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.
---
 src/modules/dialplan/dialplan.c             |  7 ++++-
 src/modules/dialplan/doc/dialplan_admin.xml | 32 +++++++++++++++++++--
 2 files changed, 36 insertions(+), 3 deletions(-)

diff --git a/src/modules/dialplan/dialplan.c b/src/modules/dialplan/dialplan.c
index d8685d52f2b..20b7744e219 100644
--- 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}
 };
 
@@ -182,6 +184,9 @@ 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;
@@ -619,7 +624,7 @@ static void dialplan_rpc_reload(rpc_t* rpc, void* ctx)
 		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;
diff --git a/src/modules/dialplan/doc/dialplan_admin.xml b/src/modules/dialplan/doc/dialplan_admin.xml
index 371120fac47..e524524fb8b 100644
--- 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>