[Rosetta] Previewnet integration

Makefile

@@ -2,20 +2,16 @@
 
 all: build
 
-relic:
-	./environ/build-relic.py
-
 go-build:
-	go build -tags relic -o server cmd/server/server.go
+	go build -o server cmd/server/server.go
 
-build: relic go-build
+build: go-build
 
 deps:
 	go mod download -x
 
 lint:
 	@go mod tidy
-	@staticcheck -tags relic ./...
 
 proto:
 	@echo ">> Generating model/model.pb.go"

README.md

@@ -358,7 +358,7 @@ config file:
     mode. During offline mode, only certain Rosetta API endpoints are
     functional.
 
-* `network: "mainnet" | "testnet" | "canary" | "localnet"`
+* `network: "mainnet" | "testnet" | "previewnet" | "localnet"`
 
   * This defines the specific Flow chain that is being used.
 

access/access.go

@@ -7,19 +7,20 @@ import (
 	"crypto/x509"
 	"encoding/hex"
 	"fmt"
-	"go.opentelemetry.io/otel/attribute"
-	"go.opentelemetry.io/otel/metric"
 	"math/rand"
 	"strconv"
 	"strings"
 	"time"
 
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/metric"
+
 	grpc_middleware "github.com/grpc-ecosystem/go-grpc-middleware"
 	libp2ptls "github.com/libp2p/go-libp2p/p2p/security/tls"
 	"github.com/onflow/cadence"
 	jsoncdc "github.com/onflow/cadence/encoding/json"
 	"github.com/onflow/cadence/runtime/common"
-	"github.com/onflow/flow-go/crypto"
+	"github.com/onflow/crypto"
 	"github.com/onflow/flow-go/network/p2p/keyutils"
 	"github.com/onflow/flow/protobuf/go/flow/access"
 	"github.com/onflow/flow/protobuf/go/flow/entities"

api/account_service.go

@@ -161,9 +161,9 @@ func (s *Server) getSequenceNumber(ctx context.Context, addr []byte, block *mode
 		if err != nil {
 			return 0, err
 		}
-		nonce, ok := resp.ToGoValue().(int64)
+		nonce, ok := resp.(cadence.Int64)
 		if !ok {
-			return 0, fmt.Errorf("failed to convert get_proxy_nonce result to int64")
+			return 0, fmt.Errorf("failed to convert get_proxy_nonce result to cadence.Int64")
 		}
 		if nonce >= 0 {
 			return uint64(nonce), nil

api/call_service.go

@@ -132,7 +132,7 @@ func (s *Server) accountPublicKeys(ctx context.Context, params map[string]interf
 		if err != nil {
 			return nil, handleExecutionErr(err, "execute get_proxy_public_key")
 		}
-		rawKey, ok := resp.ToGoValue().(string)
+		rawKey, ok := resp.(cadence.String)
 		if !ok {
 			return nil, wrapErrorf(
 				errInternal, "failed to convert get_proxy_public_key result to string",
@@ -146,7 +146,7 @@ func (s *Server) accountPublicKeys(ctx context.Context, params map[string]interf
 					len(keys),
 				)
 			}
-			pub, err := hex.DecodeString(rawKey)
+			pub, err := hex.DecodeString(rawKey.String())
 			if err != nil {
 				return nil, wrapErrorf(
 					errInternal,
@@ -246,14 +246,28 @@ func (s *Server) getOnchainData(ctx context.Context, addr []byte, block []byte)
 	if err != nil {
 		return nil, handleExecutionErr(err, "execute "+scriptName)
 	}
-	fields, ok := resp.ToGoValue().([]interface{})
+	array, ok := resp.(cadence.Array)
 	if !ok {
 		return nil, wrapErrorf(
 			errInternal,
-			"failed to convert %s result to Go slice",
+			"failed to convert %s result to cadence.Array",
 			scriptName,
 		)
 	}
+	fields := []interface{}{}
+
+	for _, el := range array.Values {
+		field, ok := el.(interface{})
+		if !ok {
+			return nil, wrapErrorf(
+				errInternal,
+				"failed to convert %s result to interface{}",
+				scriptName,
+			)
+		}
+		fields = append(fields, field)
+	}
+
 	if len(fields) != 3 {
 		return nil, wrapErrorf(
 			errInternal,