grassrootseconomics
/
cic-chain-events
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refactor: filters, pipeline, minor fixes, remove RPC support (#27) 

* devnet: snapshot

* refactor: pass struct through pipeline fllters

* refactor: replace timer with ticker

* refactor: filters, jetstream emitter

* add register filter
* update gas filter

* refactor: remove RPC fetcher support
This commit is contained in:
Mohamed Sohail 2023-02-24 13:28:30 +03:00 committed by GitHub
parent 6df00ddfce
commit 9d1b77e907
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
21 changed files with 478 additions and 447 deletions
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43
cmd/filters.go
View File

@ -4,33 +4,50 @@ import (
"strings"
"sync"
"github.com/grassrootseconomics/cic-chain-events/internal/events"
"github.com/grassrootseconomics/cic-chain-events/internal/filter"
)
var (
systemAddress = strings.ToLower("0x3D85285e39f05773aC92EAD27CB50a4385A529E4")
)
func initAddressFilter() filter.Filter {
// TODO: Bootstrap addresses from smart contract
// TODO: Add route to update cache
cache := &sync.Map{}
// Example bootstrap addresses
cache.Store(strings.ToLower("0x617f3112bf5397D0467D315cC709EF968D9ba546"), "USDT")
cache.Store(strings.ToLower("0x765DE816845861e75A25fCA122bb6898B8B1282a"), "cUSD")
cache.Store(strings.ToLower("0xD8763CBa276a3738E6DE85b4b3bF5FDed6D6cA73"), "cEUR")
cache.Store(strings.ToLower("0xB92463E2262E700e29c16416270c9Fdfa17934D7"), "TRNVoucher")
cache.Store(strings.ToLower("0xf2a1fc19Ad275A0EAe3445798761FeD1Eea725d5"), "GasFaucet")
cache.Store(strings.ToLower("0x1e041282695C66944BfC53cabce947cf35CEaf87"), "AddressIndex")
return filter.NewAddressFilter(filter.AddressFilterOpts{
Cache: cache,
Logg: lo,
Cache: cache,
Logg: lo,
SystemAddress: systemAddress,
})
}
func initDecodeFilter() filter.Filter {
js, err := initJetStream()
if err != nil {
lo.Fatal("filters: critical error loading jetstream", "error", err)
}
func initTransferFilter(eventEmitter events.EventEmitter) filter.Filter {
return filter.NewTransferFilter(filter.TransferFilterOpts{
EventEmitter: eventEmitter,
Logg: lo,
})
return filter.NewDecodeFilter(filter.DecodeFilterOpts{
Logg: lo,
JSCtx: js,
}
func initGasGiftFilter(eventEmitter events.EventEmitter) filter.Filter {
return filter.NewGasFilter(filter.GasFilterOpts{
EventEmitter: eventEmitter,
Logg: lo,
SystemAddress: systemAddress,
})
}
func initRegisterFilter(eventEmitter events.EventEmitter) filter.Filter {
return filter.NewRegisterFilter(filter.RegisterFilterOpts{
EventEmitter: eventEmitter,
Logg: lo,
})
}

35
cmd/init.go
View File

@ -4,6 +4,7 @@ import (
"strings"
"time"
"github.com/grassrootseconomics/cic-chain-events/internal/events"
"github.com/grassrootseconomics/cic-chain-events/internal/store"
"github.com/grassrootseconomics/cic-chain-events/pkg/fetch"
"github.com/jackc/pgx/v5"
@ -12,7 +13,6 @@ import (
"github.com/knadh/koanf/parsers/toml"
"github.com/knadh/koanf/providers/env"
"github.com/knadh/koanf/providers/file"
"github.com/nats-io/nats.go"
"github.com/zerodha/logf"
)
@ -23,6 +23,7 @@ func initLogger(debug bool) logf.Logger {
if debug {
loggOpts.Level = logf.DebugLevel
loggOpts.EnableCaller = true
}
return logf.New(loggOpts)
@ -77,32 +78,16 @@ func initFetcher() fetch.Fetch {
})
}
func initJetStream() (nats.JetStreamContext, error) {
natsConn, err := nats.Connect(ko.MustString("jetstream.endpoint"))
func initJetStream() (events.EventEmitter, error) {
jsEmitter, err := events.NewJetStreamEventEmitter(events.JetStreamOpts{
ServerUrl: ko.MustString("jetstream.endpoint"),
PersistDuration: time.Duration(ko.MustInt("jetstream.persist_duration_hours")) * time.Hour,
DedupDuration: time.Duration(ko.MustInt("jetstream.dedup_duration_hours")) * time.Hour,
})
if err != nil {
return nil, err
}
js, err := natsConn.JetStream()
if err != nil {
return nil, err
}
// Bootstrap stream if it does not exist
stream, _ := js.StreamInfo(ko.MustString("jetstream.stream_name"))
if stream == nil {
lo.Info("jetstream: bootstrapping stream")
_, err = js.AddStream(&nats.StreamConfig{
Name: ko.MustString("jetstream.stream_name"),
MaxAge: time.Duration(ko.MustInt("jetstream.persist_duration_hours")) * time.Hour,
Storage: nats.FileStorage,
Subjects: ko.MustStrings("jetstream.stream_subjects"),
Duplicates: time.Duration(ko.MustInt("jetstream.dedup_duration_hours")) * time.Hour,
})
if err != nil {
return nil, err
}
}
return js, nil
return jsEmitter, nil
}

11
cmd/main.go
View File

@ -10,10 +10,10 @@ import (
"syscall"
"time"
"github.com/grassrootseconomics/cic-chain-events/internal/filter"
"github.com/grassrootseconomics/cic-chain-events/internal/pipeline"
"github.com/grassrootseconomics/cic-chain-events/internal/pool"
"github.com/grassrootseconomics/cic-chain-events/internal/syncer"
"github.com/grassrootseconomics/cic-chain-events/internal/filter"
"github.com/knadh/goyesql/v2"
"github.com/knadh/koanf"
"github.com/zerodha/logf"
@ -58,13 +58,20 @@ func main() {
lo.Fatal("main: critical error loading pg store", "error", err)
}
jsCtx, err := initJetStream()
if err != nil {
lo.Fatal("main: critical error loading jetstream context", "error", err)
}
graphqlFetcher := initFetcher()
pipeline := pipeline.NewPipeline(pipeline.PipelineOpts{
BlockFetcher: graphqlFetcher,
Filters: []filter.Filter{
initAddressFilter(),
initDecodeFilter(),
initGasGiftFilter(jsCtx),
initTransferFilter(jsCtx),
initRegisterFilter(jsCtx),
},
Logg: lo,
Store: pgStore,

28
config.toml
View File

@ -1,43 +1,35 @@
[metrics]
# Exposes Prometheus metrics
# /metrics endpoint
go_process = true
# API server
[api]
# Host and port
address = ":8080"
address = ":8085"
# Geth API endpoints
[chain]
graphql_endpoint = "https://rpc.celo.grassecon.net/graphql"
ws_endpoint = "wss://socket.celo.grassecon.net"
graphql_endpoint = "https://rpc.alfajores.celo.grassecon.net/graphql"
ws_endpoint = "wss://ws.alfajores.celo.grassecon.net"
# Syncer configs
[syncer]
# Number of goroutines assigned to the janitor worker pool
# Maximum number of missing blocks pushed into the worker queue every janitor sweep
janitor_queue_size = 500
# Number of goroutines assigned to the worker pool
janitor_concurrency = 5
# Syncer start block
initial_lower_bound = 17269000
# Max blocks in worker queue awaiting processing
janitor_queue_size = 500
# Janitor sweep interval
initial_lower_bound = 16373156
# Janitor sweep interval, should take into account concurrency and queue_size
janitor_sweep_interval = 5
[postgres]
# Default is the Docker container DSN
dsn = "postgres://postgres:postgres@localhost:5432/cic_chain_events"
# https://docs.nats.io/
[jetstream]
endpoint = "nats://localhost:4222"
stream_name = "CHAIN"
# Duration JetStream should keep the message before remocing it from the persistent store
# Duration JetStream should keep the message before GC
persist_duration_hours = 48
# Duration to ignore duplicate transactions (e.g. due to restart)
dedup_duration_hours = 6
# Stream subjects
stream_subjects = [
"CHAIN.transfer",
"CHAIN.transferFrom",
"CHAIN.mintTo"
]

1
go.mod
View File

@ -7,7 +7,6 @@ require (
github.com/alitto/pond v1.8.2
github.com/celo-org/celo-blockchain v1.6.1
github.com/goccy/go-json v0.10.0
github.com/grassrootseconomics/cic-celo-sdk v0.3.1
github.com/grassrootseconomics/w3-celo-patch v0.1.0
github.com/jackc/pgx/v5 v5.2.0
github.com/knadh/goyesql/v2 v2.2.0

2
go.sum
View File

@ -248,8 +248,6 @@ github.com/gorilla/mux v1.8.0/go.mod h1:DVbg23sWSpFRCP0SfiEN6jmj59UnW/n46BH5rLB7
github.com/gorilla/websocket v1.4.2 h1:+/TMaTYc4QFitKJxsQ7Yye35DkWvkdLcvGKqM+x0Ufc=
github.com/gorilla/websocket v1.4.2/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
github.com/graph-gophers/graphql-go v1.3.0/go.mod h1:9CQHMSxwO4MprSdzoIEobiHpoLtHm77vfxsvsIN5Vuc=
github.com/grassrootseconomics/cic-celo-sdk v0.3.1 h1:SzmMFrqxSIdgePqwbUdoS3PNP82MFnlOecycVk2ZYWg=
github.com/grassrootseconomics/cic-celo-sdk v0.3.1/go.mod h1:EiR6d03GYu6jlVKNL1MbTAw/bqAW2WP3J/lkrZxPMdU=
github.com/grassrootseconomics/w3-celo-patch v0.1.0 h1:0fev2hYkGEyFX2D4oUG8yy4jXhtHv7qUtLLboXL5ycw=
github.com/grassrootseconomics/w3-celo-patch v0.1.0/go.mod h1:JtkXc+yDUiQQJdhYTqddZI/itdYGHY7H8PNZzBo4hCk=
github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0/go.mod h1:8NvIoxWQoOIhqOTXgfV/d3M/q6VIi02HzZEHgUlZvzk=

17
internal/events/events.go Normal file
View File

@ -0,0 +1,17 @@
package events
type EventEmitter interface {
Close()
Publish(subject string, dedupId string, eventPayload interface{}) error
}
type MinimalTxInfo struct {
Block uint64 `json:"block"`
From string `json:"from"`
To string `json:"to"`
ContractAddress string `json:"contractAddress"`
Success bool `json:"success"`
TxHash string `json:"transactionHash"`
TxIndex uint `json:"transactionIndex"`
Value uint64 `json:"value"`
}

78
internal/events/jetstream.go Normal file
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@ -0,0 +1,78 @@
package events
import (
"time"
"github.com/goccy/go-json"
"github.com/nats-io/nats.go"
)
const (
StreamName string = "CHAIN"
StreamSubjects string = "CHAIN.*"
)
type JetStreamOpts struct {
ServerUrl string
PersistDuration time.Duration
DedupDuration time.Duration
}
type JetStream struct {
jsCtx nats.JetStreamContext
nc *nats.Conn
}
func NewJetStreamEventEmitter(o JetStreamOpts) (EventEmitter, error) {
natsConn, err := nats.Connect(o.ServerUrl)
if err != nil {
return nil, err
}
js, err := natsConn.JetStream()
if err != nil {
return nil, err
}
// Bootstrap stream if it doesn't exist.
stream, _ := js.StreamInfo(StreamName)
if stream == nil {
_, err = js.AddStream(&nats.StreamConfig{
Name: StreamName,
MaxAge: o.PersistDuration,
Storage: nats.FileStorage,
Subjects: []string{StreamSubjects},
Duplicates: o.DedupDuration,
})
if err != nil {
return nil, err
}
}
return &JetStream{
jsCtx: js,
nc: natsConn,
}, nil
}
// Close gracefully shutdowns the JetStream connection.
func (js *JetStream) Close() {
if js.nc != nil {
js.nc.Close()
}
}
// Publish publishes the JSON data to the NATS stream.
func (js *JetStream) Publish(subject string, dedupId string, eventPayload interface{}) error {
jsonData, err := json.Marshal(eventPayload)
if err != nil {
return err
}
_, err = js.jsCtx.Publish(subject, jsonData, nats.MsgId(dedupId))
if err != nil {
return err
}
return nil
}

21
internal/filter/address_filter.go
View File

@ -9,23 +9,30 @@ import (
)
type AddressFilterOpts struct {
Cache *sync.Map
Logg logf.Logger
Cache *sync.Map
Logg logf.Logger
SystemAddress string
}
type AddressFilter struct {
cache *sync.Map
logg logf.Logger
cache *sync.Map
logg logf.Logger
systemAddress string
}
func NewAddressFilter(o AddressFilterOpts) Filter {
return &AddressFilter{
cache: o.Cache,
logg: o.Logg,
cache: o.Cache,
logg: o.Logg,
systemAddress: o.SystemAddress,
}
}
func (f *AddressFilter) Execute(_ context.Context, transaction *fetch.Transaction) (bool, error) {
func (f *AddressFilter) Execute(_ context.Context, transaction fetch.Transaction) (bool, error) {
if transaction.From.Address == f.systemAddress {
return true, nil
}
if _, found := f.cache.Load(transaction.To.Address); found {
return true, nil
}

10
internal/filter/address_filter_test.go
View File

@ -7,7 +7,6 @@ import (
"github.com/grassrootseconomics/cic-chain-events/pkg/fetch"
"github.com/stretchr/testify/suite"
"github.com/zerodha/logf"
)
type AddressFilterSuite struct {
@ -20,15 +19,8 @@ func (s *AddressFilterSuite) SetupSuite() {
addressCache.Store("0x6914ba1c49d3c3f32a9e65a0661d7656cb292e9f", "")
logg := logf.New(
logf.Opts{
Level: logf.DebugLevel,
},
)
s.filter = NewAddressFilter(AddressFilterOpts{
Cache: addressCache,
Logg: logg,
})
}
@ -66,7 +58,7 @@ func (s *AddressFilterSuite) TestAddresses() {
}
for _, test := range tests {
next, err := s.filter.Execute(context.Background(), &test.transactionData)
next, err := s.filter.Execute(context.Background(), test.transactionData)
s.NoError(err)
s.Equal(test.want, next)
}

161
internal/filter/decode_filter.go
View File

@ -1,161 +0,0 @@
package filter
import (
"context"
"encoding/json"
"math/big"
"github.com/celo-org/celo-blockchain/common"
"github.com/grassrootseconomics/cic-chain-events/pkg/fetch"
"github.com/grassrootseconomics/w3-celo-patch"
"github.com/nats-io/nats.go"
"github.com/zerodha/logf"
)
var (
transferSig = w3.MustNewFunc("transfer(address, uint256)", "bool")
transferFromSig = w3.MustNewFunc("transferFrom(address, address, uint256)", "bool")
mintToSig = w3.MustNewFunc("mintTo(address, uint256)", "bool")
)
type DecodeFilterOpts struct {
Logg logf.Logger
JSCtx nats.JetStreamContext
}
type DecodeFilter struct {
logg logf.Logger
js nats.JetStreamContext
}
type minimalTxInfo struct {
Block uint64 `json:"block"`
From string `json:"from"`
Success bool `json:"success"`
To string `json:"to"`
TokenAddress string `json:"tokenAddress"`
TxHash string `json:"transactionHash"`
TxIndex uint `json:"transactionIndex"`
Value uint64 `json:"value"`
}
func NewDecodeFilter(o DecodeFilterOpts) Filter {
return &DecodeFilter{
logg: o.Logg,
js: o.JSCtx,
}
}
func (f *DecodeFilter) Execute(_ context.Context, transaction *fetch.Transaction) (bool, error) {
switch transaction.InputData[:10] {
case "0xa9059cbb":
var (
to common.Address
value big.Int
)
if err := transferSig.DecodeArgs(w3.B(transaction.InputData), &to, &value); err != nil {
return false, err
}
transferEvent := &minimalTxInfo{
Block: transaction.Block.Number,
From: transaction.From.Address,
To: to.Hex(),
TokenAddress: transaction.To.Address,
TxHash: transaction.Hash,
TxIndex: transaction.Index,
Value: value.Uint64(),
}
if transaction.Status == 1 {
transferEvent.Success = true
}
json, err := json.Marshal(transferEvent)
if err != nil {
return false, err
}
_, err = f.js.Publish("CHAIN.transfer", json, nats.MsgId(transaction.Hash))
if err != nil {
return false, err
}
return true, nil
case "0x23b872dd":
var (
from common.Address
to common.Address
value big.Int
)
if err := transferFromSig.DecodeArgs(w3.B(transaction.InputData), &from, &to, &value); err != nil {
return false, err
}
transferFromEvent := &minimalTxInfo{
Block: transaction.Block.Number,
From: from.Hex(),
To: to.Hex(),
TokenAddress: transaction.To.Address,
TxHash: transaction.Hash,
TxIndex: transaction.Index,
Value: value.Uint64(),
}
if transaction.Status == 1 {
transferFromEvent.Success = true
}
json, err := json.Marshal(transferFromEvent)
if err != nil {
return false, err
}
_, err = f.js.Publish("CHAIN.transferFrom", json, nats.MsgId(transaction.Hash))
if err != nil {
return false, err
}
return true, nil
case "0x449a52f8":
var (
to common.Address
value big.Int
)
if err := mintToSig.DecodeArgs(w3.B(transaction.InputData), &to, &value); err != nil {
return false, err
}
mintToEvent := &minimalTxInfo{
Block: transaction.Block.Number,
From: transaction.From.Address,
To: to.Hex(),
TokenAddress: transaction.To.Address,
TxHash: transaction.Hash,
TxIndex: transaction.Index,
Value: value.Uint64(),
}
if transaction.Status == 1 {
mintToEvent.Success = true
}
json, err := json.Marshal(mintToEvent)
if err != nil {
return false, err
}
_, err = f.js.Publish("CHAIN.mintTo", json, nats.MsgId(transaction.Hash))
if err != nil {
return false, err
}
return true, nil
default:
f.logg.Debug("unknownSignature", "inpuData", transaction.InputData)
return false, nil
}
}

2
internal/filter/filter.go
View File

@ -8,5 +8,5 @@ import (
// Filter defines a read only filter which must return next as true/false or an error
type Filter interface {
Execute(ctx context.Context, inputTransaction *fetch.Transaction) (next bool, err error)
Execute(ctx context.Context, inputTransaction fetch.Transaction) (next bool, err error)
}

68
internal/filter/gas_filter.go Normal file
View File

@ -0,0 +1,68 @@
package filter
import (
"context"
"github.com/celo-org/celo-blockchain/common/hexutil"
"github.com/grassrootseconomics/cic-chain-events/internal/events"
"github.com/grassrootseconomics/cic-chain-events/pkg/fetch"
"github.com/zerodha/logf"
)
const (
gasFilterEventSubject = "CHAIN.gas"
)
type GasFilterOpts struct {
EventEmitter events.EventEmitter
Logg logf.Logger
SystemAddress string
}
type GasFilter struct {
eventEmitter events.EventEmitter
logg logf.Logger
systemAddress string
}
func NewGasFilter(o GasFilterOpts) Filter {
return &GasFilter{
eventEmitter: o.EventEmitter,
logg: o.Logg,
systemAddress: o.SystemAddress,
}
}
func (f *GasFilter) Execute(_ context.Context, transaction fetch.Transaction) (bool, error) {
transferValue, err := hexutil.DecodeUint64(transaction.Value)
if err != nil {
return false, err
}
// TODO: This is a temporary shortcut to gift gas. Switch to gas faucet contract.
if transaction.From.Address == f.systemAddress && transferValue > 0 {
transferEvent := &events.MinimalTxInfo{
Block: transaction.Block.Number,
To: transaction.To.Address,
TxHash: transaction.Hash,
TxIndex: transaction.Index,
Value: transferValue,
}
if transaction.Status == 1 {
transferEvent.Success = true
}
if err := f.eventEmitter.Publish(
gasFilterEventSubject,
transaction.Hash,
transferEvent,
); err != nil {
return false, err
}
return true, nil
}
return true, nil
}

74
internal/filter/register_filter.go Normal file
View File

@ -0,0 +1,74 @@
package filter
import (
"context"
"github.com/celo-org/celo-blockchain/common"
"github.com/grassrootseconomics/cic-chain-events/internal/events"
"github.com/grassrootseconomics/cic-chain-events/pkg/fetch"
"github.com/grassrootseconomics/w3-celo-patch"
"github.com/zerodha/logf"
)
const (
registerEventSubject = "CHAIN.register"
)
var (
addSig = w3.MustNewFunc("add(address)", "bool")
)
type RegisterFilterOpts struct {
EventEmitter events.EventEmitter
Logg logf.Logger
}
type RegisterFilter struct {
eventEmitter events.EventEmitter
logg logf.Logger
}
func NewRegisterFilter(o RegisterFilterOpts) Filter {
return &RegisterFilter{
eventEmitter: o.EventEmitter,
logg: o.Logg,
}
}
func (f *RegisterFilter) Execute(_ context.Context, transaction fetch.Transaction) (bool, error) {
if len(transaction.InputData) < 10 {
return true, nil
}
if transaction.InputData[:10] == "0x0a3b0a4f" {
var address common.Address
if err := addSig.DecodeArgs(w3.B(transaction.InputData), &address); err != nil {
return false, err
}
addEvent := &events.MinimalTxInfo{
Block: transaction.Block.Number,
ContractAddress: transaction.To.Address,
To: transaction.To.Address,
TxHash: transaction.Hash,
TxIndex: transaction.Index,
}
if transaction.Status == 1 {
addEvent.Success = true
}
if err := f.eventEmitter.Publish(
registerEventSubject,
transaction.Hash,
addEvent,
); err != nil {
return false, err
}
return true, nil
}
return true, nil
}

156
internal/filter/transfer_filter.go Normal file
View File

@ -0,0 +1,156 @@
package filter
import (
"context"
"math/big"
"github.com/celo-org/celo-blockchain/common"
"github.com/grassrootseconomics/cic-chain-events/internal/events"
"github.com/grassrootseconomics/cic-chain-events/pkg/fetch"
"github.com/grassrootseconomics/w3-celo-patch"
"github.com/zerodha/logf"
)
const (
transferFilterEventSubject = "CHAIN.transfer"
)
var (
transferSig = w3.MustNewFunc("transfer(address, uint256)", "bool")
transferFromSig = w3.MustNewFunc("transferFrom(address, address, uint256)", "bool")
mintToSig = w3.MustNewFunc("mintTo(address, uint256)", "bool")
)
type TransferFilterOpts struct {
EventEmitter events.EventEmitter
Logg logf.Logger
}
type TransferFilter struct {
eventEmitter events.EventEmitter
logg logf.Logger
}
func NewTransferFilter(o TransferFilterOpts) Filter {
return &TransferFilter{
eventEmitter: o.EventEmitter,
logg: o.Logg,
}
}
func (f *TransferFilter) Execute(_ context.Context, transaction fetch.Transaction) (bool, error) {
if len(transaction.InputData) < 10 {
return true, nil
}
switch transaction.InputData[:10] {
case "0xa9059cbb":
var (
to common.Address
value big.Int
)
if err := transferSig.DecodeArgs(w3.B(transaction.InputData), &to, &value); err != nil {
return false, err
}
f.logg.Debug("transfer_filter: new reg", "transfer", to)
transferEvent := &events.MinimalTxInfo{
Block: transaction.Block.Number,
From: transaction.From.Address,
To: to.Hex(),
ContractAddress: transaction.To.Address,
TxHash: transaction.Hash,
TxIndex: transaction.Index,
Value: value.Uint64(),
}
if transaction.Status == 1 {
transferEvent.Success = true
}
if err := f.eventEmitter.Publish(
transferFilterEventSubject,
transaction.Hash,
transferEvent,
); err != nil {
return false, err
}
return true, nil
case "0x23b872dd":
var (
from common.Address
to common.Address
value big.Int
)
if err := transferFromSig.DecodeArgs(w3.B(transaction.InputData), &from, &to, &value); err != nil {
return false, err
}
f.logg.Debug("transfer_filter: new reg", "transferFrom", to)
transferEvent := &events.MinimalTxInfo{
Block: transaction.Block.Number,
From: from.Hex(),
To: to.Hex(),
ContractAddress: transaction.To.Address,
TxHash: transaction.Hash,
TxIndex: transaction.Index,
Value: value.Uint64(),
}
if transaction.Status == 1 {
transferEvent.Success = true
}
if err := f.eventEmitter.Publish(
transferFilterEventSubject,
transaction.Hash,
transferEvent,
); err != nil {
return false, err
}
return true, nil
case "0x449a52f8":
var (
to common.Address
value big.Int
)
if err := mintToSig.DecodeArgs(w3.B(transaction.InputData), &to, &value); err != nil {
return false, err
}
f.logg.Debug("transfer_filter: new reg", "mintTo", to)
transferEvent := &events.MinimalTxInfo{
Block: transaction.Block.Number,
From: transaction.From.Address,
To: to.Hex(),
ContractAddress: transaction.To.Address,
TxHash: transaction.Hash,
TxIndex: transaction.Index,
Value: value.Uint64(),
}
if transaction.Status == 1 {
transferEvent.Success = true
}
if err := f.eventEmitter.Publish(
transferFilterEventSubject,
transaction.Hash,
transferEvent,
); err != nil {
return false, err
}
return true, nil
default:
return true, nil
}
}

14
internal/filter/decode_filter_test.go → internal/filter/transfer_filter_test.go
View File

@ -9,24 +9,24 @@ import (
"github.com/zerodha/logf"
)
type DecodeFilterSuite struct {
type TransferFilterSuite struct {
suite.Suite
filter Filter
}
func (s *DecodeFilterSuite) SetupSuite() {
func (s *TransferFilterSuite) SetupSuite() {
logg := logf.New(
logf.Opts{
Level: logf.DebugLevel,
},
)
s.filter = NewDecodeFilter(DecodeFilterOpts{
s.filter = NewTransferFilter(TransferFilterOpts{
Logg: logg,
})
}
func (s *DecodeFilterSuite) TestTranfserInputs() {
func (s *TransferFilterSuite) TestTranfserInputs() {
type testCase struct {
transactionData fetch.Transaction
want bool
@ -66,12 +66,12 @@ func (s *DecodeFilterSuite) TestTranfserInputs() {
}
for _, test := range tests {
next, err := s.filter.Execute(context.Background(), &test.transactionData)
next, err := s.filter.Execute(context.Background(), test.transactionData)
s.NoError(err)
s.Equal(test.want, next)
}
}
func TestDecodeFilterSuite(t *testing.T) {
suite.Run(t, new(DecodeFilterSuite))
func TestTransferFilterSuite(t *testing.T) {
suite.Run(t, new(TransferFilterSuite))
}

2
internal/pipeline/pipeline.go
View File

@ -49,7 +49,7 @@ func (md *Pipeline) Run(ctx context.Context, blockNumber uint64) error {
for _, tx := range fetchResp.Data.Block.Transactions {
for _, filter := range md.filters {
next, err := filter.Execute(ctx, &tx)
next, err := filter.Execute(ctx, tx)
if err != nil {
return err
}

6
internal/syncer/janitor.go
View File

@ -48,20 +48,18 @@ func NewJanitor(o JanitorOpts) *Janitor {
}
func (j *Janitor) Start(ctx context.Context) error {
timer := time.NewTimer(j.sweepInterval)
ticker := time.NewTicker(j.sweepInterval)
for {
select {
case <-ctx.Done():
j.logg.Info("janitor: shutdown signal received")
return nil
case <-timer.C:
case <-ticker.C:
j.logg.Debug("janitor: starting sweep")
if err := j.QueueMissingBlocks(context.Background()); err != nil {
j.logg.Error("janitor: queue missing blocks error", "error", err)
}
timer.Reset(j.sweepInterval)
}
}
}

50
pkg/fetch/benchmark_test.go
View File

@ -1,50 +0,0 @@
package fetch
import (
"context"
"testing"
celo "github.com/grassrootseconomics/cic-celo-sdk"
)
func Benchmark_RPC(b *testing.B) {
celoProvider, err := celo.NewProvider(celo.ProviderOpts{
ChainId: celo.MainnetChainId,
RpcEndpoint: rpcEndpoint,
})
rpc := NewRPCFetcher(RPCOpts{
RPCProvider: celoProvider,
})
if err != nil {
return
}
b.Run("RPC_Block_Fetcher_Benchmark", func(b *testing.B) {
for n := 0; n < b.N; n++ {
_, err := rpc.Block(context.Background(), 14974600)
if err != nil {
b.Fatal(err)
}
}
b.ReportAllocs()
})
}
func Benchmark_GraphQL(b *testing.B) {
graphql := NewGraphqlFetcher(GraphqlOpts{
GraphqlEndpoint: graphqlEndpoint,
})
b.Run("GraphQL_Block_Fetcher_Benchmark", func(b *testing.B) {
for n := 0; n < b.N; n++ {
_, err := graphql.Block(context.Background(), 14974600)
if err != nil {
b.Fatal(err)
}
}
b.ReportAllocs()
})
}

97
pkg/fetch/rpc.go
View File

@ -1,97 +0,0 @@
package fetch
import (
"context"
"math/big"
"strings"
"github.com/celo-org/celo-blockchain/common/hexutil"
"github.com/celo-org/celo-blockchain/core/types"
celo "github.com/grassrootseconomics/cic-celo-sdk"
"github.com/grassrootseconomics/w3-celo-patch/module/eth"
"github.com/grassrootseconomics/w3-celo-patch/w3types"
)
// RPCOpts reprsents the required paramters for an RPC fetcher.
type RPCOpts struct {
RPCProvider *celo.Provider
}
// RPC is a RPC based block and transaction fetcher.
type RPC struct {
provider *celo.Provider
}
// NewRPCFetcher returns a new RPC fetcher which implemnts Fetch.
// Note: No rate limiting feeature.
func NewRPCFetcher(o RPCOpts) Fetch {
return &RPC{
provider: o.RPCProvider,
}
}
// Block fetches via RPC and transforms the response to adapt to the GraphQL JSON response struct.
func (f *RPC) Block(ctx context.Context, blockNumber uint64) (FetchResponse, error) {
var (
block types.Block
fetchResponse FetchResponse
)
if err := f.provider.Client.CallCtx(
ctx,
eth.BlockByNumber(big.NewInt(int64(blockNumber))).Returns(&block),
); err != nil {
return fetchResponse, err
}
txCount := len(block.Transactions())
batchCalls := make([]w3types.Caller, txCount*2)
txs := make([]types.Transaction, txCount)
txsReceipt := make([]types.Receipt, txCount)
// Prepare batch calls.
for i, tx := range block.Transactions() {
batchCalls[i] = eth.Tx(tx.Hash()).Returns(&txs[i])
batchCalls[txCount+i] = eth.TxReceipt(tx.Hash()).Returns(&txsReceipt[i])
}
if err := f.provider.Client.CallCtx(
ctx,
batchCalls...,
); err != nil {
return fetchResponse, err
}
// Transform response and adapt to FetchResponse.
for i := 0; i < txCount; i++ {
var txObject Transaction
txObject.Block.Number = block.NumberU64()
txObject.Block.Timestamp = hexutil.EncodeUint64(block.Time())
from, err := types.Sender(types.LatestSignerForChainID(txs[i].ChainId()), &txs[i])
if err != nil {
return fetchResponse, err
}
txObject.From.Address = strings.ToLower(from.Hex())
// This check ignores contract deployment transactions.
if txs[i].To() != nil {
txObject.To.Address = strings.ToLower(txs[i].To().Hex())
}
txObject.Value = hexutil.EncodeBig(txs[i].Value())
txObject.InputData = hexutil.Encode(txs[i].Data())
txObject.Hash = txsReceipt[i].TxHash.Hex()
txObject.Index = txsReceipt[i].TransactionIndex
txObject.Status = txsReceipt[i].Status
txObject.GasUsed = txsReceipt[i].GasUsed
fetchResponse.Data.Block.Transactions = append(
fetchResponse.Data.Block.Transactions,
txObject,
)
}
return fetchResponse, nil
}

49
pkg/fetch/rpc_test.go
View File

@ -1,49 +0,0 @@
package fetch
import (
"context"
"os"
"testing"
celo "github.com/grassrootseconomics/cic-celo-sdk"
"github.com/stretchr/testify/suite"
)
var (
rpcEndpoint = os.Getenv("TEST_RPC_ENDPOINT")
)
type RPCTestSuite struct {
suite.Suite
fetch Fetch
}
func (s *RPCTestSuite) SetupSuite() {
celoProvider, err := celo.NewProvider(celo.ProviderOpts{
ChainId: celo.MainnetChainId,
RpcEndpoint: rpcEndpoint,
})
if err != nil {
return
}
s.fetch = NewRPCFetcher(RPCOpts{
RPCProvider: celoProvider,
})
}
func (s *RPCTestSuite) Test_E2E_Fetch_Existing_Block() {
resp, err := s.fetch.Block(context.Background(), 14974600)
s.NoError(err)
s.Len(resp.Data.Block.Transactions, 3)
}
func (s *RPCTestSuite) Test_E2E_Fetch_Non_Existing_Block() {
_, err := s.fetch.Block(context.Background(), 14974600000)
s.Error(err)
}
func TestRPCSuite(t *testing.T) {
suite.Run(t, new(RPCTestSuite))
}