[#205] netmap: Add well-known EC parameters to network config

Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>

netmap/network_info.go

@@ -62,6 +62,8 @@ func (x *NetworkInfo) readFromV2(m netmap.NetworkInfo, checkFieldPresence bool)
 			configEpochDuration,
 			configIRCandidateFee,
 			configMaxObjSize,
+			configMaxECDataCount,
+			configMaxECParityCount,
 			configWithdrawalFee:
 			_, err = decodeConfigValueUint64(prm.GetValue())
 		case configHomomorphicHashingDisabled,
@@ -234,6 +236,8 @@ func (x *NetworkInfo) IterateRawNetworkParameters(f func(name string, value []by
 			configEpochDuration,
 			configIRCandidateFee,
 			configMaxObjSize,
+			configMaxECDataCount,
+			configMaxECParityCount,
 			configWithdrawalFee,
 			configHomomorphicHashingDisabled,
 			configMaintenanceModeAllowed:
@@ -432,6 +436,34 @@ func (x NetworkInfo) MaxObjectSize() uint64 {
 	return x.configUint64(configMaxObjSize)
 }
 
+const configMaxECDataCount = "MaxECDataCount"
+
+// SetMaxECDataCount sets maximum number of data shards for erasure codes.
+//
+// Zero means no restrictions.
+func (x *NetworkInfo) SetMaxECDataCount(dataCount uint64) {
+	x.setConfigUint64(configMaxECDataCount, dataCount)
+}
+
+// MaxECDataCount returns maximum number of data shards for erasure codes.
+func (x NetworkInfo) MaxECDataCount() uint64 {
+	return x.configUint64(configMaxECDataCount)
+}
+
+const configMaxECParityCount = "MaxECParityCount"
+
+// SetMaxECParityCount sets maximum number of parity shards for erasure codes.
+//
+// Zero means no restrictions.
+func (x *NetworkInfo) SetMaxECParityCount(parityCount uint64) {
+	x.setConfigUint64(configMaxECParityCount, parityCount)
+}
+
+// MaxECParityCount returns maximum number of parity shards for erasure codes.
+func (x NetworkInfo) MaxECParityCount() uint64 {
+	return x.configUint64(configMaxECParityCount)
+}
+
 const configWithdrawalFee = "WithdrawFee"
 
 // SetWithdrawalFee sets fee for withdrawals from the FrostFS accounts that

netmap/network_info_test.go

@@ -173,6 +173,32 @@ func TestNetworkInfo_MaxObjectSize(t *testing.T) {
 	)
 }
 
+func TestNetworkInfo_MaxECDataCount(t *testing.T) {
+	testConfigValue(t,
+		func(x NetworkInfo) any { return x.MaxECDataCount() },
+		func(info *NetworkInfo, val any) { info.SetMaxECDataCount(val.(uint64)) },
+		uint64(1), uint64(2),
+		"MaxECDataCount", func(val any) []byte {
+			data := make([]byte, 8)
+			binary.LittleEndian.PutUint64(data, val.(uint64))
+			return data
+		},
+	)
+}
+
+func TestNetworkInfo_MaxECParityCount(t *testing.T) {
+	testConfigValue(t,
+		func(x NetworkInfo) any { return x.MaxECParityCount() },
+		func(info *NetworkInfo, val any) { info.SetMaxECParityCount(val.(uint64)) },
+		uint64(1), uint64(2),
+		"MaxECParityCount", func(val any) []byte {
+			data := make([]byte, 8)
+			binary.LittleEndian.PutUint64(data, val.(uint64))
+			return data
+		},
+	)
+}
+
 func TestNetworkInfo_WithdrawalFee(t *testing.T) {
 	testConfigValue(t,
 		func(x NetworkInfo) any { return x.WithdrawalFee() },