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Tempo研究之FDS

WorkflowDAOSOAPXMLlog4j 
阅读更多
 Tempo FDS是什么组件，就不多解释了，参考我的 Tempo针对BPEL4People的实现构架 这篇blog即可。

在往下说之前，有必要阐述两个FDS内部的概念：User Process 和Workflow Process。User Process其实代表是bpel engine所处理的process，而Workflow Process则代表Tempo这边所关注的people task的处理。——这两个概念刚开始时令人混淆的，至少我在一开始跟踪代码的时候是理解反了。

当Intialo BPM engine（内部apache ode bpel engine）在启动一个process的时候，如果碰到一个People Activity，则会向Tempo FDS发送一个create task的请求（UP-->WP）。当Task执行人完成task，并提交的时候，FDS向User Process发出notifyTaskCompletion请求（WP-->UP）。这中间tempo内部各个组件之间的调用关系和执行顺序，可以参考http://www.intalio.org/confluence/display/TEMPO/Creating+and+Completing+a+Task 这上面的详细内容。

在FDS内部的实现逻辑大约是这个样子的：


FDS来回所对应的都是http请求和响应，所以消息都是由FormDispatcherServlet这个serlvet接收并处理的。

如果FDS接收的请求url是以 /fds/workflow/ib4p结尾的，则表示是WP-->UP的过程；否则是UP-->WP的过程。

建议在 Intalio\Server\var\log目录下的 server-log4j.properties（这是一个log4j的配置文件）中，增加对 org.intalio.tempo包结构的DEBUG日志信息输出，可以在 D:\Intalio\Server\var\log\geronimo.log 跟踪输出，这样可以查看来回的request/response message的xml消息格式，以及详细的处理过程。

Tempo FDS本身内部实现并不是很复杂，逻辑比较简单，主要是消息的来回转换。

一下是一个complete task处理的后台日志，方便看看具体的实现逻辑：
19:52:45,937 DEBUG [org.intalio.tempo.workflow.wds.servlets.WDSServlet] [SocketListener2-22] doGet request=org.mortbay.jetty.servlet.JSR154Filter$Request@10057d3
19:52:45,937 DEBUG [org.intalio.tempo.workflow.wds.servlets.WDSServlet] [SocketListener2-22] Resource URI: 'PeopleActivity/PA.xform.xsd'
19:52:45,937 DEBUG [org.intalio.tempo.workflow.wds.servlets.WDSServlet] [SocketListener2-22] Participant token: ''
19:52:45,937 DEBUG [org.intalio.tempo.workflow.wds.servlets.WDSServlet] [SocketListener2-22] Retrieving the item.
19:52:45,937 DEBUG [org.intalio.tempo.workflow.wds.servlets.WDSServlet] [SocketListener2-22] Sending the data..
19:52:45,937 DEBUG [org.intalio.tempo.workflow.wds.servlets.WDSServlet] [SocketListener2-22] Item retrieved & sent OK.
19:52:46,828 DEBUG [org.intalio.tempo.workflow.auth.n3.N3AuthProvider] [SocketListener2-19] Token 'VE9LRU4mJnVzZXI9PWludGFsaW9cYWRtaW4mJmlzc3VlZD09MTE5NTY0MzM1MTczNCYmcm9sZXM9PWludGFsaW9ccHJvY2Vzc2FkbWluaXN0cmF0b3IsZXhhbXBsZXNcZW1wbG95ZWUsaW50YWxpb1xwcm9jZXNzbWFuYWdlcixleGFtcGxlc1xtYW5hZ2VyJiZmdWxsTmFtZT09QWRtaW5pbmlzdHJhdG9yJiZlbWFpbD09YWRtaW5AZXhhbXBsZS5jb20mJm5vbmNlPT0tMzU0NDYwNjI1MzA3NTkxMzMwMyYmdGltZXN0YW1wPT0xMTk1NjQzMzUxNzM0JiZkaWdlc3Q9PW92OXlVbUNyTGgvcXZQajdNdXZDZkNWMU9DTT0mJiYmVE9LRU4=' is resolved to [Lorg.intalio.tempo.security.Property;@fae917
19:52:46,828 DEBUG [org.intalio.tempo.workflow.auth.n3.N3AuthProvider] [SocketListener2-19] User intalioadmin with roles intalioprocessadministrator,examplesemployee,intalioprocessmanager,examplesmanager
19:52:46,828 DEBUG [org.intalio.tempo.workflow.tms.server.dao.JDBCTaskDAOConnectionFactory] [SocketListener2-19] Getting connection to TMS DB
19:52:46,828 DEBUG [org.intalio.tempo.workflow.tms.server.dao.JDBCTaskDAOConnection] [SocketListener2-19] About to retrieve Workflow Task with ID 1228262541d53628:-5bad7914:11661f87cf4:-7fab192.168.67.2403670017
19:52:46,843 DEBUG [org.intalio.tempo.workflow.tms.server.dao.JDBCTaskDAOConnection] [SocketListener2-19] Workflow Task 1228262541d53628:-5bad7914:11661f87cf4:-7fab192.168.67.2403670017 has been read from TMS DB
19:52:46,843 DEBUG [org.intalio.tempo.workflow.tms.server.dao.JDBCTaskDAOConnection] [SocketListener2-19] About to retrieve user owners for task 1228262541d53628:-5bad7914:11661f87cf4:-7fab192.168.67.2403670017
19:52:46,843 DEBUG [org.intalio.tempo.workflow.tms.server.dao.JDBCTaskDAOConnection] [SocketListener2-19] User Owner : intalioadmin
19:52:46,843 DEBUG [org.intalio.tempo.workflow.tms.server.dao.JDBCTaskDAOConnection] [SocketListener2-19] About to retrieve role owners for task 1228262541d53628:-5bad7914:11661f87cf4:-7fab192.168.67.2403670017
19:52:46,843 DEBUG [org.intalio.tempo.workflow.tms.server.dao.JDBCTaskDAOConnection] [SocketListener2-19] About to retrieve attachments for task 1228262541d53628:-5bad7914:11661f87cf4:-7fab192.168.67.2403670017
19:52:46,843 DEBUG [org.intalio.tempo.workflow.auth.BaseRestrictedEntity] [SocketListener2-19] isAvailableTo credentials: UserRoles{user=intalioadmin,roles=[intalioprocessadministrator, examplesemployee, intalioprocessmanager, examplesmanager]}
19:52:46,843 DEBUG [org.intalio.tempo.workflow.auth.BaseRestrictedEntity] [SocketListener2-19] isAvailableTo users: [intalioadmin]
19:52:46,843 DEBUG [org.intalio.tempo.workflow.auth.BaseRestrictedEntity] [SocketListener2-19] isAvailableTo roles: []
19:52:46,843 DEBUG [org.intalio.tempo.workflow.tms.server.dao.JDBCTaskDAOConnection] [SocketListener2-19] Attempt to delete Workflow Task 1228262541d53628:-5bad7914:11661f87cf4:-7fab192.168.67.2403670017
19:52:46,875 DEBUG [org.intalio.tempo.workflow.tms.server.dao.JDBCTaskDAOConnection] [SocketListener2-19] XML parsed to string :
<?xml version="1.0" encoding="UTF-8"?><axis2ns3:input xmlns="http://example.com/PA/xform" xmlns:axis2ns3="http://example.com/PA/xform">
      <username>
      </username>
    </axis2ns3:input>
19:52:46,875 DEBUG [org.intalio.tempo.workflow.tms.server.dao.JDBCTaskDAOConnection] [SocketListener2-19] XML parsed to string :
<?xml version="1.0" encoding="UTF-8"?><axis2ns4:output xmlns="http://example.com/PA/xform" xmlns:axis2ns4="http://example.com/PA/xform" xmlns:fe="http://example.com/PA/xform" participantToken="VE9LRU4mJnVzZXI9PWludGFsaW9cYWRtaW4mJmlzc3VlZD09MTE5NTY0MzM1MTczNCYmcm9sZXM9PWludGFsaW9ccHJvY2Vzc2FkbWluaXN0cmF0b3IsZXhhbXBsZXNcZW1wbG95ZWUsaW50YWxpb1xwcm9jZXNzbWFuYWdlcixleGFtcGxlc1xtYW5hZ2VyJiZmdWxsTmFtZT09QWRtaW5pbmlzdHJhdG9yJiZlbWFpbD09YWRtaW5AZXhhbXBsZS5jb20mJm5vbmNlPT0tMzU0NDYwNjI1MzA3NTkxMzMwMyYmdGltZXN0YW1wPT0xMTk1NjQzMzUxNzM0JiZkaWdlc3Q9PW92OXlVbUNyTGgvcXZQajdNdXZDZkNWMU9DTT0mJiYmVE9LRU4=" taskId="1228262541d53628:-5bad7914:11661f87cf4:-7fab192.168.67.2403670017" user="intalioadmin"><username>w1</username></axis2ns4:output>
19:52:46,875 DEBUG [org.intalio.tempo.workflow.tms.server.dao.JDBCTaskDAOConnection] [SocketListener2-19] Workflow PA Task 1228262541d53628:-5bad7914:11661f87cf4:-7fab192.168.67.2403670017 is about to be registered in TMS DB
19:52:46,875 DEBUG [org.intalio.tempo.workflow.tms.server.dao.JDBCTaskDAOConnection] [SocketListener2-19] Workflow PA Task 1228262541d53628:-5bad7914:11661f87cf4:-7fab192.168.67.2403670017 registered with ID=17
19:52:46,890 DEBUG [org.intalio.tempo.workflow.tms.server.dao.JDBCTaskDAOConnection] [SocketListener2-19]  and User Owner : intalioadmin
19:52:46,921 DEBUG [org.intalio.tempo.workflow.tms.server.dao.JDBCTaskDAOConnection] [SocketListener2-19] committed
19:52:46,921 DEBUG [org.intalio.tempo.workflow.tms.server.TMSServer] [SocketListener2-19] intalioadmin has set output and completed Workflow Task Workflow Task 1228262541d53628:-5bad7914:11661f87cf4:-7fab192.168.67.2403670017
19:52:46,921 DEBUG [org.intalio.tempo.workflow.tms.server.dao.JDBCTaskDAOConnection] [SocketListener2-19] Closed connection
19:52:47,421 DEBUG [org.intalio.tempo.workflow.fds.FormDispatcherServlet] [SocketListener2-19] Request URI: /ib4p
19:52:47,421 DEBUG [org.intalio.tempo.workflow.fds.FormDispatcherServlet] [SocketListener2-19] SOAPAction: "notifyTaskCompletion"
19:52:47,671 INFO  [org.intalio.tempo.workflow.fds.FormDispatcherServlet] [SocketListener2-19] Workflow Processes -> User Process
19:52:47,671 DEBUG [org.intalio.tempo.workflow.fds.FormDispatcherServlet] [SocketListener2-19] Parsing the request from the Workflow Processes.
19:52:47,687 DEBUG [org.intalio.tempo.workflow.fds.FormDispatcherServlet] [SocketListener2-19] Workflow process request:
<?xml version="1.0"?>
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"><soapenv:Header><addr:To xmlns:addr="http://www.w3.org/2005/08/addressing">http://localhost:8080/fds/workflow/ib4p</addr:To><addr:Action xmlns:addr="http://www.w3.org/2005/08/addressing">notifyTaskCompletion</addr:Action><intalio:session xmlns:intalio="http://www.intalio.com/type/session">573e4478-0f4e-4251-9d45-f870dadf4e80-2</intalio:session><intalio:callback xmlns:intalio="http://www.intalio.com/type/session"><addr:Address xmlns:addr="http://www.w3.org/2005/08/addressing">http://localhost:8080/ode/processes/workflow/ib4p</addr:Address><intalio:session>573e4478-0f4e-4251-9d45-f870dadf4e80-3</intalio:session></intalio:callback></soapenv:Header><soapenv:Body><axis2ns5:notifyTaskCompletionRequest xmlns="http://www.intalio.com/bpms/workflow/ib4p_20051115" xmlns:axis2ns5="http://www.intalio.com/bpms/workflow/ib4p_20051115" xmlns:b4p="http://www.intalio.com/bpms/workflow/ib4p_20051115">
                                                <b4p:taskMetaData>
                                                    <taskId>1228262541d53628:-5bad7914:11661f87cf4:-7fab192.168.67.2403670017</taskId>
                                                    <processId>
    </processId>
                                                    <userProcessEndpoint>http://localhost:8080/ode/processes/PeopleActivity/PA/PA/User/WFmagic_EDLpiJdCEdy9R-hEBkLEtg</userProcessEndpoint>
                                                    <userProcessNamespaceURI>http://example.com/PA/xform</userProcessNamespaceURI>
                                                    <userProcessCompleteSOAPAction>http://example.com/PA/xform/Process/notifyTaskCompletion</userProcessCompleteSOAPAction>
                                                    <session>573e4478-0f4e-4251-9d45-f870dadf4e80-2</session>
                                                </b4p:taskMetaData>
                                                <taskOutput><axis2ns6:output xmlns="http://example.com/PA/xform" xmlns:axis2ns6="http://example.com/PA/xform" xmlns:fe="http://example.com/PA/xform" participantToken="VE9LRU4mJnVzZXI9PWludGFsaW9cYWRtaW4mJmlzc3VlZD09MTE5NTY0MzM1MTczNCYmcm9sZXM9PWludGFsaW9ccHJvY2Vzc2FkbWluaXN0cmF0b3IsZXhhbXBsZXNcZW1wbG95ZWUsaW50YWxpb1xwcm9jZXNzbWFuYWdlcixleGFtcGxlc1xtYW5hZ2VyJiZmdWxsTmFtZT09QWRtaW5pbmlzdHJhdG9yJiZlbWFpbD09YWRtaW5AZXhhbXBsZS5jb20mJm5vbmNlPT0tMzU0NDYwNjI1MzA3NTkxMzMwMyYmdGltZXN0YW1wPT0xMTk1NjQzMzUxNzM0JiZkaWdlc3Q9PW92OXlVbUNyTGgvcXZQajdNdXZDZkNWMU9DTT0mJiYmVE9LRU4=" taskId="1228262541d53628:-5bad7914:11661f87cf4:-7fab192.168.67.2403670017" user="intalioadmin"><username>w1</username></axis2ns6:output></taskOutput>
                                                <b4p:status>
                                                    OK
                                                </b4p:status>
                                            </axis2ns5:notifyTaskCompletionRequest></soapenv:Body></soapenv:Envelope>


19:52:47,687 DEBUG [org.intalio.tempo.workflow.fds.FormDispatcherServlet] [SocketListener2-19] Converting the request to the user process format.
19:52:47,718 DEBUG [org.intalio.tempo.workflow.fds.FormDispatcherServlet] [SocketListener2-19] Workflow process request (after conversion):
<?xml version="1.0"?>
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"><soapenv:Header><addr:To xmlns:addr="http://www.w3.org/2005/08/addressing">http://localhost:8080/ode/processes/PeopleActivity/PA/PA/User/WFmagic_EDLpiJdCEdy9R-hEBkLEtg</addr:To><addr:Action xmlns:addr="http://www.w3.org/2005/08/addressing">http://example.com/PA/xform/Process/notifyTaskCompletion</addr:Action><intalio:session xmlns:intalio="http://www.intalio.com/type/session">573e4478-0f4e-4251-9d45-f870dadf4e80-2</intalio:session><session xmlns="http://www.intalio.com/type/session">573e4478-0f4e-4251-9d45-f870dadf4e80-2</session></soapenv:Header><soapenv:Body><userProcess:notifyTaskCompletionRequest xmlns="http://www.intalio.com/bpms/workflow/ib4p_20051115" xmlns:b4p="http://www.intalio.com/bpms/workflow/ib4p_20051115" xmlns:userProcess="http://example.com/PA/xform">
                                                <userProcess:taskMetaData>
                                                    <userProcess:taskId>1228262541d53628:-5bad7914:11661f87cf4:-7fab192.168.67.2403670017</userProcess:taskId>
                                                    <userProcess:processId>
    </userProcess:processId>
                                                    <userProcess:userProcessEndpoint>http://localhost:8080/ode/processes/PeopleActivity/PA/PA/User/WFmagic_EDLpiJdCEdy9R-hEBkLEtg</userProcess:userProcessEndpoint>
                                                    <userProcess:userProcessNamespaceURI>http://example.com/PA/xform</userProcess:userProcessNamespaceURI>
                                                    <userProcess:userProcessCompleteSOAPAction>http://example.com/PA/xform/Process/notifyTaskCompletion</userProcess:userProcessCompleteSOAPAction>
                                                    <userProcess:session>573e4478-0f4e-4251-9d45-f870dadf4e80-2</userProcess:session>
                                                </userProcess:taskMetaData>
                                                <userProcess:taskOutput><axis2ns6:output xmlns="http://example.com/PA/xform" xmlns:axis2ns6="http://example.com/PA/xform" xmlns:fe="http://example.com/PA/xform" participantToken="VE9LRU4mJnVzZXI9PWludGFsaW9cYWRtaW4mJmlzc3VlZD09MTE5NTY0MzM1MTczNCYmcm9sZXM9PWludGFsaW9ccHJvY2Vzc2FkbWluaXN0cmF0b3IsZXhhbXBsZXNcZW1wbG95ZWUsaW50YWxpb1xwcm9jZXNzbWFuYWdlcixleGFtcGxlc1xtYW5hZ2VyJiZmdWxsTmFtZT09QWRtaW5pbmlzdHJhdG9yJiZlbWFpbD09YWRtaW5AZXhhbXBsZS5jb20mJm5vbmNlPT0tMzU0NDYwNjI1MzA3NTkxMzMwMyYmdGltZXN0YW1wPT0xMTk1NjQzMzUxNzM0JiZkaWdlc3Q9PW92OXlVbUNyTGgvcXZQajdNdXZDZkNWMU9DTT0mJiYmVE9LRU4=" taskId="1228262541d53628:-5bad7914:11661f87cf4:-7fab192.168.67.2403670017" user="intalioadmin"><username>w1</username></axis2ns6:output></userProcess:taskOutput>
                                                <userProcess:status>
                                                    OK
                                                </userProcess:status>
                                            </userProcess:notifyTaskCompletionRequest></soapenv:Body></soapenv:Envelope>


19:52:47,718 DEBUG [org.intalio.tempo.workflow.fds.FormDispatcherServlet] [SocketListener2-19] Completion SOAP Action: 'http://example.com/PA/xform/Process/notifyTaskCompletion'
19:52:47,718 DEBUG [org.intalio.tempo.workflow.fds.FormDispatcherServlet] [SocketListener2-19] Sending the request to the user process and getting the response
19:52:48,921 DEBUG [org.intalio.tempo.workflow.fds.FormDispatcherServlet] [SocketListener2-19] User process response:
<?xml version="1.0"?>
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"><soapenv:Body><axis2ns7:response xmlns="http://example.com/PA/xform" xmlns:axis2ns7="http://example.com/PA/xform" xmlns:xform="http://example.com/PA/xform">
  <xform:isChainedAfter>
  </xform:isChainedAfter>
  <xform:taskMetaData>
    <xform:taskId>
    </xform:taskId>
    <xform:taskState>
    </xform:taskState>
    <xform:taskType>
    </xform:taskType>
    <xform:description>
    </xform:description>
    <xform:processId>
    </xform:processId>
    <xform:creationDate>
    </xform:creationDate>
    <xform:userOwner>
    </xform:userOwner>
    <xform:roleOwner>
    </xform:roleOwner>
    <xform:claimAction>
      <xform:user>
      </xform:user>
      <xform:role>
      </xform:role>
    </xform:claimAction>
    <xform:revokeAction>
      <xform:user>
      </xform:user>
      <xform:role>
      </xform:role>
    </xform:revokeAction>
    <xform:saveAction>
      <xform:user>
      </xform:user>
      <xform:role>
      </xform:role>
    </xform:saveAction>
    <xform:completeAction>
      <xform:user>
      </xform:user>
      <xform:role>
      </xform:role>
    </xform:completeAction>
    <xform:formUrl>
    </xform:formUrl>
    <xform:failureCode>
    </xform:failureCode>
    <xform:failureReason>
    </xform:failureReason>
    <xform:userProcessCompleteSOAPAction>
    </xform:userProcessCompleteSOAPAction>
    <xform:isChainedBefore>
    </xform:isChainedBefore>
    <xform:previousTaskId>
    </xform:previousTaskId>
    <xform:userProcessEndpoint>
    </xform:userProcessEndpoint>
    <xform:userProcessNamespaceURI>
    </xform:userProcessNamespaceURI>
  </xform:taskMetaData>
  <xform:status>OK</xform:status>
  <xform:errorCode>
  </xform:errorCode>
  <xform:errorReason>
  </xform:errorReason>
</axis2ns7:response></soapenv:Body></soapenv:Envelope>


19:52:48,921 DEBUG [org.intalio.tempo.workflow.fds.FormDispatcherServlet] [SocketListener2-19] Converting the response to the Workflow Processes format.
19:52:48,921 DEBUG [org.intalio.tempo.workflow.fds.core.UserProcessMessageConvertor] [SocketListener2-19] Converted SOAP Action: null
19:52:48,921 DEBUG [org.intalio.tempo.workflow.fds.core.UserProcessMessageConvertor] [SocketListener2-19] Did not find addr:To in SOAP header
19:52:48,921 DEBUG [org.intalio.tempo.workflow.fds.core.UserProcessMessageConvertor] [SocketListener2-19] Did not find intalio:callback/addr:Address in SOAP header
19:52:48,937 DEBUG [org.intalio.tempo.workflow.fds.FormDispatcherServlet] [SocketListener2-19] Sending the converted response back to the Workflow Processes.
19:52:48,937 DEBUG [org.intalio.tempo.workflow.fds.FormDispatcherServlet] [SocketListener2-19] User process response (after conversion)
<?xml version="1.0"?>
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"><soapenv:Body><ib4p:response xmlns="http://example.com/PA/xform" xmlns:ib4p="http://www.intalio.com/bpms/workflow/ib4p_20051115" xmlns:xform="http://example.com/PA/xform">
  <ib4p:isChainedAfter>
  </ib4p:isChainedAfter>
  <ib4p:taskMetaData>
    <ib4p:taskId>
    </ib4p:taskId>
    <ib4p:taskState>
    </ib4p:taskState>
    <ib4p:taskType>
    </ib4p:taskType>
    <ib4p:description>
    </ib4p:description>
    <ib4p:processId>
    </ib4p:processId>
    <ib4p:creationDate>
    </ib4p:creationDate>
    <ib4p:userOwner>
    </ib4p:userOwner>
    <ib4p:roleOwner>
    </ib4p:roleOwner>
    <ib4p:claimAction>
      <ib4p:user>
      </ib4p:user>
      <ib4p:role>
      </ib4p:role>
    </ib4p:claimAction>
    <ib4p:revokeAction>
      <ib4p:user>
      </ib4p:user>
      <ib4p:role>
      </ib4p:role>
    </ib4p:revokeAction>
    <ib4p:saveAction>
      <ib4p:user>
      </ib4p:user>
      <ib4p:role>
      </ib4p:role>
    </ib4p:saveAction>
    <ib4p:completeAction>
      <ib4p:user>
      </ib4p:user>
      <ib4p:role>
      </ib4p:role>
    </ib4p:completeAction>
    <ib4p:formUrl>
    </ib4p:formUrl>
    <ib4p:failureCode>
    </ib4p:failureCode>
    <ib4p:failureReason>
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