Zabbix4.0 -> pythonScript send JSON => how to populate Zabbix Trapper Item

[monitor-it443]

Hi,

1.) I have a python script that successfully sends JSON Data to my Zabbix server:

cat /var/log/zabbix/zabbix_server.log

1388:20200511:165346.143 __zbx_zbx_setproctitle() title:'trapper #3 [processing data]'
1388:20200511:165346.144 trapper got
'{
"request":"sender data",
"data":[
{
"host":"jayraspi",
"key":"smoke_detector_kitchen_alarm",
"value":"1",
"clock":1589208826.1425662}]
}'
1388:20200511:165346.144 In recv_senderhistory()
1388:20200511:165346.144 In process_client_history_data()
1388:20200511:165346.144 In parse_history_data()
1388:20200511:165346.144 End of parse_history_data():SUCCEED processed:0/1
1388:20200511:165346.144 End of process_client_history_data():SUCCEED
1388:20200511:165346.144 In zbx_send_response_ext()
1388:20200511:165346.144 zbx_send_response_ext() '{"response":"success","info":"processed: 0; failed: 0; total: 0; seconds spent: 0.000333"}'
1388:20200511:165346.145 End of zbx_send_response_ext():SUCCEED
1388:20200511:165346.145 End of recv_senderhistory()
1388:20200511:165346.145 __zbx_zbx_setproctitle() title:'trapper #3 [processed data in 0.001515 sec, waiting for connection]'

2.) Now I want to read out the value from the key `smoke_detector_kitchen_alarm` as an Item.
I created the following item in my Zabbix Web Interface:




3.) When I restart the Zabbix server I see that the item seems to be successfully added:

cat /var/log/zabbix/zabbix_server.log
28564:20200517:112612.142 itemid:28760 hostid:10084 key:'smoke_detector_kitchen_alarm'
28564:20200517:112612.142 type:2 value_type:4
28564:20200517:112612.142 interfaceid:0 port:''
28564:20200517:112612.142 state:0 error:''
28564:20200517:112612.142 flags:0 status:0
28564:20200517:112612.142 valuemapid:0
28564:20200517:112612.142 lastlogsize:0 mtime:0
28564:20200517:112612.142 delay:'0' nextcheck:0 lastclock:0
28564:20200517:112612.142 data_expected_from:1589707572
28564:20200517:112612.142 history:1 history_sec:7776000
28564:20200517:112612.142 poller_type:255 location:0
28564:20200517:112612.142 inventory_link:0
28564:20200517:112612.143 priority:1 schedulable:1

4.) If I send the JSON Data, I can see that it was successfully received in the log file, but still processed: 0

cat /var/log/zabbix/zabbix_server.log
28586:20200517:113541.557 __zbx_zbx_setproctitle() title:'trapper #4 [processing data]'
28586:20200517:113541.557 trapper got '{
"request":"sender data",
"data":[
{
"host":"jayraspi",
"key":"smoke_detector_kitchen_alarm",
"value":"1",
"clock":1589708141.5558918}]
}'
28586:20200517:113541.557 In recv_senderhistory()
28586:20200517:113541.557 In process_client_history_data()
28586:20200517:113541.557 In parse_history_data()
28586:20200517:113541.557 End of parse_history_data():SUCCEED processed:0/1
28586:20200517:113541.557 End of process_client_history_data():SUCCEED
28586:20200517:113541.557 In zbx_send_response_ext()
28586:20200517:113541.557 zbx_send_response_ext() '{"response":"success","info":"processed: 0; failed: 0; total: 0; seconds spent: 0.000166"}'
28586:20200517:113541.557 End of zbx_send_response_ext():SUCCEED
28586:20200517:113541.557 End of recv_senderhistory()
28586:20200517:113541.557 __zbx_zbx_setproctitle() title:'trapper #4 [processed data in 0.000763 sec, waiting for connection]'

5.) Also in the Web GUI, I see that the item has not received any data


6.) My Question:
-How can I make the smoke_detector_kitchen_alarm Zabbix Trapper Item receive the value (in this case unsigned int "1") from the send JSON Data?
- What do I miss ?


7.) This is my Python sender script:

(Result is "True")

[tim.mooney]

Nice job providing a lot of useful information. So many questions on these forums don't...

Does it make a difference if you don't quote the '1' in the Metric object type, in the call to send_to_zabbix? I ask, because JSON does actually have data types, and a numeric type in JSON wouldn't be quoted (there are exceptions, but I suspect Zabbix is adhering closely to the rules).