Drop deprecated code for 0.107.0

ROADMAP.md

@@ -25,51 +25,6 @@ APIs/commands/configurations will be removed and here is a list of scheduled
 breaking changes. Consider changing your code/scripts/configurations if you're
 using anything mentioned here.
 
-## GetPeers RPC server response type changes and RPC client support
-
-GetPeers RPC command returns a list of Peers where the port type has changed from 
-string to uint16 to match C#. The RPC client currently supports unmarshalling both
-formats. 
-
-Removal of Peer unmarshalling with string based ports is scheduled for Jun-Jul 2024
-(~0.107.0 release).
-
-## `NEOBalance` from stack item
-
-We check struct items count before convert LastGasPerVote to let RPC client be compatible with
-old versions.
-
-Removal of this compatiblility code is scheduled for Jun-Jul 2024.
-
-## `serv_node_version` Prometheus gauge metric
-
-This metric is replaced by the new `neogo_version` and `server_id` Prometheus gauge
-metrics with proper version formatting. `neogo_version` contains NeoGo version
-hidden under `version` label and `server_id` contains network server ID hidden
-under `server_id` label.
-
-Removal of `serv_node_version` is scheduled for Jun-Jul 2024 (~0.107.0 release).
-
-## RPC error codes returned by old versions and C#-nodes 
-
-NeoGo retains certain deprecated error codes: `neorpc.ErrCompatGeneric`, 
-`neorpc.ErrCompatNoOpenedWallet`. They returned by nodes not compliant with the 
-neo-project/proposals#156 (NeoGo pre-0.102.0 and all known C# versions).
-
-Removal of the deprecated RPC error codes is planned for Jun-Jul 2024 (~0.107.0
-release).
-
-## Block based web-socket waiter transaction awaiting
-
-Web-socket RPC based `waiter.EventWaiter` uses `header_of_added_block` notifications
-subscription to manage transaction awaiting. To support old NeoGo RPC servers
-(older than 0.105.0) that do not have block headers subscription ability,
-event-based waiter fallbacks to the old way of block monitoring with
-`block_added` notifications subscription.
-
-Removal of stale RPC server compatibility code from `waiter.EventWaiter` is
-scheduled for Jun-Jul 2024 (~0.107.0 release).
-
 ## Dump*Slot() methods of `vm.Context`
 
 The following new methods have been exposed to give access to VM context slot contents
@@ -78,4 +33,4 @@ with greater flexibility:
 - `LocalsSlot`
 - `StaticsSlot`.
 
-Removal of the `Dump*Slot()` methods are scheduled for the 0.108.0 release.
+Removal of the `Dump*Slot()` methods are scheduled for the 0.108.0 release.

pkg/core/state/native_state.go

@@ -133,7 +133,7 @@
 // FromStackItem converts stackitem.Item to NEOBalance.
 func (s *NEOBalance) FromStackItem(item stackitem.Item) error {
 	structItem, ok := item.Value().([]stackitem.Item)
-	if !ok || len(structItem) < 3 {
+	if !ok || len(structItem) < 4 {
 		return errors.New("invalid stackitem length")
 	}
 	balance, err := structItem[0].TryInteger()
@@ -159,12 +159,10 @@
 		}
 		s.VoteTo = pub
 	}
-	if len(structItem) >= 4 {
-		lastGasPerVote, err := structItem[3].TryInteger()
-		if err != nil {
-			return fmt.Errorf("invalid last vote reward per neo stackitem: %w", err)
-		}
-		s.LastGasPerVote = *lastGasPerVote
+	lastGasPerVote, err := structItem[3].TryInteger()
+	if err != nil {
+		return fmt.Errorf("invalid last vote reward per neo stackitem: %w", err)
 	}
+	s.LastGasPerVote = *lastGasPerVote
 	return nil
 }

pkg/neorpc/errors.go

@@ -138,21 +138,6 @@ const (
 	ErrExecutionFailedCode = -608
 )
 
-var (
-	// ErrCompatGeneric is an error returned by nodes not compliant with the neo-project/proposals#156
-	// (NeoGo pre-0.102.0 and all known C# versions).
-	// It can be returned for any call and doesn't have any specific meaning.
-	//
-	// Deprecated: to be removed after all nodes adopt new error standard.
-	ErrCompatGeneric = NewErrorWithCode(-100, "RPC error")
-
-	// ErrCompatNoOpenedWallet is an error code returned by nodes not compliant with the neo-project/proposals#156
-	// (all known C# versions, NeoGo never used this code). It can be returned for wallet-related operations.
-	//
-	// Deprecated: to be removed after all nodes adopt new error standard.
-	ErrCompatNoOpenedWallet = NewErrorWithCode(-400, "No opened wallet")
-)
-
 var (
 	// ErrInvalidParams represents a generic "Invalid params" error.
 	ErrInvalidParams = NewInvalidParamsError("Invalid params")

pkg/neorpc/result/peers.go

@@ -1,7 +1,6 @@
 package result
 
 import (
-	"encoding/json"
 	"net"
 	"strconv"
 
@@ -86,37 +85,6 @@ func (p *Peers) addConnectedPeers(connectedPeers []network.PeerInfo) {
 	}
 }
 
-func (p *Peer) UnmarshalJSON(data []byte) error {
-	type NewPeer Peer
-	var np NewPeer
-
-	err := json.Unmarshal(data, &np)
-	if err == nil {
-		*p = Peer(np)
-		return nil
-	}
-
-	type OldPeer struct {
-		Address string `json:"address"`
-		Port    string `json:"port"`
-	}
-	var op OldPeer
-
-	err = json.Unmarshal(data, &op)
-	if err == nil {
-		port, err := strconv.ParseUint(op.Port, 10, 16)
-		if err != nil {
-			return err
-		}
-
-		*p = Peer{
-			Address: op.Address,
-			Port:    uint16(port),
-		}
-	}
-	return err
-}
-
 // parseHostPort parses host and port from the given address.
 // An improperly formatted port string will return zero port.
 func parseHostPort(addr string) (string, uint16, error) {

pkg/neorpc/result/peers_test.go

@@ -37,11 +37,8 @@ func TestGetPeers(t *testing.T) {
 	require.Equal(t, uint16(20333), gp.Bad[0].Port)
 
 	gps := GetPeers{}
-	oldPeerFormat := `{"unconnected": [{"address": "20.109.188.128","port": "10333"},{"address": "27.188.182.47","port": "10333"}],"connected": [{"address": "54.227.43.72","port": "10333"},{"address": "157.90.177.38","port": "10333"}],"bad": [{"address": "5.226.142.226","port": "10333"}]}`
-	err := json.Unmarshal([]byte(oldPeerFormat), &gps)
-	require.NoError(t, err)
 	newPeerFormat := `{"unconnected": [{"address": "20.109.188.128","port": 10333},{"address": "27.188.182.47","port": 10333}],"connected": [{"address": "54.227.43.72","port": 10333},{"address": "157.90.177.38","port": 10333}],"bad": [{"address": "5.226.142.226","port": 10333},{"address": "54.208.117.178","port": 10333}]}`
-	err = json.Unmarshal([]byte(newPeerFormat), &gps)
+	err := json.Unmarshal([]byte(newPeerFormat), &gps)
 	require.NoError(t, err)
 	badIntFormat := `{"unconnected": [{"address": "20.109.188.128","port": 65536}],"connected": [],"bad": []}`
 	err = json.Unmarshal([]byte(badIntFormat), &gps)

pkg/network/prometheus.go

@@ -25,16 +25,6 @@ var (
 		},
 	)
 
-	// Deprecated: please, use neogoVersion and serverID instead.
-	servAndNodeVersion = prometheus.NewGaugeVec(
-		prometheus.GaugeOpts{
-			Help:      "Server and Node versions",
-			Name:      "serv_node_version",
-			Namespace: "neogo",
-		},
-		[]string{"description", "value"},
-	)
-
 	neogoVersion = prometheus.NewGaugeVec(
 		prometheus.GaugeOpts{
 			Help:      "NeoGo version",
@@ -82,7 +72,6 @@ func init() {
 	prometheus.MustRegister(
 		estimatedNetworkSize,
 		peersConnected,
-		servAndNodeVersion,
 		neogoVersion,
 		serverID,
 		poolCount,
@@ -122,12 +111,6 @@ func updatePeersConnectedMetric(pConnected int) {
 	peersConnected.Set(float64(pConnected))
 }
 
-// Deprecated: please, use setNeoGoVersion and setSeverID instead.
-func setServerAndNodeVersions(nodeVer string, serverID string) {
-	servAndNodeVersion.WithLabelValues("Node version: ", nodeVer).Add(0)
-	servAndNodeVersion.WithLabelValues("Server id: ", serverID).Add(0)
-}
-
 func setNeoGoVersion(nodeVer string) {
 	neogoVersion.WithLabelValues(nodeVer).Add(1)
 }

pkg/network/server.go

@@ -318,7 +318,6 @@ func (s *Server) Start() {
 	for _, tr := range s.transports {
 		go tr.Accept()
 	}
-	setServerAndNodeVersions(s.UserAgent, strconv.FormatUint(uint64(s.id), 10))
 	setNeoGoVersion(config.Version)
 	setSeverID(strconv.FormatUint(uint64(s.id), 10))
 	go s.run()

pkg/rpcclient/neo/neo_test.go

@@ -105,6 +105,7 @@ func TestGetAccountState(t *testing.T) {
 				stackitem.Make(100500),
 				stackitem.Make(42),
 				stackitem.Null{},
+				stackitem.Make(0),
 			}),
 		},
 	}

pkg/rpcclient/waiter/waiter.go

@@ -74,7 +74,6 @@
 		RPCPollingBased
 
 		ReceiveHeadersOfAddedBlocks(flt *neorpc.BlockFilter, rcvr chan<- *block.Header) (string, error)
-		ReceiveBlocks(flt *neorpc.BlockFilter, rcvr chan<- *block.Block) (string, error)
 		ReceiveExecutions(flt *neorpc.ExecutionFilter, rcvr chan<- *state.AppExecResult) (string, error)
 		Unsubscribe(id string) error
 	}
@@ -282,7 +281,6 @@
 		wsWaitErr     error
 		waitersActive int
 		hRcvr         = make(chan *block.Header, 2)
-		bRcvr         = make(chan *block.Block, 2)
 		aerRcvr       = make(chan *state.AppExecResult, len(hashes))
 		unsubErrs     = make(chan error)
 		exit          = make(chan struct{})
@@ -292,13 +290,7 @@
 	since := vub
 	blocksID, err := w.ws.ReceiveHeadersOfAddedBlocks(&neorpc.BlockFilter{Since: &since}, hRcvr)
 	if err != nil {
-		// Falling back to block-based subscription.
-		if errors.Is(err, neorpc.ErrInvalidParams) {
-			blocksID, err = w.ws.ReceiveBlocks(&neorpc.BlockFilter{Since: &since}, bRcvr)
-		}
-	}
-	if err != nil {
-		wsWaitErr = fmt.Errorf("failed to subscribe for new blocks/headers: %w", err)
+		wsWaitErr = fmt.Errorf("failed to subscribe for new headers: %w", err)
 	} else {
 		waitersActive++
 		go func() {
@@ -348,17 +340,6 @@
 			if !ok {
 				// We're toast, retry with non-ws client.
 				hRcvr = nil
-				bRcvr = nil
-				aerRcvr = nil
-				wsWaitErr = ErrMissedEvent
-				break
-			}
-			waitErr = ErrTxNotAccepted
-		case _, ok := <-bRcvr:
-			if !ok {
-				// We're toast, retry with non-ws client.
-				hRcvr = nil
-				bRcvr = nil
 				aerRcvr = nil
 				wsWaitErr = ErrMissedEvent
 				break
@@ -368,7 +349,6 @@
 			if !ok {
 				// We're toast, retry with non-ws client.
 				hRcvr = nil
-				bRcvr = nil
 				aerRcvr = nil
 				wsWaitErr = ErrMissedEvent
 				break
@@ -390,19 +370,11 @@
 			case _, ok := <-hRcvr:
 				if !ok { // Missed event means both channels are closed.
 					hRcvr = nil
-					bRcvr = nil
-					aerRcvr = nil
-				}
-			case _, ok := <-bRcvr:
-				if !ok { // Missed event means both channels are closed.
-					hRcvr = nil
-					bRcvr = nil
 					aerRcvr = nil
 				}
 			case _, ok := <-aerRcvr:
 				if !ok { // Missed event means both channels are closed.
 					hRcvr = nil
-					bRcvr = nil
 					aerRcvr = nil
 				}
 			case unsubErr := <-unsubErrs:
@@ -426,9 +398,6 @@
 	if hRcvr != nil {
 		close(hRcvr)
 	}
-	if bRcvr != nil {
-		close(bRcvr)
-	}
 	if aerRcvr != nil {
 		close(aerRcvr)
 	}