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Dubbo Java 3.0.2 Release Announcement

Apache Dubbo 3.0.2 Release Announcement
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New Features

  • Support for exposing generalized services via the @DubboService annotation
  • XML configuration support for the metadata center with protocol and port attributes
  • Compatibility with versions above curator5
  • Point-to-point calls support wildcard matching, allowing one provider address to correspond to multiple interfaces
  • Dynamic configuration added for application-level service discovery to override rules
  • Provides a switch for dynamic configuration override rules for providers, allowing them to ignore dynamic configuration and not re-expose
  • Supports native image
  • Provides a switch to cancel the execution of the shutdown hook
  • Supports service governance rules for Kubernetes Mesh
  • Netty connection supports SSL configuration

Bug Fixes

  • DubboBootStrap start duplication causes dynamic configuration to be overridden
  • Dynamic configuration rules remain effective after deletion
  • NullPointerException thrown when exposing triple protocol
  • ConfigCenterConfig.setAddress method overwrites the username attribute
  • DefaultFuture.closeChannel destroys consumer-side thread pool
  • TripleClientHandler.writeRequest throws NullPointerException
  • NullPointerException thrown when parsing 3.0 migration rules exception
  • Order issue with Activated Extensions
  • URLAddress.parse method has issues parsing ipv6 addresses
  • User-defined parameters in properties configuration are ineffective
  • Configuration overlap issue when using API model and Spring model simultaneously
  • Application-level service discovery ineffective at startup
  • Nacos registry fails to dynamically detect changes in the number of providers
  • ${dubbo.application} cannot be resolved by the Spring placeholder rules in XML files
  • Issue obtaining the order of instance parameters, first obtaining instance-level parameters, then interface-level parameters
  • Exception thrown when registering application startup listener if DubboConfigBeanInitializer does not exist
  • Mock parameters containing ‘:’ or ‘=’ characters are ineffective
  • NullPointerException when deleting Mesh rules

Optimization

  • Catch exceptions in RemovalTask to ensure semaphore can be released
  • Check for duplicate ReferenceConfig/ServiceConfig using unique service names
  • Optimize random number generation performance
  • If users use interface-level service discovery, do not publish application-interface mapping data to the metadata center
  • Use StringBuilder#append(Char) to improve performance
  • Ensure the order of interfaces in GRPC compiled class files
  • Optimize reference bean placeholder resolution
  • Utilize CompletableFuture#get(long, TimeUnit) in MergeableClusterInvoker for performance improvement
  • Built-in service MetadataService does not delay exposure
  • Optimize the startup logic of ConfigBean and Bootstrap
  • Optimize logic for checking duplicate Configs
  • Use ring data structures for registration notifications
  • Optimize initialization logic for dynamic configurations
  • ConfigManager uses ConcurrentHashMap to remove locking logic, improving equals and toString performance
  • Optimize MetadataInfo equals method and Instance Listener
  • Optimize asynchronous export/refer logic
  • Use TreeSet data structure to ensure the order of application names during application-level service discovery
  • First ten notifications from RegistryNotifier are not delayed
  • dubbo-compile compiles using a new format to generate stubs
  • Mesh service governance rules unify grouping and other rule groupings in the dynamic configuration center, changing DEFAULT_GROUP to dubbo
  • When using nacos as a registration center, parameters can be used in the registration center address to change the grouping in nacos
  • When calculating ServiceInfo reversion, remove runtime parameters to avoid generating multiple revisions
  • Nacos registry wraps exceptions as RpcException on throw
  • Prevent dynamic configuration center from dynamically modifying some permission parameters
  • Optimize initialization process of Config Bean and ensure compatibility with spring 3.x/4.1.x
  • Bootstrap.start method is reentrant, exposing or referencing new services
  • Add classes in the org.apache.dubbo package to the whitelist by default
  • Ensure the uniqueness of generated Config Id and check for previous existence
  • Javaassist compatible with changing override declaration fields
  • Refactor check logic during decoding, throwing exceptions when providers corresponding to path and version are not found
  • When ApplicationModel is null, compatible with adaptive extensions

Code Quality Improvements

Thanks for the contributions that enhance the stability of Apache Dubbo.

#8111, #8147, #8164, #8177, #8180, #8161, #8183, #8205, #8173, #8219, #8228, #8232, #8230, #8236, #8260, #8262, #8252, #8246, #8208, #8278, #8267, #8277, #8291, #8296, #8302, #8175, #8319, #8309, #8336, #8332, #8328, #8355, #8396, #8401, #8395, #8415, #8406, #8411, #8418, #8439, #8404, #8443

Maven Dependency Changes

  • Removed dependency: org.eclipse.collections:eclipse-collections
  • Removed dependency: com.google.guava:guava
  • jetty: 9.4.11.v20180605 -> 9.4.43.v20210629
  • apollo client: 1.1.1 -> 1.8.0
  • snakeyaml: 1.20 -> 1.29
  • tomcat embed: 8.5.31 -> 8.5.69
  • nacos client: 2.0.0 -> 2.0.2
  • swagger: 1.5.19 -> 1.5.24
  • hessian_lite: 3.2.8 -> 3.2.11
Last modified September 30, 2024: Update & Translate Overview Docs (#3040) (d37ebceaea7)