WSO2 EI 6.1.1 -每个API调试级别日志语句放在调用中介之后，在相关的日志文件中找不到

Question

我需要记录特定API的调试级别。我对样例API:http://localhost:8280/test001使用单独的日志文件。对于这个需求，我使用了每个API log4j属性(参考：https://docs.wso2.com/display/ESB490/Per-API+Logs+in+WSO2+ESB)。问题:无法在文件中找到放置在调用中介器之后的调试级别日志。

我的API :test.xml

<?xml version="1.0" encoding="UTF-8"?><api context="/test001" name="test" xmlns="http://ws.apache.org/ns/synapse">
<resource methods="GET"><inSequence>
       <log category="DEBUG" level="custom">
            <property name="DEBUG category" value="DEBUG LOG BEFORE CALL MEDIATOR"/>
        </log>

        <call>
            <endpoint>
                <http method="get" uri-template="http://localhost:8280/sample001"/>
            </endpoint>
        </call>
        <log category="DEBUG" level="custom">
            <property name="DEBUG category" value="DEBUG LOG AFTER CALL MEDIATOR"/>
        </log>
        <log level="custom">
            <property name="INFO  category" value="INFO LOG AFTER CALL MEDIATOR"/>
        </log>
        <payloadFactory media-type="xml">
            <format>
                <test>SUCCESS</test>
            </format>
            <args/>
        </payloadFactory>
        <loopback description="loop backing to out-sequence"/>
    </inSequence>
    <outSequence>
        <log category="DEBUG" level="custom">
            <property name="DEBUG category" value=" DBUG OUT SEQUENCE"/>
        </log>
        <log level="custom">
            <property name="INFO category" value="INFO OUT SEUENCE"/>
        </log>
        <send/>
    </outSequence>
    <faultSequence>
        <log category="DEBUG" level="custom">
            <property name="log DEBUG" value=" DBUG FAULT SEQUENCE"/>
        </log>
        <log level="custom">
            <property name="log DEBUG" value="INFO FAULT SEUENCE"/>
        </log>
    </faultSequence></resource></api>

我的log4j配置wso2ei-6.1.1\conf\log4j.properties：

log4j.category.API_LOGGER.test =DEBUG,COMMON_API_APPENDER
log4j.appender.test.Append = true

log4j.appender.COMMON_API_APPENDER=org.apache.log4j.DailyRollingFileAppender
log4j.appender.COMMON_API_APPENDER.File=${carbon.home}/repository/logs/commonApi.log
log4j.appender.COMMON_API_APPENDER.datePattern='.'yyyy-MM-dd
log4j.appender.COMMON_API_APPENDER.layout=org.apache.log4j.PatternLayout
log4j.appender.COMMON_API_APPENDER.layout.ConversionPattern=%d{ISO8601} [%X{ip}-%X{host}] [%t] %5p %c{1} %m%n

注意：其他属性在log4j.properties文件中没有更改

commonApi.log:

2017-11-21 19:42:06,502 [-] [localhost-startStop-1]  INFO test Initializing API: test
2017-11-21 19:43:21,703 [-] [PassThroughMessageProcessor-1] DEBUG test DEBUG category = DEBUG LOG BEFORE CALL MEDIATOR
2017-11-21 19:43:22,021 [-] [PassThroughMessageProcessor-3] DEBUG test DEBUG category =  DBUG OUT SEQUENCE
2017-11-21 19:43:22,021 [-] [PassThroughMessageProcessor-3]  INFO test INFO category = INFO OUT SEUENCE

正如您在API代码中所看到的，日志行：

DEBUG category = DEBUG LOG AFTER CALL MEDIATOR

在commonApi.log文件中丢失。

wso2carbon.log：

TID: [-1234] [] [2017-11-21 19:43:21,703] DEBUG {API_LOGGER.test} -  DEBUG category = DEBUG LOG BEFORE CALL MEDIATOR {API_LOGGER.test}
TID: [-1234] [] [2017-11-21 19:43:21,711]  INFO {org.apache.synapse.core.axis2.TimeoutHandler} -  This engine will expire all callbacks after GLOBAL_TIMEOUT: 120 seconds, irrespective of the timeout action, after the specified or optional timeout {org.apache.synapse.core.axis2.TimeoutHandler}
TID: [-1234] [] [2017-11-21 19:43:22,004]  INFO {org.apache.synapse.mediators.builtin.LogMediator} -  To: /sample001, MessageID: urn:uuid:c7c63feb-9c3f-46f7-b3cb-9a9d0b4fb82e, Direction: request, Envelope: <?xml version='1.0' encoding='utf-8'?><soapenv:Envelope xmlns:soapenv="http://www.w3.org/2003/05/soap-envelope"><soapenv:Body/></soapenv:Envelope> {org.apache.synapse.mediators.builtin.LogMediator}
TID: [-1234] [] [2017-11-21 19:43:22,019]  INFO {org.apache.synapse.mediators.builtin.LogMediator} -  INFO  category = INFO LOG AFTER CALL MEDIATOR {org.apache.synapse.mediators.builtin.LogMediator}
TID: [-1234] [] [2017-11-21 19:43:22,021] DEBUG {API_LOGGER.test} -  DEBUG category =  DBUG OUT SEQUENCE {API_LOGGER.test}
TID: [-1234] [] [2017-11-21 19:43:22,021]  INFO {org.apache.synapse.mediators.builtin.LogMediator} -  INFO category = INFO OUT SEUENCE {org.apache.synapse.mediators.builtin.LogMediator}
TID: [-1234] [] [2017-11-21 19:43:22,021]  INFO {API_LOGGER.test} -  INFO category = INFO OUT SEUENCE {API_LOGGER.test}

但是您可以看到信息日志行：

INFO  category = INFO LOG AFTER CALL MEDIATOR

在wso2carbon.log文件中(这保证了调用中介后的执行)。

注:然而，我可以保证如下：：

• 在调用中介程序执行后编写的中介流。(我可以在控制台中看到信息日志。)
• 调用中介成功响应值。
• 没有API中的调用中介，所有调试日志行都在commonApi.log文件中。
• 文件中有不连续的调试日志。(按预期工作)

提前谢谢！

Answer 1

是否确定需要在非阻塞模式下使用调用中介(默认情况下调用中介是非阻塞的)？如果您将模式更改为如下所示的阻塞模式，则代码可以工作。

<call blocking="true">

或者您可以使用默认阻塞的<callout>中介来获得相同的结果。

由于信息日志工作正常，我认为这可能是WSO2 IE6中的一个Bug。