X-Git-Url: http://juplo.de/gitweb/?a=blobdiff_plain;f=src%2Fmain%2Fjava%2Fde%2Fjuplo%2Fkafka%2Fchat%2Fbackend%2Fpersistence%2Finmemory%2FInMemoryServicesConfiguration.java;h=d2fd731eb14f97291b6bf080e967069122900840;hb=df207aa9a8cd349fd43785270d250a7f55593801;hp=20a1b5f650f83de3508a8cf234144754c2527666;hpb=6665467f76198e20f4852f3eb61d53ea9d07bfca;p=demos%2Fkafka%2Fchat

diff --git a/src/main/java/de/juplo/kafka/chat/backend/persistence/inmemory/InMemoryServicesConfiguration.java b/src/main/java/de/juplo/kafka/chat/backend/persistence/inmemory/InMemoryServicesConfiguration.java
index 20a1b5f6..d2fd731e 100644
--- a/src/main/java/de/juplo/kafka/chat/backend/persistence/inmemory/InMemoryServicesConfiguration.java
+++ b/src/main/java/de/juplo/kafka/chat/backend/persistence/inmemory/InMemoryServicesConfiguration.java
@@ -1,25 +1,84 @@
 package de.juplo.kafka.chat.backend.persistence.inmemory;
 
 import de.juplo.kafka.chat.backend.ChatBackendProperties;
+import de.juplo.kafka.chat.backend.domain.ChatHome;
+import de.juplo.kafka.chat.backend.persistence.ShardingStrategy;
 import de.juplo.kafka.chat.backend.persistence.StorageStrategy;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 
 import java.time.Clock;
+import java.util.stream.IntStream;
 
 
+@ConditionalOnProperty(
+    prefix = "chat.backend",
+    name = "services",
+    havingValue = "inmemory",
+    matchIfMissing = true)
 @Configuration
 public class InMemoryServicesConfiguration
 {
   @Bean
-  InMemoryChatHomeService chatHomeService(
+  @ConditionalOnProperty(
+      prefix = "chat.backend.inmemory",
+      name = "sharding-strategy",
+      havingValue = "none",
+      matchIfMissing = true)
+  ChatHome noneShardingChatHome(
+      ChatBackendProperties properties,
       StorageStrategy storageStrategy,
-      Clock clock,
-      ChatBackendProperties properties)
+      Clock clock)
   {
-    return new InMemoryChatHomeService(
-        storageStrategy.read(),
+    return new SimpleChatHome(
+        storageStrategy,
         clock,
         properties.getChatroomBufferSize());
   }
+
+  @Bean
+  @ConditionalOnProperty(
+      prefix = "chat.backend.inmemory",
+      name = "sharding-strategy",
+      havingValue = "kafkalike")
+  ChatHome kafkalikeShardingChatHome(
+      ChatBackendProperties properties,
+      StorageStrategy storageStrategy,
+      Clock clock)
+  {
+    int numShards = properties.getInmemory().getNumShards();
+    SimpleChatHome[] chatHomes = new SimpleChatHome[numShards];
+    IntStream
+        .of(properties.getInmemory().getOwnedShards())
+        .forEach(shard -> chatHomes[shard] = new SimpleChatHome(
+            shard,
+            storageStrategy,
+            clock,
+            properties.getChatroomBufferSize()));
+    ShardingStrategy strategy = new KafkaLikeShardingStrategy(numShards);
+    return new ShardedChatHome(chatHomes, strategy);
+  }
+
+  @ConditionalOnProperty(
+      prefix = "chat.backend.inmemory",
+      name = "sharding-strategy",
+      havingValue = "none",
+      matchIfMissing = true)
+  @Bean
+  ShardingStrategy defaultShardingStrategy()
+  {
+    return chatRoomId -> 0;
+  }
+
+  @ConditionalOnProperty(
+      prefix = "chat.backend.inmemory",
+      name = "sharding-strategy",
+      havingValue = "kafkalike")
+  @Bean
+  ShardingStrategy kafkalikeShardingStrategy(ChatBackendProperties properties)
+  {
+    return new KafkaLikeShardingStrategy(
+        properties.getInmemory().getNumShards());
+  }
 }