Hello,

the issue is triggered by the fact that the JSON document has $xyz tokens (e.g., $oid), which match the kamailio variables format, and the jansson_get() tries to replace them, but no such variable is exported by kamailio, throwing an error.

Try to replace $ with $$ inside the $var(data), something like:

$var(m) = "$";

$var(r) = "$$";

$var(newdata) = $(var(data){s.replace,$var(m),$var(r)});

Let us know if works, if now, we have to look at the code of jansson module and see how it evaluates its parameters for functions.

Cheers, Daniel

On 08.01.18 08:33, Mojtaba wrote:

Hello, I used ndbmongo module in kamailio, I used mongodb_find command to get some data from mongo, like this:

if(mongodb_find("sermongo", "Asterisk", "user", "{ "number" : "$fU" }", "res")) { xlog("L_INFO", "Data from mongodb is " $mongodb(res=>value) " \n"); $var(data) = $mongodb(res=>value); } The result in syslog is like this: Jan 8 07:23:36 ubuntu14 /usr/local/sbin/kamailio[12127]: {1 2 INVITE MDRlMjRlNGVjZGY1Y2JkYjA5OGM2ZTg1ZTFjZTk0Nzg.} INFO: <script>: user Data from mongodb is " { "_id" : { "$oid" : "5916def36803fa48468b456b" }, "user_type" : "SIP", "context" : "main_routing", "deny" : "0.0.0.0/0.0.0.0", "call_record" : "no", "dtmfmode" : "rfc2833", "canreinvite" : "no", "directmedia" : "no", "host" : "dynamic", "type" : "friend", "nat" : "force_rport,comedia", "port" : "5060", "qualify" : "yes", "callgroup" : "1", "pickupgroup" : "1", "permit" : "0.0.0.0/0.0.0.0", "callcounter" : "yes", "faxdetect" : "no", "call_limit" : "", "name" : "1000", "number" : "1000", "cid_number" : "1000", "secret" : "123123", "date" : { "$date" : 1494671091612 }, "more_options" : "" } "

Now i need to get just some keys like "context" from json and save them in PV, i used jansson2.10 for doing this job, like this:

jansson_get("user.context", $var(jdata), "$var(context)"); but i have this error in syslog: Jan 8 07:23:36 ubuntu14 /usr/local/sbin/kamailio[12127]: {1 2 INVITE MDRlMjRlNGVjZGY1Y2JkYjA5OGM2ZTg1ZTFjZTk0Nzg.} ERROR: <core> [core/pvapi.c:903]: pv_parse_spec2(): error searching pvar "oid" Jan 8 07:23:36 ubuntu14 /usr/local/sbin/kamailio[12127]: {1 2 INVITE MDRlMjRlNGVjZGY1Y2JkYjA5OGM2ZTg1ZTFjZTk0Nzg.} ERROR: <core> [core/pvapi.c:1107]: pv_parse_spec2(): wrong char [d/100] in [$oid] at [3 (0)] Jan 8 07:23:36 ubuntu14 /usr/local/sbin/kamailio[12127]: {1 2 INVITE MDRlMjRlNGVjZGY1Y2JkYjA5OGM2ZTg1ZTFjZTk0Nzg.} ERROR: <core> [core/sr_module.c:1268]: fix_param(): bad PVE format: "{ "_id" : { "$oid" : "5916def36803fa48468b456b" }, "user_type" : "SIP", "context" : "main_routing", "deny" : "0.0.0.0/0.0.0.0", "call_record" : "no", "dtmfmode" : "rfc2833", "canreinvite" : "no", "directmedia" : "no", "host" : "dynamic", "type" : "friend", "nat" : "force_rport,comedia", "port" : "5060", "qualify" : "yes", "callgroup" : "1", "pickupgroup" : "1", "permit" : "0.0.0.0/0.0.0.0", "callcounter" : "yes", "faxdetect" : "no", "call_limit" : "", "name" : "1000", "number" : "1000", "cid_number" : "1000", "secret" : "123123", "date" : { "$date" : 1494671091612 }, "more_options" : "" }" Jan 8 07:23:36 ubuntu14 /usr/local/sbin/kamailio[12127]: {1 2 INVITE MDRlMjRlNGVjZGY1Y2JkYjA5OGM2ZTg1ZTFjZTk0Nzg.} ERROR: <core> [core/mod_fix.c:564]: fixup_spve_null(): Cannot convert function parameter 1 to spve Jan 8 07:23:36 ubuntu14 /usr/local/sbin/kamailio[12127]: {1 2 INVITE MDRlMjRlNGVjZGY1Y2JkYjA5OGM2ZTg1ZTFjZTk0Nzg.} ERROR: <core> [core/action.c:1139]: do_action(): runtime fixup failed for jansson_get param 2 Jan 8 07:23:36 ubuntu14 /usr/local/sbin/kamailio[12127]: {1 2 INVITE MDRlMjRlNGVjZGY1Y2JkYjA5OGM2ZTg1ZTFjZTk0Nzg.} ERROR: <core> [core/action.c:1518]: do_action(): run action error at: /usr/local/etc/kamailio/kamailio.cfg:990 Jan 8 07:23:36 ubuntu14 /usr/local/sbin/kamailio[12127]: {1 2 INVITE MDRlMjRlNGVjZGY1Y2JkYjA5OGM2ZTg1ZTFjZTk0Nzg.} ERROR: <script>: Send SIP message to Simotel <192.168.122.1:36854> Let me know how i could fixed this Error in regard of [$oid]? Thanks with regards.