github.com/pokt-network/tendermint@v0.32.11-0.20230426215212-59310158d3e9/lite2/store/store.go (about)

     1  package store
     2  
     3  import "github.com/tendermint/tendermint/types"
     4  
     5  // Store is anything that can persistenly store headers.
     6  type Store interface {
     7  	// SaveSignedHeaderAndValidatorSet saves a SignedHeader (h: sh.Height) and a
     8  	// ValidatorSet (h: sh.Height).
     9  	//
    10  	// height must be > 0.
    11  	SaveSignedHeaderAndValidatorSet(sh *types.SignedHeader, valSet *types.ValidatorSet) error
    12  
    13  	// DeleteSignedHeaderAndValidatorSet deletes SignedHeader (h: height) and
    14  	// ValidatorSet (h: height).
    15  	//
    16  	// height must be > 0.
    17  	DeleteSignedHeaderAndValidatorSet(height int64) error
    18  
    19  	// SignedHeader returns the SignedHeader that corresponds to the given
    20  	// height.
    21  	//
    22  	// height must be > 0.
    23  	//
    24  	// If SignedHeader is not found, ErrSignedHeaderNotFound is returned.
    25  	SignedHeader(height int64) (*types.SignedHeader, error)
    26  
    27  	// ValidatorSet returns the ValidatorSet that corresponds to height.
    28  	//
    29  	// height must be > 0.
    30  	//
    31  	// If ValidatorSet is not found, ErrValidatorSetNotFound is returned.
    32  	ValidatorSet(height int64) (*types.ValidatorSet, error)
    33  
    34  	// LastSignedHeaderHeight returns the last (newest) SignedHeader height.
    35  	//
    36  	// If the store is empty, -1 and nil error are returned.
    37  	LastSignedHeaderHeight() (int64, error)
    38  
    39  	// FirstSignedHeaderHeight returns the first (oldest) SignedHeader height.
    40  	//
    41  	// If the store is empty, -1 and nil error are returned.
    42  	FirstSignedHeaderHeight() (int64, error)
    43  
    44  	// SignedHeaderBefore returns the SignedHeader before a certain height.
    45  	//
    46  	// height must be > 0 && <= LastSignedHeaderHeight.
    47  	SignedHeaderBefore(height int64) (*types.SignedHeader, error)
    48  
    49  	// Prune removes headers & the associated validator sets when Store reaches a
    50  	// defined size (number of header & validator set pairs).
    51  	Prune(size uint16) error
    52  
    53  	// Size returns a number of currently existing header & validator set pairs.
    54  	Size() uint16
    55  }