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package lite
import (
"github.com/tendermint/tendermint/types"
log "github.com/tendermint/tendermint/libs/log"
)
// Provider provides information for the lite client to sync validators.
// Examples: MemProvider, files.Provider, client.Provider, CacheProvider.
type Provider interface {
// LatestFullCommit returns the latest commit with minHeight <= height <=
// maxHeight.
// If maxHeight is zero, returns the latest where minHeight <= height.
LatestFullCommit(chainID string, minHeight, maxHeight int64) (FullCommit, error)
// Get the valset that corresponds to chainID and height and return.
// Height must be >= 1.
ValidatorSet(chainID string, height int64) (*types.ValidatorSet, error)
// Set a logger.
SetLogger(logger log.Logger)
}
// A provider that can also persist new information.
// Examples: MemProvider, files.Provider, CacheProvider.
type PersistentProvider interface {
Provider
// SaveFullCommit saves a FullCommit (without verification).
SaveFullCommit(fc FullCommit) error
}