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Delay allocating Strings for message channel and body

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This commit is contained in:
Thomas Heigl
2020-09-26 16:43:59 +02:00
committed by Eleftheria Stein-Kousathana
parent 55502f336d
commit 5f5168814d
1 changed files with 26 additions and 10 deletions
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36
spring-session-data-redis/src/main/java/org/springframework/session/data/redis/RedisIndexedSessionRepository.java
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@@ -18,6 +18,7 @@ package org.springframework.session.data.redis;
import java.time.Duration;
import java.time.Instant;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
@@ -36,6 +37,7 @@ import org.springframework.data.redis.core.BoundHashOperations;
import org.springframework.data.redis.core.RedisOperations;
import org.springframework.data.redis.serializer.JdkSerializationRedisSerializer;
import org.springframework.data.redis.serializer.RedisSerializer;
import org.springframework.data.redis.util.ByteUtils;
import org.springframework.session.DelegatingIndexResolver;
import org.springframework.session.FindByIndexNameSessionRepository;
import org.springframework.session.FlushMode;
@@ -272,10 +274,20 @@ public class RedisIndexedSessionRepository
private String sessionCreatedChannelPrefix;
private byte[] sessionCreatedChannelPrefixBytes;
private String sessionDeletedChannel;
private byte[] sessionDeletedChannelBytes;
private String sessionExpiredChannel;
private byte[] sessionExpiredChannelBytes;
private String expiredKeyPrefix;
private byte[] expiredKeyPrefixBytes;
private final RedisOperations<Object, Object> sessionRedisOperations;
private final RedisSessionExpirationPolicy expirationPolicy;
@@ -381,8 +393,13 @@ public class RedisIndexedSessionRepository
private void configureSessionChannels() {
this.sessionCreatedChannelPrefix = this.namespace + "event:" + this.database + ":created:";
this.sessionCreatedChannelPrefixBytes = this.sessionCreatedChannelPrefix.getBytes();
this.sessionDeletedChannel = "__keyevent@" + this.database + "__:del";
this.sessionDeletedChannelBytes = this.sessionDeletedChannel.getBytes();
this.sessionExpiredChannel = "__keyevent@" + this.database + "__:expired";
this.sessionExpiredChannelBytes = this.sessionExpiredChannel.getBytes();
this.expiredKeyPrefix = this.namespace + "sessions:expires:";
this.expiredKeyPrefixBytes = this.expiredKeyPrefix.getBytes();
}
/**
@@ -501,25 +518,24 @@ public class RedisIndexedSessionRepository
@Override
public void onMessage(Message message, byte[] pattern) {
byte[] messageChannel = message.getChannel();
byte[] messageBody = message.getBody();
String channel = new String(messageChannel);
if (channel.startsWith(this.sessionCreatedChannelPrefix)) {
if (ByteUtils.startsWith(messageChannel, this.sessionCreatedChannelPrefixBytes)) {
// TODO: is this thread safe?
@SuppressWarnings("unchecked")
Map<Object, Object> loaded = (Map<Object, Object>) this.defaultSerializer.deserialize(message.getBody());
handleCreated(loaded, channel);
handleCreated(loaded, new String(messageChannel));
return;
}
String body = new String(messageBody);
if (!body.startsWith(getExpiredKeyPrefix())) {
byte[] messageBody = message.getBody();
if (!ByteUtils.startsWith(messageBody, this.expiredKeyPrefixBytes)) {
return;
}
boolean isDeleted = channel.equals(this.sessionDeletedChannel);
if (isDeleted || channel.equals(this.sessionExpiredChannel)) {
boolean isDeleted = Arrays.equals(messageChannel, this.sessionDeletedChannelBytes);
if (isDeleted || Arrays.equals(messageChannel, this.sessionExpiredChannelBytes)) {
String body = new String(messageBody);
int beginIndex = body.lastIndexOf(":") + 1;
int endIndex = body.length();
String sessionId = body.substring(beginIndex, endIndex);
@@ -611,7 +627,7 @@ public class RedisIndexedSessionRepository
}
private String getExpiredKeyPrefix() {
return this.namespace + "sessions:expires:";
return this.expiredKeyPrefix;
}
/**