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35 lines
1.5 KiB
Go
35 lines
1.5 KiB
Go
package storage
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import "github.com/coreos/etcd/storage/storagepb"
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type KV interface {
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// Range gets the keys in the range at rangeIndex.
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// If rangeIndex <=0, range gets the keys at currentIndex.
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// If `end` is nil, the request returns the key.
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// If `end` is not nil, it gets the keys in range [key, range_end).
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// Limit limits the number of keys returned.
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Range(key, end []byte, limit, rangeIndex int64) (kvs []storagepb.KeyValue, index int64)
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// Put puts the given key,value into the store.
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// A put also increases the index of the store, and generates one event in the event history.
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Put(key, value []byte) (index int64)
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// DeleteRange deletes the given range from the store.
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// A deleteRange increases the index of the store if any key in the range exists.
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// The number of key deleted will be returned.
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// It also generates one event for each key delete in the event history.
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// if the `end` is nil, deleteRange deletes the key.
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// if the `end` is not nil, deleteRange deletes the keys in range [key, range_end).
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DeleteRange(key, end []byte) (n, index int64)
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// TnxBegin begins a tnx. Only Tnx prefixed operation can be executed, others will be blocked
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// until tnx ends. Only one on-going tnx is allowed.
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TnxBegin()
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// TnxEnd ends the on-going tnx.
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// TODO: generate and verify tnx id for safty.
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TnxEnd()
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TnxRange(key, end []byte, limit, rangeIndex int64) (kvs []storagepb.KeyValue, index int64)
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TnxPut(key, value []byte) (index int64)
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TnxDeleteRange(key, end []byte) (n, index int64)
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}
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