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我使用DSS 3.5.0和PostgreSQL，並且請求框中的一組操作不是以非常特殊的方式工作。我已經成功地在同一個項目中使用了包含數千個操作的請求框，包括非常類似於那些失敗的操作。其中一個大的請求框失敗了，花了一些時間尋找導致問題的操作之後，我們能夠將它減少到一組五個操作。DSS boxcarring跳過操作
問題
望着PostgreSQL的日誌，不執行由操作之一發出的查詢，因爲它永遠不會到達數據庫。
，我會打電話的操作O1，O2，O3，O4和O5和他們的查詢Q1，Q2，Q3，Q4和Q5。與請求播放並檢查所產生的數據庫日誌，我們結束了：
- 請求對話框包含
O1-O2-O3-O4-O5：數據庫中執行Q1-Q2-Q3-Q5 - 請求對話框包含
O1-O2-O4-O5：數據庫執行Q1-Q2-Q4-Q5 - 請求對話框包含
O1-O2-O3-O4：數據庫執行Q1-Q2-Q3-Q4 - 請求對話框包含
O1-O2-O3-O4-O4-O5：數據庫執行Q1-Q2-Q3-Q5
所以，它看起來很奇怪，它似乎沒有遵循明確可辨的模式。
如果單獨發送到DSS或在兩個不同的請求框中，所有操作都會正確執行。操作的確切性質似乎並不直接與問題直接相關，因爲在其他情況下無數次使用相同的操作。查詢不是特別長或很複雜。
- 操作1：更新表中的記錄甲
- 操作2：刪除從表B中的記錄
- 操作3：插入在表B中的記錄
- 操作4：插入一個記錄在表甲
- 操作5：在插入表B中的記錄（相同操作3）
錯誤和日誌
PostgreSQL出於操作5發出實際的錯誤信息是
ERROR: null value in column "element_id" violates not-null constraint
這是預期的，因爲操作4（即消失的一個）插入稍後用於解析element_id操作5.
PostgreSQL的日誌報告：
LOG: execute <unnamed>: BEGIN
LOG: execute <unnamed>: UPDATE public.project_element SET element_uuid=$1,location_id=$2,from_revit=$3,name=$4,type=$5,model=NULLIF($6,0),parent_element=(SELECT PE.ELEMENT_ID FROM PROJECT_ELEMENT PE WHERE PE.PROJECT_ID = $7 AND (PE.ELEMENT_ID = $8 OR (PE.ELEMENT_UUID = $9 AND PE.ELEMENT_UUID IS NOT NULL))) ,left_border=$10,right_border=$11 WHERE element_id=$12
DETAIL: parameters: $1 = '(element-uuid)', $2 = '85', $3 = '1', $4 = '(some-text)', $5 = '3', $6 = '0', $7 = '22', $8 = NULL, $9 = '(parent-uuid)', $10 = NULL, $11 = NULL, $12 = '9983'
LOG: execute <unnamed>: DELETE FROM ELEMENT_PROPERTY WHERE ELEMENT_ID = (SELECT PE.ELEMENT_ID FROM PROJECT_ELEMENT PE WHERE PE.ELEMENT_ID = $1 AND PE.PROJECT_ID = $2) AND NAME = $3
DETAIL: parameters: $1 = '9983', $2 = '22', $3 = 'num_ports'
LOG: execute <unnamed>: INSERT INTO public.element_property(name,value,type,element_id) VALUES($1,$2,$3,(^M SELECT PE.ELEMENT_ID FROM PROJECT_ELEMENT PE WHERE PE.PROJECT_ID = $4 AND (PE.ELEMENT_ID = $5 OR (PE.ELEMENT_UUID = $6 AND PE.ELEMENT_UUID IS NOT NULL))))
DETAIL: parameters: $1 = 'num_ports', $2 = '48', $3 = '0', $4 = '22', $5 = NULL, $6 = '(element-uuid)'
LOG: execute <unnamed>: INSERT INTO public.element_property(name,value,type,element_id) VALUES($1,$2,$3,(SELECT PE.ELEMENT_ID FROM PROJECT_ELEMENT PE WHERE PE.PROJECT_ID = $4 AND (PE.ELEMENT_ID = $5 OR (PE.ELEMENT_UUID = $6 AND PE.ELEMENT_UUID IS NOT NULL))))
DETAIL: parameters: $1 = 'port_num', $2 = '6', $3 = '0', $4 = '22', $5 = NULL, $6 = '(other-uuid)'
ERROR: null value in column "element_id" violates not-null constraint
DETAIL: Failing row contains (port_num, 6, 0, null).
STATEMENT: INSERT INTO public.element_property(name,value,type,element_id) VALUES($1,$2,$3,(SELECT PE.ELEMENT_ID FROM PROJECT_ELEMENT PE WHERE PE.PROJECT_ID = $4 AND (PE.ELEMENT_ID = $5 OR (PE.ELEMENT_UUID = $6 AND PE.ELEMENT_UUID IS NOT NULL))))
LOG: execute S_2: BEGIN
LOG: execute S_1: ROLLBACK
DSS日誌，異常啓動，但我不知道它是否真的涉及到t他的問題。以下日誌從請求框開始到第一次投訴PostgreSQL返回的錯誤消息。此後DSS多次抱怨。
DEBUG - {org.apache.axis2.transport.http.AxisServlet}
java.lang.NullPointerException
at javax.servlet.GenericServlet.getServletContext(GenericServlet.java:123)
at org.apache.axis2.transport.http.AxisServlet.createMessageContext(AxisServlet.java:715)
at org.apache.axis2.transport.http.AxisServlet$RestRequestProcessor.<init>(AxisServlet.java:819)
at org.apache.axis2.transport.http.AxisServlet.doPost(AxisServlet.java:227)
at org.wso2.carbon.core.transports.CarbonServlet.doPost(CarbonServlet.java:231)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:646)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at org.eclipse.equinox.http.servlet.internal.ServletRegistration.service(ServletRegistration.java:61)
at org.eclipse.equinox.http.servlet.internal.ProxyServlet.processAlias(ProxyServlet.java:128)
at org.eclipse.equinox.http.servlet.internal.ProxyServlet.service(ProxyServlet.java:68)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at org.wso2.carbon.tomcat.ext.servlet.DelegationServlet.service(DelegationServlet.java:68)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.wso2.carbon.ui.filters.CSRFPreventionFilter.doFilter(CSRFPreventionFilter.java:88)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.wso2.carbon.ui.filters.CRLFPreventionFilter.doFilter(CRLFPreventionFilter.java:59)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.wso2.carbon.tomcat.ext.filter.CharacterSetFilter.doFilter(CharacterSetFilter.java:61)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:504)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.wso2.carbon.tomcat.ext.valves.CompositeValve.continueInvocation(CompositeValve.java:99)
at org.wso2.carbon.tomcat.ext.valves.CarbonTomcatValve$1.invoke(CarbonTomcatValve.java:47)
at org.wso2.carbon.webapp.mgt.TenantLazyLoaderValve.invoke(TenantLazyLoaderValve.java:57)
at org.wso2.carbon.tomcat.ext.valves.TomcatValveContainer.invokeValves(TomcatValveContainer.java:47)
at org.wso2.carbon.tomcat.ext.valves.CompositeValve.invoke(CompositeValve.java:62)
at org.wso2.carbon.tomcat.ext.valves.CarbonStuckThreadDetectionValve.invoke(CarbonStuckThreadDetectionValve.java:159)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
at org.wso2.carbon.tomcat.ext.valves.CarbonContextCreatorValve.invoke(CarbonContextCreatorValve.java:57)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:421)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1074)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:611)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1739)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1698)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:744)
DEBUG - Input contentType (application/json) {org.apache.axis2.builder.BuilderUtil}
DEBUG - CharSetEncoding defaulted (UTF-8) {org.apache.axis2.builder.BuilderUtil}
DEBUG - [MessageContext: logID=f9462531f982d008b3e2aacd88bfd07f4a7e4905c354170e] Checking for Service using target endpoint address : /services/iims {org.apache.axis2.dispatchers.RequestURIBasedServiceDispatcher}
DEBUG - org.apache.axis2.i18n.resource::handleGetObject(servicefound) {org.apache.axis2.i18n.ProjectResourceBundle}
DEBUG - [MessageContext: logID=f9462531f982d008b3e2aacd88bfd07f4a7e4905c354170e] Found AxisService : iims {org.apache.axis2.engine.AbstractDispatcher}
DEBUG - Attempt to check for Operation using HTTP Location failed {org.apache.axis2.dispatchers.HTTPLocationBasedDispatcher}
DEBUG - [MessageContext: logID=f9462531f982d008b3e2aacd88bfd07f4a7e4905c354170e] Attempted to check for Operation using target endpoint URI, but the operation fragment was missing {org.apache.axis2.dispatchers.RequestURIBasedOperationDispatcher}
DEBUG - getAction (null) from [email protected] {org.apache.axis2.client.Options}
DEBUG - SoapAction is (null) {org.apache.axis2.context.MessageContext}
DEBUG - createSOAPEnvelope using Builder (class org.apache.axis2.json.JSONOMBuilder) selected from type (application/json) {org.apache.axis2.transport.TransportUtils}
DEBUG - getAction (null) from [email protected] {org.apache.axis2.client.Options}
DEBUG - SoapAction is (null) {org.apache.axis2.context.MessageContext}
DEBUG - [MessageContext: logID=f9462531f982d008b3e2aacd88bfd07f4a7e4905c354170e] Checking for Operation using Action : null {org.apache.axis2.dispatchers.ActionBasedOperationDispatcher}
DEBUG - [MessageContext: logID=f9462531f982d008b3e2aacd88bfd07f4a7e4905c354170e] Attempted to check for Operation using target endpoint URI, but the operation fragment was missing {org.apache.axis2.dispatchers.RequestURIBasedOperationDispatcher}
DEBUG - Axis operation is null {org.apache.axis2.json.gson.JSONMessageHandler}
DEBUG - No headers present corresponding to http://www.w3.org/2005/08/addressing {org.apache.axis2.handlers.addressing.AddressingInHandler}
DEBUG - No headers present corresponding to http://schemas.xmlsoap.org/ws/2004/08/addressing {org.apache.axis2.handlers.addressing.AddressingInHandler}
DEBUG - getAction (null) from [email protected] {org.apache.axis2.client.Options}
DEBUG - SoapAction is (null) {org.apache.axis2.context.MessageContext}
DEBUG - [MessageContext: logID=f9462531f982d008b3e2aacd88bfd07f4a7e4905c354170e] Checking for Operation using Action : null {org.apache.axis2.dispatchers.ActionBasedOperationDispatcher}
DEBUG - getAction (null) from [email protected] {org.apache.axis2.client.Options}
DEBUG - SoapAction is (null) {org.apache.axis2.context.MessageContext}
DEBUG - [MessageContext: logID=f9462531f982d008b3e2aacd88bfd07f4a7e4905c354170e] Checking for Operation using Action : null {org.apache.axis2.dispatchers.ActionBasedOperationDispatcher}
DEBUG - Get operation for request_box {org.apache.axis2.description.AxisService}
DEBUG - Found axis operation: [email protected] {org.apache.axis2.description.AxisService}
DEBUG - org.apache.axis2.i18n.resource::handleGetObject(operationfound) {org.apache.axis2.i18n.ProjectResourceBundle}
DEBUG - [MessageContext: logID=f9462531f982d008b3e2aacd88bfd07f4a7e4905c354170e] Found AxisOperation : request_box {org.apache.axis2.engine.AbstractDispatcher}
DEBUG - getAddressingRequirementParemeterValue: value: 'null' {org.apache.axis2.addressing.AddressingHelper}
DEBUG - [MessageContext: logID=f9462531f982d008b3e2aacd88bfd07f4a7e4905c354170e] isReplyRedirected: ReplyTo is null. Returning false {org.apache.axis2.addressing.AddressingHelper}
DEBUG - getAction (null) from [email protected] {org.apache.axis2.client.Options}
DEBUG - Old WSAAction is (null) {org.apache.axis2.context.MessageContext}
DEBUG - New WSAAction is (urn:request_boxResponse) {org.apache.axis2.context.MessageContext}
DEBUG - setAction Old action is (null) {org.apache.axis2.client.Options}
DEBUG - setAction New action is (urn:request_boxResponse) {org.apache.axis2.client.Options}
DEBUG - messageID is null. {org.apache.axis2.context.ConfigurationContext}
DEBUG - forceExpand: changing prefix from to {org.apache.axiom.om.impl.llom.OMSourcedElementImpl}
DEBUG - DXXATransactionManager.begin() {org.wso2.carbon.dataservices.core.description.xa.DSSXATransactionManager}
DEBUG - Creating data source connection {org.wso2.carbon.dataservices.core.description.config.SQLConfig}
ERROR - ERROR: null value in column "element_id" violates not-null constraint_ Detalhe: Failing row contains (port_num, 6, 0, null). (Sanitized) {org.wso2.carbon.dataservices.core.description.query.SQLQuery}
org.postgresql.util.PSQLException: ERROR: null value in column "element_id" violates not-null constraint
實施
這是失敗的實際請求框（一些字段內容所取代，以降低噪聲）：
{
"request_box":{
"update_project_element_operation":{
"name":"(some-text)",
"element_id":9983,
"element_uuid":"(element-uuid)",
"from_revit":1,
"project_id":22,
"parent_element_uuid":"(parent-uuid)",
"type":3,
"location_id":85,
"model":0
},
"delete_element_property_operation":{
"name":"num_ports",
"element_id":9983,
"project_id":22
},
"insert_element_property_operation":{
"project_id":22,
"element_uuid":"(element-uuid)",
"name":"num_ports",
"value":"48"
},
"insert_project_element_operation":{
"name":"(this operation disappears)",
"element_id":0,
"element_uuid":"(other-uuid)",
"from_revit":1,
"project_id":22,
"parent_element_uuid":"(element-uuid)",
"type":10,
"location_id":85,
"model":0
},
"insert_element_property_operation":{
"project_id":22,
"element_uuid":"(other-uuid)",
"name":"port_num",
"value":"6"
}
}
}
我可以提供詳細表，查詢和操作定義如有必要。所有的操作都在之前使用過，如果單獨發佈或者在兩個不同的請求框中發佈，每個操作都可以工作。這似乎是直接與DSS boxcarring相關的問題。
任何想法？