学习笔记

注意

• id的设计,因为设置了unsigned，导致雪花算法产生的id无法插入
  • 纠正：助教反馈之后，不是这个原因，也重新测试了，发现无法复现之前的错误，bigint unsigned也是ok的，感觉是之前ss的配置有问题
• 因为表名设置成了 order， 和mysql的关键字冲突了，导致ss-jdbc在解析sql的时候报错，需要在 sql中将order用``框起来

2020.12.09, 因为一直没时间，先写了一题，后面一题后面补上

问题记录

1. 配置proto生成java code的时候一直报错, 命令 mvn compile

   [INFO] BUILD FAILURE
   [INFO] ------------------------------------------------------------------------
   [INFO] Total time:  2.010 s
   [INFO] Finished at: 2020-12-13T10:00:20+08:00
   [INFO] ------------------------------------------------------------------------
   [ERROR] Failed to execute goal org.xolstice.maven.plugins:protobuf-maven-plugin:0.6.1:compile (default) on project tcc-demo-common: protoc did not exit cleanly. Review output for more information. -> [Help 1]
   [ERROR] 
   [ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
   [ERROR] Re-run Maven using the -X switch to enable full debug logging.
   [ERROR] 
   [ERROR] For more information about the errors and possible solutions, please read the following articles:
   [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException

   一直以为是 protobuf-maven-plugin 的版本问题，没有往上翻错误信息，其实是因为两个proto里面有相同的 message 了

   [ERROR] /Users/wujiajia/IdeaProjects/homework120501/tcc-demo-common/src/main/proto/node.proto [0:0]: chain.proto:23:9: "OpNodeResponse.Code" is already defined in file "node.proto".
   chain.proto:24:10: "OpNodeResponse.Data" is already defined in file "node.proto".
   chain.proto:25:10: "OpNodeResponse.Err" is already defined in file "node.proto".
   chain.proto:21:9: "OpNodeResponse" is already defined in file "node.proto".
   chain.proto:8:41: "OpNodeResponse" seems to be defined in "node.proto", which is not imported by "chain.proto".  To use it here, please add the necessary import.
   
   [ERROR] /Users/wujiajia/IdeaProjects/homework120501/tcc-demo-common/src/main/proto/chain.proto [0:0]: chain.proto:23:9: "OpNodeResponse.Code" is already defined in file "node.proto".
   chain.proto:24:10: "OpNodeResponse.Data" is already defined in file "node.proto".
   chain.proto:25:10: "OpNodeResponse.Err" is already defined in file "node.proto".
   chain.proto:21:9: "OpNodeResponse" is already defined in file "node.proto".
   chain.proto:8:41: "OpNodeResponse" seems to be defined in "node.proto", which is not imported by "chain.proto".  To use it here, please add the necessary import.

2. 配置maven生成不可执行的jar包，需要配置spring-boot-maven-plugin的configuration.layout为NONE

3. proto编写

• 示例

  syntax = "proto3";
  option java_package = "com.github.zibuyu28.chain.service";
  option java_multiple_files = true;
  
  
  service ChainStatusService {
  
    rpc updateStatus(ChainState) returns (ChainStateResponse) {}
  
  }
  
  
  message ChainState {
  
    int32 ChainID = 1;
    int32 State = 2;
    string Message = 3;
  
  }
  
  message ChainStateResponse {
  
    int32 Code = 1;
    string Data = 2;
    string Err = 3;
  
  }

  一开始将service的rpc方法的首字母大写了，导致 GrpcHmilyTransactionFilter 一直无效; 可能是个缺陷

4. hmily测试的时候发现grpc的服务增加HmilyTCC注解无效，测试了官方demo之后也发现一直处于冻结状态，无法cancel，这个问题已经和猫大人反馈并且提了issue，希望能得到解决
   • 2020.12.14：hmily官方已经修复这个缺陷，，目前流程正常