feat(clickhouse): wire ChunkAccumulator, flush scheduler, and search feature flag

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

cameleer3-server-app/src/main/java/com/cameleer3/server/app/config/IngestionBeanConfig.java

@@ -1,7 +1,10 @@
 package com.cameleer3.server.app.config;
 
+import com.cameleer3.server.core.ingestion.ChunkAccumulator;
+import com.cameleer3.server.core.ingestion.MergedExecution;
 import com.cameleer3.server.core.ingestion.WriteBuffer;
 import com.cameleer3.server.core.storage.model.MetricsSnapshot;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 
@@ -19,4 +22,16 @@ public class IngestionBeanConfig {
     public WriteBuffer<MetricsSnapshot> metricsBuffer(IngestionConfig config) {
         return new WriteBuffer<>(config.getBufferCapacity());
     }
+
+    @Bean
+    @ConditionalOnProperty(name = "clickhouse.enabled", havingValue = "true")
+    public WriteBuffer<MergedExecution> executionBuffer(IngestionConfig config) {
+        return new WriteBuffer<>(config.getBufferCapacity());
+    }
+
+    @Bean
+    @ConditionalOnProperty(name = "clickhouse.enabled", havingValue = "true")
+    public WriteBuffer<ChunkAccumulator.ProcessorBatch> processorBatchBuffer(IngestionConfig config) {
+        return new WriteBuffer<>(config.getBufferCapacity());
+    }
 }

cameleer3-server-app/src/main/java/com/cameleer3/server/app/config/StorageBeanConfig.java

@@ -8,7 +8,12 @@ import com.cameleer3.server.core.admin.AuditRepository;
 import com.cameleer3.server.core.admin.AuditService;
 import com.cameleer3.server.core.detail.DetailService;
 import com.cameleer3.server.core.indexing.SearchIndexer;
+import com.cameleer3.server.app.ingestion.ExecutionFlushScheduler;
+import com.cameleer3.server.app.search.ClickHouseSearchIndex;
+import com.cameleer3.server.app.storage.ClickHouseExecutionStore;
+import com.cameleer3.server.core.ingestion.ChunkAccumulator;
 import com.cameleer3.server.core.ingestion.IngestionService;
+import com.cameleer3.server.core.ingestion.MergedExecution;
 import com.cameleer3.server.core.ingestion.WriteBuffer;
 import com.cameleer3.server.core.storage.*;
 import com.cameleer3.server.core.storage.model.MetricsSnapshot;
@@ -74,4 +79,43 @@ public class StorageBeanConfig {
     public MetricsQueryStore postgresMetricsQueryStore(JdbcTemplate jdbc) {
         return new PostgresMetricsQueryStore(jdbc);
     }
+
+    // ── ClickHouse Execution Store ──────────────────────────────────────
+
+    @Bean
+    @ConditionalOnProperty(name = "clickhouse.enabled", havingValue = "true")
+    public ClickHouseExecutionStore clickHouseExecutionStore(
+            @Qualifier("clickHouseJdbcTemplate") JdbcTemplate clickHouseJdbc) {
+        return new ClickHouseExecutionStore(clickHouseJdbc);
+    }
+
+    @Bean
+    @ConditionalOnProperty(name = "clickhouse.enabled", havingValue = "true")
+    public ChunkAccumulator chunkAccumulator(
+            WriteBuffer<MergedExecution> executionBuffer,
+            WriteBuffer<ChunkAccumulator.ProcessorBatch> processorBatchBuffer) {
+        return new ChunkAccumulator(
+                executionBuffer::offer,
+                processorBatchBuffer::offer,
+                java.time.Duration.ofMinutes(5));
+    }
+
+    @Bean
+    @ConditionalOnProperty(name = "clickhouse.enabled", havingValue = "true")
+    public ExecutionFlushScheduler executionFlushScheduler(
+            WriteBuffer<MergedExecution> executionBuffer,
+            WriteBuffer<ChunkAccumulator.ProcessorBatch> processorBatchBuffer,
+            ClickHouseExecutionStore executionStore,
+            ChunkAccumulator accumulator,
+            IngestionConfig config) {
+        return new ExecutionFlushScheduler(executionBuffer, processorBatchBuffer,
+                executionStore, accumulator, config);
+    }
+
+    @Bean
+    @ConditionalOnProperty(name = "cameleer.storage.search", havingValue = "clickhouse")
+    public SearchIndex clickHouseSearchIndex(
+            @Qualifier("clickHouseJdbcTemplate") JdbcTemplate clickHouseJdbc) {
+        return new ClickHouseSearchIndex(clickHouseJdbc);
+    }
 }

cameleer3-server-app/src/main/java/com/cameleer3/server/app/search/OpenSearchIndex.java

@@ -20,6 +20,7 @@ import org.opensearch.client.opensearch.indices.*;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Value;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
 import org.springframework.stereotype.Repository;
 
 import java.io.IOException;
@@ -30,6 +31,7 @@ import java.util.*;
 import java.util.stream.Collectors;
 
 @Repository
+@ConditionalOnProperty(name = "cameleer.storage.search", havingValue = "opensearch", matchIfMissing = true)
 public class OpenSearchIndex implements SearchIndex {
 
     private static final Logger log = LoggerFactory.getLogger(OpenSearchIndex.class);

cameleer3-server-app/src/main/resources/application.yml

@@ -50,6 +50,7 @@ cameleer:
   retention-days: ${CAMELEER_RETENTION_DAYS:30}
   storage:
     metrics: ${CAMELEER_STORAGE_METRICS:postgres}
+    search: ${CAMELEER_STORAGE_SEARCH:opensearch}
 
 security:
   access-token-expiry-ms: 3600000

deploy/base/server.yaml

@@ -91,6 +91,8 @@ spec:
                   key: CLICKHOUSE_PASSWORD
             - name: CAMELEER_STORAGE_METRICS
               value: "postgres"
+            - name: CAMELEER_STORAGE_SEARCH
+              value: "opensearch"
 
           resources:
             requests: