fix!: replace CanLaunch with InitializeConsumer

x/ccv/provider/keeper/consumer_lifecycle.go

@@ -36,13 +36,12 @@ func (k Keeper) PrepareConsumerForLaunch(ctx sdk.Context, consumerId string, pre
 	return k.AppendConsumerToBeLaunched(ctx, consumerId, spawnTime)
 }
 
-// CanLaunch checks on whether the consumer with `consumerId` has set all the initialization parameters set and hence
-// is ready to launch and at what spawn time
-// TODO (PERMISSIONLESS): could remove, all fields should be there because we validate the initialization parameters
-func (k Keeper) CanLaunch(ctx sdk.Context, consumerId string) (time.Time, bool) {
-	// a chain that is already launched or stopped cannot launch again
+// InitializeConsumer tries to move a consumer with `consumerId` to the initialized phase.
+// If successfull, it returns the spawn time and true.
+func (k Keeper) InitializeConsumer(ctx sdk.Context, consumerId string) (time.Time, bool) {
+	// a chain needs to be in the registered or initialized phase
 	phase := k.GetConsumerPhase(ctx, consumerId)
-	if phase == types.CONSUMER_PHASE_LAUNCHED || phase == types.CONSUMER_PHASE_STOPPED {
+	if phase != types.CONSUMER_PHASE_REGISTERED && phase != types.CONSUMER_PHASE_INITIALIZED {
 		return time.Time{}, false
 	}
 
@@ -51,17 +50,14 @@ func (k Keeper) CanLaunch(ctx sdk.Context, consumerId string) (time.Time, bool)
 		return time.Time{}, false
 	}
 
-	spawnTimeIsNotZero := !initializationParameters.SpawnTime.Equal(time.Time{})
-
-	genesisHashSet := initializationParameters.GenesisHash != nil
-	binaryHashSet := initializationParameters.BinaryHash != nil
+	// the spawn time needs to be positive
+	if initializationParameters.SpawnTime.IsZero() {
+		return time.Time{}, false
+	}
 
-	consumerRedistributionFractionSet := initializationParameters.ConsumerRedistributionFraction != ""
-	blocksPerDistributionTransmissionSet := initializationParameters.BlocksPerDistributionTransmission > 0
-	historicalEntriesSet := initializationParameters.HistoricalEntries > 0
+	k.SetConsumerPhase(ctx, consumerId, types.CONSUMER_PHASE_INITIALIZED)
 
-	return initializationParameters.SpawnTime, spawnTimeIsNotZero && genesisHashSet && binaryHashSet && consumerRedistributionFractionSet &&
-		blocksPerDistributionTransmissionSet && historicalEntriesSet
+	return initializationParameters.SpawnTime, true
 }
 
 // BeginBlockLaunchConsumers launches initialized consumers that are ready to launch

x/ccv/provider/keeper/consumer_lifecycle_test.go

@@ -52,45 +52,85 @@ func TestPrepareConsumerForLaunch(t *testing.T) {
 	require.Equal(t, providertypes.ConsumerIds{Ids: []string{"consumerId"}}, consumers)
 }
 
-func TestCanLaunch(t *testing.T) {
-	providerKeeper, ctx, ctrl, _ := testkeeper.GetProviderKeeperAndCtx(t, testkeeper.NewInMemKeeperParams(t))
-	defer ctrl.Finish()
-
-	// cannot launch an unknown chain
-	_, canLaunch := providerKeeper.CanLaunch(ctx, "consumerId")
-	require.False(t, canLaunch)
-
-	// cannot launch a chain without initialization parameters
-	providerKeeper.SetConsumerPhase(ctx, "consumerId", providertypes.CONSUMER_PHASE_INITIALIZED)
-	_, canLaunch = providerKeeper.CanLaunch(ctx, "consumerId")
-	require.False(t, canLaunch)
-
-	// set valid initialization parameters
-	initializationParameters := testkeeper.GetTestInitializationParameters()
-	err := providerKeeper.SetConsumerInitializationParameters(ctx, "consumerId", initializationParameters)
-	require.NoError(t, err)
-
-	// cannot launch a launched chain
-	providerKeeper.SetConsumerPhase(ctx, "consumerId", providertypes.CONSUMER_PHASE_LAUNCHED)
-	_, canLaunch = providerKeeper.CanLaunch(ctx, "consumerId")
-	require.False(t, canLaunch)
+func TestInitializeConsumer(t *testing.T) {
+	now := time.Now().UTC()
+	consumerId := "13"
+
+	testCases := []struct {
+		name           string
+		spawnTime      time.Time
+		setup          func(*providerkeeper.Keeper, sdk.Context, time.Time)
+		expInitialized bool
+	}{
+		{
+			name:      "valid",
+			spawnTime: now,
+			setup: func(pk *providerkeeper.Keeper, ctx sdk.Context, spawnTime time.Time) {
+				pk.SetConsumerPhase(ctx, consumerId, providertypes.CONSUMER_PHASE_REGISTERED)
+				err := pk.SetConsumerInitializationParameters(ctx, consumerId,
+					providertypes.ConsumerInitializationParameters{
+						SpawnTime: spawnTime,
+					})
+				require.NoError(t, err)
+			},
+			expInitialized: true,
+		},
+		{
+			name:      "invalid: no phase",
+			spawnTime: now,
+			setup: func(pk *providerkeeper.Keeper, ctx sdk.Context, spawnTime time.Time) {
+			},
+			expInitialized: false,
+		},
+		{
+			name:      "invalid: wrong phase",
+			spawnTime: now,
+			setup: func(pk *providerkeeper.Keeper, ctx sdk.Context, spawnTime time.Time) {
+				pk.SetConsumerPhase(ctx, consumerId, providertypes.CONSUMER_PHASE_LAUNCHED)
+				err := pk.SetConsumerInitializationParameters(ctx, consumerId,
+					providertypes.ConsumerInitializationParameters{
+						SpawnTime: spawnTime,
+					})
+				require.NoError(t, err)
+			},
+			expInitialized: false,
+		},
+		{
+			name:      "invalid: no init params",
+			spawnTime: now,
+			setup: func(pk *providerkeeper.Keeper, ctx sdk.Context, spawnTime time.Time) {
+				pk.SetConsumerPhase(ctx, consumerId, providertypes.CONSUMER_PHASE_REGISTERED)
+			},
+			expInitialized: false,
+		},
+		{
+			name:      "invalid: zero spawn time",
+			spawnTime: now,
+			setup: func(pk *providerkeeper.Keeper, ctx sdk.Context, spawnTime time.Time) {
+				pk.SetConsumerPhase(ctx, consumerId, providertypes.CONSUMER_PHASE_REGISTERED)
+				err := pk.SetConsumerInitializationParameters(ctx, consumerId,
+					providertypes.ConsumerInitializationParameters{
+						SpawnTime: time.Time{},
+					})
+				require.NoError(t, err)
+			},
+			expInitialized: false,
+		},
+	}
 
-	// cannot launch a stopped chain
-	providerKeeper.SetConsumerPhase(ctx, "consumerId", providertypes.CONSUMER_PHASE_STOPPED)
-	_, canLaunch = providerKeeper.CanLaunch(ctx, "consumerId")
-	require.False(t, canLaunch)
+	for _, tc := range testCases {
+		pk, ctx, ctrl, _ := testkeeper.GetProviderKeeperAndCtx(t, testkeeper.NewInMemKeeperParams(t))
+		defer ctrl.Finish()
 
-	// initialized chain can launch
-	providerKeeper.SetConsumerPhase(ctx, "consumerId", providertypes.CONSUMER_PHASE_INITIALIZED)
-	_, canLaunch = providerKeeper.CanLaunch(ctx, "consumerId")
-	require.True(t, canLaunch)
+		tc.setup(&pk, ctx, tc.spawnTime)
 
-	// chain cannot launch without a genesis hash
-	initializationParameters.GenesisHash = nil
-	err = providerKeeper.SetConsumerInitializationParameters(ctx, "consumerId", initializationParameters)
-	_, canLaunch = providerKeeper.CanLaunch(ctx, "consumerId")
-	require.NoError(t, err)
-	require.False(t, canLaunch)
+		spawnTime, initialized := pk.InitializeConsumer(ctx, consumerId)
+		require.Equal(t, tc.expInitialized, initialized, tc.name)
+		if initialized {
+			require.Equal(t, tc.spawnTime, spawnTime, tc.name)
+			require.Equal(t, providertypes.CONSUMER_PHASE_INITIALIZED, pk.GetConsumerPhase(ctx, consumerId))
+		}
+	}
 }
 
 // TestBeginBlockInit directly tests BeginBlockLaunchConsumers against the spec using helpers defined above.

x/ccv/provider/keeper/msg_server.go

@@ -405,10 +405,9 @@ func (k msgServer) CreateConsumer(goCtx context.Context, msg *types.MsgCreateCon
 			"cannot set power shaping parameters")
 	}
 
-	if spawnTime, canLaunch := k.Keeper.CanLaunch(ctx, consumerId); canLaunch {
-		k.Keeper.SetConsumerPhase(ctx, consumerId, types.CONSUMER_PHASE_INITIALIZED)
+	if spawnTime, initialized := k.Keeper.InitializeConsumer(ctx, consumerId); initialized {
 		if err := k.Keeper.PrepareConsumerForLaunch(ctx, consumerId, time.Time{}, spawnTime); err != nil {
-			return &resp, errorsmod.Wrapf(types.ErrCannotPrepareForLaunch,
+			return &resp, errorsmod.Wrapf(ccvtypes.ErrInvalidConsumerState,
 				"cannot prepare chain with consumer id (%s) for launch", consumerId)
 		}
 	}
@@ -562,10 +561,9 @@ func (k msgServer) UpdateConsumer(goCtx context.Context, msg *types.MsgUpdateCon
 			"a move to a new owner address that is not the gov module can only be done if `Top N` is set to 0")
 	}
 
-	if spawnTime, canLaunch := k.Keeper.CanLaunch(ctx, consumerId); canLaunch {
-		k.Keeper.SetConsumerPhase(ctx, consumerId, types.CONSUMER_PHASE_INITIALIZED)
+	if spawnTime, initialized := k.Keeper.InitializeConsumer(ctx, consumerId); initialized {
 		if err := k.Keeper.PrepareConsumerForLaunch(ctx, consumerId, previousSpawnTime, spawnTime); err != nil {
-			return &resp, errorsmod.Wrapf(types.ErrCannotPrepareForLaunch,
+			return &resp, errorsmod.Wrapf(ccvtypes.ErrInvalidConsumerState,
 				"cannot prepare chain with consumer id (%s) for launch", consumerId)
 		}
 	}

x/ccv/provider/types/errors.go

@@ -35,7 +35,6 @@ var (
 	ErrInvalidTransformToTopN                  = errorsmod.Register(ModuleName, 39, "invalid transform to Top N chain")
 	ErrInvalidTransformToOptIn                 = errorsmod.Register(ModuleName, 40, "invalid transform to Opt In chain")
 	ErrCannotCreateTopNChain                   = errorsmod.Register(ModuleName, 41, "cannot create Top N chain outside permissionlessly")
-	ErrCannotPrepareForLaunch                  = errorsmod.Register(ModuleName, 42, "cannot prepare chain for launch")
 	ErrInvalidRemovalTime                      = errorsmod.Register(ModuleName, 43, "invalid removal time")
 	ErrInvalidMsgCreateConsumer                = errorsmod.Register(ModuleName, 44, "invalid create consumer message")
 	ErrInvalidMsgUpdateConsumer                = errorsmod.Register(ModuleName, 45, "invalid update consumer message")

x/ccv/provider/types/msg.go

@@ -533,10 +533,6 @@ func ValidateInitializationParameters(initializationParameters ConsumerInitializ
 		return errorsmod.Wrapf(ErrInvalidConsumerInitializationParameters, "BinaryHash: %s", err.Error())
 	}
 
-	if initializationParameters.SpawnTime.IsZero() {
-		return errorsmod.Wrap(ErrInvalidConsumerInitializationParameters, "SpawnTime cannot be zero")
-	}
-
 	if err := ccvtypes.ValidateStringFraction(initializationParameters.ConsumerRedistributionFraction); err != nil {
 		return errorsmod.Wrapf(ErrInvalidConsumerInitializationParameters, "ConsumerRedistributionFraction: %s", err.Error())
 	}

x/ccv/provider/types/msg_test.go

@@ -159,7 +159,7 @@ func TestValidateInitializationParameters(t *testing.T) {
 				HistoricalEntries:                 10000,
 				DistributionTransmissionChannel:   "",
 			},
-			valid: false,
+			valid: true,
 		},
 		{
 			name: "invalid - zero duration",