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feat: Introduced a kafka-like `ShardingStrategy` for `inmemory`
[demos/kafka/chat]
/
src
/
main
/
java
/
de
/
juplo
/
kafka
/
chat
/
backend
/
ChatBackendConfiguration.java
diff --git
a/src/main/java/de/juplo/kafka/chat/backend/ChatBackendConfiguration.java
b/src/main/java/de/juplo/kafka/chat/backend/ChatBackendConfiguration.java
index
b9d1d29
..
6e74bb0
100644
(file)
--- a/
src/main/java/de/juplo/kafka/chat/backend/ChatBackendConfiguration.java
+++ b/
src/main/java/de/juplo/kafka/chat/backend/ChatBackendConfiguration.java
@@
-1,16
+1,13
@@
package de.juplo.kafka.chat.backend;
import de.juplo.kafka.chat.backend.domain.ChatHome;
package de.juplo.kafka.chat.backend;
import de.juplo.kafka.chat.backend.domain.ChatHome;
-import com.fasterxml.jackson.databind.ObjectMapper;
-import de.juplo.kafka.chat.backend.domain.ChatroomFactory;
-import de.juplo.kafka.chat.backend.persistence.InMemoryChatroomFactory;
-import de.juplo.kafka.chat.backend.persistence.LocalJsonFilesStorageStrategy;
+import de.juplo.kafka.chat.backend.domain.ChatHomeFactory;
+import de.juplo.kafka.chat.backend.domain.ChatHomeService;
import de.juplo.kafka.chat.backend.persistence.StorageStrategy;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import de.juplo.kafka.chat.backend.persistence.StorageStrategy;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
-import java.nio.file.Paths;
import java.time.Clock;
import java.time.Clock;
@@
-19,33
+16,25
@@
import java.time.Clock;
public class ChatBackendConfiguration
{
@Bean
public class ChatBackendConfiguration
{
@Bean
- public ChatHome chatHome(
- ChatroomFactory chatroomFactory,
- StorageStrategy storageStrategy)
- {
- return new ChatHome(chatroomFactory, storageStrategy.readChatrooms());
- }
-
- @Bean
- public StorageStrategy storageStrategy(
+ ChatHome[] chatHomes(
+ ChatHomeFactory factory,
ChatBackendProperties properties,
ChatBackendProperties properties,
- ObjectMapper mapper,
- InMemoryChatroomFactory chatroomFactory)
- {
- return new LocalJsonFilesStorageStrategy(
- Paths.get(properties.getDatadir()),
- mapper,
- chatroomFactory);
- }
-
- @Bean
- InMemoryChatroomFactory chatroomFactory(ChatBackendProperties properties)
+ StorageStrategy storageStrategy)
{
{
- return new InMemoryChatroomFactory(properties.getChatroomBufferSize());
+ ChatHome[] chatHomes = new ChatHome[properties.getInmemory().getNumShards()];
+ storageStrategy
+ .read()
+ .subscribe(chatRoom ->
+ {
+ int shard = chatRoom.getShard();
+ if (chatHomes[shard] == null)
+ chatHomes[shard] = factory.createChatHome(shard);
+ });
+ return chatHomes;
}
@Bean
}
@Bean
-
public
Clock clock()
+ Clock clock()
{
return Clock.systemDefaultZone();
}
{
return Clock.systemDefaultZone();
}