On 2/11/2020 4:32 PM, Christopher Schultz wrote:
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Jerry,
On 2/11/20 3:11 PM, Jerry Malcolm wrote:
I need some advice. I need to maintain a set of long-running
threads. When a request comes in, I need to determine if I have a
thread started for a particular id found in the request. So I need
to have a hashmap of threads keyed by the ids. That part is simple
enough. But I'm struggling with where to keep that hashmap object
so that it is available to all incoming requests (any session).
This object should persistently remain as long as Tomcat is active.
It must be scoped to the virtual host and only needs to be
available in one webapp context within that host. Suggestions on
how to proceed will be greatly appreciated.
Can you give more details?
- - Does this HAVE TO remain available even when no web applications are
deployed -- particularly the one9s0 which established the registry to
begin with?
It only needs to be available while the particular web app is running.
But the web app should start when TC boots and remain running until TC
stops.
- - Does this HAVE TO be limited to a single web app? Or is it okay to
have separate thread-registries in each web application where this
will be used?
It needs to be one global registry for the entire virtual host.
- - Does this HAVE TO be shared between all the web applications
deployed within a VirtualHost?
I'm pretty sure I can keep it all contained within one web app in the host.
- - Do you need to be able to actually touch the java.lang.Thread
object, or do you just need to be able to determine whether a
particular id has a thread running for it?
I'm going to need to communicate a little bit with the threads during
processing of requests. But I could use a dropbox/queue approach for
communication if necessary.
- -chris
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On 2/11/2020 4:32 PM, Christopher Schultz wrote:
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
Jerry,
On 2/11/20 3:11 PM, Jerry Malcolm wrote:
I need some advice. I need to maintain a set of long-running
threads. When a request comes in, I need to determine if I have a
thread started for a particular id found in the request. So I need
to have a hashmap of threads keyed by the ids. That part is simple
enough. But I'm struggling with where to keep that hashmap object
so that it is available to all incoming requests (any session).
This object should persistently remain as long as Tomcat is active.
It must be scoped to the virtual host and only needs to be
available in one webapp context within that host. Suggestions on
how to proceed will be greatly appreciated.
Can you give more details?
- - Does this HAVE TO remain available even when no web applications are
deployed -- particularly the one9s0 which established the registry to
begin with?
- - Does this HAVE TO be limited to a single web app? Or is it okay to
have separate thread-registries in each web application where this
will be used?
- - Does this HAVE TO be shared between all the web applications
deployed within a VirtualHost?
- - Do you need to be able to actually touch the java.lang.Thread
object, or do you just need to be able to determine whether a
particular id has a thread running for it?
- -chris
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