TT#58562 dialplan: add reload_delta parameter

Backported from upstream commit 926a97f4

Change-Id: I8b594b0ddbb5143016d6e917e025d357d62c2d77

debian/patches/series

@@ -50,3 +50,4 @@ upstream/topos_execute_event_route_topos_sending.patch
 sipwise/rtpengine-tcp-forwarding.patch
 sipwise/rtpengine-play-media.patch
 sipwise/registrar_add_path.patch
+upstream/limit_the_execution_of_dialplan_reload.patch

debian/patches/upstream/limit_the_execution_of_dialplan_reload.patch

@@ -0,0 +1,94 @@
+From 926a97f4eb741401b193fb711e6c439555c646ab Mon Sep 17 00:00:00 2001
+From: Marco Capetta <mcapetta@sipwise.com>
+Date: Mon, 6 May 2019 11:07:44 +0200
+Subject: [PATCH] dialplan: add reload_delta parameter
+
+- make the rate limit of maximum allowed dialplan reload configurable
+using the new 'reload_delta' paramenter.
+---
+
+--- a/src/modules/dialplan/dialplan.c
++++ b/src/modules/dialplan/dialplan.c
+@@ -87,6 +87,7 @@ dp_param_p default_par2 = NULL;
+ int dp_fetch_rows = 1000;
+ int dp_match_dynamic = 0;
+ int dp_append_branch = 1;
++int dp_reload_delta = 5;
+ 
+ static time_t *dp_rpc_reload_time = NULL;
+ 
+@@ -105,6 +106,7 @@ static param_export_t mod_params[]={
+ 	{ "fetch_rows",		PARAM_INT,	&dp_fetch_rows },
+ 	{ "match_dynamic",	PARAM_INT,	&dp_match_dynamic },
+ 	{ "append_branch",	PARAM_INT,	&dp_append_branch },
++	{ "reload_delta",	PARAM_INT,	&dp_reload_delta },
+ 	{0,0,0}
+ };
+ 
+@@ -184,6 +186,9 @@ static int mod_init(void)
+ 	if(dp_fetch_rows<=0)
+ 		dp_fetch_rows = 1000;
+ 
++	if(dp_reload_delta<0)
++		dp_reload_delta = 5;
++
+ 	if(init_data() != 0) {
+ 		LM_ERR("could not initialize data\n");
+ 		return -1;
+@@ -621,7 +626,7 @@ static void dialplan_rpc_reload(rpc_t* r
+ 		rpc->fault(ctx, 500, "Not ready for reload");
+ 		return;
+ 	}
+-	if(*dp_rpc_reload_time!=0 && *dp_rpc_reload_time > time(NULL) - 5) {
++	if(*dp_rpc_reload_time!=0 && *dp_rpc_reload_time > time(NULL) - dp_reload_delta) {
+ 		LM_ERR("ongoing reload\n");
+ 		rpc->fault(ctx, 500, "ongoing reload");
+ 		return;
+--- a/src/modules/dialplan/doc/dialplan_admin.xml
++++ b/src/modules/dialplan/doc/dialplan_admin.xml
+@@ -410,6 +410,33 @@ modparam("dialplan", "append_branch", 0)
+ 		</example>
+ 	</section>
+ 
++	<section id="dialplan.p.reload_delta">
++		<title><varname>reload_delta</varname> (int)</title>
++		<para>
++		The number of seconds that have to be waited before executing a new reload
++		of dialplan rules. By default there is a rate limiting of maximum one reload
++		in five seconds.
++		</para>
++		<para>
++		If set to 0, no rate limit is configured. Note carefully: use this configuration
++		only in tests environments because executing two dialplan reloads at the same
++		time can cause to kamailio to crash.
++		</para>
++		<para>
++		<emphasis>
++			Default value is <quote>5</quote>.
++		</emphasis>
++		</para>
++		<example>
++		<title>Set <varname>reload_delta</varname> parameter</title>
++		<programlisting format="linespecific">
++...
++modparam("dialplan", "reload_delta", 1)
++...
++		</programlisting>
++		</example>
++	</section>
++
+ 	</section>
+ 
+ 
+@@ -620,8 +647,9 @@ xlog("translated to var $var(y) \n");
+ 		<function moreinfo="none">dp_reload()</function>
+ 		</title>
+ 		<para>
+-		Reload the translation rules from the database. Note that there is
+-		a rate limiting of maximum one reload in five seconds.
++		Reload the translation rules from the database. Note that there is a
++		rate limiting defined by 'reload_delta' paramenter. By default is allowed
++		maximum one reload in five seconds.
+ 		</para>
+ 		<para>
+ 		Name: <emphasis>dp_reload</emphasis>