fix: do not allow the update of initialization parameters of launched chains and stop a chain from launching if

x/ccv/provider/keeper/consumer_lifecycle.go

@@ -25,7 +25,7 @@ import (
 // PrepareConsumerForLaunch prepares to move the launch of a consumer chain from the previous spawn time to spawn time.
 // Previous spawn time can correspond to its zero value if the validator was not previously set for launch.
 func (k Keeper) PrepareConsumerForLaunch(ctx sdk.Context, consumerId string, previousSpawnTime, spawnTime time.Time) error {
-	if !previousSpawnTime.Equal(time.Time{}) {
+	if !previousSpawnTime.IsZero() {
 		// if this is not the first initialization and hence `previousSpawnTime` does not contain the zero value of `Time`
 		// remove the consumer id from the previous spawn time
 		err := k.RemoveConsumerToBeLaunched(ctx, consumerId, previousSpawnTime)

x/ccv/provider/keeper/msg_server.go

@@ -494,7 +494,7 @@ func (k msgServer) UpdateConsumer(goCtx context.Context, msg *types.MsgUpdateCon
 		eventAttributes = append(eventAttributes, sdk.NewAttribute(types.AttributeConsumerName, msg.Metadata.Name))
 	}
 
-	// get the previous spawn time so that we can use it in `PrepareConsumerForLaunch`
+	// get the previous spawn time so that we can remove its previously planned spawn time if a new spawn time is provided
 	previousInitializationParameters, err := k.Keeper.GetConsumerInitializationParameters(ctx, consumerId)
 	if err != nil {
 		return &resp, errorsmod.Wrapf(ccvtypes.ErrInvalidConsumerState,
@@ -503,6 +503,31 @@ func (k msgServer) UpdateConsumer(goCtx context.Context, msg *types.MsgUpdateCon
 	previousSpawnTime := previousInitializationParameters.SpawnTime
 
 	if msg.InitializationParameters != nil {
+		phase := k.GetConsumerPhase(ctx, consumerId)
+
+		if phase == types.CONSUMER_PHASE_LAUNCHED {
+			return &resp, errorsmod.Wrap(types.ErrInvalidMsgUpdateConsumer,
+				"cannot update the initialization parameters of an an already launched chain; "+
+					"do not provide any initialization parameters when updating a launched chain")
+		}
+
+		if msg.InitializationParameters.SpawnTime.IsZero() {
+			if phase == types.CONSUMER_PHASE_INITIALIZED {
+				// chain was previously ready to launch at `previousSpawnTime` so we remove the
+				// consumer from getting launched and move it back to the Registered phase
+				err = k.RemoveConsumerToBeLaunched(ctx, consumerId, previousSpawnTime)
+				if err != nil {
+					return &resp, errorsmod.Wrapf(types.ErrInvalidMsgUpdateConsumer,
+						"cannot remove the consumer from being launched: %s", err.Error())
+				}
+				k.SetConsumerPhase(ctx, consumerId, types.CONSUMER_PHASE_REGISTERED)
+			}
+		} else {
+			// add SpawnTime event attribute
+			eventAttributes = append(eventAttributes,
+				sdk.NewAttribute(types.AttributeConsumerSpawnTime, msg.InitializationParameters.SpawnTime.String()))
+		}
+
 		if err = k.Keeper.SetConsumerInitializationParameters(ctx, msg.ConsumerId, *msg.InitializationParameters); err != nil {
 			return &resp, errorsmod.Wrapf(types.ErrInvalidConsumerInitializationParameters,
 				"cannot set consumer initialization parameters: %s", err.Error())

x/ccv/provider/keeper/msg_server_test.go

@@ -1,6 +1,7 @@
 package keeper_test
 
 import (
+	"github.com/cosmos/ibc-go/v8/modules/core/02-client/types"
 	"testing"
 	"time"
 
@@ -176,4 +177,84 @@ func TestUpdateConsumer(t *testing.T) {
 	require.Equal(t, providertypes.ConsumerIds{
 		Ids: []string{consumerId},
 	}, consumerIds)
+
+	// assert that we CANNOT update the initialization parameters of a launched chain
+	providerKeeper.SetConsumerPhase(ctx, consumerId, providertypes.CONSUMER_PHASE_LAUNCHED)
+	_, err = msgServer.UpdateConsumer(ctx,
+		&providertypes.MsgUpdateConsumer{
+			Owner: expectedOwnerAddress, ConsumerId: consumerId,
+			Metadata:                 nil,
+			InitializationParameters: &expectedInitializationParameters,
+			PowerShapingParameters:   nil,
+		})
+	require.ErrorContains(t, err, "cannot update the initialization parameters of an an already launched chain")
+
+	// assert that we can update the consumer metadata of a launched chain
+	providerKeeper.SetConsumerPhase(ctx, consumerId, providertypes.CONSUMER_PHASE_LAUNCHED)
+	expectedConsumerMetadata.Name = "name of a launched chain"
+	_, err = msgServer.UpdateConsumer(ctx,
+		&providertypes.MsgUpdateConsumer{
+			Owner: expectedOwnerAddress, ConsumerId: consumerId,
+			Metadata:                 &expectedConsumerMetadata,
+			InitializationParameters: nil,
+			PowerShapingParameters:   nil,
+		})
+	require.NoError(t, err)
+	actualConsumerMetadata, err = providerKeeper.GetConsumerMetadata(ctx, consumerId)
+	require.NoError(t, err)
+	require.Equal(t, expectedConsumerMetadata, actualConsumerMetadata)
+
+	// assert that we can update the power-shaping parameters of a launched chain
+	providerKeeper.SetConsumerPhase(ctx, consumerId, providertypes.CONSUMER_PHASE_LAUNCHED)
+	expectedPowerShapingParameters.ValidatorSetCap = 123
+	_, err = msgServer.UpdateConsumer(ctx,
+		&providertypes.MsgUpdateConsumer{
+			Owner: expectedOwnerAddress, ConsumerId: consumerId,
+			Metadata:                 nil,
+			InitializationParameters: nil,
+			PowerShapingParameters:   &expectedPowerShapingParameters,
+		})
+	require.NoError(t, err)
+	actualPowerShapingParameters, err = providerKeeper.GetConsumerPowerShapingParameters(ctx, consumerId)
+	require.NoError(t, err)
+	require.Equal(t, expectedPowerShapingParameters, actualPowerShapingParameters)
+
+	// assert that if we call `MsgUpdateConsumer` with a spawn time of zero on an initialized chain, the chain
+	// will not be scheduled to launch and will move back to its Registered phase
+	providerKeeper.SetConsumerPhase(ctx, consumerId, providertypes.CONSUMER_PHASE_INITIALIZED)
+	// first assert that the chain is scheduled to launch
+	previousSpawnTime = expectedInitializationParameters.SpawnTime
+	consumerIds, err = providerKeeper.GetConsumersToBeLaunched(ctx, previousSpawnTime)
+	require.NoError(t, err)
+	require.Equal(t, providertypes.ConsumerIds{
+		Ids: []string{consumerId},
+	}, consumerIds)
+
+	// then, update with a spawn time of zero to prevent the chain from launching
+	expectedInitializationParameters.SpawnTime = time.Time{}
+	// also update an arbitrary field of the initialization parameters
+	// to verify that the parameters of the chain get updated
+	expectedInitializationParameters.InitialHeight = types.NewHeight(1, 123456)
+	_, err = msgServer.UpdateConsumer(ctx,
+		&providertypes.MsgUpdateConsumer{
+			Owner: expectedOwnerAddress, ConsumerId: consumerId,
+			Metadata:                 nil,
+			InitializationParameters: &expectedInitializationParameters,
+			PowerShapingParameters:   nil,
+		})
+	// assert the chain is not scheduled to launch
+	consumerIds, err = providerKeeper.GetConsumersToBeLaunched(ctx, previousSpawnTime)
+	require.NoError(t, err)
+	require.Empty(t, consumerIds)
+	// also assert that no chain is scheduled to launch at zero time
+	consumerIds, err = providerKeeper.GetConsumersToBeLaunched(ctx, time.Time{})
+	require.NoError(t, err)
+	require.Empty(t, consumerIds)
+	// assert that the chain has moved to the registered phase because it is not ready to launch
+	phase = providerKeeper.GetConsumerPhase(ctx, consumerId)
+	require.Equal(t, providertypes.CONSUMER_PHASE_REGISTERED, phase)
+	// assert that the initialization parameters of the chain were nevertheless updated
+	actualInitializationParameters, err = providerKeeper.GetConsumerInitializationParameters(ctx, consumerId)
+	require.NoError(t, err)
+	require.Equal(t, expectedInitializationParameters, actualInitializationParameters)
 }