ACP-77: Add ConversionID to state

vms/platformvm/client.go

@@ -235,7 +235,8 @@ type GetSubnetClientResponse struct {
 	Locktime    uint64
 	// subnet transformation tx ID for a permissionless subnet
 	SubnetTransformationTxID ids.ID
-	// subnet manager information for a permissionless L1
+	// subnet conversion information for an L1
+	ConversionID   ids.ID
 	ManagerChainID ids.ID
 	ManagerAddress []byte
 }
@@ -259,6 +260,7 @@ func (c *client) GetSubnet(ctx context.Context, subnetID ids.ID, options ...rpc.
 		Threshold:                uint32(res.Threshold),
 		Locktime:                 uint64(res.Locktime),
 		SubnetTransformationTxID: res.SubnetTransformationTxID,
+		ConversionID:             res.ConversionID,
 		ManagerChainID:           res.ManagerChainID,
 		ManagerAddress:           res.ManagerAddress,
 	}, nil

vms/platformvm/config/execution_config.go

@@ -21,7 +21,7 @@ var DefaultExecutionConfig = ExecutionConfig{
 	ChainDBCacheSize:             2048,
 	BlockIDCacheSize:             8192,
 	FxOwnerCacheSize:             4 * units.MiB,
-	SubnetManagerCacheSize:       4 * units.MiB,
+	SubnetConversionCacheSize:    4 * units.MiB,
 	ChecksumsEnabled:             false,
 	MempoolPruneFrequency:        30 * time.Minute,
 }
@@ -37,7 +37,7 @@ type ExecutionConfig struct {
 	ChainDBCacheSize             int            `json:"chain-db-cache-size"`
 	BlockIDCacheSize             int            `json:"block-id-cache-size"`
 	FxOwnerCacheSize             int            `json:"fx-owner-cache-size"`
-	SubnetManagerCacheSize       int            `json:"subnet-manager-cache-size"`
+	SubnetConversionCacheSize    int            `json:"subnet-conversion-cache-size"`
 	ChecksumsEnabled             bool           `json:"checksums-enabled"`
 	MempoolPruneFrequency        time.Duration  `json:"mempool-prune-frequency"`
 }

vms/platformvm/config/execution_config_test.go

@@ -89,7 +89,7 @@ func TestExecutionConfigUnmarshal(t *testing.T) {
 			ChainDBCacheSize:             7,
 			BlockIDCacheSize:             8,
 			FxOwnerCacheSize:             9,
-			SubnetManagerCacheSize:       10,
+			SubnetConversionCacheSize:    10,
 			ChecksumsEnabled:             true,
 			MempoolPruneFrequency:        time.Minute,
 		}

vms/platformvm/service.go

@@ -439,7 +439,8 @@ type GetSubnetResponse struct {
 	Locktime    avajson.Uint64 `json:"locktime"`
 	// subnet transformation tx ID for an elastic subnet
 	SubnetTransformationTxID ids.ID `json:"subnetTransformationTxID"`
-	// subnet manager information for a permissionless L1
+	// subnet conversion information for an L1
+	ConversionID   ids.ID              `json:"conversionID"`
 	ManagerChainID ids.ID              `json:"managerChainID"`
 	ManagerAddress types.JSONByteSlice `json:"managerAddress"`
 }
@@ -490,12 +491,14 @@ func (s *Service) GetSubnet(_ *http.Request, args *GetSubnetArgs, response *GetS
 		return err
 	}
 
-	switch chainID, addr, err := s.vm.state.GetSubnetManager(args.SubnetID); err {
+	switch c, err := s.vm.state.GetSubnetConversion(args.SubnetID); err {
 	case nil:
 		response.IsPermissioned = false
-		response.ManagerChainID = chainID
-		response.ManagerAddress = addr
+		response.ConversionID = c.ConversionID
+		response.ManagerChainID = c.ChainID
+		response.ManagerAddress = c.Addr
 	case database.ErrNotFound:
+		response.ConversionID = ids.Empty
 		response.ManagerChainID = ids.Empty
 		response.ManagerAddress = []byte(nil)
 	default:

vms/platformvm/service.md

@@ -1204,7 +1204,7 @@ Testnet: U8iRqJoiJm8xZHAacmvYyZVwqQx6uDNtQeP3CQ6fcgQk3JqnK
 
 ### `platform.getSubnet`
 
-Get owners and elastic info about the Subnet.
+Get owners and info about the Subnet or L1.
 
 **Signature:**
 
@@ -1217,7 +1217,10 @@ platform.getSubnet({
     controlKeys: []string,
     threshold: string,
     locktime: string,
-    subnetTransformationTxID: string
+    subnetTransformationTxID: string,
+    conversionID: string,
+    managerChainID: string,
+    managerAddress: string
 }
 ```
 
@@ -1226,8 +1229,10 @@ platform.getSubnet({
   a permissioned subnet. If the Subnet is a PoS Subnet, then `threshold` will be `0` and `controlKeys`
   will be empty.
 - changes can not be made into the subnet until `locktime` is in the past.
-- `subnetTransformationTxID` is the ID of the transaction that changed the subnet into a elastic one,
-  for when this change was performed.
+- `subnetTransformationTxID` is the ID of the transaction that changed the subnet into an elastic one, if it exists.
+- `conversionID` is the ID of the conversion from a permissioned Subnet into an L1, if it exists.
+- `managerChainID` is the ChainID that has the ability to modify this L1s validator set, if it exists.
+- `managerAddress` is the address that has the ability to modify this L1s validator set, if it exists.
 
 **Example Call:**
 
@@ -1250,7 +1255,10 @@ curl -X POST --data '{
     "controlKeys": ["P-fuji1ztvstx6naeg6aarfd047fzppdt8v4gsah88e0c","P-fuji193kvt4grqewv6ce2x59wnhydr88xwdgfcedyr3"],
     "threshold": "1",
     "locktime": "0",
-    "subnetTransformationTxID": "11111111111111111111111111111111LpoYY"
+    "subnetTransformationTxID": "11111111111111111111111111111111LpoYY",
+    "conversionID": "11111111111111111111111111111111LpoYY",
+    "managerChainID": "11111111111111111111111111111111LpoYY",
+    "managerAddress": null
   },
   "id": 1
 }

vms/platformvm/state/diff.go

@@ -52,8 +52,8 @@ type diff struct {
 	addedSubnetIDs []ids.ID
 	// Subnet ID --> Owner of the subnet
 	subnetOwners map[ids.ID]fx.Owner
-	// Subnet ID --> Manager of the subnet
-	subnetManagers map[ids.ID]chainIDAndAddr
+	// Subnet ID --> Conversion of the subnet
+	subnetConversions map[ids.ID]SubnetConversion
 	// Subnet ID --> Tx that transforms the subnet
 	transformedSubnets map[ids.ID]*txs.Tx
 
@@ -76,14 +76,14 @@ func NewDiff(
 		return nil, fmt.Errorf("%w: %s", ErrMissingParentState, parentID)
 	}
 	return &diff{
-		parentID:       parentID,
-		stateVersions:  stateVersions,
-		timestamp:      parentState.GetTimestamp(),
-		feeState:       parentState.GetFeeState(),
-		accruedFees:    parentState.GetAccruedFees(),
-		expiryDiff:     newExpiryDiff(),
-		subnetOwners:   make(map[ids.ID]fx.Owner),
-		subnetManagers: make(map[ids.ID]chainIDAndAddr),
+		parentID:          parentID,
+		stateVersions:     stateVersions,
+		timestamp:         parentState.GetTimestamp(),
+		feeState:          parentState.GetFeeState(),
+		accruedFees:       parentState.GetAccruedFees(),
+		expiryDiff:        newExpiryDiff(),
+		subnetOwners:      make(map[ids.ID]fx.Owner),
+		subnetConversions: make(map[ids.ID]SubnetConversion),
 	}, nil
 }
 
@@ -357,24 +357,21 @@ func (d *diff) SetSubnetOwner(subnetID ids.ID, owner fx.Owner) {
 	d.subnetOwners[subnetID] = owner
 }
 
-func (d *diff) GetSubnetManager(subnetID ids.ID) (ids.ID, []byte, error) {
-	if manager, exists := d.subnetManagers[subnetID]; exists {
-		return manager.ChainID, manager.Addr, nil
+func (d *diff) GetSubnetConversion(subnetID ids.ID) (SubnetConversion, error) {
+	if c, ok := d.subnetConversions[subnetID]; ok {
+		return c, nil
 	}
 
-	// If the subnet manager was not assigned in this diff, ask the parent state.
+	// If the subnet conversion was not assigned in this diff, ask the parent state.
 	parentState, ok := d.stateVersions.GetState(d.parentID)
 	if !ok {
-		return ids.Empty, nil, ErrMissingParentState
+		return SubnetConversion{}, ErrMissingParentState
 	}
-	return parentState.GetSubnetManager(subnetID)
+	return parentState.GetSubnetConversion(subnetID)
 }
 
-func (d *diff) SetSubnetManager(subnetID ids.ID, chainID ids.ID, addr []byte) {
-	d.subnetManagers[subnetID] = chainIDAndAddr{
-		ChainID: chainID,
-		Addr:    addr,
-	}
+func (d *diff) SetSubnetConversion(subnetID ids.ID, c SubnetConversion) {
+	d.subnetConversions[subnetID] = c
 }
 
 func (d *diff) GetSubnetTransformation(subnetID ids.ID) (*txs.Tx, error) {
@@ -576,8 +573,8 @@ func (d *diff) Apply(baseState Chain) error {
 	for subnetID, owner := range d.subnetOwners {
 		baseState.SetSubnetOwner(subnetID, owner)
 	}
-	for subnetID, manager := range d.subnetManagers {
-		baseState.SetSubnetManager(subnetID, manager.ChainID, manager.Addr)
+	for subnetID, c := range d.subnetConversions {
+		baseState.SetSubnetConversion(subnetID, c)
 	}
 	return nil
 }

vms/platformvm/state/diff_test.go

@@ -772,46 +772,44 @@ func TestDiffSubnetOwner(t *testing.T) {
 	require.Equal(owner2, owner)
 }
 
-func TestDiffSubnetManager(t *testing.T) {
+func TestDiffSubnetConversion(t *testing.T) {
 	var (
-		require    = require.New(t)
-		state      = newTestState(t, memdb.New())
-		newManager = chainIDAndAddr{ids.GenerateTestID(), []byte{1, 2, 3, 4}}
-		subnetID   = ids.GenerateTestID()
+		require            = require.New(t)
+		state              = newTestState(t, memdb.New())
+		subnetID           = ids.GenerateTestID()
+		expectedConversion = SubnetConversion{
+			ConversionID: ids.GenerateTestID(),
+			ChainID:      ids.GenerateTestID(),
+			Addr:         []byte{1, 2, 3, 4},
+		}
 	)
 
-	chainID, addr, err := state.GetSubnetManager(subnetID)
+	actualConversion, err := state.GetSubnetConversion(subnetID)
 	require.ErrorIs(err, database.ErrNotFound)
-	require.Equal(ids.Empty, chainID)
-	require.Nil(addr)
+	require.Zero(actualConversion)
 
 	d, err := NewDiffOn(state)
 	require.NoError(err)
 
-	chainID, addr, err = d.GetSubnetManager(subnetID)
+	actualConversion, err = d.GetSubnetConversion(subnetID)
 	require.ErrorIs(err, database.ErrNotFound)
-	require.Equal(ids.Empty, chainID)
-	require.Nil(addr)
+	require.Zero(actualConversion)
 
-	// Setting a subnet manager should be reflected on diff not state
-	d.SetSubnetManager(subnetID, newManager.ChainID, newManager.Addr)
-	chainID, addr, err = d.GetSubnetManager(subnetID)
+	// Setting a subnet conversion should be reflected on diff not state
+	d.SetSubnetConversion(subnetID, expectedConversion)
+	actualConversion, err = d.GetSubnetConversion(subnetID)
 	require.NoError(err)
-	require.Equal(newManager.ChainID, chainID)
-	require.Equal(newManager.Addr, addr)
+	require.Equal(expectedConversion, actualConversion)
 
-	chainID, addr, err = state.GetSubnetManager(subnetID)
+	actualConversion, err = state.GetSubnetConversion(subnetID)
 	require.ErrorIs(err, database.ErrNotFound)
-	require.Equal(ids.Empty, chainID)
-	require.Nil(addr)
+	require.Zero(actualConversion)
 
-	// State should reflect new subnet manager after diff is applied
+	// State should reflect new subnet conversion after diff is applied
 	require.NoError(d.Apply(state))
-
-	chainID, addr, err = state.GetSubnetManager(subnetID)
+	actualConversion, err = state.GetSubnetConversion(subnetID)
 	require.NoError(err)
-	require.Equal(newManager.ChainID, chainID)
-	require.Equal(newManager.Addr, addr)
+	require.Equal(expectedConversion, actualConversion)
 }
 
 func TestDiffStacking(t *testing.T) {