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aiceflower

前言#

随着业务的发展和社区产品的更新迭代，我们发现Linkis1.X服务过多，可以适当进行服务合并，减少服务数量，方便部署和调试。目前Linkis服务主要分为三大类，包括计算治理服务（CG: entrance/ecp/ecm/linkismanager）、公共增强服务（PS:publicservice/datasource/cs）和微服务治理服务（MG：Gateway/Eureka）。这三类服务延伸的子服务过多，可以进行服务合并，做到将PS的服务全部合并，CG服务支持全部合并，同时支持将ecm服务单独出去。

服务合并变动#

本次服务合并主要变动如下：

  • 支持Restful服务转发：修改点主要为Gateway的转发逻辑，类似于现在publicservice服务合并参数：wds.linkis.gateway.conf.publicservice.list
  • 支持将RPC服务远程调用改为本地调用，类似LocalMessageSender，现在已经可以通过改Sender完成本地调用的返回
  • 配置文件变动
  • 服务启停脚本变动

待实现目标#

  • 基本目标：合并PS服务为一个服务
  • 基本目标：合并CG服务为CG-Service和ECM
  • 进阶目标：合并CG服务为一个服
  • 终结目标：去掉eureka、gateway变为单体服务

具体变动#

Gateway变动（org.apache.linkis.gateway.ujes.route.HaContextGatewayRouter）#

//变动前override def route(gatewayContext: GatewayContext): ServiceInstance = {
    if (gatewayContext.getGatewayRoute.getRequestURI.contains(HaContextGatewayRouter.CONTEXT_SERVICE_STR) ||        gatewayContext.getGatewayRoute.getRequestURI.contains(HaContextGatewayRouter.OLD_CONTEXT_SERVICE_PREFIX)){      val params: util.HashMap[String, String] = gatewayContext.getGatewayRoute.getParams      if (!gatewayContext.getRequest.getQueryParams.isEmpty) {        for ((k, vArr) <- gatewayContext.getRequest.getQueryParams) {          if (vArr.nonEmpty) {            params.putIfAbsent(k, vArr.head)          }        }      }      if (gatewayContext.getRequest.getHeaders.containsKey(ContextHTTPConstant.CONTEXT_ID_STR)) {        params.putIfAbsent(ContextHTTPConstant.CONTEXT_ID_STR, gatewayContext.getRequest.getHeaders.get(ContextHTTPConstant.CONTEXT_ID_STR)(0))      }      if (null == params || params.isEmpty) {        dealContextCreate(gatewayContext)      } else {        var contextId : String = null        for ((key, value) <- params) {          if (key.equalsIgnoreCase(ContextHTTPConstant.CONTEXT_ID_STR)) {            contextId = value            }        }        if (StringUtils.isNotBlank(contextId)) {          dealContextAccess(contextId.toString, gatewayContext)        } else {          dealContextCreate(gatewayContext)        }      }    }else{      null    }  }  //变动后  override def route(gatewayContext: GatewayContext): ServiceInstance = {
    if (        gatewayContext.getGatewayRoute.getRequestURI.contains(          RPCConfiguration.CONTEXT_SERVICE_REQUEST_PREFIX        )    ) {      val params: util.HashMap[String, String] = gatewayContext.getGatewayRoute.getParams      if (!gatewayContext.getRequest.getQueryParams.isEmpty) {        for ((k, vArr) <- gatewayContext.getRequest.getQueryParams.asScala) {          if (vArr.nonEmpty) {            params.putIfAbsent(k, vArr.head)          }        }      }      if (gatewayContext.getRequest.getHeaders.containsKey(ContextHTTPConstant.CONTEXT_ID_STR)) {        params.putIfAbsent(          ContextHTTPConstant.CONTEXT_ID_STR,          gatewayContext.getRequest.getHeaders.get(ContextHTTPConstant.CONTEXT_ID_STR)(0)        )      }      if (null == params || params.isEmpty) {        dealContextCreate(gatewayContext)      } else {        var contextId: String = null        for ((key, value) <- params.asScala) {          if (key.equalsIgnoreCase(ContextHTTPConstant.CONTEXT_ID_STR)) {            contextId = value          }        }        if (StringUtils.isNotBlank(contextId)) {          dealContextAccess(contextId, gatewayContext)        } else {          dealContextCreate(gatewayContext)        }      }    } else {      null    }  }

  //变动前  def dealContextCreate(gatewayContext:GatewayContext):ServiceInstance = {    val serviceId =  findService(HaContextGatewayRouter.CONTEXT_SERVICE_STR, list => {      val services = list.filter(_.contains(HaContextGatewayRouter.CONTEXT_SERVICE_STR))      services.headOption    })    val serviceInstances = ServiceInstanceUtils.getRPCServerLoader.getServiceInstances(serviceId.orNull)    if (serviceInstances.size > 0) {      val index = new Random().nextInt(serviceInstances.size)      serviceInstances(index)    } else {      logger.error(s"No valid instance for service : " + serviceId.orNull)      null    }  }  //变动后  def dealContextCreate(gatewayContext: GatewayContext): ServiceInstance = {    val serviceId = findService(      RPCConfiguration.CONTEXT_SERVICE_NAME,      list => {        val services = list.filter(_.contains(RPCConfiguration.CONTEXT_SERVICE_NAME))        services.headOption      }    )    val serviceInstances =      ServiceInstanceUtils.getRPCServerLoader.getServiceInstances(serviceId.orNull)    if (serviceInstances.size > 0) {      val index = new Random().nextInt(serviceInstances.size)      serviceInstances(index)    } else {      logger.error(s"No valid instance for service : " + serviceId.orNull)      null    }  }
  //变动前  def dealContextAccess(contextIdStr:String, gatewayContext: GatewayContext):ServiceInstance = {    val contextId : String = {      var tmpId : String = null      if (serializationHelper.accepts(contextIdStr)) {        val contextID : ContextID = serializationHelper.deserialize(contextIdStr).asInstanceOf[ContextID]        if (null != contextID) {          tmpId = contextID.getContextId        } else {          logger.error(s"Deserializate contextID null. contextIDStr : " + contextIdStr)        }      } else {        logger.error(s"ContxtIDStr cannot be deserialized. contextIDStr : " + contextIdStr)      }      if (null == tmpId) {        contextIdStr      } else {        tmpId      }    }    val instances = contextIDParser.parse(contextId)    var serviceId:Option[String] = None    serviceId = findService(HaContextGatewayRouter.CONTEXT_SERVICE_STR, list => {      val services = list.filter(_.contains(HaContextGatewayRouter.CONTEXT_SERVICE_STR))        services.headOption      })    val serviceInstances = ServiceInstanceUtils.getRPCServerLoader.getServiceInstances(serviceId.orNull)    if (instances.size() > 0) {      serviceId.map(ServiceInstance(_, instances.get(0))).orNull    } else if (serviceInstances.size > 0) {      serviceInstances(0)    } else {      logger.error(s"No valid instance for service : " + serviceId.orNull)      null    }  }
}//变动后def dealContextAccess(contextIdStr: String, gatewayContext: GatewayContext): ServiceInstance = {    val contextId: String = {      var tmpId: String = null      if (serializationHelper.accepts(contextIdStr)) {        val contextID: ContextID =          serializationHelper.deserialize(contextIdStr).asInstanceOf[ContextID]        if (null != contextID) {          tmpId = contextID.getContextId        } else {          logger.error(s"Deserializate contextID null. contextIDStr : " + contextIdStr)        }      } else {        logger.error(s"ContxtIDStr cannot be deserialized. contextIDStr : " + contextIdStr)      }      if (null == tmpId) {        contextIdStr      } else {        tmpId      }    }    val instances = contextIDParser.parse(contextId)    var serviceId: Option[String] = None    serviceId = findService(      RPCConfiguration.CONTEXT_SERVICE_NAME,      list => {        val services = list.filter(_.contains(RPCConfiguration.CONTEXT_SERVICE_NAME))        services.headOption      }    )    val serviceInstances =      ServiceInstanceUtils.getRPCServerLoader.getServiceInstances(serviceId.orNull)    if (instances.size() > 0) {      serviceId.map(ServiceInstance(_, instances.get(0))).orNull    } else if (serviceInstances.size > 0) {      serviceInstances(0)    } else {      logger.error(s"No valid instance for service : " + serviceId.orNull)      null    }  }
//变动前object HaContextGatewayRouter{  val CONTEXT_ID_STR:String = "contextId"  val CONTEXT_SERVICE_STR:String = "ps-cs"  @Deprecated  val OLD_CONTEXT_SERVICE_PREFIX = "contextservice"  val CONTEXT_REGEX: Regex = (normalPath(API_URL_PREFIX) + "rest_[a-zA-Z][a-zA-Z_0-9]*/(v\\d+)/contextservice/" + ".+").r}//变动后object HaContextGatewayRouter {
  val CONTEXT_ID_STR: String = "contextId"
  @deprecated("please use RPCConfiguration.CONTEXT_SERVICE_REQUEST_PREFIX")  val CONTEXT_SERVICE_REQUEST_PREFIX = RPCConfiguration.CONTEXT_SERVICE_REQUEST_PREFIX
  @deprecated("please use RPCConfiguration.CONTEXT_SERVICE_NAME")  val CONTEXT_SERVICE_NAME: String =    if (        RPCConfiguration.ENABLE_PUBLIC_SERVICE.getValue && RPCConfiguration.PUBLIC_SERVICE_LIST          .exists(_.equalsIgnoreCase(RPCConfiguration.CONTEXT_SERVICE_REQUEST_PREFIX))    ) {      RPCConfiguration.PUBLIC_SERVICE_APPLICATION_NAME.getValue    } else {      RPCConfiguration.CONTEXT_SERVICE_APPLICATION_NAME.getValue    }
  val CONTEXT_REGEX: Regex =    (normalPath(API_URL_PREFIX) + "rest_[a-zA-Z][a-zA-Z_0-9]*/(v\\d+)/contextservice/" + ".+").r
}

RPC服务变动（org.apache.linkis.rpc.conf.RPCConfiguration）#

//变动前val BDP_RPC_BROADCAST_THREAD_SIZE: CommonVars[Integer] = CommonVars("wds.linkis.rpc.broadcast.thread.num", new Integer(25))//变动后val BDP_RPC_BROADCAST_THREAD_SIZE: CommonVars[Integer] = CommonVars("wds.linkis.rpc.broadcast.thread.num", 25)
//变动前val PUBLIC_SERVICE_LIST: Array[String] = CommonVars("wds.linkis.gateway.conf.publicservice.list", "query,jobhistory,application,configuration,filesystem,udf,variable,microservice,errorcode,bml,datasource").getValue.split(",")//变动后val PUBLIC_SERVICE_LIST: Array[String] = CommonVars("wds.linkis.gateway.conf.publicservice.list", "cs,contextservice,data-source-manager,metadataquery,metadatamanager,query,jobhistory,application,configuration,filesystem,udf,variable,microservice,errorcode,bml,datasource").getValue.split(",")

配置文件变动#

##去除部分
#删除如下配置文件linkis-dist/package/conf/linkis-ps-cs.propertieslinkis-dist/package/conf/linkis-ps-data-source-manager.propertieslinkis-dist/package/conf/linkis-ps-metadataquery.properties
##修改部分
#修改linkis-dist/package/conf/linkis-ps-publicservice.properties#restful修改前wds.linkis.server.restful.scan.packages=org.apache.linkis.jobhistory.restful,org.apache.linkis.variable.restful,org.apache.linkis.configuration.restful,org.apache.linkis.udf.api,org.apache.linkis.filesystem.restful,org.apache.linkis.filesystem.restful,org.apache.linkis.instance.label.restful,org.apache.linkis.metadata.restful.api,org.apache.linkis.cs.server.restful,org.apache.linkis.bml.restful,org.apache.linkis.errorcode.server.restful
#restful修改后wds.linkis.server.restful.scan.packages=org.apache.linkis.cs.server.restful,org.apache.linkis.datasourcemanager.core.restful,org.apache.linkis.metadata.query.server.restful,org.apache.linkis.jobhistory.restful,org.apache.linkis.variable.restful,org.apache.linkis.configuration.restful,org.apache.linkis.udf.api,org.apache.linkis.filesystem.restful,org.apache.linkis.filesystem.restful,org.apache.linkis.instance.label.restful,org.apache.linkis.metadata.restful.api,org.apache.linkis.cs.server.restful,org.apache.linkis.bml.restful,org.apache.linkis.errorcode.server.restful
#mybatis修改前wds.linkis.server.mybatis.mapperLocations=classpath:org/apache/linkis/jobhistory/dao/impl/*.xml,classpath:org/apache/linkis/variable/dao/impl/*.xml,classpath:org/apache/linkis/configuration/dao/impl/*.xml,classpath:org/apache/linkis/udf/dao/impl/*.xml,classpath:org/apache/linkis/instance/label/dao/impl/*.xml,classpath:org/apache/linkis/metadata/hive/dao/impl/*.xml,org/apache/linkis/metadata/dao/impl/*.xml,classpath:org/apache/linkis/bml/dao/impl/*.xml
wds.linkis.server.mybatis.typeAliasesPackage=org.apache.linkis.configuration.entity,org.apache.linkis.jobhistory.entity,org.apache.linkis.udf.entity,org.apache.linkis.variable.entity,org.apache.linkis.instance.label.entity,org.apache.linkis.manager.entity,org.apache.linkis.metadata.domain,org.apache.linkis.bml.entity
wds.linkis.server.mybatis.BasePackage=org.apache.linkis.jobhistory.dao,org.apache.linkis.variable.dao,org.apache.linkis.configuration.dao,org.apache.linkis.udf.dao,org.apache.linkis.instance.label.dao,org.apache.linkis.metadata.hive.dao,org.apache.linkis.metadata.dao,org.apache.linkis.bml.dao,org.apache.linkis.errorcode.server.dao,org.apache.linkis.publicservice.common.lock.dao
#mybatis修改后wds.linkis.server.mybatis.mapperLocations=classpath*:org/apache/linkis/cs/persistence/dao/impl/*.xml,classpath:org/apache/linkis/datasourcemanager/core/dao/mapper/*.xml,classpath:org/apache/linkis/jobhistory/dao/impl/*.xml,classpath:org/apache/linkis/variable/dao/impl/*.xml,classpath:org/apache/linkis/configuration/dao/impl/*.xml,classpath:org/apache/linkis/udf/dao/impl/*.xml,classpath:org/apache/linkis/instance/label/dao/impl/*.xml,classpath:org/apache/linkis/metadata/hive/dao/impl/*.xml,org/apache/linkis/metadata/dao/impl/*.xml,classpath:org/apache/linkis/bml/dao/impl/*.xml
wds.linkis.server.mybatis.typeAliasesPackage=org.apache.linkis.cs.persistence.entity,org.apache.linkis.datasourcemanager.common.domain,org.apache.linkis.datasourcemanager.core.vo,org.apache.linkis.configuration.entity,org.apache.linkis.jobhistory.entity,org.apache.linkis.udf.entity,org.apache.linkis.variable.entity,org.apache.linkis.instance.label.entity,org.apache.linkis.manager.entity,org.apache.linkis.metadata.domain,org.apache.linkis.bml.entity
wds.linkis.server.mybatis.BasePackage=org.apache.linkis.cs.persistence.dao,org.apache.linkis.datasourcemanager.core.dao,org.apache.linkis.jobhistory.dao,org.apache.linkis.variable.dao,org.apache.linkis.configuration.dao,org.apache.linkis.udf.dao,org.apache.linkis.instance.label.dao,org.apache.linkis.metadata.hive.dao,org.apache.linkis.metadata.dao,org.apache.linkis.bml.dao,org.apache.linkis.errorcode.server.dao,org.apache.linkis.publicservice.common.lock.dao

部署脚本变动（linkis-dist/package/sbin/linkis-start-all.sh）#

#服务启动脚本去掉如下部分
#linkis-ps-csSERVER_NAME="ps-cs"SERVER_IP=$CS_INSTALL_IPstartApp
if [ "$ENABLE_METADATA_QUERY" == "true" ]; then  #linkis-ps-data-source-manager  SERVER_NAME="ps-data-source-manager"  SERVER_IP=$DATASOURCE_MANAGER_INSTALL_IP  startApp
  #linkis-ps-metadataquery  SERVER_NAME="ps-metadataquery"  SERVER_IP=$METADATA_QUERY_INSTALL_IP  startAppfi
#linkis-ps-csSERVER_NAME="ps-cs"SERVER_IP=$CS_INSTALL_IPcheckServer
if [ "$ENABLE_METADATA_QUERY" == "true" ]; then  #linkis-ps-data-source-manager  SERVER_NAME="ps-data-source-manager"  SERVER_IP=$DATASOURCE_MANAGER_INSTALL_IP  checkServer
  #linkis-ps-metadataquery  SERVER_NAME="ps-metadataquery"  SERVER_IP=$METADATA_QUERY_INSTALL_IP  checkServerfi

#服务停止脚本去掉如下部分#linkis-ps-csSERVER_NAME="ps-cs"SERVER_IP=$CS_INSTALL_IPstopApp
if [ "$ENABLE_METADATA_QUERY" == "true" ]; then  #linkis-ps-data-source-manager  SERVER_NAME="ps-data-source-manager"  SERVER_IP=$DATASOURCE_MANAGER_INSTALL_IP  stopApp
  #linkis-ps-metadataquery  SERVER_NAME="ps-metadataquery"  SERVER_IP=$METADATA_QUERY_INSTALL_IP  stopAppfi

更多服务合并变动细节参见：https://github.com/apache/incubator-linkis/pull/2927/files