Add weighted votes migration

x/gov/keeper/migrations.go

@@ -16,5 +16,5 @@ var _ MigrationKeeper = (*Keeper)(nil)
 
 // Migrate1 implements MigrationKeeper.Migrate1 method.
 func (keeper Keeper) Migrate1(ctx sdk.Context) error {
-	return v042.MigrateStore(ctx, keeper.storeKey)
+	return v042.MigrateStore(ctx, keeper.storeKey, keeper.cdc)
 }

x/gov/legacy/v040/content.go

@@ -0,0 +1,58 @@
+// Package v040 is copy-pasted from:
+// https://github.com/cosmos/cosmos-sdk/blob/v0.41.1/x/gov/types/content.go
+package v040
+
+import (
+	"strings"
+
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
+	"github.com/cosmos/cosmos-sdk/x/gov/types"
+)
+
+// Constants pertaining to a Content object
+const (
+	MaxDescriptionLength int = 5000
+	MaxTitleLength       int = 140
+)
+
+// Content defines an interface that a proposal must implement. It contains
+// information such as the title and description along with the type and routing
+// information for the appropriate handler to process the proposal. Content can
+// have additional fields, which will handled by a proposal's Handler.
+// TODO Try to unify this interface with types/module/simulation
+// https://github.com/cosmos/cosmos-sdk/issues/5853
+type Content interface {
+	GetTitle() string
+	GetDescription() string
+	ProposalRoute() string
+	ProposalType() string
+	ValidateBasic() error
+	String() string
+}
+
+// Handler defines a function that handles a proposal after it has passed the
+// governance process.
+type Handler func(ctx sdk.Context, content Content) error
+
+// ValidateAbstract validates a proposal's abstract contents returning an error
+// if invalid.
+func ValidateAbstract(c Content) error {
+	title := c.GetTitle()
+	if len(strings.TrimSpace(title)) == 0 {
+		return sdkerrors.Wrap(types.ErrInvalidProposalContent, "proposal title cannot be blank")
+	}
+	if len(title) > MaxTitleLength {
+		return sdkerrors.Wrapf(types.ErrInvalidProposalContent, "proposal title is longer than max length of %d", MaxTitleLength)
+	}
+
+	description := c.GetDescription()
+	if len(description) == 0 {
+		return sdkerrors.Wrap(types.ErrInvalidProposalContent, "proposal description cannot be blank")
+	}
+	if len(description) > MaxDescriptionLength {
+		return sdkerrors.Wrapf(types.ErrInvalidProposalContent, "proposal description is longer than max length of %d", MaxDescriptionLength)
+	}
+
+	return nil
+}

x/gov/legacy/v040/deposit.go

@@ -0,0 +1,56 @@
+// Package v040 is copy-pasted from:
+// https://github.com/cosmos/cosmos-sdk/blob/v0.41.1/x/gov/types/deposit.go
+package v040
+
+import (
+	"fmt"
+
+	yaml "gopkg.in/yaml.v2"
+
+	sdk "github.com/cosmos/cosmos-sdk/types"
+)
+
+// NewDeposit creates a new Deposit instance
+//nolint:interfacer
+func NewDeposit(proposalID uint64, depositor sdk.AccAddress, amount sdk.Coins) Deposit {
+	return Deposit{proposalID, depositor.String(), amount}
+}
+
+func (d Deposit) String() string {
+	out, _ := yaml.Marshal(d)
+	return string(out)
+}
+
+// Deposits is a collection of Deposit objects
+type Deposits []Deposit
+
+// Equal returns true if two slices (order-dependant) of deposits are equal.
+func (d Deposits) Equal(other Deposits) bool {
+	if len(d) != len(other) {
+		return false
+	}
+
+	for i, deposit := range d {
+		if deposit.String() != other[i].String() {
+			return false
+		}
+	}
+
+	return true
+}
+
+func (d Deposits) String() string {
+	if len(d) == 0 {
+		return "[]"
+	}
+	out := fmt.Sprintf("Deposits for Proposal %d:", d[0].ProposalId)
+	for _, dep := range d {
+		out += fmt.Sprintf("\n  %s: %s", dep.Depositor, dep.Amount)
+	}
+	return out
+}
+
+// Empty returns whether a deposit is empty.
+func (d Deposit) Empty() bool {
+	return d.String() == Deposit{}.String()
+}