servicecomb-pack
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apache
Apache ServiceComb Pack is an eventually data consistency solution for micro-service applications. ServiceComb Pack currently provides TCC and Saga distributed transaction co-ordination solutions by u...
## 重复的主键 ``` Caused by: org.eclipse.persistence.exceptions.DatabaseException: Internal Exception: org.postgresql.util.PSQLException: ERROR: duplicate key value violates unique constraint "tcc_global_tx_event_index" 详细：Key (globaltxid, localtxid, parenttxid, txtype)=(396bd3d1-ec79-4dfa-aef3-dbe21772ec79, 396bd3d1-ec79-4dfa-aef3-dbe21772ec79, , END_TIMEOUT) already exists. Error Code: 0...
I found that servicecomb uses PostgreSQL by default. Is there any consideration for this? Is there a priority for the two choices of MySQL and PostgreSQL?
1、springboot框架还是比较大的，想只基于spring开发，是否可以剥离springboot框架 2、使用的中间件，如：Kafka、缓存、数据库是否可以提供接口，由业务方进行适配实现接口进行对接 3、当前很多场景是通过异步回调的方式来判断分支事务是否结束，不是同一个线程，怎么在回调方法里面来告诉alpha事务的结果 4、一个分支事务会增加时延几十毫秒甚至上百毫秒，性能需要再优化
demo启动报错
"C:\Program Files\Java\jdk1.8.0_181\bin\java.exe" -agentlib:jdwp=transport=dt_socket,address=127.0.0.1:55576,suspend=y,server=n -javaagent:D:\SOFTINSTALL\ideaIU_2020.2.4_demo\plugins\java\lib\rt\debugger-agent.jar -Dfile.encoding=UTF-8 -classpath "C:\Program Files\Java\jdk1.8.0_181\jre\lib\charsets.jar;C:\Program Files\Java\jdk1.8.0_181\jre\lib\deploy.jar;C:\Program Files\Java\jdk1.8.0_181\jre\lib\ext\access-bridge-64.jar;C:\Program Files\Java\jdk1.8.0_181\jre\lib\ext\cldrdata.jar;C:\Program Files\Java\jdk1.8.0_181\jre\lib\ext\dnsns.jar;C:\Program Files\Java\jdk1.8.0_181\jre\lib\ext\jaccess.jar;C:\Program Files\Java\jdk1.8.0_181\jre\lib\ext\jfxrt.jar;C:\Program Files\Java\jdk1.8.0_181\jre\lib\ext\localedata.jar;C:\Program Files\Java\jdk1.8.0_181\jre\lib\ext\nashorn.jar;C:\Program Files\Java\jdk1.8.0_181\jre\lib\ext\sunec.jar;C:\Program Files\Java\jdk1.8.0_181\jre\lib\ext\sunjce_provider.jar;C:\Program Files\Java\jdk1.8.0_181\jre\lib\ext\sunmscapi.jar;C:\Program Files\Java\jdk1.8.0_181\jre\lib\ext\sunpkcs11.jar;C:\Program Files\Java\jdk1.8.0_181\jre\lib\ext\zipfs.jar;C:\Program Files\Java\jdk1.8.0_181\jre\lib\javaws.jar;C:\Program Files\Java\jdk1.8.0_181\jre\lib\jce.jar;C:\Program Files\Java\jdk1.8.0_181\jre\lib\jfr.jar;C:\Program Files\Java\jdk1.8.0_181\jre\lib\jfxswt.jar;C:\Program Files\Java\jdk1.8.0_181\jre\lib\jsse.jar;C:\Program Files\Java\jdk1.8.0_181\jre\lib\management-agent.jar;C:\Program Files\Java\jdk1.8.0_181\jre\lib\plugin.jar;C:\Program Files\Java\jdk1.8.0_181\jre\lib\resources.jar;C:\Program Files\Java\jdk1.8.0_181\jre\lib\rt.jar;D:\WORKSPACE\sagademo-master\booking\target\classes;D:\repo\demo\org\springframework\boot\spring-boot-starter\2.4.1\spring-boot-starter-2.4.1.jar;D:\repo\demo\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar;D:\repo\demo\org\springframework\spring-context\5.2.5.RELEASE\spring-context-5.2.5.RELEASE.jar;D:\repo\demo\org\springframework\boot\spring-boot-autoconfigure\2.2.6.RELEASE\spring-boot-autoconfigure-2.2.6.RELEASE.jar;D:\repo\demo\org\springframework\boot\spring-boot-starter-logging\2.2.6.RELEASE\spring-boot-starter-logging-2.2.6.RELEASE.jar;D:\repo\demo\ch\qos\logback\logback-classic\1.2.3\logback-classic-1.2.3.jar;D:\repo\demo\ch\qos\logback\logback-core\1.2.3\logback-core-1.2.3.jar;D:\repo\demo\org\apache\logging\log4j\log4j-to-slf4j\2.12.1\log4j-to-slf4j-2.12.1.jar;D:\repo\demo\org\apache\logging\log4j\log4j-api\2.12.1\log4j-api-2.12.1.jar;D:\repo\demo\org\slf4j\jul-to-slf4j\1.7.30\jul-to-slf4j-1.7.30.jar;D:\repo\demo\jakarta\annotation\jakarta.annotation-api\1.3.5\jakarta.annotation-api-1.3.5.jar;D:\repo\demo\org\springframework\spring-core\5.2.5.RELEASE\spring-core-5.2.5.RELEASE.jar;D:\repo\demo\org\springframework\spring-jcl\5.2.5.RELEASE\spring-jcl-5.2.5.RELEASE.jar;D:\repo\demo\org\yaml\snakeyaml\1.25\snakeyaml-1.25.jar;D:\repo\demo\org\springframework\boot\spring-boot-starter-web\2.2.6.RELEASE\spring-boot-starter-web-2.2.6.RELEASE.jar;D:\repo\demo\org\springframework\boot\spring-boot-starter-json\2.2.6.RELEASE\spring-boot-starter-json-2.2.6.RELEASE.jar;D:\repo\demo\com\fasterxml\jackson\core\jackson-databind\2.10.3\jackson-databind-2.10.3.jar;D:\repo\demo\com\fasterxml\jackson\core\jackson-annotations\2.10.3\jackson-annotations-2.10.3.jar;D:\repo\demo\com\fasterxml\jackson\core\jackson-core\2.10.3\jackson-core-2.10.3.jar;D:\repo\demo\com\fasterxml\jackson\datatype\jackson-datatype-jdk8\2.10.3\jackson-datatype-jdk8-2.10.3.jar;D:\repo\demo\com\fasterxml\jackson\datatype\jackson-datatype-jsr310\2.10.3\jackson-datatype-jsr310-2.10.3.jar;D:\repo\demo\com\fasterxml\jackson\module\jackson-module-parameter-names\2.10.3\jackson-module-parameter-names-2.10.3.jar;D:\repo\demo\org\springframework\boot\spring-boot-starter-tomcat\2.2.6.RELEASE\spring-boot-starter-tomcat-2.2.6.RELEASE.jar;D:\repo\demo\org\apache\tomcat\embed\tomcat-embed-core\9.0.33\tomcat-embed-core-9.0.33.jar;D:\repo\demo\org\apache\tomcat\embed\tomcat-embed-el\9.0.33\tomcat-embed-el-9.0.33.jar;D:\repo\demo\org\apache\tomcat\embed\tomcat-embed-websocket\9.0.33\tomcat-embed-websocket-9.0.33.jar;D:\repo\demo\org\springframework\boot\spring-boot-starter-validation\2.2.6.RELEASE\spring-boot-starter-validation-2.2.6.RELEASE.jar;D:\repo\demo\jakarta\validation\jakarta.validation-api\2.0.2\jakarta.validation-api-2.0.2.jar;D:\repo\demo\org\hibernate\validator\hibernate-validator\6.0.18.Final\hibernate-validator-6.0.18.Final.jar;D:\repo\demo\org\jboss\logging\jboss-logging\3.4.1.Final\jboss-logging-3.4.1.Final.jar;D:\repo\demo\com\fasterxml\classmate\1.5.1\classmate-1.5.1.jar;D:\repo\demo\org\springframework\spring-web\5.2.5.RELEASE\spring-web-5.2.5.RELEASE.jar;D:\repo\demo\org\springframework\spring-beans\5.2.5.RELEASE\spring-beans-5.2.5.RELEASE.jar;D:\repo\demo\org\springframework\spring-webmvc\5.2.5.RELEASE\spring-webmvc-5.2.5.RELEASE.jar;D:\repo\demo\org\springframework\spring-aop\5.2.5.RELEASE\spring-aop-5.2.5.RELEASE.jar;D:\repo\demo\org\springframework\spring-expression\5.2.5.RELEASE\spring-expression-5.2.5.RELEASE.jar;D:\repo\demo\org\apache\servicecomb\spring-boot-starter-provider\1.3.1\spring-boot-starter-provider-1.3.1.jar;D:\repo\demo\org\apache\servicecomb\spring-boot-starter-servicecomb\1.3.1\spring-boot-starter-servicecomb-1.3.1.jar;D:\repo\demo\org\apache\tomcat\embed\tomcat-embed-logging-juli\8.5.2\tomcat-embed-logging-juli-8.5.2.jar;D:\repo\demo\org\apache\servicecomb\provider-springmvc\1.3.1\provider-springmvc-1.3.1.jar;D:\repo\demo\org\apache\servicecomb\provider-rest-common\1.3.1\provider-rest-common-1.3.1.jar;D:\repo\demo\org\apache\servicecomb\swagger-invocation-springmvc\1.3.1\swagger-invocation-springmvc-1.3.1.jar;D:\repo\demo\org\apache\servicecomb\swagger-invocation-core\1.3.1\swagger-invocation-core-1.3.1.jar;D:\repo\demo\com\google\inject\guice\4.2.0\guice-4.2.0.jar;D:\repo\demo\org\apache\servicecomb\swagger-generator-springmvc\1.3.1\swagger-generator-springmvc-1.3.1.jar;D:\repo\demo\org\apache\servicecomb\swagger-generator-core\1.3.1\swagger-generator-core-1.3.1.jar;D:\repo\demo\io\swagger\swagger-core\1.5.22\swagger-core-1.5.22.jar;D:\repo\demo\com\fasterxml\jackson\dataformat\jackson-dataformat-yaml\2.10.3\jackson-dataformat-yaml-2.10.3.jar;D:\repo\demo\io\swagger\swagger-models\1.5.22\swagger-models-1.5.22.jar;D:\repo\demo\io\swagger\swagger-annotations\1.5.22\swagger-annotations-1.5.22.jar;D:\repo\demo\javax\validation\validation-api\2.0.1.Final\validation-api-2.0.1.Final.jar;D:\repo\demo\org\apache\servicecomb\provider-jaxrs\1.3.1\provider-jaxr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;D:\repo\demo\org\antlr\antlr4-runtime\4.7\antlr4-runtime-4.7.jar;D:\repo\demo\org\antlr\antlr-runtime\3.5.2\antlr-runtime-3.5.2.jar;D:\repo\demo\org\antlr\ST4\4.0.8\ST4-4.0.8.jar;D:\repo\demo\org\glassfish\javax.json\1.0.4\javax.json-1.0.4.jar;D:\repo\demo\com\ibm\icu\icu4j\58.2\icu4j-58.2.jar;D:\repo\demo\com\google\inject\extensions\guice-multibindings\4.1.0\guice-multibindings-4.1.0.jar;D:\repo\demo\com\google\inject\extensions\guice-assistedinject\4.1.0\guice-assistedinject-4.1.0.jar;D:\repo\demo\io\protostuff\protostuff-runtime\1.5.9\protostuff-runtime-1.5.9.jar;D:\repo\demo\io\protostuff\protostuff-api\1.5.9\protostuff-api-1.5.9.jar;D:\repo\demo\io\protostuff\protostuff-collectionschema\1.5.9\protostuff-collectionschema-1.5.9.jar;D:\repo\demo\io\protostuff\protostuff-core\1.5.9\protostuff-core-1.5.9.jar;D:\repo\demo\org\apache\servicecomb\transport-common\1.3.1\transport-common-1.3.1.jar;D:\repo\demo\org\apache\servicecomb\foundation-config\1.3.1\foundation-config-1.3.1.jar;D:\repo\demo\org\apache\servicecomb\handler-flowcontrol-qps\1.3.1\handler-flowcontrol-qps-1.3.1.jar;D:\repo\demo\org\apache\servicecomb\transport-rest-vertx\1.3.1\transport-rest-vertx-1.3.1.jar;D:\repo\demo\org\apache\servicecomb\transport-rest-client\1.3.1\transport-rest-client-1.3.1.jar;D:\repo\demo\org\apache\servicecomb\common-rest\1.3.1\common-rest-1.3.1.jar;D:\repo\demo\org\apache\servicecomb\pack\omega-spring-starter\0.4.0\omega-spring-starter-0.4.0.jar;D:\repo\demo\org\apache\servicecomb\pack\omega-spring-tx\0.4.0\omega-spring-tx-0.4.0.jar;D:\repo\demo\org\apache\servicecomb\pack\omega-format\0.4.0\omega-format-0.4.0.jar;D:\repo\demo\com\esotericsoftware\kryo\4.0.1\kryo-4.0.1.jar;D:\repo\demo\com\esotericsoftware\reflectasm\1.11.3\reflectasm-1.11.3.jar;D:\repo\demo\org\ow2\asm\asm\5.0.4\asm-5.0.4.jar;D:\repo\demo\com\esotericsoftware\minlog\1.3.0\minlog-1.3.0.jar;D:\repo\demo\org\objenesis\objenesis\2.5.1\objenesis-2.5.1.jar;D:\repo\demo\io\grpc\grpc-netty\1.14.0\grpc-netty-1.14.0.jar;D:\repo\demo\io\grpc\grpc-core\1.14.0\grpc-core-1.14.0.jar;D:\repo\demo\io\grpc\grpc-context\1.14.0\grpc-context-1.14.0.jar;D:\repo\demo\com\google\code\gson\gson\2.8.6\gson-2.8.6.jar;D:\repo\demo\com\google\guava\guava\20.0\guava-20.0.jar;D:\repo\demo\com\google\errorprone\error_prone_annotations\2.1.2\error_prone_annotations-2.1.2.jar;D:\repo\demo\io\opencensus\opencensus-api\0.12.3\opencensus-api-0.12.3.jar;D:\repo\demo\io\opencensus\opencensus-contrib-grpc-metrics\0.12.3\opencensus-contrib-grpc-metrics-0.12.3.jar;D:\repo\demo\io\netty\netty-codec-http2\4.1.48.Final\netty-codec-http2-4.1.48.Final.jar;D:\repo\demo\io\netty\netty-common\4.1.48.Final\netty-common-4.1.48.Final.jar;D:\repo\demo\io\netty\netty-buffer\4.1.48.Final\netty-buffer-4.1.48.Final.jar;D:\repo\demo\io\netty\netty-transport\4.1.48.Final\netty-transport-4.1.48.Final.jar;D:\repo\demo\io\netty\netty-resolver\4.1.48.Final\netty-resolver-4.1.48.Final.jar;D:\repo\demo\io\netty\netty-codec\4.1.48.Final\netty-codec-4.1.48.Final.jar;D:\repo\demo\io\netty\netty-handler\4.1.48.Final\netty-handler-4.1.48.Final.jar;D:\repo\demo\io\netty\netty-codec-http\4.1.48.Final\netty-codec-http-4.1.48.Final.jar;D:\repo\demo\io\netty\netty-handler-proxy\4.1.48.Final\netty-handler-proxy-4.1.48.Final.jar;D:\repo\demo\io\netty\netty-codec-socks\4.1.48.Final\netty-codec-socks-4.1.48.Final.jar;D:\repo\demo\io\grpc\grpc-stub\1.14.0\grpc-stub-1.14.0.jar;D:\repo\demo\org\apache\servicecomb\pack\omega-connector-grpc\0.4.0\omega-connector-grpc-0.4.0.jar;D:\repo\demo\io\grpc\grpc-protobuf\1.14.0\grpc-protobuf-1.14.0.jar;D:\repo\demo\com\google\protobuf\protobuf-java\3.5.1\protobuf-java-3.5.1.jar;D:\repo\demo\com\google\api\grpc\proto-google-common-protos\1.0.0\proto-google-common-protos-1.0.0.jar;D:\repo\demo\io\grpc\grpc-protobuf-lite\1.14.0\grpc-protobuf-lite-1.14.0.jar;D:\repo\demo\io\netty\netty-tcnative-boringssl-static\2.0.30.Final\netty-tcnative-boringssl-static-2.0.30.Final.jar;D:\repo\demo\org\apache\servicecomb\pack\pack-contract-grpc\0.4.0\pack-contract-grpc-0.4.0.jar;D:\repo\demo\org\slf4j\slf4j-api\1.7.30\slf4j-api-1.7.30.jar;D:\repo\demo\org\apache\servicecomb\pack\omega-transport-resttemplate\0.4.0\omega-transport-resttemplate-0.4.0.jar;D:\repo\demo\javax\servlet\javax.servlet-api\4.0.1\javax.servlet-api-4.0.1.jar;D:\repo\demo\org\springframework\spring-test\5.2.5.RELEASE\spring-test-5.2.5.RELEASE.jar;D:\repo\demo\org\apache\servicecomb\pack\omega-context\0.4.0\omega-context-0.4.0.jar;D:\repo\demo\org\apache\servicecomb\pack\omega-transaction\0.4.0\omega-transaction-0.4.0.jar;D:\repo\demo\org\apache\servicecomb\pack\pack-common\0.4.0\pack-common-0.4.0.jar;D:\repo\demo\org\aspectj\aspectjweaver\1.9.5\aspectjweaver-1.9.5.jar;D:\repo\demo\javax\transaction\javax.transaction-api\1.3\javax.transaction-api-1.3.jar;D:\repo\demo\org\apache\maven\plugins\maven-compiler-plugin\3.2\maven-compiler-plugin-3.2.jar;D:\repo\demo\org\apache\maven\maven-plugin-api\2.0.9\maven-plugin-api-2.0.9.jar;D:\repo\demo\or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import org.apache.servicecomb.pack.contract.grpc.ServerMeta; 这个类报红 还有下面这些.大佬能帮忙看看嘛 import org.apache.servicecomb.pack.contract.grpc.GrpcAck; import org.apache.servicecomb.pack.contract.grpc.GrpcCompensateCommand; import org.apache.servicecomb.pack.contract.grpc.GrpcServiceConfig; import org.apache.servicecomb.pack.contract.grpc.GrpcTxEvent; import org.apache.servicecomb.pack.contract.grpc.ServerMeta; import org.apache.servicecomb.pack.contract.grpc.TxEventServiceGrpc; import org.apache.servicecomb.pack.contract.grpc.TxEventServiceGrpc.TxEventServiceBlockingStub; import org.apache.servicecomb.pack.contract.grpc.TxEventServiceGrpc.TxEventServiceStub;
omega 只会在启动的时候，会读取所有的alpha所有的地址信息，并初始化channel,如果中间某个alpah 挂掉，omege是感知不到的，即使接入了注册中心，即使注册中心客户端刷新了alpha的地址，omega也没有重新刷新channel，所以omega 接入注册中心的意义在哪里
1 Compile the code and run the relevant unit tests. As there may be errors in the unit tests, the compilation may be terminated. You can ignore the test errors....
