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emqx/lib-ee/emqx_ee_connector
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Thales Macedo Garitezi c0b208dd9e fix(influxdb): check if fields are empty before sending 
Related Issue: https://emqx.atlassian.net/browse/EMQX-8461

Currently, the InfluxDB client raises an error if an empty `fields`
map is passed to it for pushing data.

```
  14:03:35.563 [error] [InfluxDB] Encode [
    %{
      fields: %{},
      measurement: "t/topic",
      tags: %{},
      timestamp: 1670864615563
    }
  ] failed: :error :missing_field [
    {:influxdb_line, :encode_fields, 1,
     [
       file: '/home/thales/dev/emqx/emqx/deps/influxdb/src/influxdb_line.erl',
       line: 60
     ]},
    {:influxdb_line, :encode_, 1,
     [
       file: '/home/thales/dev/emqx/emqx/deps/influxdb/src/influxdb_line.erl',
       line: 44
     ]},
    {:influxdb_line, :"-encode_/1-fun-0-", 2,
     [
       file: '/home/thales/dev/emqx/emqx/deps/influxdb/src/influxdb_line.erl',
       line: 38
     ]},
    {:influxdb, :write, 2,
     [file: '/home/thales/dev/emqx/emqx/deps/influxdb/src/influxdb.erl', line: 79]},
    {:emqx_ee_connector_influxdb, :do_query, 3,
     [
       file: '/home/thales/dev/emqx/emqx/lib-ee/emqx_ee_connector/src/emqx_ee_connector_influxdb.erl',
       line: 322
     ]},
    {:emqx_resource_worker, :apply_query_fun, 6,
     [
       file: '/home/thales/dev/emqx/emqx/apps/emqx_resource/src/emqx_resource_worker.erl',
       line: 454
     ]},
    {:emqx_resource_worker, :query_or_acc, 3,
     [
       file: '/home/thales/dev/emqx/emqx/apps/emqx_resource/src/emqx_resource_worker.erl',
       line: 306
     ]},
    {:gen_statem, :loop_state_callback, 11, [file: 'gen_statem.erl', line: 1203]},
    {:proc_lib, :init_p_do_apply, 3, [file: 'proc_lib.erl', line: 226]}
  ]
  2022-12-12T14:03:35.563607-03:00 [error] [InfluxDB] Encode [#{fields => #{},measurement => <<"t/topic">>,tags => #{},timestamp => 1670864615563}] failed: error missing_field [{influxdb_line,encode_fields,1,[{file,"/home/thales/dev/emqx/emqx/deps/influxdb/src/influxdb_line.erl"},{line,60}]},{influxdb_line,encode_,1,[{file,"/home/thales/dev/emqx/emqx/deps/influxdb/src/influxdb_line.erl"},{line,44}]},{influxdb_line,'-encode_/1-fun-0-',2,[{file,"/home/thales/dev/emqx/emqx/deps/influxdb/src/influxdb_line.erl"},{line,38}]},{influxdb,write,2,[{file,"/home/thales/dev/emqx/emqx/deps/influxdb/src/influxdb.erl"},{line,79}]},{emqx_ee_connector_influxdb,do_query,3,[{file,"/home/thales/dev/emqx/emqx/lib-ee/emqx_ee_connector/src/emqx_ee_connector_influxdb.erl"},{line,322}]},{emqx_resource_worker,apply_query_fun,6,[{file,"/home/thales/dev/emqx/emqx/apps/emqx_resource/src/emqx_resource_worker.erl"},{line,454}]},{emqx_resource_worker,query_or_acc,3,[{file,"/home/thales/dev/emqx/emqx/apps/emqx_resource/src/emqx_resource_worker.erl"},{line,306}]},{gen_statem,loop_state_callback,11,[{file,"gen_statem.erl"},{line,1203}]},{proc_lib,init_p_do_apply,3,[{file,"proc_lib.erl"},{line,226}]}]

  14:03:35.565 [error] [connector: "bridge:influxdb_api_v2:aaa", msg: 'influxdb write point failed', reason: :missing_field]
  2022-12-12T14:03:35.565345-03:00 [error] connector: <<"bridge:influxdb_api_v2:aaa">>, line: 335, mfa: emqx_ee_connector_influxdb:do_query/3, msg: influxdb write point failed, reason: missing_field
  []

  14:03:35.565 [error] [id: "bridge:influxdb_api_v2:aaa", msg: :send_error, reason: :missing_field]
  iex(emqx@127.0.0.1)2> 2022-12-12T14:03:35.565913-03:00 [error] id: <<"bridge:influxdb_api_v2:aaa">>, line: 396, mfa: emqx_resource_worker:handle_query_result/4, msg: send_error, reason: missing_field
```

Instead of raising, we check if the interpolation resulted in an empty
map due to lack of context and just fail the push more gracefully.

Related to this, the original issue _appears_ to be related to a
frontend issue (to be confirmed and fixed separately), where the
it is not encoding the field types:
https://emqx.atlassian.net/browse/EMQX-8461?focusedCommentId=24805
 		2022-12-16 09:52:34 -03:00
..
i18n feat: influxdb bridge structure fits new style 2022-08-24 09:59:22 +08:00
include feat: influxdb bridge structure fits new style 2022-08-24 09:59:22 +08:00
src fix(influxdb): check if fields are empty before sending 2022-12-16 09:52:34 -03:00
test chore: use HStreamDB for module name 2022-08-07 19:37:44 +08:00
.gitignore feat: add emqx enterprise app connector & bridge 2022-07-25 09:36:45 +08:00
README.md feat: add emqx enterprise app connector & bridge 2022-07-25 09:36:45 +08:00
rebar.config feat: add mongodb bridge (e5.0) 2022-09-01 14:47:14 -03:00

README.md

emqx_ee_connector

An OTP application

Build

$ rebar3 compile