tracker/internal/cache"
"github.com/grassrootseconomics/celo-tracker/internal/event"
"github.com/grassrootseconomics/celo-tracker/internal/pub"
"github.com/grassrootseconomics/w3-celo"
)
type indexAddHandler struct {
pub pub.Pub
cache cache.Cache
}
const indexAddEventName = "INDEX_ADD"
var (
indexAddTopicHash = w3.H("0xa226db3f664042183ee0281230bba26cbf7b5057e50aee7f25a175ff45ce4d7f")
indexAddEvent = w3.MustNewEvent("AddressAdded(address _token)")
indexAddSig = w3.MustNewFunc("add(address)", "bool")
indexRegisterSig = w3.MustNewFunc("register(address)", "bool")
)
func NewIndexAddHandler(pub pub.Pub, cache cache.Cache) *indexAddHandler {
return &indexAddHandler{
pub: pub,
cache: cache,
}
}
func (h *indexAddHandler) Name() string {
return indexAddEventName
}
func (h *indexAddHandler) HandleLog(ctx context.Context, msg LogMessage) error {
if msg.Log.Topics[0] == indexAddTopicHash {
var address common.Address
if err := indexAddEvent.DecodeArgs(msg.Log, &address); err != nil {
return err
}
indexAddEvent := event.Event{
Index: msg.Log.Index,
Block: msg.Log.BlockNumber,
ContractAddress: msg.Log.Address.Hex(),
Success: true,
Timestamp: msg.Timestamp,
TxHash: msg.Log.TxHash.Hex(),
TxType: indexAddEventName,
Payload: map[string]any{
"address": address.Hex(),
},
}
if h.cache.IsWatchableIndex(address.Hex()) {
h.cache.Add(address.Hex(), false)
}
return h.pub.Send(ctx, indexAddEvent)
}
return nil
}
func (h *indexAddHandler) HandleRevert(ctx context.Context, msg RevertMessage) error {
if len(msg.InputData) < 8 {
return nil
}
indexAddEvent := event.Event{
Block: msg.Block,
ContractAddress: msg.ContractAddress,
Success: false,
Timestamp: msg.Timestamp,
TxHash: msg.TxHash,
TxType: indexAddEventName,
}
switch msg.InputData[:8] {
case "0a3b0a4f":
var address common.Address
indexAddEvent.Payload = map[string]any{
"revertReason": msg.RevertReason,
"address": address.Hex(),
}
if err := indexAddSig.DecodeArgs(w3.B(msg.InputData), &address); err != nil {
return err
}
return h.pub.Send(ctx, indexAddEvent)
case "4420e486":
var address common.Address
indexAddEvent.Payload = map[string]any{
"revertReason": msg.RevertReason,
"address": address.Hex(),
}
if err := indexRegisterSig.DecodeArgs(w3.B(msg.InputData), &address); err != nil {
return err
}
return h.pub.Send(ctx, indexAddEvent)
}
return nil
}

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package handler
import (
"context"
"github.com/celo-org/celo-blockchain/common"
"github.com/grassrootseconomics/celo-tracker/internal/cache"
"github.com/grassrootseconomics/celo-tracker/internal/event"
"github.com/grassrootseconomics/celo-tracker/internal/pub"
"github.com/grassrootseconomics/w3-celo"
)
type indexRemoveHandler struct {
pub pub.Pub
cache cache.Cache
}
const indexRemoveEventName = "INDEX_REMOVE"
var (
indexRemoveTopicHash = w3.H("0x24a12366c02e13fe4a9e03d86a8952e85bb74a456c16e4a18b6d8295700b74bb")
indexRemoveEvent = w3.MustNewEvent("AddressRemoved(address _token)")
indexRemoveSig = w3.MustNewFunc("remove(address)", "bool")
)
func NewIndexRemoveHandler(pub pub.Pub, cache cache.Cache) *indexRemoveHandler {
return &indexRemoveHandler{
pub: pub,
cache: cache,
}
}
func (h *indexRemoveHandler) Name() string {
return indexRemoveEventName
}
func (h *indexRemoveHandler) HandleLog(ctx context.Context, msg LogMessage) error {
if msg.Log.Topics[0] == indexRemoveTopicHash {
var address common.Address
if err := indexRemoveEvent.DecodeArgs(msg.Log, &address); err != nil {
return err
}
indexRemoveEvent := event.Event{
Index: msg.Log.Index,
Block: msg.Log.BlockNumber,
ContractAddress: msg.Log.Address.Hex(),
Success: true,
Timestamp: msg.Timestamp,
TxHash: msg.Log.TxHash.Hex(),
TxType: indexRemoveEventName,
Payload: map[string]any{
"address": address.Hex(),
},
}
if h.cache.IsWatchableIndex(address.Hex()) {
h.cache.Remove(address.Hex())
}
return h.pub.Send(ctx, indexRemoveEvent)
}
return nil
}
func (h *indexRemoveHandler) HandleRevert(ctx context.Context, msg RevertMessage) error {
if len(msg.InputData) < 8 {
return nil
}
switch msg.InputData[:8] {
case "29092d0e":
var address common.Address
if err := indexRemoveSig.DecodeArgs(w3.B(msg.InputData), &address); err != nil {
return err
}
indexRemoveEvent := event.Event{
Block: msg.Block,
ContractAddress: msg.ContractAddress,
Success: false,
Timestamp: msg.Timestamp,
TxHash: msg.TxHash,
TxType: indexRemoveEventName,
Payload: map[string]any{
"revertReason": msg.RevertReason,
"address": address.Hex(),
},
}
return h.pub.Send(ctx, indexRemoveEvent)
}
return nil
}

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package handler
import (
"context"
"github.com/celo-org/celo-blockchain/common"
"github.com/grassrootseconomics/celo-tracker/internal/event"
"github.com/grassrootseconomics/celo-tracker/internal/pub"
"github.com/grassrootseconomics/w3-celo"
)
type ownershipHandler struct {
pub pub.Pub
}
const (
ownershipEventName = "OWNERSHIP_TRANSFERRED"
)
var (
ownershipTopicHash = w3.H("0x8be0079c531659141344cd1fd0a4f28419497f9722a3daafe3b4186f6b6457e0")
ownershipEvent = w3.MustNewEvent("OwnershipTransferred(address indexed previousOwner, address indexed newOwner)")
ownershipToSig = w3.MustNewFunc("transferOwnership(address)", "bool")
)
func NewOwnershipHandler(pub pub.Pub) *ownershipHandler {
return &ownershipHandler{
pub: pub,
}
}
func (h *ownershipHandler) Name() string {
return ownershipEventName
}
func (h *ownershipHandler) HandleLog(ctx context.Context, msg LogMessage) error {
if msg.Log.Topics[0] == ownershipTopicHash {
var (
previousOwner common.Address
newOwner common.Address
)
if err := ownershipEvent.DecodeArgs(msg.Log, &previousOwner, &newOwner); err != nil {
return err
}
ownershipEvent := event.Event{
Index: msg.Log.Index,
Block: msg.Log.BlockNumber,
ContractAddress: msg.Log.Address.Hex(),
Success: true,
Timestamp: msg.Timestamp,
TxHash: msg.Log.TxHash.Hex(),
TxType: ownershipEventName,
Payload: map[string]any{
"previousOwner": previousOwner.Hex(),
"newOwner": newOwner.Hex(),
},
}
return h.pub.Send(ctx, ownershipEvent)
}
return nil
}
func (h *ownershipHandler) HandleRevert(ctx context.Context, msg RevertMessage) error {
if len(msg.InputData) < 8 {
return nil
}
switch msg.InputData[:8] {
case "f2fde38b":
var newOwner common.Address
if err := ownershipToSig.DecodeArgs(w3.B(msg.InputData), &newOwner); err != nil {
return err
}
ownershipEvent := event.Event{
Block: msg.Block,
ContractAddress: msg.ContractAddress,
Success: false,
Timestamp: msg.Timestamp,
TxHash: msg.TxHash,
TxType: ownershipEventName,
Payload: map[string]any{
"revertReason": msg.RevertReason,
"previousOwner": msg.From,
"newOwner": newOwner.Hex(),
},
}
return h.pub.Send(ctx, ownershipEvent)
}
return nil
}

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package handler
import (
"context"
"math/big"
"github.com/celo-org/celo-blockchain/common"
"github.com/grassrootseconomics/celo-tracker/internal/event"
"github.com/grassrootseconomics/celo-tracker/internal/pub"
"github.com/grassrootseconomics/w3-celo"
)
type poolDepositHandler struct {
pub pub.Pub
}
const poolDepositEventName = "POOL_DEPOSIT"
var (
poolDepositTopicHash = w3.H("0x5548c837ab068cf56a2c2479df0882a4922fd203edb7517321831d95078c5f62")
poolDepositEvent = w3.MustNewEvent("Deposit(address indexed initiator, address indexed tokenIn, uint256 amountIn)")
poolDepositSig = w3.MustNewFunc("deposit(address, uint256)", "")
)
func NewPoolDepositHandler(pub pub.Pub) *poolDepositHandler {
return &poolDepositHandler{
pub: pub,
}
}
func (h *poolDepositHandler) Name() string {
return poolDepositEventName
}
func (h *poolDepositHandler) HandleLog(ctx context.Context, msg LogMessage) error {
if msg.Log.Topics[0] == poolDepositTopicHash {
var (
initiator common.Address
tokenIn common.Address
amountIn big.Int
)
if err := poolDepositEvent.DecodeArgs(
msg.Log,
&initiator,
&tokenIn,
&amountIn,
); err != nil {
return err
}
poolDepositEvent := event.Event{
Index: msg.Log.Index,
Block: msg.Log.BlockNumber,
ContractAddress: msg.Log.Address.Hex(),
Success: true,
Timestamp: msg.Timestamp,
TxHash: msg.Log.TxHash.Hex(),
TxType: poolDepositEventName,
Payload: map[string]any{
"initiator": initiator.Hex(),
"tokenIn": tokenIn.Hex(),
"amountIn": amountIn.String(),
},
}
return h.pub.Send(ctx, poolDepositEvent)
}
return nil
}
func (h *poolDepositHandler) HandleRevert(ctx context.Context, msg RevertMessage) error {
if len(msg.InputData) < 8 {
return nil
}
switch msg.InputData[:8] {
case "47e7ef24":
var (
tokenIn common.Address
amountIn big.Int
)
if err := poolDepositSig.DecodeArgs(w3.B(msg.InputData), &tokenIn, &amountIn); err != nil {
return err
}
poolDepositEvent := event.Event{
Block: msg.Block,
ContractAddress: msg.ContractAddress,
Success: false,
Timestamp: msg.Timestamp,
TxHash: msg.TxHash,
TxType: poolDepositEventName,
Payload: map[string]any{
"revertReason": msg.RevertReason,
"initiator": msg.From,
"tokenIn": tokenIn.Hex(),
"amountIn": amountIn.String(),
},
}
return h.pub.Send(ctx, poolDepositEvent)
}
return nil
}

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package handler
import (
"context"
"math/big"
"github.com/celo-org/celo-blockchain/common"
"github.com/grassrootseconomics/celo-tracker/internal/event"
"github.com/grassrootseconomics/celo-tracker/internal/pub"
"github.com/grassrootseconomics/w3-celo"
)
type poolSwapHandler struct {
pub pub.Pub
}
const poolSwapEventName = "POOL_SWAP"
var (
poolSwapTopicHash = w3.H("0xd6d34547c69c5ee3d2667625c188acf1006abb93e0ee7cf03925c67cf7760413")
poolSwapEvent = w3.MustNewEvent("Swap(address indexed initiator, address indexed tokenIn, address tokenOut, uint256 amountIn, uint256 amountOut, uint256 fee)")
poolSwapSig = w3.MustNewFunc("withdraw(address, address, uint256)", "")
)
func NewPoolSwapHandler(pub pub.Pub) *poolSwapHandler {
return &poolSwapHandler{
pub: pub,
}
}
func (h *poolSwapHandler) Name() string {
return poolSwapEventName
}
func (h *poolSwapHandler) HandleLog(ctx context.Context, msg LogMessage) error {
if msg.Log.Topics[0] == poolSwapTopicHash {
var (
initiator common.Address
tokenIn common.Address
tokenOut common.Address
amountIn big.Int
amountOut big.Int
fee big.Int
)
if err := poolSwapEvent.DecodeArgs(
msg.Log,
&initiator,
&tokenIn,
&tokenOut,
&amountIn,
&amountOut,
&fee,
); err != nil {
return err
}
poolSwapEvent := event.Event{
Index: msg.Log.Index,
Block: msg.Log.BlockNumber,
ContractAddress: msg.Log.Address.Hex(),
Success: true,
Timestamp: msg.Timestamp,
TxHash: msg.Log.TxHash.Hex(),
TxType: poolSwapEventName,
Payload: map[string]any{
"initiator": initiator.Hex(),
"tokenIn": tokenIn.Hex(),
"tokenOut": tokenOut.Hex(),
"amountIn": amountIn.String(),
"amountOut": amountOut.String(),
"fee": fee.String(),
},
}
return h.pub.Send(ctx, poolSwapEvent)
}
return nil
}
func (h *poolSwapHandler) HandleRevert(ctx context.Context, msg RevertMessage) error {
if len(msg.InputData) < 8 {
return nil
}
switch msg.InputData[:8] {
case "d9caed12":
var (
tokenOut common.Address
tokenIn common.Address
amountIn big.Int
)
if err := poolSwapSig.DecodeArgs(w3.B(msg.InputData), &tokenOut, &tokenIn, &amountIn); err != nil {
return err
}
poolSwapEvent := event.Event{
Block: msg.Block,
ContractAddress: msg.ContractAddress,
Success: false,
Timestamp: msg.Timestamp,
TxHash: msg.TxHash,
TxType: poolSwapEventName,
Payload: map[string]any{
"revertReason": msg.RevertReason,
"initiator": msg.From,
"tokenIn": tokenIn.Hex(),
"tokenOut": tokenOut.Hex(),
"amountIn": amountIn.String(),
"amountOut": "0",
"fee": "0",
},
}
return h.pub.Send(ctx, poolSwapEvent)
}
return nil
}

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package handler
import (
"context"
"math/big"
"github.com/celo-org/celo-blockchain/common"
"github.com/grassrootseconomics/celo-tracker/internal/event"
"github.com/grassrootseconomics/celo-tracker/internal/pub"
"github.com/grassrootseconomics/w3-celo"
)
type quoterPriceHandler struct {
pub pub.Pub
}
const quoterPriceEventName = "QUOTER_PRICE_INDEX_UPDATED"
var (
quoterPriceTopicHash = w3.H("0xdb9ce1a76955721ca61ac50cd1b87f9ab8620325c8619a62192c2dc7871d56b1")
quoterPriceEvent = w3.MustNewEvent("PriceIndexUpdated(address _tokenAddress, uint256 _exchangeRate)")
quoterPriceToSig = w3.MustNewFunc("setPriceIndexValue(address, uint256)", "uint256")
)
func NewQuoterPriceHandler(pub pub.Pub) *quoterPriceHandler {
return &quoterPriceHandler{
pub: pub,
}
}
func (h *quoterPriceHandler) Name() string {
return quoterPriceEventName
}
func (h *quoterPriceHandler) HandleLog(ctx context.Context, msg LogMessage) error {
if msg.Log.Topics[0] == quoterPriceTopicHash {
var (
token common.Address
exchangeRate big.Int
)
if err := quoterPriceEvent.DecodeArgs(msg.Log, &token, &exchangeRate); err != nil {
return err
}
quoterPriceEvent := event.Event{
Index: msg.Log.Index,
Block: msg.Log.BlockNumber,
ContractAddress: msg.Log.Address.Hex(),
Success: true,
Timestamp: msg.Timestamp,
TxHash: msg.Log.TxHash.Hex(),
TxType: quoterPriceEventName,
Payload: map[string]any{
"token": token.Hex(),
"exchangeRate": exchangeRate.String(),
},
}
return h.pub.Send(ctx, quoterPriceEvent)
}
return nil
}
func (h *quoterPriceHandler) HandleRevert(ctx context.Context, msg RevertMessage) error {
if len(msg.InputData) < 8 {
return nil
}
switch msg.InputData[:8] {
case "ebc59dff":
var (
token common.Address
exchangeRate big.Int
)
if err := quoterPriceToSig.DecodeArgs(w3.B(msg.InputData), &token, &exchangeRate); err != nil {
return err
}
quoterPriceEvent := event.Event{
Block: msg.Block,
ContractAddress: msg.ContractAddress,
Success: false,
Timestamp: msg.Timestamp,
TxHash: msg.TxHash,
TxType: quoterPriceEventName,
Payload: map[string]any{
"revertReason": msg.RevertReason,
"token": token.Hex(),
"exchangeRate": exchangeRate.String(),
},
}
return h.pub.Send(ctx, quoterPriceEvent)
}
return nil
}

95
internal/handler/seal.go Normal file
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package handler
import (
"context"
"math/big"
"github.com/grassrootseconomics/celo-tracker/internal/event"
"github.com/grassrootseconomics/celo-tracker/internal/pub"
"github.com/grassrootseconomics/w3-celo"
)
type sealHandler struct {
pub pub.Pub
}
const sealEventName = "SEAL_STATE_CHANGE"
var (
sealTopicHash = w3.H("0x6b7e2e653f93b645d4ed7292d6429f96637084363e477c8aaea1a43ed13c284e")
sealEvent = w3.MustNewEvent("SealStateChange(bool indexed _final, uint256 _sealState)")
sealToSig = w3.MustNewFunc("seal(uint256)", "uint256")
)
func NewSealHandler(pub pub.Pub) *sealHandler {
return &sealHandler{
pub: pub,
}
}
func (h *sealHandler) Name() string {
return sealEventName
}
func (h *sealHandler) HandleLog(ctx context.Context, msg LogMessage) error {
if msg.Log.Topics[0] == sealTopicHash {
var (
final bool
sealState big.Int
)
if err := sealEvent.DecodeArgs(msg.Log, &final, &sealState); err != nil {
return err
}
sealEvent := event.Event{
Index: msg.Log.Index,
Block: msg.Log.BlockNumber,
ContractAddress: msg.Log.Address.Hex(),
Success: true,
Timestamp: msg.Timestamp,
TxHash: msg.Log.TxHash.Hex(),
TxType: sealEventName,
Payload: map[string]any{
"final": final,
"sealState": sealState.String(),
},
}
return h.pub.Send(ctx, sealEvent)
}
return nil
}
func (h *sealHandler) HandleRevert(ctx context.Context, msg RevertMessage) error {
if len(msg.InputData) < 8 {
return nil
}
switch msg.InputData[:8] {
case "86fe212d":
var sealState big.Int
if err := sealToSig.DecodeArgs(w3.B(msg.InputData), &sealState); err != nil {
return err
}
sealEvent := event.Event{
Block: msg.Block,
ContractAddress: msg.ContractAddress,
Success: false,
Timestamp: msg.Timestamp,
TxHash: msg.TxHash,
TxType: sealEventName,
Payload: map[string]any{
"revertReason": msg.RevertReason,
"sealState": sealState.String(),
},
}
return h.pub.Send(ctx, sealEvent)
}
return nil
}

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package handler
import (
"context"
"math/big"
"github.com/celo-org/celo-blockchain/common"
"github.com/grassrootseconomics/celo-tracker/internal/event"
"github.com/grassrootseconomics/celo-tracker/internal/pub"
"github.com/grassrootseconomics/w3-celo"
)
type tokenBurnHandler struct {
pub pub.Pub
}
const burnEventName = "TOKEN_BURN"
var (
tokenBurnTopicHash = w3.H("0xcc16f5dbb4873280815c1ee09dbd06736cffcc184412cf7a71a0fdb75d397ca5")
tokenBurnEvent = w3.MustNewEvent("tokenBurn(address indexed _tokenBurner, uint256 _value)")
tokenBurnToSig = w3.MustNewFunc("tokenBurn(uint256)", "bool")
)
func NewTokenBurnHandler(pub pub.Pub) *tokenBurnHandler {
return &tokenBurnHandler{
pub: pub,
}
}
func (h *tokenBurnHandler) Name() string {
return burnEventName
}
func (h *tokenBurnHandler) HandleLog(ctx context.Context, msg LogMessage) error {
if msg.Log.Topics[0] == tokenBurnTopicHash {
var (
tokenBurner common.Address
value big.Int
)
if err := tokenBurnEvent.DecodeArgs(msg.Log, &tokenBurner, &value); err != nil {
return err
}
tokenBurnEvent := event.Event{
Index: msg.Log.Index,
Block: msg.Log.BlockNumber,
ContractAddress: msg.Log.Address.Hex(),
Success: true,
Timestamp: msg.Timestamp,
TxHash: msg.Log.TxHash.Hex(),
TxType: burnEventName,
Payload: map[string]any{
"tokenBurner": tokenBurner.Hex(),
"value": value.String(),
},
}
return h.pub.Send(ctx, tokenBurnEvent)
}
return nil
}
func (h *tokenBurnHandler) HandleRevert(ctx context.Context, msg RevertMessage) error {
if len(msg.InputData) < 8 {
return nil
}
switch msg.InputData[:8] {
case "42966c68":
var value big.Int
if err := tokenBurnToSig.DecodeArgs(w3.B(msg.InputData), &value); err != nil {
return err
}
tokenBurnEvent := event.Event{
Block: msg.Block,
ContractAddress: msg.ContractAddress,
Success: false,
Timestamp: msg.Timestamp,
TxHash: msg.TxHash,
TxType: burnEventName,
Payload: map[string]any{
"revertReason": msg.RevertReason,
"tokenBurner": msg.From,
"value": value.String(),
},
}
return h.pub.Send(ctx, tokenBurnEvent)
}
return nil
}

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package handler
import (
"context"
"math/big"
"github.com/celo-org/celo-blockchain/common"
"github.com/grassrootseconomics/celo-tracker/internal/event"
"github.com/grassrootseconomics/celo-tracker/internal/pub"
"github.com/grassrootseconomics/w3-celo"
)
type tokenMintHandler struct {
pub pub.Pub
}
const mintEventName = "TOKEN_MINT"
var (
tokenMintTopicHash = w3.H("0xab8530f87dc9b59234c4623bf917212bb2536d647574c8e7e5da92c2ede0c9f8")
tokenMintEvent = w3.MustNewEvent("Mint(address indexed _tokenMinter, address indexed _beneficiary, uint256 _value)")
tokenMintToSig = w3.MustNewFunc("MintTo(address, uint256)", "bool")
)
func NewTokenMintHandler(pub pub.Pub) *tokenMintHandler {
return &tokenMintHandler{
pub: pub,
}
}
func (h *tokenMintHandler) Name() string {
return mintEventName
}
func (h *tokenMintHandler) HandleLog(ctx context.Context, msg LogMessage) error {
if msg.Log.Topics[0] == tokenMintTopicHash {
var (
tokenMinter common.Address
to common.Address
value big.Int
)
if err := tokenMintEvent.DecodeArgs(msg.Log, &tokenMinter, &to, &value); err != nil {
return err
}
tokenMintEvent := event.Event{
Index: msg.Log.Index,
Block: msg.Log.BlockNumber,
ContractAddress: msg.Log.Address.Hex(),
Success: true,
Timestamp: msg.Timestamp,
TxHash: msg.Log.TxHash.Hex(),
TxType: mintEventName,
Payload: map[string]any{
"tokenMinter": tokenMinter.Hex(),
"to": to.Hex(),
"value": value.String(),
},
}
return h.pub.Send(ctx, tokenMintEvent)
}
return nil
}
func (h *tokenMintHandler) HandleRevert(ctx context.Context, msg RevertMessage) error {
if len(msg.InputData) < 8 {
return nil
}
switch msg.InputData[:8] {
case "449a52f8":
var (
to common.Address
value big.Int
)
if err := tokenMintToSig.DecodeArgs(w3.B(msg.InputData), &to, &value); err != nil {
return err
}
tokenMintEvent := event.Event{
Block: msg.Block,
ContractAddress: msg.ContractAddress,
Success: false,
Timestamp: msg.Timestamp,
TxHash: msg.TxHash,
TxType: mintEventName,
Payload: map[string]any{
"revertReason": msg.RevertReason,
"tokenMinter": msg.From,
"to": to.Hex(),
"value": value.String(),
},
}
return h.pub.Send(ctx, tokenMintEvent)
}
return nil
}

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package handler
import (
"context"
"math/big"
"github.com/celo-org/celo-blockchain/common"
"github.com/grassrootseconomics/celo-tracker/internal/event"
"github.com/grassrootseconomics/celo-tracker/internal/pub"
"github.com/grassrootseconomics/w3-celo"
)
type tokenTransferHandler struct {
pub pub.Pub
}
const transferEventName = "TOKEN_TRANSFER"
var (
tokenTransferTopicHash = w3.H("0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef")
tokenTransferEvent = w3.MustNewEvent("Transfer(address indexed _from, address indexed _to, uint256 _value)")
tokenTransferSig = w3.MustNewFunc("transfer(address, uint256)", "bool")
tokenTransferFromSig = w3.MustNewFunc("transferFrom(address, address, uint256)", "bool")
)
func NewTokenTransferHandler(pub pub.Pub) *tokenTransferHandler {
return &tokenTransferHandler{
pub: pub,
}
}
func (h *tokenTransferHandler) Name() string {
return transferEventName
}
func (h *tokenTransferHandler) HandleLog(ctx context.Context, msg LogMessage) error {
if msg.Log.Topics[0] == tokenTransferTopicHash {
var (
from common.Address
to common.Address
value big.Int
)
if err := tokenTransferEvent.DecodeArgs(msg.Log, &from, &to, &value); err != nil {
return err
}
tokenTransferEvent := event.Event{
Index: msg.Log.Index,
Block: msg.Log.BlockNumber,
ContractAddress: msg.Log.Address.Hex(),
Success: true,
Timestamp: msg.Timestamp,
TxHash: msg.Log.TxHash.Hex(),
TxType: transferEventName,
Payload: map[string]any{
"from": from.Hex(),
"to": to.Hex(),
"value": value.String(),
},
}
return h.pub.Send(ctx, tokenTransferEvent)
}
return nil
}
func (h *tokenTransferHandler) HandleRevert(ctx context.Context, msg RevertMessage) error {
if len(msg.InputData) < 8 {
return nil
}
tokenTransferEvent := event.Event{
Block: msg.Block,
ContractAddress: msg.ContractAddress,
Success: false,
Timestamp: msg.Timestamp,
TxHash: msg.TxHash,
TxType: transferEventName,
}
switch msg.InputData[:8] {
case "a9059cbb":
var (
to common.Address
value big.Int
)
if err := tokenTransferSig.DecodeArgs(w3.B(msg.InputData), &to, &value); err != nil {
return err
}
tokenTransferEvent.Payload = map[string]any{
"revertReason": msg.RevertReason,
"from": msg.From,
"to": to.Hex(),
"value": value.String(),
}
return h.pub.Send(ctx, tokenTransferEvent)
case "23b872dd":
var (
from common.Address
to common.Address
value big.Int
)
if err := tokenTransferFromSig.DecodeArgs(w3.B(msg.InputData), &from, &to, &value); err != nil {
return err
}
tokenTransferEvent.Payload = map[string]any{
"revertReason": msg.RevertReason,
"from": from.Hex(),
"to": to.Hex(),
"value": value.String(),
}
return h.pub.Send(ctx, tokenTransferEvent)
}
return nil
}

28
internal/pool/pool.go Normal file
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package pool
import (
"log/slog"
"runtime/debug"
"github.com/alitto/pond"
)
type PoolOpts struct {
Logg *slog.Logger
WorkerCount int
}
func NewPool(o PoolOpts) *pond.WorkerPool {
return pond.New(
o.WorkerCount,
1,
pond.Strategy(pond.Balanced()),
pond.PanicHandler(panicHandler(o.Logg)),
)
}
func panicHandler(logg *slog.Logger) func(interface{}) {
return func(panic interface{}) {
logg.Error("block processor goroutine exited from a panic", "error", panic, "stack_trace", string(debug.Stack()))
}
}

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package processor
import (
"context"
"errors"
"fmt"
"log/slog"
"github.com/celo-org/celo-blockchain/common"
"github.com/celo-org/celo-blockchain/core/types"
"github.com/grassrootseconomics/celo-tracker/internal/cache"
"github.com/grassrootseconomics/celo-tracker/internal/chain"
"github.com/grassrootseconomics/celo-tracker/internal/db"
"github.com/grassrootseconomics/celo-tracker/internal/handler"
"github.com/grassrootseconomics/celo-tracker/internal/pub"
"github.com/grassrootseconomics/celo-tracker/internal/stats"
)
type (
ProcessorOpts struct {
Cache cache.Cache
DB db.DB
Chain chain.Chain
Pub pub.Pub
Logg *slog.Logger
Stats *stats.Stats
}
Processor struct {
cache cache.Cache
db db.DB
chain chain.Chain
handlerPipeline handler.HandlerPipeline
logg *slog.Logger
stats *stats.Stats
}
)
func NewProcessor(o ProcessorOpts) *Processor {
return &Processor{
cache: o.Cache,
db: o.DB,
handlerPipeline: handler.New(o.Pub, o.Cache),
chain: o.Chain,
logg: o.Logg,
stats: o.Stats,
}
}
func (p *Processor) ProcessBlock(ctx context.Context, blockNumber uint64) error {
block, err := p.chain.GetBlock(ctx, blockNumber)
if err != nil && !errors.Is(err, context.Canceled) {
return fmt.Errorf("block %d error: %v", blockNumber, err)
}
receiptsResp, err := p.chain.GetReceipts(ctx, block)
if err != nil && !errors.Is(err, context.Canceled) {
return fmt.Errorf("receipts fetch error: block %d: %v", blockNumber, err)
}
for _, receipt := range receiptsResp {
if receipt.Status > 0 {
for _, log := range receipt.Logs {
if p.cache.Exists(log.Address.Hex()) {
msg := handler.LogMessage{
Log: log,
Timestamp: block.Time(),
}
if err := p.handleLog(ctx, msg); err != nil && !errors.Is(err, context.Canceled) {
return fmt.Errorf("handle logs error: block %d: %v", blockNumber, err)
}
}
}
} else if p.isTrieAvailable(blockNumber) {
tx, err := p.chain.GetTransaction(ctx, receipt.TxHash)
if err != nil && !errors.Is(err, context.Canceled) {
return fmt.Errorf("get transaction error: tx %s: %v", receipt.TxHash.Hex(), err)
}
if tx.To() == nil {
return nil
}
if p.cache.Exists(tx.To().Hex()) {
from, err := types.Sender(types.LatestSignerForChainID(tx.ChainId()), tx)
if err != nil {
return fmt.Errorf("transaction decode error: tx %s: %v", receipt.TxHash.Hex(), err)
}
revertReason, err := p.chain.GetRevertReason(ctx, receipt.TxHash, receipt.BlockNumber)
if err != nil && !errors.Is(err, context.Canceled) {
return fmt.Errorf("get revert reason error: tx %s: %v", receipt.TxHash.Hex(), err)
}
msg := handler.RevertMessage{
From: from.Hex(),
RevertReason: revertReason,
InputData: common.Bytes2Hex(tx.Data()),
Block: blockNumber,
ContractAddress: tx.To().Hex(),
Timestamp: block.Time(),
TxHash: receipt.TxHash.Hex(),
}
if err := p.handleRevert(ctx, msg); err != nil && !errors.Is(err, context.Canceled) {
return fmt.Errorf("handle revert error: tx %s: %v", receipt.TxHash.Hex(), err)
}
}
}
}
if err := p.db.SetValue(blockNumber); err != nil {
return err
}
p.logg.Debug("successfully processed block", "block", blockNumber)
return nil
}
func (p *Processor) isTrieAvailable(blockNumber uint64) bool {
available := p.chain.IsArchiveNode() || p.stats.GetLatestBlock()-blockNumber <= 256
if !available {
p.logg.Warn("skipping block due to potentially missing trie", "block_number", blockNumber)
}
return available
}
func (p *Processor) handleLog(ctx context.Context, msg handler.LogMessage) error {
for _, handler := range p.handlerPipeline {
if err := handler.HandleLog(ctx, msg); err != nil {
return fmt.Errorf("log handler: %s err: %v", handler.Name(), err)
}
}
return nil
}
func (p *Processor) handleRevert(ctx context.Context, msg handler.RevertMessage) error {
for _, handler := range p.handlerPipeline {
if err := handler.HandleRevert(ctx, msg); err != nil {
return fmt.Errorf("revert handler: %s err: %v", handler.Name(), err)
}
}
return nil
}

30
internal/pub/console.go Normal file
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package pub
import (
"context"
"log/slog"
"github.com/grassrootseconomics/celo-tracker/internal/event"
)
type consolePub struct {
logg *slog.Logger
}
func NewConsolePub(logg *slog.Logger) Pub {
return &consolePub{
logg: logg,
}
}
func (p *consolePub) Send(_ context.Context, payload event.Event) error {
data, err := payload.Serialize()
if err != nil {
return err
}
p.logg.Info("emitted event", "json_payload", string(data))
return nil
}
func (p *consolePub) Close() {}

92
internal/pub/jetstream.go Normal file
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package pub
import (
"context"
"errors"
"fmt"
"log/slog"
"time"
"github.com/grassrootseconomics/celo-tracker/internal/event"
"github.com/nats-io/nats.go"
)
type (
JetStreamOpts struct {
Logg *slog.Logger
Endpoint string
DedupDuration time.Duration
PersistDuration time.Duration
}
jetStreamPub struct {
natsConn *nats.Conn
jsCtx nats.JetStreamContext
}
)
const streamName string = "TRACKER"
var streamSubjects = []string{
"TRACKER.*",
}
func NewJetStreamPub(o JetStreamOpts) (Pub, error) {
natsConn, err := nats.Connect(o.Endpoint)
if err != nil {
return nil, err
}
js, err := natsConn.JetStream()
if err != nil {
return nil, err
}
o.Logg.Info("successfully connected to NATS server")
stream, err := js.StreamInfo(streamName)
if err != nil && !errors.Is(err, nats.ErrStreamNotFound) {
return nil, err
}
if stream == nil {
_, err := js.AddStream(&nats.StreamConfig{
Name: streamName,
MaxAge: o.PersistDuration,
Storage: nats.FileStorage,
Subjects: streamSubjects,
Duplicates: o.DedupDuration,
})
if err != nil {
return nil, err
}
o.Logg.Info("successfully created NATS JetStream stream", "stream_name", streamName)
}
return &jetStreamPub{
natsConn: natsConn,
jsCtx: js,
}, nil
}
func (p *jetStreamPub) Close() {
if p.natsConn != nil {
p.natsConn.Close()
}
}
func (p *jetStreamPub) Send(_ context.Context, payload event.Event) error {
data, err := payload.Serialize()
if err != nil {
return err
}
_, err = p.jsCtx.Publish(
fmt.Sprintf("%s.%s", streamName, payload.TxType),
data,
nats.MsgId(fmt.Sprintf("%s:%d", payload.TxHash, payload.Index)),
)
if err != nil {
return err
}
return nil
}

12
internal/pub/pub.go Normal file
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package pub
import (
"context"
"github.com/grassrootseconomics/celo-tracker/internal/event"
)
type Pub interface {
Send(context.Context, event.Event) error
Close()
}

67
internal/queue/queue.go Normal file
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package queue
import (
"context"
"log/slog"
"github.com/alitto/pond"
"github.com/grassrootseconomics/celo-tracker/internal/processor"
)
type (
QueueOpts struct {
Logg *slog.Logger
Processor *processor.Processor
Pool *pond.WorkerPool
}
Queue struct {
logg *slog.Logger
processChan chan uint64
stopSignal chan interface{}
processor *processor.Processor
pool *pond.WorkerPool
}
)
func New(o QueueOpts) *Queue {
return &Queue{
logg: o.Logg,
processChan: make(chan uint64, 17_280),
stopSignal: make(chan interface{}),
processor: o.Processor,
pool: o.Pool,
}
}
func (q *Queue) Stop() {
q.stopSignal <- struct{}{}
}
func (q *Queue) Process() {
for {
select {
case <-q.stopSignal:
q.logg.Info("shutdown signal received stopping queue processing")
return
case block, ok := <-q.processChan:
if !ok {
return
}
q.pool.Submit(func() {
err := q.processor.ProcessBlock(context.Background(), block)
if err != nil {
q.logg.Error("block processor error", "block_number", block, "error", err)
}
})
}
}
}
func (q *Queue) Push(block uint64) {
q.processChan <- block
}
func (q *Queue) Size() int {
return len(q.processChan)
}

78
internal/stats/stats.go Normal file
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@ -0,0 +1,78 @@
package stats
import (
"log/slog"
"sync/atomic"
"time"
"github.com/alitto/pond"
"github.com/grassrootseconomics/celo-tracker/internal/cache"
)
type (
StatsOpts struct {
Cache cache.Cache
Logg *slog.Logger
Pool *pond.WorkerPool
}
Stats struct {
cache cache.Cache
logg *slog.Logger
pool *pond.WorkerPool
stopCh chan struct{}
latestBlock atomic.Uint64
}
)
const statsPrinterInterval = 5 * time.Second
func New(o StatsOpts) *Stats {
return &Stats{
cache: o.Cache,
logg: o.Logg,
pool: o.Pool,
stopCh: make(chan struct{}),
}
}
func (s *Stats) SetLatestBlock(v uint64) {
s.latestBlock.Store(v)
}
func (s *Stats) GetLatestBlock() uint64 {
return s.latestBlock.Load()
}
func (s *Stats) Stop() {
s.stopCh <- struct{}{}
}
func (s *Stats) APIStatsResponse() map[string]interface{} {
return map[string]interface{}{
"latestBlock": s.GetLatestBlock(),
"poolQueueSize": s.pool.WaitingTasks(),
"poolActiveWorkers": s.pool.RunningWorkers(),
"cacheSize": s.cache.Size(),
}
}
func (s *Stats) StartStatsPrinter() {
ticker := time.NewTicker(statsPrinterInterval)
for {
select {
case <-s.stopCh:
s.logg.Debug("stats shutting down")
return
case <-ticker.C:
s.logg.Info("block stats",
"latest_block", s.GetLatestBlock(),
"pool_queue_size", s.pool.WaitingTasks(),
"pool_active_workers", s.pool.RunningWorkers(),
"cache_size", s.cache.Size(),
)
}
}
}

View File

@ -0,0 +1,80 @@
package syncer
import (
"context"
"time"
"github.com/celo-org/celo-blockchain"
"github.com/celo-org/celo-blockchain/core/types"
"github.com/celo-org/celo-blockchain/event"
)
type BlockQueueFn func(uint64) error
const resubscribeInterval = 2 * time.Second
func (s *Syncer) Stop() {
if s.realtimeSub != nil {
s.realtimeSub.Unsubscribe()
}
}
func (s *Syncer) Start() {
s.realtimeSub = event.ResubscribeErr(resubscribeInterval, s.resubscribeFn())
}
func (s *Syncer) receiveRealtimeBlocks(ctx context.Context, fn BlockQueueFn) (celo.Subscription, error) {
newHeadersReceiver := make(chan *types.Header, 1)
sub, err := s.ethClient.SubscribeNewHead(ctx, newHeadersReceiver)
s.logg.Info("realtime syncer connected to ws endpoint")
if err != nil {
return nil, err
}
return event.NewSubscription(func(quit <-chan struct{}) error {
eventsCtx, eventsCancel := context.WithCancel(context.Background())
defer eventsCancel()
go func() {
select {
case <-quit:
s.logg.Info("realtime syncer stopping")
eventsCancel()
case <-eventsCtx.Done():
return
}
}()
for {
select {
case header := <-newHeadersReceiver:
if err := fn(header.Number.Uint64()); err != nil {
s.logg.Error("realtime block queuer error", "error", err)
}
case <-eventsCtx.Done():
s.logg.Info("realtime syncer shutting down")
return nil
case err := <-sub.Err():
return err
}
}
}), nil
}
func (s *Syncer) queueRealtimeBlock(blockNumber uint64) error {
s.queue.Push(blockNumber)
if err := s.db.SetUpperBound(blockNumber); err != nil {
return err
}
s.stats.SetLatestBlock(blockNumber)
return nil
}
func (s *Syncer) resubscribeFn() event.ResubscribeErrFunc {
return func(ctx context.Context, err error) (event.Subscription, error) {
if err != nil {
s.logg.Error("resubscribing after failed subscription", "error", err)
}
return s.receiveRealtimeBlocks(ctx, s.queueRealtimeBlock)
}
}

77
internal/syncer/syncer.go Normal file
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package syncer
import (
"context"
"log/slog"
"github.com/celo-org/celo-blockchain"
"github.com/celo-org/celo-blockchain/ethclient"
"github.com/grassrootseconomics/celo-tracker/internal/chain"
"github.com/grassrootseconomics/celo-tracker/internal/db"
"github.com/grassrootseconomics/celo-tracker/internal/queue"
"github.com/grassrootseconomics/celo-tracker/internal/stats"
)
type (
SyncerOpts struct {
DB db.DB
Chain chain.Chain
Logg *slog.Logger
Queue *queue.Queue
Stats *stats.Stats
StartBlock int64
WebSocketEndpoint string
}
Syncer struct {
db db.DB
ethClient *ethclient.Client
logg *slog.Logger
realtimeSub celo.Subscription
stats *stats.Stats
queue *queue.Queue
stopCh chan struct{}
}
)
func New(o SyncerOpts) (*Syncer, error) {
latestBlock, err := o.Chain.GetLatestBlock(context.Background())
if err != nil {
return nil, err
}
lowerBound, err := o.DB.GetLowerBound()
if err != nil {
return nil, err
}
if lowerBound == 0 {
if o.StartBlock > 0 {
if err := o.DB.SetLowerBound(uint64(o.StartBlock)); err != nil {
return nil, err
}
} else {
if err := o.DB.SetLowerBound(latestBlock); err != nil {
return nil, err
}
}
}
if err := o.DB.SetUpperBound(latestBlock); err != nil {
return nil, err
}
o.Stats.SetLatestBlock(latestBlock)
ethClient, err := ethclient.Dial(o.WebSocketEndpoint)
if err != nil {
return nil, err
}
return &Syncer{
db: o.DB,
ethClient: ethClient,
logg: o.Logg,
stats: o.Stats,
queue: o.Queue,
stopCh: make(chan struct{}),
}, nil
}

44
revive.toml Normal file
View File

@ -0,0 +1,44 @@
ignoreGeneratedHeader = true
severity = "warning"
confidence = 0.8
errorCode = 0
warningCode = 0
[rule.blank-imports]
[rule.context-as-argument]
[rule.context-keys-type]
[rule.dot-imports]
[rule.error-return]
[rule.error-strings]
[rule.error-naming]
[rule.increment-decrement]
[rule.var-naming]
[rule.var-declaration]
[rule.range]
[rule.receiver-naming]
[rule.time-naming]
[rule.unexported-return]
[rule.indent-error-flow]
[rule.errorf]
[rule.empty-block]
[rule.superfluous-else]
[rule.unused-parameter]
[rule.unreachable-code]
[rule.redefines-builtin-id]
[rule.defer]
arguments = [["loop", "method-call", "recover", "return", "immediate-recover"]]
[rule.string-of-int]
[rule.atomic]
[rule.call-to-gc]
[rule.constant-logical-expr]
[rule.identical-branches]
[rule.modifies-parameter]
[rule.modifies-value-receiver]
[rule.range-val-address]
[rule.range-val-in-closure]
[rule.unconditional-recursion]
[rule.waitgroup-by-value]