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36 lines
718 B
Go
36 lines
718 B
Go
package key
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import (
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"github.com/nalgeon/redka/internal/core"
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"github.com/nalgeon/redka/internal/redis"
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)
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// Returns a random key name from the database.
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// RANDOMKEY
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// https://redis.io/commands/randomkey
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type RandomKey struct {
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redis.BaseCmd
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}
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func ParseRandomKey(b redis.BaseCmd) (*RandomKey, error) {
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cmd := &RandomKey{BaseCmd: b}
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if len(cmd.Args()) != 0 {
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return cmd, redis.ErrInvalidArgNum
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}
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return cmd, nil
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}
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func (cmd *RandomKey) Run(w redis.Writer, red redis.Redka) (any, error) {
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key, err := red.Key().Random()
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if err == core.ErrNotFound {
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w.WriteNull()
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return nil, nil
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}
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if err != nil {
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w.WriteError(cmd.Error(err))
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return nil, err
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}
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w.WriteBulkString(key.Key)
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return key, nil
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}
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