add: (feat) balances query api

- add address utils
- return uint64 for balances instead of float

cmd/init.go

@@ -3,8 +3,13 @@ package main
 import (
 	"context"
 	"fmt"
-	"github.com/ethereum/go-ethereum/common"
+	"strings"
+
+	batch_balance "github.com/grassrootseconomics/cic-go/batch_balance"
 	cic_net "github.com/grassrootseconomics/cic-go/net"
+
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/grassrootseconomics/cic-go/provider"
 	"github.com/hibiken/asynq"
 	"github.com/jackc/pgx/v4/pgxpool"
 	"github.com/knadh/koanf"
@@ -12,7 +17,6 @@ import (
 	"github.com/knadh/koanf/providers/env"
 	"github.com/knadh/koanf/providers/file"
 	"github.com/nleof/goyesql"
-	"strings"
 )
 
 type config struct {
@@ -25,8 +29,9 @@ type config struct {
 		Cors    []string `koanf:"cors"`
 	}
 	Chain struct {
-		RpcProvider   string `koanf:"rpc"`
+		RpcProvider     string `koanf:"rpc"`
-		TokenRegistry string `koanf:"index"`
+		TokenRegistry   string `koanf:"index"`
+		BalanceResolver string `koanf:"balances_resolver"`
 	}
 	Syncers map[string]string `koanf:"syncers"`
 }
@@ -67,16 +72,28 @@ func connectDb(dsn string) error {
 	return nil
 }
 
-func parseRedis(dsn string) (asynq.RedisConnOpt, error) {
+func parseRedis(dsn string) error {
-	rconn, err := asynq.ParseRedisURI(dsn)
+	var err error
+	rClient, err = asynq.ParseRedisURI(dsn)
 	if err != nil {
-		return nil, err
+		return err
 	}
 
-	return rconn, nil
+	return nil
 }
 
-func connectCicNet(rpcProvider string, tokenIndex common.Address) error {
+func loadProvider(rpcEndpoint string) error {
+	var err error
+
+	rpcProvider, err = provider.NewRpcProvider(rpcEndpoint)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func loadCicNet(tokenIndex common.Address) error {
 	var err error
 
 	cicnetClient, err = cic_net.NewCicNet(rpcProvider, tokenIndex)
@@ -87,6 +104,17 @@ func connectCicNet(rpcProvider string, tokenIndex common.Address) error {
 	return nil
 }
 
+func loadBatchBalance(balanceResolver common.Address) error {
+	var err error
+
+	batchBalance, err = batch_balance.NewBatchBalance(rpcProvider, balanceResolver)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
 func loadQueries(sqlFilesPath string) error {
 	coreQueries, err := goyesql.ParseFile(fmt.Sprintf("%s/core.sql", sqlFilesPath))
 	if err != nil {

cmd/main.go

@@ -2,17 +2,21 @@ package main
 
 import (
 	"context"
+	"os"
+	"os/signal"
+	"strings"
+	"time"
+
+	batch_balance "github.com/grassrootseconomics/cic-go/batch_balance"
 	cic_net "github.com/grassrootseconomics/cic-go/net"
+	"github.com/grassrootseconomics/cic-go/provider"
+	"github.com/hibiken/asynq"
 	"github.com/jackc/pgx/v4/pgxpool"
 	"github.com/knadh/koanf"
 	"github.com/lmittmann/w3"
 	"github.com/rs/zerolog"
 	"github.com/rs/zerolog/log"
 	"golang.org/x/sys/unix"
-	"os"
-	"os/signal"
-	"strings"
-	"time"
 )
 
 var (
@@ -21,7 +25,10 @@ var (
 	preparedQueries *queries
 	conf            config
 	db              *pgxpool.Pool
+	rpcProvider     *provider.Provider
 	cicnetClient    *cic_net.CicNet
+	batchBalance    *batch_balance.BatchBalance
+	rClient         asynq.RedisConnOpt
 )
 
 func init() {
@@ -39,17 +46,25 @@ func init() {
 		log.Fatal().Err(err).Msg("failed to connect to postgres")
 	}
 
-	if err := connectCicNet(conf.Chain.RpcProvider, w3.A(conf.Chain.TokenRegistry)); err != nil {
+	if err := loadProvider(conf.Chain.RpcProvider); err != nil {
 		log.Fatal().Err(err).Msg("failed to connect to postgres")
 	}
+
+	if err := loadCicNet(w3.A(conf.Chain.TokenRegistry)); err != nil {
+		log.Fatal().Err(err).Msg("failed to connect to postgres")
+	}
+
+	if err := loadBatchBalance(w3.A(conf.Chain.BalanceResolver)); err != nil {
+		log.Fatal().Err(err).Msg("failed to connect to postgres")
+	}
+
+	if err := parseRedis(conf.Db.Redis); err != nil {
+
+		log.Fatal().Err(err).Msg("could not parse redis connection string")
+	}
 }
 
 func main() {
-	rClient, err := parseRedis(conf.Db.Redis)
-	if err != nil {
-		log.Fatal().Err(err).Msg("could not parse redis connection string")
-	}
-
 	scheduler, err := bootstrapScheduler(rClient)
 	if err != nil {
 		log.Fatal().Err(err).Msg("could not bootstrap scheduler")

cmd/server.go

@@ -3,6 +3,7 @@ package main
 import (
 	"cic-dw/internal/dashboard"
 	"cic-dw/internal/public"
+
 	"github.com/labstack/echo/v4"
 	"github.com/labstack/echo/v4/middleware"
 )
@@ -19,7 +20,7 @@ func initHTTPServer() *echo.Echo {
 	}))
 
 	dashboard.InitDashboardApi(server, db, preparedQueries.dashboard)
-	public.InitPublicApi(server, db, preparedQueries.public)
+	public.InitPublicApi(server, db, batchBalance, preparedQueries.public)
 
 	return server
 }

cmd/syncer.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"cic-dw/internal/syncer"
+
 	"github.com/hibiken/asynq"
 	"github.com/rs/zerolog/log"
 )

config.toml

@@ -13,7 +13,7 @@ cors = [
 
 [chain]
 index = "0x5A1EB529438D8b3cA943A45a48744f4c73d1f098"
-balances_resolver = "0x9C48FF0888A747Ba0108E7205Cae2EeB0C76c948"
+balances_resolver = "0xb9e215B789e9Ec6643Ba4ff7b98EA219F38c6fE5"
 rpc   = "http://127.0.0.1:8545"
 
 [syncers]

go.mod

@@ -5,10 +5,12 @@ go 1.18
 require (
 	github.com/ethereum/go-ethereum v1.10.17
 	github.com/georgysavva/scany v0.3.0
-	github.com/grassrootseconomics/cic-go v1.2.0
+	github.com/golang-module/carbon/v2 v2.1.6
+	github.com/grassrootseconomics/cic-go v1.4.1
 	github.com/hibiken/asynq v0.23.0
 	github.com/jackc/pgx/v4 v4.16.1
 	github.com/knadh/koanf v1.4.1
+	github.com/labstack/echo/v4 v4.7.2
 	github.com/lmittmann/w3 v0.7.0
 	github.com/nleof/goyesql v1.0.1
 	github.com/rs/zerolog v1.26.1
@@ -17,29 +19,16 @@ require (
 
 require (
 	github.com/StackExchange/wmi v0.0.0-20180116203802-5d049714c4a6 // indirect
-	github.com/aead/siphash v1.0.1 // indirect
-	github.com/btcsuite/btcd v0.22.1 // indirect
 	github.com/btcsuite/btcd/btcec/v2 v2.2.0 // indirect
-	github.com/btcsuite/btcd/chaincfg/chainhash v1.0.1 // indirect
-	github.com/btcsuite/btclog v0.0.0-20170628155309-84c8d2346e9f // indirect
-	github.com/btcsuite/btcutil v1.0.3-0.20201208143702-a53e38424cce // indirect
-	github.com/btcsuite/go-socks v0.0.0-20170105172521-4720035b7bfd // indirect
-	github.com/btcsuite/goleveldb v1.0.0 // indirect
-	github.com/btcsuite/snappy-go v1.0.0 // indirect
-	github.com/btcsuite/websocket v0.0.0-20150119174127-31079b680792 // indirect
-	github.com/btcsuite/winsvc v1.0.0 // indirect
 	github.com/cespare/xxhash/v2 v2.1.1 // indirect
-	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/deckarep/golang-set v1.8.0 // indirect
 	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.0.1 // indirect
-	github.com/decred/dcrd/lru v1.0.0 // indirect
 	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
 	github.com/fsnotify/fsnotify v1.4.9 // indirect
 	github.com/go-ole/go-ole v1.2.1 // indirect
 	github.com/go-redis/redis/v8 v8.11.2 // indirect
 	github.com/go-stack/stack v1.8.0 // indirect
 	github.com/golang-jwt/jwt v3.2.2+incompatible // indirect
-	github.com/golang-module/carbon/v2 v2.1.6 // indirect
 	github.com/golang/protobuf v1.4.3 // indirect
 	github.com/google/uuid v1.2.0 // indirect
 	github.com/gorilla/websocket v1.4.2 // indirect
@@ -51,10 +40,6 @@ require (
 	github.com/jackc/pgservicefile v0.0.0-20200714003250-2b9c44734f2b // indirect
 	github.com/jackc/pgtype v1.11.0 // indirect
 	github.com/jackc/puddle v1.2.1 // indirect
-	github.com/jessevdk/go-flags v1.4.0 // indirect
-	github.com/jrick/logrotate v1.0.0 // indirect
-	github.com/kkdai/bstream v0.0.0-20161212061736-f391b8402d23 // indirect
-	github.com/labstack/echo/v4 v4.7.2 // indirect
 	github.com/labstack/gommon v0.3.1 // indirect
 	github.com/mattn/go-colorable v0.1.12 // indirect
 	github.com/mattn/go-isatty v0.0.14 // indirect

go.sum

@@ -31,8 +31,6 @@ github.com/StackExchange/wmi v0.0.0-20180116203802-5d049714c4a6 h1:fLjPD/aNc3UIO
 github.com/StackExchange/wmi v0.0.0-20180116203802-5d049714c4a6/go.mod h1:3eOhrUMpNV+6aFIbp5/iudMxNCF27Vw2OZgy4xEx0Fg=
 github.com/VictoriaMetrics/fastcache v1.6.0 h1:C/3Oi3EiBCqufydp1neRZkqcwmEiuRT9c3fqvvgKm5o=
 github.com/VictoriaMetrics/fastcache v1.6.0/go.mod h1:0qHz5QP0GMX4pfmMA/zt5RgfNuXJrTP0zS7DqpHGGTw=
-github.com/aead/siphash v1.0.1 h1:FwHfE/T45KPKYuuSAKyyvE+oPWcaQ+CUmFW0bPlM+kg=
-github.com/aead/siphash v1.0.1/go.mod h1:Nywa3cDsYNNK3gaciGTWPwHt0wlpNV15vwmswBAUSII=
 github.com/ajstarks/svgo v0.0.0-20180226025133-644b8db467af/go.mod h1:K08gAheRH3/J6wwsYMMT4xOr94bZjxIelGM0+d/wbFw=
 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=
@@ -65,32 +63,11 @@ github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+Ce
 github.com/bgentry/speakeasy v0.1.0/go.mod h1:+zsyZBPWlz7T6j88CTgSN5bM796AkVf0kBD4zp0CCIs=
 github.com/bmizerany/pat v0.0.0-20170815010413-6226ea591a40/go.mod h1:8rLXio+WjiTceGBHIoTvn60HIbs7Hm7bcHjyrSqYB9c=
 github.com/boltdb/bolt v1.3.1/go.mod h1:clJnj/oiGkjum5o1McbSZDSLxVThjynRyGBgiAx27Ps=
-github.com/btcsuite/btcd v0.20.1-beta/go.mod h1:wVuoA8VJLEcwgqHBwHmzLRazpKxTv13Px/pDuV7OomQ=
-github.com/btcsuite/btcd v0.22.1 h1:CnwP9LM/M9xuRrGSCGeMVs9iv09uMqwsVX7EeIpgV2c=
-github.com/btcsuite/btcd v0.22.1/go.mod h1:wqgTSL29+50LRkmOVknEdmt8ZojIzhuWvgu/iptuN7Y=
 github.com/btcsuite/btcd/btcec/v2 v2.1.2/go.mod h1:ctjw4H1kknNJmRN4iP1R7bTQ+v3GJkZBd6mui8ZsAZE=
 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 v1.0.0/go.mod h1:7SFka0XMvUgj3hfZtydOrQY2mwhPclbT2snogU7SQQc=
 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/btcsuite/btclog v0.0.0-20170628155309-84c8d2346e9f h1:bAs4lUbRJpnnkd9VhRV3jjAVU7DJVjMaK+IsvSeZvFo=
-github.com/btcsuite/btclog v0.0.0-20170628155309-84c8d2346e9f/go.mod h1:TdznJufoqS23FtqVCzL0ZqgP5MqXbb4fg/WgDys70nA=
-github.com/btcsuite/btcutil v0.0.0-20190425235716-9e5f4b9a998d/go.mod h1:+5NJ2+qvTyV9exUAL/rxXi3DcLg2Ts+ymUAY5y4NvMg=
-github.com/btcsuite/btcutil v1.0.3-0.20201208143702-a53e38424cce h1:YtWJF7RHm2pYCvA5t0RPmAaLUhREsKuKd+SLhxFbFeQ=
-github.com/btcsuite/btcutil v1.0.3-0.20201208143702-a53e38424cce/go.mod h1:0DVlHczLPewLcPGEIeUEzfOJhqGPQ0mJJRDBtD307+o=
-github.com/btcsuite/go-socks v0.0.0-20170105172521-4720035b7bfd h1:R/opQEbFEy9JGkIguV40SvRY1uliPX8ifOvi6ICsFCw=
-github.com/btcsuite/go-socks v0.0.0-20170105172521-4720035b7bfd/go.mod h1:HHNXQzUsZCxOoE+CPiyCTO6x34Zs86zZUiwtpXoGdtg=
-github.com/btcsuite/goleveldb v0.0.0-20160330041536-7834afc9e8cd/go.mod h1:F+uVaaLLH7j4eDXPRvw78tMflu7Ie2bzYOH4Y8rRKBY=
-github.com/btcsuite/goleveldb v1.0.0 h1:Tvd0BfvqX9o823q1j2UZ/epQo09eJh6dTcRp79ilIN4=
-github.com/btcsuite/goleveldb v1.0.0/go.mod h1:QiK9vBlgftBg6rWQIj6wFzbPfRjiykIEhBH4obrXJ/I=
-github.com/btcsuite/snappy-go v0.0.0-20151229074030-0bdef8d06723/go.mod h1:8woku9dyThutzjeg+3xrA5iCpBRH8XEEg3lh6TiUghc=
-github.com/btcsuite/snappy-go v1.0.0 h1:ZxaA6lo2EpxGddsA8JwWOcxlzRybb444sgmeJQMJGQE=
-github.com/btcsuite/snappy-go v1.0.0/go.mod h1:8woku9dyThutzjeg+3xrA5iCpBRH8XEEg3lh6TiUghc=
-github.com/btcsuite/websocket v0.0.0-20150119174127-31079b680792 h1:R8vQdOQdZ9Y3SkEwmHoWBmX1DNXhXZqlTpq6s4tyJGc=
-github.com/btcsuite/websocket v0.0.0-20150119174127-31079b680792/go.mod h1:ghJtEyQwv5/p4Mg4C0fgbePVuGr935/5ddU9Z3TmDRY=
-github.com/btcsuite/winsvc v1.0.0 h1:J9B4L7e3oqhXOcm+2IuNApwzQec85lE+QaikUcCs+dk=
-github.com/btcsuite/winsvc v1.0.0/go.mod h1:jsenWakMcC0zFBFurPLEAyrnc/teJEM1O46fmI40EZs=
 github.com/c-bata/go-prompt v0.2.2/go.mod h1:VzqtzE2ksDBcdln8G7mk2RX9QyGjH+OVqOCSiVIqS34=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/cespare/cp v0.1.0/go.mod h1:SOGHArjBr4JWaSDEVpWpo/hNg6RoKrls6Oh40hiwW+s=
@@ -116,7 +93,6 @@ github.com/creack/pty v1.1.7/go.mod h1:lj5s0c3V2DBrqTV7llrYr5NG6My20zk30Fl46Y7Do
 github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/cyberdelia/templates v0.0.0-20141128023046-ca7fffd4298c/go.mod h1:GyV+0YP4qX0UQ7r2MoYZ+AvYDp12OF5yg4q8rGnyNh4=
 github.com/dave/jennifer v1.2.0/go.mod h1:fIb+770HOpJ2fmN9EPPKOqm1vMGhB+TwXKMZhrIygKg=
-github.com/davecgh/go-spew v0.0.0-20171005155431-ecdeabc65495/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 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=
@@ -126,8 +102,6 @@ github.com/decred/dcrd/crypto/blake256 v1.0.0 h1:/8DMNYp9SGi5f0w7uCm6d6M4OU2rGFK
 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=
-github.com/decred/dcrd/lru v1.0.0 h1:Kbsb1SFDsIlaupWPwsPp+dkxiBY1frcS07PCPgotKz8=
-github.com/decred/dcrd/lru v1.0.0/go.mod h1:mxKOwFd7lFjN2GZYsiz/ecgqR6kkYAl+0pz0tEMk218=
 github.com/deepmap/oapi-codegen v1.6.0/go.mod h1:ryDa9AgbELGeB+YEXE1dR53yAjHwFvE9iAUlWl9Al3M=
 github.com/deepmap/oapi-codegen v1.8.2/go.mod h1:YLgSKSDv/bZQB7N4ws6luhozi3cEdRktEqrX88CvjIw=
 github.com/dgrijalva/jwt-go v3.2.0+incompatible/go.mod h1:E3ru+11k8xSBh+hMPgOLZmtrrCbhqsmaPHjLKYnJCaQ=
@@ -250,8 +224,10 @@ 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-go v1.2.0 h1:edZ9/ugvorSlPK2BbACVcb4q08pcWZhcRFVpp3O0WYc=
+github.com/grassrootseconomics/cic-go v1.4.0 h1:ydGp9pVrAhpq45KUSkPOHjP1PyGlBsRCdWLQy8otmlc=
-github.com/grassrootseconomics/cic-go v1.2.0/go.mod h1:cQcLMsuhCirTVO5ccG37S4pGS1vnkSepoi+eYZvdOEY=
+github.com/grassrootseconomics/cic-go v1.4.0/go.mod h1:cQcLMsuhCirTVO5ccG37S4pGS1vnkSepoi+eYZvdOEY=
+github.com/grassrootseconomics/cic-go v1.4.1 h1:fFthl73ZJydubPOP48nMtDIl0TgvjOXGUMBYn4JXIsI=
+github.com/grassrootseconomics/cic-go v1.4.1/go.mod h1:cQcLMsuhCirTVO5ccG37S4pGS1vnkSepoi+eYZvdOEY=
 github.com/hashicorp/errwrap v1.0.0/go.mod h1:YH+1FKiLXxHSkmPseP+kNlulaMuP3n2brvKWEqk/Jc4=
 github.com/hashicorp/go-bexpr v0.1.10/go.mod h1:oxlubA2vC/gFVfX1A6JGp7ls7uCDlfJn732ehYYg+g0=
 github.com/hashicorp/go-cleanhttp v0.5.0/go.mod h1:JpRdi6/HCYpAwUzNwuwqhbovhLtngrth3wmdIIUrZ80=
@@ -361,9 +337,6 @@ github.com/jackc/puddle v1.2.1 h1:gI8os0wpRXFd4FiAY2dWiqRK037tjj3t7rKFeO4X5iw=
 github.com/jackc/puddle v1.2.1/go.mod h1:m4B5Dj62Y0fbyuIc15OsIqK0+JU8nkqQjsgx7dvjSWk=
 github.com/jackpal/go-nat-pmp v1.0.2/go.mod h1:QPH045xvCAeXUZOxsnwmrtiCoxIr9eob+4orBN1SBKc=
 github.com/jedisct1/go-minisign v0.0.0-20190909160543-45766022959e/go.mod h1:G1CVv03EnqU1wYL2dFwXxW2An0az9JTl/ZsqXQeBlkU=
-github.com/jessevdk/go-flags v0.0.0-20141203071132-1679536dcc89/go.mod h1:4FA24M0QyGHXBuZZK/XkWh8h0e1EYbRYJSGM75WSRxI=
-github.com/jessevdk/go-flags v1.4.0 h1:4IU2WS7AumrZ/40jfhf4QVDMsQwqA7VEHozFRrGARJA=
-github.com/jessevdk/go-flags v1.4.0/go.mod h1:4FA24M0QyGHXBuZZK/XkWh8h0e1EYbRYJSGM75WSRxI=
 github.com/jinzhu/inflection v1.0.0/go.mod h1:h+uFLlag+Qp1Va5pdKtLDYj+kHp5pxUVkryuEj+Srlc=
 github.com/jinzhu/now v1.1.1/go.mod h1:d3SSVoowX0Lcu0IBviAWJpolVfI5UJVZZ7cO71lE/z8=
 github.com/jmespath/go-jmespath v0.4.0/go.mod h1:T8mJZnbsbmF+m6zOOFylbeCJqk5+pHWvzYPziyZiYoo=
@@ -371,8 +344,6 @@ github.com/jmespath/go-jmespath/internal/testify v1.5.1/go.mod h1:L3OGu8Wl2/fWfC
 github.com/jmoiron/sqlx v1.3.1/go.mod h1:2BljVx/86SuTyjE+aPYlHCTNvZrnJXghYGpNiXLBMCQ=
 github.com/joho/godotenv v1.3.0 h1:Zjp+RcGpHhGlrMbJzXTrZZPrWj+1vfm90La1wgB6Bhc=
 github.com/joho/godotenv v1.3.0/go.mod h1:7hK45KPybAkOC6peb+G5yklZfMxEjkZhHbwpqxOKXbg=
-github.com/jrick/logrotate v1.0.0 h1:lQ1bL/n9mBNeIXoTUoYRlK4dHuNJVofX9oWqBtPnSzI=
-github.com/jrick/logrotate v1.0.0/go.mod h1:LNinyqDIJnpAur+b8yyulnQw/wDuN1+BYKlTRt3OuAQ=
 github.com/json-iterator/go v1.1.6/go.mod h1:+SdeFBvtyEkXs7REEP0seUULqWtbJapLOCVDaaPEHmU=
 github.com/jstemmer/go-junit-report v0.0.0-20190106144839-af01ea7f8024/go.mod h1:6v2b51hI/fHJwM22ozAgKL4VKDeJcHhJFhtBdhmNjmU=
 github.com/jstemmer/go-junit-report v0.9.1/go.mod h1:Brl9GWCQeLvo8nXZwPNNblvFj/XSXhF0NWZEnDohbsk=
@@ -384,8 +355,6 @@ github.com/jwilder/encoding v0.0.0-20170811194829-b4e1701a28ef/go.mod h1:Ct9fl0F
 github.com/karalabe/usb v0.0.2/go.mod h1:Od972xHfMJowv7NGVDiWVxk2zxnWgjLlJzE+F4F7AGU=
 github.com/kisielk/errcheck v1.2.0/go.mod h1:/BMXB+zMLi60iA8Vv6Ksmxu/1UDYcXs4uQLJ+jE2L00=
 github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
-github.com/kkdai/bstream v0.0.0-20161212061736-f391b8402d23 h1:FOOIBWrEkLgmlgGfMuZT83xIwfPDxEI2OHu6xUmJMFE=
-github.com/kkdai/bstream v0.0.0-20161212061736-f391b8402d23/go.mod h1:J+Gs4SYgM6CZQHDETBtE9HaSEkGmuNXF86RwHhHUvq4=
 github.com/klauspost/compress v1.4.0/go.mod h1:RyIbtBH6LamlWaDj8nUwkbUhJ87Yi3uG0guNDohfE1A=
 github.com/klauspost/cpuid v0.0.0-20170728055534-ae7887de9fa5/go.mod h1:Pj4uuM528wm8OyEC2QMXAi2YiTZ96dNQPGgoMS4s3ek=
 github.com/klauspost/crc32 v0.0.0-20161016154125-cb6bfca970f6/go.mod h1:+ZoRqAPRLkC4NPOvfYeR5KNOrY6TD+/sAC3HXPZgDYg=
@@ -427,7 +396,6 @@ github.com/mattn/go-colorable v0.1.2/go.mod h1:U0ppj6V5qS13XJ6of8GYAs25YV2eR4EVc
 github.com/mattn/go-colorable v0.1.6/go.mod h1:u6P/XSegPjTcexA+o6vUJrdnUu04hMope9wVRipJSqc=
 github.com/mattn/go-colorable v0.1.7/go.mod h1:u6P/XSegPjTcexA+o6vUJrdnUu04hMope9wVRipJSqc=
 github.com/mattn/go-colorable v0.1.8/go.mod h1:u6P/XSegPjTcexA+o6vUJrdnUu04hMope9wVRipJSqc=
-github.com/mattn/go-colorable v0.1.11 h1:nQ+aFkoE2TMGc0b68U2OKSexC+eq46+XwZzWXHRmPYs=
 github.com/mattn/go-colorable v0.1.11/go.mod h1:u5H1YNBxpqRaxsYJYSkiCWKzEfiAb1Gb520KVy5xxl4=
 github.com/mattn/go-colorable v0.1.12 h1:jF+Du6AlPIjs2BiUiQlKOX0rt3SujHxPnksPKZbaA40=
 github.com/mattn/go-colorable v0.1.12/go.mod h1:u5H1YNBxpqRaxsYJYSkiCWKzEfiAb1Gb520KVy5xxl4=
@@ -479,13 +447,10 @@ github.com/oklog/ulid v1.3.1/go.mod h1:CirwcVhetQ6Lv90oh/F+FBtV6XMibvdAFo93nm5qn
 github.com/olekukonko/tablewriter v0.0.5 h1:P2Ga83D34wi1o9J6Wh1mRuqd4mF/x/lgBS7N7AbDhec=
 github.com/olekukonko/tablewriter v0.0.5/go.mod h1:hPp6KlRPjbx+hW8ykQs1w3UBbZlj6HuIJcUGPhkA7kY=
 github.com/onsi/ginkgo v1.6.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
-github.com/onsi/ginkgo v1.7.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
 github.com/onsi/ginkgo v1.12.1/go.mod h1:zj2OWP4+oCPe1qIXoGWkgMRwljMUYCdkwsT2108oapk=
 github.com/onsi/ginkgo v1.14.0/go.mod h1:iSB4RoI2tjJc9BBv4NKIKWKya62Rps+oPG/Lv9klQyY=
 github.com/onsi/ginkgo v1.15.0 h1:1V1NfVQR87RtWAgp1lv9JZJ5Jap+XFGKPi00andXGi4=
 github.com/onsi/ginkgo v1.15.0/go.mod h1:hF8qUzuuC8DJGygJH3726JnCZX4MYbRB8yFfISqnKUg=
-github.com/onsi/gomega v1.4.1/go.mod h1:C1qb7wdrVGGVU+Z6iS04AVkA3Q65CEZX59MT0QO5uiA=
-github.com/onsi/gomega v1.4.3/go.mod h1:ex+gbHU/CVuBBDIJjb2X0qEXbFg53c61hWP/1CpauHY=
 github.com/onsi/gomega v1.7.1/go.mod h1:XdKZgCCFLUoM/7CFJVPcG8C1xQ1AJ0vpAezJrB7JYyY=
 github.com/onsi/gomega v1.10.1/go.mod h1:iN09h71vgCQne3DLsj+A5owkum+a2tYe+TOCB1ybHNo=
 github.com/onsi/gomega v1.10.5 h1:7n6FEkpFmfCoo2t+YYqXH0evK+a9ICQz0xcAy9dYcaQ=
@@ -609,7 +574,6 @@ go.uber.org/tools v0.0.0-20190618225709-2cfd321de3ee/go.mod h1:vJERXedbb3MVM5f9E
 go.uber.org/zap v1.9.1/go.mod h1:vwi/ZaCAaUcBkycHslxD9B2zi4UTXhF60s6SWpuDF0Q=
 go.uber.org/zap v1.10.0/go.mod h1:vwi/ZaCAaUcBkycHslxD9B2zi4UTXhF60s6SWpuDF0Q=
 go.uber.org/zap v1.13.0/go.mod h1:zwrFLgMcdUuIBviXEYEH1YKNaOBnKXsx2IPda5bBwHM=
-golang.org/x/crypto v0.0.0-20170930174604-9419663f5a44/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 golang.org/x/crypto v0.0.0-20180904163835-0709b304e793/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20190411191339-88737f569e3a/go.mod h1:WFFai1msRO1wXaEeE5yQxYXgSfI8pQAWXbQop6sCtWE=
@@ -619,7 +583,6 @@ golang.org/x/crypto v0.0.0-20190820162420-60c769a6c586/go.mod h1:yigFU9vqHzYiE8U
 golang.org/x/crypto v0.0.0-20190909091759-094676da4a83/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20190911031432-227b76d455e7/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
-golang.org/x/crypto v0.0.0-20200115085410-6d4e4cb37c7d/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20200323165209-0ec3e9974c59/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20200820211705-5c72a883971a/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
@@ -629,8 +592,6 @@ golang.org/x/crypto v0.0.0-20210322153248-0c34fe9e7dc2/go.mod h1:T9bdIzuCu7OtxOm
 golang.org/x/crypto v0.0.0-20210616213533-5ff15b29337e/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
 golang.org/x/crypto v0.0.0-20210711020723-a769d52b0f97/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
 golang.org/x/crypto v0.0.0-20211215165025-cf75a172585e/go.mod h1:P+XmwS30IXTQdn5tA2iutPOUgjI07+tq3H3K9MVA1s8=
-golang.org/x/crypto v0.0.0-20220427172511-eb4f295cb31f h1:OeJjE6G4dgCY4PIXvIRQbE8+RX+uXZyGhUy/ksMGJoc=
-golang.org/x/crypto v0.0.0-20220427172511-eb4f295cb31f/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
 golang.org/x/crypto v0.0.0-20220511200225-c6db032c6c88 h1:Tgea0cVUD0ivh5ADBX4WwuI12DUd2to3nCYe2eayMIw=
 golang.org/x/crypto v0.0.0-20220511200225-c6db032c6c88/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
 golang.org/x/exp v0.0.0-20180321215751-8460e604b9de/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
@@ -661,7 +622,6 @@ golang.org/x/mod v0.1.0/go.mod h1:0QHyrYULN0/3qlju5TqG8bIK38QM8yzMo5ekMj3DlcY=
 golang.org/x/mod v0.1.1-0.20191105210325-c90efee705ee/go.mod h1:QqPTAvyqsEbceGzBzNggFXnrqF1CaUcvgkdR5Ot7KZg=
 golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.4.2/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
-golang.org/x/net v0.0.0-20180719180050-a680a1efc54d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
@@ -689,8 +649,6 @@ golang.org/x/net v0.0.0-20210220033124-5f55cee0dc0d/go.mod h1:m0MpNAwzfU5UDzcl9v
 golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/net v0.0.0-20210610132358-84b48f89b13b/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/net v0.0.0-20210805182204-aaa1db679c0d/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
-golang.org/x/net v0.0.0-20211112202133-69e39bad7dc2 h1:CIJ76btIcR3eFI5EgSo6k1qKw9KJexJuRLI9G7Hp5wE=
-golang.org/x/net v0.0.0-20211112202133-69e39bad7dc2/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/net v0.0.0-20220425223048-2871e0cb64e4 h1:HVyaeDAYux4pnY+D/SiwmLOR36ewZ4iGQIIrtnuCjFA=
 golang.org/x/net v0.0.0-20220425223048-2871e0cb64e4/go.mod h1:CfG3xpIq0wQ8r1q4Su4UZFWDARRcnwPjda9FqA0JpMk=
 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
@@ -773,7 +731,6 @@ golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
 golang.org/x/time v0.0.0-20181108054448-85acf8d2951c/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20190308202827-9d24e82272b4/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20201208040808-7e3f01d25324/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
-golang.org/x/time v0.0.0-20210220033141-f8bda1e9f3ba h1:O8mE0/t419eoIwhTFpKVkHiTs/Igowgfkj25AcZrtiE=
 golang.org/x/time v0.0.0-20210220033141-f8bda1e9f3ba/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20220411224347-583f2d630306 h1:+gHMid33q6pen7kv9xvT+JRinntgeXO2AeZVd0AWD3w=
 golang.org/x/time v0.0.0-20220411224347-583f2d630306/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=

internal/public/api.go

@@ -1,6 +1,7 @@
 package public
 
 import (
+	batch_balance "github.com/grassrootseconomics/cic-go/batch_balance"
 	"github.com/jackc/pgx/v4/pgxpool"
 	"github.com/labstack/echo/v4"
 	"github.com/nleof/goyesql"
@@ -9,9 +10,10 @@ import (
 type api struct {
 	db *pgxpool.Pool
 	q  goyesql.Queries
+	c  *batch_balance.BatchBalance
 }
 
-func InitPublicApi(e *echo.Echo, db *pgxpool.Pool, queries goyesql.Queries) {
+func InitPublicApi(e *echo.Echo, db *pgxpool.Pool, batchBalance *batch_balance.BatchBalance, queries goyesql.Queries) {
 	g := e.Group("/public")
 
 	g.Use(func(next echo.HandlerFunc) echo.HandlerFunc {
@@ -19,6 +21,7 @@ func InitPublicApi(e *echo.Echo, db *pgxpool.Pool, queries goyesql.Queries) {
 			c.Set("api", &api{
 				db: db,
 				q:  queries,
+				c:  batchBalance,
 			})
 			return next(c)
 		}

internal/public/balances.go

@@ -1,12 +1,21 @@
 package public
 
 import (
+	"cic-dw/pkg/address"
 	"context"
+	"net/http"
+
+	"github.com/ethereum/go-ethereum/common"
 	"github.com/georgysavva/scany/pgxscan"
 	"github.com/labstack/echo/v4"
-	"net/http"
+	"github.com/lmittmann/w3"
 )
 
+type balanceRes struct {
+	TokenSymbol string `json:"symbol"`
+	Balance     int64  `json:"balance"`
+}
+
 type dbRes struct {
 	TokenSymbol  string `db:"token_symbol"`
 	TokenAddress string `db:"token_address"`
@@ -14,11 +23,19 @@ type dbRes struct {
 
 func handleBalancesQuery(c echo.Context) error {
 	var (
-		api  = c.Get("api").(*api)
+		api            = c.Get("api").(*api)
-		data []dbRes
+		data           []dbRes
+		tokenAddresses []common.Address
+		res            []balanceRes
 	)
 
-	rows, err := api.db.Query(context.Background(), api.q["all-known-tokens"], c.Param("address"))
+	// TODO: return 400
+	qAddress, err := address.SarafuAddress(c.Param("address"))
+	if err != nil {
+		return err
+	}
+
+	rows, err := api.db.Query(context.Background(), api.q["all-known-tokens"], qAddress)
 	if err != nil {
 		return err
 	}
@@ -27,5 +44,23 @@ func handleBalancesQuery(c echo.Context) error {
 		return err
 	}
 
-	return c.JSON(http.StatusOK, data)
+	for _, rowData := range data {
+		tokenAddresses = append(tokenAddresses, w3.A(address.Checksum(rowData.TokenAddress)))
+	}
+
+	balances, err := api.c.TokensBalance(context.Background(), w3.A(address.Checksum(qAddress)), tokenAddresses)
+	if err != nil {
+		return err
+	}
+
+	for i, balance := range balances {
+		var d balanceRes
+
+		d.Balance = balance.Int64()
+		d.TokenSymbol = data[i].TokenSymbol
+
+		res = append(res, d)
+	}
+
+	return c.JSON(http.StatusOK, res)
 }

internal/syncer/token.go

@@ -2,34 +2,36 @@ package syncer
 
 import (
 	"context"
+	"math/big"
+	"strconv"
+
 	"github.com/georgysavva/scany/pgxscan"
 	"github.com/hibiken/asynq"
 	"github.com/jackc/pgx/v4"
 	"github.com/lmittmann/w3"
 	"github.com/rs/zerolog/log"
-	"math/big"
-	"strconv"
 )
 
 type tokenCursor struct {
-	cursorPos string `db:"cursor_pos"`
+	CursorPos string `db:"cursor_pos"`
 }
 
 func (s *Syncer) TokenSyncer(ctx context.Context, t *asynq.Task) error {
 	var lastCursor tokenCursor
 
 	if err := pgxscan.Get(ctx, s.db, &lastCursor, s.queries["cursor-pos"], 3); err != nil {
+		log.Err(err).Msg("pgxscan: token syncer task failed")
 		return err
 	}
 	latestChainIdx, err := s.cicnetClient.EntryCount(ctx)
 	if err != nil {
-		log.Err(err).Msg("token syncer task failed")
+		log.Err(err).Msg("cicnet: token syncer task failed")
 		return err
 	}
 
-	lastCursorPos, err := strconv.ParseInt(lastCursor.cursorPos, 10, 64)
+	lastCursorPos, err := strconv.ParseInt(lastCursor.CursorPos, 10, 64)
 	if err != nil {
-		log.Err(err).Msg("token syncer task failed")
+		log.Err(err).Msg("parse: token syncer task failed")
 		return err
 	}
 

pkg/address/address.go

@@ -0,0 +1,45 @@
+package address
+
+import (
+	"encoding/hex"
+	"fmt"
+	"strconv"
+	"strings"
+
+	"golang.org/x/crypto/sha3"
+)
+
+func SarafuAddress(address string) (string, error) {
+	l := len(address)
+
+	if l < 40 || l > 42 {
+		return "", fmt.Errorf("%s is not a valid eth address", address)
+	}
+
+	if len(address) == 42 {
+		return strings.ToLower(address)[2:], nil
+	}
+
+	return strings.ToLower(address), nil
+}
+
+func Checksum(address string) string {
+	address = strings.ToLower(address)
+	address = strings.Replace(address, "0x", "", 1)
+
+	sha := sha3.NewLegacyKeccak256()
+	sha.Write([]byte(address))
+	hash := sha.Sum(nil)
+	hashstr := hex.EncodeToString(hash)
+	result := []string{"0x"}
+	for i, v := range address {
+		res, _ := strconv.ParseInt(string(hashstr[i]), 16, 64)
+		if res > 7 {
+			result = append(result, strings.ToUpper(string(v)))
+			continue
+		}
+		result = append(result, string(v))
+	}
+
+	return strings.Join(result, "")
+}