script_test.go

// Copyright (c) 2013 The github.com/go-redis/redis Authors.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

package rueidiscompat

import (
	"context"
	"fmt"

	"github.com/redis/rueidis"
)

func ExampleScript() {
	ctx = context.Background()
	IncrByXX := NewScript(`
		if redis.call("GET", KEYS[1]) ~= false then
			return redis.call("INCRBY", KEYS[1], ARGV[1])
		end
		return false
	`)
	client, err := rueidis.NewClient(rueidis.ClientOption{InitAddress: []string{"127.0.0.1:6379"}})
	if err != nil {
		panic(err)
	}
	defer client.Close()
	rdb := NewAdapter(client)
	n, err := IncrByXX.Run(ctx, rdb, []string{"xx_counter"}, 2).Result()
	fmt.Println(n, err)

	err = rdb.Set(ctx, "xx_counter", "40", 0).Err()
	if err != nil {
		panic(err)
	}

	n, err = IncrByXX.Run(ctx, rdb, []string{"xx_counter"}, 2).Result()
	fmt.Println(n, err)
}