feature: add event sourcing microservice init

src/main/java/com/eventsourcing/bankAccount/queries/BankAccountQueryHandler.java

@@ -0,0 +1,24 @@
+package com.eventsourcing.bankAccount.queries;
+
+import com.eventsourcing.bankAccount.domain.BankAccountAggregate;
+import com.eventsourcing.bankAccount.dto.BankAccountResponseDTO;
+import com.eventsourcing.es.EventStoreDB;
+import com.eventsourcing.mappers.BankAccountMapper;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+
+
+@Slf4j
+@RequiredArgsConstructor
+public class BankAccountQueryHandler implements BankAccountQueryService {
+
+    private final EventStoreDB eventStoreDB;
+
+    @Override
+    public BankAccountResponseDTO handle(GetBankAccountByIDQuery query) {
+        final var aggregate = eventStoreDB.load(query.aggregateID(), BankAccountAggregate.class);
+        final var bankAccountResponseDTO = BankAccountMapper.bankAccountResponseDTOFromAggregate(aggregate);
+        log.info("(GetBankAccountByIDQuery) response: {}", bankAccountResponseDTO);
+        return bankAccountResponseDTO;
+    }
+}