Re: is the Tomcat-7 WsRemoteEndpointImplBase send methods threadsafe, or should we be synchronizing until the Future.get() returns?
On 22/10/2013 00:28, Bob DeRemer wrote: I'm trying to understand how Tomcat's outbound message processing works with respect to making multiple (concurrent) calls against a single RemoteEndpoint.Async using sendText/sendObject. Based on the ExecutionExceptions we got (see below), it seems that we should probably synchronize sends until the Future.get() returns, but I want to check with the community to be sure. I tried searching the javadocs of RemoteEndpoint.Async and associated interfaces, but could not find anything describing the threadsafe nature (existing or not). It appears that the spec lets the implementation determine how to handle stuff under the covers. This is fine, but we just need to understand what that means to multi-threaded code that wants to send messages. There was some discussion [1] in the EG on this point and the conclusion was that the previous message had to complete before the next message was sent. If you batching is used (which Tomcat supports) the semantics for complete change but the previous message still has to complete before the next is sent. I've looked through the specification and I don't see this made clear anywhere. My experience of the J2EE EG's is that in cases like these following the intention of the EG based on the mailing list archive is the way to go. Looking at the Tomcat code, it looks like WsRemoteEndpointImplBase uses a static SendHandler (i.e. TextMessageSendHandler). That is a static definition of a class, not a static instance. A new instance is created for each message. I noticed a little further down in the stack the logic does synchronize around a messagePartQueue, but this seems to be for handling parts of a single message. Correct. That is to ensure correct state management when different threads are sending different parts of the message. Otherwise, it looks like it doesn't expect another message to be sent until it's finished writing out. Correct. It should throw an exception if you try. ExecutionException: In some recent testing of our client/server Endpoint(s) (using a locally built instance of Tomcat 7.0.48), we got ExecutionExceptions when sending messages concurrently without any delay. The errors started with a few Null Ptr(s), then were all wsRemoteEndpoint.inProgress (Message will not be sent because the WebSocket session is currently sending another message) Is my understanding correct, or am I missing something? Thanks in advance for any clarification. HTH, Mark [1] https://java.net/projects/websocket-spec/lists/jsr356-experts/archive/2013-02/message/1 - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Reg: Connection pool statistics
Hi, Is it possible to get the statistics of a connection pool programmatically, say when was it created? The maximum time taken by a query which used the connection from this connection pool? Statistics like these... -Anu
RE: is the Tomcat-7 WsRemoteEndpointImplBase send methods threadsafe, or should we be synchronizing until the Future.get() returns?
-Original Message- From: Niki Dokovski [mailto:nick...@gmail.com] Sent: Tuesday, October 22, 2013 1:11 AM To: Tomcat Users List Subject: Re: is the Tomcat-7 WsRemoteEndpointImplBase send methods threadsafe, or should we be synchronizing until the Future.get() returns? On Tue, Oct 22, 2013 at 3:29 AM, David Bullock david.bull...@machaira.com.au wrote: Hi Bob, I tried searching the javadocs of RemoteEndpoint.Async and associated interfaces, but could not find anything describing the threadsafe nature (existing or not). It appears that the spec lets the implementation determine how to handle stuff under the covers. This is fine, but we just need to understand what that means to multi-threaded code that wants to send messages. JSR 356 Specification Section 5.1 Threading Consideration discusses the topic. In particular; [WSC-5.1-2] - the implementation must not invoke an endpoint instance with more than one thread per peer at a time. [WSC-5.1-4] - a websocket endpoint instance is never called by more than one container thread at a time per peer. cheers Thank you, Niki, for the spec clarification bob I'd have thought that where an interface doesn't declare that it is threadsafe, one cannot assume that it will be. Further, if a RemoteEndpoint represents 'the peer of a web socket conversation', then a RemoteEndpoint, like a conversation, can surely support only a single 'conversation state'? IMHO, the correct choice is for each thread to have its own RemoteEndpoint. If the protocol being used happens to multiplex multiple conversations to/from different endpoints over the same TCP/UDP socket (for example), then the plumbing will do the appropriate synchronization at that point - there would be no advantage (and possibly some big disadvantages) for you to do your own synchronization. Critically, a RemoteEndpoint does not necessarily represent a 'heavyweight' object like a Socket, and you should not be at pains to manage your own pool of them, nor necessarily (unless it made sense for application logic) to have a queue of messages which is dispatched from a single thread. However, I do think that many JSR's which ought to know better are very lame about thread-safety guarantees for application authors, and that more needs to be said in API documentation about patterns for concurrent usage. I encourage you to lobby your particular JSR of use to include this information in future releases of the specification. I did my bit recently at https://java.net/jira/browse/SERVLET_SPEC-81 cheers, David Bullock - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Restrict the use of JDK classes Tomcat 7 or 6
Hello, I would like to know if is it possible to restrict the use of JDK classes in Tomcat according to a list given in another file. ¿Is it possible by creating a new Add-on? If it is possible, where can I find documentation about creating Add-ons? I have looked up and I haven't found any information about it (I only have found AddOns in Tomcat 3.3 but there is nothing about creating new ones). Another idea to do that is by modifying the source code. Could anybody tell me where I should search to do that? Thank you very much. Analía de Pedro
Re: Restrict the use of JDK classes Tomcat 7 or 6
You can run Tomcat with its Security Manager, then you can setup which jar has which rights have a look here : http://tomcat.apache.org/tomcat-7.0-doc/security-manager-howto.html 2013/10/22 ANALIA DE PEDRO SANTAMARIA 100074...@alumnos.uc3m.es: Hello, I would like to know if is it possible to restrict the use of JDK classes in Tomcat according to a list given in another file. ¿Is it possible by creating a new Add-on? If it is possible, where can I find documentation about creating Add-ons? I have looked up and I haven't found any information about it (I only have found AddOns in Tomcat 3.3 but there is nothing about creating new ones). Another idea to do that is by modifying the source code. Could anybody tell me where I should search to do that? Thank you very much. Analía de Pedro - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Restrict the use of JDK classes Tomcat 7 or 6
2013/10/22 ANALIA DE PEDRO SANTAMARIA 100074...@alumnos.uc3m.es: Hello, I would like to know if is it possible to restrict the use of JDK classes in Tomcat according to a list given in another file. ¿Is it possible by creating a new Add-on? If it is possible, where can I find documentation about creating Add-ons? I have looked up and I haven't found any information about it (I only have found AddOns in Tomcat 3.3 but there is nothing about creating new ones). This sounds like a home work question. My spanish is bad, but alumnos is surely student in spanish. Hence the OP has had the cheek to send from the student account of his university. Do the mailing list rules state home work questions are in or out of scope? Chris - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Restrict the use of JDK classes Tomcat 7 or 6
From: cjder...@gmail.com [mailto:cjder...@gmail.com] On Behalf Of chris derham Subject: Re: Restrict the use of JDK classes Tomcat 7 or 6 Do the mailing list rules state home work questions are in or out of scope? To quote from How To Ask Questions The Smart Way (http://www.catb.org/~esr/faqs/smart-questions.html), which is linked to from the Tomcat mailing lists page: Don't post homework questions - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Connection pool statistics
-Original Message- From: Anu Prab [mailto:anupr...@gmail.com] Sent: Tuesday, October 22, 2013 4:36 AM To: Tomcat Users List Subject: Reg: Connection pool statistics Hi, Is it possible to get the statistics of a connection pool programmatically, say when was it created? The maximum time taken by a query which used the connection from this connection pool? Statistics like these... -Anu Check the documentation and/or JavaDocs for the library you are using for the connection pool. It is totally dependent on the software you've decided to use for creating/managing the pool. For example, I'm pretty sure that there is a management class for Oracle's Universal Connection Pool (UCP). - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Connection pool statistics
-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 Jeffrey, On 10/22/13 9:47 AM, Jeffrey Janner wrote: -Original Message- From: Anu Prab [mailto:anupr...@gmail.com] Sent: Tuesday, October 22, 2013 4:36 AM To: Tomcat Users List Subject: Reg: Connection pool statistics Hi, Is it possible to get the statistics of a connection pool programmatically, say when was it created? The maximum time taken by a query which used the connection from this connection pool? Statistics like these... -Anu Check the documentation and/or JavaDocs for the library you are using for the connection pool. It is totally dependent on the software you've decided to use for creating/managing the pool. For example, I'm pretty sure that there is a management class for Oracle's Universal Connection Pool (UCP). ...or hook-up a JMX browser to Tomcat and see what you can find... - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.14 (Darwin) Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBCAAGBQJSZpvVAAoJEBzwKT+lPKRYg/gP/j2cpAyOEDZ+eQc+yN9j4DhP HZ9ro/0ZEa+SkzuvrfnPbmfq0vIo8OtoyZuAgmQ2GGeaYrwtsRBuqyoNBQHdV+VH dMQC6ySb620Swf0L33Vnvszis2NCh5QIPft1Lyf/hJV/dQcl0n00Od8/ze1/+oHN jJSwCcQOQjiuZZAqQgL+aU5hG6KkLe4r0+RtCYdhJ0CUWO0KiX0geceAM+8syeO0 G0xe8rbC+aRz13lAJwnrTd9nw8DFIxw4rhCmDMP37tAuJ0iydCfwC0Lplms3rJAE qy4ZzUyqXv5huOQ0HGpMrJzEJgUaptZbDPmZ8ikjs2xLZPfkOSvThsQwFgC2Oowq hXkWw3KESWFXrrljuBXVioyxl9e28404YW6Hc6zXSmRoJG8x3dbAH8GSIBL4UNJy N9pafr4y3n/SlVFTvsc1Q9y3g6lm/Q0H/mhFCuUU2U38V1QwC8z6ukOF1gnVXAjs +3RxEgz7gOprEq/1MH1Iey5p8nP6z5Ga76C3YUFlQcS5M67pGpAXOggxzVQ7hrdS izB5llzZ+wTiu0NVEibHeAEBUkhyrlr1pe6UH9H0X1y4vK6Q7HkwJEP4mNcJU7s9 bAMnZ8LU1t/m8LbXmZUepnJ1TMnt1t8jCTNGDA/7Wulzm6hO9hr4FWw/8xY2tIuk Hrf6Jt9mf37ff4dXSBk0 =Yb3Q -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Tomcat 6.x crashes on tcnative-1.dll
-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 Teng, On 10/22/13 3:02 AM, Teng Khoo wrote: I am running tomcat 6.0.30 More than 2 years out-of-date. Just sayin'. with tcnative-1.dll (1.1.27) on Windows 2008 (64bit). Tomcat crashes 1-2 times in a week. Below is the core dump. Does anyone have any idea? tcnative 1.1.29 was just released which fixes a number of crashes recently identified. Could you try upgrading to 1.1.29 to see if your server stabalizes a bit? # # A fatal error has been detected by the Java Runtime Environment: # # EXCEPTION_ACCESS_VIOLATION (0xc005) at pc=0x0001800057b2, pid=1704, tid=376 # # JRE version: 6.0_27-b07 # Java VM: Java HotSpot(TM) 64-Bit Server VM (20.2-b06 mixed mode windows-amd64 compressed oops) # Problematic frame: # C [tcnative-1.dll+0x57b2] # # If you would like to submit a bug report, please visit: # http://java.sun.com/webapps/bugreport/crash.jsp # The crash happened outside the Java Virtual Machine in native code. # See problematic frame for where to report the bug. # Is there anything more to the crash report? Usually there is a report of which native function crashed (but maybe not available on win64 builds). Can you tell us if you are using APR (probably yes). Are you using OpenSSL via APR? Any other usage patterns you can let us know about? - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.14 (Darwin) Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBCAAGBQJSZpzQAAoJEBzwKT+lPKRY/nsP/RVnRK4hj0X2f6n9x6Spj3TM SNmodbRFdBXrlbKornD4rxClpyA1eX60kDni9qeToIPH44fXAOA0O1I+4zGSgCGk bzgyUCU08YNp8hAEd+zZ9SzXkeQzzr1DZlqsBJ4RmxsWs3Ed8F0tnCOzfK2V68dF R0/5BOPiSMErEyFzximcxquH2AwosVKJPvkW5Cd94YW/6B8ZRcrsrj3gsaPDQuPl 7Zb6/ai4GPE4f+3rUIFlE2B8y4NWZnPISdGH3U6CVsaj0dMoBX+KKJ7l7yfixriQ /SysOQFlAJWiG/Oucn/Nb4yUOjTvWuGyqnTeTwa4+RqoDpPwSF40k+VQQwyDsbO1 x8vDOoZEuf8PY7ssGBeGQCtC/QWCbL3Z7q9luD7qiTtuLrQH7Zq8Ci3CsJ32cNNq xNkn5laTkMGHHNGH59RApHPbBbDNO+jJC3fmk0pMHKJvzUoH7SOudHPpaLz1gOAR 5ogAdcjkceYHEcF6BPffMrMzSz1VEz0elhrRiHz8LFR2EuDxwUut2QdlYJ9VmrD3 Cg4A/y69irf10RuoU0k4BT68VexqWiyTZ/kb00Fs8heXw2VEx4PgW3eHcUqvm9XL bqtWiC2wZq8R40U9To2L4OAnbGgznXDgTJ2EWt62zoOWrGTHsTyU7CTBiF1pat2W zh/mwhz2/KRHzvtdlP79 =94Cw -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Restrict the use of JDK classes Tomcat 7 or 6
Caldarale, Charles R wrote: From: cjder...@gmail.com [mailto:cjder...@gmail.com] On Behalf Of chris derham Subject: Re: Restrict the use of JDK classes Tomcat 7 or 6 Do the mailing list rules state home work questions are in or out of scope? To quote from How To Ask Questions The Smart Way (http://www.catb.org/~esr/faqs/smart-questions.html), which is linked to from the Tomcat mailing lists page: Don't post homework questions Now come on guys. UCM3 is the Universidad Carlos III of Madrid, Spain. So we have an OP here who attends a Spanish university, is learning Java, has a genuine Spanish name, yet phrases questions correctly and politely in English, on a forum which the OP found and which is at least related to the subject. You do not have to solve her homework. But a bit of slack, a pointer or two from real Java experts ? And the fact that I am currently in Valencia, a mere 3 hours from Madrid, has absolutely nothing to do with any of this. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Restrict the use of JDK classes Tomcat 7 or 6
I'm sorry about the misunderstanding. My question isn't a homework question. I'm working in my Final Project and I have some doubts about Tomcat, that I need to solve in order to develop it properly. I had searched a lot before I wrote to the mailing list. I'm sorry if you have understood that I'm a lazy person who wants you to solve my work. However, my work is related to the university (the reason why I have wrote with my student account), so I understand it if you can't answer my questions. Thank you. 2013/10/22 André Warnier a...@ice-sa.com Caldarale, Charles R wrote: From: cjder...@gmail.com [mailto:cjder...@gmail.com] On Behalf Of chris derham Subject: Re: Restrict the use of JDK classes Tomcat 7 or 6 Do the mailing list rules state home work questions are in or out of scope? To quote from How To Ask Questions The Smart Way ( http://www.catb.org/~esr/**faqs/smart-questions.htmlhttp://www.catb.org/~esr/faqs/smart-questions.html), which is linked to from the Tomcat mailing lists page: Don't post homework questions Now come on guys. UCM3 is the Universidad Carlos III of Madrid, Spain. So we have an OP here who attends a Spanish university, is learning Java, has a genuine Spanish name, yet phrases questions correctly and politely in English, on a forum which the OP found and which is at least related to the subject. You do not have to solve her homework. But a bit of slack, a pointer or two from real Java experts ? And the fact that I am currently in Valencia, a mere 3 hours from Madrid, has absolutely nothing to do with any of this. --**--**- To unsubscribe, e-mail: users-unsubscribe@tomcat.**apache.orgusers-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Restrict the use of JDK classes Tomcat 7 or 6
From: ANALIA DE PEDRO SANTAMARIA [mailto:100074...@alumnos.uc3m.es] Subject: Re: Restrict the use of JDK classes Tomcat 7 or 6 I understand it if you can't answer my questions. Your question was already answered by Aurélien: use a SecurityManager. http://tomcat.apache.org/tomcat-7.0-doc/security-manager-howto.html - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Restrict the use of JDK classes Tomcat 7 or 6
Hi, On Tue, Oct 22, 2013 at 11:11 PM, ANALIA DE PEDRO SANTAMARIA 100074...@alumnos.uc3m.es wrote: I'm sorry about the misunderstanding. My question isn't a homework question. I'm working in my Final Project and I have some doubts about Tomcat, that I need to solve in order to develop it properly. I had searched a lot before I wrote to the mailing list. I'm sorry if you have understood that I'm a lazy person who wants you to solve my work. I think it's okay to ask questions on the mailing lists and you already got an answer in less than 15 mins! :) However, my work is related to the university (the reason why I have wrote with my student account), so I understand it if you can't answer my questions. Thank you. 2013/10/22 André Warnier a...@ice-sa.com Caldarale, Charles R wrote: From: cjder...@gmail.com [mailto:cjder...@gmail.com] On Behalf Of chris derham Subject: Re: Restrict the use of JDK classes Tomcat 7 or 6 Do the mailing list rules state home work questions are in or out of scope? To quote from How To Ask Questions The Smart Way ( http://www.catb.org/~esr/**faqs/smart-questions.html http://www.catb.org/~esr/faqs/smart-questions.html), which is linked to from the Tomcat mailing lists page: Don't post homework questions Now come on guys. UCM3 is the Universidad Carlos III of Madrid, Spain. So we have an OP here who attends a Spanish university, is learning Java, has a genuine Spanish name, yet phrases questions correctly and politely in English, on a forum which the OP found and which is at least related to the subject. You do not have to solve her homework. But a bit of slack, a pointer or two from real Java experts ? And the fact that I am currently in Valencia, a mere 3 hours from Madrid, has absolutely nothing to do with any of this. --**--**- To unsubscribe, e-mail: users-unsubscribe@tomcat.**apache.org users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org -- Isuru Perera Senior Software Engineer | WSO2, Inc. | http://wso2.com/ Lean . Enterprise . Middleware about.me/chrishantha
RE: Connection pool statistics
Chris -- -Original Message- From: Christopher Schultz [mailto:ch...@christopherschultz.net] Sent: Tuesday, October 22, 2013 10:38 AM To: Tomcat Users List Subject: Re: Connection pool statistics -BEGIN PGP SIGNED MESSAGE- Hash: SHA256 Jeffrey, On 10/22/13 9:47 AM, Jeffrey Janner wrote: -Original Message- From: Anu Prab [mailto:anupr...@gmail.com] Sent: Tuesday, October 22, 2013 4:36 AM To: Tomcat Users List Subject: Reg: Connection pool statistics Hi, Is it possible to get the statistics of a connection pool programmatically, say when was it created? The maximum time taken by a query which used the connection from this connection pool? Statistics like these... -Anu Check the documentation and/or JavaDocs for the library you are using for the connection pool. It is totally dependent on the software you've decided to use for creating/managing the pool. For example, I'm pretty sure that there is a management class for Oracle's Universal Connection Pool (UCP). ...or hook-up a JMX browser to Tomcat and see what you can find... - -chris Yes, but the OP asked specifically for a way to do it programmatically, so I didn't think he was look for the standard Use jconsole or jvisualvm answer. And even if you can find out what is advertised, you'll still need to look into the docs to determine what those values mean in a lot of cases. Jeff
Embedding Tomcat
Hello, To scratch an itch I've been working on an alternative means to embed Tomcat: https://github.com/pidster-dot-org/embed-apache-tomcat There's a core utility for embedding Tomcat[1] and a JUnit Rule[2] for testing that uses it, e.g. 1. https://github.com/pidster-dot-org/embed-apache-tomcat/blob/master/embed-apache-tomcat-core/src/test/java/org/pidster/tomcat/embed/TomcatSimpleTest.java 2. https://github.com/pidster-dot-org/embed-apache-tomcat/blob/master/embed-apache-tomcat-test/src/test/java/org/pidster/tomcat/embed/junit/TomcatServerRuleTest.java I've snuck it into Maven Central here: http://search.maven.org/#search%7Cga%7C1%7Corg.pidster I'd be interested to hear feedback from the list. p
Re: Restrict the use of JDK classes Tomcat 7 or 6
-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 Analia, On 10/22/13 1:41 PM, ANALIA DE PEDRO SANTAMARIA wrote: I'm sorry about the misunderstanding. My question isn't a homework question. I'm working in my Final Project and I have some doubts about Tomcat, that I need to solve in order to develop it properly. Perhaps I didn't understand the original question: what are you trying to avoid? Do you want to prevent a web application from loading a different version of java.lang.String, or are you trying to protect something else? I think the initial resistance to answering your original question was because it was so open-ended. Perhaps if you add some more details (e.g. what is happening, why it is unexpected, what you want to happen instead) we might be able to help. - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.14 (Darwin) Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBCAAGBQJSZwFxAAoJEBzwKT+lPKRYeFYP/2/k5A3OB8CbbHHivXh/HvR5 KQUvE8Ez9dqACKSnTs94k0lYY7x+1EwVtUuyi5huTfh7Yo3vV54qOCpLzdmGDGSP NZABnifDcjSB5HxdiadNoAN36cSsE08Poc7sh3m9Mg752mfDRaYtLS4JSWydhXGC MI/Th2Hc4/1jJo418hm7YH6RiWvUX8EKWG/e4UE0HhHzN1V9Q2kq2j1TQ7ixBFgN MJBGHFWOewTEd+9/iPkycF5hkPR7by7RjJBWx3eY3IXD+RTmt/7cn4gRxZoQtUa+ +/nPMGdDNfX+LN5zd/qQo7qjJv7TVdnhJVyh2FwWbZYt6fJowj9xaApAvT2qFLCb ZJ+UrD2zhDao5J3blM/KsEklWdk72ShpiIBjBM9PC5og/obGTEfzOfbm5NSpw+8p s//UKZ+xOyqmiKTKN5rXxBByPDJiR0ZWHIxBbkFwX20jzpFm3acu4m11dva8F9Zh vRZ62JSRVrFckRS+286FU6TMPp2WBk3sjbMsI3EFpYtiAvg+TehPjEUkOmuz5dxR J77s6vfFus4salL2OcFNNZ9SQsHEgCmqJhXwMS0OQdV2XWRuQMrEI5ruiSYnzQT2 CNmihUVeEiDJKk1g4umwhU8Gq5dq/QHk3vv/C1bq8uQ/Y3e5BnGOy+C8zeusltji ip2Ps0GVfiViTLavhPQ+ =Vv6G -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Connection pool statistics
-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 Jeffrey, On 10/22/13 5:40 PM, Jeffrey Janner wrote: Chris -- -Original Message- From: Christopher Schultz [mailto:ch...@christopherschultz.net] Sent: Tuesday, October 22, 2013 10:38 AM To: Tomcat Users List Subject: Re: Connection pool statistics -BEGIN PGP SIGNED MESSAGE- Hash: SHA256 Jeffrey, On 10/22/13 9:47 AM, Jeffrey Janner wrote: -Original Message- From: Anu Prab [mailto:anupr...@gmail.com] Sent: Tuesday, October 22, 2013 4:36 AM To: Tomcat Users List Subject: Reg: Connection pool statistics Hi, Is it possible to get the statistics of a connection pool programmatically, say when was it created? The maximum time taken by a query which used the connection from this connection pool? Statistics like these... -Anu Check the documentation and/or JavaDocs for the library you are using for the connection pool. It is totally dependent on the software you've decided to use for creating/managing the pool. For example, I'm pretty sure that there is a management class for Oracle's Universal Connection Pool (UCP). ...or hook-up a JMX browser to Tomcat and see what you can find... - -chris Yes, but the OP asked specifically for a way to do it programmatically, so I didn't think he was look for the standard Use jconsole or jvisualvm answer. And even if you can find out what is advertised, you'll still need to look into the docs to determine what those values mean in a lot of cases. Well, if you know the JMX bean (by using JVisualVM to find it, for instance), you can certainly grab a hold of the bean at runtime and query it all you want programmatically. ;) - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.14 (Darwin) Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBCAAGBQJSZwGzAAoJEBzwKT+lPKRYNXEP/37ztfW5eRu5dvKs2U6BPtC4 TxeRV30X7zrK6ypPGjqMy+JvPSJXsSgD8x1tjkoKVHgKvDqxCE2jDwBqfJUpIiA7 7b5oruUrCijhpOuSN4zHsLFIlt9K1V2a7sc77t9NcFXmdLKbgIBMgI3O3Gzdwb7v Y56TxI2IuI1vB80FcEefSJG1N7SJj3iLfrgV41lVoJECprVUJnXN4BRrFa+q40/E 8vMYJ64Mspr3tHSBfySksCcNzn4YQ9WlIRSE0O5KoaUahKtJRqkwBf746PmWgChM m0BzEeexKZHI4+B8plXVi+jRouhVxhHSUf75Wg2LCGDEHJIvYEYuq4Axi2QgcOIb jjnEqiy5dMJ8oYvKKUXgVRDLWrHzyBVQkdBc8mJwMxPdmxbH6U9KSL/9gjFOzuA1 NIYoguBeujQmol4sG0tTesK/BBfj7vGzYX40dFhumw/85HPHqfBdNGEMae8xLsSy kXVM2hPIaYd5DRY4KkXVJeVo4sS8CMn0dnqz4XsnQ07FOLJqNaaqs9/qrjdNexrT COk6obTBGGUE4DXNUZ/gAHdWgKZgAydB2UlCi2YsY+zbnZotAqJjG9+8RX9MZesi n2dgctl5NtGPqPrOqU8xVxIVtCnlI0he5EOCw4oCXInsRgKwlOLbGjBEFI1aO6mf EIxqbKc60Vns/AKvEQeq =0yuR -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Servlet init method called multiple times
The init() method of all of my servlets is being called every 10 seconds or so. I verified this by adding a System.out to the init() methods of my servlets. However, the server is not restarting- just init gets recalled, even with no load on the box at all. I have no idea where to begin debugging this, but it does appear to be affecting performance. The API states The servlet container calls the init method exactly once after instantiating the servlet. I added an instance and static variable to the servlet, to see whether the init method was being called multiple times on the same instance or if new instances were being created. Initialized: 1 times (local), 28 total (static); Thead=http-127.0.0.1-51443-1 Time: Tue Oct 22 18:40:36 EDT 2013 Initialized: 1 times (local), 29 total (static); Thead=http-127.0.0.1-51443-1 Time: Tue Oct 22 18:40:41 EDT 2013 Initialized: 1 times (local), 30 total (static); Thead=http-127.0.0.1-51443-1 Time: Tue Oct 22 18:40:46 EDT 2013 Initialized: 1 times (local), 31 total (static); Thead=http-127.0.0.1-51443-1 Time: Tue Oct 22 18:40:51 EDT 2013 Obviously it is happening every 5 seconds, but WHAT is happening? Tomcat version: Apache Tomcat/6.0.35 OS: Linux version 2.6.18-194.11.3.el5 Richard Pierce | Software Architect Empowered Benefits rpie...@empoweredbenefits.commailto:rpie...@empoweredbenefits.com
Re: Servlet init method called multiple times
Richard Pierce wrote: The init() method of all of my servlets is being called every 10 seconds or so. I verified this by adding a System.out to the init() methods of my servlets. However, the server is not restarting- just init gets recalled, even with no load on the box at all. I have no idea where to begin debugging this, but it does appear to be affecting performance. The API states The servlet container calls the init method exactly once after instantiating the servlet. I added an instance and static variable to the servlet, to see whether the init method was being called multiple times on the same instance or if new instances were being created. Initialized: 1 times (local), 28 total (static); Thead=http-127.0.0.1-51443-1 Time: Tue Oct 22 18:40:36 EDT 2013 Initialized: 1 times (local), 29 total (static); Thead=http-127.0.0.1-51443-1 Time: Tue Oct 22 18:40:41 EDT 2013 Initialized: 1 times (local), 30 total (static); Thead=http-127.0.0.1-51443-1 Time: Tue Oct 22 18:40:46 EDT 2013 Initialized: 1 times (local), 31 total (static); Thead=http-127.0.0.1-51443-1 Time: Tue Oct 22 18:40:51 EDT 2013 Obviously it is happening every 5 seconds, but WHAT is happening? Tomcat version: Apache Tomcat/6.0.35 OS: Linux version 2.6.18-194.11.3.el5 Hi. 1) anything noteworthy mentioned in the Tomcat logs ? 2) can you paste your conf/server.xml here ? (confidential info removed) - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Servlet init method called multiple times
Hey Andre, thanks for any help you can provide. Nothing in the tomcat logs, just server startup spam and then the log lines from the init methods server.xml: ?xml version='1.0' encoding='utf-8'? Server port=8006 shutdown=SHUTDOWN !--APR library loader. Documentation at /docs/apr.html -- Listener className=org.apache.catalina.core.AprLifecycleListener SSLEngine=on / !--Initialize Jasper prior to webapps are loaded. Documentation at /docs/jasper-howto.html -- Listener className=org.apache.catalina.core.JasperListener / !-- Prevent memory leaks due to use of particular java/javax APIs-- Listener className=org.apache.catalina.core.JreMemoryLeakPreventionListener / !-- JMX Support for the Tomcat server. Documentation at /docs/non-existent.html -- Listener className=org.apache.catalina.mbeans.ServerLifecycleListener / Listener className=org.apache.catalina.mbeans.GlobalResourcesLifecycleListener / GlobalNamingResources Resource name=UserDatabase auth=Container type=org.apache.catalina.UserDatabase description=User database that can be updated and saved factory=org.apache.catalina.users.MemoryUserDatabaseFactory pathname=conf/tomcat-users.xml / /GlobalNamingResources Service name=Catalina Connector port=8082 maxHttpHeaderSize=8192 maxThreads=1500 minSpareThreads=25 maxSpareThreads=75 minProcessors=5 maxProcessors=200 enableLookups=false redirectPort=8443 acceptCount=100 connectionTimeout=3000 disableUploadTimeout=true server=Apache address=127.0.01 / !-- Define an AJP 1.3 Connector on port 8009 -- Connector port=8009 enableLookups=false protocol=AJP/1.3 redirectPort=8443 address=127.0.01/ Engine name=Catalina defaultHost=localhost jvmRoute=web04_EB Realm className=org.apache.catalina.realm.UserDatabaseRealm resourceName=UserDatabase/ Host name=localhost appBase=webapps unpackWARs=true autoDeploy=true xmlValidation=false xmlNamespaceAware=false /Host /Engine /Service /Server On 10/22/13 7:42 PM, André Warnier a...@ice-sa.com wrote: Hi. 1) anything noteworthy mentioned in the Tomcat logs ? 2) can you paste your conf/server.xml here ? (confidential info removed) - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
java.net.SocketException: Permission denied: connect, when running Tomcat 7 as a windows service
Hi there, I'm receiving the following exception: java.net.SocketException: Permission denied: connect when instantiating a Socket from a servlet: final Socket smtpSocket = new Socket(mailTransportHost, mailTransportPort); This application was running as a service under Windows Server 3003 R2 32-bits. After migrating it to Windows Server 2008 R2 64-bit, I cannot longer establish connection with the smtp server. This only happen when running Tomcat as a service. Running as a standalone (starting it up using startup.bat) works fine. No exception instantiating Socket, emails are sent. Environment: - Windows Server 2008 R2 64-bit - Tomcat 7.0.39 - jdk1.6.0_33-x64 Any help would be much appreciated
Re: Multi-URL Access 1 Webapp
I didn't know you were running a 3rd-party application. Do you need
the application to behave differently given a particular client? If
not, there's nothing to do. If so, you probably need to ask the
Alfresco folks how to do that. I personally know nothing about
Alfresco, though there may be some folks on the list who do and might
reply here.
I need to revisit this issue. Here is my apache vhost:
VirtualHost *:80
ServerName share.*
#This rewrites https://share.anydomain.tld to our alfresco server
RewriteCond %{HTTP_HOST} ^share\.
RewriteCond %{HTTPS} on
RewriteRule ^/(.*) http://192.168.123.3:8080/share/$1 [P]
RedirectMatch ^/$ /share/
/VirtualHost
This lands on the the apache part not the tomact part (both apache and tomcat
are the same server). We need http://share.*.* to land on the tomcat web app.
Any advise?
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RE: Multi-URL Access 1 Webapp
Hi Chris,
I didn't know you were running a 3rd-party application. Do you need
the application to behave differently given a particular client? If
not, there's nothing to do. If so, you probably need to ask the
Alfresco folks how to do that. I personally know nothing about
Alfresco, though there may be some folks on the list who do and might
reply here.
I need to revisit this issue. Here is my apache vhost:
VirtualHost *:80
ServerName share.*
You probably want to be using ServerAlias here, iirc..
#This rewrites https://share.anydomain.tld to our alfresco server
RewriteCond %{HTTP_HOST} ^share\.
RewriteCond %{HTTPS} on
Okay, I'll take a bite at the obvious. Your vhost is running on *:80, and your
mod_rewrite condition only triggers for https; is your httpd actually serving
https on port 80?
RewriteRule ^/(.*) http://192.168.123.3:8080/share/$1 [P]
RedirectMatch ^/$ /share/
I sort of doubt that this combination of rewrites and redirects is going to do
what you want. If the RedirectMatch fires (I'm not positive it would), it
would send a 302 to /share/, which would then get proxied to /share/share/ on
your app server. (This is the type of setup I typically find mod_proxy much
easier to work with vs mod_redirect, but this is all OT for this list..)
Cheers,
Matt
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