260fae296b
Fixes https://emqx.atlassian.net/browse/EMQX-9603 Rather than relying on a JWT worker to produce and refresh tokens, we could just produce then on demand when pushing the messages to GCP PubSub. That can generate a bit of extra work (as multiple processes might realize it’s time to refresh the JWT and do so), but that shouldn’t be much. In return, we avoid any possibility of not having a fresh JWT when pushing messages. |
||
|---|---|---|
| .. | ||
| etc | ||
| include | ||
| src | ||
| test | ||
| .gitignore | ||
| docker-ct | ||
| README.md | ||
| rebar.config | ||
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]]}