Backend/src/main/java/cc/fascinated/config/RedisConfig.java

package cc.fascinated.config;

import lombok.NonNull;
import lombok.extern.log4j.Log4j2;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisStandaloneConfiguration;
import org.springframework.data.redis.connection.jedis.JedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;

/**
 * @author Braydon
 */
@Configuration
@Log4j2(topic = "Redis")
public class RedisConfig {
    /**
     * The Redis server host.
     */
    @Value("${spring.data.redis.host}")
    private String host;

    /**
     * The Redis server port.
     */
    @Value("${spring.data.redis.port}")
    private int port;

    /**
     * The Redis database index.
     */
    @Value("${spring.data.redis.database}")
    private int database;

    /**
     * The optional Redis password.
     */
    @Value("${spring.data.redis.auth}")
    private String auth;

    /**
     * Build the config to use for Redis.
     *
     * @return the config
     * @see RedisTemplate for config
     */
    @Bean @NonNull
    public RedisTemplate<String, Object> redisTemplate() {
        RedisTemplate<String, Object> template = new RedisTemplate<>();
        template.setConnectionFactory(jedisConnectionFactory());
        return template;
    }

    /**
     * Build the connection factory to use
     * when making connections to Redis.
     *
     * @return the built factory
     * @see JedisConnectionFactory for factory
     */
    @Bean @NonNull
    public JedisConnectionFactory jedisConnectionFactory() {
        log.info("Connecting to Redis at {}:{}/{}", host, port, database);
        RedisStandaloneConfiguration config = new RedisStandaloneConfiguration(host, port);
        config.setDatabase(database);
        if (!auth.trim().isEmpty()) { // Auth with our provided password
            log.info("Using auth...");
            config.setPassword(auth);
        }
        return new JedisConnectionFactory(config);
    }
}