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45 lines
1.4 KiB
45 lines
1.4 KiB
package store
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import "github.com/tendermint/tendermint/types"
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// Store is anything that can persistenly store headers.
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type Store interface {
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// SaveSignedHeaderAndNextValidatorSet saves a SignedHeader (h: sh.Height)
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// and a ValidatorSet (h: sh.Height+1).
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//
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// height must be > 0.
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SaveSignedHeaderAndNextValidatorSet(sh *types.SignedHeader, valSet *types.ValidatorSet) error
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// DeleteSignedHeaderAndNextValidatorSet deletes SignedHeader (h: height) and
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// ValidatorSet (h: height+1).
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//
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// height must be > 0.
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DeleteSignedHeaderAndNextValidatorSet(height int64) error
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// SignedHeader returns the SignedHeader that corresponds to the given
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// height.
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//
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// height must be > 0.
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//
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// If the store is empty and the latest SignedHeader is requested, an error
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// is returned.
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SignedHeader(height int64) (*types.SignedHeader, error)
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// ValidatorSet returns the ValidatorSet that corresponds to height.
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//
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// height must be > 0.
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//
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// If the store is empty and the latest ValidatorSet is requested, an error
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// is returned.
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ValidatorSet(height int64) (*types.ValidatorSet, error)
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// LastSignedHeaderHeight returns the last (newest) SignedHeader height.
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//
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// If the store is empty, -1 and nil error are returned.
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LastSignedHeaderHeight() (int64, error)
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// FirstSignedHeaderHeight returns the first (oldest) SignedHeader height.
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//
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// If the store is empty, -1 and nil error are returned.
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FirstSignedHeaderHeight() (int64, error)
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}
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