You are viewing a plain text version of this content. The canonical link for it is here.
Posted to log4cxx-user@logging.apache.org by Moshe Matitya <Mo...@Kayote.com> on 2007/06/21 19:40:29 UTC
AsyncAppender not working
I have been unable to get the AsyncAppender to work. For every appender
that is added to the AsyncAppender, the following error message appears:
No appender named [<name>] could be found.
And not surprisingly, no logging happens.
I whittled this down to a simple example using an AsyncAppender with two
attached appenders. Here is the config file:
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
<log4j:configuration xmlns:log4j='http://jakarta.apache.org/log4j/'
debug="true">
<appender name="CONSOLE"
class="org.apache.log4j.ConsoleAppender">
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern"
value="%d [%t] %-5p %c - %m%n" />
</layout>
</appender>
<appender name="FILE"
class="org.apache.log4j.FileAppender">
<param name="File" value="Sample.log" />
<param name="Append" value="false" />
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern"
value="%d [%t] %-5p %c - %m%n" />
</layout>
</appender>
<appender name="ASYNC"
class="org.apache.log4j.AsyncAppender">
<param name="LocationInfo" value="true" />
<appender-ref ref="CONSOLE" />
<appender-ref ref="FILE" />
</appender>
<root>
<level value="debug" />
<appender-ref ref="ASYNC" />
</root>
</log4j:configuration>
And here is the log4cxx debug output:
log4cxx: Threshold ="".
log4cxx: Level value for root is [debug].
log4cxx: OptionConverter::toLevel: no class name specified,
level=[debug]
log4cxx: root level set to DEBUG
log4cxx: Class name: [org.apache.log4j.AsyncAppender]
log4cxx: Setting option name=[LocationInfo], value=[true]
log4cxx: Attaching appender named [CONSOLE] to appender named
[ASYNC].
log4cxx: No appender named [CONSOLE] could be found.
log4cxx: Attaching appender named [FILE] to appender named [ASYNC].
log4cxx: No appender named [FILE] could be found.
log4cxx: Adding appender named [ASYNC] to logger [root].
When I change the root logger's appender from "ASYNC" to "CONSOLE" or
"FILE"
(i.e., bypassing the AsyncAppender), then everything works fine.
Am I doing something wrong here?
I am using log4cxx 0.10.0,
taken from <http://littletux.homelinux.org/log4cxx> on June 21.
I am running Windows XP SP2, with Visual C++ 6.0 SP6.
Thanks,
Moshe
Re: AsyncAppender not working
Posted by George Uecker <ge...@dot21rts.com>.
Moshe,
After looking a little deeper, I now recall that we did indeed have a similar problem when we first started using log4cxx. To get our configuration to work, I had to modify DOMConfigurator according to this post:
http://permalink.gmane.org/gmane.comp.apache.logging.log4cxx.devel/851
You'll want to first verify whether these mods are already in the version you're using...
HTH,
George
George Uecker wrote:
> Hi Moshe,
>
> Moshe Matitya wrote:
>
>> Hi, George.
>>
>> Thank you for responding. I appreciate your taking the time.
>>
>> I tried your config file, after commenting out the references to the
>> DDSAppender (so that it configures just one AsyncAppender, to which the
>> ConsoleAppender is attached). Unfortunately, it did not work: It, too,
>> produced the same error message ("No appender named [CONSOLE] could be
>> found"), and nothing was logged to the console.
>>
>> The following was the debug output:
>>
>> log4cxx: The "configDebug" attribute is deprecated.
>> log4cxx: Use the "internalDebug" attribute instead.
>> log4cxx: Threshold ="".
>> log4cxx: Level value for root is [debug].
>> log4cxx: OptionConverter::toLevel: no class name specified,
>> level=[debug]
>> log4cxx: root level set to DEBUG
>> log4cxx: Class name: [org.apache.log4cxx.AsyncAppender]
>> log4cxx: Attaching appender named [CONSOLE] to appender named
>> [ASYNC_CONSOLE].
>> log4cxx: No appender named [CONSOLE] could be found.
>> log4cxx: Adding appender named [ASYNC_CONSOLE] to logger [root].
>>
>> A couple of questions:
>>
>> (1) Are you by any chance using the old, deprecated version of log4cxx
>> (0.9.7)? I only began experiencing this problem with the AsyncAppender
>> when I upgraded to the latest version (0.10.0).
>>
>
> No, I'm using a snapshot of HEAD from Oct. 2006.
>
>> (2) According to the following bug description, the AsyncAppender, when
>> under load, will cause logging threads to deadlock and hang:
>>
>> [#LOGCXX-129] Asyncappender is full of race conditions (improper use
>> of condition variables) - ASF JIRA
>> http://issues.apache.org/jira/browse/LOGCXX-129
>>
>> Hve you experienced this problem? (Of course, if you are using log4cxx
>> 0.9.7, then you shouldn't have this problem either.)
>>
>
> I have not experienced this problem, but I also modified AsyncAppender
> slightly so that it does not block when its queue gets full. Instead it
> just drops any log msgs it can't handle. Log4j's AsyncAppender now has
> a configuration switch for blocking or non-blocking behavior, including
> a summary of dropped msgs for non-blocking mode, but this functionality
> has not been ported to log4cxx yet (that I know of).
>
> Thanks for bringing this bug report to my attention though...
>
> George
>
Re: AsyncAppender not working
Posted by George Uecker <ge...@dot21rts.com>.
Hi Moshe,
Moshe Matitya wrote:
> Hi, George.
>
> Thank you for responding. I appreciate your taking the time.
>
> I tried your config file, after commenting out the references to the
> DDSAppender (so that it configures just one AsyncAppender, to which the
> ConsoleAppender is attached). Unfortunately, it did not work: It, too,
> produced the same error message ("No appender named [CONSOLE] could be
> found"), and nothing was logged to the console.
>
> The following was the debug output:
>
> log4cxx: The "configDebug" attribute is deprecated.
> log4cxx: Use the "internalDebug" attribute instead.
> log4cxx: Threshold ="".
> log4cxx: Level value for root is [debug].
> log4cxx: OptionConverter::toLevel: no class name specified,
> level=[debug]
> log4cxx: root level set to DEBUG
> log4cxx: Class name: [org.apache.log4cxx.AsyncAppender]
> log4cxx: Attaching appender named [CONSOLE] to appender named
> [ASYNC_CONSOLE].
> log4cxx: No appender named [CONSOLE] could be found.
> log4cxx: Adding appender named [ASYNC_CONSOLE] to logger [root].
>
> A couple of questions:
>
> (1) Are you by any chance using the old, deprecated version of log4cxx
> (0.9.7)? I only began experiencing this problem with the AsyncAppender
> when I upgraded to the latest version (0.10.0).
>
No, I'm using a snapshot of HEAD from Oct. 2006.
> (2) According to the following bug description, the AsyncAppender, when
> under load, will cause logging threads to deadlock and hang:
>
> [#LOGCXX-129] Asyncappender is full of race conditions (improper use
> of condition variables) - ASF JIRA
> http://issues.apache.org/jira/browse/LOGCXX-129
>
> Hve you experienced this problem? (Of course, if you are using log4cxx
> 0.9.7, then you shouldn't have this problem either.)
>
I have not experienced this problem, but I also modified AsyncAppender slightly so that it does not block when its queue gets full. Instead it just drops any log msgs it can't handle. Log4j's AsyncAppender now has a configuration switch for blocking or non-blocking behavior, including a summary of dropped msgs for non-blocking mode, but this functionality has not been ported to log4cxx yet (that I know of).
Thanks for bringing this bug report to my attention though...
George
RE: AsyncAppender not working
Posted by Moshe Matitya <Mo...@Kayote.com>.
Hi, George.
Thank you for responding. I appreciate your taking the time.
I tried your config file, after commenting out the references to the
DDSAppender (so that it configures just one AsyncAppender, to which the
ConsoleAppender is attached). Unfortunately, it did not work: It, too,
produced the same error message ("No appender named [CONSOLE] could be
found"), and nothing was logged to the console.
The following was the debug output:
log4cxx: The "configDebug" attribute is deprecated.
log4cxx: Use the "internalDebug" attribute instead.
log4cxx: Threshold ="".
log4cxx: Level value for root is [debug].
log4cxx: OptionConverter::toLevel: no class name specified,
level=[debug]
log4cxx: root level set to DEBUG
log4cxx: Class name: [org.apache.log4cxx.AsyncAppender]
log4cxx: Attaching appender named [CONSOLE] to appender named
[ASYNC_CONSOLE].
log4cxx: No appender named [CONSOLE] could be found.
log4cxx: Adding appender named [ASYNC_CONSOLE] to logger [root].
A couple of questions:
(1) Are you by any chance using the old, deprecated version of log4cxx
(0.9.7)? I only began experiencing this problem with the AsyncAppender
when I upgraded to the latest version (0.10.0).
(2) According to the following bug description, the AsyncAppender, when
under load, will cause logging threads to deadlock and hang:
[#LOGCXX-129] Asyncappender is full of race conditions (improper use
of condition variables) - ASF JIRA
http://issues.apache.org/jira/browse/LOGCXX-129
Hve you experienced this problem? (Of course, if you are using log4cxx
0.9.7, then you shouldn't have this problem either.)
Thanks again,
Moshe
> -----Original Message-----
> From: George Uecker [mailto:george.uecker@dot21rts.com]
> Sent: Tuesday, June 26, 2007 4:40 PM
> To: Log4CXX User
> Subject: Re: AsyncAppender not working
>
> Moshe,
>
> Here's a copy of my config file. It configures two different
> AsyncAppenders, one for the ConsoleAppender and one for our
> custom DDSAppender. (The one shown for the FileAppender is
> commented out in the root section.) Works fine.
>
> HTH,
>
> George
>
>
> <?xml version="1.0" encoding="UTF-8"?>
> <!DOCTYPE log4cxx:configuration >
>
> <log4cxx:configuration
> xmlns:log4cxx="http://jakarta.apache.org/log4cxx/"
> configDebug="true">
>
> <appender name="ASYNC_CONSOLE"
> class="org.apache.log4cxx.AsyncAppender">
> <appender-ref ref="CONSOLE"/>
> </appender>
>
> <appender name="ASYNC_DDS"
> class="org.apache.log4cxx.AsyncAppender">
> <appender-ref ref="DDS"/>
> </appender>
>
> <!--appender name="ASYNC_FILE"
> class="org.apache.log4cxx.AsyncAppender">
> <appender-ref ref="FILE"/>
> </appender-->
>
> <appender name="CONSOLE"
> class="org.apache.log4cxx.ConsoleAppender">
> <layout class="org.apache.log4cxx.PatternLayout">
> <param name="ConversionPattern"
> value="%d %-5p [%x] %C{2} (%F:%L)
> - %m%n"/>
> </layout>
> </appender>
>
> <appender name="DDS" class="org.apache.log4cxx.DDSAppender">
> <param name="domain" value="21"/>
> <!--DDSAppender has no Layout-->
> <!--layout class="org.apache.log4cxx.PatternLayout">
> <param name="ConversionPattern"
> value="%d %-5p [%t] %C{2} (%F:%L)
> - %m%n"/>
> </layout-->
> </appender>
>
> <appender name="FILE" class="org.apache.log4cxx.FileAppender">
> <param name="File" value="tempLogFile"/>
> <layout class="org.apache.log4cxx.PatternLayout">
> <param name="ConversionPattern"
> value="%d %-5p [%t] %C{2} (%F:%L)
> - %m%n"/>
> </layout>
> </appender>
>
> <root>
> <priority value="debug"/>
> <appender-ref ref="ASYNC_CONSOLE"/>
> <appender-ref ref="ASYNC_DDS"/>
> <!--appender-ref ref="FILE"/-->
> </root>
> </log4cxx:configuration>
>
>
>
> Moshe Matitya wrote:
> > Unless I'm missing something, it appears to be impossible
> to configure
> > log4cxx to use AsyncAppender. Is there anybody out there who has
> > actually used it? If so, can you show me how your config
> file looks?
> >
> > Thanks,
> >
> > Moshe
> >
> >
> >
> >>-----Original Message-----
> >>From: Moshe Matitya [mailto:Moshe.Matitya@Kayote.com]
> >>Sent: Thursday, June 21, 2007 8:40 PM
> >>To: log4cxx-user@logging.apache.org
> >>Subject: AsyncAppender not working
> >>
> >>I have been unable to get the AsyncAppender to work. For every
> >>appender that is added to the AsyncAppender, the following error
> >>message appears:
> >>
> >> No appender named [<name>] could be found.
> >>
> >>And not surprisingly, no logging happens.
> >>
> >>I whittled this down to a simple example using an
> AsyncAppender with
> >>two attached appenders. Here is the config file:
> >>
> >> <?xml version="1.0" encoding="UTF-8" ?>
> >> <!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
> >>
> >> <log4j:configuration
> >>xmlns:log4j='http://jakarta.apache.org/log4j/'
> >> debug="true">
> >>
> >> <appender name="CONSOLE"
> >> class="org.apache.log4j.ConsoleAppender">
> >> <layout class="org.apache.log4j.PatternLayout">
> >> <param name="ConversionPattern"
> >> value="%d [%t] %-5p %c - %m%n" />
> >> </layout>
> >> </appender>
> >>
> >> <appender name="FILE"
> >> class="org.apache.log4j.FileAppender">
> >> <param name="File" value="Sample.log" />
> >> <param name="Append" value="false" />
> >> <layout class="org.apache.log4j.PatternLayout">
> >> <param name="ConversionPattern"
> >> value="%d [%t] %-5p %c - %m%n" />
> >> </layout>
> >> </appender>
> >>
> >> <appender name="ASYNC"
> >> class="org.apache.log4j.AsyncAppender">
> >> <param name="LocationInfo" value="true" />
> >> <appender-ref ref="CONSOLE" />
> >> <appender-ref ref="FILE" />
> >> </appender>
> >>
> >> <root>
> >> <level value="debug" />
> >> <appender-ref ref="ASYNC" />
> >> </root>
> >>
> >> </log4j:configuration>
> >>
> >>And here is the log4cxx debug output:
> >>
> >> log4cxx: Threshold ="".
> >> log4cxx: Level value for root is [debug].
> >> log4cxx: OptionConverter::toLevel: no class name specified,
> >>level=[debug]
> >> log4cxx: root level set to DEBUG
> >> log4cxx: Class name: [org.apache.log4j.AsyncAppender]
> >> log4cxx: Setting option name=[LocationInfo], value=[true]
> >> log4cxx: Attaching appender named [CONSOLE] to appender named
> >>[ASYNC].
> >> log4cxx: No appender named [CONSOLE] could be found.
> >> log4cxx: Attaching appender named [FILE] to appender named
> >>[ASYNC].
> >> log4cxx: No appender named [FILE] could be found.
> >> log4cxx: Adding appender named [ASYNC] to logger [root].
> >>
> >>When I change the root logger's appender from "ASYNC" to
> "CONSOLE" or
> >>"FILE"
> >>(i.e., bypassing the AsyncAppender), then everything works fine.
> >>
> >>Am I doing something wrong here?
> >>
> >>I am using log4cxx 0.10.0,
> >>taken from <http://littletux.homelinux.org/log4cxx> on June 21.
> >>I am running Windows XP SP2, with Visual C++ 6.0 SP6.
> >>
> >>Thanks,
> >>
> >>Moshe
> >
> >
> >
>
>
Re: AsyncAppender not working
Posted by George Uecker <ge...@dot21rts.com>.
Moshe,
Here's a copy of my config file. It configures two different AsyncAppenders, one for the ConsoleAppender and one for our custom DDSAppender. (The one shown for the FileAppender is commented out in the root section.) Works fine.
HTH,
George
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE log4cxx:configuration >
<log4cxx:configuration xmlns:log4cxx="http://jakarta.apache.org/log4cxx/"
configDebug="true">
<appender name="ASYNC_CONSOLE" class="org.apache.log4cxx.AsyncAppender">
<appender-ref ref="CONSOLE"/>
</appender>
<appender name="ASYNC_DDS" class="org.apache.log4cxx.AsyncAppender">
<appender-ref ref="DDS"/>
</appender>
<!--appender name="ASYNC_FILE" class="org.apache.log4cxx.AsyncAppender">
<appender-ref ref="FILE"/>
</appender-->
<appender name="CONSOLE" class="org.apache.log4cxx.ConsoleAppender">
<layout class="org.apache.log4cxx.PatternLayout">
<param name="ConversionPattern"
value="%d %-5p [%x] %C{2} (%F:%L) - %m%n"/>
</layout>
</appender>
<appender name="DDS" class="org.apache.log4cxx.DDSAppender">
<param name="domain" value="21"/>
<!--DDSAppender has no Layout-->
<!--layout class="org.apache.log4cxx.PatternLayout">
<param name="ConversionPattern"
value="%d %-5p [%t] %C{2} (%F:%L) - %m%n"/>
</layout-->
</appender>
<appender name="FILE" class="org.apache.log4cxx.FileAppender">
<param name="File" value="tempLogFile"/>
<layout class="org.apache.log4cxx.PatternLayout">
<param name="ConversionPattern"
value="%d %-5p [%t] %C{2} (%F:%L) - %m%n"/>
</layout>
</appender>
<root>
<priority value="debug"/>
<appender-ref ref="ASYNC_CONSOLE"/>
<appender-ref ref="ASYNC_DDS"/>
<!--appender-ref ref="FILE"/-->
</root>
</log4cxx:configuration>
Moshe Matitya wrote:
> Unless I'm missing something, it appears to be impossible to configure
> log4cxx to use AsyncAppender. Is there anybody out there who has
> actually used it? If so, can you show me how your config file looks?
>
> Thanks,
>
> Moshe
>
>
>
>>-----Original Message-----
>>From: Moshe Matitya [mailto:Moshe.Matitya@Kayote.com]
>>Sent: Thursday, June 21, 2007 8:40 PM
>>To: log4cxx-user@logging.apache.org
>>Subject: AsyncAppender not working
>>
>>I have been unable to get the AsyncAppender to work. For
>>every appender that is added to the AsyncAppender, the
>>following error message appears:
>>
>> No appender named [<name>] could be found.
>>
>>And not surprisingly, no logging happens.
>>
>>I whittled this down to a simple example using an
>>AsyncAppender with two attached appenders. Here is the config file:
>>
>> <?xml version="1.0" encoding="UTF-8" ?>
>> <!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
>>
>> <log4j:configuration
>>xmlns:log4j='http://jakarta.apache.org/log4j/'
>> debug="true">
>>
>> <appender name="CONSOLE"
>> class="org.apache.log4j.ConsoleAppender">
>> <layout class="org.apache.log4j.PatternLayout">
>> <param name="ConversionPattern"
>> value="%d [%t] %-5p %c - %m%n" />
>> </layout>
>> </appender>
>>
>> <appender name="FILE"
>> class="org.apache.log4j.FileAppender">
>> <param name="File" value="Sample.log" />
>> <param name="Append" value="false" />
>> <layout class="org.apache.log4j.PatternLayout">
>> <param name="ConversionPattern"
>> value="%d [%t] %-5p %c - %m%n" />
>> </layout>
>> </appender>
>>
>> <appender name="ASYNC"
>> class="org.apache.log4j.AsyncAppender">
>> <param name="LocationInfo" value="true" />
>> <appender-ref ref="CONSOLE" />
>> <appender-ref ref="FILE" />
>> </appender>
>>
>> <root>
>> <level value="debug" />
>> <appender-ref ref="ASYNC" />
>> </root>
>>
>> </log4j:configuration>
>>
>>And here is the log4cxx debug output:
>>
>> log4cxx: Threshold ="".
>> log4cxx: Level value for root is [debug].
>> log4cxx: OptionConverter::toLevel: no class name
>>specified, level=[debug]
>> log4cxx: root level set to DEBUG
>> log4cxx: Class name: [org.apache.log4j.AsyncAppender]
>> log4cxx: Setting option name=[LocationInfo], value=[true]
>> log4cxx: Attaching appender named [CONSOLE] to appender
>>named [ASYNC].
>> log4cxx: No appender named [CONSOLE] could be found.
>> log4cxx: Attaching appender named [FILE] to appender
>>named [ASYNC].
>> log4cxx: No appender named [FILE] could be found.
>> log4cxx: Adding appender named [ASYNC] to logger [root].
>>
>>When I change the root logger's appender from "ASYNC" to
>>"CONSOLE" or "FILE"
>>(i.e., bypassing the AsyncAppender), then everything works fine.
>>
>>Am I doing something wrong here?
>>
>>I am using log4cxx 0.10.0,
>>taken from <http://littletux.homelinux.org/log4cxx> on June 21.
>>I am running Windows XP SP2, with Visual C++ 6.0 SP6.
>>
>>Thanks,
>>
>>Moshe
>
>
>
RE: AsyncAppender not working
Posted by Moshe Matitya <Mo...@Kayote.com>.
Unless I'm missing something, it appears to be impossible to configure
log4cxx to use AsyncAppender. Is there anybody out there who has
actually used it? If so, can you show me how your config file looks?
Thanks,
Moshe
> -----Original Message-----
> From: Moshe Matitya [mailto:Moshe.Matitya@Kayote.com]
> Sent: Thursday, June 21, 2007 8:40 PM
> To: log4cxx-user@logging.apache.org
> Subject: AsyncAppender not working
>
> I have been unable to get the AsyncAppender to work. For
> every appender that is added to the AsyncAppender, the
> following error message appears:
>
> No appender named [<name>] could be found.
>
> And not surprisingly, no logging happens.
>
> I whittled this down to a simple example using an
> AsyncAppender with two attached appenders. Here is the config file:
>
> <?xml version="1.0" encoding="UTF-8" ?>
> <!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
>
> <log4j:configuration
> xmlns:log4j='http://jakarta.apache.org/log4j/'
> debug="true">
>
> <appender name="CONSOLE"
> class="org.apache.log4j.ConsoleAppender">
> <layout class="org.apache.log4j.PatternLayout">
> <param name="ConversionPattern"
> value="%d [%t] %-5p %c - %m%n" />
> </layout>
> </appender>
>
> <appender name="FILE"
> class="org.apache.log4j.FileAppender">
> <param name="File" value="Sample.log" />
> <param name="Append" value="false" />
> <layout class="org.apache.log4j.PatternLayout">
> <param name="ConversionPattern"
> value="%d [%t] %-5p %c - %m%n" />
> </layout>
> </appender>
>
> <appender name="ASYNC"
> class="org.apache.log4j.AsyncAppender">
> <param name="LocationInfo" value="true" />
> <appender-ref ref="CONSOLE" />
> <appender-ref ref="FILE" />
> </appender>
>
> <root>
> <level value="debug" />
> <appender-ref ref="ASYNC" />
> </root>
>
> </log4j:configuration>
>
> And here is the log4cxx debug output:
>
> log4cxx: Threshold ="".
> log4cxx: Level value for root is [debug].
> log4cxx: OptionConverter::toLevel: no class name
> specified, level=[debug]
> log4cxx: root level set to DEBUG
> log4cxx: Class name: [org.apache.log4j.AsyncAppender]
> log4cxx: Setting option name=[LocationInfo], value=[true]
> log4cxx: Attaching appender named [CONSOLE] to appender
> named [ASYNC].
> log4cxx: No appender named [CONSOLE] could be found.
> log4cxx: Attaching appender named [FILE] to appender
> named [ASYNC].
> log4cxx: No appender named [FILE] could be found.
> log4cxx: Adding appender named [ASYNC] to logger [root].
>
> When I change the root logger's appender from "ASYNC" to
> "CONSOLE" or "FILE"
> (i.e., bypassing the AsyncAppender), then everything works fine.
>
> Am I doing something wrong here?
>
> I am using log4cxx 0.10.0,
> taken from <http://littletux.homelinux.org/log4cxx> on June 21.
> I am running Windows XP SP2, with Visual C++ 6.0 SP6.
>
> Thanks,
>
> Moshe
>