package de.juplo.kafka.chat.backend.persistence.inmemory;
import de.juplo.kafka.chat.backend.ChatBackendProperties;
-import de.juplo.kafka.chat.backend.api.KafkaLikeShardingStrategy;
-import de.juplo.kafka.chat.backend.api.ShardingStrategy;
+import de.juplo.kafka.chat.backend.ChatBackendProperties.ShardingStrategyType;
+import de.juplo.kafka.chat.backend.domain.ShardedChatHome;
+import de.juplo.kafka.chat.backend.persistence.KafkaLikeShardingStrategy;
+import de.juplo.kafka.chat.backend.domain.ShardingStrategy;
import de.juplo.kafka.chat.backend.domain.ChatHome;
import de.juplo.kafka.chat.backend.domain.SimpleChatHome;
import de.juplo.kafka.chat.backend.persistence.StorageStrategy;
import org.springframework.context.annotation.Configuration;
import java.time.Clock;
+import java.util.stream.IntStream;
@ConditionalOnProperty(
public class InMemoryServicesConfiguration
{
@Bean
- ChatHome[] chatHomes(
+ @ConditionalOnProperty(
+ prefix = "chat.backend.inmemory",
+ name = "sharding-strategy",
+ havingValue = "none",
+ matchIfMissing = true)
+ ChatHome noneShardingChatHome(InMemoryChatHomeService chatHomeService)
+ {
+ return new SimpleChatHome(chatHomeService);
+ }
+
+ @Bean
+ @ConditionalOnProperty(
+ prefix = "chat.backend.inmemory",
+ name = "sharding-strategy",
+ havingValue = "kafkalike")
+ ChatHome kafkalikeShardingChatHome(
ChatBackendProperties properties,
- InMemoryChatHomeService chatHomeService,
- StorageStrategy storageStrategy)
+ InMemoryChatHomeService chatHomeService)
{
- SimpleChatHome[] chatHomes = new SimpleChatHome[properties.getInmemory().getNumShards()];
- storageStrategy
- .read()
- .subscribe(chatRoom ->
- {
- int shard = chatRoom.getShard();
- if (chatHomes[shard] == null)
- chatHomes[shard] = new SimpleChatHome(chatHomeService, shard);
- });
- return chatHomes;
+ int numShards = properties.getInmemory().getNumShards();
+ SimpleChatHome[] chatHomes = new SimpleChatHome[numShards];
+ IntStream
+ .of(properties.getInmemory().getOwnedShards())
+ .forEach(shard -> chatHomes[shard] = new SimpleChatHome(chatHomeService, shard));
+ ShardingStrategy strategy = new KafkaLikeShardingStrategy(numShards);
+ return new ShardedChatHome(chatHomes, strategy);
}
@Bean
ChatBackendProperties properties,
StorageStrategy storageStrategy)
{
+ ShardingStrategyType sharding =
+ properties.getInmemory().getShardingStrategy();
+ int numShards = sharding == ShardingStrategyType.none
+ ? 1
+ : properties.getInmemory().getNumShards();
+ int[] ownedShards = sharding == ShardingStrategyType.none
+ ? new int[] { 0 }
+ : properties.getInmemory().getOwnedShards();
return new InMemoryChatHomeService(
- properties.getInmemory().getNumShards(),
- properties.getInmemory().getOwnedShards(),
+ numShards,
+ ownedShards,
storageStrategy.read());
}
@Bean
InMemoryChatRoomFactory chatRoomFactory(
+ InMemoryChatHomeService service,
ShardingStrategy strategy,
Clock clock,
ChatBackendProperties properties)
{
return new InMemoryChatRoomFactory(
+ service,
strategy,
clock,
properties.getChatroomBufferSize());