refactor: breaking API changes

Squashed commit of the following:

commit 05e1396121
Author: Mohammed Sohail <sohailsameja@gmail.com>
Date:   Wed Feb 15 10:03:44 2023 +0300

    feat: add status types to dispatcher

commit 397cd78ca9
Author: Mohammed Sohail <sohailsameja@gmail.com>
Date:   Wed Feb 15 09:39:31 2023 +0300

    deps: bump -> cic-celo-sdk

commit f2ba079232
Author: Mohammed Sohail <sohailsameja@gmail.com>
Date:   Sun Feb 12 16:53:53 2023 +0300

    snapshot: 12-ebening

commit 4f7909e4ee
Author: Mohammed Sohail <sohailsameja@gmail.com>
Date:   Sun Feb 12 12:50:43 2023 +0300

    xnapshot: 12-02

commit 773474cad9
Author: Mohammed Sohail <sohailsameja@gmail.com>
Date:   Thu Feb 9 14:23:37 2023 +0300

    update: deps initializers

commit 8a0880fcfc
Author: Mohammed Sohail <sohailsameja@gmail.com>
Date:   Thu Feb 9 10:42:15 2023 +0300

    wip: refactor taskers

commit 8676450122
Author: Mohammed Sohail <sohailsameja@gmail.com>
Date:   Fri Feb 3 12:29:27 2023 +0300

    refactor: decouple sql queries, remove transfer

    * add inline docs
    * removed transfer taks in prep for re-write

commit b4c09cd11a
Author: Mohammed Sohail <sohailsameja@gmail.com>
Date:   Thu Feb 2 12:29:43 2023 +0000

    refactor: cmd/service/* and api

cmd/init_api.go

@@ -1,43 +0,0 @@
-package main
-
-import (
-	"net/http"
-
-	"github.com/arl/statsviz"
-	"github.com/go-playground/validator"
-	"github.com/grassrootseconomics/cic-custodial/internal/api"
-	"github.com/labstack/echo/v4"
-)
-
-func initApiServer() *echo.Echo {
-	lo.Debug("bootstrapping api server")
-	server := echo.New()
-	server.HideBanner = true
-	server.HidePort = true
-
-	if ko.Bool("service.statsviz_debug") {
-		lo.Debug("Starting stats_viz at /debug/statsviz")
-		statsVizMux := http.NewServeMux()
-		_ = statsviz.Register(statsVizMux)
-		server.GET("/debug/statsviz/", echo.WrapHandler(statsVizMux))
-		server.GET("/debug/statsviz/*", echo.WrapHandler(statsVizMux))
-	}
-
-	server.Validator = &api.CustomValidator{
-		Validator: validator.New(),
-	}
-
-	apiRoute := server.Group("/api")
-
-	apiRoute.POST("/register", api.RegistrationHandler(
-		taskerClient,
-		postgresKeystore,
-	))
-
-	apiRoute.POST("/transfer", api.TransferHandler(
-		taskerClient,
-	))
-
-	lo.Debug("Registered all api handlers")
-	return server
-}

cmd/init_core.go

@@ -1,144 +0,0 @@
-package main
-
-import (
-	"strings"
-	"time"
-
-	"github.com/bsm/redislock"
-	celo "github.com/grassrootseconomics/cic-celo-sdk"
-	"github.com/grassrootseconomics/cic-custodial/internal/keystore"
-	"github.com/grassrootseconomics/cic-custodial/internal/nonce"
-	"github.com/grassrootseconomics/cic-custodial/internal/tasker"
-	"github.com/grassrootseconomics/cic-custodial/pkg/logg"
-	"github.com/grassrootseconomics/cic-custodial/pkg/postgres"
-	"github.com/grassrootseconomics/cic-custodial/pkg/redis"
-	"github.com/jackc/pgx/v5/pgxpool"
-	"github.com/knadh/koanf"
-	"github.com/knadh/koanf/parsers/toml"
-	"github.com/knadh/koanf/providers/env"
-	"github.com/knadh/koanf/providers/file"
-	"github.com/zerodha/logf"
-)
-
-func initConfig(configFilePath string) *koanf.Koanf {
-	var (
-		ko = koanf.New(".")
-	)
-
-	confFile := file.Provider(configFilePath)
-	if err := ko.Load(confFile, toml.Parser()); err != nil {
-		lo.Fatal("Could not load config file", "error", err)
-	}
-
-	if err := ko.Load(env.Provider("", ".", func(s string) string {
-		return strings.ReplaceAll(strings.ToLower(
-			strings.TrimPrefix(s, "")), "_", ".")
-	}), nil); err != nil {
-		lo.Fatal("Could not override config from env vars", "error", err)
-	}
-
-	return ko
-}
-
-func initLogger(debug bool) logf.Logger {
-	loggOpts := logg.LoggOpts{
-		Color: true,
-	}
-
-	if debug {
-		loggOpts.Caller = true
-		loggOpts.Debug = true
-	}
-
-	return logg.NewLogg(loggOpts)
-}
-
-func initCeloProvider() *celo.Provider {
-	providerOpts := celo.ProviderOpts{
-		RpcEndpoint: ko.MustString("chain.rpc_endpoint"),
-	}
-
-	if ko.Bool("chain.testnet") {
-		providerOpts.ChainId = celo.TestnetChainId
-	} else {
-		providerOpts.ChainId = celo.MainnetChainId
-	}
-
-	provider, err := celo.NewProvider(providerOpts)
-	if err != nil {
-		lo.Fatal("initChainProvider", "error", err)
-	}
-
-	return provider
-}
-
-func initPostgresPool() *pgxpool.Pool {
-	poolOpts := postgres.PostgresPoolOpts{
-		DSN: ko.MustString("postgres.dsn"),
-	}
-
-	pool, err := postgres.NewPostgresPool(poolOpts)
-	if err != nil {
-		lo.Fatal("initPostgresPool", "error", err)
-	}
-
-	return pool
-}
-
-func initKeystore() keystore.Keystore {
-	keystore, err := keystore.NewPostgresKeytore(keystore.Opts{
-		PostgresPool: postgresPool,
-		Logg:         lo,
-	})
-	if err != nil {
-		lo.Fatal("initKeystore", "error", err)
-	}
-
-	return keystore
-}
-
-func initAsynqRedisPool() *redis.RedisPool {
-	poolOpts := redis.RedisPoolOpts{
-		DSN:          ko.MustString("asynq.dsn"),
-		MinIdleConns: ko.MustInt("redis.minconn"),
-	}
-
-	pool, err := redis.NewRedisPool(poolOpts)
-	if err != nil {
-		lo.Fatal("initAsynqRedisPool", "error", err)
-	}
-
-	return pool
-}
-
-func initCommonRedisPool() *redis.RedisPool {
-	poolOpts := redis.RedisPoolOpts{
-		DSN:          ko.MustString("redis.dsn"),
-		MinIdleConns: ko.MustInt("redis.minconn"),
-	}
-
-	pool, err := redis.NewRedisPool(poolOpts)
-	if err != nil {
-		lo.Fatal("initCommonRedisPool", "error", err)
-	}
-
-	return pool
-}
-
-func initRedisNoncestore() nonce.Noncestore {
-	return nonce.NewRedisNoncestore(nonce.Opts{
-		RedisPool:     commonRedisPool,
-		ChainProvider: celoProvider,
-	})
-}
-
-func initLockProvider() *redislock.Client {
-	return redislock.New(commonRedisPool.Client)
-}
-
-func initTaskerClient() *tasker.TaskerClient {
-	return tasker.NewTaskerClient(tasker.TaskerClientOpts{
-		RedisPool:     asynqRedisPool,
-		TaskRetention: time.Hour * 12,
-	})
-}

cmd/init_system.go

@@ -1,58 +0,0 @@
-package main
-
-import (
-	"context"
-	"crypto/ecdsa"
-	"math/big"
-	"time"
-
-	eth_crypto "github.com/celo-org/celo-blockchain/crypto"
-	"github.com/grassrootseconomics/cic-custodial/internal/tasker"
-	"github.com/grassrootseconomics/w3-celo-patch"
-)
-
-func initSystemContainer() *tasker.SystemContainer {
-	return &tasker.SystemContainer{
-		Abis:                  initAbis(),
-		GasRefillThreshold:    big.NewInt(ko.MustInt64("system.gas_refill_threshold")),
-		GasRefillValue:        big.NewInt(ko.MustInt64("system.gas_refill_value")),
-		GiftableGasValue:      big.NewInt(ko.MustInt64("system.giftable_gas_value")),
-		GiftableToken:         w3.A(ko.MustString("system.giftable_token_address")),
-		GiftableTokenValue:    big.NewInt(ko.MustInt64("system.giftable_token_value")),
-		LockPrefix:            ko.MustString("system.lock_prefix"),
-		LockTimeout:           1 * time.Second,
-		PrivateKey:            initSystemKey(),
-		PublicKey:             ko.MustString("system.public_key"),
-		TokenDecimals:         ko.MustInt("system.token_decimals"),
-		TokenTransferGasLimit: uint64(ko.MustInt64("system.token_transfer_gas_limit")),
-	}
-}
-
-func initAbis() map[string]*w3.Func {
-	return map[string]*w3.Func{
-		"mint":     w3.MustNewFunc("mint(address,uint256)", ""),
-		"transfer": w3.MustNewFunc("transfer(address,uint256)", "bool"),
-	}
-}
-
-func initSystemKey() *ecdsa.PrivateKey {
-	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
-	defer cancel()
-
-	currentSystemNonce, err := redisNoncestore.Peek(ctx, ko.MustString("system.public_key"))
-	lo.Debug("initNoncestore: loaded (noncestore) system nonce", "nonce", currentSystemNonce)
-	if err != nil {
-		nonce, err := redisNoncestore.SyncNetworkNonce(ctx, ko.MustString("system.public_key"))
-		lo.Debug("initNoncestore: syncing system nonce", "nonce", nonce)
-		if err != nil {
-			lo.Fatal("initNonceStore", "error", "system account nonce sync failed")
-		}
-	}
-
-	loadedPrivateKey, err := eth_crypto.HexToECDSA(ko.MustString("system.private_key"))
-	if err != nil {
-		lo.Fatal("Failed to load system private key", "error", err)
-	}
-
-	return loadedPrivateKey
-}

cmd/init_tasker.go

@@ -1,65 +0,0 @@
-package main
-
-import (
-	"github.com/grassrootseconomics/cic-custodial/internal/tasker"
-	"github.com/grassrootseconomics/cic-custodial/internal/tasker/task"
-	"github.com/hibiken/asynq"
-)
-
-func initTasker() *tasker.TaskerServer {
-	lo.Debug("Bootstrapping tasker")
-
-	taskerServerOpts := tasker.TaskerServerOpts{
-		Concurrency:     ko.MustInt("asynq.concurrency"),
-		Logg:            lo,
-		RedisPool:       asynqRedisPool,
-		SystemContainer: nil,
-		TaskerClient:    taskerClient,
-	}
-
-	if debugFlag {
-		taskerServerOpts.LogLevel = asynq.DebugLevel
-	}
-
-	taskerServer := tasker.NewTaskerServer(taskerServerOpts)
-
-	taskerServer.RegisterHandlers(tasker.PrepareAccountTask, task.PrepareAccount(
-		redisNoncestore,
-		taskerClient,
-	))
-	taskerServer.RegisterHandlers(tasker.GiftGasTask, task.GiftGasProcessor(
-		celoProvider,
-		redisNoncestore,
-		lockProvider,
-		system,
-		taskerClient,
-	))
-	taskerServer.RegisterHandlers(tasker.GiftTokenTask, task.GiftTokenProcessor(
-		celoProvider,
-		redisNoncestore,
-		lockProvider,
-		system,
-		taskerClient,
-	))
-	taskerServer.RegisterHandlers(tasker.RefillGasTask, task.RefillGasProcessor(
-		celoProvider,
-		redisNoncestore,
-		lockProvider,
-		system,
-		taskerClient,
-	))
-	taskerServer.RegisterHandlers(tasker.TransferTokenTask, task.TransferToken(
-		celoProvider,
-		redisNoncestore,
-		postgresKeystore,
-		lockProvider,
-		system,
-		taskerClient,
-	))
-	taskerServer.RegisterHandlers(tasker.TxDispatchTask, task.TxDispatch(
-		celoProvider,
-	))
-
-	lo.Debug("Registered all tasker handlers")
-	return taskerServer
-}

cmd/main.go

@@ -1,122 +0,0 @@
-package main
-
-import (
-	"context"
-	"flag"
-	"os"
-	"os/signal"
-	"strings"
-	"sync"
-	"syscall"
-
-	"github.com/bsm/redislock"
-	celo "github.com/grassrootseconomics/cic-celo-sdk"
-	"github.com/grassrootseconomics/cic-custodial/internal/keystore"
-	"github.com/grassrootseconomics/cic-custodial/internal/nonce"
-	"github.com/grassrootseconomics/cic-custodial/internal/tasker"
-	"github.com/grassrootseconomics/cic-custodial/pkg/redis"
-	"github.com/jackc/pgx/v5/pgxpool"
-	"github.com/knadh/koanf"
-	"github.com/labstack/echo/v4"
-	"github.com/zerodha/logf"
-)
-
-var (
-	confFlag       string
-	debugFlag      bool
-	taskerModeFlag bool
-	apiModeFlag    bool
-
-	asynqRedisPool   *redis.RedisPool
-	celoProvider     *celo.Provider
-	commonRedisPool  *redis.RedisPool
-	lo               logf.Logger
-	lockProvider     *redislock.Client
-	ko               *koanf.Koanf
-	postgresPool     *pgxpool.Pool
-	postgresKeystore keystore.Keystore
-	redisNoncestore  nonce.Noncestore
-	system           *tasker.SystemContainer
-	taskerClient     *tasker.TaskerClient
-)
-
-func init() {
-	flag.StringVar(&confFlag, "config", "config.toml", "Config file location")
-	flag.BoolVar(&debugFlag, "log", false, "Enable debug logging")
-	flag.BoolVar(&taskerModeFlag, "tasker", true, "Start tasker")
-	flag.BoolVar(&apiModeFlag, "api", true, "Start API server")
-	flag.Parse()
-
-	lo = initLogger(debugFlag)
-	ko = initConfig(confFlag)
-
-	celoProvider = initCeloProvider()
-	postgresPool = initPostgresPool()
-	postgresKeystore = initKeystore()
-	asynqRedisPool = initAsynqRedisPool()
-	commonRedisPool = initCommonRedisPool()
-	redisNoncestore = initRedisNoncestore()
-	lockProvider = initLockProvider()
-	taskerClient = initTaskerClient()
-	system = initSystemContainer()
-}
-
-func main() {
-	var (
-		tasker    *tasker.TaskerServer
-		apiServer *echo.Echo
-		wg        sync.WaitGroup
-	)
-
-	ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGTERM)
-	defer stop()
-
-	if apiModeFlag {
-		apiServer = initApiServer()
-
-		wg.Add(1)
-		go func() {
-			defer wg.Done()
-
-			lo.Info("Starting API server")
-			if err := apiServer.Start(ko.MustString("service.address")); err != nil {
-				if strings.Contains(err.Error(), "Server closed") {
-					lo.Info("Shutting down server")
-				} else {
-					lo.Fatal("Could not start api server", "err", err)
-				}
-			}
-		}()
-	}
-
-	if taskerModeFlag {
-		tasker = initTasker()
-
-		wg.Add(1)
-		go func() {
-			defer wg.Done()
-
-			lo.Info("Starting tasker")
-			if err := tasker.Start(); err != nil {
-				lo.Fatal("Could not start task server", "err", err)
-			}
-		}()
-	}
-
-	<-ctx.Done()
-	lo.Info("Graceful shutdown triggered")
-
-	if taskerModeFlag {
-		lo.Debug("Stopping tasker")
-		tasker.Stop()
-	}
-
-	if apiModeFlag {
-		lo.Debug("Stopping api server")
-		if err := apiServer.Shutdown(ctx); err != nil {
-			lo.Error("Could not gracefully shutdown api server", "err", err)
-		}
-	}
-
-	wg.Wait()
-}

cmd/service/api.go

@@ -0,0 +1,64 @@
+package main
+
+import (
+	"errors"
+	"net/http"
+
+	"github.com/VictoriaMetrics/metrics"
+	"github.com/go-playground/validator"
+	"github.com/grassrootseconomics/cic-custodial/internal/api"
+	"github.com/hibiken/asynq"
+	"github.com/labstack/echo/v4"
+)
+
+// Bootstrap API server.
+func initApiServer(custodialContainer *custodial) *echo.Echo {
+	lo.Debug("api: bootstrapping api server")
+	server := echo.New()
+	server.HideBanner = true
+	server.HidePort = true
+
+	server.HTTPErrorHandler = func(err error, c echo.Context) {
+		// Handle asynq duplication errors across all api handlers.
+		if errors.Is(err, asynq.ErrTaskIDConflict) {
+			c.JSON(http.StatusForbidden, api.ErrResp{
+				Ok:      false,
+				Code:    api.DUPLICATE_ERROR,
+				Message: "Request with duplicate tracking id submitted.",
+			})
+			return
+		}
+
+		// Log internal server error for further investigation.
+		lo.Error("api:", "path", c.Path(), "err", err)
+
+		c.JSON(http.StatusInternalServerError, api.ErrResp{
+			Ok:      false,
+			Code:    api.INTERNAL_ERROR,
+			Message: "Internal server error.",
+		})
+	}
+
+	if ko.Bool("service.metrics") {
+		server.GET("/metrics", func(c echo.Context) error {
+			metrics.WritePrometheus(c.Response(), true)
+			return nil
+		})
+	}
+
+	server.Validator = &api.Validator{
+		ValidatorProvider: validator.New(),
+	}
+
+	apiRoute := server.Group("/api")
+	apiRoute.POST("/account/create", api.CreateAccountHandler(
+		custodialContainer.keystore,
+		custodialContainer.taskerClient,
+	))
+
+	apiRoute.POST("/sign/transfer", api.SignTransferHandler(
+		custodialContainer.taskerClient,
+	))
+
+	return server
+}

cmd/service/custodial.go

@@ -0,0 +1,70 @@
+package main
+
+import (
+	"context"
+	"math/big"
+	"time"
+
+	eth_crypto "github.com/celo-org/celo-blockchain/crypto"
+	"github.com/go-redis/redis/v8"
+	"github.com/grassrootseconomics/cic-custodial/internal/nonce"
+	"github.com/grassrootseconomics/cic-custodial/internal/tasker"
+	"github.com/grassrootseconomics/w3-celo-patch"
+)
+
+// Define common smart contrcat ABI's that can be injected into the system container.
+// Any relevant function signature that will be used by the custodial system can be defined here.
+func initAbis() map[string]*w3.Func {
+	return map[string]*w3.Func{
+		// Keccak hash -> 0x449a52f8
+		"mintTo": w3.MustNewFunc("mintTo(address, uint256)", "bool"),
+		// Keccak hash -> 0xa9059cbb
+		"transfer": w3.MustNewFunc("transfer(address,uint256)", "bool"),
+		// Keccak hash -> 0x23b872dd
+		"transferFrom": w3.MustNewFunc("transferFrom(address, address, uint256)", "bool"),
+		// Add to account index
+		"add": w3.MustNewFunc("add(address)", "bool"),
+		// giveTo gas refill
+		"giveTo": w3.MustNewFunc("giveTo(address)", "uint256"),
+	}
+}
+
+// Bootstrap the internal custodial system configs and system signer key.
+// This container is passed down to individual tasker and API handlers.
+func initSystemContainer(ctx context.Context, noncestore nonce.Noncestore) (*tasker.SystemContainer, error) {
+	// Some custodial system defaults loaded from the config file.
+	systemContainer := &tasker.SystemContainer{
+		Abis:                  initAbis(),
+		AccountIndexContract:  w3.A(ko.MustString("system.account_index")),
+		GasFaucetContract:     w3.A(ko.MustString("system.gas_faucet")),
+		GasRefillThreshold:    big.NewInt(ko.MustInt64("system.gas_refill_threshold")),
+		GasRefillValue:        big.NewInt(ko.MustInt64("system.gas_refill_value")),
+		GiftableGasValue:      big.NewInt(ko.MustInt64("system.giftable_gas_value")),
+		GiftableToken:         w3.A(ko.MustString("system.giftable_token_address")),
+		GiftableTokenValue:    big.NewInt(ko.MustInt64("system.giftable_token_value")),
+		LockPrefix:            ko.MustString("system.lock_prefix"),
+		LockTimeout:           1 * time.Second,
+		PublicKey:             ko.MustString("system.public_key"),
+		TokenDecimals:         ko.MustInt("system.token_decimals"),
+		TokenTransferGasLimit: uint64(ko.MustInt64("system.token_transfer_gas_limit")),
+	}
+	// Check if system signer account nonce is present.
+	// If not (first boot), we bootstrap it from the network.
+	currentSystemNonce, err := noncestore.Peek(ctx, ko.MustString("system.public_key"))
+	lo.Info("custodial: loaded (noncestore) system nonce", "nonce", currentSystemNonce)
+	if err == redis.Nil {
+		nonce, err := noncestore.SyncNetworkNonce(ctx, ko.MustString("system.public_key"))
+		lo.Info("custodial: syncing system nonce", "nonce", nonce)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	loadedPrivateKey, err := eth_crypto.HexToECDSA(ko.MustString("system.private_key"))
+	if err != nil {
+		return nil, err
+	}
+	systemContainer.PrivateKey = loadedPrivateKey
+
+	return systemContainer, nil
+}

cmd/service/init.go

@@ -0,0 +1,210 @@
+package main
+
+import (
+	"strings"
+	"time"
+
+	"github.com/bsm/redislock"
+	celo "github.com/grassrootseconomics/cic-celo-sdk"
+	"github.com/grassrootseconomics/cic-custodial/internal/keystore"
+	"github.com/grassrootseconomics/cic-custodial/internal/nonce"
+	"github.com/grassrootseconomics/cic-custodial/internal/queries"
+	"github.com/grassrootseconomics/cic-custodial/internal/store"
+	"github.com/grassrootseconomics/cic-custodial/internal/tasker"
+	"github.com/grassrootseconomics/cic-custodial/pkg/logg"
+	"github.com/grassrootseconomics/cic-custodial/pkg/postgres"
+	"github.com/grassrootseconomics/cic-custodial/pkg/redis"
+	"github.com/jackc/pgx/v5/pgxpool"
+	"github.com/knadh/goyesql/v2"
+	"github.com/knadh/koanf"
+	"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"
+)
+
+// Load config file.
+func initConfig(configFilePath string) *koanf.Koanf {
+	var (
+		ko = koanf.New(".")
+	)
+
+	confFile := file.Provider(configFilePath)
+	if err := ko.Load(confFile, toml.Parser()); err != nil {
+		lo.Fatal("Could not load config file", "error", err)
+	}
+
+	if err := ko.Load(env.Provider("", ".", func(s string) string {
+		return strings.ReplaceAll(strings.ToLower(
+			strings.TrimPrefix(s, "")), "_", ".")
+	}), nil); err != nil {
+		lo.Fatal("Could not override config from env vars", "error", err)
+	}
+
+	return ko
+}
+
+// Load logger.
+func initLogger(debug bool) logf.Logger {
+	loggOpts := logg.LoggOpts{
+		Color: true,
+	}
+
+	if debug {
+		loggOpts.Caller = true
+		loggOpts.Debug = true
+	}
+
+	return logg.NewLogg(loggOpts)
+}
+
+// Load Celo chain provider.
+func initCeloProvider() (*celo.Provider, error) {
+	providerOpts := celo.ProviderOpts{
+		RpcEndpoint: ko.MustString("chain.rpc_endpoint"),
+	}
+
+	if ko.Bool("chain.testnet") {
+		// Devnet = 1337
+		providerOpts.ChainId = 1337
+	} else {
+		providerOpts.ChainId = celo.MainnetChainId
+	}
+
+	provider, err := celo.NewProvider(providerOpts)
+	if err != nil {
+		return nil, err
+	}
+
+	return provider, nil
+}
+
+// Load postgres pool.
+func initPostgresPool() (*pgxpool.Pool, error) {
+	poolOpts := postgres.PostgresPoolOpts{
+		DSN: ko.MustString("postgres.dsn"),
+	}
+
+	pool, err := postgres.NewPostgresPool(poolOpts)
+	if err != nil {
+		return nil, err
+	}
+
+	return pool, nil
+}
+
+// Load separate redis connection for the tasker on a reserved db namespace.
+func initAsynqRedisPool() (*redis.RedisPool, error) {
+	poolOpts := redis.RedisPoolOpts{
+		DSN:          ko.MustString("asynq.dsn"),
+		MinIdleConns: ko.MustInt("redis.min_idle_conn"),
+	}
+
+	pool, err := redis.NewRedisPool(poolOpts)
+	if err != nil {
+		return nil, err
+	}
+
+	return pool, nil
+}
+
+// Common redis connection on a different db namespace from the takser.
+func initCommonRedisPool() (*redis.RedisPool, error) {
+	poolOpts := redis.RedisPoolOpts{
+		DSN:          ko.MustString("redis.dsn"),
+		MinIdleConns: ko.MustInt("redis.min_idle_conn"),
+	}
+
+	pool, err := redis.NewRedisPool(poolOpts)
+	if err != nil {
+		return nil, err
+	}
+
+	return pool, nil
+}
+
+// Load SQL statements into struct.
+func initQueries(queriesPath string) (*queries.Queries, error) {
+	parsedQueries, err := goyesql.ParseFile(queriesFlag)
+	if err != nil {
+		return nil, err
+	}
+
+	loadedQueries, err := queries.LoadQueries(parsedQueries)
+	if err != nil {
+		return nil, err
+	}
+
+	return loadedQueries, nil
+}
+
+// Load postgres based keystore.
+func initPostgresKeystore(postgresPool *pgxpool.Pool, queries *queries.Queries) (keystore.Keystore, error) {
+	keystore := keystore.NewPostgresKeytore(keystore.Opts{
+		PostgresPool: postgresPool,
+		Queries:      queries,
+	})
+
+	return keystore, nil
+}
+
+// Load redis backed noncestore.
+func initRedisNoncestore(redisPool *redis.RedisPool, celoProvider *celo.Provider) nonce.Noncestore {
+	return nonce.NewRedisNoncestore(nonce.Opts{
+		RedisPool:    redisPool,
+		CeloProvider: celoProvider,
+	})
+}
+
+// Load global lock provider.
+func initLockProvider(redisPool redislock.RedisClient) *redislock.Client {
+	return redislock.New(redisPool)
+}
+
+// Load tasker client.
+func initTaskerClient(redisPool *redis.RedisPool) *tasker.TaskerClient {
+	return tasker.NewTaskerClient(tasker.TaskerClientOpts{
+		RedisPool:     redisPool,
+		TaskRetention: time.Duration(ko.MustInt64("asynq.task_retention_hrs")) * time.Hour,
+	})
+}
+
+// Load Postgres store
+func initPostgresStore(postgresPool *pgxpool.Pool, queries *queries.Queries) store.Store {
+	return store.NewPostgresStore(store.Opts{
+		PostgresPool: postgresPool,
+		Queries:      queries,
+	})
+}
+
+// Init JetStream context for tasker events.
+func initJetStream() (nats.JetStreamContext, error) {
+	natsConn, err := nats.Connect(ko.MustString("jetstream.endpoint"))
+	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
+}

cmd/service/main.go

@@ -0,0 +1,147 @@
+package main
+
+import (
+	"context"
+	"flag"
+	"os"
+	"os/signal"
+	"strings"
+	"sync"
+	"syscall"
+
+	"github.com/bsm/redislock"
+	celo "github.com/grassrootseconomics/cic-celo-sdk"
+	"github.com/grassrootseconomics/cic-custodial/internal/keystore"
+	"github.com/grassrootseconomics/cic-custodial/internal/nonce"
+	"github.com/grassrootseconomics/cic-custodial/internal/store"
+	"github.com/grassrootseconomics/cic-custodial/internal/tasker"
+	"github.com/knadh/koanf"
+	"github.com/labstack/echo/v4"
+	"github.com/zerodha/logf"
+)
+
+var (
+	confFlag    string
+	debugFlag   bool
+	queriesFlag string
+
+	lo logf.Logger
+	ko *koanf.Koanf
+)
+
+type custodial struct {
+	celoProvider    *celo.Provider
+	keystore        keystore.Keystore
+	lockProvider    *redislock.Client
+	noncestore      nonce.Noncestore
+	pgStore         store.Store
+	systemContainer *tasker.SystemContainer
+	taskerClient    *tasker.TaskerClient
+}
+
+func init() {
+	flag.StringVar(&confFlag, "config", "config.toml", "Config file location")
+	flag.BoolVar(&debugFlag, "log", false, "Enable debug logging")
+	flag.StringVar(&queriesFlag, "queries", "queries.sql", "Queries file location")
+	flag.Parse()
+
+	lo = initLogger(debugFlag)
+	ko = initConfig(confFlag)
+}
+
+func main() {
+	var (
+		tasker    *tasker.TaskerServer
+		apiServer *echo.Echo
+		wg        sync.WaitGroup
+	)
+
+	ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGTERM)
+	defer stop()
+
+	celoProvider, err := initCeloProvider()
+	if err != nil {
+		lo.Fatal("main: critical error loading chain provider", "error", err)
+	}
+
+	queries, err := initQueries(queriesFlag)
+	if err != nil {
+		lo.Fatal("main: critical error loading SQL queries", "error", err)
+	}
+
+	postgresPool, err := initPostgresPool()
+	if err != nil {
+		lo.Fatal("main: critical error connecting to postgres", "error", err)
+	}
+
+	asynqRedisPool, err := initAsynqRedisPool()
+	if err != nil {
+		lo.Fatal("main: critical error connecting to asynq redis db", "error", err)
+	}
+
+	redisPool, err := initCommonRedisPool()
+	if err != nil {
+		lo.Fatal("main: critical error connecting to common redis db", "error", err)
+	}
+
+	postgresKeystore, err := initPostgresKeystore(postgresPool, queries)
+	if err != nil {
+		lo.Fatal("main: critical error loading keystore")
+	}
+
+	pgStore := initPostgresStore(postgresPool, queries)
+	redisNoncestore := initRedisNoncestore(redisPool, celoProvider)
+	lockProvider := initLockProvider(redisPool.Client)
+	taskerClient := initTaskerClient(asynqRedisPool)
+
+	systemContainer, err := initSystemContainer(context.Background(), redisNoncestore)
+	if err != nil {
+		lo.Fatal("main: critical error bootstrapping system container", "error", err)
+	}
+
+	custodial := &custodial{
+		celoProvider:    celoProvider,
+		keystore:        postgresKeystore,
+		lockProvider:    lockProvider,
+		noncestore:      redisNoncestore,
+		pgStore:         pgStore,
+		systemContainer: systemContainer,
+		taskerClient:    taskerClient,
+	}
+
+	apiServer = initApiServer(custodial)
+	wg.Add(1)
+	go func() {
+		defer wg.Done()
+		lo.Info("main: starting API server")
+		if err := apiServer.Start(ko.MustString("service.address")); err != nil {
+			if strings.Contains(err.Error(), "Server closed") {
+				lo.Info("main: shutting down server")
+			} else {
+				lo.Fatal("main: critical error shutting down server", "err", err)
+			}
+		}
+	}()
+
+	tasker = initTasker(custodial, asynqRedisPool)
+	wg.Add(1)
+	go func() {
+		defer wg.Done()
+		lo.Info("Starting tasker")
+		if err := tasker.Start(); err != nil {
+			lo.Fatal("main: could not start task server", "err", err)
+		}
+	}()
+
+	<-ctx.Done()
+
+	lo.Info("main: stopping tasker")
+	tasker.Stop()
+
+	lo.Info("main: stopping api server")
+	if err := apiServer.Shutdown(ctx); err != nil {
+		lo.Error("Could not gracefully shutdown api server", "err", err)
+	}
+
+	wg.Wait()
+}

cmd/service/tasker.go

@@ -0,0 +1,82 @@
+package main
+
+import (
+	"github.com/grassrootseconomics/cic-custodial/internal/tasker"
+	"github.com/grassrootseconomics/cic-custodial/internal/tasker/task"
+	"github.com/grassrootseconomics/cic-custodial/pkg/redis"
+	"github.com/hibiken/asynq"
+)
+
+// Load tasker handlers, injecting any necessary handler dependencies from the system container.
+func initTasker(custodialContainer *custodial, redisPool *redis.RedisPool) *tasker.TaskerServer {
+	lo.Debug("Bootstrapping tasker")
+	js, err := initJetStream()
+	if err != nil {
+		lo.Fatal("filters: critical error loading jetstream", "error", err)
+	}
+
+	taskerServerOpts := tasker.TaskerServerOpts{
+		Concurrency:     ko.MustInt("asynq.worker_count"),
+		Logg:            lo,
+		LogLevel:        asynq.ErrorLevel,
+		RedisPool:       redisPool,
+		SystemContainer: custodialContainer.systemContainer,
+		TaskerClient:    custodialContainer.taskerClient,
+	}
+
+	if debugFlag {
+		taskerServerOpts.LogLevel = asynq.DebugLevel
+	}
+
+	taskerServer := tasker.NewTaskerServer(taskerServerOpts)
+
+	taskerServer.RegisterHandlers(tasker.PrepareAccountTask, task.PrepareAccount(
+		custodialContainer.noncestore,
+		custodialContainer.taskerClient,
+		js,
+	))
+	taskerServer.RegisterHandlers(tasker.RegisterAccountOnChain, task.RegisterAccountOnChainProcessor(
+		custodialContainer.celoProvider,
+		custodialContainer.lockProvider,
+		custodialContainer.noncestore,
+		custodialContainer.pgStore,
+		custodialContainer.systemContainer,
+		custodialContainer.taskerClient,
+		js,
+	))
+	taskerServer.RegisterHandlers(tasker.GiftGasTask, task.GiftGasProcessor(
+		custodialContainer.celoProvider,
+		custodialContainer.lockProvider,
+		custodialContainer.noncestore,
+		custodialContainer.pgStore,
+		custodialContainer.systemContainer,
+		custodialContainer.taskerClient,
+		js,
+	))
+	taskerServer.RegisterHandlers(tasker.GiftTokenTask, task.GiftTokenProcessor(
+		custodialContainer.celoProvider,
+		custodialContainer.lockProvider,
+		custodialContainer.noncestore,
+		custodialContainer.pgStore,
+		custodialContainer.systemContainer,
+		custodialContainer.taskerClient,
+		js,
+	))
+	taskerServer.RegisterHandlers(tasker.SignTransferTask, task.SignTransfer(
+		custodialContainer.celoProvider,
+		custodialContainer.keystore,
+		custodialContainer.lockProvider,
+		custodialContainer.noncestore,
+		custodialContainer.pgStore,
+		custodialContainer.systemContainer,
+		custodialContainer.taskerClient,
+		js,
+	))
+	taskerServer.RegisterHandlers(tasker.TxDispatchTask, task.TxDispatch(
+		custodialContainer.celoProvider,
+		custodialContainer.pgStore,
+		js,
+	))
+
+	return taskerServer
+}

config.toml

@@ -1,21 +1,32 @@
 [service]
-address          = ":5000"
+address = ":5005"
-statsviz_debug   = true
+# Exposes Prometheus metrics
+# /metrics endpoint
+metrics = true
 
+# System default values
+# Valus are in wei unless otherwise stated
 [system]
-gas_refill_threshold     = 100000000000000
+# The giftable token is a training voucher
-gas_refill_value         = 100000000000000
+# Every new user is given 5 DGFT
-giftable_gas_value       = 200000000000000
+gas_faucet = "0xA8b3Ffc715e85792FB361BDee9357B38D5A4a6cF"
-giftable_token_address   = "0x486aD10d70107900546455F7a0e022c300F157Bf"
+giftable_token_address = "0xdD4F5ea484F6b16f031eF7B98F3810365493BC20"
-giftable_token_value     = 5000000000000000000
+giftable_token_value = 5000000
-private_key              = "a6af6c597c614e3c8ee4b7638ab7c3f737aece3773a5413ca8caf4338e6b06d1"
+gas_refill_threshold = 100000000000000000
+gas_refill_value = 100000000000000000
+# Every custodial account is given 2 KES worth of CELO
+giftable_gas_value = 2000000000000000000
+# System private key
+# Should always be toped up
+private_key = "bfa7222a7bea3bde312434abe819b14cf3bc8703ceaabb98a9e3a97ceb0b79fd"
 lock_prefix = "lock:"
-public_key               = "0x80097c773B3E83472FC7952c5206a7DB35d42bEF"
+public_key = "0x08eb3a90128D5874da54cf654fCfA88cEd1bb047"
-token_decimals           = 18
+token_decimals = 6
-token_transfer_gas_limit = 100000
+token_transfer_gas_limit = 200000
+account_index = "0xdb2550ac5E52A54B6189FFAf17ECfF33AE190db9"
 
 [chain]
-rpc_endpoint = "https://alfajores-forno.celo-testnet.org"
+rpc_endpoint = "http://192.168.0.101:8545"
 testnet = true
 
 [postgres]
@@ -25,9 +36,29 @@ dsn   = "postgres://postgres:postgres@localhost:5432/cic_custodial"
 [redis]
 debug = false
 dsn = "redis://localhost:6379/1"
-minconn = 5
+min_idle_conn = 5
 
 [asynq]
-concurrency = 25
+worker_count = 15
 debug = false
-dsn         = "redis://redis:6379/0"
+dsn = "redis://localhost:6379/0"
+task_retention_hrs = 24
+
+# https://docs.nats.io/
+[jetstream]
+endpoint               = "nats://localhost:4222"
+stream_name            = "CUSTODIAL"
+# Duration JetStream should keep the message before remocing it from the persistent store
+persist_duration_hours = 48
+# Duration to ignore duplicate transactions (e.g. due to restart)
+dedup_duration_hours   = 6
+# Stream subjects
+stream_subjects        = [
+    "CUSTODIAL.accountNewNonce",
+    "CUSTODIAL.accountRegister",
+    "CUSTODIAL.giftNewAccountGas",
+    "CUSTODIAL.giftNewAccountVoucher",
+    "CUSTODIAL.dispatchFail",
+    "CUSTODIAL.dispatchSuccess",
+    "CUSTODIAL.transferSign"
+]

docker-compose.dev.yaml

@@ -1,4 +1,4 @@
-version: '3.9'
+version: "3.9"
 services:
   redis:
     image: redis:6-alpine
@@ -7,7 +7,7 @@ services:
     volumes:
       - cic-custodial-redis:/data
     ports:
-      - '6379:6379'
+      - "127.0.0.1:6379:6379"
     healthcheck:
       test: ["CMD-SHELL", "redis-cli ping | grep PONG"]
       interval: 10s
@@ -24,36 +24,35 @@ services:
     volumes:
       - cic-custodial-pg:/var/lib/postgresql/data
     ports:
-      - '5432:5432'
+      - "127.0.0.1:5432:5432"
     healthcheck:
       test: ["CMD-SHELL", "pg_isready"]
       interval: 10s
       timeout: 5s
       retries: 5
+  nats:
+    image: nats:2.9
+    restart: unless-stopped
+    command: "-js -sd /nats/data"
+    volumes:
+      - cic-custodial-nats:/nats/data
+    ports:
+      - "4222:4222"
+      - "8222:8222"
   asynqmon:
     image: hibiken/asynqmon
     restart: unless-stopped
     environment:
       - REDIS_ADDR=redis:6379
     ports:
-      - '8080:8080'
+      - "127.0.0.1:8080:8080"
     depends_on:
       redis:
         condition: service_healthy
-  cic-custodial:
-    image: ghcr.io/grassrootseconomics/cic-custodial/cic-custodial:latest
-    restart: unless-stopped
-    depends_on:
-      postgres: 
-        condition: service_healthy
-      redis: 
-        condition: service_healthy        
-    env_file:
-      - .env
-    ports:
-      - '5000:5000'
 volumes:
   cic-custodial-pg:
     driver: local
   cic-custodial-redis:
     driver: local
+  cic-custodial-nats:
+    driver: local

docker-compose.test.yaml

@@ -1,29 +0,0 @@
-version: '3.9'
-services:
-  redis:
-    image: redis:6-alpine
-    restart: unless-stopped
-    command: redis-server --save 60 1 --loglevel warning
-    ports:
-      - '6379:6379'
-    healthcheck:
-      test: ["CMD-SHELL", "redis-cli ping | grep PONG"]
-      interval: 10s
-      timeout: 5s
-      retries: 5      
-  postgres:
-    image: postgres:14-alpine
-    restart: unless-stopped
-    user: postgres
-    environment:
-      - POSTGRES_PASSWORD=postgres
-      - POSTGRES_USER=postgres
-      - POSTGRES_DB=cic_custodial
-    ports:
-      - '5432:5432'
-    healthcheck:
-      test: ["CMD-SHELL", "pg_isready"]
-      interval: 10s
-      timeout: 5s
-      retries: 5
-      

go.mod

@@ -3,19 +3,19 @@ module github.com/grassrootseconomics/cic-custodial
 go 1.19
 
 require (
-	github.com/arl/statsviz v0.5.1
+	github.com/VictoriaMetrics/metrics v1.23.1
 	github.com/bsm/redislock v0.7.2
-	github.com/celo-org/celo-blockchain v1.6.1
+	github.com/celo-org/celo-blockchain v1.7.2
 	github.com/go-playground/validator v9.31.0+incompatible
 	github.com/go-redis/redis/v8 v8.11.5
 	github.com/google/uuid v1.3.0
-	github.com/grassrootseconomics/cic-celo-sdk v0.3.1
+	github.com/grassrootseconomics/cic-celo-sdk v0.4.0
-	github.com/grassrootseconomics/w3-celo-patch v0.1.0
+	github.com/grassrootseconomics/w3-celo-patch v0.2.0
 	github.com/hibiken/asynq v0.24.0
 	github.com/jackc/pgx/v5 v5.2.0
+	github.com/knadh/goyesql/v2 v2.2.0
 	github.com/knadh/koanf v1.4.5
 	github.com/labstack/echo/v4 v4.10.0
-	github.com/stretchr/testify v1.8.1
 	github.com/zerodha/logf v0.5.5
 )
 
@@ -31,10 +31,10 @@ require (
 	github.com/celo-org/celo-bls-go-other v0.6.3 // indirect
 	github.com/celo-org/celo-bls-go-windows v0.6.3 // indirect
 	github.com/cespare/xxhash/v2 v2.1.2 // indirect
-	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/deckarep/golang-set v1.8.0 // indirect
 	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
 	github.com/fsnotify/fsnotify v1.4.9 // indirect
+	github.com/georgysavva/scany/v2 v2.0.0 // indirect
 	github.com/go-ole/go-ole v1.2.6 // indirect
 	github.com/go-playground/locales v0.14.0 // indirect
 	github.com/go-playground/universal-translator v0.18.0 // indirect
@@ -60,28 +60,33 @@ require (
 	github.com/mitchellh/copystructure v1.2.0 // indirect
 	github.com/mitchellh/mapstructure v1.5.0 // indirect
 	github.com/mitchellh/reflectwalk v1.0.2 // indirect
+	github.com/nats-io/nats.go v1.23.0 // indirect
+	github.com/nats-io/nkeys v0.3.0 // indirect
+	github.com/nats-io/nuid v1.0.1 // indirect
 	github.com/olekukonko/tablewriter v0.0.5 // indirect
 	github.com/onsi/gomega v1.24.1 // indirect
 	github.com/pelletier/go-toml v1.7.0 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
-	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/prometheus/tsdb v0.10.0 // indirect
 	github.com/rivo/uniseg v0.4.3 // indirect
 	github.com/robfig/cron/v3 v3.0.1 // indirect
+	github.com/rogpeppe/go-internal v1.9.0 // indirect
 	github.com/shirou/gopsutil v3.21.11+incompatible // indirect
 	github.com/spf13/cast v1.3.1 // indirect
 	github.com/syndtr/goleveldb v1.0.1-0.20210819022825-2ae1ddf74ef7 // indirect
 	github.com/tklauser/go-sysconf v0.3.11 // indirect
 	github.com/tklauser/numcpus v0.6.0 // indirect
 	github.com/valyala/bytebufferpool v1.0.0 // indirect
+	github.com/valyala/fastrand v1.1.0 // indirect
 	github.com/valyala/fasttemplate v1.2.2 // indirect
+	github.com/valyala/histogram v1.2.0 // indirect
 	github.com/yusufpapurcu/wmi v1.2.2 // indirect
 	go.uber.org/atomic v1.10.0 // indirect
-	golang.org/x/crypto v0.3.0 // indirect
+	golang.org/x/crypto v0.5.0 // indirect
-	golang.org/x/net v0.4.0 // indirect
+	golang.org/x/net v0.5.0 // indirect
 	golang.org/x/sync v0.1.0 // indirect
-	golang.org/x/sys v0.3.0 // indirect
+	golang.org/x/sys v0.4.0 // indirect
-	golang.org/x/text v0.5.0 // indirect
+	golang.org/x/text v0.6.0 // indirect
 	golang.org/x/time v0.2.0 // indirect
 	google.golang.org/protobuf v1.28.0 // indirect
 	gopkg.in/go-playground/assert.v1 v1.2.1 // indirect

go.sum

@@ -43,6 +43,8 @@ github.com/StackExchange/wmi v0.0.0-20180116203802-5d049714c4a6/go.mod h1:3eOhrU
 github.com/VictoriaMetrics/fastcache v1.6.0/go.mod h1:0qHz5QP0GMX4pfmMA/zt5RgfNuXJrTP0zS7DqpHGGTw=
 github.com/VictoriaMetrics/fastcache v1.12.0 h1:vnVi/y9yKDcD9akmc4NqAoqgQhJrOwUF+j9LTgn4QDE=
 github.com/VictoriaMetrics/fastcache v1.12.0/go.mod h1:tjiYeEfYXCqacuvYw/7UoDIeJaNxq6132xHICNP77w8=
+github.com/VictoriaMetrics/metrics v1.23.1 h1:/j8DzeJBxSpL2qSIdqnRFLvQQhbJyJbbEi22yMm7oL0=
+github.com/VictoriaMetrics/metrics v1.23.1/go.mod h1:rAr/llLpEnAdTehiNlUxKgnjcOuROSzpw0GvjpEbvFc=
 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=
@@ -55,8 +57,6 @@ github.com/allegro/bigcache v1.2.1-0.20190218064605-e24eb225f156/go.mod h1:Cb/ax
 github.com/andreyvit/diff v0.0.0-20170406064948-c7f18ee00883/go.mod h1:rCTlJbsFo29Kk6CurOXKm700vrz8f0KW0JNfpkRJY/8=
 github.com/antihax/optional v1.0.0/go.mod h1:uupD/76wgC+ih3iEmQUL+0Ugr19nfwCT1kdvxnR2qWY=
 github.com/apache/arrow/go/arrow v0.0.0-20191024131854-af6fa24be0db/go.mod h1:VTxUBvSJ3s3eHAg65PNgrsn5BtqCRPdmyXh6rAfdxN0=
-github.com/arl/statsviz v0.5.1 h1:3HY0ZEB738JtguWsD1Tf1pFJZiCcWUmYRq/3OTYKaSI=
-github.com/arl/statsviz v0.5.1/go.mod h1:zDnjgRblGm1Dyd7J5YlbH7gM1/+HRC+SfkhZhQb5AnM=
 github.com/armon/circbuf v0.0.0-20150827004946-bbbad097214e/go.mod h1:3U/XgcO3hCbHZ8TKRvWD2dDTCfh9M9ya+I9JpbB7O8o=
 github.com/armon/go-metrics v0.0.0-20180917152333-f0300d1749da/go.mod h1:Q73ZrmVTwzkszR9V5SSuryQ31EELlFMUz1kKyl939pY=
 github.com/armon/go-radix v0.0.0-20180808171621-7fddfc383310/go.mod h1:ufUuZ+zHj4x4TnLV4JWEpy2hxWSpsRywHrMgIH9cCH8=
@@ -102,19 +102,28 @@ github.com/buraksezer/consistent v0.0.0-20191006190839-693edf70fd72/go.mod h1:OE
 github.com/c-bata/go-prompt v0.2.2/go.mod h1:VzqtzE2ksDBcdln8G7mk2RX9QyGjH+OVqOCSiVIqS34=
 github.com/celo-org/celo-blockchain v1.6.1 h1:Kv+OXLXwdORDz3aIrGY1oCuw0aYSlK4KH7o8cGxO8FU=
 github.com/celo-org/celo-blockchain v1.6.1/go.mod h1:NdcP5idffWajmOP79Q0PCRfaFNTmTdSKBMbngLDxjpQ=
+github.com/celo-org/celo-blockchain v1.7.2 h1:LjQ+t89inzSK2K9i/twwwW07kIE1ubEVDlrcet+UvLU=
+github.com/celo-org/celo-blockchain v1.7.2/go.mod h1:x5HsfXAfUjxKQfTWzroQSb2HljaQEVgf2/mQVDPIMIY=
 github.com/celo-org/celo-bls-go v0.2.4/go.mod h1:eXUCLXu5F1yfd3M+3VaUk5ZUXaA0sLK2rWdLC1Cfaqo=
+github.com/celo-org/celo-bls-go v0.3.3/go.mod h1:eoMAORYWgZ5HOo3Z0bIAv/nbPtj/eArIO0nh7XFx7rk=
 github.com/celo-org/celo-bls-go v0.6.4 h1:zBf6pEr9k64gaO0VSYnDfLCBmrxDigc4yUaDvWub5G8=
 github.com/celo-org/celo-bls-go v0.6.4/go.mod h1:apSlSDPoXIdGseCS4Z2AMrhO5B1xpIVTXYpfv/uRd04=
+github.com/celo-org/celo-bls-go-android v0.3.2/go.mod h1:cFgtFRH8+6x5b+EyG5SqniXY3aKd03NBSGDgITscX34=
 github.com/celo-org/celo-bls-go-android v0.6.3 h1:mCtzKM99OCfsSu/i9A4+BaUJhEfYSEWPR0wHUu4YlO0=
 github.com/celo-org/celo-bls-go-android v0.6.3/go.mod h1:N8rOFwyCS3Ff9p45/rLfdLWfoyFwOvjVQ6F+VKbmIbU=
+github.com/celo-org/celo-bls-go-ios v0.3.2/go.mod h1:eaSoMpx29YV5oF7jXVChzJpNfxeZHnAa8G4PjL5CyW0=
 github.com/celo-org/celo-bls-go-ios v0.6.3 h1:8t08eq924VlxjTCKwzRWOlULRWlhqNmF+ok7pn4Unjg=
 github.com/celo-org/celo-bls-go-ios v0.6.3/go.mod h1:huG1qfXZVMDkFmEZo4UYOAu46EEzYrR8brE4flPul5c=
+github.com/celo-org/celo-bls-go-linux v0.3.2/go.mod h1:DVpJadg22OrxBtMb0ub6iNVdqDBL/r6EDdWVAA0bHa0=
 github.com/celo-org/celo-bls-go-linux v0.6.3 h1:9Evpz1ix4v7tswiJ89+ED3m8sYQ6PG9T0ZogHrvz0xE=
 github.com/celo-org/celo-bls-go-linux v0.6.3/go.mod h1:E6fEQ+whLgMqEToE1e3FWf/9+ikG+wNE5ik7z5Dxgbc=
+github.com/celo-org/celo-bls-go-macos v0.3.2/go.mod h1:mYPuRqGMVxj6yZUeL6Q6ggtP52HPBS1jz+FvBPXQ7QA=
 github.com/celo-org/celo-bls-go-macos v0.6.3 h1:+sEiFYoqdlDVO50LmONBSzu/PxCP0aP8fiGjWuAvBzg=
 github.com/celo-org/celo-bls-go-macos v0.6.3/go.mod h1:RC05VQ2cvF8vMc0tpLc7pfp8oSKrrGcI+o5LLXGequk=
+github.com/celo-org/celo-bls-go-other v0.3.2/go.mod h1:tNxZNfekzyT7TdYQbyNPhkfpcYtA3KCU/IKX5FNxM/U=
 github.com/celo-org/celo-bls-go-other v0.6.3 h1:DTVLfg/ZNizB5Wnbxq0mYh3VXsDtD1lZFvd0Ye4xv7o=
 github.com/celo-org/celo-bls-go-other v0.6.3/go.mod h1:1xEWTbCXUrDx3Z6R9YlLi1zFNNn1oMMnEcpLbcW+q74=
+github.com/celo-org/celo-bls-go-windows v0.3.2/go.mod h1:82GC5iJA9Qw5gynhYqR8ht3J+l/MO8eSNzgSTMI8UdA=
 github.com/celo-org/celo-bls-go-windows v0.6.3 h1:yrHZ+1EjONf++u5QEUseebImiD23Rv2GEcoYfPxYhuw=
 github.com/celo-org/celo-bls-go-windows v0.6.3/go.mod h1:8bRJbLcHREIAWn+5iZM3u8rGPBsWepp9BdF3SexisuM=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
@@ -169,6 +178,8 @@ github.com/fogleman/gg v1.2.1-0.20190220221249-0403632d5b90/go.mod h1:R/bRT+9gY/
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
 github.com/fsnotify/fsnotify v1.4.9 h1:hsms1Qyu0jgnwNXIxa+/V/PDsU6CfLf6CNO8H7IWoS4=
 github.com/fsnotify/fsnotify v1.4.9/go.mod h1:znqG4EE+3YCdAaPaxE2ZRY/06pZUdp0tY4IgpuI1SZQ=
+github.com/georgysavva/scany/v2 v2.0.0 h1:RGXqxDv4row7/FYoK8MRXAZXqoWF/NM+NP0q50k3DKU=
+github.com/georgysavva/scany/v2 v2.0.0/go.mod h1:sigOdh+0qb/+aOs3TVhehVT10p8qJL7K/Zhyz8vWo38=
 github.com/getkin/kin-openapi v0.53.0/go.mod h1:7Yn5whZr5kJi6t+kShccXS8ae1APpYTW6yheSwk8Yi4=
 github.com/getkin/kin-openapi v0.61.0/go.mod h1:7Yn5whZr5kJi6t+kShccXS8ae1APpYTW6yheSwk8Yi4=
 github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
@@ -203,6 +214,7 @@ github.com/go-redis/redis/v8 v8.11.4/go.mod h1:2Z2wHZXdQpCDXEGzqMockDpNyYvi2l4Px
 github.com/go-redis/redis/v8 v8.11.5 h1:AcZZR7igkdvfVmQTPnu9WE37LRrO/YrBH5zWyjDC0oI=
 github.com/go-redis/redis/v8 v8.11.5/go.mod h1:gREzHqY1hg6oD9ngVRbLStwAWKhA0FEgq8Jd4h5lpwo=
 github.com/go-sourcemap/sourcemap v2.1.2+incompatible/go.mod h1:F8jJfvm2KbVjc5NqelyYJmf/v5J0dwNLS2mL4sNA1Jg=
+github.com/go-sql-driver/mysql v1.4.0/go.mod h1:zAC/RDZ24gD3HViQzih4MyKcchzm+sOG5ZlKdlhCg5w=
 github.com/go-sql-driver/mysql v1.4.1/go.mod h1:zAC/RDZ24gD3HViQzih4MyKcchzm+sOG5ZlKdlhCg5w=
 github.com/go-stack/stack v1.8.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/melR3HDY=
 github.com/go-stack/stack v1.8.1 h1:ntEHSVwIt7PNXNpgPmVfMrNhLtgjlmnZha2kOpuRiDw=
@@ -278,12 +290,14 @@ github.com/gorilla/websocket v1.4.2/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/ad
 github.com/gorilla/websocket v1.5.0 h1:PPwGk2jz7EePpoHN/+ClbZu8SPxiqlu12wZP/3sWmnc=
 github.com/gorilla/websocket v1.5.0/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 v0.3.0 h1:uqYlad/sL4nWzExSE3ecfGQNdY0Gs6pqpkez1vX5XnI=
-github.com/grassrootseconomics/cic-celo-sdk v0.3.0/go.mod h1:EiR6d03GYu6jlVKNL1MbTAw/bqAW2WP3J/lkrZxPMdU=
 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/cic-celo-sdk v0.4.0 h1:wh7aOQ/oK+q1nBl2koKe45WVbsWM0riPhhtEz6JLub4=
+github.com/grassrootseconomics/cic-celo-sdk v0.4.0/go.mod h1:G8uRw+rEw6yVP/+vBZ2V0UWXfs6iioit+eqVHrB9sBk=
 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/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=
 github.com/grpc-ecosystem/grpc-gateway v1.16.0/go.mod h1:BDjrQk3hbvj6Nolgz8mAMFbcEtjT1g+wF4CSlocrBnw=
 github.com/hashicorp/consul/api v1.13.0/go.mod h1:ZlVrynguJKcYr54zGaDbaL3fOvKC9m72FhPvA8T35KQ=
@@ -368,6 +382,7 @@ github.com/jedisct1/go-minisign v0.0.0-20190909160543-45766022959e/go.mod h1:G1C
 github.com/jessevdk/go-flags v0.0.0-20141203071132-1679536dcc89/go.mod h1:4FA24M0QyGHXBuZZK/XkWh8h0e1EYbRYJSGM75WSRxI=
 github.com/jmespath/go-jmespath v0.4.0/go.mod h1:T8mJZnbsbmF+m6zOOFylbeCJqk5+pHWvzYPziyZiYoo=
 github.com/jmespath/go-jmespath/internal/testify v1.5.1/go.mod h1:L3OGu8Wl2/fWfCI6z80xFu9LTZmf1ZRjMHUOPmWr69U=
+github.com/jmoiron/sqlx v1.2.0/go.mod h1:1FEQNm3xlJgrMD+FBdI9+xvCksHtbpVBBw5dYhBSsks=
 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/jpillora/backoff v1.0.0/go.mod h1:J/6gKK9jxlEcS3zixgDgUAsiuZ7yrSoa/FX5e0EB2j4=
@@ -392,6 +407,8 @@ github.com/klauspost/compress v1.4.0/go.mod h1:RyIbtBH6LamlWaDj8nUwkbUhJ87Yi3uG0
 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=
 github.com/klauspost/pgzip v1.0.2-0.20170402124221-0bf5dcad4ada/go.mod h1:Ch1tH69qFZu15pkjo5kYi6mth2Zzwzt50oCQKQE9RUs=
+github.com/knadh/goyesql/v2 v2.2.0 h1:DNQIzgITmMTXA+z+jDzbXCpgr7fGD6Hp0AJ7ZLEAem4=
+github.com/knadh/goyesql/v2 v2.2.0/go.mod h1:is+wK/XQBukYK3DdKfpJRyDH9U/ZTMyX2u6DFijjRnI=
 github.com/knadh/koanf v1.4.5 h1:yKWFswTrqFc0u7jBAoERUz30+N1b1yPXU01gAPr8IrY=
 github.com/knadh/koanf v1.4.5/go.mod h1:Hgyjp4y8v44hpZtPzs7JZfRAW5AhN7KfZcwv1RYggDs=
 github.com/konsorten/go-windows-terminal-sequences v1.0.1/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
@@ -443,6 +460,7 @@ github.com/mattn/go-runewidth v0.0.3/go.mod h1:LwmH8dsx7+W8Uxz3IHJYH5QSwggIsqBzp
 github.com/mattn/go-runewidth v0.0.9/go.mod h1:H031xJmbD/WCDINGzjvQ9THkh0rPKHF+m2gUSrubnMI=
 github.com/mattn/go-runewidth v0.0.14 h1:+xnbZSEeDbOIg5/mE6JF0w6n9duR1l3/WmbinWVwUuU=
 github.com/mattn/go-runewidth v0.0.14/go.mod h1:Jdepj2loyihRzMpdS35Xk/zdY8IAYHsh153qUoGf23w=
+github.com/mattn/go-sqlite3 v1.9.0/go.mod h1:FPy6KqzDD04eiIsT53CuJW3U88zkxoIYsOqkbpncsNc=
 github.com/mattn/go-sqlite3 v1.11.0/go.mod h1:FPy6KqzDD04eiIsT53CuJW3U88zkxoIYsOqkbpncsNc=
 github.com/mattn/go-tty v0.0.0-20180907095812-13ff1204f104/go.mod h1:XPvLUNfbS4fJH25nqRHfWLMa1ONC8Amw+mIA639KxkE=
 github.com/matttproud/golang_protobuf_extensions v1.0.1/go.mod h1:D8He9yQNgCq6Z5Ld7szi9bcBfOoFv/3dc6xSMkL2PC0=
@@ -475,6 +493,12 @@ github.com/mwitkow/go-conntrack v0.0.0-20161129095857-cc309e4a2223/go.mod h1:qRW
 github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
 github.com/naoina/go-stringutil v0.1.0/go.mod h1:XJ2SJL9jCtBh+P9q5btrd/Ylo8XwT/h1USek5+NqSA0=
 github.com/naoina/toml v0.1.2-0.20170918210437-9fafd6967416/go.mod h1:NBIhNtsFMo3G2szEBne+bO4gS192HuIYRqfvOWb4i1E=
+github.com/nats-io/nats.go v1.23.0 h1:lR28r7IX44WjYgdiKz9GmUeW0uh/m33uD3yEjLZ2cOE=
+github.com/nats-io/nats.go v1.23.0/go.mod h1:ki/Scsa23edbh8IRZbCuNXR9TDcbvfaSijKtaqQgw+Q=
+github.com/nats-io/nkeys v0.3.0 h1:cgM5tL53EvYRU+2YLXIK0G2mJtK12Ft9oeooSZMA2G8=
+github.com/nats-io/nkeys v0.3.0/go.mod h1:gvUNGjVcM2IPr5rCsRsC6Wb3Hr2CQAm08dsxtV6A5y4=
+github.com/nats-io/nuid v1.0.1 h1:5iA8DT8V7q8WK2EScv2padNa/rTESc1KdnPw4TC2paw=
+github.com/nats-io/nuid v1.0.1/go.mod h1:19wcPz3Ph3q0Jbyiqsd0kePYG7A95tJPxeL+1OSON2c=
 github.com/npillmayer/nestext v0.1.3/go.mod h1:h2lrijH8jpicr25dFY+oAJLyzlya6jhnuG+zWp9L0Uk=
 github.com/nxadm/tail v1.4.4/go.mod h1:kenIhsEOeOJmVchQTgglprH7qJGnHDVpk1VPCcaMI8A=
 github.com/nxadm/tail v1.4.8 h1:nPr65rt6Y5JFSKQO7qToXr7pePgD6Gwiw05lkbyAQTE=
@@ -510,6 +534,7 @@ github.com/peterh/liner v1.0.1-0.20180619022028-8c1271fcf47f/go.mod h1:xIteQHvHu
 github.com/peterh/liner v1.1.1-0.20190123174540-a2c9a5303de7/go.mod h1:CRroGNssyjTd/qIG2FyxByd2S8JEAZXBl4qUrZf8GS0=
 github.com/philhofer/fwd v1.0.0/go.mod h1:gk3iGcWd9+svBvR0sR+KPcfE+RNWozjowpeBVG3ZVNU=
 github.com/pierrec/lz4 v2.0.5+incompatible/go.mod h1:pdkljMzZIN41W+lC3N2tnIh5sFi+IEE17M5jbnwPHcY=
+github.com/pkg/diff v0.0.0-20210226163009-20ebb0f2a09e/go.mod h1:pJLUxLENpZxwdsKMEsNbx1VGcRFpLqf3715MtcvvzbA=
 github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
@@ -550,6 +575,9 @@ github.com/robfig/cron/v3 v3.0.1/go.mod h1:eQICP3HwyT7UooqI/z+Ov+PtYAWygg1TEWWzG
 github.com/rogpeppe/fastuuid v1.2.0/go.mod h1:jVj6XXZzXRy/MSR5jhDC/2q6DgLz+nrA6LYCDYWNEvQ=
 github.com/rogpeppe/go-internal v1.3.0/go.mod h1:M8bDsm7K2OlrFYOpmOWEs/qY81heoFRclV5y23lUDJ4=
 github.com/rogpeppe/go-internal v1.8.1 h1:geMPLpDpQOgVyCg5z5GoRwLHepNdb71NXb67XFkP+Eg=
+github.com/rogpeppe/go-internal v1.8.1/go.mod h1:JeRgkft04UBgHMgCIwADu4Pn6Mtm5d4nPKWu0nJ5d+o=
+github.com/rogpeppe/go-internal v1.9.0 h1:73kH8U+JUqXU8lRuOHeVHaa/SZPifC7BkcraZVejAe8=
+github.com/rogpeppe/go-internal v1.9.0/go.mod h1:WtVeX8xhTBvf0smdhujwtBcq4Qrzq/fJaraNFVN+nFs=
 github.com/rs/cors v1.7.0/go.mod h1:gFx+x8UowdsKA9AchylcLynDq+nNFfI8FkUZdN/jGCU=
 github.com/russross/blackfriday/v2 v2.0.1/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
 github.com/ryanuber/columnize v0.0.0-20160712163229-9b3edd62028f/go.mod h1:sm1tb6uqfes/u+d4ooFouqFdy9/2g9QGwK3SQygK0Ts=
@@ -579,8 +607,6 @@ github.com/spf13/pflag v1.0.5 h1:iy+VFUOCP1a+8yFto/drg2CJ5u0yRoB7fZw3DKv/JXA=
 github.com/spf13/pflag v1.0.5/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
-github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
-github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
 github.com/stretchr/testify v1.2.0/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
 github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
@@ -588,10 +614,7 @@ github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81P
 github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
 github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
-github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
-github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
 github.com/stretchr/testify v1.8.1 h1:w7B6lhMri9wdJUVmEZPGGhZzrYTPvgJArz7wNPgYKsk=
-github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
 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/tinylib/msgp v1.0.2/go.mod h1:+d+yLhGm8mzTaHzB+wgMYrodPfmZrzkirds8fDWklFE=
@@ -605,10 +628,14 @@ github.com/tyler-smith/go-bip39 v1.0.1-0.20181017060643-dbb3b84ba2ef/go.mod h1:s
 github.com/urfave/cli/v2 v2.3.0/go.mod h1:LJmUH05zAU44vOAcrfzZQKsZbVcdbOG8rtL3/XcUArI=
 github.com/valyala/bytebufferpool v1.0.0 h1:GqA5TC/0021Y/b9FG4Oi9Mr3q7XYx6KllzawFIhcdPw=
 github.com/valyala/bytebufferpool v1.0.0/go.mod h1:6bBcMArwyJ5K/AmCkWv1jt77kVWyCJ6HpOuEn7z0Csc=
+github.com/valyala/fastrand v1.1.0 h1:f+5HkLW4rsgzdNoleUOB69hyT9IlD2ZQh9GyDMfb5G8=
+github.com/valyala/fastrand v1.1.0/go.mod h1:HWqCzkrkg6QXT8V2EXWvXCoow7vLwOFN002oeRzjapQ=
 github.com/valyala/fasttemplate v1.0.1/go.mod h1:UQGH1tvbgY+Nz5t2n7tXsz52dQxojPUpymEIMZ47gx8=
 github.com/valyala/fasttemplate v1.2.1/go.mod h1:KHLXt3tVN2HBp8eijSv/kGJopbvo7S+qRAEEKiv+SiQ=
 github.com/valyala/fasttemplate v1.2.2 h1:lxLXG0uE3Qnshl9QyaK6XJxMXlQZELvChBOCmQD0Loo=
 github.com/valyala/fasttemplate v1.2.2/go.mod h1:KHLXt3tVN2HBp8eijSv/kGJopbvo7S+qRAEEKiv+SiQ=
+github.com/valyala/histogram v1.2.0 h1:wyYGAZZt3CpwUiIb9AU/Zbllg1llXyrtApRS815OLoQ=
+github.com/valyala/histogram v1.2.0/go.mod h1:Hb4kBwb4UxsaNbbbh+RRz8ZR6pdodR57tzWUS3BUzXY=
 github.com/willf/bitset v1.1.3/go.mod h1:RjeCKbqT1RxIR/KWY6phxZiaY1IyutSBfGjNPySAYV4=
 github.com/xlab/treeprint v0.0.0-20180616005107-d6fb6747feb6/go.mod h1:ce1O1j6UtZfjr22oyGxGLbauSBp2YVXpARAosm7dHBg=
 github.com/yuin/goldmark v1.1.27/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
@@ -646,9 +673,12 @@ golang.org/x/crypto v0.0.0-20200115085410-6d4e4cb37c7d/go.mod h1:LzIPMQfyMNhhGPh
 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=
 golang.org/x/crypto v0.0.0-20201221181555-eec23a3978ad/go.mod h1:jdWPYTVW3xRLrWPugEBEK3UY2ZEsg3UU495nc5E+M+I=
+golang.org/x/crypto v0.0.0-20210314154223-e6e6c4f2bb5b/go.mod h1:T9bdIzuCu7OtxOm1hfPfRQxPLYneinmdGuTeoZ9dtd4=
 golang.org/x/crypto v0.0.0-20210322153248-0c34fe9e7dc2/go.mod h1:T9bdIzuCu7OtxOm1hfPfRQxPLYneinmdGuTeoZ9dtd4=
 golang.org/x/crypto v0.3.0 h1:a06MkbcxBrEFc0w0QIZWXrH/9cCX6KJyWbBOIwAn+7A=
 golang.org/x/crypto v0.3.0/go.mod h1:hebNnKkNXi2UzZN1eVRvBB7co0a+JxK6XbPiWVs/3J4=
+golang.org/x/crypto v0.5.0 h1:U/0M97KRkSFvyD/3FSmdP5W5swImpNgle/EHFhOsQPE=
+golang.org/x/crypto v0.5.0/go.mod h1:NK/OQwhpMQP3MwtdjgLlYHnH9ebylxKWv3e0fK+mkQU=
 golang.org/x/exp v0.0.0-20180321215751-8460e604b9de/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20180807140117-3d87b88a115f/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
@@ -711,6 +741,8 @@ golang.org/x/net v0.0.0-20210428140749-89ef3d95e781/go.mod h1:OJAsFXCWl8Ukc7SiCT
 golang.org/x/net v0.0.0-20210805182204-aaa1db679c0d/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/net v0.4.0 h1:Q5QPcMlvfxFTAPV0+07Xz/MpK9NTXu2VDUuy0FeMfaU=
 golang.org/x/net v0.4.0/go.mod h1:MBQ8lrhLObU/6UmLb4fmbmk5OcyYmqtbGd/9yIeKjEE=
+golang.org/x/net v0.5.0 h1:GyT4nK/YDHSqa1c4753ouYCDajOYKTja9Xb/OHtgvSw=
+golang.org/x/net v0.5.0/go.mod h1:DivGGAXEgPSlEBzxGzZI+ZLohi+xUj054jfeKui00ws=
 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
 golang.org/x/oauth2 v0.0.0-20190226205417-e64efc72b421/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
 golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
@@ -791,6 +823,8 @@ golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBc
 golang.org/x/sys v0.2.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.3.0 h1:w8ZOecv6NaNa/zC8944JTU3vz4u6Lagfk4RPQxv92NQ=
 golang.org/x/sys v0.3.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.4.0 h1:Zr2JFtRQNX3BCZ8YtxRE9hNJYC8J6I1MVbMg6owUp18=
+golang.org/x/sys v0.4.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/term v0.0.0-20201117132131-f5c789dd3221/go.mod h1:Nr5EML6q2oocZ2LXRh80K7BxOlk5/8JxuGnuhpl+muw=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
@@ -803,6 +837,8 @@ golang.org/x/text v0.3.5/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.5.0 h1:OLmvp0KP+FVG99Ct/qFiL/Fhk4zp4QQnZ7b2U+5piUM=
 golang.org/x/text v0.5.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
+golang.org/x/text v0.6.0 h1:3XmdazWV+ubf7QgHSTWeykHOci5oeekaGJBLkrkaw4k=
+golang.org/x/text v0.6.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
 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=

internal/api/account.go

@@ -0,0 +1,64 @@
+package api
+
+import (
+	"encoding/json"
+	"net/http"
+
+	"github.com/google/uuid"
+	"github.com/grassrootseconomics/cic-custodial/internal/keystore"
+	"github.com/grassrootseconomics/cic-custodial/internal/tasker"
+	"github.com/grassrootseconomics/cic-custodial/internal/tasker/task"
+	"github.com/grassrootseconomics/cic-custodial/pkg/keypair"
+	"github.com/labstack/echo/v4"
+)
+
+// CreateAccountHandler route.
+// POST: /api/account/create
+// Returns the public key.
+func CreateAccountHandler(
+	keystore keystore.Keystore,
+	taskerClient *tasker.TaskerClient,
+) func(echo.Context) error {
+	return func(c echo.Context) error {
+		trackingId := uuid.NewString()
+
+		generatedKeyPair, err := keypair.Generate()
+		if err != nil {
+			return err
+		}
+
+		id, err := keystore.WriteKeyPair(c.Request().Context(), generatedKeyPair)
+		if err != nil {
+			return err
+		}
+
+		taskPayload, err := json.Marshal(task.AccountPayload{
+			PublicKey:  generatedKeyPair.Public,
+			TrackingId: trackingId,
+		})
+		if err != nil {
+			return err
+		}
+
+		_, err = taskerClient.CreateTask(
+			tasker.PrepareAccountTask,
+			tasker.DefaultPriority,
+			&tasker.Task{
+				Id:      trackingId,
+				Payload: taskPayload,
+			},
+		)
+		if err != nil {
+			return err
+		}
+
+		return c.JSON(http.StatusOK, OkResp{
+			Ok: true,
+			Result: H{
+				"publicKey":   generatedKeyPair.Public,
+				"custodialId": id,
+				"trackingId":  trackingId,
+			},
+		})
+	}
+}

internal/api/registration.go

@@ -1,71 +0,0 @@
-package api
-
-import (
-	"encoding/json"
-	"net/http"
-
-	"github.com/grassrootseconomics/cic-custodial/internal/keystore"
-	"github.com/grassrootseconomics/cic-custodial/internal/tasker"
-	"github.com/grassrootseconomics/cic-custodial/internal/tasker/task"
-	"github.com/grassrootseconomics/cic-custodial/pkg/keypair"
-	"github.com/labstack/echo/v4"
-)
-
-type registrationResponse struct {
-	PublicKey string `json:"publicKey"`
-	TaskRef    string `json:"taskRef"`
-}
-
-func RegistrationHandler(
-	taskerClient *tasker.TaskerClient,
-	keystore keystore.Keystore,
-) func(echo.Context) error {
-	return func(c echo.Context) error {
-		generatedKeyPair, err := keypair.Generate()
-		if err != nil {
-			return echo.NewHTTPError(http.StatusInternalServerError, errResp{
-				Ok:    false,
-				Error: KEYPAIR_ERROR,
-			})
-		}
-
-		if err := keystore.WriteKeyPair(c.Request().Context(), generatedKeyPair); err != nil {
-			return echo.NewHTTPError(http.StatusInternalServerError, errResp{
-				Ok:    false,
-				Error: INTERNAL_ERROR,
-			})
-		}
-
-		taskPayload, err := json.Marshal(task.SystemPayload{
-			PublicKey: generatedKeyPair.Public,
-		})
-		if err != nil {
-			return echo.NewHTTPError(http.StatusInternalServerError, errResp{
-				Ok:    false,
-				Error: JSON_MARSHAL_ERROR,
-			})
-		}
-
-		task, err := taskerClient.CreateTask(
-			tasker.PrepareAccountTask,
-			tasker.DefaultPriority,
-			&tasker.Task{
-				Payload: taskPayload,
-			},
-		)
-		if err != nil {
-			return echo.NewHTTPError(http.StatusInternalServerError, errResp{
-				Ok:    false,
-				Error: TASK_CHAIN_ERROR,
-			})
-		}
-
-		return c.JSON(http.StatusOK, okResp{
-			Ok: true,
-			Data: registrationResponse{
-				PublicKey: generatedKeyPair.Public,
-				TaskRef:    task.ID,
-			},
-		})
-	}
-}

internal/api/sign.go

@@ -0,0 +1,67 @@
+package api
+
+import (
+	"encoding/json"
+	"net/http"
+
+	"github.com/google/uuid"
+	"github.com/grassrootseconomics/cic-custodial/internal/tasker"
+	"github.com/labstack/echo/v4"
+)
+
+// SignTxHandler route.
+// POST: /api/sign/transfer
+// JSON Body:
+// trackingId -> Unique string
+// from -> ETH address
+// to -> ETH address
+// voucherAddress -> ETH address
+// amount -> int (6 d.p. precision)
+// e.g. 1000000 = 1 VOUCHER
+// Returns the task id.
+func SignTransferHandler(
+	taskerClient *tasker.TaskerClient,
+) func(echo.Context) error {
+	return func(c echo.Context) error {
+		trackingId := uuid.NewString()
+
+		var transferRequest struct {
+			From           string `json:"from" validate:"required,eth_addr"`
+			To             string `json:"to" validate:"required,eth_addr"`
+			VoucherAddress string `json:"voucherAddress" validate:"required,eth_addr"`
+			Amount         int64  `json:"amount" validate:"required,numeric"`
+		}
+
+		if err := c.Bind(&transferRequest); err != nil {
+			return err
+		}
+
+		if err := c.Validate(transferRequest); err != nil {
+			return err
+		}
+
+		taskPayload, err := json.Marshal(transferRequest)
+		if err != nil {
+			return err
+		}
+
+		_, err = taskerClient.CreateTask(
+			tasker.SignTransferTask,
+			tasker.HighPriority,
+			&tasker.Task{
+				Id:      trackingId,
+				Payload: taskPayload,
+			},
+		)
+		if err != nil {
+			return err
+		}
+
+		return c.JSON(http.StatusOK, OkResp{
+			Ok: true,
+			Result: H{
+				"trackingId": trackingId,
+			},
+		})
+	}
+}

internal/api/transfer.go

@@ -1,69 +0,0 @@
-package api
-
-import (
-	"encoding/json"
-	"net/http"
-
-	"github.com/grassrootseconomics/cic-custodial/internal/tasker"
-	"github.com/labstack/echo/v4"
-)
-
-type (
-	transferRequest struct {
-		From           string `json:"from" validate:"required,eth_addr"`
-		To             string `json:"to" validate:"required,eth_addr"`
-		VoucherAddress string `json:"voucherAddress" validate:"required,eth_addr"`
-		Amount         string `json:"amount" validate:"required,numeric"`
-	}
-
-	transferResponse struct {
-		TaskRef string `json:"taskRef"`
-	}
-)
-
-func TransferHandler(
-	taskerClient *tasker.TaskerClient,
-) func(echo.Context) error {
-	return func(c echo.Context) error {
-		transferPayload := new(transferRequest)
-
-		if err := c.Bind(transferPayload); err != nil {
-			return echo.NewHTTPError(http.StatusBadRequest, errResp{
-				Ok:    false,
-				Error: BIND_ERROR,
-			})
-		}
-		if err := c.Validate(transferPayload); err != nil {
-			return err
-		}
-
-		taskPayload, err := json.Marshal(transferPayload)
-		if err != nil {
-			return echo.NewHTTPError(http.StatusInternalServerError, errResp{
-				Ok:    false,
-				Error: JSON_MARSHAL_ERROR,
-			})
-		}
-
-		task, err := taskerClient.CreateTask(
-			tasker.TransferTokenTask,
-			tasker.DefaultPriority,
-			&tasker.Task{
-				Payload: taskPayload,
-			},
-		)
-		if err != nil {
-			return echo.NewHTTPError(http.StatusInternalServerError, errResp{
-				Ok:    false,
-				Error: TASK_CHAIN_ERROR,
-			})
-		}
-
-		return c.JSON(http.StatusOK, okResp{
-			Ok: true,
-			Data: transferResponse{
-				TaskRef: task.ID,
-			},
-		})
-	}
-}

internal/api/types.go

@@ -2,19 +2,19 @@ package api
 
 const (
 	INTERNAL_ERROR   = "ERR_INTERNAL"
-	KEYPAIR_ERROR      = "ERR_GEN_KEYPAIR"
-	JSON_MARSHAL_ERROR = "ERR_PAYLOAD_SERIALIZATION"
-	TASK_CHAIN_ERROR   = "ERR_START_TASK_CHAIN"
 	VALIDATION_ERROR = "ERR_VALIDATE"
-	BIND_ERROR         = "ERR_BIND"
+	DUPLICATE_ERROR  = "ERR_DUPLICATE"
 )
 
-type okResp struct {
+type H map[string]any
+
+type OkResp struct {
 	Ok     bool `json:"ok"`
-	Data interface{} `json:"data"`
+	Result H    `json:"result"`
 }
 
-type errResp struct {
+type ErrResp struct {
 	Ok      bool   `json:"ok"`
-	Error string `json:"error"`
+	Code    string `json:"errorCode"`
+	Message string `json:"message"`
 }

internal/api/validator.go

@@ -1,23 +1,21 @@
 package api
 
 import (
-	"fmt"
 	"net/http"
 
 	"github.com/go-playground/validator"
 	"github.com/labstack/echo/v4"
 )
 
-type CustomValidator struct {
+type Validator struct {
-	Validator *validator.Validate
+	ValidatorProvider *validator.Validate
 }
 
-func (cv *CustomValidator) Validate(i interface{}) error {
+func (v *Validator) Validate(i interface{}) error {
-	if err := cv.Validator.Struct(i); err != nil {
+	if err := v.ValidatorProvider.Struct(i); err != nil {
-		fmt.Println(err)
+		return echo.NewHTTPError(http.StatusBadRequest, ErrResp{
-		return echo.NewHTTPError(http.StatusBadRequest, errResp{
 			Ok:   false,
-			Error: VALIDATION_ERROR,
+			Code: VALIDATION_ERROR,
 		})
 	}
 	return nil

internal/keystore/keystore.go

@@ -7,7 +7,8 @@ import (
 	"github.com/grassrootseconomics/cic-custodial/pkg/keypair"
 )
 
+// Keystore defines how keypairs should be stored and accessed from a storage backend.
 type Keystore interface {
-	WriteKeyPair(context.Context, keypair.Key) error
+	WriteKeyPair(context.Context, keypair.Key) (uint, error)
 	LoadPrivateKey(context.Context, string) (*ecdsa.PrivateKey, error)
 }

internal/keystore/keystore_pg_test.go

@@ -1,65 +0,0 @@
-package keystore
-
-import (
-	"context"
-	"testing"
-
-	"github.com/grassrootseconomics/cic-custodial/pkg/keypair"
-	"github.com/grassrootseconomics/cic-custodial/pkg/logg"
-	"github.com/grassrootseconomics/cic-custodial/pkg/postgres"
-	"github.com/jackc/pgx/v5/pgxpool"
-	"github.com/stretchr/testify/suite"
-	"github.com/zerodha/logf"
-)
-
-const (
-	testDsn = "postgres://postgres:postgres@localhost:5432/cic_custodial"
-)
-
-type itKeystoreSuite struct {
-	suite.Suite
-	keystore Keystore
-	pgPool   *pgxpool.Pool
-	logg     logf.Logger
-}
-
-func TestItKeystoreSuite(t *testing.T) {
-	suite.Run(t, new(itKeystoreSuite))
-}
-
-func (s *itKeystoreSuite) SetupSuite() {
-	logg := logg.NewLogg(logg.LoggOpts{
-		Debug:  true,
-		Caller: true,
-	})
-
-	pgPool, err := postgres.NewPostgresPool(postgres.PostgresPoolOpts{
-		DSN: testDsn,
-	})
-	s.Require().NoError(err)
-	s.pgPool = pgPool
-	s.logg = logg
-
-	s.keystore, err = NewPostgresKeytore(Opts{
-		PostgresPool: pgPool,
-		Logg:         logg,
-	})
-	s.Require().NoError(err)
-}
-
-func (s *itKeystoreSuite) TearDownSuite() {
-	_, err := s.pgPool.Exec(context.Background(), "DROP TABLE IF EXISTS keystore")
-	s.Require().NoError(err)
-}
-
-func (s *itKeystoreSuite) Test_Write_And_Load_KeyPair() {
-	ctx := context.Background()
-	keypair, err := keypair.Generate()
-	s.NoError(err)
-
-	err = s.keystore.WriteKeyPair(ctx, keypair)
-	s.NoError(err)
-
-	_, err = s.keystore.LoadPrivateKey(ctx, keypair.Public)
-	s.NoError(err)
-}

internal/keystore/migrations.go

@@ -1,27 +0,0 @@
-package keystore
-
-import (
-	"context"
-	"time"
-
-	"github.com/jackc/pgx/v5/pgxpool"
-)
-
-func applyMigration(dbPool *pgxpool.Pool) error {
-	ctx, cancel := context.WithTimeout(context.Background(), 2*time.Second)
-	defer cancel()
-
-	_, err := dbPool.Exec(ctx, `
-	CREATE TABLE IF NOT EXISTS keystore (
-		id INT GENERATED ALWAYS AS IDENTITY PRIMARY KEY,
-		public_key TEXT NOT NULL,
-		private_key TEXT NOT NULL,
-		created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP
-	);
-	`)
-	if err != nil {
-		return err
-	}
-
-	return nil
-}

internal/keystore/postgres.go

@@ -3,49 +3,52 @@ package keystore
 import (
 	"context"
 	"crypto/ecdsa"
-	"fmt"
 
 	eth_crypto "github.com/celo-org/celo-blockchain/crypto"
+	"github.com/grassrootseconomics/cic-custodial/internal/queries"
 	"github.com/grassrootseconomics/cic-custodial/pkg/keypair"
 	"github.com/jackc/pgx/v5/pgxpool"
-	"github.com/zerodha/logf"
 )
 
-type Opts struct {
+type (
+	Opts struct {
 		PostgresPool *pgxpool.Pool
-	Logg         logf.Logger
+		Queries      *queries.Queries
-}
-
-type PostgresKeystore struct {
-	db *pgxpool.Pool
-}
-
-func NewPostgresKeytore(o Opts) (Keystore, error) {
-	if err := applyMigration(o.PostgresPool); err != nil {
-		return nil, fmt.Errorf("keystore migration failed %v", err)
 	}
-	o.Logg.Info("Successfully ran keystore migrations")
 
+	PostgresKeystore struct {
+		db      *pgxpool.Pool
+		queries *queries.Queries
+	}
+)
+
+func NewPostgresKeytore(o Opts) Keystore {
 	return &PostgresKeystore{
 		db:      o.PostgresPool,
-	}, nil
+		queries: o.Queries,
+	}
 }
 
-func (ks *PostgresKeystore) WriteKeyPair(ctx context.Context, keypair keypair.Key) error {
+// WriteKeyPair inserts a keypair into the db and returns the linked id.
-	_, err := ks.db.Exec(ctx, "INSERT INTO keystore(public_key, private_key) VALUES($1, $2)", keypair.Public, keypair.Private)
+func (ks *PostgresKeystore) WriteKeyPair(ctx context.Context, keypair keypair.Key) (uint, error) {
-	if err != nil {
+	var (
-		return err
+		id uint
+	)
+
+	if err := ks.db.QueryRow(ctx, ks.queries.WriteKeyPair, keypair.Public, keypair.Private).Scan(&id); err != nil {
+		return id, err
 	}
 
-	return nil
+	return id, nil
 }
 
+// LoadPrivateKey loads a private key as a crypto primitive for direct use. An id is used to search for the private key.
 func (ks *PostgresKeystore) LoadPrivateKey(ctx context.Context, publicKey string) (*ecdsa.PrivateKey, error) {
 	var (
 		privateKeyString string
 	)
 
-	if err := ks.db.QueryRow(ctx, "SELECT private_key FROM keystore WHERE public_key=$1", publicKey).Scan(&privateKeyString); err != nil {
+	if err := ks.db.QueryRow(ctx, ks.queries.LoadKeyPair, publicKey).Scan(&privateKeyString); err != nil {
 		return nil, err
 	}
 

internal/nonce/nonce.go

@@ -2,6 +2,7 @@ package nonce
 
 import "context"
 
+// Noncestore defines how a nonce store should be implemented for any storage backend.
 type Noncestore interface {
 	Peek(context.Context, string) (uint64, error)
 	Acquire(context.Context, string) (uint64, error)

internal/nonce/redis.go

@@ -11,7 +11,7 @@ import (
 
 type Opts struct {
 	RedisPool    *redispool.RedisPool
-	ChainProvider *celo.Provider
+	CeloProvider *celo.Provider
 }
 
 // RedisNoncestore implements `Noncestore`
@@ -23,7 +23,7 @@ type RedisNoncestore struct {
 func NewRedisNoncestore(o Opts) Noncestore {
 	return &RedisNoncestore{
 		redis:         o.RedisPool,
-		chainProvider: o.ChainProvider,
+		chainProvider: o.CeloProvider,
 	}
 }
 

internal/queries/queries.go

@@ -0,0 +1,27 @@
+package queries
+
+import (
+	"fmt"
+
+	"github.com/knadh/goyesql/v2"
+)
+
+type Queries struct {
+	// Keystore
+	WriteKeyPair string `query:"write-key-pair"`
+	LoadKeyPair  string `query:"load-key-pair"`
+	// OTX
+	CreateOTX string `query:"create-otx"`
+	// Dispatch
+	CreateDispatchStatus string `query:"create-dispatch-status"`
+}
+
+func LoadQueries(q goyesql.Queries) (*Queries, error) {
+	loadedQueries := &Queries{}
+
+	if err := goyesql.ScanToStruct(loadedQueries, q, nil); err != nil {
+		return nil, fmt.Errorf("failed to scan queries %v", err)
+	}
+
+	return loadedQueries, nil
+}

internal/store/dispatch.go

@@ -0,0 +1,24 @@
+package store
+
+import (
+	"context"
+)
+
+type Status string
+
+func (s *PostgresStore) CreateDispatchStatus(ctx context.Context, dispatch DispatchStatus) (uint, error) {
+	var (
+		id uint
+	)
+
+	if err := s.db.QueryRow(
+		ctx,
+		s.queries.CreateDispatchStatus,
+		dispatch.OtxId,
+		dispatch.Status,
+	).Scan(&id); err != nil {
+		return id, err
+	}
+
+	return id, nil
+}

internal/store/otx.go

@@ -0,0 +1,26 @@
+package store
+
+import "context"
+
+func (s *PostgresStore) CreateOTX(ctx context.Context, otx OTX) (uint, error) {
+	var (
+		id uint
+	)
+
+	if err := s.db.QueryRow(
+		ctx,
+		s.queries.CreateOTX,
+		otx.TrackingId,
+		otx.Type,
+		otx.RawTx,
+		otx.TxHash,
+		otx.From,
+		otx.Data,
+		otx.GasPrice,
+		otx.Nonce,
+	).Scan(&id); err != nil {
+		return id, err
+	}
+
+	return id, nil
+}

internal/store/postgres.go

@@ -0,0 +1,25 @@
+package store
+
+import (
+	"github.com/grassrootseconomics/cic-custodial/internal/queries"
+	"github.com/jackc/pgx/v5/pgxpool"
+)
+
+type (
+	Opts struct {
+		PostgresPool *pgxpool.Pool
+		Queries      *queries.Queries
+	}
+
+	PostgresStore struct {
+		db      *pgxpool.Pool
+		queries *queries.Queries
+	}
+)
+
+func NewPostgresStore(o Opts) Store {
+	return &PostgresStore{
+		db:      o.PostgresPool,
+		queries: o.Queries,
+	}
+}

internal/store/store.go

@@ -0,0 +1,32 @@
+package store
+
+import (
+	"context"
+
+	"github.com/grassrootseconomics/cic-custodial/pkg/status"
+)
+
+type (
+	OTX struct {
+		TrackingId string
+		Type       string
+		RawTx      string
+		TxHash     string
+		From       string
+		Data       string
+		GasPrice   uint64
+		Nonce      uint64
+	}
+
+	DispatchStatus struct {
+		OtxId  uint
+		Status status.Status
+	}
+
+	Store interface {
+		// OTX (Custodial originating transactions).
+		CreateOTX(ctx context.Context, otx OTX) (id uint, err error)
+		// Dispatch status.
+		CreateDispatchStatus(ctx context.Context, dispatch DispatchStatus) (id uint, err error)
+	}
+)

internal/tasker/server.go

@@ -73,6 +73,7 @@ func (ts *TaskerServer) Stop() {
 
 func expectedFailures(err error) bool {
 	switch err {
+	// Ignore lock contention errors; retry until lock obtain.
 	case redislock.ErrNotObtained:
 		return false
 	default:
@@ -80,6 +81,7 @@ func expectedFailures(err error) bool {
 	}
 }
 
+// Immidiatel
 func retryDelay(count int, err error, task *asynq.Task) time.Duration {
 	if count < fixedRetryCount {
 		return fixedRetryPeriod

internal/tasker/task/account.go

@@ -0,0 +1,556 @@
+package task
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"math/big"
+
+	"github.com/bsm/redislock"
+	"github.com/celo-org/celo-blockchain/common/hexutil"
+	celo "github.com/grassrootseconomics/cic-celo-sdk"
+	"github.com/grassrootseconomics/cic-custodial/internal/nonce"
+	"github.com/grassrootseconomics/cic-custodial/internal/store"
+	"github.com/grassrootseconomics/cic-custodial/internal/tasker"
+	"github.com/grassrootseconomics/w3-celo-patch"
+	"github.com/grassrootseconomics/w3-celo-patch/module/eth"
+	"github.com/hibiken/asynq"
+	"github.com/nats-io/nats.go"
+)
+
+type (
+	AccountPayload struct {
+		PublicKey  string `json:"publicKey"`
+		TrackingId string `json:"trackingId"`
+	}
+
+	accountEventPayload struct {
+		TrackingId string `json:"trackingId"`
+	}
+)
+
+func PrepareAccount(
+	noncestore nonce.Noncestore,
+	taskerClient *tasker.TaskerClient,
+	js nats.JetStreamContext,
+) func(context.Context, *asynq.Task) error {
+	return func(ctx context.Context, t *asynq.Task) error {
+		var (
+			p AccountPayload
+		)
+
+		if err := json.Unmarshal(t.Payload(), &p); err != nil {
+			return err
+		}
+
+		if err := noncestore.SetNewAccountNonce(ctx, p.PublicKey); err != nil {
+			return err
+		}
+
+		_, err := taskerClient.CreateTask(
+			tasker.RegisterAccountOnChain,
+			tasker.DefaultPriority,
+			&tasker.Task{
+				Payload: t.Payload(),
+			},
+		)
+		if err != nil {
+			return err
+		}
+
+		_, err = taskerClient.CreateTask(
+			tasker.GiftTokenTask,
+			tasker.DefaultPriority,
+			&tasker.Task{
+				Payload: t.Payload(),
+			},
+		)
+		if err != nil {
+			return err
+		}
+
+		eventPayload := &accountEventPayload{
+			TrackingId: p.TrackingId,
+		}
+
+		eventJson, err := json.Marshal(eventPayload)
+		if err != nil {
+			return err
+		}
+
+		_, err = js.Publish("CUSTODIAL.accountNewNonce", eventJson)
+		if err != nil {
+			return err
+		}
+
+		return nil
+	}
+}
+
+func RegisterAccountOnChainProcessor(
+	celoProvider *celo.Provider,
+	lockProvider *redislock.Client,
+	noncestore nonce.Noncestore,
+	pg store.Store,
+	system *tasker.SystemContainer,
+	taskerClient *tasker.TaskerClient,
+	js nats.JetStreamContext,
+) func(context.Context, *asynq.Task) error {
+	return func(ctx context.Context, t *asynq.Task) error {
+		var (
+			p AccountPayload
+		)
+
+		if err := json.Unmarshal(t.Payload(), &p); err != nil {
+			return err
+		}
+
+		lock, err := lockProvider.Obtain(ctx, system.LockPrefix+system.PublicKey, system.LockTimeout, nil)
+		if err != nil {
+			return err
+		}
+		defer lock.Release(ctx)
+
+		nonce, err := noncestore.Acquire(ctx, system.PublicKey)
+		if err != nil {
+			return err
+		}
+
+		input, err := system.Abis["add"].EncodeArgs(w3.A(p.PublicKey))
+		if err != nil {
+			return err
+		}
+
+		// TODO: Review gas params.
+		builtTx, err := celoProvider.SignContractExecutionTx(
+			system.PrivateKey,
+			celo.ContractExecutionTxOpts{
+				ContractAddress: system.AccountIndexContract,
+				InputData:       input,
+				GasPrice:        big.NewInt(20000000000),
+				GasLimit:        system.TokenTransferGasLimit,
+				Nonce:           nonce,
+			},
+		)
+		if err != nil {
+			if err := noncestore.Return(ctx, system.PublicKey); err != nil {
+				return err
+			}
+			return err
+		}
+
+		rawTx, err := builtTx.MarshalBinary()
+		if err != nil {
+			if err := noncestore.Return(ctx, system.PublicKey); err != nil {
+				return err
+			}
+
+			return err
+		}
+
+		id, err := pg.CreateOTX(ctx, store.OTX{
+			TrackingId: p.TrackingId,
+			Type:       "ACCOUNT_REGISTER",
+			RawTx:      hexutil.Encode(rawTx),
+			TxHash:     builtTx.Hash().Hex(),
+			From:       system.PublicKey,
+			Data:       hexutil.Encode(builtTx.Data()),
+			GasPrice:   builtTx.GasPrice().Uint64(),
+			Nonce:      builtTx.Nonce(),
+		})
+		if err != nil {
+			if err := noncestore.Return(ctx, system.PublicKey); err != nil {
+				return err
+			}
+
+			return err
+		}
+
+		disptachJobPayload, err := json.Marshal(TxPayload{
+			OtxId: id,
+			Tx:    builtTx,
+		})
+		if err != nil {
+			if err := noncestore.Return(ctx, system.PublicKey); err != nil {
+				return err
+			}
+
+			return err
+		}
+
+		_, err = taskerClient.CreateTask(
+			tasker.TxDispatchTask,
+			tasker.HighPriority,
+			&tasker.Task{
+				Payload: disptachJobPayload,
+			},
+		)
+		if err != nil {
+			if err := noncestore.Return(ctx, system.PublicKey); err != nil {
+				return err
+			}
+
+			return err
+		}
+
+		_, err = taskerClient.CreateTask(
+			tasker.GiftGasTask,
+			tasker.DefaultPriority,
+			&tasker.Task{
+				Payload: t.Payload(),
+			},
+		)
+		if err != nil {
+			return err
+		}
+
+		eventPayload := &accountEventPayload{
+			TrackingId: p.TrackingId,
+		}
+
+		eventJson, err := json.Marshal(eventPayload)
+		if err != nil {
+			return err
+		}
+
+		_, err = js.Publish("CUSTODIAL.accountRegister", eventJson)
+		if err != nil {
+			if err := noncestore.Return(ctx, system.PublicKey); err != nil {
+				return err
+			}
+
+			return err
+		}
+
+		return nil
+	}
+}
+
+func GiftGasProcessor(
+	celoProvider *celo.Provider,
+	lockProvider *redislock.Client,
+	noncestore nonce.Noncestore,
+	pg store.Store,
+	system *tasker.SystemContainer,
+	taskerClient *tasker.TaskerClient,
+	js nats.JetStreamContext,
+) func(context.Context, *asynq.Task) error {
+	return func(ctx context.Context, t *asynq.Task) error {
+		var (
+			p AccountPayload
+		)
+
+		if err := json.Unmarshal(t.Payload(), &p); err != nil {
+			return err
+		}
+
+		lock, err := lockProvider.Obtain(ctx, system.LockPrefix+system.PublicKey, system.LockTimeout, nil)
+		if err != nil {
+			return err
+		}
+		defer lock.Release(ctx)
+
+		nonce, err := noncestore.Acquire(ctx, system.PublicKey)
+		if err != nil {
+			return err
+		}
+
+		// TODO: Review gas params
+		builtTx, err := celoProvider.SignGasTransferTx(
+			system.PrivateKey,
+			celo.GasTransferTxOpts{
+				To:       w3.A(p.PublicKey),
+				Nonce:    nonce,
+				Value:    system.GiftableGasValue,
+				GasPrice: celo.FixedMinGas,
+			},
+		)
+		if err != nil {
+			if err := noncestore.Return(ctx, system.PublicKey); err != nil {
+				return err
+			}
+
+			return err
+		}
+
+		rawTx, err := builtTx.MarshalBinary()
+		if err != nil {
+			if err := noncestore.Return(ctx, system.PublicKey); err != nil {
+				return err
+			}
+
+			return err
+		}
+
+		id, err := pg.CreateOTX(ctx, store.OTX{
+			TrackingId: p.TrackingId,
+			Type:       "GIFT_GAS",
+			RawTx:      hexutil.Encode(rawTx),
+			TxHash:     builtTx.Hash().Hex(),
+			From:       system.PublicKey,
+			Data:       hexutil.Encode(builtTx.Data()),
+			GasPrice:   builtTx.GasPrice().Uint64(),
+			Nonce:      builtTx.Nonce(),
+		})
+		if err != nil {
+			if err := noncestore.Return(ctx, system.PublicKey); err != nil {
+				return err
+			}
+
+			return err
+		}
+
+		disptachJobPayload, err := json.Marshal(TxPayload{
+			OtxId: id,
+			Tx:    builtTx,
+		})
+		if err != nil {
+			if err := noncestore.Return(ctx, system.PublicKey); err != nil {
+				return err
+			}
+
+			return err
+		}
+
+		_, err = taskerClient.CreateTask(
+			tasker.TxDispatchTask,
+			tasker.HighPriority,
+			&tasker.Task{
+				Payload: disptachJobPayload,
+			},
+		)
+		if err != nil {
+			if err := noncestore.Return(ctx, system.PublicKey); err != nil {
+				return err
+			}
+
+			return err
+		}
+
+		eventPayload := &accountEventPayload{
+			TrackingId: p.TrackingId,
+		}
+
+		eventJson, err := json.Marshal(eventPayload)
+		if err != nil {
+			return err
+		}
+
+		_, err = js.Publish("CUSTODIAL.giftNewAccountGas", eventJson)
+		if err != nil {
+			if err := noncestore.Return(ctx, system.PublicKey); err != nil {
+				return err
+			}
+
+			return err
+		}
+
+		return nil
+	}
+}
+
+func GiftTokenProcessor(
+	celoProvider *celo.Provider,
+	lockProvider *redislock.Client,
+	noncestore nonce.Noncestore,
+	pg store.Store,
+	system *tasker.SystemContainer,
+	taskerClient *tasker.TaskerClient,
+	js nats.JetStreamContext,
+) func(context.Context, *asynq.Task) error {
+	return func(ctx context.Context, t *asynq.Task) error {
+		var (
+			p AccountPayload
+		)
+
+		if err := json.Unmarshal(t.Payload(), &p); err != nil {
+			return err
+		}
+
+		lock, err := lockProvider.Obtain(ctx, system.LockPrefix+system.PublicKey, system.LockTimeout, nil)
+		if err != nil {
+			return err
+		}
+		defer lock.Release(ctx)
+
+		nonce, err := noncestore.Acquire(ctx, system.PublicKey)
+		if err != nil {
+			return err
+		}
+
+		input, err := system.Abis["mintTo"].EncodeArgs(w3.A(p.PublicKey), system.GiftableTokenValue)
+		if err != nil {
+			return err
+		}
+
+		// TODO: Review gas params.
+		builtTx, err := celoProvider.SignContractExecutionTx(
+			system.PrivateKey,
+			celo.ContractExecutionTxOpts{
+				ContractAddress: system.GiftableToken,
+				InputData:       input,
+				GasPrice:        big.NewInt(20000000000),
+				GasLimit:        system.TokenTransferGasLimit,
+				Nonce:           nonce,
+			},
+		)
+		if err != nil {
+			if err := noncestore.Return(ctx, system.PublicKey); err != nil {
+				return err
+			}
+			return err
+		}
+
+		rawTx, err := builtTx.MarshalBinary()
+		if err != nil {
+			if err := noncestore.Return(ctx, system.PublicKey); err != nil {
+				return err
+			}
+
+			return err
+		}
+
+		id, err := pg.CreateOTX(ctx, store.OTX{
+			TrackingId: p.TrackingId,
+			Type:       "GIFT_VOUCHER",
+			RawTx:      hexutil.Encode(rawTx),
+			TxHash:     builtTx.Hash().Hex(),
+			From:       system.PublicKey,
+			Data:       hexutil.Encode(builtTx.Data()),
+			GasPrice:   builtTx.GasPrice().Uint64(),
+			Nonce:      builtTx.Nonce(),
+		})
+		if err != nil {
+			if err := noncestore.Return(ctx, system.PublicKey); err != nil {
+				return err
+			}
+
+			return err
+		}
+
+		disptachJobPayload, err := json.Marshal(TxPayload{
+			OtxId: id,
+			Tx:    builtTx,
+		})
+		if err != nil {
+			if err := noncestore.Return(ctx, system.PublicKey); err != nil {
+				return err
+			}
+
+			return err
+		}
+
+		_, err = taskerClient.CreateTask(
+			tasker.TxDispatchTask,
+			tasker.HighPriority,
+			&tasker.Task{
+				Payload: disptachJobPayload,
+			},
+		)
+		if err != nil {
+			if err := noncestore.Return(ctx, system.PublicKey); err != nil {
+				return err
+			}
+
+			return err
+		}
+
+		eventPayload := &accountEventPayload{
+			TrackingId: p.TrackingId,
+		}
+
+		eventJson, err := json.Marshal(eventPayload)
+		if err != nil {
+			return err
+		}
+
+		_, err = js.Publish("CUSTODIAL.giftNewAccountVoucher", eventJson)
+		if err != nil {
+			if err := noncestore.Return(ctx, system.PublicKey); err != nil {
+				return err
+			}
+
+			return err
+		}
+
+		return nil
+	}
+}
+
+// TODO: https://github.com/grassrootseconomics/cic-custodial/issues/43
+// TODO:
+func RefillGasProcessor(
+	celoProvider *celo.Provider,
+	nonceProvider nonce.Noncestore,
+	lockProvider *redislock.Client,
+	system *tasker.SystemContainer,
+	taskerClient *tasker.TaskerClient,
+) func(context.Context, *asynq.Task) error {
+	return func(ctx context.Context, t *asynq.Task) error {
+		var (
+			p       AccountPayload
+			balance big.Int
+		)
+		if err := json.Unmarshal(t.Payload(), &p); err != nil {
+			return fmt.Errorf("json.Unmarshal failed: %v: %w", err, asynq.SkipRetry)
+		}
+
+		if err := celoProvider.Client.CallCtx(
+			ctx,
+			eth.Balance(w3.A(p.PublicKey), nil).Returns(&balance),
+		); err != nil {
+			return err
+		}
+
+		if belowThreshold := balance.Cmp(system.GasRefillThreshold); belowThreshold > 0 {
+			return nil
+		}
+
+		lock, err := lockProvider.Obtain(ctx, system.LockPrefix+system.PublicKey, system.LockTimeout, nil)
+		if err != nil {
+			return err
+		}
+		defer lock.Release(ctx)
+
+		nonce, err := nonceProvider.Acquire(ctx, system.PublicKey)
+		if err != nil {
+			return err
+		}
+
+		builtTx, err := celoProvider.SignGasTransferTx(
+			system.PrivateKey,
+			celo.GasTransferTxOpts{
+				To:       w3.A(p.PublicKey),
+				Nonce:    nonce,
+				Value:    system.GasRefillValue,
+				GasPrice: celo.FixedMinGas,
+			},
+		)
+		if err != nil {
+			if err := nonceProvider.Return(ctx, p.PublicKey); err != nil {
+				return err
+			}
+			return fmt.Errorf("nonce.Return failed: %v: %w", err, asynq.SkipRetry)
+		}
+
+		disptachJobPayload, err := json.Marshal(TxPayload{
+			Tx: builtTx,
+		})
+		if err != nil {
+			return fmt.Errorf("json.Marshal failed: %v: %w", err, asynq.SkipRetry)
+		}
+
+		_, err = taskerClient.CreateTask(
+			tasker.TxDispatchTask,
+			tasker.HighPriority,
+			&tasker.Task{
+				Payload: disptachJobPayload,
+			},
+		)
+		if err != nil {
+			return err
+		}
+
+		return nil
+	}
+}

internal/tasker/task/dispatch.go

@@ -8,16 +8,31 @@ import (
 	"github.com/celo-org/celo-blockchain/common"
 	"github.com/celo-org/celo-blockchain/core/types"
 	celo "github.com/grassrootseconomics/cic-celo-sdk"
+	"github.com/grassrootseconomics/cic-custodial/internal/store"
+	"github.com/grassrootseconomics/cic-custodial/pkg/status"
 	"github.com/grassrootseconomics/w3-celo-patch/module/eth"
 	"github.com/hibiken/asynq"
+	"github.com/nats-io/nats.go"
 )
 
-type TxPayload struct {
+type (
+	TxPayload struct {
+		OtxId uint               `json:"otxId"`
 		Tx    *types.Transaction `json:"tx"`
-}
+	}
+
+	dispatchEventPayload struct {
+		OtxId          uint
+		TxHash         string
+		DispatchStatus status.Status
+	}
+)
 
 func TxDispatch(
 	celoProvider *celo.Provider,
+	pg store.Store,
+	js nats.JetStreamContext,
+
 ) func(context.Context, *asynq.Task) error {
 	return func(ctx context.Context, t *asynq.Task) error {
 		var (
@@ -26,13 +41,65 @@ func TxDispatch(
 		)
 
 		if err := json.Unmarshal(t.Payload(), &p); err != nil {
-			return fmt.Errorf("json.Unmarshal failed: %v: %w", err, asynq.SkipRetry)
+			return err
+		}
+
+		dispatchStatus := store.DispatchStatus{
+			OtxId: p.OtxId,
+		}
+
+		eventPayload := &dispatchEventPayload{
+			OtxId: p.OtxId,
 		}
 
 		if err := celoProvider.Client.CallCtx(
 			ctx,
 			eth.SendTx(p.Tx).Returns(&txHash),
 		); err != nil {
+			switch err.Error() {
+			case celo.ErrGasPriceLow:
+				dispatchStatus.Status = status.FailGasPrice
+			case celo.ErrInsufficientGas:
+				dispatchStatus.Status = status.FailInsufficientGas
+			case celo.ErrNonceLow:
+				dispatchStatus.Status = status.FailNonce
+			default:
+				dispatchStatus.Status = status.Unknown
+			}
+
+			_, err := pg.CreateDispatchStatus(ctx, dispatchStatus)
+			if err != nil {
+				return err
+			}
+
+			eventJson, err := json.Marshal(eventPayload)
+			if err != nil {
+				return err
+			}
+
+			_, err = js.Publish("CUSTODIAL.dispatchFail", eventJson, nats.MsgId(txHash.Hex()))
+			if err != nil {
+				return err
+			}
+
+			return fmt.Errorf("dispatch: failed %v: %w", err, asynq.SkipRetry)
+		}
+
+		dispatchStatus.Status = status.Successful
+		_, err := pg.CreateDispatchStatus(ctx, dispatchStatus)
+		if err != nil {
+			return err
+		}
+
+		eventPayload.TxHash = txHash.Hex()
+
+		eventJson, err := json.Marshal(eventPayload)
+		if err != nil {
+			return err
+		}
+
+		_, err = js.Publish("CUSTODIAL.dispatchSuccess", eventJson, nats.MsgId(txHash.Hex()))
+		if err != nil {
 			return err
 		}
 

internal/tasker/task/sign.go

@@ -0,0 +1,182 @@
+package task
+
+import (
+	"context"
+	"encoding/json"
+	"math/big"
+
+	"github.com/bsm/redislock"
+	"github.com/celo-org/celo-blockchain/common/hexutil"
+	celo "github.com/grassrootseconomics/cic-celo-sdk"
+	"github.com/grassrootseconomics/cic-custodial/internal/keystore"
+	"github.com/grassrootseconomics/cic-custodial/internal/nonce"
+	"github.com/grassrootseconomics/cic-custodial/internal/store"
+	"github.com/grassrootseconomics/cic-custodial/internal/tasker"
+	"github.com/grassrootseconomics/w3-celo-patch"
+	"github.com/hibiken/asynq"
+	"github.com/nats-io/nats.go"
+)
+
+type (
+	TransferPayload struct {
+		TrackingId     string `json:"trackingId"`
+		From           string `json:"from" `
+		To             string `json:"to"`
+		VoucherAddress string `json:"voucherAddress"`
+		Amount         int64  `json:"amount"`
+	}
+
+	transferEventPayload struct {
+		DispatchTaskId string `json:"dispatchTaskId"`
+		OTXId          uint   `json:"otxId"`
+		TrackingId     string `json:"trackingId"`
+		TxHash         string `json:"txHash"`
+	}
+)
+
+func SignTransfer(
+	celoProvider *celo.Provider,
+	keystore keystore.Keystore,
+	lockProvider *redislock.Client,
+	noncestore nonce.Noncestore,
+	pg store.Store,
+	system *tasker.SystemContainer,
+	taskerClient *tasker.TaskerClient,
+	js nats.JetStreamContext,
+) func(context.Context, *asynq.Task) error {
+	return func(ctx context.Context, t *asynq.Task) error {
+		var (
+			p TransferPayload
+		)
+
+		if err := json.Unmarshal(t.Payload(), &p); err != nil {
+			return err
+		}
+
+		lock, err := lockProvider.Obtain(
+			ctx,
+			system.LockPrefix+p.From,
+			system.LockTimeout,
+			nil,
+		)
+		if err != nil {
+			return err
+		}
+		defer lock.Release(ctx)
+
+		key, err := keystore.LoadPrivateKey(ctx, p.From)
+		if err != nil {
+			return err
+		}
+
+		nonce, err := noncestore.Acquire(ctx, p.From)
+		if err != nil {
+			return err
+		}
+
+		input, err := system.Abis["transfer"].EncodeArgs(w3.A(p.To), big.NewInt(p.Amount))
+		if err != nil {
+			return err
+		}
+
+		// TODO: Review gas params.
+		builtTx, err := celoProvider.SignContractExecutionTx(
+			key,
+			celo.ContractExecutionTxOpts{
+				ContractAddress: w3.A(p.VoucherAddress),
+				InputData:       input,
+				GasPrice:        big.NewInt(20000000000),
+				GasLimit:        system.TokenTransferGasLimit,
+				Nonce:           nonce,
+			},
+		)
+		if err != nil {
+			if err := noncestore.Return(ctx, p.From); err != nil {
+				return err
+			}
+
+			return err
+		}
+
+		rawTx, err := builtTx.MarshalBinary()
+		if err != nil {
+			if err := noncestore.Return(ctx, p.From); err != nil {
+				return err
+			}
+
+			return err
+		}
+
+		id, err := pg.CreateOTX(ctx, store.OTX{
+			TrackingId: p.TrackingId,
+			Type:       "TRANSFER",
+			RawTx:      hexutil.Encode(rawTx),
+			TxHash:     builtTx.Hash().Hex(),
+			From:       p.From,
+			Data:       hexutil.Encode(builtTx.Data()),
+			GasPrice:   builtTx.GasPrice().Uint64(),
+			Nonce:      builtTx.Nonce(),
+		})
+		if err != nil {
+			if err := noncestore.Return(ctx, p.From); err != nil {
+				return err
+			}
+
+			return err
+		}
+
+		disptachJobPayload, err := json.Marshal(TxPayload{
+			OtxId: id,
+			Tx:    builtTx,
+		})
+		if err != nil {
+			if err := noncestore.Return(ctx, p.From); err != nil {
+				return err
+			}
+
+			return err
+		}
+
+		dispatchTask, err := taskerClient.CreateTask(
+			tasker.TxDispatchTask,
+			tasker.HighPriority,
+			&tasker.Task{
+				Payload: disptachJobPayload,
+			},
+		)
+		if err != nil {
+			if err := noncestore.Return(ctx, p.From); err != nil {
+				return err
+			}
+
+			return err
+		}
+
+		eventPayload := &transferEventPayload{
+			DispatchTaskId: dispatchTask.ID,
+			OTXId:          id,
+			TrackingId:     p.TrackingId,
+			TxHash:         builtTx.Hash().Hex(),
+		}
+
+		eventJson, err := json.Marshal(eventPayload)
+		if err != nil {
+			if err := noncestore.Return(ctx, p.From); err != nil {
+				return err
+			}
+
+			return err
+		}
+
+		_, err = js.Publish("CUSTODIAL.transferSign", eventJson, nats.MsgId(builtTx.Hash().Hex()))
+		if err != nil {
+			if err := noncestore.Return(ctx, p.From); err != nil {
+				return err
+			}
+
+			return err
+		}
+
+		return nil
+	}
+}

internal/tasker/task/system.go

@@ -1,268 +0,0 @@
-package task
-
-import (
-	"context"
-	"encoding/json"
-	"fmt"
-	"math/big"
-
-	"github.com/bsm/redislock"
-	celo "github.com/grassrootseconomics/cic-celo-sdk"
-	"github.com/grassrootseconomics/cic-custodial/internal/nonce"
-	"github.com/grassrootseconomics/cic-custodial/internal/tasker"
-	"github.com/grassrootseconomics/w3-celo-patch"
-	"github.com/grassrootseconomics/w3-celo-patch/module/eth"
-	"github.com/hibiken/asynq"
-)
-
-type SystemPayload struct {
-	PublicKey string `json:"publicKey"`
-}
-
-func PrepareAccount(
-	nonceProvider nonce.Noncestore,
-	taskerClient *tasker.TaskerClient,
-) func(context.Context, *asynq.Task) error {
-	return func(ctx context.Context, t *asynq.Task) error {
-		var p SystemPayload
-		if err := json.Unmarshal(t.Payload(), &p); err != nil {
-			return fmt.Errorf("json.Unmarshal failed: %v: %w", err, asynq.SkipRetry)
-		}
-
-		if err := nonceProvider.SetNewAccountNonce(ctx, p.PublicKey); err != nil {
-			return err
-		}
-
-		_, err := taskerClient.CreateTask(
-			tasker.GiftGasTask,
-			tasker.DefaultPriority,
-			&tasker.Task{
-				Payload: t.Payload(),
-			},
-		)
-		if err != nil {
-			return err
-		}
-
-		_, err = taskerClient.CreateTask(
-			tasker.GiftTokenTask,
-			tasker.DefaultPriority,
-			&tasker.Task{
-				Payload: t.Payload(),
-			},
-		)
-		if err != nil {
-			return err
-		}
-
-		return nil
-	}
-}
-
-func GiftGasProcessor(
-	celoProvider *celo.Provider,
-	nonceProvider nonce.Noncestore,
-	lockProvider *redislock.Client,
-	system *tasker.SystemContainer,
-	taskerClient *tasker.TaskerClient,
-) func(context.Context, *asynq.Task) error {
-	return func(ctx context.Context, t *asynq.Task) error {
-		var p SystemPayload
-		if err := json.Unmarshal(t.Payload(), &p); err != nil {
-			return fmt.Errorf("json.Unmarshal failed: %v: %w", err, asynq.SkipRetry)
-		}
-
-		lock, err := lockProvider.Obtain(ctx, system.LockPrefix+system.PublicKey, system.LockTimeout, nil)
-		if err != nil {
-			return err
-		}
-		defer lock.Release(ctx)
-
-		nonce, err := nonceProvider.Acquire(ctx, system.PublicKey)
-		if err != nil {
-			return err
-		}
-
-		builtTx, err := celoProvider.SignGasTransferTx(
-			system.PrivateKey,
-			celo.GasTransferTxOpts{
-				To:       w3.A(p.PublicKey),
-				Nonce:    nonce,
-				Value:    system.GiftableGasValue,
-				GasPrice: celo.FixedMinGas,
-			},
-		)
-		if err != nil {
-			if err := nonceProvider.Return(ctx, p.PublicKey); err != nil {
-				return err
-			}
-			return fmt.Errorf("nonce.Return failed: %v: %w", err, asynq.SkipRetry)
-		}
-
-		disptachJobPayload, err := json.Marshal(TxPayload{
-			Tx: builtTx,
-		})
-		if err != nil {
-			return fmt.Errorf("json.Marshal failed: %v: %w", err, asynq.SkipRetry)
-		}
-
-		_, err = taskerClient.CreateTask(
-			tasker.TxDispatchTask,
-			tasker.HighPriority,
-			&tasker.Task{
-				Payload: disptachJobPayload,
-			},
-		)
-		if err != nil {
-			return err
-		}
-
-		return nil
-	}
-}
-
-func GiftTokenProcessor(
-	celoProvider *celo.Provider,
-	nonceProvider nonce.Noncestore,
-	lockProvider *redislock.Client,
-	system *tasker.SystemContainer,
-	taskerClient *tasker.TaskerClient,
-) func(context.Context, *asynq.Task) error {
-	return func(ctx context.Context, t *asynq.Task) error {
-		var p SystemPayload
-		if err := json.Unmarshal(t.Payload(), &p); err != nil {
-			return fmt.Errorf("json.Unmarshal failed: %v: %w", err, asynq.SkipRetry)
-		}
-
-		publicKey := w3.A(p.PublicKey)
-
-		lock, err := lockProvider.Obtain(ctx, system.LockPrefix+system.PublicKey, system.LockTimeout, nil)
-		if err != nil {
-			return err
-		}
-		defer lock.Release(ctx)
-
-		nonce, err := nonceProvider.Acquire(ctx, system.PublicKey)
-		if err != nil {
-			return err
-		}
-
-		input, err := system.Abis["mint"].EncodeArgs(publicKey, system.GiftableTokenValue)
-		if err != nil {
-			return fmt.Errorf("ABI encode failed %v: %w", err, asynq.SkipRetry)
-		}
-
-		builtTx, err := celoProvider.SignContractExecutionTx(
-			system.PrivateKey,
-			celo.ContractExecutionTxOpts{
-				ContractAddress: system.GiftableToken,
-				InputData:       input,
-				GasPrice:        celo.FixedMinGas,
-				GasLimit:        system.TokenTransferGasLimit,
-				Nonce:           nonce,
-			},
-		)
-		if err != nil {
-			if err := nonceProvider.Return(ctx, p.PublicKey); err != nil {
-				return err
-			}
-			return fmt.Errorf("nonce.Return failed: %v: %w", err, asynq.SkipRetry)
-		}
-
-		disptachJobPayload, err := json.Marshal(TxPayload{
-			Tx: builtTx,
-		})
-		if err != nil {
-			return fmt.Errorf("json.Marshal failed: %v: %w", err, asynq.SkipRetry)
-		}
-
-		_, err = taskerClient.CreateTask(
-			tasker.TxDispatchTask,
-			tasker.HighPriority,
-			&tasker.Task{
-				Payload: disptachJobPayload,
-			},
-		)
-		if err != nil {
-			return err
-		}
-
-		return nil
-	}
-}
-
-func RefillGasProcessor(
-	celoProvider *celo.Provider,
-	nonceProvider nonce.Noncestore,
-	lockProvider *redislock.Client,
-	system *tasker.SystemContainer,
-	taskerClient *tasker.TaskerClient,
-) func(context.Context, *asynq.Task) error {
-	return func(ctx context.Context, t *asynq.Task) error {
-		var (
-			p       SystemPayload
-			balance big.Int
-		)
-		if err := json.Unmarshal(t.Payload(), &p); err != nil {
-			return fmt.Errorf("json.Unmarshal failed: %v: %w", err, asynq.SkipRetry)
-		}
-
-		if err := celoProvider.Client.CallCtx(
-			ctx,
-			eth.Balance(w3.A(p.PublicKey), nil).Returns(&balance),
-		); err != nil {
-			return err
-		}
-
-		if belowThreshold := balance.Cmp(system.GasRefillThreshold); belowThreshold > 0 {
-			return nil
-		}
-
-		lock, err := lockProvider.Obtain(ctx, system.LockPrefix+system.PublicKey, system.LockTimeout, nil)
-		if err != nil {
-			return err
-		}
-		defer lock.Release(ctx)
-
-		nonce, err := nonceProvider.Acquire(ctx, system.PublicKey)
-		if err != nil {
-			return err
-		}
-
-		builtTx, err := celoProvider.SignGasTransferTx(
-			system.PrivateKey,
-			celo.GasTransferTxOpts{
-				To:       w3.A(p.PublicKey),
-				Nonce:    nonce,
-				Value:    system.GasRefillValue,
-				GasPrice: celo.FixedMinGas,
-			},
-		)
-		if err != nil {
-			if err := nonceProvider.Return(ctx, p.PublicKey); err != nil {
-				return err
-			}
-			return fmt.Errorf("nonce.Return failed: %v: %w", err, asynq.SkipRetry)
-		}
-
-		disptachJobPayload, err := json.Marshal(TxPayload{
-			Tx: builtTx,
-		})
-		if err != nil {
-			return fmt.Errorf("json.Marshal failed: %v: %w", err, asynq.SkipRetry)
-		}
-
-		_, err = taskerClient.CreateTask(
-			tasker.TxDispatchTask,
-			tasker.HighPriority,
-			&tasker.Task{
-				Payload: disptachJobPayload,
-			},
-		)
-		if err != nil {
-			return err
-		}
-
-		return nil
-	}
-}

internal/tasker/task/transfer.go

@@ -1,124 +0,0 @@
-package task
-
-import (
-	"context"
-	"encoding/json"
-	"fmt"
-	"math"
-	"math/big"
-	"strconv"
-
-	"github.com/bsm/redislock"
-	celo "github.com/grassrootseconomics/cic-celo-sdk"
-	"github.com/grassrootseconomics/cic-custodial/internal/keystore"
-	"github.com/grassrootseconomics/cic-custodial/internal/nonce"
-	"github.com/grassrootseconomics/cic-custodial/internal/tasker"
-	"github.com/grassrootseconomics/w3-celo-patch"
-	"github.com/hibiken/asynq"
-)
-
-type TransferPayload struct {
-	From           string `json:"from"`
-	To             string `json:"to"`
-	VoucherAddress string `json:"voucherAddress"`
-	Amount         string `json:"amount"`
-}
-
-func TransferToken(
-	celoProvider *celo.Provider,
-	nonceProvider nonce.Noncestore,
-	keystoreProvider keystore.Keystore,
-	lockProvider *redislock.Client,
-	system *tasker.SystemContainer,
-	taskerClient *tasker.TaskerClient,
-) func(context.Context, *asynq.Task) error {
-	return func(ctx context.Context, t *asynq.Task) error {
-		var p TransferPayload
-
-		if err := json.Unmarshal(t.Payload(), &p); err != nil {
-			return fmt.Errorf("json.Unmarshal failed: %v: %w", err, asynq.SkipRetry)
-		}
-
-		lock, err := lockProvider.Obtain(ctx, system.LockPrefix+p.From, system.LockTimeout, nil)
-		if err != nil {
-			return err
-		}
-		defer lock.Release(ctx)
-
-		nonce, err := nonceProvider.Acquire(ctx, p.From)
-		if err != nil {
-			return err
-		}
-
-		key, err := keystoreProvider.LoadPrivateKey(ctx, p.From)
-		if err != nil {
-			return err
-		}
-
-		input, err := system.Abis["transfer"].EncodeArgs(w3.A(p.To), parseTransferValue(p.Amount, system.TokenDecimals))
-		if err != nil {
-			return fmt.Errorf("ABI encode failed %v: %w", err, asynq.SkipRetry)
-		}
-
-		builtTx, err := celoProvider.SignContractExecutionTx(
-			key,
-			celo.ContractExecutionTxOpts{
-				ContractAddress: system.GiftableToken,
-				InputData:       input,
-				GasPrice:        celo.FixedMinGas,
-				GasLimit:        system.TokenTransferGasLimit,
-				Nonce:           nonce,
-			},
-		)
-		if err != nil {
-			if err := nonceProvider.Return(ctx, p.From); err != nil {
-				return err
-			}
-			return fmt.Errorf("nonce.Return failed: %v: %w", err, asynq.SkipRetry)
-		}
-
-		disptachJobPayload, err := json.Marshal(TxPayload{
-			Tx: builtTx,
-		})
-		if err != nil {
-			return fmt.Errorf("json.Marshal failed: %v: %w", err, asynq.SkipRetry)
-		}
-
-		_, err = taskerClient.CreateTask(
-			tasker.TxDispatchTask,
-			tasker.HighPriority,
-			&tasker.Task{
-				Payload: disptachJobPayload,
-			},
-		)
-		if err != nil {
-			return err
-		}
-
-		gasRefillPayload, err := json.Marshal(SystemPayload{
-			PublicKey: p.From,
-		})
-		if err != nil {
-			return fmt.Errorf("json.Marshal failed: %v: %w", err, asynq.SkipRetry)
-		}
-
-		_, err = taskerClient.CreateTask(
-			tasker.RefillGasTask,
-			tasker.DefaultPriority,
-			&tasker.Task{
-				Payload: gasRefillPayload,
-			},
-		)
-		if err != nil {
-			return err
-		}
-
-		return nil
-	}
-}
-
-func parseTransferValue(value string, tokenDecimals int) *big.Int {
-	floatValue, _ := strconv.ParseFloat(value, 64)
-
-	return big.NewInt(int64(floatValue * math.Pow10(tokenDecimals)))
-}

internal/tasker/task/transfer_test.go

@@ -1,68 +0,0 @@
-package task
-
-import (
-	"math/big"
-	"reflect"
-	"testing"
-)
-
-func Test_parseTransferValue(t *testing.T) {
-	type args struct {
-		value         string
-		tokenDecimals int
-	}
-	tests := []struct {
-		name string
-		args args
-		want *big.Int
-	}{
-		{
-			name: "zero value string",
-			args: args{
-				value:         "0",
-				tokenDecimals: 6,
-			},
-			want: big.NewInt(0),
-		},
-		{
-			name: "fixed value string",
-			args: args{
-				value:         "2",
-				tokenDecimals: 6,
-			},
-			want: big.NewInt(2000000),
-		},
-		{
-			name: "float (2 d.p) value string",
-			args: args{
-				value:         "2.19",
-				tokenDecimals: 6,
-			},
-			want: big.NewInt(2190000),
-		},
-		{
-			name: "float (6 d.p) value string",
-			args: args{
-				value:         "2.123456",
-				tokenDecimals: 6,
-			},
-			want: big.NewInt(2123456),
-		},
-		{
-			name: "float (10 d.p) value string",
-			args: args{
-				value:         "2.1234567891",
-				tokenDecimals: 6,
-			},
-			want: big.NewInt(2123456),
-		},
-	}
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			got := parseTransferValue(tt.args.value, tt.args.tokenDecimals)
-			if !reflect.DeepEqual(got, tt.want) {
-				t.Errorf("parseValue() = %v, want %v", got, tt.want)
-			}
-		})
-	}
-}

internal/tasker/types.go

@@ -17,6 +17,8 @@ type (
 
 type SystemContainer struct {
 	Abis                  map[string]*w3.Func
+	AccountIndexContract  common.Address
+	GasFaucetContract     common.Address
 	GasRefillThreshold    *big.Int
 	GasRefillValue        *big.Int
 	GiftableGasValue      *big.Int
@@ -37,12 +39,13 @@ type Task struct {
 
 const (
 	PrepareAccountTask     TaskName = "sys:prepare_account"
+	RegisterAccountOnChain TaskName = "sys:register_account"
 	GiftGasTask            TaskName = "sys:gift_gas"
 	GiftTokenTask          TaskName = "sys:gift_token"
 	RefillGasTask          TaskName = "admin:refill_gas"
 	SweepGasTask           TaskName = "admin:sweep_gas"
 	AdminTokenApprovalTask TaskName = "admin:token_approval"
-	TransferTokenTask      TaskName = "usr:transfer_token"
+	SignTransferTask       TaskName = "usr:sign_transfer"
 	TxDispatchTask         TaskName = "rpc:dispatch"
 )
 

migrations/001_keystore.sql

@@ -0,0 +1,8 @@
+-- Keystore table
+CREATE TABLE IF NOT EXISTS keystore (
+    id INT GENERATED ALWAYS AS IDENTITY PRIMARY KEY,
+    public_key TEXT NOT NULL,
+    private_key TEXT NOT NULL,
+    active BOOLEAN DEFAULT true,
+    created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP
+);

migrations/002_custodial_db.sql

@@ -0,0 +1,23 @@
+-- Origin tx table
+CREATE TABLE IF NOT EXISTS otx (
+    id INT GENERATED ALWAYS AS IDENTITY PRIMARY KEY,
+    tracking_id TEXT NOT NULL,
+    "type" TEXT NOT NULL,
+    raw_tx TEXT NOT NULL,
+    tx_hash TEXT NOT NULL,
+    "from" TEXT NOT NULL,
+    "data" TEXT NOT NULL,
+    gas_price bigint NOT NULL,
+    nonce int NOT NULL,
+    created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP
+);
+CREATE INDEX IF NOT EXISTS tx_hash_idx ON otx USING hash(tx_hash);
+CREATE INDEX IF NOT EXISTS from_idx ON otx USING hash("from");
+
+-- Dispatch status table
+CREATE TABLE IF NOT EXISTS dispatch (
+    id INT GENERATED ALWAYS AS IDENTITY PRIMARY KEY,
+    otx_id INT REFERENCES otx(id),
+    "status" TEXT NOT NULL,
+    created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP
+);

migrations/tern.conf

@@ -0,0 +1,7 @@
+[database]
+host = {{env "PG_HOST"}}
+port = {{env "PG_PORT"}}
+database = {{env "PG_DB"}}
+user = {{env "PG_USER"}}
+password = {{env "PG_PASSWORD"}}
+sslmode = prefer

pkg/keypair/keypair.go

@@ -12,6 +12,7 @@ type Key struct {
 	Private string
 }
 
+// Generate creates a new keypair from internally randomized entropy.
 func Generate() (Key, error) {
 	privateKey, err := crypto.GenerateKey()
 	if err != nil {

pkg/status/status.go

@@ -0,0 +1,11 @@
+package status
+
+type Status string
+
+const (
+	FailGasPrice        = "FAIL_LOW_GAS_PRICE"
+	FailInsufficientGas = "FAIL_NO_GAS"
+	FailNonce           = "FAIL_LOW_NONCE"
+	Successful          = "SUCCESSFUL"
+	Unknown             = "UNKNOWN"
+)

queries.sql

@@ -0,0 +1,47 @@
+-- Keystore queries
+
+--name: write-key-pair
+-- Save hex encoded private key
+-- $1: public_key
+-- $2: private_key
+INSERT INTO keystore(public_key, private_key) VALUES($1, $2) RETURNING id
+
+--name: load-key-pair
+-- Load saved key pair
+-- $1: public_key
+SELECT private_key FROM keystore WHERE public_key=$1
+
+-- OTX queries
+
+--name: create-otx
+-- Create a new locally originating tx
+-- $1: tracking_id
+-- $2: type
+-- $3: raw_tx
+-- $4: tx_hash
+-- $5: from
+-- $6: data
+-- $7: gas_price
+-- $8: nonce
+INSERT INTO otx(
+    tracking_id,
+    "type",
+    raw_tx,
+    tx_hash,
+    "from",
+    "data",
+    gas_price,
+    nonce
+) VALUES($1, $2, $3, $4, $5, $6, $7, $8) RETURNING id
+
+
+-- Dispatch status queries
+
+--name: create-dispatch-status
+-- Create a new dispatch status
+-- $1: otx_id
+-- $2: status
+INSERT INTO dispatch(
+    otx_id,
+    "status"
+) VALUES($1, $2) RETURNING id