On 01/04/2022 13:41, Jim Jagielski wrote:
It was added in anticipation of the capability to be folded in, and done so "now" so that it would;t require any API changes.

Unless it's actually breaking something, I'd vote to simply keep it

OK I will try to propose some code to create the balancers I am still stuck how to create the memory slots for the workers of the those dynamic balancers.


On Apr 1, 2022, at 3:42 AM, jean-frederic clere <jfcl...@gmail.com <mailto:jfcl...@gmail.com>> wrote:

On 01/04/2022 08:47, jean-frederic clere wrote:
On 31/03/2022 12:59, Ruediger Pluem wrote:


On 3/31/22 12:34 PM, Stefan Eissing wrote:


Am 31.03.2022 um 11:55 schrieb Ruediger Pluem <rpl...@apache.org <mailto:rpl...@apache.org>>:



On 3/31/22 11:11 AM, Ruediger Pluem wrote:


On 3/30/22 4:42 PM, jfcl...@apache.org <mailto:jfcl...@apache.org> wrote:
Author: jfclere
Date: Wed Mar 30 14:42:14 2022
New Revision: 1899390

URL: http://svn.apache.org/viewvc?rev=1899390&view=rev <http://svn.apache.org/viewvc?rev=1899390&view=rev>
Log:
Add WorkerBalancerGrowth. To allow creation of workers
to dynamically added balancers.

Modified:
httpd/httpd/trunk/CHANGES
httpd/httpd/trunk/modules/proxy/mod_proxy.c
httpd/httpd/trunk/modules/proxy/mod_proxy.h

Modified: httpd/httpd/trunk/CHANGES
URL: http://svn.apache.org/viewvc/httpd/httpd/trunk/CHANGES?rev=1899390&r1=1899389&r2=1899390&view=diff <http://svn.apache.org/viewvc/httpd/httpd/trunk/CHANGES?rev=1899390&r1=1899389&r2=1899390&view=diff>
==============================================================================
--- httpd/httpd/trunk/CHANGES [utf-8] (original)
+++ httpd/httpd/trunk/CHANGES [utf-8] Wed Mar 30 14:42:14 2022
@@ -1,6 +1,10 @@
-*- coding: utf-8 -*-
Changes with Apache 2.5.1

+ *) mod_proxy: Add WorkerBalancerGrowth to allow adding workers to
+ balancer created dynamically or via "empty" <Proxy balancer://../ <balancer://../>>
+ [Jean-Frederic Clere]

I am not sure why this is needed. You can already do this via

<Proxy balancer://somebalancer/ <balancer://somebalancer/> growth=10>
</Proxy>

Or

<Proxy balancer://somebalancer/ <balancer://somebalancer/>>
ProxySet growth=10
</Proxy>

FYI: Travis trunk also fails almost completely. Does not seem to accept a proxy configuration.

This is because the if

+  if (!ap_strchr_c(conf->p, ':'))
+  return apr_pstrcat(cmd->pool, thiscmd->name,
+  "> arguments are not supported for non url.",
+  NULL);

should not return with an error, but just encapsulate the remainder of the block. And I think the further
return apr_pstrcat are also wrong.

But as said I am not sure about the purpose at all as you can already do, what the patch should provide if I understand the patch
correctly.
The purpose was to be able to add a balancer in the balancer-manager handle but that needs to pre-create the mutex and the slots for the workers.
While looking to that I noted that:
<Proxy balancer://somebalancer/ <balancer://somebalancer/>>
</Proxy>
was doing nothing, the balancer is ignored, I should I revert the patch and add an error message if there is an empty entry like this one?

There is also the BalancerGrowth directive that does nothing else than creating a memory slot for balancers we never add/create in the balancer-manager, I am tempted to remove it...

Would it be better to add the missing logic? I have some pieces in mod_proxy_cluster (https://github.com/modcluster/mod_proxy_cluster <https://github.com/modcluster/mod_proxy_cluster>that could use the logic.

Regards

Rüdiger


--
Cheers

Jean-Frederic



--
Cheers

Jean-Frederic

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