Re: More helpful reporting of exceptions in JSPs
Tim Fennell wrote: I've posted my patch for Jasper/Tomcat at the following location: http://www.tfenne.com/jasper/ The page has a brief overview, a download link and "before and after" screenshots so you can get an idea for what exactly the patch does before you decide to patch your own environment. If you give it a shot and have any problems and/or suggestions for improving it please let me know - but please read the readme first ;) Excellent addition. Maybe once you have got an initial around of feedback for users of the latest 5.0.x and 5.5.x you might like to post it up on Tomcat Bugzilla http://issues.apache.org/bugzilla/enter_bug.cgi?product=Tomcat%205 and attach the patch. Darryl - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: serving content from outside the context
John Laughton wrote: Hi, I hope this is the right mailing list for this question I am using tomcat 5.0.28 I have a simple web app and want to serve up some images in the jsp pages, but the images are outside the context The HTTP statement looks like The web app is under /usr/local/tomcat/webapp/family On the browser it only shows "thumb image" as it cannot get to the hyperlink http://xx.xx.xx.xx/data/webData/family/DSC01183.JPG (IP shown as xx.xx.xx.xx for security) I have read a lot about tomcat and figure there must be a way to configure server.xml and/or web.xml to allow this to work, but cannot see it ? It is possible ? Are you wanting TC to serve the static files or do you use AJP connector and Apache. The easiest way to serve files from outside is to let Apache serve them and configure up AJP connector, then mount the entire content or just *.jsp pages to TC. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Database connections aren't being released...
Richard Road Runner wrote: I am not sure that this is a Tomcat issue, but we are not sure what exactly is causing our problem. We are running Tomcat 5.0.27. We are using the most recent jconn2.jar driver to connect to a Sybase SQL Anywhere Studio 7 database via JDBC. Over a period of time, the number of connections to the database continues to increase far beyond the possible number of users. The only way to close the connections is to restart the database server. Are you using DBCP ? I have an issue with 5.5.9 and DBCP shipped with it I found 2 weeks ago. I would describe my problem as DBCP is not "reusing database connections when it should" but it instead creates a new one, until the SQL server has too many connections (or your DBCP hits upper parameter limits). With TC and MySQL I can confirm this by logging my database handle close and watching what happens with "SHOW PROCESSLIST" sql command on the server. Each request needs 1 database connection and the logging should confirm it returns (releases) the connection back to DBCP pool. I have followed this path with the debugger and got inside DBCP to prove the release takes place. I had put down the problem and just configured up my DBCP parameters to expire old connections as fast as possible and up the maximum limits. This wont work for me in production, maybe I switch to C3P0 connection pooling at that time. Its just so difficult to help out and nail the problem with TCs refactored and repackaged DBCP, I would very much appreciate an SDK version of the full TC package that includes all source in the JARs. I am doing a CVS build.xml now, but I think this will be for 5.5.12, I just need to work out how to fix the version for a 5.5.9 release and compare the two trees to maybe try and nail this one, or at least confirm the blame here is with DBCP. -- Darryl L. Miles - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: cannot setup JNDI with MySQL
"localhost" has special meaning to the MySQL command line tool, this uses the Unix Domain socket for transport, like /tmp/mysql.sock this does not work with Java I don't believe there is any API to access Unix Domain sockets. Confirm: mysql -h localhost -u username -ppassword database AND mysql -h 127.0.0.1 -u username -ppassword database both work.. the first uses Unix Domain sockets the 2nd TCPIP socket, same as the Java JDBC driver uses. Maybe "netstat -ton | grep 3306" can help you find where MySQL is connected with TCPIP. If you can't find it you need to look at my.cnf from mysql's var direction, maybe /opt/mysql/var/my.cnf and check you DONT have "skip-networking" set. Then check for "port=" and "bind=" values if its running on the non-standard settings than INADDR_ANY:3306. My question, in my (5.5.9) $CATALINE_HOME/common/lib I have: commons-el.jar jasper-compiler.jar jasper-compiler-jdt.jar jasper-runtime.jar jsp-api.jar mysql-connector-java-3.1.10-bin.jar naming-factory-dbcp.jar naming-factory.jar naming-resources.jar servlet-api.jar But you also have: commons-collections-3.1.jar commons-dbcp-1.2.1.jar commons-pool-1.2.jar I am having problems with "naming-factory-dbcp.jar" I'm not sure which base version it is for a start and it does not seem to re-use the connections in the pool. Is it possible to override the version shipped with TC adding a few files and changing the class path in the to the official Apache one ? Do you know which version of DBCP is shipped with TC 5.5.9 ? Thanks Darryl -- Darryl L. Miles - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Tracking Datasource Connection Usage?
Rob Hills wrote:
I started getting exceptions saying no connections were available on my JDBC
datasource (org.gjt.mm.mysql.Driver). The pool was definitely large enough
to handle the load. So it appears that I'm not freeing the all the
connections as I should. I noticed that I did not have the
'removeAbandoned' flag set on the Resource tag. Changing that has
apparently fixed the out of connections problem. But I really want to clean
up the code and fix it the right way. I've got the close() statements in
place. But obviously, I'm missing some of them somewhere. Is there any
process for logging/tracking allocating and freeing connections (and absence
thereof.), available connections, etc? Or are there any methods I can call
to give me this type of debug info? What's the recommended way to debug
this?
There have already been useful tips on debugging, but I've found that
the most common way to chew up connections is to not put the code
that frees the conneciton inside a finally {} block. If you don't free the
connection in a finally {} block, it may not be freed if an exception
occurs.
My understanding of finally is that it's ALWAYS executed, (even if
something in any block (try or catch) does a return statement). So I
would say "finally" is good practice to close both Statement handles and
Database Connection handles. My first mistakes were in not closing
statement handles this leaves resources open on handles that affect how
the database connection can be reclaimed. I was used to closing the
database connection and expecting the open statement or resultset to be
mopped up right away. But if you think about it for a moment these
resources might also be open on the SQL server through the connection
and the GC takes a while to reclaim.
try {
// code 1
} catch(FooException e) {
// code 2
} finally {
// code 3
}
// code 4
No exception execution is: code1 + code3 + code4 + end_of_func
Caught FooException: code1 + code2 + code3 + return
Uncaught Exception: code1 + code3 (thrown to callee)
This is confirmed in my Just Java 2 (6th Edn) page 215.
On another matter I am using Apache DBCP and am finding that it does not
seem to use the pooled connections, it always created a new connection
to the MySQL server, even if there are a number of already existing free
connection. I am using a JNDI binding so the auth credentials should be
working. I am still in development with the application.
I too had to add extra flags in to get a stage connection pooler but
believe there is something broken in DBCP that stops is re-using
connections like it should. This has simply covered over the problem.
Maybe we can get together and compare notes, any ideas how to enable
verbose logging of DBCP so I can confirm the application is doing what
it should ?
I am using Hibernate3 have confirmed everytime that my servlet filter is
closing the session and thus returning the connection back to DBCP like
it should, the connection from MySQL "SHOW PROCESSLIST" are still
connected and thus in the pool. But the next servlet request always
opens a new connection, when I dont think it should, it should use the
one already in the pool.
Darryl
--
Darryl L. Miles
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
DBCP problems with Hibernate
Jason Bell wrote (under Re: Source code for naming-factory-dbcp.jar ?): naming-factory-dbcp.jar Have a look at Commons DBCP. http://jakarta.apache.org/commons/dbcp/ Hope this helps. Yes thanks. I've a problem, that with Hibernate 3.0.5 and TC 5.5.9 using DBCP I am quickly seeing exhaustion of connections. With the default settings I can see 4 active connections with "SHOW PROCESSLIST" under MySQL. I've managed to trace the code path from Hibernate during close of handle back into TCs DBCP code, so the close is being called. How do you go about enabling DEBUG / TRACE output of DBCP under TC ? Does anybody know of a TC 5.5.9 distibution in SDK form, that is with source and class files in the jars to help debugging this sort of problem, I've attempted to rename and attach source files in Eclipse to see whats going on but have found the line numbers out of sync. How do you find out exactly which version of DBCP TC ships with ? FYI my META-INF/context.xml: Thanks Darryl -- Darryl L. Miles - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: where to place the /META-INF/context.xml file?
Ben Wong wrote: "A /META-INF/context.xml file can be used to define Tomcat specific configuration..." MyWebApp/META-INF/context.xml or inside your MyWebApp.war as: META-INF/context.xml -- Darryl L. Miles - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Tomcat/JVM hangs in session.getAttribute / HashMap.get()
It seems possible to be that one user simply pressing the reload button a few times quickly while the same page is not yet loaded can cause sync problems to his own session; and you can't control the user. Err... does anybody have a replacement class for HttpServlet ? A simple access wrapper class would only protect co-operative users of it, a replacement for HttpServlet would protect all users and persist across requests. It seems like the general case needs to use one, while only performance optimized case would be able to make do with the current one. While I agree developers should have access to low level classes to get raw performance, I don't agree that the normal case should expose such a basic design error. HTTP is designed to specifically allow simultaneous requests to be processed at the same time. With a replacement class for HttpServlet you'd be better of using a ReadWriteLock to protect access, which allows for threading of the common read access case. Tut, tut. Arup Vidyerthy wrote: I have been watching this thread with interest. Does this mean that all session.setAttribute() and session.getAttribute() should always be synchronised (for instance, inside a servlet or struts action) provided the same hashmap is accessed by say more than one servlet/struts action? -- Darryl L. Miles - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Source code for naming-factory-dbcp.jar ?
Where is the source code that makes up the JAR naming-factory-dbcp.jar it does not appear to be inside: jakarta-tomcat-5.5.9-src.tar.gz -- Darryl L. Miles - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Pre-compiled JSPs?
What you see looks like normal jasper name mangling of generated pages. You use: http://myserver:8080/RichardsApp/DoSomething.jsp I presume there is also a generated mapping entry, that you may have overlooked: RichardsApp.DoSomething_jsp /DoSomething.jsp Richard Burman wrote: Hi Nicolas, Thanks for your reply, I really appreciate your help. I'm not sure I fully understand your solution. I see now that the webXmlFragment provides a convenient way to generate the XML needed for the Servlets but that have bizarre names. Let's say I have a jsp: /RichardsApp/DoSomething.jsp Running Jasper at it provides a java file: /RichardsApp/DoSomething_jsp.java Then the Servlet definition would be: RichardsApp.DoSomething_jsp RichardsApp.DoSomething_jsp The way to reference my JSP used to be: http://myserver:8080/RichardsApp/DoSomething.jsp What would the new reference be? http://myserver:8080/RichardsApp/DoSomething_jsp or http://myserver:8080/RichardsApp/DoSomething Have I missed something obvious? Thanks for your help! Richard. -- Darryl L. Miles - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Do URL query strings with semi-colons work with TC ?
http://ppewww.ph.gla.ac.uk/~flavell/www/formgetbyurl.html Not sure what authorative basis this has, but it did turn up from NCSA based CGI specifications of yesteryear. Maybe the MIME specification for application/x-www-form-urlencoded wherever that is (cant find it either). It must be noted that a URL like this is valid syntax: http://www.mydomain.com/pathseg1;foo=bar/pathseg2;foo=bar2/pathseg3;foo=bar3;foo=bar33?query=value How the receiving HTTP server interprets the path is unspecified, and I don't think its mandatory for a HTTP server to support path params at any level. Since JSESSIONID is being used I would say that only the last path parameters should be picked up and made available to the target servlet and an error given out to path params no part of the last segment (so no one tries to use them, leaving the door open for their implementation later in a server that would support some usage), that make these path params eligable for pickup: foo=bar3 foo=bar33 As for precedence / override with tranditional query strings, i.e. should the namespaces be collsapse. sigh another issue to head scratch. Darryl Jon Wingfield wrote: Aye. It just states for that, amongst others, amphersand and semi-colon are reserved characters within the query string. This got me looking coz I assumed that the structure of the http get query string was defined somewhere in rfc rather than just a convention. I found a few resources saying it was recommended to support ";" as a delimiter; http://www.w3.org/TR/1999/REC-html401-19991224/appendix/notes.html#h-B.2.2 But I also found the likely candidate in TC that does the parsing of the query string: http://cvs.apache.org/viewcvs.cgi/jakarta-tomcat-connectors/util/java/org/apache/tomcat/util/http/Parameters.java?rev=1.15&view=markup Just for my peace of mind does anyone know where the "standard" use of amphersand to delimit name-value pairs in a http get query string is defined? Jon Darryl L. Miles wrote: http://www.faqs.org/rfcs/rfc2396.html section 3.3 seems to be the best reference so far. This RFC only specifies correct URI syntax, it does not mandate how that URI is used under any scheme (like "http:") is to be used. Darryl L. Miles wrote: The reference you cite http://www.faqs.org/rfcs/rfc2616.html (el al) maybe you could also cite the section I should look at. A simple search for "param" or "semi" yeilds no related results. I have spent an hour looking into the issue over the weekend and found the specification that covers the URI scheme for "http:" from this angle it seems to leave the part after the ? to denote the start of a query string vague. Which lead me to a presumption that it was HTTP server dependant on its interpretation, since for example the CGI.pm modules changed over from & to ; as the standard param delimiter with generated URLs, providing the resulting URL talks back to itself (the CGI.pm module) all will be well in the world but if it links to a TC server then there would appear to be a problem. -- Darryl L. Miles - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Do URL query strings with semi-colons work with TC ?
http://www.faqs.org/rfcs/rfc2396.html section 3.3 seems to be the best reference so far. This RFC only specifies correct URI syntax, it does not mandate how that URI is used under any scheme (like "http:") is to be used. Darryl L. Miles wrote: The reference you cite http://www.faqs.org/rfcs/rfc2616.html (el al) maybe you could also cite the section I should look at. A simple search for "param" or "semi" yeilds no related results. I have spent an hour looking into the issue over the weekend and found the specification that covers the URI scheme for "http:" from this angle it seems to leave the part after the ? to denote the start of a query string vague. Which lead me to a presumption that it was HTTP server dependant on its interpretation, since for example the CGI.pm modules changed over from & to ; as the standard param delimiter with generated URLs, providing the resulting URL talks back to itself (the CGI.pm module) all will be well in the world but if it links to a TC server then there would appear to be a problem. -- Darryl L. Miles - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Do URL query strings with semi-colons work with TC ?
I'm not trying to encode semi-colon into QS. I'm trying to use
semi-colon as a replacement for & or rather & when correctly encoded
into a HTML document. On the basis that it makes the documents smaller
and the code easier to write. I have been left with the impression they
are directly substitutable from various references around the internet.
But your comments imply otherwise.
I'd be happy to lookup "path params" in the same way I do for query
string params with a call:
value = request.getPathParameter(name);
Can I do this ?
Conceptually what is the difference between "path params" and "query
string params" ?
I'd need to better understand when QS params should be used and path
params can be used, with relation to cachability properties of the
resulting resource, i.e. the external impact of resources using &
verses ;
The reference you cite http://www.faqs.org/rfcs/rfc2616.html (el al)
maybe you could also cite the section I should look at. A simple search
for "param" or "semi" yeilds no related results. I have spent an hour
looking into the issue over the weekend and found the specification that
covers the URI scheme for "http:" from this angle it seems to leave the
part after the ? to denote the start of a query string vague. Which
lead me to a presumption that it was HTTP server dependant on its
interpretation, since for example the CGI.pm modules changed over from &
to ; as the standard param delimiter with generated URLs, providing the
resulting URL talks back to itself (the CGI.pm module) all will be well
in the world but if it links to a TC server then there would appear to
be a problem.
Thanks for your response.
Jon Wingfield wrote:
In a URL the semi-colon indicates the start of path parameters (as
opposed to the normal query parameters) as defined in rfc2616 (HTTP1.1
spec) et al.
Thus, you can't tell tomcat to use it as a query string delimiter.
JSESSIONID is a well known path parameter for Servlet 2.2+ Containers.
To use a semi-colon within a url you'll need to url encode it as %3B
To use it in the way you want you'll have to encode and parse the
query string yourself.
HTH,
Jon
Darryl L. Miles wrote:
I swear I had application code working that was using semi-colons to
delimit query string parameters. I'm sure I've also seen TC append a
";JSESSIONID=" at the end of the URL.
But my own application code written like:
String val = request.getParameters("name");
Yeilds: val="value;name2=foobar";
Is there an additional option to allow semi-colon usage, instead of
& ?
Running TC 5.5.9
Thanks.
---------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
.
--
Darryl L. Miles
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
Do URL query strings with semi-colons work with TC ?
I swear I had application code working that was using semi-colons to
delimit query string parameters. I'm sure I've also seen TC append a
";JSESSIONID=" at the end of the URL.
But my own application code written like:
String val = request.getParameters("name");
Yeilds: val="value;name2=foobar";
Is there an additional option to allow semi-colon usage, instead of & ?
Running TC 5.5.9
Thanks.
--
Darryl L. Miles
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
request.getServletPath() changes during request lifecycle, BUG or Specified behaviour ?
At the start of my HttpServlet class code:
request.getServletPath() = "/myServlet"
But then my HttpServlet code runs a MVC pattern and decides to forward
off to a JSP page "/someDir/myPage.jsp" so inside any tag's inside that
JSP page now get:
request.getServletPath() = "/someDir/myPage.jsp"
Which is just plain wrong. Can anyone confirm if this correct behaviour ?
It seems pretty ludicrious that the request object is meant to be
associated with the original request, so I would expect it to remain
constant (unless my app overides it), like how we got here is pretty
important stuff throughout the whole lifetime of a request.
The forwarding methodology JSP uses seems to be more related to the
response part, as-in the path "/someDir/myPage.jsp" is a forwarding
action that is being carried out in the response part.
To work around this sillyness:
I have added code into my HttpServlet like
'request.setAttribute("getHttpRequestPath", request.getServletPath())'
so that the original HttpRequest information can be preserved throughout
the whole request lifecycle.
--
Darryl L. Miles
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
Markup Character Entities attr="<&">" BUG ?
The following example JSP page seems to be interpreted incorrectly. <%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <%@ taglib prefix="g" uri="http://domain.com/taglibs/generic-0.1"; %> TAG GENERIC PAGE attrFour="<&">"/>< <Tag Here logged calls to setDymanicAttribute() showing the 3 arguments passed. DEBUG 10:22:40,279 (GenericTag.java:setDynamicAttribute:47) -null attrOne 1 DEBUG 10:22:40,285 (GenericTag.java:setDynamicAttribute:47) -null attrTwo 2 DEBUG 10:22:40,287 (GenericTag.java:setDynamicAttribute:47) -null attrThree <&"> DEBUG 10:22:40,298 (GenericTag.java:setDynamicAttribute:47) -null attrFour <&"> It seems the " is correctly converted into " but other character entities are not. It is my understanding that all markup file parsing should follow through the order of: * characterize file from its encoding type (UTF-8, etc...) * tokenize character stream looking for character entities and substitute what they represent (no matter where they are in the file), any substituted character may not be used as tokens that delimit markup elements in the next step * now parse the markup in the resulting file For performance reasons it probably doesn't happen exactly like that. I am expecting output like: null attrThree <&"> null attrFour <&"> I also notice that it seems common place to use JSP tags like this: " width="10"/> Is the above recursivly reliable like this: "/>"/> I appreciate the former maybe done as lazy short hand, but it appears to break something else which is a stronger binding standard. There must be many possible alternative approaches in JSP to this problem that won't conflict with other elements of all the standards that come info play. Is it possible to force a purist approach to this problem and switch off this mode to get back a reliable behaviour (even if it does seem like I have to take the long way around) call this idealized behaviour if you will. Ultimatly our JSP authoring tools will be powerful enough to automatically hide complex tag constructs like this and allow us to see at a glance the representation we most like to see but really whats saved in the raw file maybe the unrolled purist version. -- Darryl L. Miles - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: virtual host and JkMount with jk1.2.14
Danico Lee wrote:
i got tomcat5, apache1.3 and jk1.2.14. i'm very confused with
JkMount. in my http.conf, i have:
ServerName our_server
DocumentRoot "${tomcat_home}/webapps/test1"
JkAutoAlias ${tomcat_home}/webapps
JkMount /test1/* worker1
Are you sure the "${tomcat_home}" works in Apache. Try putting the full
path name there.
I've never thought the httpd.conf undergoes any substitution expansion
before parsing, let alone also have substitution expansion work within a
quoted string literal as well.
--
Darryl L. Miles
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
Re: Tomcat5 / war file deployment: symlink problem
Alan Cooper wrote: I have a tomcat5 installation running on a RHEL ES3 box which I am having some issues with. I have a symlink back to an images directory which is outside the context. This works fine and I can read the images etc. The problem occurs when I redeploy the context through the manager webapp: when the context is removed. the removal script seems to follow the symlinks, thus deleting my images directory. Any suggestions on how to avoid this? If they are part of the web-app then they should be inside the WAR in the first place. The idea of the WAR is that its a self-contained COMPLETE web-application with no (few) external dependancies. If they are an external repository your web-app can look into and work with, then you need to define some level of logical seporation in your web-app (like an API). This maybe as simple as defining a property key/value with the absolute path to the top-level directory of the repositorory then making all file access to it resolve the system path before using it. By doing that you can now move your images out of the web-app WAR file area and put them anywhere. This is only useful if your servlets want file access to the repository but it sounds like you want HTML access to "images/foobar.gif" so they can be served directly. -- Darryl L. Miles - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: How to automatically start tomcat 5.5.9 under linux using local user
Duong BaTien wrote: I set tomcat 5.5.9 running in port 8080 so it can be started without using the root user. However, when I start tomcat using linux rc.local at system start up (/apps/tomcat-5/bin/startup.sh), it seems that the tomcat instance is started under root. Question: Where do i set the user that starts tomcat instance via Redhat Fedora Core start up? READ: http://jakarta.apache.org/tomcat/tomcat-5.5-doc/setup.html Check out the "-user " argument to "jsvc" which may not be so well documented. For non-root running check out "jsvc" bundled with Tomcat: Extracted TC to /opt/jakarta-tomcat-5.5.9 # To run it as java service need to build jsvc cd $CATALINA_HOME/bin tar -zxvf jsvc.tar.gz cd jsvc-src autoconf JAVA_HOME="/opt/jdk1.5.0_04" export JAVA_HOME sh ./configure make cp jsvc .. cd .. # Create a system user for tomcat /usr/sbin/groupadd -g 155 jakarta /usr/sbin/useradd -u 155 -g jakarta -s /sbin/nologin jakarta # Fix all the permissions on the $CATALINA_HOME with chown jakarta. -R $CATALINA_HOME # This bit below you can put into your own startup script for TC and call each time JAVA_HOME="/opt/jdk1.5.0_04" export JAVA_HOME PATH="$JAVA_HOME/bin:$PATH" export PATH CATALINA_HOME=/opt/jakarta-tomcat-5.5.9 export CATALINA_HOME cd $CATALINA_HOME ./bin/jsvc -Djava.endorsed.dirs=./common/endorsed -cp ./bin/bootstrap.jar \ -outfile ./logs/catalina.out -errfile ./logs/catalina.err \ -pidfile "./logs/jsvc.pid" \ -user jakarta \ org.apache.catalina.startup.Bootstrap Maybe you create a script in /etc/init.d/mytomcat that works the same way at the others in there ? Then symlink from each useful runlevel /etc/rc.d/rc[345].d/mytomcat -> /etc/initd.d/mytomcat, use /sbin/runlevel to see which you are at already. Maybe you are lazy and simply add a few lines to /etc/rc.local ? Eitherway should do the trick. -- Darryl L. Miles - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Virtual Hosting with WAR files
Charles Meier wrote: If I understand this setup correctly, you would be running one instance of Tomcat for all of your virtual hosts. This has the disadvantage that if one virtual host needs to be restarted, you will need to restart Tomcat for all of your virtual hosts. An alternative is to let Apache handle the virtual hosts and run multiple instances of Tomcat -- one instance per virtual host. This requires multiple mod_jk instances, each communicating across a unique port with an instance of Tomcat. Each Tomcat should be deployed to its own home dir w/ its own CATALINA_HOME pointing to that directory and with each Tomcat given its own start/stop.sh script that sets CATALINA_HOME. This is more complex to set up, and I'm not sure how many separate Tomcats this can handle, but it does allow you to have something like: Maybe this is realistic in your hosting setup, but it would be absurd in mine. The fact you are concerned that VirtualHost changing on the fly is an issue suggests you might have a great many VirtualHosts in the first place and to give each one their own JVM would be absurd. As each JVM gets more and more use they will eat up system resources that it wont necessarly be given back to the system. Each Apache instance will end up with a AJP socket open to each TC it would multiply up the socket usage, memory usage. All so that you dont have to restart TC for VirtualHost changes. I would much sooner write the code in TC (if its not already been done) to allow level configuration changes to take place at runtime. -- Darryl L. Miles - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Apache/Tomcat integration - Update
Do you have a line in Apache: NameVirtualHost *:80 I dont think ServerName should have the port number after it. This and ServerAlias are Host: header matching values. I suspect your only remaining problem now is to get Apache and Tomcat to see the same website document roots for the same URLs. This maybe a problem if you are using deployed WARs since tomcat can and will delete the directory from under apache during the deployment process. How do you mean "TC can and will delete the directory from under Apache"? Which directory do you mean? At this point, I am only trying to view the WARs bundled with TC. I am starting TC before Apache with the apps already deployed (so far). I suggest you learn more about the exact nature of the "deployment procedure" from an packed WAR to an unpacked WAR that goes in within TC. -- Darryl L. Miles - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Apache/Tomcat integration - What am I doing wrong?
Kyle wrote: But I have not yet managed to get www.host.domain.com/-examples/ to work without returning a 500 Error. First is it apache or tomcat that is returning the 500 ? I'll leave the 500 question till I can be certain of the answer. I thought it could only be Apache. Will however ensure now. Then breaking the ServerName and ServerAlias configuration in apache (restarting apache inbetween) Not certain I understand what you mean here. Break them ... ?? Do you simply mean give the default VHost a diff. name to the general ServerName directive above? I mean when you are stuck and don't know. Somethings are easier to deliberatly break the configuration and observe the result (i.e. where the error shows up now). Since you are trying to work out if the 500 is being produced directly from Apache or is a response apache is just relaying that really came from Tomcat. It smells like apache to me, but until you can prove it you wont really know. You need to confirm that requests for the vhost are being correctly routed into the VirtualHost section of the apache config. If they are not then there is no sense looking at the JkMount configuration yet. So if you have logging setup in apache both in the global config /usr/local/apache/log/access_log and in the section to /tmp/foobar/someother/file/access_log then depending upon which file the request gets logged will confirm to you that Apache is correctly configured and working for vhost operation and the section your JkMount's are in it indeed coming into play. JkMount /admin/* ajp13Wkr This will pass-thru apache everything for the webapp to TC. I would revise your JkMount to look like: The multiple jkMount Directives are auto-generated by Tomcat. I could revise. I just thought it best to just leave them. I suspect they are so that IF I were to put any static content in those directories, Apache would pick it up instead. Yes. But in the situation you are in, setting up "/admin/*" should make Apache bounce the request off Tomcat if it was not table to serve the content itself. I am not at all sure what the order of preceedence is with mixing "Alias", "JkMount" or if the file itself it found in the document root. Once you have that established you can then work on your JkMount settings and Tomcat. Have you checked out, understood and implement the information in http://jakarta.apache.org/tomcat/tomcat-5.5-doc/config/host.html#Host+Name+Aliases ? Interesting question. Read it, I have. It is not however clear to me as to whether or not TC _MUST_ have a _Different_ "VirtualHost Name" than the default VHost name in Apache or whether it should be the same. And then whether or not an Alias can or cannot be the same as some other name for that same machine. Does this mean effectively there should be 3 different names for the same machine to function in this manner? I.e. The "ServerName" directive in httpd.conf The "ServerName" for the default VHost AND yet ANother different defaultHost/Host name for Tomcat Different No. The idea is that you can service some content via Apache directly (maybe this is also PHP or Perl) and other content via Apache+Tomcat. Apache is always in control, if the request is not forwarded to Tomcat then you will see the usual Apache like responses (404). So if you want to a single hostname in the URL then you need to configure both Apache (ServerName/ServerAlias) and Tomcat ( / ) to responsd to the same hostname. I suspect your only remaining problem now is to get Apache and Tomcat to see the same website document roots for the same URLs. This maybe a problem if you are using deployed WARs since tomcat can and will delete the directory from under apache during the deployment process. So far, I am only trying to view the examples and default admin app.s that come bundled with TC. If I understand you correctly here, you are effectively saying that the auto-conf file generated by TC is not up to the job and I should dump it in favour of manual inline config. No... I'm not saying that I have no idea your Apache configuration was auto-generated by TC. I'm just offering you a methodoligy to observe some change in behaviour so you can work through the problem yourself. -- Darryl L. Miles - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Apache/Tomcat integration - What am I doing wrong?
dex.jsp ajp13Wkr JkMount /admin/host/hosts.jsp ajp13Wkr JkMount /admin/saved.jsp ajp13Wkr JkMount /admin/server/server.jsp ajp13Wkr JkMount /admin/resources/dataSource.jsp ajp13Wkr .. ### # with lots more mappings as generated by tomcat. # ### # Static files Alias /jsp-examples "/opt/jakarta-tomcat-5.5.9/webapps/jsp-examples" Options Indexes FollowSymLinks DirectoryIndex index.jsp index.html index.htm Order allow,deny Allow from all # Deny direct access to WEB-INF and META-INF # AllowOverride None deny from all AllowOverride None deny from all JkMount /jsp-examples/security/protected/j_security_check ajp13Wkr JkMount /jsp-examples/*.jsp ajp13Wkr JkMount /jsp-examples/forward/one.jsp ajp13Wkr JkMount /jsp-examples/tagplugin/foreach.jsp ajp13Wkr JkMount /jsp-examples/dates/date.jsp ajp13Wkr JkMount /jsp-examples/jsp2/tagfiles/panel.jsp ajp13Wkr --- WHAT am I doing wrong please? - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] -- Darryl L. Miles M: 07968 320 114 - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Virtual Hosting with WAR files
in $CATALINA_BASE/conf/server.xml merge these settings: foo.com Ensure the 3 sets of "webapps" and "work" directories are writable by the userid your JVM is running as. Mahesh S Kudva wrote: I have setup Tomcat+Apache2+mod_jk. I have 3 application in war files namely flie1.war, file2.war and file3.war. To deploy, I just put them in the deploy folder and access then using the urls: http://foo.com/file1 http://foo.com/file2 http://foo.com/file3 This works perfectly for me. I want to change this to simple urls as follows: http://file1.foo.com http://file2.foo.com http://file3.foo.com I have also read the notes on Virtual hosting: http://jakarta.apache.org/tomcat/connectors-doc- archive/jk2/jk2/vhosthowto.html Even though I am not able to configure Tomcat to connect to the war files as requested. How do I configure tomcat to connect to the correct war file as requested? Any help will be appreciated. -- Darryl L. Miles - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
400 No Host matches server name BLAH
With Jakatra/5.5.9 I'm having trouble settings up a that has its appBase="" setup outside of the usual $CATALINA_BASE directory tree. Tomcat is running as userid "jakarta", file permissions are all fine and my web application auto-deploys sucessfully from a WAR within the alternate appBase="" directory tree. But when I do HTTP request to my simple /index.jsp file I get the HTTP error "400 No Host matches server name test.foobar.com" If I try and access my page as /MyROOT/index.jsp that works, but the META-INF/context.xml has a configuration that tries to setup this application as the default context (path=""). I believe I'm doing all the correct things to make this work. I would also like to alias two (or more) contexts to the same web-app. The default (path="") being just one of them. I would like this to be possible from within the WAR file, but it appears only one is allowed inside META-INF/context.xml as its the outer document tag for that file. What do others thing, if it would be useful for TC to implement a TC specific extension that simply searched for META-INF/tomcat-context.xml that would facilitate the multiple creation from WAR deployment. Your help appreciated. # telnet localhost 8080 Trying 127.0.0.1... Connected to localhost.localdomain (127.0.0.1). Escape character is '^]'. GET /index.jsp HTTP/1.0 User-Agent: Wget/1.9.1 Host: test.foobar.com Accept: */* Connection: Keep-Alive Pragma: no-cache HTTP/1.1 400 No Host matches server name test.foobar.com Server: Apache-Coyote/1.1 Date: Tue, 16 Aug 2005 03:45:20 GMT Connection: close Connection closed by foreign host. # cat /opt/jakarta-tomcat-5.5.9/conf/Catalina/test.foobar.com/MyROOT.xml # cd /opt/test.foobar.com && find tomcat tomcat tomcat/webapps tomcat/webapps/MyROOT tomcat/webapps/MyROOT/index.jsp tomcat/webapps/MyROOT/WEB-INF tomcat/webapps/MyROOT/WEB-INF/web.xml tomcat/webapps/MyROOT/WEB-INF/classes tomcat/webapps/MyROOT/WEB-INF/classes/test tomcat/webapps/MyROOT/WEB-INF/classes/test/Klass.java tomcat/webapps/MyROOT/WEB-INF/classes/test/Klass.class tomcat/webapps/MyROOT/META-INF tomcat/webapps/MyROOT/META-INF/context.xml tomcat/webapps/MyROOT/META-INF/MANIFEST.MF tomcat/webapps/MyROOT.war tomcat/work tomcat/work/MyROOT tomcat/work/MyROOT/tldCache.ser # ls -lad tomcat tomcat/webapps tomcat/work tomcat/webapps/MyROOT.war drwxrwxr-x 4 jakartajakarta 4096 Aug 3 12:31 tomcat drwxrwxr-x 3 ftpuserjakarta 4096 Aug 16 04:39 tomcat/webapps -rw-rw-r-- 1 ftpuserjakarta 2251 Aug 16 04:39 tomcat/webapps/MyROOT.war drwxrwxr-x 3 jakartajakarta 4096 Aug 16 04:39 tomcat/work # ps uax | grep jsvc root 22427 0.0 0.0 1600 536 ?Ss Aug08 0:00 jsvc.exec -Djava.endorsed.dirs=./common/endorsed -classpath :/opt/jakarta-tomcat-5.5.9/bin/bootstrap.jar:/opt/jakarta-tomcat-5.5.9/bin/commons-logging-api.jar -Dcatalina.base=/opt/jakarta-tomcat-5.5.9 -Dcatalina.home=/opt/jakarta-tomcat-5.5.9 -Djava.io.tmpdir=/opt/jakarta-tomcat-5.5.9/temp -outfile ./logs/catalina.out -errfile ./logs/catalina.err -pidfile ./logs/jsvc.pid -user jakarta -Xmx2048M -Xms512M -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager org.apache.catalina.startup.Bootstrap start jakarta 22428 0.0 1.1 2353532 86788 ? Sl Aug08 3:05 jsvc.exec -Djava.endorsed.dirs=./common/endorsed -classpath :/opt/jakarta-tomcat-5.5.9/bin/bootstrap.jar:/opt/jakarta-tomcat-5.5.9/bin/commons-logging-api.jar -Dcatalina.base=/opt/jakarta-tomcat-5.5.9 -Dcatalina.home=/opt/jakarta-tomcat-5.5.9 -Djava.io.tmpdir=/opt/jakarta-tomcat-5.5.9/temp -outfile ./logs/catalina.out -errfile ./logs/catalina.err -pidfile ./logs/jsvc.pid -user jakarta -Xmx2048M -Xms512M -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager org.apache.catalina.startup.Bootstrap start -- Darryl L. Miles - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: data push
Patrick Thomas wrote: Your remark about POJOs being part of the API prompted me to chime in -- William pretty much gave you the general answer, that Tomcat doesn't seem to be the best way to go for this (because everything is passed via http). Maybe HTTP is the transport protocol for a messaging framework that runs on top. I don't know enough about all the different intra-JVM mechanisms I've head of CORBA, RMI over IIOP, EJB Remote, XML-RPC, and a dozen more related protocols. Some are too raw or not a framework, some cover multiple levels of the same problem. A more featureful Application Server (like JBoss) can already do EJB Local/Remote call design patterns out of the box, I don't (think I) need JBoss and everything it is. I suppose what throwing in the air is the question: Is there a web resource that details each of the common intra-JVM communication mechanisms thats in place for their pro's con's, everything from memory consumption, runtime speed, security policies, programming interface, easy of setting up how to future proof remotable API usage so it remains compatible and extensible at the same time. Then what contracts does each of these mechanisms provide to the applications that use them. HTTP could be a big part of a push or pull data mechanism or it maybe implemented outside of HTTP with raw sockets and another wire protocol, in this case it would be a JAR file that sides outside of tomcat itself and my application which is running in the same JVM as TC would use it independatly of TC. Your serializing objects idea is a little too raw for my use, I'm looking for something with a more reliable contract and wider community testing than a roll your own TCPIP stack approach. -- Darryl L. Miles - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: data push
Paul Wallace wrote: Thanks Len, And what of other protocols? Are sockets then required? What are some other protocols that might be used to push/pull data? (off Tomcat I know ;)) Paul. I'm interested in the answer to this too. What terms do I stick into google to find generic socket based communication systems between isolated JVMs ? Protocols, Frameworks, something that will slot in with TC but not as raw as HTTP I want the API to be a POJO as possible but with a open / setup / work / close cycle. Idealy I'm really after a multiplexing (read as single socket) messaging framework that can deliver command / event like objects to a remote JVM for processing then return the appropiate reponse object and have multiple events outstanding all in different states with any sized payload. -- Darryl L. Miles - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: HELP: Tomcat 5.5.9 with jsvc as low priviledges user on Linux fails in Bootstrap
MC Moisei wrote: java.io.FileNotFoundException: /usr/local/tomcat/tomcat_home/conf/tomcat-users.xml.new (Permission denied) at java.io.FileOutputStream.open(Native Method) This smells like its calling for write access to the DIRECTORY /usr/local/tomcat/tomcat_home/conf/ (not the file) Unless you have a left over file that is actually called conf/tomcat-users.xml.new from a previous execution of TC that did not complete the edit and rename. In which case I think you need to delete the conf/tomcat-users.xml.new file (after you've ensured you have a valid and working conf/tomcat-users.xml file itself). FYI - I run jsvc too and have not seen this problem with 5.5.9. jsvc.exec -Djava.endorsed.dirs=./common/endorsed -classpath :/opt/jakarta-tomcat-5.5.9/bin/bootstrap.jar:/opt/jakarta-tomcat-5.5.9/bin/commons-logging-api.jar -Dcatalina.base=/opt/jakarta-tomcat-5.5.9 -Dcatalina.home=/opt/jakarta-tomcat-5.5.9 -Djava.io.tmpdir=/opt/jakarta-tomcat-5.5.9/temp -outfile ./logs/catalina.out -errfile ./logs/catalina.err -pidfile ./logs/jsvc.pid -user jakarta -Xmx2048M -Xms512M -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager org.apache.catalina.startup.Bootstrap start -- Darryl L. Miles - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: TC5.5.9 Linux - shutdown port 8005 not bound BUG?
FYI - From TC bugzilla. So I added "-pidfile jsvc.pid" to my execution and am not killing the jsvc process not the JVM itself. --- Additional Comments From [EMAIL PROTECTED] 2005-08-02 03:51 --- This is by design. With jsvc, you are supposed to shutdown Tomcat by: kill -TERM `cat $PIDFILE` As a result, jsvc doesn't tell Tomcat to listen on port 8005. -- Darryl L. Miles - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: TC5.5.9 Linux - shutdown port 8005 not bound BUG?
Peter Crowther wrote: From: Darryl L. Miles [mailto:[EMAIL PROTECTED] Subject: TC5.5.9 Linux - shutdown port 8005 not bound BUG? I've never had TC bind itself to 127.0.0.1:8005 to allow correct shutdown to occur. [...] $ netstat -tanp | grep 80 tcp0 0 :::127.0.0.1:8009 :::*LISTEN 4621/jsvc.exec There it is, on 8009 not 8005. Should I file this as a bug ? Depends - have you changed your server.xml at all? Sorry yes... 8009 is the apj13 port (was figuring you'd guess). My apache is using it locally I have added address="127.0.0.1" for ajp13 so its not exposed externally. -- Darryl L. Miles - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
TC5.5.9 Linux - shutdown port 8005 not bound BUG?
I've never had TC bind itself to 127.0.0.1:8005 to allow correct shutdown to occur. I've always had to kill the TC JVM. I use JSVC to be able to get a non-root userid. Does this affect how the shutdown port works ? My startup command line: ./bin/jsvc -Djava.endorsed.dirs=./common/endorsed -classpath :/opt/jakarta-tomcat-5.5.9/bin/bootstrap.jar:/opt/jakarta-tomcat-5.5.9/bin/commons-logging-api.jar -Dcatalina.base=/opt/jakarta-tomcat-5.5.9 -Dcatalina.home=/opt/jakarta-tomcat-5.5.9 -Djava.io.tmpdir=/opt/jakarta-tomcat-5.5.9/temp -outfile ./logs/catalina.out -errfile ./logs/catalina.err -user jakarta -Xmx2048M -Xms512M -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager org.apache.catalina.startup.Bootstrap start $ netstat -tanp | grep 80 tcp0 0 :::127.0.0.1:8009 :::*LISTEN 4621/jsvc.exec tcp0 0 :::127.0.0.1:8080 :::*LISTEN 4621/jsvc.exec Should I file this as a bug ? -- Darryl L. Miles - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Placing a LifecycleListener in my server.xml
Mark Benussi wrote: Thanks Darryl I have followed this guide but don't know how to add the modify the server.xml I attached to reflect this. Also are you saying I should put the class that implements the listener in the server/classes? I am fine with this but wasn't sure if it would all get loaded together as the class is a Singleton that the rest of my code talks to and need to be sure it will have access to the same class instance in the JVM. From the example you quoted right at the top there is: [...SNIP...] [...SNIP...] So you just add your: To confirm location grep "jar -tvf tomcat-foobar.jar" from $CATALINA_HOME/servers/lib for mbeans/ServerLifecycleListener.class. As for ensuring the SAME instance of the Singleton is found, maybe you must put it into $CATALINA_HOME/common/lib not server/lib! Please read up on the differencies for clarification. It is my understanding that only the Tomcat Application Server itself loads classes from $CATALINA_HOME/servers/* and that all librarys in $CATALINA_HOME/common/* are available to both the AS and the WEBAPP contexts. Just make sure you dont override the class by also installing it into the WEB-INF/* area. If this does not work maybe JNDI is the only way, that is bind the instance to a JNDI path at the first lifecycle event then all the webapps can lookup and use it (if simplistic class loading does not work). I have not used this method before as I found other ways to do what I needed, I wanted to deploy the listener within my webapp. -Original Message----- From: Darryl L. Miles [mailto:[EMAIL PROTECTED] Sent: 27 July 2005 12:10 To: Tomcat Users List Subject: Re: Placing a LifecycleListener in my server.xml Sorry did not read properly.. Have you tried: for JARs: $CATALINA_HOME/server/lib or $CATALINA_HOME/common/lib for .class: $CATALINA_HOME/server/classes or $CATALINA_HOME/common/classes From: http://jakarta.apache.org/tomcat/tomcat-5.5-doc/config/context.html *Lifecycle Listeners* If you have implemented a Java object that needs to know when this *Context* is started or stopped, you can declare it by nesting a *Listener* element inside this element. The class name you specify must implement the |org.apache.catalina.LifecycleListener| interface, and it will be notified about the occurrence of the coresponding lifecycle events. Configuration of such a listener looks like this: ... ... Note that a Listener can have any number of additional properties that may be configured from this element. Attribute names are matched to corresponding JavaBean property names using the standard property method naming patterns. -- Darryl L. Miles - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Placing a LifecycleListener in my server.xml
Sorry did not read properly.. Have you tried: for JARs: $CATALINA_HOME/server/lib or $CATALINA_HOME/common/lib for .class: $CATALINA_HOME/server/classes or $CATALINA_HOME/common/classes From: http://jakarta.apache.org/tomcat/tomcat-5.5-doc/config/context.html *Lifecycle Listeners* If you have implemented a Java object that needs to know when this *Context* is started or stopped, you can declare it by nesting a *Listener* element inside this element. The class name you specify must implement the |org.apache.catalina.LifecycleListener| interface, and it will be notified about the occurrence of the coresponding lifecycle events. Configuration of such a listener looks like this: ... ... Note that a Listener can have any number of additional properties that may be configured from this element. Attribute names are matched to corresponding JavaBean property names using the standard property method naming patterns. Mark Benussi wrote: Thanks Darryl but I need to implement a LifecycleListener. You have implemented a ServletContextListener which only gets called when the Content is started. I need to know when its finished, which is why I am using a LifecycleListener which should be placed in the server.xml Original Message Follows From: "Darryl L. Miles" <[EMAIL PROTECTED]> Reply-To: "Tomcat Users List" To: Tomcat Users List Subject: Re: Placing a LifecycleListener in my server.xml Date: Wed, 27 Jul 2005 11:47:17 +0100 Mark Benussi wrote: Anyone have any ideas where on earth I put my class that implements the LifecycleListener (In a jar in my WEB-INF/lib) as I don't seem to have a context in my server.xml. The context is in WEB-INF/web.xml as its a webapp specific listener, NOT a global server thing. See my article http://www.hibernate.org/301.html as an example (when used with hibernate) -- Darryl L. Miles - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] . -- Darryl L. Miles - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Placing a LifecycleListener in my server.xml
Sorry did not read properly.. Have you tried: for JARs: $CATALINA_HOME/server/lib or $CATALINA_HOME/common/lib for .class: $CATALINA_HOME/server/classes or $CATALINA_HOME/common/classes From: http://jakarta.apache.org/tomcat/tomcat-5.5-doc/config/context.html *Lifecycle Listeners* If you have implemented a Java object that needs to know when this *Context* is started or stopped, you can declare it by nesting a *Listener* element inside this element. The class name you specify must implement the |org.apache.catalina.LifecycleListener| interface, and it will be notified about the occurrence of the coresponding lifecycle events. Configuration of such a listener looks like this: ... ... Note that a Listener can have any number of additional properties that may be configured from this element. Attribute names are matched to corresponding JavaBean property names using the standard property method naming patterns. Mark Benussi wrote: Thanks Darryl but I need to implement a LifecycleListener. You have implemented a ServletContextListener which only gets called when the Content is started. I need to know when its finished, which is why I am using a LifecycleListener which should be placed in the server.xml Original Message Follows From: "Darryl L. Miles" <[EMAIL PROTECTED]> Reply-To: "Tomcat Users List" To: Tomcat Users List Subject: Re: Placing a LifecycleListener in my server.xml Date: Wed, 27 Jul 2005 11:47:17 +0100 Mark Benussi wrote: Anyone have any ideas where on earth I put my class that implements the LifecycleListener (In a jar in my WEB-INF/lib) as I don't seem to have a context in my server.xml. The context is in WEB-INF/web.xml as its a webapp specific listener, NOT a global server thing. See my article http://www.hibernate.org/301.html as an example (when used with hibernate) -- Darryl L. Miles - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] . -- Darryl L. Miles M: 07968 320 114 - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: setting -Xss option and its impact on servlet threads
Peddireddy Srikanth wrote: 1) what is the default stack size for Sun JVM on windows (Win 2003 to be more specefic)?? Dont know. 2) Will this setting affect both normal threads and the servlet threads created by tomcat?? or only normal threads? I believe there is a 1:1 corelation between all Java application threads, be they Servlet or normal threads. That is to say a Servlet thread uses exactly 1 Java thread. 3) If I set that to, say 128K , and if some of my thread (servlet or normal) needed more stack space than this in any case what happens (obvious answer for this would be that thread execution would fail but I want to know it from some one who experienced it) Are you able to change the stack size on a per Java Thread basis? If the underlying JVM uses kernel level threads and stack arrangement in a 1:1 fashion (unlikely from the observations I've seen), an unmapped page/area is usualy left at the end of the stack space if this is touched (read or write) the application will get a terminal signal and the entire JVM forced to exit just like it would accessing any other bit of invalid memory. However as JVM is a sandbox and it can know the amount of stack space a method needs before its invoked it is completely possible for it to be able to check/test its virtual Java stack has enough space left in the CPU instruction stack as there does not need to be 1:1 to the Java execution stack. Its possible for a JVM to implement its Java code execution stack completely within the operating system heap area. I dont believe Java in general needs a large java execution stack as all arrays are implemented as object allocations that come from the heap. So its not like the C language where you can have a few Kb byte array on a whim, in Java it just has to store the pointers to that array as a local variable in the java execution stack. I would be very interested to understand how Sun's JVM application stack works and its interactions with OS level threads, stacks and address space applications. With platform level threads there is a clear trade off with thread stack size and number of available threads, amount of available heap and number of library / file mappings (when working with 32bit CPUs at least). They all squeeze each other for their bit of address space but in Java this does not seem to be the case so much. -- Darryl L. Miles - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Placing a LifecycleListener in my server.xml
Mark Benussi wrote: Anyone have any ideas where on earth I put my class that implements the LifecycleListener (In a jar in my WEB-INF/lib) as I don't seem to have a context in my server.xml. The context is in WEB-INF/web.xml as its a webapp specific listener, NOT a global server thing. See my article http://www.hibernate.org/301.html as an example (when used with hibernate) -- Darryl L. Miles - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Ports 8005 8009 8080 in default Tomcat 4.x installation.
127.0.0.1:8005 : Shutdown port, I've not seen this working in TC in a while. You are meant to be able to connect and send the shutdown password with EOL and it instructs TC to shutdown gracefully. Other method of doing the same include installing the TC admin webapp and doing the same thing from the frontend. 127.0.0.1:8009 AJP/1.3 (Apache J Protocol) Connector port. This is used to connect Tomcat to another webserver, for example with Apache Httpd you would install mod_jk in the httpd and it would connect to TC on this port. There are also other connectors for IIS that use this common wire protocol to comunicate. I believe this wraps the HTTP request response with other control information in a more machine readable format than making TC re-parse the entire HTTP request and also can convery SSL security info if mod_ssl is in use. publicIP:8080 HTTP Webserver. This is a direct HTTP server implementation Coyote inside TC, this allows TC to act as a standalone webserver without the need for Apache/IIS. Leon Pu wrote: After lauching Tomcat with the default ports setting in conf/server.xml. I use netstat to check the opening ports, but I only found 8080 port is using. What's the exact usage of preceding three ports? -- Darryl L. Miles - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Max thread/session timeouts
Kenneth Litwak wrote: We're running an application on Tomcat that often hits the limit of 150 threads. Can someone with experience changing this value give me advice on it? How big can you make this number? How much extra memory do I need if I say change it to, say, 500? Thanks. I take it you know the 150 is the default limt in the config/server.xml and this can be upped towards you operating system platform maximum. A ball park of your applications memory needs @150 threads is better chcked by simply looking at the paged in size while under that load (the RSS size in "ps uaxw" under Unix). You can't expect us to guess exactly how much more memory you need from the information you've given, I mean you've not told us if you already have 8Gb of RAM installed or just 32Mb for us to at least take a guess at the answer. Maybe the Java VM -Xss is a useful option to look at, but I think providing you are not hitting your upper limit on a single process memory usage (into the 3/4Gb realm on 32bit) for a high number of threads then it will make little difference. As I believe stack space just like other application memory is paged in as its used and reducing the stack space to a lower limit than your application need will just make it crash. -- Darryl L. Miles - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: IE-Page not found problem
Mark Leone wrote: The point is that IE is not providing the resource to the user *the first time* because there is a no-cache directive associated with it. IMO there is noting in the HTTP spec that even hints that this is how the no-cache directive is to be used. If IE needs to temporarily store the resource in order to provide it to the user, and a no-cache header is present, then it should find a way to give it to the user without caching it (which of course is not the same thing as temporarily storing it for spooling purposes), instead of refusing to let the user see it the first time the server sends it, and then hiding behind the HTTP spec to justify a poor implementation. I think the end result speaks for itself. What possible use could a no-cache directive have if it means that user agents can't even give the resource to the user the first time it's requested? If this is really what the spec means, then every non-cacheable resource on the web is a self-licking ice-cream cone. Probably tastes great, but no one will ever really know. All the other user agent implementers seem to have interpreted the spec appropriately, without failing to give the users the resource the server explicitly provided to them. Maybe IEs implementation existed before HTTP 1.1 and before the "no-store" option was introducted, which seems to clarify the matter of what isn't allowed to be stored to disk, there is nothing else in the specififcation that mandates the user-agent or cache can not (in the process of serving the orginary request) store it to disk (if the implementation needs to). From the HTTP spec point of view caching is "just an observable concept", I make this statement to disconnect it from the presumption it has anything to do with storing to disk or not. I agree with you on what possible use could no-cache be within IE if implemented their way. I've worked with dynamic HTML for quite a few years and can't remember stumbling over this problem, what is the simplest server response that triggers this problem in IE ? Darryl - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: IE-Page not found problem
Mark Leone wrote: It's a silly problem. I ran in to it a while back, and it really mystified me until I found the bug write-up. Tomcat is doing the right thing, but MS has declared that IE is working "as designed" in this. FWIW, the HTTP spec is clear that the no-cache behavior applies to HTTP intermediaries, not user agents. "the HTTP spec is clear that the no-cache behavior applies to HTTP intermediaries, not user agents." Are you really sure ? I have always understood the HTTP 1.1, "Cache-Control no-cache" response header to be able to control both intermediaries and user agent caching activities. The specification does not talk in terms of user agent caches and intermediary caches it only talks in terms of caching operations (for the large part) with a few additional directives to target shared-public and/or private cache behaviour. As there is no differenciation between shared-public and private caches when it comes to the "no-cache" directive, all caches must revalidate the request before subsequent reuse, this means an If-Modified-Since is an allowed type of request to the server, but since most non-static Tomcat/Perl/CGI/WhateverTechnology do not handle If-Modified-Since request directives anyway. A new page is generated and a 200 response given, the net effect is no observable caching effect. The important point of "no-cache" is your HTTP client must ask the server before you re-use your cached object, its upto the server to then say "No! Here use this instead". This does not help you with your IE problem thats just bad handling of the response. Darryl - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
