How to implement multitenancy for redis in spring boot - spring

Question

I am working on making my whole application multi-tenanted but stuck on redis. So far I created a map of JedisConnectionFactory and tried to pass it to RedisTemplate but it throwing java.lang.IllegalArgumentException: template not initialized; call afterPropertiesSet() before using it.
Below are code snippets:
#Component
public class RedisConfiguration {
#Autowired
private DSConfig dsConfig;
private Map<String,JedisConnectionFactory> jedisConnectionFactoryMap = new HashMap<>();
private static Logger LOGGER = LoggerFactory.getLogger(RedisConfiguration.class);
#PostConstruct
public void initializeJedisConnectionFactories() {
for(DatasourceDetail datasourceDetail : dsConfig.getDatasources()) {
RedisStandaloneConfiguration redisConfig = new RedisStandaloneConfiguration();
redisConfig.setHostName(datasourceDetail.getRedisHost());
redisConfig.setPassword(RedisPassword.of(datasourceDetail.getRedisPassword()));
redisConfig.setPort(Integer.parseInt(datasourceDetail.getRedisPort()));
JedisClientConfiguration configuration = JedisClientConfiguration.builder().usePooling().
poolConfig(new JedisPoolConfig()).build();
jedisConnectionFactoryMap.put(datasourceDetail.getTenantId()
,new JedisConnectionFactory(redisConfig,configuration));
}
LOGGER.info("Connection factory count " + jedisConnectionFactoryMap.size());
}
public RedisTemplate< String, Object > redisTemplate() throws Exception {
final RedisTemplate< String, Object > template = new RedisTemplate< String, Object >();
template.setConnectionFactory( jedisConnectionFactory() );
template.setKeySerializer( new StringRedisSerializer() );
template.setHashValueSerializer( new GenericToStringSerializer< Object >( Object.class ) );
template.setValueSerializer( new GenericToStringSerializer< Object >( Object.class ) );
return template;
}
JedisConnectionFactory jedisConnectionFactory() throws Exception {
if(TenantContext.getCurrentTenant()==null) {
throw new Exception("No tenant context found");
}
LOGGER.info("Returning redis connection for tenant" + TenantContext.getCurrentTenant());
return jedisConnectionFactoryMap.get(TenantContext.getCurrentTenant());
}
}
And I am using redis template as below:
#CrossOrigin("*")
#RestController
#RequestMapping("/redis")
public class RedisController {
#Autowired
private RedisConfiguration redisConfiguration;
#GetMapping("/set")
#ResponseBody
public Object set(#RequestParam(value = "key", required = true) String key,
#RequestParam(value = "value", required = true) String value) throws Exception {
redisConfiguration.redisTemplate().opsForValue().set( key,value );
return true;
}
#GetMapping("/get")
#ResponseBody
public Object get(#RequestParam(value = "key", required = true) String key) throws Exception {
redisConfiguration.redisTemplate().opsForValue().get(key);
return true;
}
}
Is there anyway I can implement this in a better way or is there any other way which spring redis provides?

Answer 1

Finally I was able to resolve by calling afterPropertiesSet() explicitly.