net.oschina.j2cache.cache.support.redis.ConfigureNotifyKeyspaceEventsAction Maven / Gradle / Ivy
package net.oschina.j2cache.cache.support.redis;
import java.util.List;
import org.springframework.dao.InvalidDataAccessApiUsageException;
import org.springframework.data.redis.connection.RedisConnection;
/**
* 设置redis键值回调
*/
public class ConfigureNotifyKeyspaceEventsAction {
static final String CONFIG_NOTIFY_KEYSPACE_EVENTS = "notify-keyspace-events";
public void config(RedisConnection connection) {
String notifyOptions = getNotifyOptions(connection);
String customizedNotifyOptions = notifyOptions;
if (!customizedNotifyOptions.contains("E")) {
customizedNotifyOptions += "E";
}
boolean A = customizedNotifyOptions.contains("A");
if (!(A || customizedNotifyOptions.contains("g"))) {
customizedNotifyOptions += "g";
}
if (!(A || customizedNotifyOptions.contains("x"))) {
customizedNotifyOptions += "x";
}
if (!notifyOptions.equals(customizedNotifyOptions)) {
connection.setConfig(CONFIG_NOTIFY_KEYSPACE_EVENTS, customizedNotifyOptions);
}
}
private String getNotifyOptions(RedisConnection connection) {
try {
List config = connection.getConfig(CONFIG_NOTIFY_KEYSPACE_EVENTS);
if (config.size() < 2) {
return "";
}
return config.get(1);
}
catch (InvalidDataAccessApiUsageException e) {
throw new IllegalStateException(
"Unable to configure Redis to keyspace notifications. See http://docs.spring.io/spring-session/docs/current/reference/html5/#api-redisoperationssessionrepository-sessiondestroyedevent",
e);
}
}
}