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159 lines
6.1 KiB
159 lines
6.1 KiB
######## FAST PICKUP ROLE ########
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modparam("htable", "htable", "park=>size=16;autoexpire=600")
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modparam("htable", "htable", "fp=>size=8");
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kazoo.fast_pickup_cookies = KZ_FAST_PICKUP_COOKIES descr "maintains a hash table for correlating call-ids with media servers"
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kazoo.fast_pickup_realtime = KZ_FAST_PICKUP_REALTIME descr "queries channels api for realtime status of call-id"
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route[FAST_PICKUP_START]
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{
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$sht(fp=>count) = 0;
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}
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route[FAST_PICKUP_LOAD]
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{
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sht_reset("fp");
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#!ifndef KZ_USE_DISPATCHER_LIST
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xlog("L_INFO", "$ci|log|fast|initializing fastpick hash table from dispatcher\n");
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if (sql_xquery("exec", "select destination from dispatcher", "ra") == 1) {
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while($xavp(ra) != $null) {
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$var(host) = $(xavp(ra=>destination){uri.host});
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$var(port) = $(xavp(ra=>destination){uri.port});
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$var(destination) = $xavp(ra=>destination);
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$var(i) = 0;
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if(!is_ip("$var(host)")) {
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if(dns_query("$var(host)", "xyz")) {
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$var(destination) = $_s(sip:$dns(xyz=>addr[$var(i)]):$var(port));
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}
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}
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xlog("L_INFO", "$ci|log|fast|adding key $(var(destination){s.md5}) for $var(destination)\n");
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$sht(fp=>$(var(destination){s.md5})) = $var(destination);
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pv_unset("$xavp(ra)");
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}
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}
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#!else
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xlog("L_INFO", "$ci|log|fast|cannot initialize hash table from dispatcher. check KZ_USE_DISPATCHER_LIST option in local.cfg\n");
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#!endif
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}
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route[FAST_PICKUP_ATTEMPT]
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{
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if (!is_method("INVITE")) {
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return;
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}
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$var(replaced_call_id) = "none";
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if($hdr(Replaces)!= $null) {
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$var(replaced_call_id) = $(hdr(Replaces){s.select,0,;});
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}
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if($var(replaced_call_id) =~ "kfp+") {
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if($shtinc(fp=>count) == 1) {
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route(FAST_PICKUP_LOAD);
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}
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remove_hf_re("^Replaces");
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$var(PickupOptions) = $(var(replaced_call_id){re.subst,/^kfp\+(.{2})([^@]*)@(.*)/\1/}{s.decode.hexa});
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$var(md5) = $(var(replaced_call_id){re.subst,/^kfp\+(.{2})([^@]*)@(.*)/\2/});
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$var(replaced_call_id) = $(var(replaced_call_id){re.subst,/^kfp\+(.{2})([^@]*)@(.*)/\3/});
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if( $sht(fp=>$var(md5)) != $null) {
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route(FAST_PICKUP_OPTION);
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$du = $sht(fp=>$var(md5));
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append_hf("Replaces: $var(replaced_call_id)$var(Pickup)\r\n");
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xlog("L_INFO", "$ci|log|fast|found shortcut for call-id $var(replaced_call_id) , redirecting ($(ru{uri.user})) to $du\n");
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route(EXTERNAL_TO_INTERNAL_RELAY);
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exit();
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} else {
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$var(replaced_call_id) = "none";
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xlog("L_INFO", "$ci|log|fast|shortcut $var(md5) invalid in this server, using standard routing\n");
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}
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}
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if(@cfg_get.kazoo.fast_pickup_realtime == 1) {
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if($var(replaced_call_id) != "none") {
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xlog("L_INFO", "$ci|log|request has replaces call-id $var(replaced_call_id)\n");
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$var(amqp_payload_request) = '{"Event-Category" : "call_event" , "Event-Name" : "channel_status_req", "Call-ID" : "' + $var(replaced_call_id) + '", "Active-Only" : true }';
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$var(amqp_routing_key) = "call.status_req." + $(var(replaced_call_id){kz.encode});
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sl_send_reply("100", "locating your call");
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xlog("L_INFO", "$ci|log|querying cluster for the location of call-id $var(replaced_call_id)\n");
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if(kazoo_query("callevt", $var(amqp_routing_key), $var(amqp_payload_request))) {
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$du = $(kzR{kz.json,Switch-URL});
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if($du != $null) {
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if($(kzR{kz.json,Other-Leg-Call-ID}) == "") {
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## not bridged
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$var(rep) = $_s($var(replaced_call_id);a-leg=true);
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} else {
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## ensure early-only=true
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$var(rep) = $_s($var(replaced_call_id);early-only=true);
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}
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remove_hf_re("^Replaces");
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append_hf("Replaces: $var(rep)\r\n");
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xlog("L_INFO", "$ci|log|call-id $var(replaced_call_id) found, redirecting call ($(ru{uri.user})) to $du => $var(rep)\n");
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route(EXTERNAL_TO_INTERNAL_RELAY);
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exit();
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} else {
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xlog("L_WARN", "$ci|log|call-id $var(replaced_call_id) not found in cluster, proceeding with normal dispatch\n");
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}
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} else {
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xlog("L_WARN", "$ci|log|error querying cluster for call-id $var(replaced_call_id), proceeding with normal dispatch\n");
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}
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}
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}
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##### CALL-PARK ####
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if($sht(park=>$(ru{uri.user})@$(ru{uri.domain})) != $null) {
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$du = $sht(park=>$(ru{uri.user})@$(ruri{uri.domain}));
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xlog("L_INFO", "$ci|log|redirecting park request to $du\n");
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route(EXTERNAL_TO_INTERNAL_RELAY);
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exit();
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}
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}
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route[FAST_PICKUP_OPTION]
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{
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$var(Pickup) = "";
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switch($var(PickupOptions))
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{
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case 1:
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$var(Pickup) = ";a-leg=true";
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break;
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case 2:
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$var(Pickup) = ";early-only=true";
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break;
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default:
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break;
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}
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}
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route[FAST_PICKUP_INIT]
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{
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$var(AppName) = $(kzE{kz.json,App-Name});
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## park redirects without replaces header
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if($var(AppName) == "park") {
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if($(kzE{kz.json,State}) == "terminated") {
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$sht(park=>$(kzE{kz.json,Presence-ID})) = $null;
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} else {
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$sht(park=>$(kzE{kz.json,Presence-ID})) = $(kzE{kz.json,Switch-URI});
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}
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}
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## fast pickup with cookies
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if(@cfg_get.kazoo.fast_pickup_cookies == 1) {
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if($var(AppName) == "park") {
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$var(Pickup) = 1; #";a-leg=true";
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} else {
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$var(Pickup) = 2; #";early-only=true";
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}
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$var(Option) = $(var(Pickup){s.encode.hexa});
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$var(Cookie) = $(kzE{kz.json,Switch-URI}{s.md5});
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$var(call_id) = $(kzE{kz.json,Call-ID});
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$var(JObj) = $(kzE{re.subst,/"Call-ID"\s*\:\s*"([^"]*)"/"Call-ID" : "kfp+$var(Option)$var(Cookie)@\1"/});
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xlog("L_INFO", "$var(call_id)|fast|shortcut ($var(Pickup)) kfp+$var(Option)$var(Cookie)@$var(call_id)\n");
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}
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}
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# vim: tabstop=4 softtabstop=4 shiftwidth=4 expandtab
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