emqx/apps/emqx_connector
Kjell Winblad ca947e3e70 fix: lost messages when HTTP connection times out
When using async mode with the webhook bridge, queued messages that are
not fully processed when the connection times out could be lost. This
commit fixes this by letting the bridge return a recoverable_error when
this happen. The message send will then be retried in sync mode by the
emqx_resource_buffer_worker.

Fixes: https://emqx.atlassian.net/browse/EMQX-8974
2023-03-07 20:57:19 +01:00
..
etc feat: generate a minimized emqx.conf 2022-05-31 19:20:27 +08:00
i18n docs: improve bridge_mode description 2023-02-15 15:24:10 +01:00
include refactor: remove the auto_reconnect field 2023-01-11 21:47:06 +08:00
src fix: lost messages when HTTP connection times out 2023-03-07 20:57:19 +01:00
test Merge pull request #9842 from savonarola/fix-redis-cluster-recover 2023-02-01 10:38:52 +02:00
.gitignore Revert "chore: mv emqx_connector to emqx_data_bridge" 2021-06-17 19:11:10 +08:00
docker-ct fix(connector): fix redis cluster resource recovery 2023-01-31 16:55:05 +02:00
README.md refactor: remove the auto_reconnect field 2023-01-11 21:47:06 +08:00
rebar.config fix(connector): fix redis cluster resource recovery 2023-01-31 16:55:05 +02:00

emqx_connector

This application is a collection of connectors.

A connector is a callback module of emqx_resource that maintains the data related to external resources. Put all resource related callback modules in a single application is good as we can put some util functions/modules here for reusing purpose.

For example, a MySQL connector is an emqx resource that maintains all the MySQL connection related parameters (configs) and the TCP connections to the MySQL server.

An MySQL connector can be used as following:

(emqx@127.0.0.1)5> emqx_resource:list_instances_verbose().
[#{config =>
       #{cacertfile => [],certfile => [],
         database => "mqtt",keyfile => [],password => "public",
         pool_size => 1,
         server => {{127,0,0,1},3306},
         ssl => false,user => "root",verify => false},
   id => <<"mysql-abc">>,mod => emqx_connector_mysql,
   state => #{poolname => 'mysql-abc'},
   status => connected}]
(emqx@127.0.0.1)6> emqx_resource:query(<<"mysql-abc">>, {sql, <<"SELECT count(1)">>}).
{ok,[<<"count(1)">>],[[1]]}