ir: Support P2PNotary and NeoFSAlphabet roles preset in the Sidechain

The roles are required to be set for the validators in almost all NeoFS
environments. Previously, this required dedicated transaction signed by
the committee majority. Starting from release v0.103.0, Neo Go support
protocol extension that allows to designate various roles to the various
accounts on blockchain genesis (zero height). With this feature, Inner
Ring running in local consensus may  be at the configuration level.

Add `set_roles_in_genesis` value to `morph.consensus` section providing
option to Inner Ring to start blockchain with P2PNotary and
NeoFSAlphabet roles designated to the genesis block's validators.

Closes #2643.

Signed-off-by: Leonard Lyubich <leonard@morphbits.io>

config/example/ir.yaml

@@ -77,6 +77,9 @@ morph:
       ping: # Optional settings of pinging mechanism
         interval: 30s # Optional time period between pings. Defaults to 30s. Must not be negative
         timeout: 90s # Optional time period to wait for pong. Defaults to 1m. Must not be negative
+    set_roles_in_genesis: true # Optional flag for designating P2PNotary and NeoFSAlphabet roles to all
+      # genesis block validators. The validators depend on 'committee' and, if set, 'validators_history'.
+      # Must be 'true' or 'false'.
 
 network_settings: # NeoFS network settings managed in the Netmap contract
   epoch_duration: 240 # Time interval (approximate) between two adjacent NeoFS epochs measured in Sidechain blocks.

pkg/innerring/config.go

@@ -209,6 +209,11 @@ func parseBlockchainConfig(v *viper.Viper, _logger *zap.Logger) (c blockchain.Co
 		}
 	}
 
+	c.SetRolesInGenesis, err = parseConfigBool(v, rootSection+".set_roles_in_genesis", "flag to set roles for the committee in the genesis block")
+	if err != nil && !errors.Is(err, errMissingConfig) {
+		return c, err
+	}
+
 	c.Logger = _logger
 
 	return c, nil

pkg/innerring/config_test.go

@@ -66,6 +66,7 @@ const validBlockchainConfigOptions = `
       ping:
         interval: 44s
         timeout: 55s
+    set_roles_in_genesis: true
 `
 
 func _newConfigFromYAML(tb testing.TB, yaml1, yaml2 string) *viper.Viper {
@@ -196,6 +197,7 @@ func TestParseBlockchainConfig(t *testing.T) {
 				2:  2,
 				10: 2,
 			},
+			SetRolesInGenesis: true,
 		}, c)
 	})
 
@@ -275,6 +277,11 @@ func TestParseBlockchainConfig(t *testing.T) {
 			{kvF("p2p.peers.max", math.MaxInt32+1)},
 			{kvF("p2p.peers.attempts", -1)},
 			{kvF("p2p.peers.attempts", math.MaxInt32+1)},
+			{kvF("set_roles_in_genesis", "not a boolean")},
+			{kvF("set_roles_in_genesis", 1)},
+			{kvF("set_roles_in_genesis", "True")},
+			{kvF("set_roles_in_genesis", "False")},
+			{kvF("set_roles_in_genesis", "not a boolean")},
 		} {
 			var reportMsg []string
 

pkg/innerring/internal/blockchain/blockchain.go

@@ -12,6 +12,7 @@ import (
 	"github.com/nspcc-dev/neo-go/pkg/config/netmode"
 	"github.com/nspcc-dev/neo-go/pkg/consensus"
 	"github.com/nspcc-dev/neo-go/pkg/core"
+	"github.com/nspcc-dev/neo-go/pkg/core/native/noderoles"
 	"github.com/nspcc-dev/neo-go/pkg/core/storage"
 	"github.com/nspcc-dev/neo-go/pkg/core/storage/dbconfig"
 	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
@@ -239,6 +240,13 @@ type Config struct {
 	// must not exceed Committee length. Value for zero key (genesis height) is
 	// required.
 	ValidatorsHistory map[uint32]uint32
+
+	// Whether to designate [noderoles.P2PNotary] and [noderoles.NeoFSAlphabet]
+	// roles to the Committee (keep an eye on ValidatorsHistory) for genesis block
+	// in the RoleManagement contract.
+	//
+	// Optional: by default, roles are unset.
+	SetRolesInGenesis bool
 }
 
 // New returns new Blockchain configured by the specified Config. New panics if
@@ -336,13 +344,26 @@ func New(cfg Config) (res *Blockchain, err error) {
 	cfgBaseProto.P2PSigExtensions = true
 	cfgBaseProto.MaxTraceableBlocks = cfg.TraceableChainLength
 	cfgBaseProto.Hardforks = cfg.HardForks
+	var genesisValidatorsCount uint32
 	if cfg.ValidatorsHistory != nil {
 		cfgBaseProto.ValidatorsHistory = make(map[uint32]uint32, len(cfg.ValidatorsHistory))
 		for height, num := range cfg.ValidatorsHistory {
 			cfgBaseProto.ValidatorsHistory[height] = num
 		}
+
+		// value checked above in function
+		genesisValidatorsCount = cfg.ValidatorsHistory[0]
 	} else {
 		cfgBaseProto.ValidatorsCount = uint32(len(standByCommittee))
+		genesisValidatorsCount = cfgBaseProto.ValidatorsCount
+	}
+
+	if cfg.SetRolesInGenesis {
+		cfgBaseProto.Genesis.Roles = map[noderoles.Role]keys.PublicKeys{
+			// Notary service is always enabled, see below
+			noderoles.P2PNotary:     cfg.Committee[:genesisValidatorsCount],
+			noderoles.NeoFSAlphabet: cfg.Committee[:genesisValidatorsCount],
+		}
 	}
 
 	cfgBaseApp := &cfgBase.ApplicationConfiguration