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From Esther Parrilla-Endrino <eparril...@gmail.com>
Subject Re: Help needed using VFSLogFilePatternReceiver
Date Fri, 06 Nov 2009 08:42:17 GMT
OK, then I come back to httpclient 3.1.

Regarding the support of the range header how can I check if Tomcat (my http
server) supports that?

2009/11/5 Scott Deboy <scott.deboy@gmail.com>

> Apologies, I meant httpclient 3.1.
>
> Also, you do need an http server that supports the range header, as I
> mentioned previously.
>
> That should do it..
>
> I have made a lot of changes to VFSLogFilePatternReceiver since the last
> release (in svn trunk), but I think tailing was working with the release (I
> haven't tried it recently)...
>
> You could pull down the sources and build yourself, but it's a pretty
> painful process.  I know what's in svn trunk + the dependencies I mentioned
> previously do tail correctly when using http.
>
> Scott
>
>
>
> On Thu, Nov 5, 2009 at 10:16 AM, Esther Parrilla-Endrino <
> eparrillae@gmail.com> wrote:
>
> > Hi again,
> >
> > Thanks a lot for your responses Scott, browsing previous emails from you
> I
> > have managed to display the file remotely via VFS, the only thing that is
> > not working is the tailing of the file, this is my scenario:
> >
> > 1. I have a test class that saves messages every second to a log file.
> > 2. I have configured my JNLP and .chainsaw/plugins to include the
> necessary
> > jars, some of them signed and http-client and commons-codec not signed
> and
> > linked in a separate JNLP file.
> > 3. I launch Chainsaw using Java Web Start JNLP file successfully, I
> choose
> > my config file and the VFS receiver is created at the right and the
> > chainsaw-log tab show the first 274 messages saved in the remote log
> file,
> > so Chainsaw can connect and display the remote file!!!
> >
> > OK, that is great but now comes the problem, after the message number 274
> > in
> > my chainsaw.-log tab I see the following DEBUG messages:
> >
> >
> > Resorting to protocol version default close connection policy
> > Should NOT close connection, using HTTP/1.1
> > Releasing connection back to connection manager.
> > Freeing connection, hostConfig=HostConfiguration[host=http://myhost:8080
> ]
> > Adding connection at: 1257444005417
> > Notifying no-one, there are no waiting threads
> >
> > And that's all, no new messages are appended to the display :-(
> >
> > What does it means? Why Chainsaw has stopped to show messages and do not
> > tail the file?
> >
> > The only thing I have found different from the configuration proposed by
> > you
> > in previous messages of this list is that I am using
> > commons-httpclient-3.1.jar instead of version 1.3 you proposed.
> >
> > I have tried to download version 1.3 from Apache site but I could not
> find
> > it as the oldest version of this jar file placed there is version 2.0.
> >
> > Do you know if I could download that jar file from any other location?
> >
> > Thanks a lot for your help!
> >
> >
> >
> >
> > 2009/10/20 Scott Deboy <scott.deboy@gmail.com>
> >
> > > To use VFS via Web Start, you need to add the vfs-related jars to your
> > > $user/.chainsaw/plugins folder, and then go to Chainsaw's
> > application-wide
> > > preferences screen and check 'ok to remove security manager'.  After
> > > restarting Chainsaw, everything should work (again, to tail http using
> > VFS
> > > receiver I also had to download Jakarta commons-codec and Jakarta
> > > httpclient
> > > 1.3.
> > >
> > > Here's a page with more information:
> > > http://logging.apache.org/chainsaw/distributionnotes.html
> > >
> > > Hope that helps.
> > >
> > > Scott
> > > On Tue, Oct 20, 2009 at 3:24 AM, Esther Parrilla-Endrino <
> > > eparrillae@gmail.com> wrote:
> > >
> > > > Hi Scott,
> > > >
> > > > Thanks for your responses, well I have  tried several things and
> still
> > it
> > > > is
> > > > not working properly :/
> > > >
> > > > The latest thing I have tried is that I have placed all Chainsaw
> signed
> > > > jars
> > > > and JNLP in a static folder of my Tomcat 6.0 java server, here is my
> > > JNLP:
> > > >
> > > > <?xml version="1.0" encoding="utf-8"?>
> > > > <!-- JNLP File for Jakarta Log4j Chainsaw v2 Application -->
> > > > <jnlp
> > > >  spec="1.0+"
> > > > codebase="http://myHost:8080/chainsaw/"
> > > >  href="chainsawWebStart.jnlp">
> > > >  <information>
> > > >    <title>Chainsaw Log Console</title>
> > > >    <vendor>Apache</vendor>
> > > >    <homepage href="http://logging.apache.org/log4j"/>
> > > >    <description>A Log4j log viewing application</description>
> > > >    <description kind="short">A Log4j log viewing
> > > application</description>
> > > >    <icon href="http://logging.apache.org/log4j/docs/images/logo.jpg
> "/>
> > > >    <icon kind="splash" href="
> > > > http://logging.apache.org/log4j/docs/images/logo.jpg"/>
> > > >    <offline-allowed/>
> > > >  </information>
> > > >  <security>
> > > >      <all-permissions/>
> > > >  </security>
> > > >  <resources>
> > > >    <j2se version="1.5+" max-heap-size="256m"/>
> > > >    <jar href="lib/log4j-chainsaw-2.0alpha-1.jar"/>
> > > >    <jar href="lib/jakarta-oro-2.0.6.jar"/>
> > > >    <jar href="lib/log4j-1.3alpha-7.jar"/>
> > > >    <jar href="lib/log4j-optional-1.3alpha-7.jar"/>
> > > >    <jar href="lib/log4j-oro-1.3alpha-7.jar"/>
> > > >    <jar href="lib/log4j-smtp-1.3alpha-7.jar"/>
> > > >    <jar href="lib/log4j-xml-1.3alpha-7.jar"/>
> > > >    <!--<jar href="lib/log4j-zeroconf.jar"/>-->
> > > >    <jar href="lib/xstream-1.1.2.jar"/>
> > > >    <jar href="lib/commons-vfs-1.0.jar"/>
> > > >    <jar href="lib/commons-logging-api.jar"/>
> > > >    <!--<jar href="lib/jmdns.jar"/>-->
> > > >    <jar href="lib/log4j-chainsaw-vfs.jar"/>
> > > >    <jar href="lib/log4j-db-1.3alpha-7.jar"/>
> > > >    <jar href="lib/log4j-jms-1.3alpha-7.jar"/>
> > > >    <property name="org.apache.commons.logging.Log"
> > > > value="org.apache.commons.logging.impl.Log4JLogger"/>
> > > >  </resources>
> > > >  <application-desc main-class="org.apache.log4j.chainsaw.LogUI"/>
> > > > </jnlp>
> > > >
> > > > I can succesfully launch Chainsaw using Java Web Start, then I select
> > to
> > > > load my config file which is the following one:
> > > >
> > > > <?xml version="1.0" encoding="UTF-8" ?>
> > > > <!DOCTYPE log4j:configuration >
> > > > <log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/"
> > > > debug="true">
> > > >
> > > >   <!-- REMOTE FILE RECEIVER -->
> > > >   <plugin name="VFSLogFilePatternReceiver"
> > > > class="org.apache.log4j.chainsaw.vfs.VFSLogFilePatternReceiver">
> > > >     <param name="fileURL" value="
> > > > http://myHost:8080/chainsaw/logs/example.log"/>
> > > >      <param name="timestampFormat" value="yyyy-MM-dd HH:mm:ss,SSS"/>
> > > >     <param name="logFormat" value="TIMESTAMP LEVEL [LOGGER]
> MESSAGE"/>
> > > >      <param name="name" value="MyHttpReceiver"/>
> > > >      <param name="promptForUserInfo" value="false"/>
> > > >     <param name="tailing" value="true"/>
> > > >   </plugin>
> > > >   <root>
> > > >      <level value="DEBUG"/>
> > > >   </root>
> > > >
> > > >   <logger name="org.apache.log4j">
> > > >      <level value="OFF"/>
> > > >   </logger>
> > > >
> > > > </log4j:configuration>
> > > >
> > > > The idea would be:
> > > >
> > > > 1. Launch Chainsaw remotely using Java Web Start (OK)
> > > > 2. Load the config file above that created an VFS receiver to
> retrieve
> > > the
> > > > file example.log file via HTTP GET. This file is placed too in the
> same
> > > > Tomcat static folder.
> > > > 3. Display the file and tail its contents.
> > > >
> > > > The problem is that once I load the config file I can see the new
> > > Receiver
> > > > at the right and in the chainsaw-log tab appears the message at the
> > end:
> > > >
> > > > "VFSLogFilePatternReceiver started!"
> > > >
> > > > But I see no new tab for the log messages and the remote log file is
> > not
> > > > loaded.
> > > >
> > > > What else do I have to configure?
> > > > To get remote files via HTTP GET using VFS do I have to place them in
> > > > Apache
> > > > Httpd? Tomcat do not  allow this retrieval?
> > > >
> > > > Any help wpuld be appreciatted, the Tool really covers what we need
> for
> > > > logging and is a shame maybe we cannot use it due to some
> > > misconfiguration
> > > > in our side :-(
> > > >
> > > >
> > > >
> > > > 2009/10/16 Scott Deboy <scott.deboy@gmail.com>
> > > >
> > > > > I'm able to tail a log file via http with nginx-0.7.62, so I
> suspect
> > > > > support
> > > > > for range header is the issue (or you're using an old version of
> > > > > VFSLogFilePatternReceiver, haven't tried the 'currently released'
> > > version
> > > > > in
> > > > > a while).
> > > > >
> > > > > Scott
> > > > >
> > > > > On Fri, Oct 16, 2009 at 12:15 AM, Scott Deboy <
> scott.deboy@gmail.com
> > >
> > > > > wrote:
> > > > >
> > > > > > For me to tail http content using VFSLogFilePatternReceiver,
I
> had
> > to
> > > > > pull
> > > > > > down an older version of httpclient (1.3) and commons-codec
> (since
> > > > > > commons-vfs uses apis from httpclient 1.3).
> > > > > >
> > > > > > VFS uses the 'range' header to request specific bytes (tail
the
> > > file),
> > > > so
> > > > > > maybe your web server doesn't support that header (that's what
> I'm
> > > > seeing
> > > > > > with nanoHTTPD).  I'll try with a different server that does
> > support
> > > > that
> > > > > > header just to make sure everything's working..
> > > > > >
> > > > > > Scott
> > > > > >
> > > > > >
> > > > > > On Thu, Oct 15, 2009 at 7:00 AM, Esther Parrilla-Endrino <
> > > > > > eparrillae@gmail.com> wrote:
> > > > > >
> > > > > >> Hi folks!
> > > > > >>
> > > > > >> I would like to read, display and do a near-real-time tail
of a
> > > remote
> > > > > log
> > > > > >> file stored in a Tomcat server using Chainsaw (the files
shall
> be
> > > > > >> retrieved
> > > > > >> using HTTP GET).
> > > > > >>
> > > > > >> I have been able to configure the VFSLogFilePatternReceiver
,
> > > install
> > > > > all
> > > > > >> 3rd party libraries etc... and once I launch Chainsaw I
can see
> > the
> > > > new
> > > > > >> receiver tab and the first bunch of messages of my remote
log
> file
> > > but
> > > > > >> even
> > > > > >> though I have set the "tailing" flag to "true" the file
is not
> > > > > refreshed.
> > > > > >>
> > > > > >> The last messages I have in my display are:
> > > > > >>
> > > > > >> Releasing connection back to connection manager
> > > > > >> Freeing connection, hostConfig=HostConfiguration[host=
> > > > > >> http://remotehost:8080
> > > > > >> ]
> > > > > >> Adding connection at: 12556119101
> > > > > >> Notifying no-one, there are no waiting threads
> > > > > >>
> > > > > >> My configuration file is the following one:
> > > > > >>
> > > > > >> <?xml version="1.0" encoding="UTF-8" ?>
> > > > > >> <!DOCTYPE log4j:configuration >
> > > > > >> <log4j:configuration xmlns:log4j="
> > http://jakarta.apache.org/log4j/"
> > > > > >> debug="true">
> > > > > >>
> > > > > >>   <!-- REMOTE FILE RECEIVER -->
> > > > > >>   <plugin name="VFSLogFilePatternReceiver"
> > > > > >> class="org.apache.log4j.chainsaw.vfs.VFSLogFilePatternReceiver">
> > > > > >>     <param name="fileURL" value="
> > http://remotehost:8080/logs/my.log
> > > > "/>
> > > > > >>     <param name="timestampFormat" value="yyyy-MM-dd
> > HH:mm:ss,SSS"/>
> > > > > >>     <param name="logFormat" value="TIMESTAMP LEVEL [LOGGER]
> > > MESSAGE"/>
> > > > > >>     <!--<param name="logFormat" value="TIMESTAMP [THREAD]
LEVEL
> > > LOGGER
> > > > > >> (FILE:LINE) - MESSAGE"/>-->
> > > > > >>     <param name="name" value="ExampleHttpReceiver"/>
> > > > > >>     <param name="promptForUserInfo" value="false"/>
> > > > > >>     <param name="tailing" value="true"/>
> > > > > >>   </plugin>
> > > > > >>   <root>
> > > > > >>      <level value="DEBUG"/>
> > > > > >>   </root>
> > > > > >>   <logger name="org.apache.log4j">
> > > > > >>      <level value="OFF"/>
> > > > > >>   </logger>
> > > > > >> </log4j:configuration>
> > > > > >>
> > > > > >> I have the following jar files in my "$HOME/.chainsaw/plugins/"
> > > > folder:
> > > > > >>
> > > > > >> commons-logging-1.1.1.jar
> > > > > >> commons-vfs-1.0.jar
> > > > > >> log4j-chainsaw-vfs.jar
> > > > > >>
> > > > > >> Is there anything else I have missed in my installation?
> > > > > >> Does VFS support HTTP GET remote files retrieval with
> refreshing?
> > > > > >>
> > > > > >> Thanks in advance,
> > > > > >>
> > > > > >> e
> > > > > >>
> > > > > >
> > > > > >
> > > > >
> > > >
> > > >
> > > >
> > > > --
> > > > Because code matters more than commercials...
> > > >
> > >
> >
> >
> >
> > --
> > Because code matters more than commercials...
> >
>



-- 
Because code matters more than commercials...

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