/
genesis.go
67 lines (55 loc) · 1.89 KB
/
genesis.go
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package types
import (
"fmt"
sdk "github.com/cosmos/cosmos-sdk/types"
sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
)
// NewGenesisState creates a new GenesisState object
func NewGenesisState(spaceSequence uint64,
spaces []Space,
blockHeaders []BlockHeader) *GenesisState {
return &GenesisState{
SpaceSequence: spaceSequence,
Spaces: spaces,
BlockHeaders: blockHeaders,
}
}
// DefaultGenesisState creates a default GenesisState object
func DefaultGenesisState() *GenesisState {
return NewGenesisState(0, []Space{}, []BlockHeader{})
}
// ValidateGenesis validates the provided genesis state to ensure the
// expected invariants holds.
func ValidateGenesis(data GenesisState) error {
if uint64(len(data.Spaces)) != data.SpaceSequence {
return sdkerrors.Wrapf(ErrInvalidSpaceId, "space count mismatch, wanted (%d) but got (%d)", data.SpaceSequence, len(data.Spaces))
}
// validate Spaces
seenSpaceIds := make(map[uint64]bool)
for _, space := range data.Spaces {
if space.Id == 0 {
return sdkerrors.Wrapf(ErrInvalidSpaceId, "space id must not be zero")
}
if _, err := sdk.AccAddressFromBech32(space.Owner); err != nil {
return err
}
if seenSpaceIds[space.Id] {
return sdkerrors.Wrapf(ErrInvalidSpaceId, "duplicate space (%d) during validation", space.Id)
}
seenSpaceIds[space.Id] = true
}
// validate BlockHeader
seenBlockHeaderMap := make(map[string]bool)
for _, header := range data.BlockHeaders {
if !seenSpaceIds[header.SpaceId] {
return sdkerrors.Wrapf(ErrInvalidSpaceId, "unknown space (%d) during validation", header.SpaceId)
}
// space_id/height is unique
seenBlockHeader := fmt.Sprintf("%d-%d", header.SpaceId, header.Height)
if seenBlockHeaderMap[seenBlockHeader] {
return sdkerrors.Wrapf(ErrBlockHeader, "duplicate block header (%s) during validation", seenBlockHeader)
}
seenBlockHeaderMap[seenBlockHeader] = true
}
return nil
}