While declaring `emqx_conf` as an application dependency of
`emqx_resource` worked for releases, it messed up the startup
relationship during tests. Since only removing `emqx_conf` from the
`applications` key in `emqx_resource` breaks the list of apps that
need to be rebooted on config changes (since `emqx_conf` is not on any
apps dependencies list, it was not being added to the final
topologically sorted list), we now always add it as a vertex to ensure
its presence there. This (apparently) makes the rebar3 release, the
mix release and test runs behave normally.
By treating the apps in the umbrella as dependencies to be managed and
built by rebar3, we can simplify the maintenance of the release, at
the cost of increased build times: using Mix as before, it could track
changed files better than using rebar. But the complexity and
possibility of discrepancies make it using rebar much more compelling.
This commit enables a minimal working build of EMQX release using
Mix. However, to properly start the release, several configuration
steps are still missing. A `mix_release.sh` script does a few hacks
to get the release built with Mix to start properly, by first assuming
that `make emqx` has been run prior to the release, ran once to
generate the `app.*.config` files, and then it copies that and some
other files to the expected places.
Also, `emqx_telemetry` hangs the start procedure because it thinks
it's in an official release and tries to make a request. We disable
it temporarily via config just to get a working build for now.
* refator(config_handler): handle and validate the updates to raw_configs
* fix(hocon): update hocon to 0.8.0
* refactor(config_handler): check and apply envs only in top-level handler
* refactor(config_handler): update config from top level to bottom level
* refactor(emqx_data_bridge): move configs to emqx.conf
* fix(emqx_schema): remove the extra config path
* fix(config_handler): load the emqx.conf when starting emqx_config_handler
* fix(data_bridge): API not working
* feat(config_handler): save updated configs to emqx_override.conf
* fix(config_handler): cannot find the emqx.conf and emqx_override.conf
* fix(emqx_config): cannot find the correct path for etc dir
* fix(test): load load emqx_schema foreign refereced apps
* refactor(emqx_plugin): do not generate configs before load plugins
All configs (including the configs for plugins) now should go into
the `emqx.conf`.
* fix(tests): update the test cases for plugins
* fix(tests): don't include schema from apps when testing
* fix(tests): use emqx-ct-helper branch hocon
Zaiming (Stone) Shi