fix: add checksum address to event, use stdlib json, load addresses from ko

.env.example

@@ -1,5 +1,9 @@
 EVENTS_CHAIN__GRAPHQL_ENDPOINT=
 EVENTS_CHAIN__WS_ENDPOINT=
+EVENTS_CHAIN__SYSTEM_ADDRESS=
+EVENTS_CHAIN__TOKEN_INDEX_ADDRESS=
+EVENTS_CHAIN__GAS_FAUCET_ADDRESS=
+EVENTS_CHAIN__USER_INDEX_ADDRESS=
 EVENTS_SYNCER__INITIAL_LOWER_BOUND=
 EVENTS_POSTGRES__DSN=
 EVENTS_JETSTREAM__ENDPOINT=

cmd/service/filters.go

@@ -9,7 +9,7 @@ import (
 )
 
 var (
-	systemAddress = strings.ToLower("0x3D85285e39f05773aC92EAD27CB50a4385A529E4")
+	systemAddress = ko.MustString("chain.system_address")
 )
 
 func initAddressFilter() filter.Filter {
@@ -17,14 +17,14 @@ func initAddressFilter() filter.Filter {
 	// TODO: Add route to update cache
 	cache := &sync.Map{}
 
-	// Example bootstrap addresses
+	cache.Store(strings.ToLower(ko.MustString("chain.token_index_address")), "TokenIndex")
-	cache.Store(strings.ToLower("0xB92463E2262E700e29c16416270c9Fdfa17934D7"), "TRNVoucher")
+	cache.Store(strings.ToLower(ko.MustString("chain.gas_faucet_address")), "GasFaucet")
-	cache.Store(strings.ToLower("0xf2a1fc19Ad275A0EAe3445798761FeD1Eea725d5"), "GasFaucet")
+	cache.Store(strings.ToLower(ko.MustString("chain.user_index_address")), "UserIndex")
-	cache.Store(strings.ToLower("0x1e041282695C66944BfC53cabce947cf35CEaf87"), "AddressIndex")
 
 	return filter.NewAddressFilter(filter.AddressFilterOpts{
 		Cache: cache,
 		Logg:  lo,
+		// TODO: Temporary shortcut
 		SystemAddress: systemAddress,
 	})
 }

config.toml

@@ -11,6 +11,10 @@ address = ":5000"
 [chain]
 graphql_endpoint    = ""
 ws_endpoint         = ""
+system_address      = ""
+token_index_address = ""
+gas_faucet_address  = ""
+user_index_address  = ""
 
 # Syncer configs
 [syncer]

go.mod

@@ -6,7 +6,7 @@ require (
 	github.com/VictoriaMetrics/metrics v1.23.1
 	github.com/alitto/pond v1.8.3
 	github.com/celo-org/celo-blockchain v1.7.2
-	github.com/goccy/go-json v0.10.0
+	github.com/grassrootseconomics/celoutils v1.1.1
 	github.com/grassrootseconomics/w3-celo-patch v0.2.0
 	github.com/jackc/pgx/v5 v5.3.1
 	github.com/jackc/tern/v2 v2.0.1

go.sum

@@ -200,8 +200,6 @@ github.com/go-sql-driver/mysql v1.4.1/go.mod h1:zAC/RDZ24gD3HViQzih4MyKcchzm+sOG
 github.com/go-stack/stack v1.8.0 h1:5SgMzNM5HxrEjV0ww2lTmX6E2Izsfxas4+YHWRs3Lsk=
 github.com/go-stack/stack v1.8.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/melR3HDY=
 github.com/go-test/deep v1.0.2-0.20181118220953-042da051cf31/go.mod h1:wGDj63lr65AM2AQyKZd/NYHGb0R+1RLqB8NKt3aSFNA=
-github.com/goccy/go-json v0.10.0 h1:mXKd9Qw4NuzShiRlOXKews24ufknHO7gx30lsDyokKA=
-github.com/goccy/go-json v0.10.0/go.mod h1:6MelG93GURQebXPDq3khkgXZkazVtN9CRI+MGFi0w8I=
 github.com/godbus/dbus/v5 v5.0.4/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5xrFpKfA=
 github.com/gofrs/uuid v3.3.0+incompatible/go.mod h1:b2aQJv3Z4Fp6yNu3cdSllBxTCLRxnplIgP/c0N/04lM=
 github.com/gogo/protobuf v1.1.1/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
@@ -269,6 +267,8 @@ 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/celoutils v1.1.1 h1:REsndvfBkPN8UKOoQFNEGm/sCwKtTm+woYtgMl3bfZ0=
+github.com/grassrootseconomics/celoutils v1.1.1/go.mod h1:Uo5YRy6AGLAHDZj9jaOI+AWoQ1H3L0v79728pPMkm9Q=
 github.com/grassrootseconomics/w3-celo-patch v0.2.0 h1:YqibbPzX0tQKmxU1nUGzThPKk/fiYeYZY6Aif3eyu8U=
 github.com/grassrootseconomics/w3-celo-patch v0.2.0/go.mod h1:WhBXNzNIvHmS6B2hAeShs56oa9Azb4jQSrOMKuMdBWw=
 github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0/go.mod h1:8NvIoxWQoOIhqOTXgfV/d3M/q6VIi02HzZEHgUlZvzk=

internal/filter/address_filter.go

@@ -30,7 +30,7 @@ func NewAddressFilter(o AddressFilterOpts) Filter {
 	}
 }
 
-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
 	}

internal/filter/address_filter_test.go

@@ -58,7 +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)
 	}

internal/filter/filter.go

@@ -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)
 }

internal/filter/gas_filter.go

@@ -4,6 +4,7 @@ import (
 	"context"
 
 	"github.com/celo-org/celo-blockchain/common/hexutil"
+	"github.com/grassrootseconomics/celoutils"
 	"github.com/grassrootseconomics/cic-chain-events/internal/pub"
 	"github.com/grassrootseconomics/cic-chain-events/pkg/fetch"
 	"github.com/zerodha/logf"
@@ -35,7 +36,7 @@ func NewGasFilter(o GasFilterOpts) Filter {
 	}
 }
 
-func (f *GasFilter) Execute(_ context.Context, transaction fetch.Transaction) (bool, error) {
+func (f *GasFilter) Execute(_ context.Context, transaction *fetch.Transaction) (bool, error) {
 	transferValue, err := hexutil.DecodeUint64(transaction.Value)
 	if err != nil {
 		return false, err
@@ -45,7 +46,7 @@ func (f *GasFilter) Execute(_ context.Context, transaction fetch.Transaction) (b
 	if transaction.From.Address == f.systemAddress && transferValue > 0 {
 		transferEvent := &pub.MinimalTxInfo{
 			Block:   transaction.Block.Number,
-			To:      transaction.To.Address,
+			To:      celoutils.ChecksumAddress(transaction.To.Address),
 			TxHash:  transaction.Hash,
 			TxIndex: transaction.Index,
 			Value:   transferValue,

internal/filter/register_filter.go

@@ -4,6 +4,7 @@ import (
 	"context"
 
 	"github.com/celo-org/celo-blockchain/common"
+	"github.com/grassrootseconomics/celoutils"
 	"github.com/grassrootseconomics/cic-chain-events/internal/pub"
 	"github.com/grassrootseconomics/cic-chain-events/pkg/fetch"
 	"github.com/grassrootseconomics/w3-celo-patch"
@@ -37,7 +38,7 @@ func NewRegisterFilter(o RegisterFilterOpts) Filter {
 	}
 }
 
-func (f *RegisterFilter) Execute(_ context.Context, transaction fetch.Transaction) (bool, error) {
+func (f *RegisterFilter) Execute(_ context.Context, transaction *fetch.Transaction) (bool, error) {
 	if len(transaction.InputData) < 10 {
 		return true, nil
 	}
@@ -52,7 +53,7 @@ func (f *RegisterFilter) Execute(_ context.Context, transaction fetch.Transactio
 		addEvent := &pub.MinimalTxInfo{
 			Block:           transaction.Block.Number,
 			ContractAddress: transaction.To.Address,
-			To:              transaction.To.Address,
+			To:              celoutils.ChecksumAddress(transaction.To.Address),
 			TxHash:          transaction.Hash,
 			TxIndex:         transaction.Index,
 		}

internal/filter/transfer_filter.go

@@ -5,6 +5,7 @@ import (
 	"math/big"
 
 	"github.com/celo-org/celo-blockchain/common"
+	"github.com/grassrootseconomics/celoutils"
 	"github.com/grassrootseconomics/cic-chain-events/internal/pub"
 	"github.com/grassrootseconomics/cic-chain-events/pkg/fetch"
 	"github.com/grassrootseconomics/w3-celo-patch"
@@ -40,7 +41,7 @@ func NewTransferFilter(o TransferFilterOpts) Filter {
 	}
 }
 
-func (f *TransferFilter) Execute(_ context.Context, transaction fetch.Transaction) (bool, error) {
+func (f *TransferFilter) Execute(_ context.Context, transaction *fetch.Transaction) (bool, error) {
 	if len(transaction.InputData) < 10 {
 		return true, nil
 	}
@@ -60,7 +61,7 @@ func (f *TransferFilter) Execute(_ context.Context, transaction fetch.Transactio
 
 		transferEvent := &pub.MinimalTxInfo{
 			Block:           transaction.Block.Number,
-			From:            transaction.From.Address,
+			From:            celoutils.ChecksumAddress(transaction.From.Address),
 			To:              to.Hex(),
 			ContractAddress: transaction.To.Address,
 			TxHash:          transaction.Hash,
@@ -131,7 +132,7 @@ func (f *TransferFilter) Execute(_ context.Context, transaction fetch.Transactio
 
 		transferEvent := &pub.MinimalTxInfo{
 			Block:           transaction.Block.Number,
-			From:            transaction.From.Address,
+			From:            celoutils.ChecksumAddress(transaction.From.Address),
 			To:              to.Hex(),
 			ContractAddress: transaction.To.Address,
 			TxHash:          transaction.Hash,

internal/filter/transfer_filter_test.go

@@ -66,7 +66,7 @@ func (s *TransferFilterSuite) 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)
 	}

internal/pipeline/pipeline.go

@@ -51,7 +51,7 @@ 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
 			}

internal/pub/jetstream.go

@@ -1,9 +1,9 @@
 package pub
 
 import (
+	"encoding/json"
 	"time"
 
-	"github.com/goccy/go-json"
 	"github.com/nats-io/nats.go"
 )
 

pkg/fetch/graphql.go

@@ -3,11 +3,10 @@ package fetch
 import (
 	"bytes"
 	"context"
+	"encoding/json"
 	"fmt"
 	"net/http"
 	"time"
-
-	"github.com/goccy/go-json"
 )
 
 const (
@@ -26,6 +25,11 @@ type Graphql struct {
 func NewGraphqlFetcher(o GraphqlOpts) Fetch {
 	return &Graphql{
 		httpClient: &http.Client{
+			Transport: &http.Transport{
+				MaxIdleConns:        100,
+				MaxIdleConnsPerHost: 100,
+				IdleConnTimeout:     60 * time.Second,
+			},
 			Timeout: time.Second * 5,
 		},
 		graphqlEndpoint: o.GraphqlEndpoint,
@@ -33,28 +37,26 @@ func NewGraphqlFetcher(o GraphqlOpts) Fetch {
 }
 
 func (f *Graphql) Block(ctx context.Context, blockNumber uint64) (FetchResponse, error) {
-	var (
+	fetchResponse := FetchResponse{}
-		fetchResponse FetchResponse
-	)
 
 	req, err := http.NewRequestWithContext(ctx, http.MethodPost, f.graphqlEndpoint, bytes.NewBufferString(fmt.Sprintf(graphqlQuery, blockNumber)))
 	if err != nil {
-		return FetchResponse{}, err
+		return fetchResponse, err
 	}
 	req.Header.Set("Content-Type", "application/json")
 
 	resp, err := f.httpClient.Do(req)
 	if err != nil {
-		return FetchResponse{}, err
+		return fetchResponse, err
-	}
-
-	if resp.StatusCode >= http.StatusBadRequest {
-		return FetchResponse{}, fmt.Errorf("error fetching block %s", resp.Status)
 	}
 	defer resp.Body.Close()
 
+	if resp.StatusCode >= http.StatusBadRequest {
+		return fetchResponse, fmt.Errorf("error fetching block %s", resp.Status)
+	}
+
 	if err := json.NewDecoder(resp.Body).Decode(&fetchResponse); err != nil {
-		return FetchResponse{}, err
+		return fetchResponse, err
 	}
 
 	return fetchResponse, nil