SCB-1282 Support for custom "omegaUniqueIdGenerator" bean.
diff --git a/omega/omega-spring-starter/src/main/java/org/apache/servicecomb/pack/omega/spring/OmegaSpringConfig.java b/omega/omega-spring-starter/src/main/java/org/apache/servicecomb/pack/omega/spring/OmegaSpringConfig.java
index ec8c624..dc49309 100644
--- a/omega/omega-spring-starter/src/main/java/org/apache/servicecomb/pack/omega/spring/OmegaSpringConfig.java
+++ b/omega/omega-spring-starter/src/main/java/org/apache/servicecomb/pack/omega/spring/OmegaSpringConfig.java
@@ -45,6 +45,7 @@
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Qualifier;
 import org.springframework.beans.factory.annotation.Value;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
@@ -57,7 +58,7 @@
 
   private static final Logger LOG = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
 
-
+  @ConditionalOnMissingBean
   @Bean(name = {"omegaUniqueIdGenerator"})
   IdGenerator<String> idGenerator() {
     return new UniqueIdGenerator();