使用 node-redis 在片场获取 "ERR syntax error"

Question

我无法使用 node-redis 在 redis 中设置和获取密钥。但是 set 和 get 在使用 redis-cli 时效果很好。这是我的代码：

const redis = require('redis');
const util = require('util');

const GLOBAL_KEY = 'lambda-test';
const redisOptions = {
    host: process.env.REDIS_HOST,
    port: process.env.REDIS_PORT
}

try{
    test();
}
catch(err) {
    console.log('catch err ' + err);
}

async function test() {
    var client = redis.createClient(redisOptions);
    client.on("error", function(error) {
        console.error(error);
    });
    client.get = util.promisify(client.get);
    client.set = util.promisify(client.set);
    await client.set("ke", "test1", redis.print).catch(function(err){console.log('err: '+ err);});
    await client.get("ke", redis.print).catch(function(err){console.log('err: '+ err);});
}

输出：

err: ReplyError: ERR syntax error
err: ReplyError: ERR wrong number of arguments for 'get' command

不知道是什么原因，谁能帮我弄清楚我错过了什么？

更新：我尝试使用绑定，但没有成功：

    client.get = util.promisify(client.get).bind(client);
    client.set = util.promisify(client.set).bind(client);

我还启用了 DEBUG 以获取额外的日志：

2021-04-20T07:48:36.279Z Queueing set for next server connection.
2021-04-20T07:48:36.303Z Stream connected XXXXX:6379 id 0
2021-04-20T07:48:36.303Z Checking server ready state...
2021-04-20T07:48:36.304Z Send XXXXXX:6379 id 0: *1

info

2021-04-20T07:48:36.305Z Net read XXXXX:6379 id 0
2021-04-20T07:48:36.306Z Redis server ready.
2021-04-20T07:48:36.306Z on_ready called XXXXX:6379 id 0
2021-04-20T07:48:36.307Z Sending offline command: set
2021-04-20T07:48:36.307Z Send XXXXX:6379 id 0: *4

set

ke

test1
7
function print (err, reply) {
    if (err) {
        // A error always begins with Error:
        console.log(err.toString());
    } else {
        console.log('Reply: ' + reply);
    }
}

2021-04-20T07:48:36.307Z Net read XXXXX:6379 id 0
err: ReplyError: ERR syntax error
2021-04-20T07:48:36.309Z Send XXXXX:6379 id 0: *3

get

ke
7
function print (err, reply) {
    if (err) {
        // A error always begins with Error:
        console.log(err.toString());
    } else {
        console.log('Reply: ' + reply);
    }
}

2021-04-20T07:48:36.310Z Net read XXXXX:6379 id 0
err: ReplyError: ERR wrong number of arguments for 'get' command

Answer 1

感谢大家的建议。我将问题作为问题发布在回购 https://github.com/NodeRedis/node-redis/issues/1599 and got the answer from leibale:

async function test() {
    const client = redis.createClient(redisOptions);
    client.on("error", function(error) {
        console.error(error);
    });
    client.get = util.promisify(client.get).bind(client);
    client.set = util.promisify(client.set).bind(client);

    try {
        console.log('SET reply:', await client.set("ke", "test1"));
    } catch (err) {
        console.error(err);
    }

    try {
        console.log('GET reply:', await client.get("ke"));
    } catch (err) {
        console.error(err);
    } 
}

问题是 bind 并且使用 redis.print 作为回调

使用 node-redis 在片场获取 "ERR syntax error"

Getting "ERR syntax error" on set using node-redis

redis

node.js