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37 lines
778 B
Go
37 lines
778 B
Go
package string
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import "github.com/nalgeon/redka/internal/redis"
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// Set the string value of a key only when the key doesn't exist.
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// SETNX key value
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// https://redis.io/commands/setnx
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type SetNX struct {
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redis.BaseCmd
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key string
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value []byte
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}
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func ParseSetNX(b redis.BaseCmd) (SetNX, error) {
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cmd := SetNX{BaseCmd: b}
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if len(cmd.Args()) != 2 {
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return SetNX{}, redis.ErrInvalidArgNum
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}
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cmd.key = string(cmd.Args()[0])
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cmd.value = cmd.Args()[1]
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return cmd, nil
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}
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func (cmd SetNX) Run(w redis.Writer, red redis.Redka) (any, error) {
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out, err := red.Str().SetWith(cmd.key, cmd.value).IfNotExists().Run()
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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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if out.Created {
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w.WriteInt(1)
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} else {
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w.WriteInt(0)
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}
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return out.Created, nil
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}
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