72 lines
2.6 KiB
Go
72 lines
2.6 KiB
Go
package store
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import (
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"io"
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corestore "cosmossdk.io/core/store"
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"cosmossdk.io/store/v2/proof"
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)
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// VersionedDatabase defines an API for a versioned database that allows reads,
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// writes, iteration and commitment over a series of versions.
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type VersionedDatabase interface {
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Has(storeKey []byte, version uint64, key []byte) (bool, error)
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Get(storeKey []byte, version uint64, key []byte) ([]byte, error)
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GetLatestVersion() (uint64, error)
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SetLatestVersion(version uint64) error
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Iterator(storeKey []byte, version uint64, start, end []byte) (corestore.Iterator, error)
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ReverseIterator(storeKey []byte, version uint64, start, end []byte) (corestore.Iterator, error)
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ApplyChangeset(version uint64, cs *corestore.Changeset) error
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// Close releases associated resources. It should NOT be idempotent. It must
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// only be called once and any call after may panic.
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io.Closer
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}
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// UpgradableDatabase defines an API for a versioned database that allows pruning
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// deleted storeKeys
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type UpgradableDatabase interface {
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// PruneStoreKeys prunes all data associated with the given storeKeys whenever
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// the given version is pruned.
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PruneStoreKeys(storeKeys []string, version uint64) error
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}
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// Committer defines an API for committing state.
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type Committer interface {
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// WriteChangeset writes the changeset to the commitment state.
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WriteChangeset(cs *corestore.Changeset) error
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// WorkingCommitInfo returns the CommitInfo for the working tree.
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WorkingCommitInfo(version uint64) *proof.CommitInfo
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// GetLatestVersion returns the latest version.
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GetLatestVersion() (uint64, error)
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// LoadVersion loads the tree at the given version.
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LoadVersion(targetVersion uint64) error
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// Commit commits the working tree to the database.
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Commit(version uint64) (*proof.CommitInfo, error)
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// GetProof returns the proof of existence or non-existence for the given key.
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GetProof(storeKey []byte, version uint64, key []byte) ([]proof.CommitmentOp, error)
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// Get returns the value for the given key at the given version.
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//
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// NOTE: This method only exists to support migration from IAVL v0/v1 to v2.
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// Once migration is complete, this method should be removed and/or not used.
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Get(storeKey []byte, version uint64, key []byte) ([]byte, error)
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// SetInitialVersion sets the initial version of the committer.
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SetInitialVersion(version uint64) error
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// GetCommitInfo returns the CommitInfo for the given version.
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GetCommitInfo(version uint64) (*proof.CommitInfo, error)
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// Close releases associated resources. It should NOT be idempotent. It must
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// only be called once and any call after may panic.
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io.Closer
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}
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