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292 lines
9.4 KiB
292 lines
9.4 KiB
######## Generic Hash Table container in shared memory ########
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modparam("htable", "htable", "failover=>size=16;autoexpire=120")
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#!trydef KZ_DISPATCHER_PROBE_MODE 1
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#!trydef DISPATCHER_ADD_SERVERS 1
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#!trydef DISPATCHER_ALG 0
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#!trydef KZ_DISPATCHER_ADD_FLAGS 10
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kazoo.dispatcher_auto_add = DISPATCHER_ADD_SERVERS descr "adds media servers reported by ecallmgr"
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kazoo.dispatcher_algorithm = DISPATCHER_ALG descr "dispatcher algorithm to use"
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####### Dispatcher module ########
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loadmodule "dispatcher.so"
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modparam("dispatcher", "db_url", "KAZOO_DB_URL")
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modparam("dispatcher", "flags", 2)
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modparam("dispatcher", "use_default", 0)
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modparam("dispatcher", "force_dst", 1)
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modparam("dispatcher", "dst_avp", "$avp(ds_dst)")
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modparam("dispatcher", "attrs_avp", "$avp(ds_attrs)")
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modparam("dispatcher", "grp_avp", "$avp(ds_grp)")
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modparam("dispatcher", "cnt_avp", "$avp(ds_cnt)")
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modparam("dispatcher", "hash_pvar", "$avp(ds_grp)")
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modparam("dispatcher", "setid_pvname", "$var(setid)")
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modparam("dispatcher", "ds_ping_method", "OPTIONS")
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modparam("dispatcher", "ds_ping_interval", 10)
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modparam("dispatcher", "ds_probing_threshold", 3)
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modparam("dispatcher", "ds_probing_mode", KZ_DISPATCHER_PROBE_MODE)
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modparam("dispatcher", "ds_ping_reply_codes", "501,403,404,400,200")
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modparam("dispatcher", "ds_ping_from", "sip:sipcheck@MY_HOSTNAME")
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#!import_file "dispatcher-network-params.cfg"
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## Dispatcher Groups:
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## 1 - Primary media servers
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## 2 - Backup media servers
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## 3 - Alternate media server IPs (used only for classification)
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## 10 - Presence servers (if not locally handled)
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## 20 - Registrar servers (if not locally handled)
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####### RTIMER module for dispatcher reload ##########
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#!ifndef RTIMER_LOADED
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loadmodule "rtimer.so"
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#!trydef RTIMER_LOADED
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#!endif
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modparam("rtimer", "timer", "name=dispatcher_reload;interval=20;mode=1;")
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modparam("rtimer", "exec", "timer=dispatcher_reload;route=DISPATCHER_RELOAD")
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####### Dispatcher Logic ########
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route[DISPATCHER_CLASSIFY_SOURCE]
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{
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#!import_file "dispatcher-network-classify.cfg"
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if (is_myself("$ou")) {
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xlog("L_INFO", "$ci|log|original R-URI ($ou) is this proxy, treating as external sources\n");
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} else if (
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ds_is_from_list(1, 3) ||
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ds_is_from_list(2, 3) ||
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ds_is_from_list(3, 3) ||
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ds_is_from_list(10, 3) ||
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ds_is_from_list(20, 3)
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) {
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xlog("L_INFO", "$ci|log|originated from internal sources\n");
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setflag(FLAG_INTERNALLY_SOURCED);
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} else {
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xlog("L_INFO", "$ci|log|originated from external sources\n");
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}
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}
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# Take the routes from dispatcher - hash over callid
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# If prefered route defined, reorder the destionations
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route[DISPATCHER_FIND_ROUTES]
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{
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if ($sht(failover=>$ci::current) != $null) {
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$du = $sht(failover=>$ci::current);
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return;
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}
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$var(ds_primary_group) = 1;
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$var(ds_backup_group) = 2;
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#!ifndef PRESENCE_ROLE
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if (is_method("SUBSCRIBE")) {
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$var(ds_primary_group) = 10;
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$var(ds_backup_group) = 11;
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}
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#!endif
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#!ifndef REGISTRAR_ROLE
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if (is_method("REGISTER")) {
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$var(ds_primary_group) = 20;
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$var(ds_backup_group) = 21;
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}
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#!endif
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#!ifdef FAST_PICKUP_ROLE
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route(FAST_PICKUP_ATTEMPT);
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#!endif
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#!import_file "dispatcher-network-find.cfg"
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$var(ds_group) = $var(ds_primary_group);
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if (!ds_select_dst("$var(ds_primary_group)", "$sel(cfg_get.kazoo.dispatcher_algorithm)") || $(avp(ds_dst)[0]) == $null) {
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# we selected from primary group, try again in backup group
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if (!ds_select_dst("$var(ds_backup_group)", "$sel(cfg_get.kazoo.dispatcher_algorithm)") || $(avp(ds_dst)[0]) == $null) {
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xlog("L_WARN", "$ci|end|no servers available in primary or backup group\n");
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sl_send_reply("480", "All servers busy");
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exit;
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} else {
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$var(ds_group) = $var(ds_backup_group);
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}
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}
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$var(user_source) = $(ct{tobody.user}) + "@" + $si + ":" + $sp;
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$var(redirect) = @from.uri.user + "@" + @from.uri.host + "->"
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+ @ruri.user + "@" + @ruri.host;
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if ($sht(redirects=>$var(redirect)) != $null) {
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$var(prefered_route) = $sht(redirects=>$var(redirect));
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xlog("L_INFO", "$ci|log|found redirect for $var(redirect)\n");
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if (route(DISPATCHER_REORDER_ROUTES)) {
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$avp(AVP_REDIRECT_KEY) = $var(redirect);
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}
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} else if ($sht(associations=>$var(user_source)) != $null) {
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$var(prefered_route) = $sht(associations=>$var(user_source));
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xlog("L_INFO", "$ci|log|found association for contact uri $var(user_source)\n");
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if (!route(DISPATCHER_REORDER_ROUTES)) {
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$sht(associations=>$var(association)) = $null;
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}
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}
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}
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route[DISPATCHER_REORDER_ROUTES]
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{
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$var(i) = 0;
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$var(found) = 0;
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while($(avp(ds_dst)[$var(i)]) != $null) {
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if($(avp(ds_dst)[$var(i)]) != $var(prefered_route)) {
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$avp(tmp_ds_dst) = $(avp(ds_dst)[$var(i)]);
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} else {
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$var(found) = 1;
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}
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$var(i) = $var(i) + 1;
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}
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if (!$var(found) && $var(ds_group) == $var(ds_primary_group) && ds_select_dst("$var(ds_backup_group)", "0")) {
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$var(i) = 0;
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while($(avp(ds_dst)[$var(i)]) != $null) {
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if($(avp(ds_dst)[$var(i)]) == $var(prefered_route)) {
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xlog("L_INFO", "$ci|log|found associated media server in backup list\n");
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$var(found) = 1;
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break;
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}
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$var(i) = $var(i) + 1;
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}
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}
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if ($var(found)) {
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xlog("L_INFO", "$ci|log|re-ordering the dispatcher list to maintain association with $var(prefered_route)\n");
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$(avp(ds_dst)[*]) = $null;
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$var(i) = 0;
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while($(avp(tmp_ds_dst)[$var(i)]) != $null) {
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$avp(ds_dst) = $(avp(tmp_ds_dst)[$var(i)]);
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$var(i) = $var(i) + 1;
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}
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$avp(ds_dst) = $var(prefered_route);
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$du = $var(prefered_route);
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$(avp(tmp_ds_dst)[*]) = $null;
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} else {
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xlog("L_INFO", "$ci|log|associated media server $var(prefered_route) is inactive, moving to $rd\n");
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return -1;
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}
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return 1;
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}
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route[DISPATCHER_NEXT_ROUTE]
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{
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$var(failover_count) = $sht(failover=>$ci::counts);
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if ($sht(failover=>$ci::counts) == $null) {
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$var(i) = 0;
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while($(avp(ds_dst)[$var(i)]) != $null) {
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$sht(failover=>$ci[$var(i)]) = $(avp(ds_dst)[$var(i)]);
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$var(i) = $var(i) + 1;
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if ($var(i) >= 3) {
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break;
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}
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}
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$sht(failover=>$ci::counts) = $var(i);
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$var(failover_count) = $var(i);
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}
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# try to find a new media server to send the call to
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if ($var(failover_count) > 1) {
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$var(failover_count) = $var(failover_count) - 1;
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$du = $sht(failover=>$ci[$var(failover_count)]);
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$sht(failover=>$ci::counts) = $var(failover_count);
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$sht(failover=>$ci::current) = $du;
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xlog("L_INFO", "$ci|log|remaining failed retry attempts: $var(failover_count)\n");
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xlog("L_INFO", "$ci|log|routing call to next media server $du\n");
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setflag(FLAG_SKIP_NAT_CORRECTION);
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# reset the final reply timer
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$avp(final_reply_timer) = 3;
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t_on_reply("INTERNAL_REPLY");
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t_on_failure("INTERNAL_FAULT");
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# relay the request to the new media server
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route(EXTERNAL_TO_INTERNAL_RELAY);
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exit();
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}
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}
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event_route[dispatcher:dst-down]
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{
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xlog("L_ERR", "Destination down: $ru\n");
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}
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event_route[dispatcher:dst-up]
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{
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xlog("L_WARNING", "Destination up: $ru\n");
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}
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route[DISPATCHER_CHECK_MEDIA_SERVER]
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{
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if($sel(cfg_get.kazoo.dispatcher_auto_add) == 1) {
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$var(SetId) = 1;
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if($var(Zone) != "MY_AMQP_ZONE") {
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$var(SetId) = 2;
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}
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$var(flags) = KZ_DISPATCHER_ADD_FLAGS;
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$var(attrs) = $_s(zone=$var(Zone);profile=$var(MediaProfile);idx=$(var(MediaUrl){s.corehash, MEDIA_SERVERS_HASH_SIZE});node=$var(MediaName));
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#!import_file "dispatcher-custom-media-check.cfg"
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sql_query("exec", "KZQ_CHECK_MEDIA_SERVER_INSERT");
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if($sqlrows(exec) > 0) {
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$shv(dispatcher_reload) = 1;
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return 1;
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}
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}
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return 0;
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}
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route[DISPATCHER_RELOAD]
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{
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if($shv(dispatcher_reload) == 1) {
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xlog("L_WARNING", "reloading dispatcher table\n");
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ds_reload();
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};
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$shv(dispatcher_reload) = 0;
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}
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route[DISPATCHER_STATUS]
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{
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jsonrpc_exec('{"jsonrpc": "2.0", "method": "dispatcher.list", "id": 1}');
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$var(Sets) = $(jsonrpl(body){kz.json, result.NRSETS});
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$var(i) = 0;
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$var(ds_groups_json)="";
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$var(Sep1) = "";
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while($var(i) < $var(Sets)) {
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$var(Set) = $(jsonrpl(body){kz.json, result.RECORDS[$var(i)].SET});
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$var(SetCount) = $(var(Set){kz.json.count,TARGETS});
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$var(Sep2)="";
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$var(ds_group_json)="";
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$var(c) = 0;
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while($var(c) < $var(SetCount)) {
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$var(Dest) = $(var(Set){kz.json,TARGETS[$var(c)].DEST});
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$var(record) = $_s("$(var(Dest){kz.json,URI})" : {"destination" : "$(var(Dest){kz.json,URI})", "flags" : "$(var(Dest){kz.json,FLAGS})", "priority" : $(var(Dest){kz.json,PRIORITY}), "attrs" : "$(var(Dest){kz.json,ATTRS.BODY})"});
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$var(ds_group_json) = $var(ds_group_json) + $var(Sep2) + $var(record);
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$var(Sep2) = ",";
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$var(c) = $var(c) + 1;
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}
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$var(ds_groups_json) = $var(ds_groups_json) + $var(Sep1) + $_s("$(var(Set){kz.json,ID})" : { $var(ds_group_json) });
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$var(Sep1)=", ";
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$var(i) = $var(i) + 1;
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}
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}
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# vim: tabstop=4 softtabstop=4 shiftwidth=4 expandtab
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