Re: SOLVED: Multi-threading 5.2 WO app as servlet or woapp doesn't work
Re: SOLVED: Multi-threading 5.2 WO app as servlet or woapp doesn't work
- Subject: Re: SOLVED: Multi-threading 5.2 WO app as servlet or woapp doesn't work
- From: Dov Rosenberg <email@hidden>
- Date: Fri, 14 Mar 2003 08:09:02 -0500
The problem we were dealing with was different than your test. Our
issue was that on a data entry form, the user has the option of
uploading a file that gets loaded to a FTP server. While that user was
uploading the file or executing a long running operation, could be
several seconds, all other users were locked out of doing anything.
Other browser sessions were completely blocked. Since we are running as
a servlet, we couldn't run multiple instances of the app and we didn't
have the WO Adaptor to do the load balancing. The problem also occurred
running the app as a WOApp. I'm not sure if the problem was more
related to opening a FTP connection holding up the request response
loop.
It was easy to reproduce - all we needed was 2 separate browser
sessions trying to do different things. The first operation started and
help up all other requests until it completed. Once we hardcoded the
AllowsConcurrentRequestHandling, things started acting properly again.
The properties file or command line setting did not affect the behavior.
Dov Rosenberg
On Friday, March 14, 2003, at 12:36 AM, Hsu wrote:
I tested on both OSX and Win2K, both on 5.2. Works fine.
Karl
On Wednesday, March 12, 2003, at 11:42 AM, Dov Rosenberg wrote:
I am on Win2K, WO 5.2
Dov Rosenberg
On Wednesday, March 12, 2003, at 02:04 PM, Hsu wrote:
I just tested this, and it appears to work fine.
public WOActionResults longAction() {
System.out.println("START LONG ACTION NOW");
WOResponse aResponse = new WOResponse();
aResponse.setContent("Looooong");
try {
Thread.sleep(5000);
} catch (Exception e) {}
System.out.println("END LONG ACTION NOW");
return aResponse;
}
public WOActionResults shortAction() {
System.out.println("START SHORT ACTION NOW");
WOResponse aResponse = new WOResponse();
aResponse.setContent("Shoooort");
System.out.println("END SHORT ACTION NOW");
return aResponse;
}
MTTest.woa:{58}> ./MTTest -WOAllowsConcurrentRequestHandling YES
...
java -XX:NewSize=2m -Xmx64m -Xms32m -DWORootDirectory="/System"
-DWOLocalRootDirectory="" -DWOUserDirectory="/Objects/MTTest.woa"
-DWOEnvClassPath="" -DWOApplicationClass=Application
-DWOPlatform=MacOS -Dcom.webobjects.pid=22702 -classpath
WOBootstrap.jar com.webobjects._bootstrap.WOBootstrap
-WOAllowsConcurrentRequestHandling YES
Generated classpath:
...
[2003-03-12 10:59:21 PST] <main>
WOAllowsConcurrentRequestHandling=true
...
[2003-03-12 10:59:21 PST] <main> ------------------------
...
Welcome to MTTest!
[2003-03-12 10:59:23 PST] <main> Waiting for requests...
START LONG ACTION NOW
START SHORT ACTION NOW
END SHORT ACTION NOW
END LONG ACTION NOW
curl "http://localhost:55555/cgi-bin/WebObjects/MTTest.woa/wa/long";
& ; sleep 1 ; curl
"http://localhost:55555/cgi-bin/WebObjects/MTTest.woa/wa/short"; &
Karl
On Wednesday, March 12, 2003, at 07:50 AM, Dov Rosenberg wrote:
Finally figured out the problem.
It seems that regardless of what is set in the Properties file or
on the URL, the WOAllowsConcurrentRequestHandling does not get set
at runtime. I'm not sure about the other parameters. I added a
method in the Application constructor to explicitly set the
parameter using
setAllowsConcurrentRequestHandling(true);
and everything started working again.
Thanks to everyone for the suggestions. I will submit this as a bug
to Apple.
Dov Rosenberg
Conviveon Corporation
_______________________________________________
WebObjects-dev mailing list
email@hidden
http://www.omnigroup.com/mailman/listinfo/webobjects-dev
--
You are truly human now. You can love, and fear, and forbid things
to be what they are and overact.
Homepage:
http://homepage.mac.com/khsu/index.html
_______________________________________________
WebObjects-dev mailing list
email@hidden
http://www.omnigroup.com/mailman/listinfo/webobjects-dev
--
"If you press the backspace key and anything else apart from the
character to the left of the cursor disappearing happens, you're using
a Unix"
Homepage:
http://homepage.mac.com/khsu/index.html
_______________________________________________
WebObjects-dev mailing list
email@hidden
http://www.omnigroup.com/mailman/listinfo/webobjects-dev
_______________________________________________
webobjects-dev mailing list | email@hidden
Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/webobjects-dev
Do not post admin requests to the list. They will be ignored.