0bd5bec982
This upgrades mongodb-erlang from v3.0.18 to v3.0.19. This fixes a bug that occurred when one issued a command specified as a map*. This fix should not affect present EMQX as this functionality is currently not used by EMQX. However, I think it is good to do the upgrade anyway in case we will use the fixed functionality in the future. There is no need to update the changelog. * https://github.com/emqx/mongodb-erlang/pull/36 |
||
|---|---|---|
| .. | ||
| etc | ||
| i18n | ||
| 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 =>
#{auto_reconnect => true,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]]}