31 lines
969 B
Go
31 lines
969 B
Go
package node
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import (
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"github.com/lbryio/lbcd/claimtrie/change"
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)
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// Repo defines APIs for Node to access persistence layer.
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type Repo interface {
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// AppendChanges saves changes into the repo.
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// The changes can belong to different nodes, but the chronological
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// order must be preserved for the same node.
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AppendChanges(changes []change.Change) error
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// LoadChanges loads changes of a node up to (includes) the specified height.
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// If no changes found, both returned slice and error will be nil.
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LoadChanges(name []byte) ([]change.Change, error)
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DropChanges(name []byte, finalHeight int32) error
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// Close closes the repo.
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Close() error
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// IterateChildren returns change sets for each of name.+
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// Return false on f to stop the iteration.
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IterateChildren(name []byte, f func(changes []change.Change) bool) error
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// IterateAll iterates keys until the predicate function returns false
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IterateAll(predicate func(name []byte) bool)
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Flush() error
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}
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