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24 lines
644 B
Go
24 lines
644 B
Go
package godis
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import "strings"
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var cmdTable = make(map[string]*command)
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type command struct {
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executor ExecFunc
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prepare PreFunc // return related keys and rollback command
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arity int // allow number of args, arity < 0 means len(args) >= -arity
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}
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// RegisterCommand registers a new command
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// arity means allowed number of cmdArgs, arity < 0 means len(args) >= -arity.
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// for example: the arity of `get` is 2, `mget` is -2
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func RegisterCommand(name string, executor ExecFunc, prepare PreFunc, arity int) {
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name = strings.ToLower(name)
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cmdTable[name] = &command{
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executor: executor,
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prepare: prepare,
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arity: arity,
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}
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}
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