[sr-dev] git:master: modules/drouting Improvement for do_routing in failure route

Module: sip-router Branch: master Commit: 0d8cec6b6cd9027ef7313608db7e27667643fdf6 URL: http://git.sip-router.org/cgi-bin/gitweb.cgi/sip-router/?a=commit;h=0d8cec6… Author: Anca Vamanu &lt;anca.vamanu(a)1and1.ro&gt; Committer: Anca Vamanu &lt;anca.vamanu(a)1and1.ro&gt; Date: Wed Mar 20 15:39:12 2013 +0200 modules/drouting Improvement for do_routing in failure route Improvement for sort_order 2 : if the failure groups have repeating gateways the module will take care internally not to try again a gateway that was already tried. --- modules/drouting/README | 37 ++++++++++++++++++------------ modules/drouting/doc/drouting_admin.xml | 15 ++++++++++++ modules/drouting/drouting.c | 38 +++++++++++++++++++++++++++++++ 3 files changed, 75 insertions(+), 15 deletions(-) diff --git a/modules/drouting/README b/modules/drouting/README index 5fee2f2..2977033 100644 --- a/modules/drouting/README +++ b/modules/drouting/README @@ -304,18 +304,18 @@ Chapter 1. Admin Guide draft 09): Table 1.4. Time recurrence attributes - Attribute Description - dastard Start of interval (RFC 2445 DATE-TIME) - duration Length of interval (RFC 2445 DURATION) - freq Frequency of recurrence (secondly,minutely,hourly, daily,weekly, - monthly, or yearly). - until bound of recurrence (RFC 2445 DATE-TIME) - interval How often the recurrence repeats - byday List of days of the week - bymonthday List of days of the month - byyearday List of days of the year - byweekno List of weeks of the year - bymonth List of months of the year + Attribute Description + dastard Start of interval (RFC 2445 DATE-TIME) + duration Length of interval (RFC 2445 DURATION) + freq Frequency of recurrence (secondly,minutely,hourly, daily,weekly, + monthly, or yearly). + until bound of recurrence (RFC 2445 DATE-TIME) + interval How often the recurrence repeats + byday List of days of the week + bymonthday List of days of the month + byyearday List of days of the year + byweekno List of weeks of the year + bymonth List of months of the year The value stored in database has the format of: <dtstart>|<duration>|<freq>|<until>|<interval>|<byday>|<bymonthday> |<byyearday>|<byweekno>|<bymonth> @@ -570,9 +570,16 @@ modparam("drouting", "drl_table", "my_gw_lists") destinations). Ex: 1,2;3,4,5;6 -> randomizer -> (A) 2,1;4,3,5;6 -> usage 2,1,4,3,5,6 (B) 1,2;3,5,4;6 -> usage 1,2,3,5,4,6 * 2 - from each destination group, only a single destination is - randomly selected; groups do maintain their order (as given); Ex: - 1,2;3,4,5;6 -> randomizer -> (A) 2;4;6 -> usage 2,4,6 (B) 1;5;6 -> - usage 1,5,6 + randomly selected; groups do maintain their order (as given); + Ex: 1,2;3,4,5;6 -> randomizer -> + (A) 2;4;6 -> usage 2,4,6 + (B) 1;5;6 -> usage 1,5,6 + It is ok to have repeating gateways in different groups. The module + will take care internally in case of failure not to choose a + gateway that was tried already. + Ex: 1,2,3; 1,2,3; 1,2,3 -> no gateway will be choosen twice. So in + case there are 2 failures, all the three gateways (1,2,3) will be + tried in a random order. Default value is “0”. diff --git a/modules/drouting/doc/drouting_admin.xml b/modules/drouting/doc/drouting_admin.xml index 3dbcdd9..7bde362 100644 --- a/modules/drouting/doc/drouting_admin.xml +++ b/modules/drouting/doc/drouting_admin.xml @@ -942,9 +942,24 @@ modparam("drouting", "drl_table", "my_gw_lists") <emphasis>2</emphasis> - from each destination group, only a single destination is randomly selected; groups do maintain their order (as given); + <para> Ex: 1,2;3,4,5;6 -> randomizer -> + </para> + <para> (A) 2;4;6 -> usage 2,4,6 + </para> + <para> (B) 1;5;6 -> usage 1,5,6 + </para> + <para> + It is ok to have repeating gateways in different groups. The module will + take care internally in case of failure not to choose a gateway that + was tried already. + </para> + <para> + Ex: 1,2,3; 1,2,3; 1,2,3 -> no gateway will be choosen twice. So in case there + are 2 failures, all the three gateways (1,2,3) will be tried in a random order. + </para> </listitem> </itemizedlist> </para> diff --git a/modules/drouting/drouting.c b/modules/drouting/drouting.c index 43fd73e..7289085 100644 --- a/modules/drouting/drouting.c +++ b/modules/drouting/drouting.c @@ -646,6 +646,20 @@ static int use_next_gw(struct sip_msg* msg) return 1; } +int dr_already_choosen(rt_info_t* rt_info, int* local_gwlist, int lgw_size, int check) +{ + int l; + + for ( l = 0; l<lgw_size; l++ ) { + if ( rt_info->pgwl[local_gwlist[l]].pgw == rt_info->pgwl[check].pgw ) { + LM_INFO("Gateway already choosen %.*s, local_gwlist[%d]=%d, %d\n", + rt_info->pgwl[check].pgw->ip.len, rt_info->pgwl[check].pgw->ip.s, l, local_gwlist[l], check); + return 1; + } + } + + return 0; +} static int do_routing(struct sip_msg* msg, dr_group_t *drg) { @@ -806,6 +820,30 @@ again: } } } + + if ( sort_order == 2 ) { + /* check not to use the same gateway as before */ + if ( t>1 ) { + /* check if all in the current set were already chosen */ + if (i-j <= t-1) { + for( l = j; l< i; l++) { + if ( ! dr_already_choosen(rt_info, local_gwlist, t-1, l) ) + break; + } + if ( l == i ) { + LM_INFO("All gateways in group from %d - %d were already used\n", j, i); + t--; /* jump over this group, nothing to choose here */ + j=i; continue; + } + } + while ( dr_already_choosen(rt_info, local_gwlist, t-1, local_gwlist[t-1]) ) { + local_gwlist[t-1] = j + rand()%(i-j); + } + } + LM_DBG("The %d gateway is %.*s [%d]\n", t, rt_info->pgwl[local_gwlist[t-1]].pgw->ip.len, + rt_info->pgwl[local_gwlist[t-1]].pgw->ip.s, local_gwlist[t-1]); + } + /* next group starts from i */ j=i; }