配置 IBM Process Federation Server 来为您的 IBM BPM 流程用户提供单点访问(8)

可启动的实体提供可由当前登录的用户启动的进程、服务和任务的联合列表。返回每个可启动项的属性，这些属性依赖于联合的 IBM BPM系统类型。属性中包括一个表示运行该实体的系统的系统 ID。响应数据中的 federationResult部分包含一个针对每个系统 ID 的条目，该条目表示使用该系统时要使用的 URL。

示例 URL：

https://PFSIHS.cn.ibm.com/rest/bpm/federated/v1/launchableEntities

示例响应：

 {"federationResult": 
 [{"statusCode":200,"id":"bpm170","indexRefreshInterval":1000,"taskCom 
 pletionUrlPrefix":"https://BPM856IHS.cn.ibm.com/teamworks","restUrlPr 
 efix":"https://BPM856IHS.cn.ibm.com/rest/bpm/wle","systemType":"SYSTE 
 M_TYPE_WLE","indexName":"bpm170","systemID":"e2021188-db69-46e3-9f24- 
 30c5e2ffb3db","version":"8.5.6.0"}, 
 {"statusCode":200,"id":"bpm37","indexRefreshInterval":1000,"taskCompl 
 etionUrlPrefix":"https://BPM8013IHS.cn.ibm.com/teamworks","restUrlPre 
 fix":"https://BPM8013IHS.cn.ibm.com/rest/bpm/wle","systemType":"SYSTE 
 M_TYPE_WLE","indexName":"bpm37","systemID":"4998fd69-9e05-45c5-930e- 
 ceb1829a6cf8","version":"8.0.1.3"}],"items": 
 [{"snapshotID":"2064.95c9fb3c-e4a2-48af- 
 91df-dbcda7a90a17","itemID":"1.36bdcc65-8d6a-4635-85cf- 
 57cab68a7e45","systemType":"SYSTEM_TYPE_WLE","processAppName":"Proces 
 s Portal","isMobileReady":false,"launchableEntityType":"SERVICE","snaps 
 hotCreatedOn":"2015-01-28T04:29:34Z","display":"Process 
 Diagram","type":"service","startURL":"https://WIN2008R2X64RU.c 
 n.ibm.com/teamworks/executecf?modelID=1.36bdcc65-8d6a-4635-85cf- 
 57cab68a7e45&branchID=2063.34a0ce6e-631b-465d-b0dc- 
 414c39fb893f","tip":true,"processAppID":"2066.23d3ecec-6fdb-4033- 
 9c57-e931aa13761f","branchID":"2063.34a0ce6e-631b-465d-b0dc- 
 414c39fb893f","isDefault":false,"snapshotName":"8.5.6.0","subtype":"u 
 rl","itemReference":"/1.36bdcc65-8d6a-4635-85cf- 
 57cab68a7e45","ID":"2015.18","branchName":"Main","systemID":"e2021188 
 -db69-46e3-9f24-30c5e2ffb3db","processAppAcronym":"TWP"}, 
 {"snapshotID":"2064.5327bc35-5faa-4052-9317- 
 d2a4b6e96a28","itemID":"25.c904b3b1-afc1-4698-bf5a- 
 a20892c20275","systemType":"SYSTEM_TYPE_WLE","processAppName":"Hiring 
 Sample","isMobileReady":false,"launchableEntityType":"PROCESS","snaps 
 hotCreatedOn":"2014-11-27T16:19:33Z","display":"Standard HR Open New 
 Position","type":"process","startURL":"https://WIN2008R2X64RU.cn.ibm 
 .com/rest/bpm/wle/v1/process?action=start&bpdId=25.c904b3b1-afc1-4698- 
 bf5a-a20892c20275&branchId=2063.1a52abd6-b068-4f9e-91a9- 
 ded9793eb34e","tip":true,"processAppID":"2066.9ab0d0c6-d92c-4355-9ed5-d8a05 
 acdb0","branchID":"2063.1a52abd6-b068-4f9e-91a9-ded9793eb34e","isDefault"
 :false,"snapshotName":"Standard Hiring Sample v8560","itemReference":"/25.c 
 904b3b1-afc1-4698-bf5a-a20892c20275","ID":"2015.37","branchName":"Main","sys 
 temID":"e2021188-db69-46e3-9f24-30c5e2ffb3db","processAppAcronym":"HSS"}, 
 {"snapshotID":"2064.b2076323-2a32-49a1-9e6f-570c3bf28935","itemID":"1.2a8bb2d0- 
 5038-43be-b17e-31a192f8847c","systemType":"SYSTEM_TYPE_WLE","processAppName":"T 
 estApp","isMobileReady":false,"launchableEntityType":"SERVICE","snapshotCreat 
 edOn":"2015-03-03T09:53:08Z","display":"HS_Service","type":"service","startURL"
 :"https://HollyIHS1.cn.ibm.com/teamworks/executeServiceByName? 
 processApp=TEST1&serviceName=HS_Service&snapshot=ServiceExpose_1","ti 
 p":false,"processAppID":"2066.5b5acd2d-0374-4a0a-b405- 
 50a14e2a8e7c","branchID":"2063.c2536580-fe7c-4feb-946e- 
 7078301b8608","isDefault":true,"snapshotName":"ServiceExpose_1","subt 
 ype":"startable_service","itemReference":"/1.2a8bb2d0-5038-43be-b17e- 
 31a192f8847c","ID":"2015.109","branchName":"ServiceExpose_1","systemI 
 D":"4998fd69-9e05-45c5-930e- 
 ceb1829a6cf8","processAppAcronym":"TEST1"}, 
 {"snapshotID":"2064.a4b8b434-29d2-4bd7-92ea- 
 7f3e30630b06","itemID":"1.04c8755c-b4fb-4f53-b0bc- 
 c0816add8a02","systemType":"SYSTEM_TYPE_WLE","processAppName":"HollyT 
 est1","isMobileReady":false,"launchableEntityType":"SERVICE","snapsho 
 tCreatedOn":"2015-01- 
 29T02:50:34Z","display":"HT11","type":"service","startURL":"https://W 
 IN2008R2X64RU.cn.ibm.com/teamworks/executeServiceByName? 
 processApp=HT1&serviceName=HT11&snapshot=V11","
 tip":false,"processAppID":"2066.c7603da0-1c6e-402f-b631- 
 f54326c18ea5","branchID":"2063.60f8fbee-1282-4283-acd5- 
 4fa76f39a339","isDefault":false,"snapshotName":"V11","subtype":"star 
 table_service","itemReference":"/1.04c8755c-b4fb-4f53-b0bc- 
 c0816add8a02","ID":"2015.163","branchName":"Main","systemID":"e2021188- 
 db69-46e3-9f24-30c5e2ffb3db","processAppAcronym":"HT1"} , 
 {"snapshotID":"2064.fe64ffd7-eaf6-4671-8b40-ac57241bb4d3","itemID"
 :"25.ddd4df2a-09b7-4ab0-87f4-eede42a1f8","systemType":"SYSTEM_TYPE_ 
 WLE","processAppName":"FailSysTask","isMobileReady":false,"launchableEnt 
 ityType":"PROCESS","snapshotCreatedOn":"2015-03-07T08:34:47Z","display"
 :"FST","type":"process","startURL":"https://HollyIHS1.cn.ibm.com/rest/bp 
 m/wle/v1/process?action=start&bpdId=25.ddd4df2a-09b7-4ab0-87f4- 
 eede42a1f8&snapshotId=2064.fe64ffd7-eaf6-4671-8b40-ac57241bb4d3","ti 
 p":false,"processAppID":"2066.00dfe332-f13a-46e2-b9e8-b81546a0f0e4","branchI 
 D":"2063.24932202-8f85-4e8b-9215-6892f3be29cc","isDefault":false,"snapsho 
 tName":"failedSysLinkProcess","itemReference":"/25.ddd4df2a-09b7-4ab0-87f4- 
 eede42a1f8","ID":"2015.113","branchName":"failedSysLinkProcess","systemI 
 D":"4998fd69-9e05-45c5-930e-ceb1829a6cf8","processAppAcronym":"FST"}]}

tomcat6通过自己内部实现的java日志记录器来记录操作相关的日志ibm portal 单点登录，此文件即为日志记录器相关的配置信息，可以用来定义日志记录的组件级别以及日志文件的存在位置等。在bgrewriteaof过程中，所有新来的写入请求依然会被写入旧的aof文件，同时放到aof buffer中，当rewrite完成后，会在主线程把这部分内容合并到临时文件中之后才rename成新的aof文件，所以rewrite过程中会不断打印"background aof buffer size: 80 mb， background aof buffer size: 180 mb"，要监控这部分的日志。在主控服务器上，所有对文件目录操作的关键步骤（具体文件内容所处的数据服务器，是不会被写入日志的，因为这些内容是动态建立的...），都会被写入日志。

要使用为您的 Process Federation Server 设置的跟踪信息，可以完成以下步骤：

在 Process Federation Server 上，编辑pfs_install_root/usr/servers/server1/server.xml配置文件。

展开您想要跟踪的每个组件的 traceSpecification属性。查看下面这个示例：

 <logging consoleLogLevel="INFO" traceFormat="ENHANCED"
 traceSpecification="*=info:com.ibm.bpm.federated.*=all " />

请参阅 IBM 知识中心上的 IBM BPM 文档，了解 Process Federation Server 的故障排除细节。

请参阅下表，了解其他故障排除细节：

问题可能的原因行动计划

无法访问 Process Federation Server REST API

很有可能是因为LDAP 未正确配置。

检查 messages.log。

REST API 响应中的系统状态、任务和启动列表信息不正确。

SSO 或 SSL未正确配置，所以无法连接目标 IBM BPM。

启用以下轨迹：com.ibm.bpm.federated.rest.query.*=all:com.ibm.bpm.federated.config.*=all: com.ibm.bpm.federated.retriever.*=all

Process Federation Server 集群未正常运行

ProcessFederation Server 集群未正确配置或未正常运行。

启用以下轨迹：com.ibm.wbimonitor.partitioning.*=all

新任务未建立索引

Process Federation Server 任务和进程索引器未正常运行。

启用以下轨迹：com.ibm.bpm.federated.indexer.*=all

在本教程中，您通过一个详细示例，学习了如何安装和配置 Process Federation Server 来访问两个后端 IBM BPM系统。害学习了整体拓扑结构和如何配置您的环境。现在，您可以将所学的知识应用到自己的 IBM BPM 环境中。

感谢 Wu Mi Zhong 的评审和评价。

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